Water & Wastewater Asia May/June 2022

Water & Wastewater Asia is an expert source of industry information, cementing its position as an indispensable tool for trade professionals in the water and wastewater industry. As the most reliable publication in the region, industry experts turn this premium journal for credible journalism and exclusive insight provided by fellow industry professionals. Water & Wastewater Asia incorporates the official newsletter of the Singapore Water Association (SWA).

Water & Wastewater Asia is an expert source of industry information, cementing its position as an indispensable tool for trade professionals in the water and wastewater industry. As the most reliable publication in the region, industry experts turn this premium journal for credible journalism and exclusive insight provided by fellow industry professionals. Water & Wastewater Asia incorporates the official newsletter of the Singapore Water Association (SWA).


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MAY / JUNE <strong>2022</strong><br />

www.waterwastewaterasia.com<br />

<strong>Wastewater</strong> treatment<br />

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CeraMac: A sustainable<br />

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Singapore International <strong>Water</strong><br />

Week <strong>2022</strong> successfully enabled<br />

partnership for climate action

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email: dws-enquiry.apac@dupont.com<br />

Copyright © 2021 DuPont. All rights reserved. The DuPont Oval Logo and DuPont are trade marks of E.I. du Pont de Nemours and Company or its affiliates.


05 20<br />

04 Editor’s Note<br />

52 SWA Newsletter<br />

63 What’s Next?<br />

64 Advertisers’ Index<br />


12 Breakthrough in reverse osmosis<br />

38 One step forward, two steps back<br />

41 Automatic scrapper strainers protect<br />

critical membrane systems<br />


44 <strong>Water</strong> sector must invest in our<br />

planet<br />

46 Tsurumi Avant MQ-Series internal<br />

closed-loop cooling system<br />



14 Digital transformation: Reimaging water<br />

processing<br />

16 Empowering the next steps into<br />

digitalising water<br />


20 Brunei makes its water management<br />

smart with LoRaWAN<br />

23 A new water pump station for Calgary<br />

26 <strong>Wastewater</strong> treatment solution for a<br />

critical airport application<br />

28 Qdos CWT pump addresses pipeline<br />

pressure challenge<br />

30 Researchers collect critical water quality<br />

data on Africa’s Okavango Delta<br />

FOCUS<br />

32 CeraMac: A sustainable ceramic<br />

microfiltration system for water<br />

treatment<br />

35 Addressing toxicity of wastewater<br />

influent with Hach EZ7900<br />

48 Preventing boiler corrosion during<br />

shutdown<br />

50 Engineering for turnkey wastewater<br />

treatment plants<br />


56 SurfCleaner launches wastewater<br />

“skimmer-separator” tackling<br />

floating sludge<br />

57 Bentley Systems adds LCA and<br />

carbon calculations to iTwin platform<br />

58 Pulsar Measurement releases new<br />

portable transit time flow meter<br />


59 Achieving energy efficiency in<br />

desalination, water and wastewater<br />

treatment plants<br />

60 Singaproe International <strong>Water</strong><br />

Week <strong>2022</strong> successfully enabled<br />

partnerships for climate action<br />

62 Japanese researcher clinches Lee<br />

Kuan Yew <strong>Water</strong> Prize 2020 for<br />

pioneering solutions in advanced<br />

used water treatment<br />

2 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

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The ongoing paradigm shift to Industry<br />

4.0 brings forth the critical need for<br />

water utilities and wastewater treatment<br />

plants to integrate digital solutions into<br />

their water network. And in the face<br />

of urbanisation and industrialisation,<br />

digitalising the water network through<br />

automation and data analysis can supply<br />

water service providers with better<br />

insights, thus transforming their plants to<br />

be more resilient and innovative.<br />

Digital transformation was one of the<br />

four megatrends Emerson identified that<br />

will have an impact on the water and<br />

wastewater industry. On page 16 of this<br />

issue, Jonas Berge, senior director at<br />

Emerson Automation Solutions, describes<br />

digital transformation as “new data-driven<br />

ways of working” where plant operators<br />

can have the information about the<br />

condition and performance of the plant<br />

down to individual pieces of equipment<br />

to avoid failure and reduce maintenance<br />

costs. The goal, according to Berge, is<br />

to see energy intensity and unaccounted<br />

losses of the plant down to individual unit<br />

processes so operators can stop leaks<br />

and reduce energy costs.<br />

This issue has also lined-up several case<br />

studies, including KSB’s installation of<br />

its Omega pumps in the City of Calgary<br />

and SEKO’s installation of its PolyCendos<br />

wastewater treatment solution for an<br />

airport in Europe. To find out more, flip to<br />

pages 23 and 26, respectively.<br />

In the area of sustainability, Sandra<br />

DiMatteo, industry marketing director<br />

of water infrastructure at Bentley<br />

Systems, urges more action to be taken<br />

to meet the sustainability goals set out<br />

by the United Nations, and highlights:<br />

“<strong>Water</strong> safety and sustainability are<br />

more fragile than we think…We are all<br />

part of the solution and technology will<br />

help us get there faster. Sustainability<br />

means rethinking how we do things and<br />

doing them smarter and with greater<br />

transparency”. Continue reading the<br />

article on page 38.<br />

Digitalisation and sustainability were<br />

also largely spoken about at last month’s<br />

Singapore International <strong>Water</strong> Week<br />

(SIWW) <strong>2022</strong>. The event, which brought<br />

together international and local players<br />

in the water sector, concluded on a<br />

high note with insights and technology<br />

innovations in mitigating climate change.<br />

Catch a glimpse of the event on page 60.<br />

Digital transformation can inevitably<br />

allow water distribution networks to<br />

deliver safer and cleaner drinking<br />

water and better manage wastewater,<br />

stormwater, and sewage infrastructure,<br />

and the time is now to explore their<br />

opportunities in this digital era.<br />


William Pang • Publisher<br />

williampang@pabloasia.com<br />

Josephine Tan • Senior Editor<br />

josephine@pabloasia.com<br />

Pang YanJun • Business Development Manager<br />

yanjun@pabloasia.com<br />

let's connect!<br />

Goh Meng Yong • Graphic Designer<br />

mengyong@pabloasia.com<br />

Shu Ai Ling • Circulation Manager<br />

circulation@pabloasia.com<br />


Ellen Gao • General Manager<br />

pablobeijing@163.com<br />


Daisy Wang • Editor<br />

pabloshanghai@163.net<br />

Published by<br />


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<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong><br />

incorporates the official newsletter<br />

of Singapore <strong>Water</strong> Association<br />

4 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

NEWS<br />





The consortium of Tuas Power and<br />

ST Engineering, along with PUB,<br />

Singapore’s national water agency,<br />

have officially opened Singapore’s fifth<br />

desalination plant located on Jurong<br />

Island. Jurong Island Desalination<br />

Plant (JIDP) has a daily capacity of up<br />

to 137,000m 3 .<br />

Constructed under the Design, Build,<br />

Own and Operate (DBOO) model, JIDP<br />

will be operated by TP-STM <strong>Water</strong><br />

Resources, the joint venture company<br />

formed by the Tuas Power-ST<br />

Engineering consortium, for 25 years.<br />

Spanning over 3.7 hectares, JIDP<br />

receives seawater from Tuas Power’s<br />

Tembusu Multi-Utilities Complex<br />

(TMUC) for processing potable water.<br />

JIDP’s co-location with TMUC allows<br />

it to derive synergies in resources<br />

such as sharing of seawater intake and<br />

outfall structures, as well as energy from<br />

in-plant generation facilities. Due to<br />

the co-location, the plant is said to be<br />

5% more energy efficient compared to<br />

conventional desalination plants.<br />

Building a full-fledge desalination plant<br />

on existing infrastructure called for<br />

innovative engineering solutions, from<br />

creating modular systems in different<br />

areas of the desalination process<br />

to the pre-fabrication of equipment<br />

such as the reverse osmosis units. As<br />

such, JIDP is highly automated and<br />

incorporates water treatment equipment<br />

and membrane technologies such as<br />

dissolved air flotation, ultrafiltration and<br />

reverse osmosis.<br />

Ng Joo Hee, chief executive of PUB,<br />

said: “Although seawater desalination is<br />

the most expensive way to produce<br />

water, due to the energy required, it<br />

is nevertheless an essential source<br />

of drinking water for Singapore.<br />

Desalination is immune to the<br />

vagaries of weather and always<br />

available, rain or not.<br />

“The efficiencies that come from<br />

constructing JIDP, our fifth and<br />

newest desalination plant, next to<br />

Tuas Power’s existing TMUC make<br />

the energy-take for desalination that<br />

much more palatable. JIDP further<br />

diversifies our water production<br />

portfolio and its coming into<br />

operation enhances Singapore’s<br />

water security.”<br />

JIDP is equipped<br />

to produce up to<br />

137,000m 3 of potable<br />

water, strengthening<br />

Singapore’s water<br />

security<br />

DUPONT’S FILMTEC BAGS <strong>2022</strong> EDISON AWARD<br />

Four of DuPont’s technologies have been<br />

recognised with the <strong>2022</strong> Edison Award.<br />

The company received three Gold awards,<br />

including one for the FilmTec dry seawater<br />

reverse osmosis (SWRO) membranes under<br />

the Eco-Innovation category.<br />

DuPont’s FilmTec is a dry-stable membrane<br />

technology with a lower environmental<br />

footprint from reduced water usage, shipping<br />

weight and chemical disposal. FilmTec delivers<br />

performance over the operating lifetime and<br />

provides high NaCl and boron rejection to help<br />

meet World Health Organization (WHO) and<br />

other drinking water standards.<br />

Two other DuPont technologies which<br />

bagged the Gold award are the BETATECH<br />

thermal interface materials (TIM) solution<br />

that helps control the heat in EV batteries<br />

and Delrin renewable attributed acetal<br />

homopolymer under the Thermodynamic<br />

and Polymer and Emulsion categories,<br />

respectively. The Forth-Pak spray foam<br />

also clinched a Silver award in the Building<br />

Materials category.<br />

Alex Dembek, chief technology and<br />

sustainability officer at DuPont,<br />

commented: “This acknowledgement,<br />

selected by peers in the business and<br />

science community, exemplifies the spirit<br />

of sustainable innovation at DuPont, and<br />

reminds us of the impact we can achieve<br />

through customer collaboration to bring<br />

cutting-edge technologies to the market.”<br />

DuPont clinched four Edison Awards, including three<br />

Gold and a Silver<br />

Named after Thomas Alva Edison, the Edison<br />

Awards have recognised and honoured some of<br />

the most innovative new products, services and<br />

business leaders in the world since 1987.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 5

NEWS<br />

agency engages and invests in energy-related<br />

businesses, not only in Thailand but also<br />

abroad.<br />

Hydropower is achieved by converting the gravitational potential or kinetic energy of<br />

a water source to produce power<br />




Andritz and the Electricity Generating<br />

Authority of Thailand (EGAT) have signed<br />

a memorandum of understanding (MoU)<br />

to jointly explore and expand business<br />

opportunities for hydropower projects in<br />

Thailand and surrounding countries.<br />

EGAT is a state-owned power utility under<br />

the Ministry of Energy and is dubbed the<br />

“largest” power producer and supplier in<br />

Thailand. Owning and operating about 50<br />

power plants across the country, with a total<br />

installed capacity of about 16,000MW, the<br />

Combining the technology experience of<br />

Andritz and the operational expertise of<br />

EGAT, the partnership comprises expanding<br />

the digitalisation of the latter’s hydropower<br />

facilities and developing rehabilitation and<br />

also automation projects in Thailand. In<br />

addition, the agreement focuses on exploring<br />

new, joint business opportunities, including<br />

operation and maintenance services in<br />

Thailand and the surrounding region.<br />

To cope with Thailand’s economic growth<br />

and the associated increase in energy<br />

consumption, the government’s power<br />

development plan aims to increase the<br />

country’s total installed energy capacity from<br />

today’s 55,731MW to about 77,210MW by<br />

2037. This goal is to be achieved primarily<br />

through the installation of renewable energy<br />

facilities, with hydropower playing a critical<br />

role not only in generating clean energy but<br />

also in providing grid stability services.<br />



Energy Recovery has received multiple contract<br />

awards in the Gulf region totalling over US$20<br />

million for its PX Pressure Exchanger energy<br />

recovery devices. The orders are expected<br />

to be fulfilled by Q4 2023 and altogether, the<br />

desalination plants will be able to provide over<br />

one million cubic metres of water each day in<br />

this water-scarce region of the world.<br />

When these projects are completed, they will<br />

produce enough drinking water to fill over 400<br />

Olympic swimming pools per day. Moreover,<br />

Energy Recovery estimated that the PXs<br />

supplied to these plants will prevent more<br />

than 424,000 metric tons of carbon dioxide<br />

emission per year.<br />

In just the past 20 years, the Gulf’s population<br />

has increased by 55%, placing strain on the<br />

region’s water supply. Countries in the<br />

Gulf region are ranked among the most<br />

water-stressed countries in the world.<br />

Rodney Clemente, senior vice-president<br />

of water at Energy Recovery, said: “Energy<br />

Recovery’s reputation for producing<br />

dependable products is one of the main<br />

reasons why customers trust our PX to<br />

perform even under harsh conditions, bringing<br />

down the costs and energy consumption of<br />

what was once an energy-intensive process.<br />

The performance of our technology remains<br />

reliable, repeatable and predictable, allowing<br />

us to contract approximately 12 million cubic<br />

metres of installed capacity across the region.”<br />

The company further pointed out its PX has<br />

the potential to reduce energy use in seawater<br />

Energy Recovery’s PX<br />

Pressure Exchanger provides<br />

energy recovery for SWRO<br />

desalination systems<br />

reverse osmosis (SWRO) facilities by up to<br />

60%. The PX provides low lifecycle costs<br />

and provides savings to plant operators by<br />

bringing down the cost of clean water.<br />

6 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

NEWS<br />


As the water sector, governments and<br />

wider society face unprecedented<br />

challenges, the need to embrace<br />

change, innovate and collaborate<br />

has never been more critical.<br />

The merger of two water sector<br />

organisations in the UK aims to l<br />

ead the way.<br />

In April <strong>2022</strong>, British <strong>Water</strong> (BW)<br />

and the <strong>Water</strong> Industry Forum (WIF)<br />

announced that the merger of the<br />

two organisations was completed.<br />

The merger will increase the range<br />

of services on offer, strengthen<br />

membership support and enhance<br />

the opportunity for challenge-led<br />

thought leadership, which will<br />

provide greater authority and a<br />

stronger voice both nationally and<br />

internationally—elements that are<br />

only growing more essential in the<br />

current economic climate.<br />

Chris Loughlin, chair of British <strong>Water</strong>,<br />

commented: “By joining forces, we’ve<br />

created an even stronger organisation<br />

that can deliver ever greater value for<br />

all our members, key stakeholders,<br />

partners and the sector as a whole.<br />

There is a tremendous synergy to be<br />

gained from bringing our respective<br />

strengths together.”<br />

The WIF will remain as a not-forprofit<br />

limited company, operating<br />

as a subsidiary of BW. A proposed<br />

operating model and governance<br />

framework have been deployed to<br />

support the activities and priorities<br />

of the merger organisation, and more<br />

importantly to preserve the WIF’s<br />

integrity and independence.<br />

“BW and WIF have histories of<br />

achievements, for and on behalf<br />

of their members and the sector,”<br />

he concluded. “We know that by<br />

combining our respective strengths<br />

we can create a new and even<br />

stronger organisation that will deliver<br />

added value for all our members, key<br />

stakeholders and partners, enabling<br />

us to respond most effectively and<br />

efficiently to the challenges and<br />

opportunities ahead of us.”<br />

The merger between<br />

WIF and BW aims<br />

to encourage more<br />

collaborations in the<br />

water section<br />



ions that are dissolved in water that contribute<br />

to salt pollution.”<br />

A study led by the US National Science<br />

Foundation (NSF) grantee researchers at<br />

the University of Maryland revealed how<br />

salinisation from road salt combined with<br />

other pollutants can impact the ecological<br />

balance of freshwater bodies, and can<br />

potentially create conditions that harm<br />

aquatic life and pollute drinking water.<br />

Sujay Kaushal, lead author of the<br />

study, explained: “This is a problem<br />

that’s caused by road salt, but also<br />

other sources of salt pollution in our<br />

environment—the fertilisers we put on<br />

crops, the sewerage we put out, the roads<br />

that break down. It’s not just sodium<br />

chloride that’s increasing, it’s all these salt<br />

In addition to coining the term “Freshwater<br />

Salinisation Syndrome”, the team created<br />

a five-stage scale to assess salt pollution<br />

damage and a salinisation scorecard to<br />

evaluate water quality and salinisation<br />

risk. The study, published in Limnology<br />

and Oceanography Letters, offers an<br />

understanding of the effect road salt has on<br />

waterway ecology and details risk factors to<br />

the environment and infrastructure.<br />

Road salt affects<br />

water quality and harms<br />

freshwater bodies (Photo<br />

credit: Katja Schulz)<br />

“We developed a five-stage system to identify<br />

and track the unhealthy progression of<br />

salinisation in our rivers in much the same<br />

way we would track an illness or disease like<br />

cancer,” Kaushal concluded. “We have to look<br />

at this unhealthy ‘Salinisation Syndrome’ from<br />

a systems-level perspective if we’re going to<br />

develop guidelines for diagnosing harmful<br />

levels and treat the problem.”<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 7

NEWS<br />



The Housing and Development Board<br />

(HDB), a statutory board under the Ministry<br />

of National Development responsible<br />

for Singapore’s public housing, will be<br />

extending the Urban<strong>Water</strong> Harvesting<br />

System (UWHS) to existing HDB estates for<br />

the first time through a pilot project.<br />

HDB called for a tender for the installation<br />

of UWHS to harvest rainwater for nonpotable<br />

uses. It is estimated that about 15<br />

UWHSs will be installed, potentially reaping<br />

water savings of about 17,500m 3 per year.<br />

The UWHS is designed to maximise the<br />

volume of rainwater collected by harvesting<br />

stormwater surface runoff from the ground<br />

area surrounding multiple residential<br />

blocks. The stormwater from surface<br />

runoff that is discharged into an estate’s<br />

surrounding drainage system will first be<br />

channelled into the UWHS’ harvesting and<br />

detention tank.<br />

The system’s rainwater harvesting capability<br />

and water detention capacity allow for a<br />

single UWHS to harvest from and dispense<br />

water to as many as 12 residential blocks,<br />

for non-potable uses. Some of these uses<br />

include the washing of common areas and<br />

watering plants in HDB estates, where the<br />

UWHS can save up to 50% of water usage for<br />

these purposes. In addition, the channelling<br />

of stormwater into the UWHS’ harvesting<br />

and detention tank can mitigate potential<br />

flood risks in an estate in the event of a<br />

heavy downpour by slowing down the rate<br />

of discharge of stormwater into the drainage<br />

system downstream.<br />

Tan Meng Dui, CEO of HDB, commented:<br />

“With the vast majority of our residents<br />

Schematic of how the UWHS works (Photo credit: HDB)<br />

staying in existing HDB estates, we have<br />

taken a further step to pilot the system in<br />

existing HDB estates. While such brownfield<br />

developments will be more challenging to<br />

implement, compared to building the system<br />

as part of a new HDB development, the<br />

extension of the UWHS to existing estates will<br />

help to level up the sustainability provisions of<br />

our existing estates, and bring the benefits of<br />

green and sustainable living to more residents<br />

and towns.”<br />



Xylem has marked five million Flygt<br />

pumps produced, continuing its efforts<br />

in breakthrough water technology<br />

innovations. The Flygt Concertor<br />

wastewater pumping system with<br />

integrated digital intelligence was<br />

the five millionth pump to roll off the<br />

production line and will serve the UKbased<br />

water utility, Scottish <strong>Water</strong>.<br />

The Concertor, which delivers energy<br />

savings of up to 70% compared to<br />

a conventional pumping system, is<br />

among the technologies that will<br />

support Scottish <strong>Water</strong>’s commitment<br />

to achieving net-zero emissions by<br />

2040.<br />

commented: “<strong>Water</strong> utilities are<br />

continuously working to raise the bar<br />

for their communities by increasing<br />

their infrastructure’s efficiency,<br />

sustainability and affordability.<br />

For more than a century, we’ve<br />

collaborated with customers<br />

around the world to advance Flygt<br />

technologies that help address their<br />

biggest water challenges.<br />

“Today’s innovations include applying<br />

data analytics and decision intelligence<br />

to optimise water networks. These<br />

high-efficiency technologies also help<br />

utilities dramatically reduce energyrelated<br />

greenhouse gas emissions.”<br />

operational and environmental<br />

gains for its customers and their<br />

communities, including Scottish<br />

<strong>Water</strong>, Heathrow Airport and a<br />

wastewater utility in Michigan.<br />

Xylem’s five millionth Flygt pump<br />

rolled off the production line at its<br />

Swedish manufacturing plant, which<br />

is on track to recycle process water<br />

by 2023.<br />

Intelligent pumping technologies<br />

enable water operators to increase<br />

network resilience and sustainability<br />

Hayati Yarkadas, president of<br />

water infrastructure for Xylem,<br />

Xylem’s Flygt solutions have been<br />

deployed worldwide, driving<br />

8 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

NEWS<br />



To further strengthen its position in the<br />

global water markets, NX Filtration has<br />

expanded its global sales team with<br />

country managers in the Americas and<br />

China.<br />

Hu Shoahua has been named NX<br />

Filtration’s country manager for China.<br />

He brings over 25 years of experience<br />

in membranes for water treatment in<br />

industrial and municipal markets and<br />

will be responsible for all commercial<br />

activities in China and leading the<br />

regional sales team.<br />

“<strong>Asia</strong>, and particularly China, is facing<br />

many water-related challenges around<br />

growing cities and increased industrial<br />

activity. In Northern China, water<br />

shortage, surface water pollution and<br />

hardness are major challenges. In<br />

Eastern and Southern China, industrial<br />

pollution and micropollutants pose<br />

huge challenges for the environment<br />

and drinking water quality,” he<br />

said. “NX Filtration’s hollow fibre<br />

nanofiltration membranes can address<br />

all such challenges based on its<br />

sustainable and efficient solution.”<br />

Also joining NX Filtration is Tony<br />

Fuhrman, who has been appointed<br />

as country manager for the Americas.<br />

Fuhrman has experience in water and<br />

wastewater treatment technology<br />

sectors through his previous roles<br />

as commercial director and area<br />

market director for LG <strong>Water</strong><br />

Solutions and various key positions<br />

at Hydranautics and SUEZ. He will<br />

support NX Filtration’s commercial<br />

roll-out strategy of its innovative<br />

and sustainable direct nanofiltration<br />

technology for municipal and<br />

industrial applications.<br />

Tony Fuhrman (left)<br />

and Hu Shoahua have<br />

joined NX Filtration as<br />

country manager for the<br />

Americas and China,<br />

respectively<br />


ZWEEC established a partnership with Yangtze<br />

River Authority to develop and market its ecological<br />

environmental monitoring platform in China<br />

ZWEEC Analytics has sealed a partnership<br />

with the Yangtze River Monitoring and<br />

Scientific Research Centre to jointly develop<br />

and market its water ecological environmental<br />

monitoring platform in China.<br />

and early intervention of water ecological<br />

environments.<br />

This move comes as ZWEEC is building<br />

the next evolution in water technology to<br />

enable the sustainable management of water<br />

resources management in the region.<br />

Qiu Guangsheng, director of the Yangtze River<br />

Authority, said: “We have worked with ZWEEC<br />

for many years and are happy to enter into<br />

a partnership with ZWEEC to advance the<br />

deployment of the ecological environment of<br />

the Yangtze River Basin, that will contribute<br />

towards bilateral trade and investment<br />

between Singapore and China.”<br />

for 45% of China’s GDP. It is also home to a<br />

third of China’s endangered species and 40%<br />

of its rare or endangered plants.<br />

Since the pilot project of ZWEEC’s first Fish<br />

Activity Monitoring System (FAMS) in China’s<br />

Yangtze Basin <strong>Water</strong> Environment Monitoring<br />

Centre began under the cooperation between<br />

PUB, Singapore’s national water agency<br />

and China’s Ministry of <strong>Water</strong> Resources in<br />

2013, ZWEEC has deployed, installed and<br />

commissioned its technologies—Aquapro and<br />

Algapro—for China’s south-to-north water<br />

diversion project in the Yangtze River Basin<br />

to safeguard the water quality and safety of<br />

China’s domestic drinking water sources.<br />

Tapping on ZWEEC’s advanced analytics,<br />

artificial intelligence (AI) and predictive<br />

modelling capabilities, the project would<br />

develop and deploy water technology<br />

solutions in China worth around some RMB70<br />

million (US$10.9 million) over the next three<br />

years to enable the automatic monitoring<br />

The Yangtze River is one of China’s most vital<br />

domestic waterways that accounts for around<br />

40% of the country’s freshwater resources.<br />

The Yangtze River basin covers 19 provinces<br />

in China’s eastern, western and central<br />

regions, providing a source of water for almost<br />

600 million people and as a region, accounting<br />

Liu Haobing, CEO of ZWEEC China, concluded:<br />

“We are delighted to bring our partnership<br />

with Yangtze River Authority to a new level,<br />

as we actively support China’s Belt and Road<br />

initiative and play an active role in China’s water<br />

environmental safety, ecological protection and<br />

sustainable urban water management.”<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 9

NEWS<br />



Ho Chi Minh City lost nearly 30%<br />

— more than 150 million cubic<br />

metres — of clean water in a recent<br />

year through leaking and damaged<br />

pipes, at a rate considerably higher<br />

than in many developed cities.<br />

Major sections of water distribution<br />

infrastructure in Ho Chi Minh City<br />

are aged, with some sections built<br />

more than 30 years ago, or even<br />

dating to the colonial era. The<br />

city continues to grow, increasing<br />

pressure on existing infrastructure.<br />

The city’s local water utility<br />

Saigon <strong>Water</strong> Supply Corporation<br />

(SAWACO) has undertaken a<br />

major renovation of the city’s<br />

water distribution network and has<br />

adopted ABB Ability Symphony<br />

Plus to support the goal of<br />

reducing water leakage from 30%<br />

to 10% by 2020.<br />

ABB Ability Symphony Plus is an<br />

automation system designed for<br />

the power and water industries.<br />

This control system, which is<br />

part of the ABB Ability portfolio<br />

of digital offerings, adds value by<br />

collecting, analysing and providing<br />

actionable insights on plant and<br />

engineering data in systems,<br />

ultimately lowering project risk,<br />

reducing cost and throughput<br />

times and improving asset<br />

performance and profitability.<br />

Tran Quang Minh, deputy general<br />

director of SAWACO, commented:<br />

“Ho Chi Minh City is making the<br />

transition to digital technology.<br />

A modern water management<br />

system is very important to<br />

customers and businesses to meet<br />

rising demand. ABB Ability is one<br />

of the solutions SAWACO has been<br />

using to help us detect leaks and<br />

monitor and control the network in<br />

real-time.”<br />

The renovation includes expansion<br />

of the current network capacity,<br />

integration of more isolated<br />

sections, reduction of water<br />

leakage and real-time control and<br />

monitoring disruptions as part of<br />

the project scope.<br />

ABB Ability Symphony Plus<br />

integrates TaKaDu’s network<br />

management solution, supporting<br />

SAWACO monitoring the network<br />

conditions digitally through multiple<br />

data collection points, such as<br />

sensors and meters, and offering<br />

insights to reduce non-revenue<br />

water. SAWACO will then be able<br />

to increase the amount of water<br />

delivered to the city’s industries<br />

and eight million residents.<br />

At a first estimate, SAWACO will hit<br />

50 million cubic metres per year of<br />

water savings, equivalent to 20,000<br />

Olympic-sized swimming pools,<br />

while production cost savings<br />

could be higher than US$10 million<br />

a year.<br />

Danilo Moresco, global product<br />

manager, power and water, ABB,<br />

concluded: “This project in Ho Chi<br />

Minh City shows how advanced<br />

automation impacts our daily life.<br />

The smart collection of digital<br />

data from the field offers real-time<br />

insights on the network status,<br />

allowing SAWACO to increase the<br />

quality of its drinking water and<br />

improve living conditions for millions<br />

of people.”<br />

ABB Ability<br />

Symphony Plus<br />

SCADA for water<br />

industries is adopted<br />

by SAWACO to<br />

address water<br />

leakage challenges<br />

and support longterm<br />

growth<br />

10 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

NEWS<br />


Bio-UV Group has installed advanced<br />

water treatment systems at Doha’s<br />

Al-Bayt Stadium in the city of Al Khor,<br />

Qatar. The 63,000-capacity arena,<br />

which is set to be one of the stadiums<br />

that will be hosting the FIFA World<br />

Cup Qatar <strong>2022</strong>, was installed with a<br />

range of advanced UV- and ozonebased<br />

systems to treat the stadium’s<br />

changing room pools, ornate water<br />

features and extensive lakes.<br />

Anne Julia, export director for<br />

Bio-UV Group, explained: “<strong>Water</strong><br />

treatment and water quality are always<br />

important. But in warmer climates,<br />

particular attention needs to be paid<br />

to disinfection as the multiplication<br />

rate of bacteria, viruses and algae can<br />

be exponentially faster. There is also<br />

a greater potential for exotic diseases<br />

and parasites.”<br />

Installed by systems integrator<br />

<strong>Water</strong>master Qatar and commissioned<br />

prior to the FIFA Arab Cup last<br />

December, Bio-UV Group’s scope<br />

of supply included triogen<br />

O3 M7-520A and O3 M6-WC50S<br />

ozone generators, along with triogen<br />

CF1000 and CF220 full flow UV water<br />

treatment systems.<br />

Souheil Nasrallah, general manager<br />

of <strong>Water</strong>master Qatar, continued:<br />

“The lakes and rivers in the grounds<br />

of the stadium provide a beautiful,<br />

natural habitat of thousands of<br />

fish, so chemical-free disinfection<br />

and systems allowing the reuse<br />

of treated sewage effluent were<br />

environmentally very important.”<br />

While a minimum amount of chlorine<br />

must be added to public pools by<br />

law, the use of UV and ozone as a<br />

secondary source of disinfection<br />

reduces the chlorine demand, thus<br />

saving costs and improving water<br />

quality.<br />

“Oxidation and UV technologies<br />

destroy many contaminants from<br />

the water, attacking the vital DNA<br />

of the bacteria and microorganisms<br />

directly. It is also effective in<br />

dealing with chlorine-resistant<br />

pathogens such as Cryptosporidium<br />

and Giardia,” Khalifudeen Shafi,<br />

regional manager of Bio-UV Group<br />

concluded.<br />

Bio-UV Group has<br />

supplied advanced<br />

water treatment<br />

systems to Doha’s<br />

Al-Bayt Stadium<br />



Evoqua <strong>Water</strong> Technologies has<br />

purchased the remaining equity of<br />

San Diego-based Frontier <strong>Water</strong><br />

Systems. The former initially<br />

announced its investment position in<br />

the latter in October 2019.<br />

The business adds to Evoqua’s<br />

portfolio of advanced wastewater<br />

treatment technologies, as<br />

Ron Keating, CEO of Evoqua,<br />

commented: “Evoqua and Frontier<br />

have successfully partnered<br />

on numerous projects to help<br />

solve water treatment needs of<br />

our customers. We are pleased<br />

to officially welcome Frontier to<br />

the Evoqua family and we look<br />

forward to continuing to deliver<br />

on our commitment to provide our<br />

customers with advanced water<br />

treatment solutions.”<br />

Frontier <strong>Water</strong> Systems is a supplier<br />

of engineered equipment packages<br />

for high-rate treatment of selenium,<br />

nitrate and metals in water and<br />

wastewater. Waste streams from<br />

processing containing metals and<br />

minerals must be treated to remove<br />

these contaminants prior to discharge.<br />

The company delivers a biological<br />

process that removes these metals in a<br />

modular bioreactor.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 11



in reverse osmosis<br />

the National Research Foundation (NRF)<br />

of Singapore and PUB was to develop a<br />

bio-mimetic ultra-permeable membrane<br />

with enhanced performance compared<br />

to existing membranes. Our team took<br />

inspiration from the biomolecules of<br />

cell membranes and succeeded in<br />

developing our hollow-fibre (HF) biomimetic<br />

membrane in 2018.<br />

H2MO’s HF bio-mimetic membrane<br />

was made with the use of cellular<br />

biomolecules, without the need for<br />

Aquaporin, and we can alter the<br />

characteristics of the membrane<br />

through modifications of our synthetic<br />

biomolecules. This is what we call BPM<br />

and this platform technology enables us<br />

to make a host of membranes from RO<br />

to nanofiltration and forward osmosis<br />

membranes.<br />

As a specialist in membrane material<br />

sciences, H2MO has developed and<br />

utilised Bio-Programmable Membrane<br />

(BPM) technology to manufacture<br />

reverse osmosis (RO) membranes in<br />

hollow fibre configuration. These BPM-<br />

RO membranes are made by forming<br />

a thin selective layer on a hollow fibre<br />

substrate with a formulation of biomaterials,<br />

giving the BPM membranes<br />

highly selective characteristics and<br />

enhanced water permeability.<br />

The applications BPM-RO membrane<br />

supports include potable water,<br />

ultrapure water, wastewater treatment<br />

and recycling, zero-discharge and<br />

desalination.<br />

H2MO is commercialising the BPM<br />

technology developed by a team<br />

led by Prof Wang Rong at Nanyang<br />

Technological University (NTU) in<br />

conjunction with PUB, Singapore’s<br />

national water agency. The company<br />

further worked with the team for<br />

technology scale-up to enable a<br />

new generation of membranes that<br />

can be used to play a key role in the<br />

management of Singapore’s critical<br />

water resources. In an interview with<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong>, Ong Tze<br />

Guan, founder and CEO at H2MO,<br />

discussed more on this project with<br />

PUB and the transformative role BPM<br />

can bring forth to the wider RO market.<br />

Can you elaborate on the project<br />

with PUB—what are the main<br />

objectives and how will the<br />

installation of BPM-RO support<br />

Singapore’s quest for water<br />

security?<br />

Ong Tze Guan: The project funded by<br />

We currently have two pilot systems<br />

operating at PUB’s Ulu Pandan<br />

<strong>Water</strong> Reclamation Plant to verify<br />

its performance under real-time<br />

operations; we have a 14 m 3 /day<br />

system using 4-inch modules and<br />

a 100 m 3 /day system using 8-inch<br />

modules; the 14 m 3 /day pilot has been<br />

in operation for about a year and the<br />

larger 100 m 3 /day system was recently<br />

installed.<br />

The results from the pilot system<br />

revealed a 70-110% higher flux<br />

compared to conventional membranes,<br />

consumes about 40% less energy under<br />

similar operation and showed superior<br />

fouling resistance. Furthermore, there<br />

is a potential to achieve higher water<br />

recovery.<br />

Singapore’s water security issues stem<br />

from its limited freshwater resources<br />

and this limitation has driven Singapore<br />

towards water sustainability through<br />

the four National Taps and developing<br />

a circular strategy to make every drop<br />

count.<br />

12 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


The pilots showed that the BPM-<br />

RO can play an important part in<br />

Singapore’s circular water economy<br />

by keeping water in use for as long<br />

as possible, achieving better water<br />

sustainability, through more efficient<br />

water recovery technology. The BPM-<br />

RO also contributes to enhancing<br />

resilience to climate change through<br />

drastically lower energy consumption<br />

and plays a part in helping Singapore<br />

address increasing water demand,<br />

which is expected to nearly double by<br />

2060.<br />

With BPM-RO production commencing<br />

at the end of <strong>2022</strong>, we look forward<br />

to contributing to Singapore’s<br />

desalination and wastewater recovery<br />

efforts in the coming years.<br />

Why is the HF configuration<br />

chosen over the spiral-wound (SW)<br />

configuration? Even so, what are<br />

some of the applications driving<br />

the HF membrane market?<br />

Ong: Different membrane<br />

configurations display different<br />

characteristics during use. We chose<br />

the HF membrane configuration over<br />

the SW membrane configuration<br />

because of several advantages.<br />

Firstly, HF configuration can have a<br />

large surface area to volume ratio,<br />

albeit this is dependent on the fibre<br />

diameter. Secondly, HF membranes<br />

can handle feed streams with<br />

higher levels of suspended solids.<br />

Thirdly, the ability to hydraulically<br />

clean the membranes, such as<br />

via air sparging, further enables<br />

the filtration of fouling prone feed<br />

waters. The latter two advantages<br />

also allow the possibility of reducing<br />

the necessity of pre-treatment of<br />

the feed stream and reducing the<br />

frequency of membrane chemical<br />

cleaning.<br />

Given that BPM-RO membrane<br />

systems function at lower pressures<br />

in the treatment of membrane<br />

bioreactor (MBR) effluent at the PUB<br />

pilot, it also contributes to lower<br />

fouling of the membranes. Hence,<br />

the above factors allow our HF<br />

configuration to operate with greater<br />

advantages and lower maintenance<br />

and operating costs.<br />

With membrane fouling and scaling a<br />

common issue with RO systems, how<br />

is H2MO addressing these issues<br />

while also extending the lifecycle of<br />

the membrane?<br />

Ong: The lifecycle of the membrane<br />

is primarily dictated by membrane<br />

fouling and scaling issues and through<br />

the careful selection of a more<br />

advantageous membrane configuration<br />

and an advantageous membrane<br />

surface chemistry.<br />

At our BPM-RO pilot system with<br />

a feed stream from a MBR effluent<br />

from the PUB pilot, we did a test of<br />

halting all chemical cleaning during the<br />

operation of the systems and we found<br />

that there was little trans-membrane<br />

pressure (TMP) change over a period<br />

of six months.<br />

Adding to the fact that BPM-RO<br />

operates at lower pressures, the<br />

combination of factors above<br />

contributes to the potential of a<br />

far longer lifecycle of the BPM-RO<br />

membranes which lowers the frequency<br />

of membrane replacement and further<br />

lowering operating cost.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 13



Reimaging water processing<br />

Brings forth innovations while enhancing existing systems.<br />

“Lacroix already provides a water loss<br />

solution; the challenge is accurately finding<br />

the location of the leak to fix it quickly and<br />

efficiently. In the future, the challenge will be<br />

to use artificial intelligence (AI) to anticipate<br />

leaks and perform preventative maintenance<br />

to ensure that leaks do not occur in the first<br />

place.”<br />

Sofrel Neo installed in an underground water manhole<br />

Embracing the smart water concept involves<br />

the monitoring, control and command of<br />

water networks. Digitalisation is another key<br />

factor which might bring added value across<br />

this whole process, from the water sensors<br />

to virtualisation solutions such as analytics<br />

and SCADA, Eric Woo, business development<br />

manager, <strong>Asia</strong>, Lacroix, suggested.<br />

Take SCADA for instance, it has the capability<br />

to remotely control and manage water<br />

networks, thus enabling plant operators to<br />

manage their networks better and optimise<br />

the operation of the devices they deploy.<br />

The SCADA central station thus serves as a<br />

gateway between the devices spread across<br />

the terrain and the operator responsible<br />

for analysing the network. Besides, the<br />

software also collects critical data such as<br />

the service life of technical parts and network<br />

outputs, allowing operators to better plan for<br />

supplementary installations for their network.<br />

Under Lacrox’s SCADA offerings include<br />

the Sofrel PCWin2 SCADA Central Station<br />

designed for operating Sofrel networks.<br />

It features the Interface Homme Machine<br />

(IHM) in HTML5, which enables operators to<br />

remain in contact with their installations and<br />

monitor their network via mobile devices or<br />

PCs.<br />

Other PCWin2 functions include a<br />

centralised alarm reporting via SMS and<br />

e-mail; automatic calculations of average<br />

flows, balances, formulas and more;<br />

curve plotting, graphic mimic diagrams;<br />

operating reports in Excel format; and selfconfiguration<br />

based on the parameters of<br />

the devices.<br />

That said, a digitised water network has<br />

its set of vulnerabilities, as Woo told<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong>: “<strong>Water</strong> network<br />

vulnerabilities are plentiful. The main issues<br />

lie in the ageing water infrastructure, which<br />

can lead to a high risk of leaks and nonrevenue<br />

water, and the impact of climate<br />

change, particularly on combined sewer<br />

overflows (CSO) and water pollution.<br />

The solution, he suggested, could include<br />

monitoring the age of infrastructure, analysing<br />

the number of leaks and their locations<br />

and also increasing the density of the leak<br />

detection devices to improve the visibility of<br />

the whole water network.<br />

To support leakage detection and CSO<br />

monitoring, Lacroix developed the Sofrel<br />

DL4W range which consists of LS/LT,<br />

OpenSensor and Neo data loggers specifically<br />

designed for drinking water and wastewater<br />

networks. <strong>Water</strong>tight, operational for up to 10<br />

years with their high-capacity lithium battery<br />

and fitted with a 2G/4G antenna, the LX data<br />

loggers are compatible with all instruments<br />

used in water networks.<br />

Since its launch, specific features and uses<br />

connected to water management have been<br />

introduced to enhance the Sofrel data logger<br />

offer. They are currently deployed across<br />

isolated sites and, subject to severe conditions<br />

in the field, supply daily data used to monitor<br />

and react to water network performance<br />

levels.<br />

Most often placed in manholes, the Sofrel data<br />

logger is frequently subjected to submersion<br />

phenomena. Equipped with a closure system<br />

and military-style connector, the IoT LX enjoys<br />

reinforced IP68 classification, enabling it to<br />

function even when the manhole is flooded.<br />

14 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


Sofrel YDRIX RTU<br />


In the face of increasing cyberattacks on<br />

water utilities and water treatment plants<br />

in recent years, the American <strong>Water</strong> Works<br />

Association has identified cybersecurity<br />

as a “mission-critical function” for water<br />

utilities. Lacroix similarly acknowledges<br />

the importance of cybersecurity, as Woo<br />

elaborated: “Smart water solutions can also<br />

combat technological vulnerabilities, such<br />

as remote device management for hardware<br />

updates or cybersecurity.<br />

“Digitalisation offers some protection<br />

but, at the same time, more digitalisation<br />

potentially means more risks. Hence,<br />

cybersecurity is of crucial importance<br />

in our products and we perform regular<br />

independent audits to ensure the security<br />

of all critical data.”<br />

Sofrel S4W can be installed in pumping<br />

stations and reservoirs as an inter-site<br />

communication tool between stations<br />

and water tanks as well as between water<br />

tanks and pumping stations. It can also be<br />

deployed in drinking water treatment plants<br />

and wastewater treatment plants for the<br />

management and monitoring of the water<br />

treatment and purification processes.<br />

To facilitate the exploitation of the data<br />

managed by the S4W locally or remotely,<br />

operators may choose between two graphical<br />

consultation interfaces—S4-Display and S4-<br />

View. The former is a colour touch-sensitive<br />

display that can be integrated into the front<br />

panel of the control cabinet. It allows the<br />

visualisation of mimic diagrams, data and<br />

curves on-site. The latter is a Windows-based<br />

software for viewing the data managed by<br />

S4W and allows remote diagnosis of its<br />

equipment.<br />


Smart environment has become a critical<br />

theme in <strong>Asia</strong>. Having invested for several<br />

years in <strong>Asia</strong> and established partnerships in<br />

various countries – from Thailand, Vietnam,<br />

Indonesia, Malaysia, the Philippines,<br />

Cambodia and China – Lacroix opened an<br />

office in Singapore in 2019 and has since<br />

worked on improving and developing its<br />

The Sofrel DL4W family of 4G M2M data loggers<br />

for monitoring and controlling the performance<br />

of water networks<br />

existing partner network while adding new<br />

partners across ASEAN and China.<br />

“By reorganising our partnerships, we can<br />

focus more on the quality and efficiency of<br />

our customer support,” he said. “This partner<br />

network means that we are much closer to<br />

our customers and can react much more<br />

quickly, with the help of our strong pre- and<br />

after-sales support teams at the Lacroix<br />

headquarters.”<br />

Several new products were released in the<br />

last 12 months, such as the Sofrel Neo, an<br />

NB-IoT/LTE-M data logger, and the Sofrel<br />

YDRIX 2G/3G/4G smart water remote<br />

telemetry unit (RTU). These products, Woo<br />

noted, have been developed with ASEAN<br />

countries in mind and provide efficient and<br />

easy-to-use solutions for water networks.<br />

Designed to meet the needs of water network<br />

operators and localities, Sofrel YDRIX RTU<br />

combines integrated 4G communication,<br />

cybersecurity and process control in a single<br />

product. It can be interfaced with pumps,<br />

valves, sensors and Modbus equipment<br />

present at the hydraulic facilities. As for Sofrel<br />

Neo, it monitors water metering and flows,<br />

registers data, calculates flow rates and<br />

transmits all the data periodically or on event<br />

detection.<br />

Sofrel Neo data logger<br />

With cybersecurity becoming a fundamental<br />

issue, Lacroix offers the Sofrel S4W<br />

telemetry solution that provides a high level<br />

of protection and security for connected<br />

water networks. Based on IP technologies,<br />

S4W integrates communication modems and<br />

relies on specific ready-to-use water features<br />

to monitor the sites, alert operators in case<br />

of anomaly, and manage and automate<br />

technical failures.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 15




into digitalising water<br />

Infrastructure modernisation, sustainability and<br />

decarbonisation, digital transformation, and autonomous<br />

operations—these are the four megatrends Emerson<br />

identified at the Emerson Exchange <strong>Asia</strong>-Pacific Virtual<br />

Edition 2021 last December. Jonas Berge, senior director at<br />

Emerson Automation Solutions, shares more with <strong>Water</strong> &<br />

<strong>Wastewater</strong> <strong>Asia</strong> on how the company is empowering the<br />

water industry into the next Industry 4.0 era.<br />

Emerson DeltaV mobile application<br />

How is Emerson supporting<br />

businesses’ digital transformation<br />

into the Industry 4.0 era?<br />

Jonas Berge: Digital transformation is<br />

primarily about new data-driven ways<br />

of working; having the information<br />

about the condition and performance<br />

of the plant down to individual pieces<br />

of equipment of all types, to avoid<br />

failure and optimise cleaning to reduce<br />

maintenance and energy costs while<br />

increasing production output.<br />

The goal is to see energy intensity and<br />

unaccounted losses of the plant down<br />

to individual unit processes so plant<br />

operators can stop leaks and reduce<br />

energy costs. For instance, they can<br />

view the process variability of the<br />

plant down to individual loops to tune<br />

to ensure quality and operate closer<br />

to optimal to increase throughput and<br />

reduce operational cost. They can<br />

also see corrosion and erosion in the<br />

plant down to individual pipe sections<br />

so they can avoid loss of containment<br />

to reduce clean-up costs and fines,<br />

and get a picture of the risk profile of<br />

the plant down to individual safety<br />

functions to avoid escalation in<br />

case of an event, thus making the<br />

plant a safer place to work.<br />

Emerson supports digital<br />

transformation by providing the<br />

software and sensors to enable<br />

these new data-driven ways of<br />

working.<br />

In your opinion, how will each<br />

of the four megatrends which<br />

Emerson identified have a<br />

sustained impact in <strong>Asia</strong>-Pacific,<br />

particularly in the water and<br />

wastewater industry?<br />

Berge: <strong>Asia</strong>-Pacific will have its<br />

fair share of ageing automation<br />

systems. These systems were<br />

the best of their kind when they<br />

were deployed but now lag behind<br />

modern systems so quality issues<br />

still happen, and incidents occur.<br />

And there are other challenges.<br />

Old automation components are<br />

becoming obsolete, cyberattack<br />

threats are emerging, and<br />

system maintenance costs are<br />

increasing. Plants also struggle<br />

with knowledge retention as<br />

experienced operators retire.<br />

Workers now want to be able<br />

to check the process from<br />

their mobile devices. As part of<br />

infrastructure modernisation,<br />

plants in <strong>Asia</strong>-Pacific are now<br />

modernising their automation<br />

systems to get support for<br />

integration using the OPC-UA<br />

standard to get data out to other<br />

systems that need it. That is, OPC-<br />

UA enables data integration while<br />

preserving the robustness of the<br />

control system at upgrades.<br />

Other important characteristics<br />

of a modern control system<br />

include more accurate flowmeters<br />

16 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


Autonomous operation means “no<br />

routine visits”, and this requires not<br />

only automatic process control but<br />

also automatic equipment monitoring<br />

and prediction. Therefore, plants<br />

deploy predictive analytics and add<br />

sensors on equipment on-site for<br />

data collection.<br />

Having participated in last<br />

year’s Sustainable Innovation<br />

Forum, what are some of the<br />

key takeaways you have picked<br />

up? More crucially, how will you<br />

describe the role sustainability<br />

plays in today’s water sector,<br />

and how can water management<br />

be sustainable for cities and<br />

Emerson offers<br />

a range of water<br />

treatment solutions<br />

such as process<br />

valves, control<br />

transfer pumps<br />

and transmitters<br />

for potable water<br />

applications<br />

and higher performance valves<br />

for tighter control, better alarm<br />

management for improved visibility<br />

and reduced risk, Ethernet interfaces<br />

instead of RS485 to be compatible<br />

with new automation, certified<br />

for cybersecurity, digital twin for<br />

simulation for testing and operator<br />

training, mobile on-the-go access<br />

anywhere, and virtualisation of<br />

servers. And these are just a few of<br />

the changes being made which are<br />

relevant to the water and wastewater<br />

industry.<br />

<strong>Water</strong> and wastewater plants do<br />

not use hydrocarbons; hence,<br />

sustainability is mostly about<br />

reducing electricity consumption.<br />

For instance, pumps are large<br />

consumers of electricity. As such,<br />

some measures to be taken include<br />

automation to ensure pumps are<br />

not running against closed valves<br />

and those that are not needed at the<br />

moment are not inadvertently left<br />

running. It is also important to monitor<br />

the pumps for deteriorating efficiency<br />

as well as strainers and filters for<br />

plugging. Lastly, monitoring for leaks<br />

is a critical part of water conservation.<br />

Although the water and wastewater<br />

treatment process in most plants<br />

is fully controlled by automation,<br />

there are still lots of manual tasks<br />

such as maintenance and reliability<br />

inspection, loss control, safety<br />

checks and operator rounds to<br />

name a few. Digital transformation<br />

is about automating these tasks.<br />

Plants can deploy a second layer of<br />

automation based on the NAMUR<br />

Open Architecture (NOA). This<br />

starts by sensing every part of the<br />

plant to obtain real-time equipment<br />

data through permanent sensing<br />

with advanced sensors which are<br />

wireless and non-intrusive. This is<br />

the first step in automating manual<br />

tasks. Next, plants deploy analytics<br />

software to predict failure and detect<br />

inefficiency and losses based on the<br />

data from the new sensors.<br />

Rural water and wastewater<br />

plants are located remotely, often<br />

unmanned, increasingly operated<br />

and managed from an integrated<br />

operations (iOps) centre. Since no<br />

one is on-site, reliably predicting<br />

problems in equipment like pumps<br />

in advance is very important.<br />

utilities?<br />

Berge: A vast number of new plants<br />

need to be built for decarbonisation<br />

and the hydrogen economy. And<br />

existing plants must be modified.<br />

Process units like electrolysers,<br />

steam methane reformers (SMR),<br />

carbon capture units, pipeline<br />

injection skid, refuelling stations<br />

and fuel cells all need a lot of<br />

automation. And a lot of this<br />

automation is specialised for<br />

hydrogen because hydrogen has<br />

some specific challenges such as<br />

permeability, embrittlement, ultralow<br />

temperature, ultra-high pressure,<br />

high flammability, invisible flame and<br />

more.<br />

Emerson is well positioned to<br />

help our customers because our<br />

products and solutions address<br />

these challenges. With the right<br />

automation components, operators<br />

may enjoy uninterrupted operation,<br />

low maintenance cost, safety, high<br />

throughput, high purity hydrogen,<br />

hydrogen and natural gas blend<br />

within specification and accurate<br />

billing. We are already helping our<br />

customers around the world with<br />

digital transformation.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 17


Emerson opened its South<br />

East <strong>Asia</strong> Service Centre last<br />

November. Can you share with<br />

us the reasons behind the<br />

decision of opening this new<br />

service centre, and the growth<br />

opportunities you see in the wider<br />

<strong>Asia</strong>-Pacific region?<br />

Berge: The original South East <strong>Asia</strong><br />

Service Centre and flow calibration<br />

facility has been operating for<br />

several years. The reason for our<br />

expansion is to serve our customers<br />

even better by now supporting even<br />

larger flow meters up to 12 inches.<br />

This means flow meter calibration<br />

with much faster and lower total<br />

cost as flow meters need not be<br />

sent overseas.<br />

This is an ISO 17025-accredited<br />

calibration facility, a standard<br />

accepted in many countries.<br />

What other trends do you see<br />

taking place in the water and<br />

wastewater industry, and how will<br />

you envision the next milestone<br />

in harnessing a more sustainable<br />

planet through advocacy for<br />

water?<br />

Berge: <strong>Water</strong> conservation is<br />

a huge piece of sustainability.<br />

Decarbonisation is great but we<br />

must not forget water.<br />

1<br />

1 Sedimentation<br />

tank in a<br />

wastewater<br />

treatment plant<br />

2 <strong>Water</strong> pump<br />

station in a<br />

power plant<br />

Just about all industries use<br />

enormous amounts of water.<br />

Evaporation cooling towers and<br />

the process itself are just two<br />

examples. We need to manage<br />

industrial water responsibly; plants<br />

must prevent overconsumption and<br />

losses. For example, plants run the<br />

water for more cycles in cooling<br />

towers to reduce blowdown and<br />

makeup. This, in turn, means plants<br />

must closely monitor the water<br />

chemistry, fouling and corrosion.<br />

Also remember, the production of<br />

hydrogen through the electrolysis of<br />

water requires very clean water.<br />

Now, engineers can do all this<br />

using readily available Emerson<br />

automation solutions such as energy<br />

management information system<br />

(EMIS) software for water balancing<br />

and leak detection, as well as<br />

detection of water overconsumption.<br />

EMIS software relies on flow<br />

meters for submetering to pinpoint<br />

overconsumption and leaks with finer<br />

granularity. <strong>Water</strong> quality control<br />

requires liquid analysers for pH,<br />

conductivity, dissolved oxygen, ozone,<br />

chlorine and turbidity so we are all set<br />

to support this.<br />

2<br />

18 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>



its water management<br />

smart with LoRaWAN<br />

Anian deploys a LoRaWAN network throughout the Sultanate of Brunei, serving<br />

the country’s government, universities and private sector to improve the<br />

management of cities, environment and agriculture, with a focus on smart water<br />

use cases, such as monitoring river water levels, wastewater pumping stations,<br />

water quality and infrastructure. These solutions are deployed using Actility’s<br />

ThingPark platform and the application provided by IoThink Solutions.<br />

Anian, a Brunei-based Internet<br />

of Things (IoT) solutions provider<br />

founded in 2019, has taken the lead<br />

in Brunei’s domestic market by<br />

providing IoT solutions based on<br />

the LoRa standard. The Sultanate’s<br />

Ministry of Development, which<br />

had a roadmap to digitise various<br />

services, commissioned Anian<br />

to develop several use cases<br />

around water, following a request<br />

for proposals, to come up with a<br />

solution that included sensors,<br />

connectivity, and data management<br />

and application dashboards, albeit<br />

with the network operation and IoT<br />

applications as managed services,<br />

with the solution hosted in the<br />

Brunei government’s data centre.<br />

The initial need was to monitor<br />

water levels in Brunei’s rivers, as<br />

flooding is very frequent and often<br />

unpredictable. It is important to<br />

be warned as soon as possible at<br />

the onset of a flood to prepare the<br />

population and limit the damage.<br />

Other recurring problems in the<br />

country included the management<br />

of wastewater and pumping<br />

stations, which often broke down,<br />

20 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


– an airport. A nearby canal has<br />

a water level that can go from<br />

zero to overflowing in 20 minutes,<br />

preventing operations on part of this<br />

airport. While waiting for the work to<br />

be done to divert the canal, the IoT<br />

solution provides immediate alerts.<br />



A significant portion of Brunei’s<br />

population lives near rivers or in<br />

villages on stilts. <strong>Wastewater</strong> from<br />

the homes is treated and released<br />

into the rivers. When there are<br />

overflows in the pumping stations,<br />

the discharge water pollutes the<br />

rivers, creating a significant odour<br />

A screenshot of the<br />

asset displacement<br />

dashboard<br />

tides and water on parking lots and<br />

highways, as well as the quality of<br />

can be triggered within hours.<br />

The Department of Drainage and<br />

nuisance for the inhabitants, who<br />

complain, after which technicians<br />

are sent to clean and reset the<br />

water and the state of the various<br />

Sewerage under the Ministry of<br />

pump.<br />

infrastructures.<br />

Development undertakes monitoring<br />

of the sewerage distribution network<br />

This system is rather inefficient and<br />

The main challenge Anian faced<br />

and river levels at various locations<br />

has negative financial risks. Pumps<br />

was the difficulty of finding an<br />

in Brunei Muara to help predict<br />

can shut down due to trash and<br />

integrated end-to-end solution<br />

flooding and detect abnormalities in<br />

debris, creating excessive vibration<br />

that includes all the necessary<br />

the sewerage system.<br />

that leads to overheating and<br />

elements, including hardware that<br />

explosion. Until now, monitoring of<br />

must adapt to complex environments<br />

River level monitoring has until now<br />

facilities and equipment has relied<br />

and potentially destructive weather<br />

been primarily based on telemetry<br />

primarily on telemetry and SCADA<br />

conditions. This starts with the<br />

technology or, in cases where this<br />

technology at only a few locations,<br />

sensors – Anian tested various entry-<br />

technology is not deployed or is<br />

in cases where this technology<br />

level sensors with a promise of IP67<br />

inoperable due to breakage or theft,<br />

is not deployed or is inoperable<br />

resistance that proved insufficient.<br />

manual monitoring with significant<br />

due to breakage or theft; or no<br />

Even the gateways required<br />

mobilised manpower.<br />

monitoring at all because of SCADA<br />

protection against storms.<br />

solutions pricing, just on reactive<br />

To create an effective system<br />

maintenance with workforce<br />

However, Anian successfully carried<br />

of preventive alerts on these<br />

sent on-site based on customer<br />

out this mission, in particular through<br />

hydrological events, Anian deploys<br />

complaints.<br />

a partnership with IoThink Solutions<br />

ultrasonic sensors connected via<br />

and Actility, which provided the<br />

LoRaWAN to monitor the water level<br />

The solution implemented by Anian<br />

bricks of the solution and all the<br />

in flood-prone rivers, a solution<br />

allows the monitoring of wastewater<br />

necessary technical support.<br />

combined with rainfall volume<br />

pumping stations, via continuous<br />


monitoring as well as rain gauges<br />

and tipping buckets to measure the<br />

measurement of pump vibrations,<br />

the use of floats and LoRaWAN<br />

Flooding is the top natural hazard in<br />

velocity of water currents.<br />

ultrasonic sensors in wells to alert<br />

Brunei. With a hot and rainy climate,<br />

if the water surface rises within<br />

the country experiences frequent<br />

The flash flooding issue affects for<br />

50cm of the cover, but also with<br />

and intense flooding episodes that<br />

example a critical infrastructure<br />

the detection of workers’ presence<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 21


of intruders or subcontractors, and smoke<br />

and dangerous gas including CO, H2S and<br />

CO2.<br />

for telemetry with a telecom station. The<br />

copper cables used are rather costly and<br />

subject to repeated theft in Brunei.<br />

and deploy for any use case. The solution<br />

is available on a white label and also exists<br />

for mobile devices.<br />

This is predictive maintenance, as it<br />

involves acting upstream in a preventive<br />

manner before customers complain, with<br />

the aim of public satisfaction. The goal of<br />

this project is to deploy IoT sensors for use<br />

cases such as water level in wells and catch<br />

basins, vibration, energy consumption of<br />

pumps and pressure in pipes.<br />



The <strong>Water</strong> department under the Ministry of<br />

Development was also looking to monitor<br />

water quality and the various related<br />

infrastructure to avoid many recurring<br />

problems.<br />

Anian has been deploying LoRaWAN<br />

sensors to detect leaks, and monitor<br />

pressure and water quality in pipes that<br />

supplies residents, with sensors placed<br />

directly in the pipes to alert to quality<br />

issues and leaks, as well as in water<br />

towers and pipes. The gateways are<br />

purchased by the Ministry and installed<br />

on the water towers through Actility’s<br />

ThingPark Enterprise and a management<br />

contract. A total of 11 gateways are already<br />

installed and 25-30 gateways are planned<br />

in the coming months with a goal of 200<br />

eventually.<br />

One of the major problems with current<br />

solutions is that SCADA sensors require<br />

a large infrastructure with a wired power<br />

supply, a shelter, and also a private network<br />

A screenshot of the asset displacement dashboard<br />



All these solutions were made possible<br />

through a collaboration between Anian,<br />

Actility, and IoThink Solutions.<br />

The use of LoRaWAN connectivity is one<br />

of the main keys to success. LoRaWAN<br />

is a widely-used wireless protocol<br />

that allows battery-powered sensors<br />

to communicate with IoT applications<br />

via a long-range, ultra-low data rate<br />

connection, resulting in longer battery life.<br />

Actility provides the LoRaWAN IoT<br />

connectivity management solution<br />

with ThingPark Enterprise, a platform<br />

that helps customers build network<br />

infrastructure by managing LoRaWAN<br />

gateways, adding sensors, monitoring<br />

network operations and controlling<br />

the flow of data to application servers,<br />

enabling the deployment of large-scale<br />

IoT projects in record time.<br />

IoThink Solutions is a software company<br />

specialising in IoT and machine-tomachine<br />

(M2M) platforms. With its suite<br />

of IoT tools, Kheiron IoT Suite, IoThink can<br />

address any IoT project in the following<br />

domains: smart building, smart energy,<br />

smart city, smart industry, and smart<br />

retail. The Kheiron platform is intuitive,<br />

quick to learn and fully interoperable, the<br />

solution’s customers can connect any<br />

sensors, use any connectivity and create<br />

Nicholas Guillou, co-founder and CEO at<br />

Anian, explained: “The Kheiron platform is<br />

particularly convenient because it requires<br />

no coding, with a responsive mobile app.<br />

The technical support provided by the<br />

IoThink and Actility teams made the project<br />

a success. The advantage of Actility’s<br />

solution is its scalability.”<br />

The IoT LoRaWAN network is a medium<br />

that is of strategic interest to the<br />

Government of Brunei as it allows for the<br />

development of broad application areas.<br />

In addition to drainage and sewerage<br />

use cases, here is a list of areas that the<br />

Ministries of Development and Department<br />

of Public Works can work on in the coming<br />

years:<br />

• Monitoring of water networks, such<br />

as pressure, flow, leaks, water quality,<br />

reservoir levels, and pumps.<br />

• Monitoring of tides by the departments<br />

concerned.<br />

• Use cases for intelligent buildings and<br />

energy savings on air quality, security,<br />

water and electricity consumption<br />

measurement, data centre environment,<br />

and parking.<br />

• Bridge and road infrastructure<br />

monitoring such as bridge pier<br />

vibration, crack monitoring, worker<br />

safety, and wind and rain monitoring.<br />

• River water quality, air quality, and<br />

weather information.<br />

Nicolas Jordan, COO at Actility,<br />

concluded: “Once again, IoT, LPWAN and<br />

a collaboration of experts are enabling<br />

the deployment of effective solutions that<br />

aim to improve people’s lives, protect<br />

the environment and lower costs. We<br />

are happy to see the progress of such<br />

interesting projects in the Sultanate<br />

of Brunei and to work with Anian and<br />

IoThink Solutions on more and more new<br />

deployments.”<br />

22 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>




for Calgary<br />

To meet the ever-growing demand from Calgarians<br />

for potable water, the City of Calgary embarked on a<br />

C$35 million (US$27.9 million) project to replace the<br />

most critical water pump station in the city.<br />

Canada’s energy sector, with much<br />

of the current economy driven by oil<br />

and gas production.<br />

With an expanding population of<br />

over 1.3 million and the continued<br />

diversification of industry and<br />

commerce, the ever-growing<br />

demand from Calgarians for potable<br />

water has to be met. To satisfy both<br />

current and future demands for<br />

safe and reliable drinking water,<br />

the City of Calgary has embarked<br />

on a C$35 million (US$27.9 million)<br />

project to replace the most critical<br />

water pump station in the city.<br />

The existing Shaganappi Pump<br />

Station, originally constructed in<br />

1978, supplies drinking water to<br />

over 200,000 residents of Calgary<br />

and its surrounding communities.<br />

Shaganappi Pump Station is<br />

Calgary’s largest pump station and<br />

is a vital component of the city’s<br />

water transmission network, which<br />

consists of 41 pump stations and<br />

23 storage reservoirs, connected by<br />

over 4,500km of underground piping.<br />

This large number of pump stations<br />

and reservoirs is required due to the<br />

varying and often rugged topography<br />

of Calgary, which divides the city into<br />

many smaller water pressure zones<br />

based on elevation.<br />


The City of Calgary owns and<br />

operates two water treatment plants<br />

– the Bearspaw <strong>Water</strong> Treatment<br />

Plant and the Glenmore <strong>Water</strong><br />

Treatment Plant. These treatment<br />

The requirements for<br />

Shaganappi involved<br />

the supply of three<br />

large RDLO 600-600<br />

pumps rated at<br />

80ML/d and three<br />

smaller Omega 300-<br />

560 pumps rated at<br />

30ML/d<br />

Calgary is one of Canada’s fastestgrowing<br />

metropolitan cities and<br />

is the major urban centre for the<br />

southern half of the province of<br />

Alberta. Calgary is located in the<br />

foothills of the Canadian Rocky<br />

Mountains, at the confluence of<br />

the Bow and Elbow Rivers. The<br />

city is, perhaps, best known<br />

internationally for its annual July<br />

rodeo and outdoor show, the<br />

Calgary Stampede. Originally<br />

founded around agriculture,<br />

Calgary is now at the heart of<br />

facilities draw their source water<br />

from the Bow River and the Elbow<br />

River, respectively. Both treatment<br />

plants combined can produce a total<br />

of 950ML of clean drinking water<br />

per day. Treated water is stored onsite<br />

at the treatment plants before<br />

being pumped into the transmission<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 23


network for distribution throughout<br />

the city.<br />

The Bearspaw plant, located in<br />

the northwest quadrant of the city,<br />

pumps water into three separate<br />

underground feeder mains, the<br />

largest of which is South Feeder,<br />

Calgary’s largest and most critical<br />

feeder main. Shaganappi Pump<br />

Station draws water directly from the<br />

South Feeder and then effectively<br />

splits the flow, adds hydraulic energy<br />

via pumping and redirects the water<br />

to both north and south Calgary.<br />

The existing Shaganappi Pump<br />

Station is over 40 years old and<br />

is past its useful life expectancy.<br />

Many of the mechanical and<br />

electrical components within the<br />

existing pump station are now<br />

obsolete, creating operational and<br />

maintenance challenges. Given<br />

the critical nature of this pump<br />

station and the extensive upgrades<br />

that would be required to ensure<br />

efficiency and reliability, the decision<br />

are designed with redundancy to<br />

allow them to continue to operate<br />

in an emergency. The existing<br />

supply pumps and drivers for existing<br />

and new water pump stations.<br />

KSB Canada was the successful<br />

The new Shaganappi<br />

Pump Station has a<br />

design capacity of<br />

220ML/d<br />

was made to replace the existing<br />

Shaganappi Pump Station utilises<br />

proponent in this stringent RFP<br />

pump station with a new pump<br />

natural gas engines to drive backup<br />

process, which saw the contract<br />

station.<br />

pumps in the event of a power<br />

awarded in <strong>May</strong> 2018. The contract<br />

outage. The new pump station<br />

included the supply of pumps and<br />

The new Shaganappi Pump<br />

will utilise a 944kW natural gas<br />

drivers for the new Shaganappi Pump<br />

Station, which was completed this<br />

generator that will be capable of<br />

Station project, along with other<br />

January, is located approximately<br />

starting and running one or more<br />

projects such as the Palliser Drive<br />

200m west of the existing facility.<br />

pumps in the event of a utility<br />

Pump Station retrofit.<br />

This will allow the city to reuse<br />

outage. The use of natural gas<br />

much of the existing underground<br />

generators in the new pump station<br />

Pasha Barazandeh, regional<br />

infrastructure, including the original<br />

installations offers an efficient,<br />

sales manager for KSB Canada,<br />

piping connection to the 1,950mm<br />

flexible and safe solution that meets<br />

commented: “The Palliser Drive<br />

diameter South Feeder. This location<br />

the city’s critical infrastructure<br />

project enabled us to demonstrate<br />

was chosen to reduce construction<br />

requirements.<br />

to the City of Calgary the capabilities<br />

costs, minimise disruption of the<br />

water system and surrounding<br />


and benefits of our Omega pumps.<br />

For this project, we supplied two<br />

communities, and facilitate a smooth<br />

Establishing a working relationship<br />

electrically-driven pumps and one<br />

transition between the existing and<br />

between KSB Canada and the City<br />

natural gas engine-driven pump to<br />

new facilities.<br />

of Calgary has been advantageous<br />

meet a pumping requirement of up to<br />

to both parties. The city issued<br />

60ML/d. The city was pleased with<br />

Calgary’s water pump stations are<br />

a Request for Proposal (RFP) in<br />

this installation and 12 months on it<br />

considered critical infrastructure and<br />

late 2017, in search of a vendor to<br />

continues to run well.”<br />

24 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


While the Palliser Drive Pump<br />

Station project was underway,<br />

details for the new Shaganappi<br />

Pump Station were being finalised<br />

and the pump supply was put<br />

into motion. The requirements for<br />

Shaganappi involved the supply<br />

of three large RDLO 600-600<br />

pumps rated at 80ML/d and three<br />

smaller Omega 300-560 pumps<br />

rated at 30ML/d to give a station<br />

design capacity of 220ML/d. This<br />

allows for a total capacity of over<br />

300ML/d with all six pumps in<br />

operation.<br />

However, such a situation is<br />

not anticipated to happen, as<br />

Barazandeh explained: “For 80%<br />

of the time, only one of each<br />

pump type might be working<br />

at the same time, servicing two<br />

different pressure zones for the<br />

water supply system.”<br />

One of the key challenges for<br />

KSB Canada was the size of<br />

the natural gas generator at<br />

Shaganappi Pump Station. “The<br />

configuration of the pumps and<br />

their power requirement had to<br />

be modified to meet and exceed<br />

the duty condition. To meet this<br />

condition, we needed to modify<br />

the pump hydraulics to maximise<br />

efficiency for the most frequent<br />

operating conditions,” he said.<br />

“This led to delivering the lowest<br />

lifecycle costs and optimum<br />

operating reliability.”<br />

trim diameter to be no more than<br />

98% of the full size and removable<br />

wearing rings on the impeller and<br />

casing. There were also several<br />

specific material requirements to<br />

satisfy national and international<br />

standards relevant to the handling<br />

of potable water.<br />


Supporting many water applications<br />

around the globe, the RDLO and<br />

Omega pumps were identified<br />

as being more than capable of<br />

meeting the customer’s specific<br />

demands. KSB’s axially split, single<br />

volute casing RDLO and Omega<br />

pumps feature a double-entry radial<br />

impeller and are designed to the<br />

requirement of the water pumping<br />

stations. They transport fluids with<br />

a minimum of low resistance, thus<br />

lowering the energy and lifecycle<br />

costs of the systems in which they<br />

are installed. Computational fluid<br />

dynamics (CFD) optimised hydraulic<br />

systems deliver both the best duty<br />

point and give operating efficiency<br />

levels of above 86%.<br />

The double-entry impeller balances<br />

the axial forces so the load on<br />

the maintenance-free bearings is<br />

minimal. The combination of solid<br />

bearing brackets, a short and<br />

rigid shaft and pre-loaded bearings<br />

ensures low vibration and extended<br />

operating life for the bearings, seals<br />

and coupling. Being axially split<br />

case pumps simplifies maintenance<br />

procedures, enabling ready access<br />

to all parts for a thorough inspection.<br />

The drive may be positioned on both<br />

the left and right of the pump without<br />

additional parts or modifications to<br />

the casing being necessary.<br />


From the original RFP process<br />

through the construction of the new<br />

facility, KSB Canada has worked with<br />

the City of Calgary, the consultant<br />

engineer Associated Engineering, and<br />

the contractor Graham Infrastructure.<br />

Fast response, technical assistance<br />

and project management were key<br />

contributions from KSB Canada.<br />

“We were faced with a very exacting<br />

RFP issued by the City of Calgary,”<br />

Barazandeh concluded. “We<br />

identified the most appropriate and<br />

proven pump types and customised<br />

them to the city’s specifications.<br />

Providing optimum hydraulics to<br />

meet or exceed these requirements,<br />

along with configuring the pumps to<br />

meet the duty conditions, were major<br />

factors in delivering a successful<br />

project.”<br />

The City of Calgary<br />

specifications stated that they<br />

required between-bearings,<br />

axially split case centrifugal<br />

pumps. Other specific<br />

requirements included suction<br />

and discharge nozzles provided<br />

with integrally cast flanges to<br />

ANSI/ASME B16.1, the impeller<br />

The configuration of the pumps and their power<br />

requirement had to be modified to meet and<br />

exceed the duty condition. To meet this condition,<br />

we needed to modify the pump hydraulics to<br />

maximise efficiency for the most frequent operating<br />

conditions, this led to delivering the lowest lifecycle<br />

costs and optimum operating reliability.”<br />

Pasha Barazandeh<br />

Regional Sales M7 anager for KSB Canada,<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 25





a critical airport<br />

application<br />

1<br />

When a utility and services provider was<br />

commissioned to create an environmentallycritical<br />

application for one of the world’s<br />

busiest airports, they collaborated with<br />

SEKO for a failsafe solution.<br />

The European airport manages more<br />

than 80 million passengers each<br />

year. Among the logistical challenges<br />

management faced to ensure a safe<br />

and efficient operation is managing the<br />

effect of cold weather on aircraft.<br />

During winter, the presence of snow<br />

and ice disrupts airflow over the wings<br />

and tail of an aircraft, hindering its<br />

ability to create lift and consequently<br />

preventing pilots from taking off.<br />

could contaminate waterways with<br />

glycol, having a devasting effect on<br />

surrounding waterborne wildlife. With<br />

up to 1,000 litres of de-icer required to<br />

clear an Airbus A380 and hundreds of<br />

flights departing daily, the pollution risk<br />

was significant.<br />

With a clear vision for sustainable<br />

growth, the airport has been working<br />

to reduce its environmental impact<br />

for several years. Hence, any<br />

contamination incident would be seen<br />

whereby contaminated particles in<br />

liquid clump together and eventually<br />

sink, allowing them to be separated<br />

and the remaining clean water safely<br />

discharged.<br />

Looking for a solution capable of<br />

managing this complex and demanding<br />

process, SEKO was approached to<br />

supply an automated polymer batching<br />

system that could separate pollutants<br />

and allow treated water to be safely<br />

discharged into a nearby watercourse.<br />

1 PolyCendos from<br />

SEKO<br />

2 A utility and services<br />

provider approached<br />

SEKO to develop an<br />

automated polymer<br />

batching system<br />

3 PolyCendos is<br />

equipped with<br />

three chambers for<br />

dissolving, maturing<br />

and storage which<br />

are interconnected<br />

by syphons, forming<br />

a flow necessary for<br />

the formation of a<br />

high-quality solution<br />

To avoid delay or cancellation of<br />

as a significant setback that results<br />

potentially hundreds of flights and the<br />

in negative publicity and impacts its<br />

Following an extensive assessment<br />

subsequent disruption to travellers, the<br />

public profile.<br />

of the site and application, SEKO<br />

airport invested in de-icing cannons to<br />

recommended its PolyCendos<br />

spray airliners with a heated glycol fluid.<br />

The airport management, therefore,<br />

polymer preparation unit (PPU) that<br />

This process ensured that settled snow<br />

commissioned a utility provider to build<br />

automatically doses up to 200 litres of<br />

and ice melted while preventing further<br />

and operate treatment works adjacent<br />

wastewater per second with flocculant.<br />

build-up once planes were airborne.<br />



to the site to improve the quality of<br />

wastewater being discharged.<br />

When designing the plant, the<br />



PolyCendos is an all-in-one system<br />

The airport was concerned that<br />

utility company decided to treat the<br />

for the preparation of polymer<br />

wastewater from this process<br />

wastewater via a flocculation process,<br />

solutions, supplied complete with<br />

26 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


2 3<br />

an IP65-rated electric control panel, dosing<br />

pumps and powder feeder.<br />

The unit has three chambers for<br />

dissolving, maturing and storage which are<br />

interconnected by syphons, forming a flow<br />

necessary for the formation of a high-quality<br />

solution. The chambers include inspection<br />

covers and emptying valves, and are made<br />

in polypropylene homopolymer (PPH) for<br />

chemical resistance and a low-friction<br />

surface.<br />

PolyCendos’ comprehensive safety<br />

features include a safety pressure switch<br />

for the automatic water supply system, an<br />

emergency stop for all components and a<br />

separate safety level switch for overflow<br />

levels.<br />


SEKO also supplied its Spring pumps<br />

coupled with Elektra digital controllers for<br />

the precise dosing of anti-foam, commonly<br />

required in wastewater processes. Elektra’s<br />

“data on demand” technology meant<br />

users could control anti-form dosing<br />

from any location via PC, laptop or smart<br />


1. Operators tip powdered polymer into<br />

a hopper from 20kg bags, ensuring<br />

compliance with manual handling<br />

regulations. When the level of the<br />

prepared solution falls below the<br />

minimum level, an alarm indicates that<br />

the powder tank must be replenished.<br />

2. The powdered polymer enters the<br />

system via a stainless-steel batching<br />

screw – managed by a precise<br />

speed regulator – and mixes with<br />

water before the resulting solution<br />

drops into tank one below and<br />

the dissolving phase begins. A<br />

customised stainless-steel agitator<br />

slowly and continuously turns the<br />

contents of the tank, ensuring<br />

thorough homogenisation of the<br />

solutions.<br />

device. Because some of the client’s site<br />

management operated multiple plants and<br />

were not always present at the airport, being<br />

able to remotely view and adjust dosage was<br />

a benefit.<br />

3. The siphon transfers the solution<br />

to the maturing chamber, where<br />

another slow agitator keeps the<br />

mixture uniform until maturing is<br />

complete.<br />

4. The solution is transferred to a<br />

storage chamber from where it<br />

can be transferred for use. When<br />

this tank is full, the powder dosing<br />

pump automatically stops and the<br />

water inlet is closed, preventing<br />

further solution from being batched.<br />

5. Two motor-driven PS2 Spring series<br />

pumps dose the polymer solution<br />

into the wastewater, with flow-rate<br />

adjustment performed automatically<br />

by an Aktua control unit, which can<br />

be calibrated during operation for<br />

maximum efficiency.<br />

With this comprehensive water-treatment<br />

system in place, airport management could<br />

ensure the quality of its discharged water,<br />

protect local wildlife and enhance its drive<br />

towards sustainable growth.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 27



addresses pipeline<br />

pressure challenge<br />

Faced with chlorine degassing issues in its 80m pipe<br />

run, a French water purification plant deploys Qdos<br />

CWT chemical metering pumps to overcome this<br />

issue with an innovative operational concept.<br />

The Villejean water treatment plant<br />

near the City of Rennes in Brittany<br />

faced a structural challenge in<br />

adding sodium hypochlorite to a<br />

drinking water storage reservoir due<br />

to the unusually long length of the<br />

pipeline transporting the chlorine.<br />

Watson-Marlow Fluid Technology<br />

Solutions (WMFTS), a manufacturer<br />

of peristaltic pumps for water<br />

treatment, has worked with most<br />

of the water treatment plants in the<br />

Collectivité Eau du Bassin Rennais,<br />

or Rennes Basin <strong>Water</strong> Authority, for<br />

several years. The authority manages<br />

the entire local water system from<br />

abstraction to tap, with responsibility<br />

for maintenance, monitoring and<br />

repair of 11 treatment plants.<br />

These assets include a 5,000m 3<br />

drinking water storage reservoir,<br />

which serves around 500,000 people<br />

in the region, distributing an average<br />

of 25,000m 3 of water through the<br />

network each day. This reservoir<br />

is fed by both the Villejean plant<br />

and the Rophémel plants, which<br />

are nearby, and the water requires<br />

chlorination at 0.3mg/litre.<br />

The plant has already employed<br />

several Qdos pumps, each fitted with<br />

a ReNu pumphead optimised for<br />

sodium hypochlorite, sulphuric acid<br />

and hydrogen peroxide applications,<br />

with discharge pressures up to 4 bar.<br />

Photo credit: kobu-agency<br />

The use of Qdos pumps for both<br />

sulphuric acid and hydrogen<br />

peroxide at the plant enabled “fast,<br />

simple and safe maintenance”<br />

compared with the diaphragm<br />

pumps deployed previously, Watson-<br />

Marlow claimed. Furthermore,<br />

replacing ReNu pumpheads<br />

requires no tools, specific training or<br />

maintenance technician intervention,<br />

the company added.<br />

28 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


However, the discharge pressure for<br />

the 15% sodium hypochlorite dosing<br />

when being added to the storage<br />

reservoir remained a concern and a<br />

priority for improvement.<br />

For structural reasons, the sodium<br />

hypochlorite tank is located inside<br />

the Villejean plant, with chlorine<br />

distributed to various injection points<br />

throughout the facility via pumps at<br />

an adjacent location. However, the<br />

linear pipe run that brings chlorine<br />

to the water storage reservoir is 80m<br />

long and along this length, chlorine<br />

degasses in the pipeline, raising the<br />

discharge pressure beyond 7 bar and<br />

causing pump accuracy issues.<br />

by other technologies to achieve<br />

a constant level of accuracy are<br />

avoided.<br />

The Qdos CWT pump runs at<br />

2 litre/hour on average, with a<br />

4-20mQ input signal. The pump has<br />

already reduced the frequency of<br />

maintenance interventions at the<br />

Villejean plant, which produces 7-11<br />

million cubic metres of drinking water<br />

per year, by 75% since its installation<br />

in December 2020.<br />

Kevin Brard, the operator of the<br />

Villejean water purification plant,<br />

said: “The Qdos CWT pump<br />

easily withstands overpressure<br />

in the long pipe run, as well as<br />

the aggressive nature of chlorine.<br />

As a result, its service life is<br />

significantly longer.<br />

“We were already satisfied with<br />

the performance of Watson-<br />

Marlow’s Qdos pumps for metering<br />

of sulphuric acid and hydrogen<br />

peroxide, as well as two Bredel 50<br />

hose pumps for lime slurry. Now,<br />

we have a new Qdos CWT pump<br />

model to feed the blench solution<br />

into our tank already.”<br />

WMFTS’s Qdos Conveying Wave<br />

Technology (CWT) chemical<br />

metering pump, launched globally<br />

last year, was initially introduced at<br />

Villejean on a trial basis in December<br />

2020. It met the abnormally<br />

high-pressure constraints of the<br />

installation. The Qdos CWT pump<br />

offers the advantages of the<br />

standard peristaltic pump, but with<br />

significantly longer service life.<br />

To achieve the peristaltic pumping<br />

action, the Qdos CWT pump<br />

incorporates an EPDM element<br />

rather than a tube, which acts<br />

against a PEEK track. The element<br />

in contact with the fluid is subject to<br />

very low stress levels, which means<br />

that the Qdos CWT pump offers a<br />

significantly longer service life than a<br />

conventional alternative, even at high<br />

pressure.<br />

In addition, Qdos CWT pumps<br />

allow the dosing of chemicals,<br />

including sodium hypochlorite for<br />

post-chlorination cycles, with high<br />

precision and regularity over the<br />

entire life of the pump. This means<br />

overdosing practices often required<br />

Qdos CWT installed at Villejean water treatment works<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 29





on Africa’s Okavango Delta<br />

The Wild Bird Trust, in partnership with National Geographic, launched a yearslong<br />

project to explore the rivers of the Okavango Delta in Southern Africa and<br />

collect baseline data on virtually every aspect of the environment in this remote<br />

region. The open-access data will be used to assess the health of the river basin<br />

over time and prompt action to protect an area that is the primary water source<br />

for a million people and one of the most biodiverse regions in Africa.<br />

The NGOWP researchers deploy In-Situ’s Aqua TROLLs to monitor<br />

water quality in the rivers of the Okavango Delta in Southern Africa<br />

(Photo credit: Wild Bird Trust)<br />

Back from a two-month expedition<br />

in the wilds of the Okavango Delta, in<br />

Southwest Africa, Rainer von Brandis,<br />

research director, and Götz Neef,<br />

research director and collections<br />

manager of the National Geographic<br />

Okavango Wilderness Project (NGOWP)<br />

team, recalled the challenges of<br />

data collection in one of the most<br />

remote and biodiverse regions on the<br />

continent.<br />

Their latest journey along the Okavango<br />

River, from Namibia’s northern border<br />

with Angola to the Okavango Delta in<br />

Botswana, was the latest in a series<br />

of trips to explore all the major rivers<br />

that sustain the delta and collect<br />

data on virtually every aspect of the<br />

environment, including water quality,<br />

water discharge, biodiversity and<br />

climate.<br />

Since 2015, a small team of researchers<br />

and regional experts have made more<br />

than a dozen river trips, paddling<br />

thousands of kilometres in dugout<br />

canoes called mekoros and collecting<br />

data critical to understanding<br />

environmental change in the<br />

region. Specific to water quality<br />

data collection, the team required<br />

instrumentation designed for spot<br />

checking along the route and for<br />

continuous water monitoring at several<br />

permanent stations.<br />


On the river trips, Neef utilised the<br />

Aqua TROLL 600 for spot checking.<br />

Every 10km, he collected data on<br />

dissolved oxygen (DO), pH, oxidationreduction<br />

potential (ORP), temperature<br />

and nitrate, with a separate device<br />

used to measure turbidity.<br />

During the trips, Neef would carry two<br />

Aqua TROLLs, in case he needs a<br />

spare. “Space is limited on the boat, so<br />

it’s helpful that they’re compact, and<br />

you can measure multiple parameters<br />

with one device,” he said. “The Aqua<br />

TROLL is easy to use, robust and<br />

completely submersible.”<br />

30 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


Aqua TROLL 600s are also deployed at<br />

three permanent monitoring stations in the<br />

delta, and plans are underway to install<br />

eight more stations, which will be outfitted<br />

with Aqua TROLLS 500s. “We’ll have solar<br />

power at those locations, so we won’t need<br />

the battery power the 600 provides,” Neef<br />

added.<br />

The continuous monitoring stations<br />

collect and transmit data on DO, pH, ORP,<br />

conductivity and pressure, which when<br />

paired with velocity data, can be used to<br />

determine water discharge.<br />

“It’s so important to get this baseline data<br />

because it hasn’t been done before,” he<br />

continued. “And this is good, credible<br />

data. I’ve been working with these sorts of<br />

devices for a long time and there used to<br />

At every 10km, the Aqua<br />

TROLL is used to collect<br />

data on DO, pH, ORP,<br />

temperature and nitrate<br />

(Photo credit:<br />

Wild Bird Trust)<br />

be a high level of inaccuracy. But the Aqua<br />

TROLL has performed well in that regard.”<br />


Once the additional monitoring stations are in<br />

place, the additional data will help complete<br />

the picture of the region’s environmental<br />

health.<br />

In the meantime, back from their latest<br />

excursion, Neef, von Brandis and others will<br />

analyse the fresh data and produce a series of<br />

technical reports and scientific publications.<br />

Then, they will return to the field to do it<br />

again. The project, organised by the Wild Bird<br />

Trust and funded by National Geographic, is<br />

expected to continue for years, in the hope<br />

that the data can be used to support crucial<br />

decisions needed to protect this essential<br />

habitat.<br />

“One of our biggest failures as humans<br />

towards our environment has been the<br />

inability to monitor change in the environment<br />

over time,” said von Brandis. “That failure to<br />

monitor change has brought us down and<br />

made us slow to respond. This baseline data<br />

is a starting point for trying to fix that.”<br />


Optimize resOurces - ensure water quality - reduce cOsts<br />


4G LTE-M/NB-IoT<br />

Data logger<br />

Flow and pressure monitoring<br />

Night flow analysis<br />

Flow rate alerts<br />

Leak detection<br />

CSO monitoring & detection<br />

learn mOre:<br />


2G/3G/4G<br />

Connected RTU<br />

Simple to use<br />

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Secure communication<br />

Alarms management<br />

learn mOre:<br />

info.sg.environment@lacroix.group<br />

www.lacroix-environment.com<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 31

FOCUS<br />

CERAMAC:<br />

A sustainable ceramic<br />

microfiltration system for<br />

water treatment<br />

Utilities are seeking sustainable solutions for their water and wastewater<br />

treatment needs. Engineers and solution providers have always looked to costeffective<br />

solutions, but the new focus dives deeper into what is sustainable, with<br />

metrics and goals for achieving a net neutral carbon outcome.<br />

By Reinout Holland And Dr Holly Shorney-Darby<br />

challenges as other filter technologies. Sand<br />

filters, while still the work-horse of surface<br />

water treatment globally, can be compromised<br />

allowing harmful pathogens to pass through.<br />

Filtration with polymeric membranes, while<br />

providing a barrier for pathogens, has had<br />

issues with fibre breaks, lesser ability to<br />

withstand higher backwash pressures for<br />

cleaning, high labour costs and downtime<br />

associated with fibre breakage repairs, loss<br />

of permeability and in many cases, a shorterthan-expected<br />

membrane service life.<br />

CeraMac is an innovative and cost-effective ceramic membrane filtration process designed by PWNT<br />

While sustainability is a goal to set our<br />

well for any society. The goal of producing<br />

sights upon, decisions about water<br />

safe, even palatable, drinking water does<br />

treatment must be also focused on other not change, but sustainability will play an<br />

metrics, such as the ability to meet water increasingly important role in evaluating<br />

quality objectives, reliability and robustness different alternatives for treatment.<br />

in managing challenging feed water.<br />

Drinking water treatment is such a critical Ceramic membranes for filtration have<br />

aspect of public health and community been gaining wider acceptance and usage<br />

prosperity that any solutions must work because they do not succumb to the same<br />

Ceramic membranes do not share the issues<br />

common to polymeric membranes, but<br />

instead, present a challenge for higher initial<br />

capital cost. However, utilities that evaluate<br />

on a lifecycle cost basis, for example, over<br />

20 years, have discovered that the initial<br />

costs of ceramic-based solutions often<br />

become less significant because operational<br />

costs are often on par or are even less with<br />

ceramic membranes. This ties directly into<br />

sustainability in the longer term.<br />

CeraMac is a ceramic membrane<br />

microfiltration system that was developed<br />

by PWNT in the Netherlands to manage the<br />

highly-polluted waters of Lake Ijssel and<br />

32 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

FOCUS<br />

became commercially available in<br />

2009. Multiple ceramic monolith<br />

modules are housed in a vessel<br />

specially designed for a pressurised<br />

membrane system that is operated<br />

in dead-end mode. A quick view of a<br />

CeraMac system implies durability,<br />

due to the industrial look of the<br />

steel infrastructure that houses the<br />

membranes. A closer examination of<br />

the individual sustainability aspects<br />

reveals a robust and sustainable<br />

solution that is future-proof.<br />

The CeraMac system has been<br />

validated and used at full-scale in<br />

Singapore (180 MLD), the UK (90<br />

MLD), Switzerland (30 MLD) and the<br />

Netherlands (120 MLD).<br />


In terms of pore size, the focus is<br />

usually on the log removal credits of<br />

a membrane for pathogens. Typically,<br />

ultrafiltration—approximately 0.04nm<br />

pore size—systems are compared<br />

of Public Health. Ultrafiltration<br />

membranes have the same removal<br />

credits for Cryptosporidium and<br />

Giardia but achieve higher virus log<br />

removals due to the smaller pore size.<br />

The installation at<br />

Choa Chu Kang<br />

<strong>Water</strong>works in<br />

Singapore includes<br />

12 CeraMac vessels,<br />

each with 90<br />

membranes<br />

The CeraMac system is a<br />

to microfiltration—approximately<br />

This extra log removal for viruses<br />

microfiltration system, which<br />

0.1μm pore size—systems for water<br />

comes with higher power consumption<br />

means that the nominal pore size<br />

treatment. The smaller pore size will,<br />

for filtration over the life of the system.<br />

is 0.1μm. Ultrafiltration, and even<br />

certainly, require higher pressure for<br />

For many locations, disinfection is<br />

nanofiltration, ceramic membranes<br />

filtration at equivalent conditions and<br />

required with membrane systems to<br />

are available in the marketplace,<br />

flux.<br />

achieve a multi-barrier approach to<br />

but their smaller pore size requires<br />

treatment, and virus inactivation by<br />

a higher feed pressure for filtration.<br />

CeraMac installations typically operate<br />

disinfection is easy to achieve with<br />

Carbon footprint analysis of any<br />

at transmembrane (TMP) pressures<br />

typical disinfection chemicals like<br />

treatment solution will include<br />

20-50kPa when the pre-treatment is<br />

chlorine.<br />

energy consumption, and PWNT’s<br />

suitable for the feed water. Smaller<br />

analysis shows it is the main<br />

pore size membrane systems will<br />

For membranes, the pressure gradient<br />

contributor to the carbon footprint<br />

undoubtedly operate at higher<br />

across the membrane measured as<br />

of technology over its lifecycle.<br />

pressures to achieve an equivalent<br />

TMP becomes an important factor to<br />

flux. The actual filtration layer of the<br />

consider. As an example, polymeric<br />

If an operator has access to<br />

ceramic MF membrane in the CeraMac<br />

ultrafiltration of a 0.04μm pore size<br />

renewable energy, the impact of<br />

is 0.1μm, and the remaining part of the<br />

membrane will have typically a 10kPa<br />

power consumption can become<br />

membrane is the support structure.<br />

higher TMP than a ceramic microfilter,<br />

less than with a non-renewable<br />

This means that the maximum<br />

and this leads to about a 25% increase<br />

energy source, however, over<br />

pressure is necessary for the<br />

of pump energy at equal flux or<br />

the 20-year service life, energy<br />

filtration layer and not the body of the<br />

throughput. This added energy adds<br />

consumption remains the main<br />

membrane, and claims that the depth<br />

up to over a 20-year plant life.<br />

contributor to the system’s carbon<br />

of ceramic impacts system pressure<br />

footprint.<br />

are unfounded.<br />

The low TMP operation for a CeraMac<br />

allows also gravity as the main filtration<br />

Energy consumption for a<br />

Also, the microfiltration membrane in<br />

driving force of the feed flow, where<br />

membrane can be viewed in terms<br />

the CeraMac system is credited with a<br />

applicable, such as in locations where<br />

of pore size, operation pressure<br />

4 log Cryptosporidium, 4 log Giardia,<br />

there is already a high head for water<br />

across the membrane, backwash<br />

and 1.0 log virus removal credit,<br />

delivery to the plant. This is already<br />

pressure and feed pressure.<br />

according to the California Department<br />

operating at a full-scale plant in the<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 33

FOCUS<br />

mountains of Switzerland, where<br />

the feed water head is more than<br />

enough to yield sufficient pressure<br />

for filtration.<br />

In addition to the low TMP<br />

operations of a ceramic<br />

microfiltration (MF) membrane,<br />

backwashing energy use is less<br />

than in other membrane systems.<br />

The CeraMac system utilises no<br />

backwash pumps, but instead<br />

conserves and stores kinetic energy<br />

for backwashing in an air-spring<br />

system. This air-spring system drives<br />

the high-pressure backwash at a low<br />

energy expenditure, which further<br />

contributes to lower overall energy<br />

use for operations.<br />


Materials of the system also must<br />

be factored into the sustainability<br />

of a system. CeraMac systems are<br />

built to match the expected service<br />

life of the CeraMac microfiltration<br />

membranes, which in practice have<br />

already proven to exceed more than<br />

20 years of service life. Ceramic<br />

membranes have a high tolerance<br />

for cleaning chemicals, and this<br />

means a wider pH range or higher<br />

oxidant or temperature exposure.<br />

Due to the high durability of ceramic<br />

materials, they can be backwashed<br />

aggressively, with higher pressure up<br />

to 5 bar.<br />

The CeraMac design philosophy of<br />

having a long service life without frequent<br />

membrane replacements and with lower<br />

overall power consumption has led to<br />

a truly sustainable solution for water<br />

utilities for the sustainable production of<br />

safe, clean drinking water.<br />

Each aspect of the ceramic<br />

membrane requires materials of<br />

the systems to be durable and<br />

strong, and with sustainability<br />

in mind, also long-lasting. Steel<br />

is versatile and meets these<br />

requirements. Plastics are not<br />

and would become brittle over<br />

time, possibly before the end of<br />

the service life of the ceramic<br />

membranes used by PWNT, these<br />

lasting more than 23 years in<br />

continuous operation.<br />

Materials other than the membrane<br />

also must factor into the<br />

sustainability review of a system<br />

and are critical to the durability and<br />

flexibility of use over the system’s<br />

service life.<br />


Breaking down a system into<br />

its individual components and<br />

considering the materials, it<br />

becomes clear if these can be<br />

recyclable for beneficial reuse.<br />

Some materials can be “pure”<br />

and some mixed components.<br />

Recycling is a key aspect of<br />

sustainability, with a cradle-tograve<br />

view of the materials. Mixed<br />

or combined materials, such as<br />

glass fibre reinforced plastics, are<br />

problematic in this regard, as the<br />

recycling process works best with<br />

single-component materials.<br />

Looking closely at the operational<br />

details, energy use and the materials<br />

of a filtration technology is necessary<br />

to evaluate sustainability and compare<br />

its merits against alternatives. Due<br />

to its long service life and individual<br />

component construction, the<br />

CeraMac ceramic membrane system<br />

is capable of yielding excellent<br />

finished water quality sustainably.<br />

Meeting these objectives allows<br />

utilities to meet many goals with a<br />

single technology.<br />

Reinout Holland is head of business<br />

development, and Dr Holly-Shorney-Darby is<br />

head of technology application and piloting<br />

at PWNT.<br />

To produce water of<br />

better quality with<br />

lower environmental<br />

impact and<br />

decreased energy<br />

consumption, the<br />

Andijk plant in the<br />

Netherlands deploys<br />

PWNT’s suspended<br />

ion exchange (SIX)<br />

and CeraMac<br />

34 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

FOCUS<br />

Photo credit: Adobe Stock Image<br />


of wastewater influent with<br />

Hach EZ7900<br />

Removing obstinate wastewater residues and extra sludge<br />

can be a difficult but necessary treatment process with<br />

considerable economic and environmental benefits.<br />

Influent toxicity represents a major risk to the<br />

treatment efficiency of biological wastewater<br />

treatment plants. Hence, it is critical to<br />

understand that if a hazardous influent<br />

suppresses wastewater biology, it can lead<br />

to permit violations, fines and extended<br />

process upsets. It will also necessitate more<br />

operator hours and change the public’s<br />

image of the facility.<br />

<strong>Wastewater</strong> treatment plant managers are<br />

increasingly being required to accommodate<br />

greater capacity, whilst at the same time<br />

complying with tighter discharge consents.<br />

Consequently, they are under pressure to<br />

optimise processes, lower process risks and<br />

improve the quality of treated effluent.<br />

There is constant pressure to increase<br />

the efficiency of wastewater treatment<br />

plants (WWTP). The efficiency of these<br />

plants is mostly measured by their rate of<br />

biodegradation and removal of nutrients<br />

which can be optimised by controlling the<br />

effect of toxic substances before reaching<br />

the plant. All substances that are detrimental<br />

to the respiration rate of bacteria can lead to<br />

a significant reduction of biodegradation in<br />

WWTP.<br />

Activated sludge used in the treatment plant is<br />

a mixture of different bacteria species which<br />

degrade substrates to grow, mainly based on<br />

the continuous consumption of oxygen. This<br />

process is conventionally named respiration<br />

and has a direct relationship between growth<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 35

FOCUS<br />

and biodegradation. Experiments<br />

microorganisms. A considerable<br />

show that with advanced respiration<br />

increase in the sugar content of the<br />

technology, online monitoring of<br />

influent, for example, would raise the<br />

toxicity in wastewater treatment plants<br />

organic load but not necessarily harm<br />

is possible.<br />

the bacteria.<br />

A biological wastewater treatment<br />

A sudden rise of alcohols from a<br />

plant with a high rate of organics<br />

production line or cleaning chemicals<br />

and nutrient removal has a high<br />

from a wash-down would dramatically<br />

throughput of wastewater with a high<br />

dimmish the plant’s biological<br />

rate of organics and nutrient removal<br />

treatment potential.<br />

under ideal conditions. This is an area<br />

where Hach is well cognizant. The<br />

As such, Hach launched an online<br />

self-cleaning sample preconditioning<br />

monitoring solution that can detect<br />

panels of the EZ7900 toxicity analyser<br />

influent toxicity and send timely<br />

allow for continuous monitoring of<br />

data to operators of biological<br />

toxicity levels at the input. It employs<br />

WWTPs, protecting activated sludge,<br />

real plant sludge so that dynamic<br />

maintaining treatment efficiency and<br />

changes in biomass viability may<br />

minimising plant downtime and failure<br />

be detected quickly, allowing for<br />

to obtain discharge consent.<br />

effective mitigating strategies to be<br />

implemented.<br />

The results of the toxicity analysis are<br />

Input toxicity, on the other hand, might<br />

impact normal plant performance,<br />

used to determine if the influent should<br />

be diverted to an emergency buffer<br />

tank.<br />

from an industrial discharge. It could<br />

EZ Series EZ7900<br />

toxicity analyser<br />

making it critical to monitor this non-<br />

result from a change in manufacturing,<br />

specific metric. The correct balance of<br />

microorganisms will be maintained and<br />

treatment will proceed with maximum<br />

efficiency, if the influent remains<br />

consistent, supplying appropriate<br />

nutrients and at the right proportion of<br />

aeration.<br />

Any abrupt or unexpected changes in<br />

the influent, on the other hand, have<br />

the potential to disrupt the microbial<br />

Online monitoring of influent<br />

toxicity mitigates risk and helps<br />

plant operators stay compliant:<br />

• Improves treatment efficiency<br />

and avoids sudden drop in<br />

performance<br />

• Avoids downtime and plant<br />

failure<br />

• Helps avoid discharge<br />

compliance failure<br />

a cleaning process, a spill or<br />

inadvertent release of dangerous<br />

chemicals at an industrial WWTP.<br />

The Hach EZ7900 toxicity analyser<br />

can provide timely warnings by<br />

continually sampling and measuring<br />

influent toxicity. This allows for<br />

suitable mitigation measures to be<br />

implemented. The instrument’s cycle<br />

time is about 10-15 minutes. Hach<br />

balance and impair wastewater<br />

reported that many of its customers<br />

treatment efficiency. A toxic influent<br />


regularly sample once every hour, 24<br />

can injure microorganisms to the<br />

point that the treatment lane must be<br />


1. Reduction of risk<br />

hours a day, seven days a week. This<br />

ensures that any toxicity issues are<br />

blocked, emptied and regenerated in<br />

Hach has eliminated one of the key<br />

identified at any time of the day or<br />

extreme cases.<br />

risk factors impacting the operation<br />

night.<br />

of biological WWTPs by automating<br />

To predict influent toxicity, total<br />

the monitoring of influent toxicity.<br />

2. Process optimisation<br />

organic carbon (TOC), occasionally<br />

Toxic influents can come from several<br />

Online monitoring aids process<br />

paired with total nitrogen, has been<br />

various places. Toxicity can occur<br />

optimisation by efficiently protecting<br />

utilised in the past. It is crucial to<br />

in a municipal wastewater treatment<br />

plant biomass from toxicity,<br />

remember, however, that not all<br />

facility because of the intentional or<br />

maximising treatment capacity and<br />

influent changes are harmful to<br />

unintentional release of toxic waste<br />

lowering aeration energy and financial<br />

36 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

FOCUS<br />

costs. Continuous monitoring also<br />

aids in sludge loading optimisation,<br />

nitrification maintenance and sludge<br />

waste with effluent prevention.<br />

Integration of<br />

EZ7900 toxicity<br />

analyser<br />

3. Process insights from plantspecific<br />

measurements<br />

The Hach EZ7900 uses a self-cleaning<br />

sampling-filtration system to gather<br />

sludge that has been sampled from<br />

the treatment facility. With plantspecific<br />

sludge, the data from the<br />

analyser is specific to the biomass<br />

of that treatment plant and dynamic<br />

changes in viability are quickly<br />

observed. Importantly, continual<br />

toxicity monitoring aids in a better<br />

understanding of the biological<br />

processes of the plant. This has<br />

produced insights for many users,<br />

which have been leveraged to improve<br />

process control.<br />

It is not commonplace for plants to<br />

deflect influent when it exceeds 50%<br />

of the dose that would be deadly to the<br />

biomass, as a rule of thumb. Several<br />

EZ7900 users have been able to<br />

examine the impacts of greater dose<br />

rates with the benefits of continuous<br />

toxicity monitoring, and some have<br />

discovered that the action and divert<br />

level can be set as high as 85% for<br />

their plant.<br />

Potential sources of influent<br />

toxicity<br />

• Production dependent<br />

wastewater<br />

• Clean-in-place (CIP) processes<br />

• High salt concentrations<br />

• Toxic waste in the collection<br />

system<br />

• Increased heavy metal<br />

discharges<br />

• Tank truck cleaning station<br />

• Chemical toilet disposal<br />

• Collection’s system chemical<br />

root clean<br />



Prior to analysis, a representative<br />

sample of influent and a homogenous<br />

sample of sludge from the plant’s<br />

aeration lanes must be obtained.<br />

The EZ9110/9120 series automatic<br />

sampling and sample preconditioning<br />

devices, which Hach developed with<br />

several years of field experience, make<br />

this possible. These self-cleaning<br />

preconditioning systems employ<br />

pressured air and rinse water, and are<br />

designed for completely automated,<br />

unattended operation.<br />

The EZ7900 toxicity analyser features<br />

an industrial panel PC with controller<br />

software and a 5.7-inch TFT colour<br />

user interface for data visualisation onsite.<br />

Visibility and analysis parameters<br />

can be changed, and data trends<br />

can be seen using the software. It<br />

manages the functioning of up to<br />

eight influent sample streams in a<br />

single analyser, with results conveyed<br />

via distinct outputs such as mA or<br />

Modbus for each stream.<br />

This multichannel capacity lowers the<br />

cost per sample point substantially,<br />

and each channel can have a<br />

conventional 4-20mA signal output<br />

with alarm processing so that<br />

necessary and timely action can<br />

be taken. The filters and analyser<br />

are cleaned automatically, and the<br />

user can specify the calibration and<br />

validation frequency.<br />

Intelligent, automated features help<br />

to improve analytical performance,<br />

reduce downtime and reduce human<br />

intervention. Nonetheless, Hach<br />

offers a variety of Service Agreements<br />

to ensure that plant operators’<br />

systems run smoothly and reliably.<br />

The health of the biomass in a<br />

biological wastewater treatment plant<br />

is critical to the plant’s long-term<br />

effectiveness, so being able to detect<br />

chronic and acute influent toxicity<br />

in enough time to adopt appropriate<br />

mitigation measures is critical. Some<br />

toxicity incidents may be overlooked<br />

due to manual sampling, or alarms<br />

may be provided too late.<br />

Artificial biomass is not indicative of<br />

plant circumstances, hence online<br />

approaches that do not employ the<br />

plant’s actual biomass to estimate<br />

the oxygen update rate (OUR) of<br />

microbial respiration will be of limited<br />

utility.<br />

The Hach EZ7900 provides the option<br />

for limiting the risk posed by toxic<br />

influents while also giving insights<br />

for process control, improving<br />

performance and avoiding discharge<br />

consent failure by employing the<br />

plant’s biomass and automating the<br />

process to enable 24/7 monitoring.<br />

The EZ7900 can play a significant<br />

role in optimisation of the treatment<br />

processes leading to increased<br />

efficiency of the plant operation<br />

because of the relationship between<br />

biodegrading and respiration, toxicity<br />

analysis is a key parameter to control<br />

and protect the WWTP.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 37

FOCUS<br />


two steps back<br />

Organisations worldwide are helping to solve<br />

water scarcity, but more has to be done to meet<br />

the United Nations’ sustainability goals.<br />

By Sandra DiMatteo<br />

preventing them from attending school and<br />

obtaining a good education. Since water is<br />

the top priority of the villages, these women<br />

are also prevented from earning the wages<br />

they need to support their families.<br />



The Uttar Pradesh State <strong>Water</strong> and<br />

Sanitation has been improving the state’s<br />

water infrastructure with a mission to bring<br />

drinking water to every household. One of<br />

its projects is the Khatan Group of Villages<br />

<strong>Water</strong> Supply Scheme, awarded to Larsen<br />

& Toubro Construction.<br />

Women in Khatan walk several kilometres daily to fetch water<br />

Around the globe, water scarcity affects In India, the government is also looking for<br />

millions of people each year. From the ways to have clean water available across the<br />

mountainous region of Tibet, where they country, particularly in small rural villages.<br />

need to consider building dams for water To illustrate, the state of Uttar Pradesh has<br />

conservation, to the subtropical area<br />

approximately 1.5 million people living in<br />

of Santa Catarina in Brazil, where they nearly 400 villages, such as the small village<br />

face the worst crisis in nearly 30 years, of Khatan that struggle every day to access<br />

we can see that access to potable water clean water. In these villages, many women<br />

is the most challenging issue the world walk several kilometres each day to fetch<br />

faces.<br />

water—often taking their children along,<br />

The project includes designing and<br />

constructing an intake well to collect water<br />

from the Yamuna River, as well as an<br />

approach bridge that connects to a water<br />

treatment plant, 40 intermediate booster<br />

pumping stations, 121 elevated storage<br />

tanks to distribute the water through a<br />

1,531km pipeline network, and a 2,129km<br />

distribution pipeline network that serves the<br />

community. Larsen & Toubro Construction<br />

needed to provide a complete solution,<br />

from concept to commissioning, that<br />

extends into 10 years of operation and<br />

maintenance for what will be an integrated<br />

smart water system.<br />

There were many engineering challenges,<br />

magnified by a very tight timeline. Within<br />

six months, the team had to generate 890<br />

BIM models for 200 different structures,<br />

38 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

FOCUS<br />

all considering various soil interactions.<br />

The design of the water supply system<br />

proved to be a significant challenge, so the<br />

team turned to Bentley software to help<br />

determine the best and most economical<br />

design.<br />

Larsen & Toubro used an in-house<br />

electronic document management<br />

system (EDMS) to manage the five<br />

disciplines involved in the drawings. The<br />

documents were uploaded to the EDMS<br />

database for verification by corresponding<br />

section heads. The section heads of the<br />

corresponding disciplines reviewed the<br />

drawings and gave clearance that all of<br />

the requirements were updated. After<br />

clearance, the workflow was automatically<br />

routed for interfacing to the respective<br />

disciplines, then re-routed to the design<br />

division head for final review.<br />

Using OpenFlows <strong>Water</strong>GEMS, the<br />

engineering team rapidly designed<br />

the network, putting them ahead of<br />

schedule. With the help of STAAD.Pro,<br />

the team was able to quickly design the<br />

structural foundations for the treatment<br />

facility, elevated storage tanks and other<br />

structures, allowing the design work<br />

to be completed 30% faster than they<br />

would have using manual methods. They<br />

used PLAXIS to secure the safety of the<br />

work area, determining safe excavation<br />

sloping and saving time and money. The<br />

engineering design phase was ahead of<br />

schedule, saving two precious months<br />

due to digitalisation support from Bentley<br />

applications, helping them to deliver the<br />

project 25% faster.<br />





Enabling access to water for the community<br />

and completing this project faster will have<br />

enormous value for the local households,<br />

food, culture, health, education, economics<br />

as well as the integrity of the natural<br />

environment. The project will enable<br />

1.5 million people to achieve sustainable<br />

health through quality drinking water. From<br />

improving access to education to enabling<br />

women to earn a wage instead of fetching<br />

water, this social commitment is impacting<br />

the quality of life in this area.<br />

A key consideration in the engineering of<br />

this project was that the treatment facility<br />

had to fit within a very limited area. Larsen<br />

& Toubro were sensitive and considerate in<br />

keeping the sacred grounds of the nearby<br />

temple untouched. Located directly in the<br />

middle of the space to avoid upsetting the<br />

local community, they found innovative<br />

ways to connect pipelines around the<br />

temple grounds. It is a testament to Larsen<br />

& Toubro’s values, skills and caring culture<br />

that they prided themselves on this attention<br />

to detail.<br />

The Indian government has long trusted<br />

Larsen & Toubro and their sustainability<br />

practices shine as evidence in their work<br />

for economic, environmental and social<br />

responsibility. As a builder of major<br />

infrastructure projects in India, they are<br />

constantly contributing to the quality of<br />

life of the communities they impact. Their<br />

team fosters continuous growth towards<br />

ESG-related concerns such as climate<br />

stewardship, green initiatives and the<br />

circular economy with a dedication to reuse,<br />

recycle, repair and refurbish as long as<br />

possible.<br />



Located in the high-altitude alpine region of<br />

Tibet, the PZ Dam is a hydro complex that<br />

is part of a water conservancy initiative.<br />

It is focused on irrigating 2,600 hectares<br />

downstream and generating power to<br />

help improve both urban and rural water<br />

supply and the regional water ecological<br />

environment. Knowing the importance of<br />

subsurface findings, the survey and design<br />

team faced challenging terrain, extreme<br />

environmental conditions and a short<br />

construction period.<br />

Given the fragile ecological environment and<br />

extreme cold, traditional survey methods<br />

could not accommodate the investigation.<br />

China <strong>Water</strong> Resources Beifang Investigation,<br />

Design and Research explored digital data<br />

acquisition and 3D modelling of geological<br />

data but found that many software products<br />

could not integrate and maximise data<br />

potential.<br />

Using Bentley’s ContextCapture, China<br />

<strong>Water</strong> found they could more easily process<br />

data for geological visibility. They also<br />

deployed ProjectWise for multidiscipline<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 39

FOCUS<br />

Sustainable Development Goals (SDGs)<br />

6 established this lofty universal call to<br />

action as part of the 17 sustainability<br />

goals agreed upon by the UN General<br />

Assembly in 2015 to achieve a better and<br />

more sustainable future for all by the year<br />

2030. SDG 6 is to ensure the availability<br />

and sustainable management of water<br />

and sanitation for all. It encompasses<br />

six outcome-oriented targets, including<br />

safe and affordable drinking water and<br />

improving water quality.<br />

<strong>Water</strong> crisis is a serious threats in India and worldwide<br />

collaboration and to streamline data sharing.<br />

The team digitalised the entire survey<br />

process, including field data acquisition and<br />

transmission, data storage and analysis, 3D<br />

geological modelling, and data simulation and<br />

analysis. The solution saved RMB¥400,000<br />

(US$62,809) in survey costs and over 50% in<br />

survey time, improving data accuracy by over<br />

10% and work efficiency by over 15%.<br />

Establishing a digital twin enhanced project<br />

management by 10% and set an industry<br />

benchmark. By going digital the team saw<br />

their efficiency improve from 40% to 95%<br />

compared to traditional survey methods. Using<br />

a digital twin approach, the construction team<br />

reduced the amount of excavation needed<br />

during construction and the impact on the<br />

environment and provided a successful and<br />

proven plan for similar high-altitude projects<br />

both in China and throughout the world.<br />



After a severe water crisis, over 100<br />

municipalities in Brazil declared a state of<br />

emergency and rationing and supply rotation<br />

went into effect. This water crisis triggered the<br />

city of Joinville to develop contingency plans<br />

to maintain the water supply during drought<br />

conditions. Preliminary simulations produced<br />

water shortages, so they sought a more<br />

comprehensive network study.<br />

They used Bentley applications to create a<br />

digital twin and perform hydraulic analysis<br />

of the distribution system, ensuring<br />

water supply while saving R$4.5 million<br />

(US$962,361) as a result of maximising<br />

operational performance and efficiency. It<br />

was technology that enabled this innovative<br />

solution and gave residents peace of mind.<br />

At Bentley, our mission is to provide<br />

innovative software and services for<br />

the enterprises and professionals who<br />

design, build and operate the world’s<br />

infrastructure—advancing both the global<br />

economy and the environment for improved<br />

quality of life. Connecting the entire water<br />

cycle, engineering firms trust Bentley<br />

software to accelerate the design and<br />

construction phase, then once in operation,<br />

utilities can optimise the water system<br />

to avoid supply interruptions, ensure<br />

compliance with regulations and mitigate<br />

risks. Partnering for success to digitalise<br />

the water project and asset lifecycle,<br />

Bentley is leading the way to the digital<br />

water future.<br />




The Larsen & Toubro project demonstrates<br />

the importance of accelerating access<br />

to clean water. The United Nations (UN)<br />

But globally, we need more. We are<br />

making good progress with Bentley and<br />

Larsen & Toubro working together to<br />

accelerate the delivery of water supply<br />

to the communities of India. However,<br />

it is estimated, overall globally, that<br />

by 2025, the number of people that<br />

will live in water-scarce regions due<br />

to growing drought issues caused by<br />

climate change and population growth<br />

will in fact increase, not decrease. In<br />

many places, we will be in a worse<br />

position than we were in 2015 when<br />

the goal was established. More people<br />

will have difficulty accessing a clean,<br />

safe water supply daily. And by 2050,<br />

more than half of the world’s population<br />

could be living in water-stressed regions<br />

due to the impact of climate change<br />

and droughts, urbanisation as well as<br />

conflict and war.<br />

<strong>Water</strong> safety and sustainability are more<br />

fragile than we think. There are no other<br />

alternatives when it comes to water goals<br />

and failure is not an option. We are all<br />

part of the solution and technology will<br />

help us get there faster. Sustainability<br />

means rethinking how we do things and<br />

doing them smarter and with greater<br />

transparency. Collaborating with<br />

stakeholders in a connected digital twin<br />

environment will help us learn from the<br />

past, make better decisions today and<br />

create a better future for all.<br />

Sandra DiMatteo is industry marketing director of<br />

water infrastructure at Bentley Systems.<br />

40 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

FOCUS<br />



critical membrane systems<br />

Automated scraper strainers pre-filter water and wastewater to protect<br />

fragile membrane systems from damage caused by large, suspended<br />

particles, reducing maintenance and replacement costs.<br />

By Del Williams<br />

Automatic scraper strainers<br />

are motorised and designed to<br />

continually remove suspended<br />

particulates in industrial<br />

process water and wastewater<br />

to the specific size required<br />

down to 0.003 inches<br />

For industrial process facilities,<br />

membrane filtration is a valuable,<br />

commonly used means of filtering<br />

water and wastewater. The challenge<br />

is that membrane systems are<br />

delicate and can be easily damaged<br />

by large particulates in the water. A<br />

pre-filtration step eliminates this risk<br />

by removing oversized suspended<br />

solids to prevent damage, eliminate<br />

unnecessary maintenance, and<br />

reduce the cost of premature<br />

membrane replacement.<br />

Among the pre-filtering options<br />

available, automatic self-cleaning<br />

scraper strainers are increasingly<br />

popular because they are affordable,<br />

require very minimal maintenance<br />

or attention, and can remove solids<br />

down to 75µm. The strainers allow<br />

for continuous, uninterrupted flows<br />

even during blowdown cycles.<br />

When compared to filters that<br />

must be manually cleaned or even<br />

conventional backwash systems,<br />

automatic scraper strainers can save<br />

substantial costs on maintenance and<br />

membrane replacement.<br />



Although various filtration methods<br />

use membranes, the most mature is<br />

pressure-driven membrane filtration,<br />

which relies on a liquid being forced<br />

through a filter membrane with a<br />

large surface area. Depending on<br />

the size and type of the particles<br />

involved, the process could be<br />

categorised as reverse osmosis<br />

(RO), nanofiltration, ultrafiltration or<br />

microfiltration.<br />

In general, RO is used to produce<br />

potable water or deionised water.<br />

Nanofiltration is used in wastewater<br />

treatment as well as by the<br />

petrochemical industry to purify<br />

gas condensates and the chemical<br />

industry for solvent recovery.<br />

Ultrafiltration and microfiltration<br />

are increasingly used in water and<br />

wastewater treatments.<br />

Numerous industries have high<br />

water usage that can require<br />

further treatment of water, including<br />

automotive, aerospace, oil and gas<br />

extraction, refining, textiles, and pulp<br />

and paper mills. Ultrapure water,<br />

which must meet strict limits of<br />

certain constituents in the water such<br />

as suspended and dissolved solids,<br />

dissolved gases, organic carbon<br />

and biological organisms, is utilised<br />

in electronics and pharmaceutical<br />

manufacturing processes.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 41

FOCUS<br />

1 2<br />

In industrial applications, water treatment is<br />

also vital to protect downstream equipment<br />

from fouling, scaling, corrosion and other<br />

forms of damage or premature wear due to<br />

contaminants present in the source water. For<br />

these reasons, cooling towers and boiler feed<br />

water are generally pre-treated.<br />

Membrane filtration is also utilised to treat<br />

non-potable water sources such as gray<br />

water and reclaimed and recycled “purple<br />

pipe” water.<br />

Because the membranes are made using<br />

thin, porous sheets of material, failing to<br />

sufficiently pre-filter any large, suspended<br />

particles from the water can cause severe<br />

damage and fouling – leading to premature<br />

replacement and unnecessary maintenance,<br />

according to Robert Presser, vice-president<br />

of Acme Engineering, a North American<br />

manufacturer of industrial self-cleaning<br />

strainers.<br />

“Most membrane filter manufacturers<br />

recommend that all influents be pre-screened<br />

from 100-500µm to maintain membrane filter<br />

efficiency,” said Presser, whose company<br />

manufacturers environmental controls<br />

and systems with integrated mechanical,<br />

electrical and electronic capabilities.<br />

He added that automatic scraper strainers<br />

are typically installed before the intake<br />

plenum of membrane filters, after the supply<br />

pumps.<br />


As an alternative to sand filters, centrifugal<br />

separators and basket types strainers,<br />

automatic scraper strainers provide<br />

improved membrane protection while<br />

reducing required maintenance.<br />

Automatic scraper strainers from Acme<br />

Engineering can provide continuous removal<br />

of suspended solids to comprehensively<br />

protect membrane systems. The automatic<br />

units are motorised and designed to<br />

continually remove suspended particulates<br />

in industrial process water and wastewater<br />

to the specific size required down to 0.003<br />

inches.<br />

Conventional manual strainers can become<br />

clogged quickly due to limitations in<br />

straining areas. When that occurs, cleaning<br />

or media replacement is required, which<br />

increases maintenance costs. The other<br />

alternative for fine straining is automated<br />

backwash-style strainers of various designs.<br />

As particle sizes grow larger, however, large<br />

contaminants can clog up the backwash<br />

system or remain in the body of the strainer,<br />

requiring manual removal and interruption of<br />

the process flow.<br />

With the automatic scraper strainer,<br />

cleaning is accomplished by a springloaded<br />

blade and brush system, managed<br />

by a fully automatic control system. Four<br />

scraper brushes rotate at 8rpm, resulting<br />

in a cleaning rate of 32 strokes per<br />

1 Automated scraper strainers pre-filter water and<br />

wastewater to protect fragile membrane systems<br />

from damage caused by large, suspended<br />

particles, reducing maintenance and replacement<br />

costs<br />

2 Automatic self-cleaning scraper strainers are<br />

increasingly popular because they are affordable,<br />

require minimal maintenance or attention, and can<br />

remove solids down to 75µm<br />

minute. The scraper brushes get into the<br />

wedge-wire slots and dislodge resistant<br />

particulates and solids. This approach<br />

enables the scraper strainers to resist<br />

clogging and fouling when faced with<br />

large solids and high solids concentration.<br />

It ensures a complete cleaning and is<br />

effective against even organic matter<br />

“biofouling”.<br />

With this type of system, manual<br />

maintenance for cleaning is eliminated.<br />

Blowdown occurs only at the end of the<br />

intermittent scraping cycle when a valve is<br />

opened for a few seconds to remove solids<br />

from the collector area. Liquid loss is below<br />

1% of total flow.<br />

With so much to gain, industrial<br />

plant managers might consider selecting<br />

an automated, self-cleaning system that<br />

is essentially “set-and-forget”, where<br />

automatic scraper strainers comprehensively<br />

protect delicate membranes and allow<br />

personnel to focus on other aspects<br />

of the facility.<br />

Del William is a technical writer.<br />

42 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>





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Pablo Publishing & Exhibition Pte Ltd | www.waterwastewaterasia.com



invest in our planet<br />

A scheme from innovation consultancy Isle – called the Trial Reservoir (TR)<br />

– aims to save the equivalent of 30,000 people’s worth of carbon emissions<br />

per year by driving water innovation. Dr Joss Burgess, head of the TR project<br />

at Isle, provides a look at the first tranche of trials in this initiative.<br />

An aerial view of<br />

Gambia, where one<br />

of the first Trial<br />

Reservoir projects is<br />

taking place<br />

The climate crisis is one of the biggest<br />

challenges of our time and requires<br />

urgent, global attention. So how can<br />

the water sector respond to these<br />

challenges and act more boldly to<br />

meet these urgent challenges head<br />

on?<br />

The water sector itself is a major<br />

contributor to greenhouse gas<br />

emissions worldwide and it stands to<br />

reason more needs to be done to help<br />

the sector invest in, and accelerate<br />

the adoption of, technologies which<br />

can help the water sector achieve<br />

carbon neutrality.<br />

The sector is also traditionally<br />

very risk-averse, which often<br />

results in the slow uptake of<br />

mitigation technologies. Meanwhile,<br />

innovations undergo trials without<br />

implementation due to diverse<br />

barriers including cost.<br />

This is where Isle’s Trial Reservoir<br />

(TR) comes in – by providing<br />

technology companies with access<br />

to trial loan funding. Launched in<br />

November last year, it is evergreen,<br />

as the repaid loans are recycled into<br />

further trials.<br />

A look at the first three trials<br />

demonstrates the scope and aims of<br />

the TR project, whether in developing<br />

nations or the UK.<br />

44 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


GAMBIA<br />

e<strong>Water</strong>’s treatment, supply and<br />

e-wallet billing and metering system<br />

provides customers in Wellingaraba<br />

with potable water 24/7 using solar<br />

power and gravity. It uses pre-payment<br />

SmartTags to enable SmartTaps that<br />

dispense water and deduct credit.<br />

Local technicians maintain the system<br />

and local shops sell credit. Each<br />

SmartTap dispenses 1,000 litres/day<br />

and each litre is said to save 3.03kg<br />

CO2 equivalent to reduced fossil fuel<br />

use.<br />

This trial supplies 500 previously<br />

unserved consumers and eliminates<br />

the use of paraffin and charcoal for<br />

boiling water at home.<br />

SPAIN<br />

iVapps’ reusable combined inline<br />

sensors and isolation valves for supply<br />

networks, which are being trialled on<br />

the island of Mallorca, can be repaired,<br />

replaced, upgraded and recalibrated<br />

under full line pressure, avoiding costly<br />

and disruptive shut-offs.<br />

The cartridges self-generate energy<br />

from flow, considerably reducing the<br />

operational carbon footprint compared<br />

to similar systems. Their carbon cost<br />

of fabrication is lower than competing<br />

technologies, and when they eventually<br />

become irreparable, they are<br />

recyclable.<br />

UK<br />

Orege’s Seamer, which is being trialled<br />

in Yorkshire, delivers sludge at higher<br />

thicknesses than traditional equipment,<br />

but the sludge is still pumpable and<br />

with the high-quality filtrate.<br />

The volumes of sludge transported<br />

are often reduced by more than<br />

two-thirds, reducing carbon footprint<br />

and expenditure on haulage. Seamer<br />

requires minimal engineering and<br />

construction outlay, lowering the<br />

carbon footprint of construction and<br />

capital expenditure too.<br />

The TR project provides trial funding,<br />

enabling end-users to adopt<br />

technology with minimal financial<br />

risk, while simultaneously guiding<br />

and supporting trials from start to<br />

finish and ensuring best scientific<br />

practice is adopted.<br />

Access to loans depends on a trial<br />

and purchase agreement between<br />

the technology vendor and the<br />

user that describes the trial’s key<br />

performance indicators (KPIs) and<br />

critical success factors (CSFs) and<br />

the post-trial purchase if the trial<br />

meets its KPIs. This enables enduser<br />

implementation with minimal<br />

financial risk and forces the cultural<br />

barriers to implementation to be<br />

addressed.<br />

Its objectives are to:<br />

• Accelerate the industry towards<br />

net zero carbon by supporting<br />

over 10 trials per year through to<br />

implementation,<br />

• Deploy £1 million (US$1.2 million)<br />

per year in trials,<br />

• Achieve a success rate of six out<br />

of 10 trials and 70% by amount<br />

invested,<br />

• Reduce pilot-to-implementation<br />

time by 80%, and<br />

• Alleviate 120,000 tonnes of<br />

carbon per year.<br />

The TR is supported by 10<br />

international partners, including<br />

engineering, procurement and<br />

construction (EPC) companies,<br />

investors and utilities. It brings<br />

together end-users, start-ups and<br />

non-profits – helping overcome the<br />

barrier of who pays for trials and<br />

defining the path and processes to<br />

implementation.<br />

The parameters for ‘success’ are<br />

bespoke to each trial and agreed<br />

upon by the vendor and end-user<br />

before the trial commences. The<br />

trials’ CSFs are whatever would<br />

trigger purchase by the user,<br />

including cost, ease of use, reliability<br />

and technical performance.<br />

Before each trial, Isle’s team works<br />

with the end-user and vendor to<br />

identify a suitable trial location and<br />

format. Isle undertakes due diligence<br />

of the technology, vendor and user<br />

and administers legal documentation<br />

and loan payments.<br />

Working with end-user and vendors,<br />

they design a robust, credible<br />

trial. At the end of the trial, Isle<br />

disseminates positive news in<br />

collaboration with vendors and enduser<br />

to more than 1,700 industry<br />

professionals in over 100 countries<br />

via Isle’s World <strong>Water</strong> Innovation<br />

Forum, <strong>Water</strong> Action Platform, and<br />

Utility CEO Forum.<br />

The TR has the potential to globally<br />

increase and accelerate the uptake<br />

of clean technologies. By adopting<br />

this model, the industry can be<br />

catapulted to where it needs to be in<br />

the race against catastrophic climate<br />

change.<br />

The positive impacts could reach far<br />

beyond climate change mitigation<br />

– the TR model of money, plus<br />

technical validation and immediate<br />

implementation could be applied to<br />

other issues, such as water quality.<br />

As this model becomes more<br />

common, it will lead to a seismic shift<br />

in the industry’s attitude towards<br />

technology trials, making it more<br />

forward-thinking, responsive and<br />

effective overall.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 45




internal closed-loop<br />

cooling system<br />

Cooling the motor is one of<br />

the most crucial elements<br />

in pumping – it is even more<br />

important in submersible<br />

pumps that operate in dry<br />

conditions or with partially<br />

submerged motors.<br />

Pushing the boundaries<br />

of pumping, the Tsurumi<br />

AVANT MQ-series comes<br />

with an integrated internal<br />

closed-loop cooling system<br />

that allows continuous dry<br />

operation of sewage pumps.<br />

Tsurumi’s response to the growing<br />

market demand for fully dry operation<br />

of submersible pumps in applications<br />

like sewage ejector dry-pits or tanks<br />

with extreme water level fluctuations<br />

is its Tsurumi AVANT MQ-series.<br />

Integrated with the internal closedloop<br />

cooling system, the MQ-series<br />

can be utilised in fully submerged<br />

conditions, where periodic nonsubmergence<br />

of the motor can be<br />

expected.<br />

46 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


Tsurumi AVANT MQ-series pumps<br />

are equipped with IE3 efficiency<br />

motors, which can be operated under<br />

continuous S1 duty in dry conditions<br />

when paired with the internal closedloop<br />

cooling system. The MQ-series<br />

pumps in the dry specification are<br />

equipped with double stainlesssteel<br />

jackets, effectively creating two<br />

separate chambers around the motor<br />

body.<br />

Inside these stainless-steel jackets, a<br />

coolant mixture of glycol and water is<br />

circulated in a closed-loop. Through<br />

the inner chamber, the coolant rises<br />

while the heat from the stator and<br />

motor frame is transferred to the<br />

coolant. And from the outer chamber,<br />

the hot coolant flows down below the<br />

oil chamber to exchange heat through<br />

the coolant cover with the pumping<br />

media. A specially designed fibreglass<br />

reinforced plastic axial impeller<br />

ensures continuous recirculation of the<br />

coolant inside the jacket around the<br />

closed loop.<br />


MQ-series<br />

Discharge Bore: 50 – 600mm<br />

Motor Output: 1.8 – 355 kW<br />

The low viscosity of the mixture and<br />

high heat transfer capacity ensures<br />

quick cooling with minimal energy<br />

required to circulate the coolant. The<br />

coolant maintains its properties in subzero<br />

conditions up to -10ºC, providing<br />

consistent performance in a wide<br />

range of operating conditions.<br />

As the cooling jacket is completely<br />

isolated from the pumping media,<br />

waste material or debris in the<br />

wastewater does not come into direct<br />

contact with the coolant. Even when<br />

pumping heavily fouled liquid, Tsurumi<br />

claimed that there is “zero possibility”<br />

of coolant contamination and any<br />

compromise in cooling efficiency.<br />

With full prevention of ingress of the<br />

solid matter in the cooling jacket,<br />

the cooling efficiency is “insensitive<br />

to impurities” and is consistent for a<br />

longer period ensuring trouble-free<br />

pumping, the company added.<br />

Furthermore, the closed-loop cooling<br />

system runs on a different chamber<br />

independent from the mechanical seal<br />

chamber. This innovation prevents<br />

any form of contamination of the<br />

coolant from the pumping media,<br />

even if the first mechanical seal fails.<br />

And while the pump maintenance has<br />

been scheduled for mechanical seal<br />

inspection, the cooling system can still<br />

operate continuously.<br />

The integrated closed-loop cooling<br />

system can be furnished into all<br />

MQ-series pumps. Therefore,<br />

hydraulics with open channel<br />

impellers, chopper impellers,<br />

vortex impellers, grinder impellers<br />

and high head impellers can<br />

be operated in completely dry<br />

conditions. The flexibility available<br />

to the pump users through the<br />

variations which are customised<br />

to match the site requirements<br />

provides a custom-built touch to<br />

the pumping world.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 47





What’s your style?<br />

Seasonal layup is just around the corner for many<br />

industries that rely on boilers for winter heating. But<br />

regardless of the time of the year, proper protection<br />

during boiler shutdown is critical to avoiding<br />

serious corrosion issues that can lead to plugging,<br />

leakage or shortened service life. Cortec’s boiler<br />

layup “animals” are designed to address these<br />

issues and improve traditional layup methods that<br />

can be cumbersome at best and non-existent or<br />

dangerous at worst. The only question is which<br />

Cortec boiler layup style to choose.<br />


Dry layup is an option for long-term<br />

soluble packaging and close the<br />

boiler openings. VpCI fills the boiler<br />

drained and cooled. There is no need<br />

for product removal or additional<br />

Boiler Lizard VpCI<br />

powder<br />

corrosion protection – whether for<br />

internals with protective vapours that<br />

flushing at boiler start-up. One Boiler<br />

a seasonal shutdown or a facility<br />

form a corrosion inhibiting layer on<br />

Gecko protects approximately 100<br />

mothballing project. Instead of<br />

the metal surfaces. When it is time to<br />

gallons of enclosed boiler volume.<br />

relying on desiccants or nitrogen<br />

return the boiler to service, the Boiler<br />

purges, which can lose their<br />

Lizard can be left to dissolve in the<br />

Boiler Dragon is designed to meet<br />

effectiveness or threaten worker<br />

makeup water. Boiler Lizard is most<br />

the dry layup protection needs of<br />

safety in the latter case, Cortec<br />

commonly used for mid-size boilers.<br />

the largest boilers. This ready-to-<br />

boiler “animals” for dry layup are<br />

use waterborne multi-metal VpCI is<br />

easy to handle.<br />

Facilities with smaller boilers may<br />

applied by fogging into the drained<br />

choose to adopt the Boiler Gecko.<br />

boiler and steam components.<br />

For instance, Boiler Lizard contains<br />

This ready-to-use VpCI fogging fluid<br />

Cortec claimed this as a “safer<br />

vapour phase corrosion inhibitor<br />

is packaged in an air-powered spray<br />

alternative to nitrogen blankets” and<br />

(VpCI) powder packaged inside<br />

can for a quick and easy layup for<br />

more effective and convenient than<br />

a water-soluble film tubing.<br />

waterside and fireside components<br />

desiccant. Boiler systems preserved<br />

Application is simple – place<br />

where Boiler Lizard is not practical.<br />

with Boiler Dragon can be returned<br />

the Boiler Lizard into the boiler<br />

Boiler Gecko should be sprayed<br />

to service quickly by simply filling the<br />

waterside, slit open the water-<br />

inside the boiler after it has been<br />

boiler with makeup water.<br />

48 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>



For situations like short-term<br />

boiler layup or boiler redundancy<br />

when the boiler needs to remain<br />

filled, a wet layup option might be<br />

preferred.<br />

Cortec offers the Boiler Iguana as<br />

an option for boilers on standby.<br />

The procedure for protection of<br />

boilers on standby is to apply sulfite<br />

and maintain high pH levels. This<br />

requires frequent testing, which<br />

often falls by the wayside and leads<br />

to corrosion issues after all.<br />

The Boiler Iguana can eliminate<br />

these high-maintenance activities.<br />

The corrosion inhibitor can<br />

be added to the feedwater or<br />

condensate system and pumped<br />

to the boiler. The boiler can either<br />

be shut down for layup or kept on<br />

low fire for standby. Multi-phase<br />

corrosion inhibitors protect metal<br />

below and above the water level.<br />

Start-up is fast because the Boiler<br />

Iguana is compatible with other<br />

water treatment chemicals and<br />

there is no need to drain or refill the<br />

boiler before bringing it back online.<br />

The Boiler Salamander is a<br />

wet-layup option for high-purity<br />

steam boilers. It is effective at<br />

low concentrations in deionised<br />

or reverse osmosis water. The<br />

boiler does not need to be drained<br />

or opened to apply the Boiler<br />

Salamander or to bring the boiler<br />

back online.<br />


The Boiler Turtle can be used for<br />

wet or dry layup and is ideal when<br />

the boiler may need to be brought<br />

back online much quicker than<br />

a dry layup allows. The Boiler<br />

Turtle can be added directly to the<br />

feedwater and condensate system,<br />

pumped to the boiler and left to sit in<br />

the offline system for 24 hours. The<br />

boiler can then be drained for dry<br />

layup or left at a high-water level for<br />

wet layup.<br />


START-UP<br />

When performing dry layup with the<br />

Boiler Lizard, users can plan for a<br />

good start-up by using Boiler Egg<br />

as a companion product. Although<br />

applied at the same time, the Boiler<br />

Egg remains dormant until the boiler<br />

is refilled at start-up. This is a critical<br />

time when cold untreated makeup<br />

water rushes into the system and<br />

heightens the risk of oxygen pitting<br />

and subsequent corrosion problems.<br />

The Boiler Egg comes in a pouch<br />

that is readily dissolved upon water<br />

contact, releasing active ingredients<br />

that scavenge oxygen and passivate<br />

metal during the initial filling of the<br />

system.<br />


Cortec has many options to ensure<br />

boilers are kept in the best possible<br />

condition during a shutdown. The<br />

remaining decision is to choose which<br />

boiler treatment matches the boiler’s<br />

size and layup requirements.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 49




treatment<br />

plants<br />

Mutag BioChip MBBR carrier media<br />

Combining expertise from<br />

both companies, a strategic<br />

alliance between DMT<br />

and Mutag aims to jointly<br />

implement turnkey wastewater<br />

treatment projects for the<br />

industrial sector worldwide.<br />

The age of “survival of the fittest”<br />

is over – the future will be won by<br />

companies that cooperate with<br />

each other, according to the trend<br />

monitor of the German Future<br />

Institute. International engineering and<br />

consulting company DMT has been<br />

working on this since 1737, enabling<br />

joint progress in complex engineering<br />

assignments across the world.<br />

A new milestone is the recently sealed<br />

strategic cooperation with Mutag,<br />

a German specialist in the field of<br />

biological wastewater treatment, by<br />

signing a cooperation agreement. This<br />

collaboration aims to jointly implement<br />

turnkey wastewater treatment projects<br />

for the industrial sector worldwide.<br />

To this end, both companies offered<br />

individual, customised solutions<br />

that are designed for technologically<br />

demanding applications.<br />

Creating more efficient processes<br />

and saving costs, pooling resources<br />

to position themselves sustainably<br />

in the market for large orders –<br />

corporate cooperation offers several<br />

advantages. Especially when<br />

companies complement each other’s<br />

skills, as is the case with DMT and<br />

Mutag.<br />

Responsible for EPC and EPCM in<br />

plant construction was Christian<br />

Heiermann, head of industrial<br />

engineering for DMT, who said:<br />

“Thanks to the cooperation with<br />

Mutag, we can jointly offer turnkey<br />

wastewater treatment plants<br />

worldwide. And that from the initial<br />

planning to turnkey construction<br />

and commissioning.” This offer is<br />

particularly relevant for companies in<br />

the steel, chemical and petrochemical,<br />

paper and food industries.<br />

“The treatment of wastewater<br />

consists of several individual steps<br />

in engineering, so it makes sense<br />

to combine the synergies of the two<br />

companies to map all the steps,”<br />

Heiermann continued. While Mutag<br />

specialises mainly in the area of<br />

design and engineering, DMT can<br />

complement its competencies to<br />

implement turnkey projects and plants<br />

for wastewater treatment, as he added:<br />

“We have many years of experience in<br />

process engineering, in the planning<br />

and construction of plants for a wide<br />

range of industries. Mutag brings us<br />

the expertise in the field of wastewater<br />

treatment.”<br />

In addition, Mutag contributes its<br />

developments, such as the Mutag<br />

BioChip moving bed biofilm reactor<br />

(MBBR) carrier media, which enables<br />

savings in investment and operating<br />

50 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


DMT seals cooperation with Mutag to jointly implement turnkey wastewater treatment projects for the industrial sector worldwide<br />

costs. Jesper Brix, CEO of<br />

Mutag, explained: “We are<br />

proud of contributing with our<br />

product and proven technology.<br />

Our sustainable vision and<br />

purpose align with the DNA and<br />

foundation of DMT. Therefore,<br />

we see great possibilities in<br />

combining our competencies in<br />

future projects.”<br />

Gas processing is another<br />

DMT’s strength. For instance,<br />

the company has developed a<br />

process to make the purification<br />

of coke-oven gas more resourceconserving<br />

and energy-friendly,<br />

as Umalan Gogilan, project<br />

manager at DMT, elaborated: “As<br />

soon as ancillary recovery plants<br />

are operated, there is always the<br />

task of treating wastewater. Our<br />

clients have often brought Mutag<br />

on board for this.”<br />

Gogilan recalled the first joint<br />

orders and described the<br />

cooperation as a partnership<br />

of equals. “We maintain good<br />

communication with each<br />

other,” he said. “Our customers<br />

also benefit from this. To be<br />

able to offer them solutions<br />

from a single source with a<br />

central contact partner in the<br />

future, transparency, trust and<br />

commitment form the foundation<br />

of the high-quality cooperation.”<br />

The advantages and synergy<br />

effects of this agile, dynamic<br />

cooperation have since been<br />

recognised by the customers<br />

of both companies who are<br />

already using them. Looking<br />

forward to future joint projects,<br />

Heiermann concluded: “Although<br />

the foundation stone for the<br />

Excellence in flow & level measurement.<br />



• Easily measure the flow of clean<br />

fluids from the outside of the<br />

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cooperation was not laid until<br />

November 2021, we are already<br />

working on a feasibility study<br />

for a company in Canada and a<br />

proposal for a major project in<br />

Turkey.”<br />


Portable Transit-Time Flow Meter from Pulsar<br />

• Use the PTFM 6.1 on a wide range<br />

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• Contact us for a quote today!<br />

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WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 51

[Webinar] IFAT <strong>2022</strong> Technology Mission<br />

e-Roadshow<br />

Jointly organised with IFAT, GWP and DWA<br />

24 Feb <strong>2022</strong>, Webex<br />


OF THE<br />


WATER<br />







The Singapore <strong>Water</strong> Association (SWA) will be leading a Technology<br />

Mission in conjunction with IFAT <strong>2022</strong>, a trade fair for water, sewage, waste<br />

and raw materials management which will take place from 30 <strong>May</strong>-3 Jun<br />

<strong>2022</strong> in Munich, Germany. This mission will focus on business opportunities<br />

and challenges in Europe in the post-COVID era while gaining insights, R&D<br />

technologies, products, trends and developing potential cross-border<br />

technology and business collaboration with exhibiting companies.<br />

Katharina Schlegel, exhibition director of IFAT, Rebekka Neef, public<br />

relations officer of GWP, and Rüdiger Heidebrecht, head of department<br />

training and international corporation at DWA, shared the latest on the<br />

exhibition and what is expected from the mission.<br />

[Webinar] Nitro<br />

– Shortcut Nitrogen Removal<br />

Jointly organised with Fluence Corporation<br />

3 Mar <strong>2022</strong>, Webex<br />

More than 120 participants attended the informative webinar Nitro<br />

– Shortcut Nitrogen Removal co-organised by SWA and Fluence<br />

Corporation. Dr Wendy Tu, business development director for South East<br />

<strong>Asia</strong> of Fluence Corporation, gave an introductory welcome address while<br />

Gilad Yogev, global MABR product manager for Fluence Corporation,<br />

shared the breakthrough technology with some case references.

ESG Differentiators: Sustainability Risks and Opportunities in the <strong>Water</strong> Sector<br />

16 Nov 2021, Complimentary, Webex<br />

Climate-related risks and the<br />

expected transition to a lowercarbon<br />

economy impact most<br />

economic sectors and industries.<br />

While changes associated with<br />

a transition to a lower-carbon<br />

economy present a significant risk,<br />

they also create opportunities for<br />

organisations focused on climate<br />

change mitigation and adaptation<br />

solutions. Transitioning to a<br />

lower-carbon economy requires a<br />

transformation of business models<br />

and leveraging of innovative<br />

technologies.<br />

Dr Augustine Quek, senior<br />

environmental engineer at ESG,<br />

shared how businesses can manage<br />

sustainability risks for organisational<br />

resilience. More than 80 participants<br />

attended this webinar.<br />

Technical Visit: Sembcorp Tengeh<br />

Floating Solar Farm<br />

Jointly organised with NWSDB, Sri Lanka<br />

24 Mar <strong>2022</strong>, Webex<br />

To explore water opportunities in Sri Lanka, SWA hosted the<br />

webinar entitled Access to Safe Drinking <strong>Water</strong> and Sanitation to<br />

All with the National <strong>Water</strong> Supply and Drainage Board (NWSDB).<br />

More than 50 attendees learnt how NWSDB covered 40% of its<br />

population with piped drinking water to SLS standards in the past<br />

40 years, plans of doubling this reach to 80% by 2025 and increase<br />

the plant capacity by 2 million cubic meters per day and laying<br />

40,000km of pipes within four years.<br />

[Technical Site Visit] Takeda<br />

Singapore Plant<br />

25 Mar <strong>2022</strong>, Singapore Island Country Club<br />

A total of 15 SWA members visited the Takeda Singapore Plant.<br />

The agenda includes a video play of the Takeda Singapore Plant, a<br />

plant tour of Takeda’s manufacturing areas, Takeda’s zero-carbon<br />

emissions building, a tour of utility rooms and glycol chillers as<br />

well as the wastewater treatment plant.<br />

[PUB Sharing Session] Coastal Protection Department Strategies and Plans<br />

Jointly organised with PUB, 31 Mar <strong>2022</strong>, Webex<br />

More than 80 participants attended the quarterly PUB Sharing Zoe<br />

Ong, senior engineer of the coastal protection department at PUB,<br />

gained insightful knowledge on coastal protection strategies and<br />

regulatory framework, lead site-specific engineering studies as well<br />

as the preparations for the implementation of subsequent coastal<br />

protection measures. Ong also shared about the upcoming coastal<br />

protection research programme to support the development<br />

of solutions that are effective, multi-functional, adaptive and<br />


SWA Golf @ SIWW <strong>2022</strong><br />

17 Apr <strong>2022</strong>, Singapore Island Country Club<br />

In conjunction with the Singapore<br />

International <strong>Water</strong> Week (SIWW)<br />

<strong>2022</strong>, the SWA Golf tournament was<br />

held for the fifth time on 17 Apr <strong>2022</strong><br />

at the Singapore Island Country Club.<br />

The SWA Golf <strong>2022</strong> attracted 144<br />

golfers—including foreign government<br />

officials, PUB, regional water utility<br />

leaders, and global and local water<br />

professionals in the water industry—<br />

and was a social gathering while golfing<br />

for business networking. Guests were<br />

treated to a sumptuous fusion lunch<br />

and lucky draws were won. Desmond<br />

Tan, Minister of State, Ministry of Home<br />

Affairs and Ministry of Sustainability<br />

and the Environment was the guest of<br />

honour.<br />

Singapore International <strong>Water</strong> Week <strong>2022</strong><br />

18-20 Apr <strong>2022</strong>, Marina Bay Sands Expo and Convention Centre<br />

After four years, Singapore<br />

International <strong>Water</strong> Week (SIWW)<br />

returned as an in-person event with<br />

over 15,000 international attendees<br />

descending on the city-state’s<br />

shores with 240 exhibitors. A total<br />

of 47 companies exhibited under<br />

the Singapore Pavilion where over<br />

200 B2B meetings took place.<br />

It was a fruitful event where SWA<br />

and Singapore Business Federation<br />

co-hosted the Singapore Business<br />

Forum, which comprises three<br />

main segments—MoU signing<br />

ceremonies, panel discussion<br />

and introduction of 12 Singapore<br />

companies. SWA is honoured to<br />

have established the MoU signing<br />

ceremonies with British <strong>Water</strong>,<br />

International <strong>Water</strong> Association,<br />

Nanjing International <strong>Water</strong> Hub<br />

and IES Academy, the training arm<br />

of The Institution of Engineers<br />

Singapore.<br />

The panel discussion was moderated<br />

by Sean Ong, deputy director of<br />

urban solutions and infrastructure<br />

services, Enterprise Singapore, with<br />

panellists Chew Men Leong of ST<br />

Engineering, Tan Cheng Guan of<br />

Sembcorp Industries, Tan Boon Leng<br />

and Tay Peng Cheng of <strong>Water</strong>-Waste<br />

Subcommittee, who provided the<br />

audience with a new perspective<br />

in fostering partnerships with<br />

technology.<br />

Some 29 exhibitors presented and<br />

shared more about their products<br />

and capabilities at the Singapore<br />

Pavilion Product Showcase at The<br />

Stage. More than 150 attendees<br />

were present and the opening<br />

remarks were delivered by Chew<br />

Men Leong, president of SWA. The<br />

event was also graced by Michèle<br />

Blom, Dutch Vice Minister for <strong>Water</strong><br />

Management, and Margriet Vonno,<br />

Ambassador to the Kingdom of the<br />

Netherlands to Singapore.<br />

To the end of the week of SIWW<br />

<strong>2022</strong>, SWA co-hosted the second<br />

edition of the Canadian <strong>Water</strong> Tech<br />

Forum with The High Commission<br />

of Canada in Singapore on Earth<br />

Day. Jean-Dominique Ieraci,<br />

High Commissioner of Canada to<br />

Singapore, delivered his welcome<br />

address followed by presentations<br />

of the Canadian delegates as well<br />

as PUB, Enterprise Singapore,<br />

Sembcorp Industries and <strong>Asia</strong>n<br />

Development Bank in the morning,<br />

and was followed by a business<br />

matchmaking session in the<br />

afternoon. The forum ended with<br />

nice wines on a high note.



43rd Singapore <strong>Water</strong> Industry Nite<br />

(SWIN)<br />

12 <strong>May</strong> <strong>2022</strong><br />

Venue: PUB <strong>Water</strong>hub Auditorium Level 2 @ SgWA<br />

Sponsors: China Harbour (Singapore) Engineering Company<br />

and UES Holdings<br />

SWA will be hosting the 43rd Singapore <strong>Water</strong> Industry Nite<br />

(SWIN) after more than two years. Programme highlights<br />

include sharing sessions by China Harbour Engineering Company<br />

(CHEC) and UES Holdings (UESH), updates on SWA activities and<br />

presentations by PUB Singapore and Imagine H2O <strong>Asia</strong>. The sitdown<br />

dinner with wines will follow at Marina Point, SgWA Level<br />

1 for registrants and guests.<br />

SWA Technology Mission to IFAT <strong>2022</strong><br />

30 <strong>May</strong>-3 Jun <strong>2022</strong><br />

As part of SWA’s continuous effort to enhance its members’<br />

competitiveness through exploring new markets and business<br />

opportunities, SWA will lead a Technology Mission in conjunction<br />

with IFAT <strong>2022</strong> from 30 <strong>May</strong>-3 Jun <strong>2022</strong>. The mission will focus<br />

on a better understanding of post-COVID business opportunities<br />

and challenges in Europe.<br />

Key takeaways for delegates:<br />

• Pre-arranged networking sessions and customised B2B<br />

meetings to seek new areas of cooperation and synergies.<br />

• Meet with key agencies, industry groups, institutes,<br />

municipalities and regional trade associations in Europe.<br />

• Site visits to relevant plants to understand their current and<br />

future infrastructure developments.<br />

• Gain the latest market insights, products and trends and<br />

develop potential cross-border technology and business<br />

collaboration with exhibiting companies.<br />



(joined from February to April <strong>2022</strong>)<br />


1. ATL Industries Pte. Ltd.<br />

2. Bosons Consulting Group Pte. Ltd.<br />

3. Pall Filtration Pte. Ltd. (Hach Singapore)<br />


1. JD <strong>Water</strong>s Pte. Ltd.<br />

2. Innoveng (S) Pte. Ltd.<br />

3. Spencer Ogden Pte. Ltd.<br />

4. Wam Spore BHM Pte. Ltd.<br />

5. <strong>Water</strong>oam Pte. Ltd.<br />


1. George Yuan Gaoqiang<br />

2. Neo Hong Glap<br />

<strong>2022</strong> EVENTS CALENDAR<br />

<strong>2022</strong> will be bustlingly filled with water shows, technology and business<br />

missions, networking events and webinars. SWA has an exciting and<br />

interesting line-up of water series with PUB, Singapore’s national water<br />

agency.<br />

Download the SWA Events Calendar at https://www.swa.org.sg/wp-content/<br />

uploads/2021/10/Events-Calendar-<strong>2022</strong>.V6.pdf.<br />

To stay connected to the latest updates on SWA, visit https://www.swa.org.<br />

sg, and follow us on LinkedIn or Telegram.<br />


SWA welcomes all organisations who are actively involved and interested<br />

in the water and wastewater industry to join the agency as either Ordinary,<br />

Associate or Institutional members.<br />

Sign up at https://www.swa.org.sg/membership/sign-up-online.



wastewater “skimmer-separator”<br />

tackling floating sludge<br />

Stockholm-based SurfCleaner has<br />

introduced the SCW 6000 skimmer<br />

separator to its portfolio of innovative<br />

solutions. Designed to address the<br />

challenge of managing floating sludge,<br />

the SCW 6000 can collect, separate and<br />

recover 6,000 litres of sludge, grease<br />

and other floating debris, empowering<br />

wastewater treatment plants to reduce<br />

water use, power consumption, manual<br />

work, aeration and use of active carbon<br />

and chemicals.<br />

Accumulating in large volumes, sludge<br />

residue is created as a by-product of<br />

the wastewater treatment processes,<br />

coming in the form of solid, semisolid or<br />

slurry residual material. Floating sludge,<br />

in particular, is costly, time-intensive and<br />

energy-draining to manage, according to<br />

SurfCleaner, with operators traditionally<br />

resorting to manual flushing and pumping<br />

with vast quantities of water. The surfacelevel<br />

sludge rots after about 15 days,<br />

releasing noxious odours.<br />

SurfCleaner presents a fully automated<br />

solution with the SCW 6000, minimising the<br />

labour-intensive process while improving<br />

working conditions and general health and<br />

safety. In addition to sludge collection,<br />

the system also separates the material,<br />

presenting an opportunity for reuse in the<br />

form of biogas or fertiliser, thus contributing<br />

to the circular economy.<br />

Johan Jubner, vice-president of sales at<br />

SurfCleaner, revealed the firm will initially<br />

target the Nordics with Sweden presenting<br />

“major opportunities” alone with circa 2,300<br />

wastewater plants. However, attention will<br />

soon turn global, through SurfCleaner’s<br />

extensive distributor networking spanning<br />

the European Union (EU), Middle East and<br />

Americas.<br />

He explained: “The product has been<br />

developed in response to industry demand,<br />

specifically addressing the challenges<br />

presented by floating sludge. It offers<br />

several core benefits, including eliminating<br />

manual work and heavy pumping which<br />

boosts environmental standards and general<br />

working conditions.<br />

“From a commercial standpoint, it<br />

streamlines several operational processes<br />

while slashing water and energy usage.<br />

It further increases the overall supply of<br />

renewable energy through the recycling<br />

of waste. In terms of figures, based on<br />

calculations from current pilot projects,<br />

clients have estimated annual savings<br />

approaching SEK600,000 (US$64,334) per<br />

year.”<br />

SurfCleaner has been finalising pilot stage<br />

testing with three separate machines<br />

installed in live working environments across<br />

Sweden. Estimations from one wastewater<br />

operator, based on initial findings revealed<br />

by SurfCleaner, showed the SCW 6000 has<br />

a separation capacity to process around 66<br />

tonnes of liquid sludge per year. This, the<br />

company added, could be converted into<br />

5% dry matter content and further used to<br />

produce biochar or biogas corresponding to<br />

370MWh of renewable energy per annum.<br />

SurfCleaner’s vice-president of sales, Johan Jubner<br />

(left), and vice-president of international sales, Stefan<br />

Wall Qvist, with the SCW 6000<br />

“The considerable amount of water used<br />

to treat floating sludge, through traditional<br />

flushing and pumping techniques leads<br />

to major water mixing. This means the<br />

energy contained within the floating sludge<br />

is ultimately lost,” Jubner elaborated. “In<br />

addition, floating sludge which is pumped<br />

away is not used as a resource either,<br />

as energy-intensive and costly drainage<br />

and drying would be required. Our pilot<br />

projects have shown that the SCW 6000<br />

can revolutionise this process with the<br />

more efficient collection and separation<br />

of floating sludge for reuse in the circular<br />

economy. The machine also demonstrated a<br />

direct impact on treatment plants’ process<br />

parameters, enabling further energy<br />

efficiency.”<br />

56 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>



LCA and carbon calculations<br />

to iTwin platform<br />

Bentley Systems has announced the<br />

availability of integrated workflows for<br />

lifecycle assessment (LCA) and embodied<br />

carbon calculation capabilities in the<br />

Bentley iTwin platform to support the<br />

sustainable development goals (SDGs) of<br />

infrastructure projects. This integration<br />

is a result of Bentley’s collaboration with<br />

One Click LCA, a Finnish provider of LCA<br />

and environmental product declaration<br />

software.<br />

The partnership marks a “natural step”<br />

in Bentley’s strategy for empowering<br />

its users to achieve SDGs, particularly<br />

in addressing climate action and<br />

decarbonising infrastructure.<br />

Infrastructure digital twin solutions will<br />

be an essential enabler and accelerator<br />

of carbon transparency and disclosure<br />

use cases, and the adoption of digital<br />

twin solutions will help accelerate<br />

the transformation of infrastructure<br />

performance.<br />

impact of an infrastructure project<br />

involves a constant stream of design<br />

changes coming from various engineering<br />

disciplines. By unifying these data streams,<br />

users can quickly create a quantity<br />

takeoff report at the right aggregation<br />

level required for LCA calculations while<br />

reducing the LCA workflow from weeks to<br />

hours.”<br />

The One Click LCA integration is<br />

designed to create time savings and<br />

improve accuracy. Users can incorporate<br />

engineering data created by diverse<br />

design tools into a single view using the<br />

Bentley iTwin platform, generate a unified<br />

report of materials and quantities and<br />

share it with One Click LCA via the cloud.<br />

This integration gives users the ability to<br />

analyse environmental footprint, accelerate<br />

environmental reporting, perform project<br />

optioneering and optimise the selection of<br />

materials and products.<br />

Rodrigo Fernandes, director of empowering<br />

sustainable development goals at Bentley<br />

Systems, added: “One Click LCA can actively<br />

contribute by helping our users accelerate their<br />

low-carbon pathways – adopting low-carbon<br />

materials and products, minimising resource<br />

consumption, and optimising structural design<br />

– in every type of infrastructure, not just vertical<br />

infrastructure.”<br />

With the ability to integrate LCA workflows<br />

with the Bentley iTwin platform, users will<br />

be empowered with new opportunities for<br />

environmental intelligence around embodied<br />

carbon and environmental footprints of linear<br />

infrastructure projects.<br />

With this integration, Bentley’s<br />

infrastructure digital twin solutions<br />

powered by iTwin, and third-party<br />

applications built on the Bentley iTwin<br />

platform can unlock infrastructure LCA<br />

workflows. The Bentley iTwin platform is<br />

an open, scalable, platform-as-a-service<br />

offering, enabling an ecosystem of<br />

developers to create and bring to market<br />

solutions that address infrastructure issues<br />

by leveraging digital twins.<br />

Kaustubh Page, director of product<br />

management of the Bentley iTwin platform,<br />

explained: “Tracking the environmental<br />

Exporting quantities to One Click LCA from an infrastructure digital twin via the Bentley iTwin platform<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 57


PULSAR<br />


Pulsar Measurement’s<br />

PTFM 6.1 portable<br />

transit time<br />

flow meter<br />


portable transit<br />

time flow meter<br />

Pulsar Measurement has<br />

introduced the PTFM 6.1 portable<br />

transit time flow meter. Designed<br />

for challenging flow applications<br />

in industrial environments,<br />

the PTFM 6.1 unit is a marked<br />

improvement on the PTFM 1.0<br />

model, with enhanced signal<br />

processing hardware and three<br />

interchangeable and non-invasive<br />

transducer sizes optimised for a<br />

wide range of pipe sizes and materials,<br />

and a new rugged IP67 design.<br />


Setup is relatively simple as it only<br />

requires “a couple of minutes” to<br />

configure the PTFM 6.1 with the<br />

specific application parameters,<br />

Pulsar Measurement claimed. Multiple<br />

transducer sets optimised for a wide<br />

range of pipe sizes and materials,<br />

improved signal processing hardware,<br />

standard factory calibration and<br />

intuitive on-screen diagnostics provide<br />

maximum confidence in the accuracy<br />

and reliability of the measurements.<br />


With a rugged IP67 design, enhanced<br />

signal processing, interchangeable<br />

transducers and an intuitive user<br />

interface with a built-in data logger, the<br />

PTFM 6.1 is readily equipped to meet<br />

challenging installation environments<br />

and applications.<br />


Designed to reduce waste and ready<br />

for the uncertain requirements of the<br />

future, the integrated USB-C port<br />

allows the PTFM 6.1 to expand its input<br />

and output capability without having to<br />

replace the whole meter. Regardless<br />

of the requirements flow measurement<br />

might require in the future, Pulsar<br />

Measurement is confident in meeting<br />

these challenges and supporting<br />

operators in their future equipment<br />

upgrades required.<br />

58 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>





water and wastewater<br />

treatment plants<br />

A webinar that highlights how Danfoss’ systems can<br />

work coherently to help operators enhance energy<br />

efficiency in the desalination process in their water<br />

and wastewater plants.<br />

Shortage of freshwater has spurred<br />

innovation to find efficient and climatefriendly<br />

solutions that turn seawater into<br />

fresh, clean water. Reverse osmosis is one<br />

such technology that requires less energy<br />

than other desalination techniques.<br />

Danfoss has attempted to innovate and set<br />

new standards for high-pressure pumps<br />

in making freshwater in a sustainable and<br />

energy-efficient way.<br />

Typically, water and wastewater treatment<br />

processes account for 25-40% of the<br />

municipal electricity consumption from<br />

its energy-intensive processes and<br />

continuous operation cycle. By using AC<br />

drives to control the speed of motors in<br />

pumps, blowers, mixers and dewatering<br />

applications, Danfoss can help reduce<br />

energy consumption and optimise energy<br />

production from wastewater treatment<br />

plants.<br />

As such, Danfoss will be hosting a<br />

webinar titled Achieving Energy Efficiency<br />

in Desalination, <strong>Water</strong> and <strong>Wastewater</strong><br />

Treatment Plants. Speaking at the webinar<br />

are Vijaykumar Subramaniam, regional<br />

sales manager, ASEAN region, and Glenn<br />

Lemoncito, business development manager,<br />

water and wastewater, <strong>Asia</strong>-Pacific, from<br />

Danfoss. Both Lemoncito and Subramaniam<br />

will highlight the distinctive technology of<br />

Danfoss’ drives, high-pressure pumps and<br />

iSave energy-recovery devices and share<br />

how these systems can work coherently in<br />

helping plant operators to enhance energy<br />

efficiency in the desalination and water and<br />

wastewater treatment process.<br />

<strong>Water</strong> and wastewater<br />

treatment process is<br />

energy-intensive and<br />

requires a continuous<br />

operation cycle<br />

Subramaniam has more than 27 years in the<br />

water and wastewater industry, spending<br />

the majority of his time with OEMs such as<br />

Enersave, Veolia, Nalco, Sigma <strong>Water</strong> and<br />

many more. For Lemoncito, he has been<br />

with Danfoss for more than a decade and<br />

is a professional with more than 20 years’<br />

experience in variable frequency drive (VFD)<br />

application and knowledge in the water and<br />

wastewater business. With his record in<br />

business development and sales by engaging<br />

with different stakeholders of project sales,<br />

Lemoncito creates differentiation through the<br />

value of a product.<br />

Hosted on Zoom, the webinar will take place<br />

on 31 <strong>May</strong> <strong>2022</strong>. The webinar is open to all,<br />

particularly municipal facility managers, design<br />

engineers, wastewater plant operators, process<br />

engineers and facility owners.<br />

Participants can discover the latest technology<br />

in desalination and wastewater treatment that<br />

Danfoss has to offer and how they can reduce<br />

their desalination costs with Danfoss’ four<br />

core technologies. Furthermore, participants<br />

can also find out how they can reduce energy<br />

consumption in their desalination and water<br />

treatment process; achieve an energy-efficient<br />

design of desalination and wastewater<br />

treatment using high-pressure pumps, drives,<br />

energy-recovery devices<br />

and pressure and fluid<br />

control devices; and<br />

optimise, control and<br />

monitor the performance<br />

of the motors of pumps,<br />

blowers and mixers.<br />

Register here<br />

Vijaykumar Subramaniam (left) and Glenn Lemoncito<br />

will be the speakers for Danfoss’ Achieving Energy<br />

Efficiency in Desalination, <strong>Water</strong> and <strong>Wastewater</strong><br />

Treatment Plants webinar on 31 <strong>May</strong> <strong>2022</strong><br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 59



WATER WEEK <strong>2022</strong><br />

successfully enabled<br />

partnerships for climate action<br />

SIWW<strong>2022</strong> concluded on a high note, bringing together<br />

the global water community to accelerate climate action<br />

and the co-creation of mitigation and adaptation solutions.<br />

on Climate Change (IPCC) report<br />

urging immediate action to tackle<br />

climate change, the programmes at<br />

SIWW<strong>2022</strong> were designed to spur<br />

synergistic exchange and the cocreation<br />

of mitigation and adaption<br />

solutions.<br />

To this end, SIWW<strong>2022</strong> paved the<br />

way for a wide range of key initiatives<br />

and public-private partnerships that<br />

would strengthen climate resilience<br />

in Singapore and beyond, push<br />

new sustainability frontiers and<br />

open the door to potential business<br />

opportunities.<br />

These include:<br />

• Official opening of the Jurong Island<br />

Desalination Plant, which marked<br />

another important milestone in<br />

Singapore’s journey for water<br />

sustainability and the enhancement<br />

of water security.<br />

• Establishment of RSK Centre of<br />

Grace Fu, Minister<br />

for Sustainability<br />

and the Environment,<br />

Singapore, and<br />

Dr Amy Khor,<br />

Senior Minister of<br />

State, Ministry of<br />

Sustainability and<br />

the Environment,<br />

Ministry of Transport,<br />

Singapore, gracing<br />

the <strong>Water</strong> Expo at<br />

SIWW<strong>2022</strong><br />

Wide-ranging strategic partnerships,<br />

initiatives and memorandum of<br />

understanding (MoU) were announced<br />

at the Singapore International <strong>Water</strong><br />

Week (SIWW) <strong>2022</strong>, organised by<br />

PUB, Singapore’s national water<br />

agency. These announcements are<br />

expected to contribute to the region’s<br />

climate resilience, underscoring the<br />

strategic role SIWW plays in facilitating<br />

Held between 17-21 Apr <strong>2022</strong>, SIWW<br />

hosted physical attendees comprising<br />

leaders in government, industry and<br />

academia from around the world, who<br />

came together to advance international<br />

collaboration to accelerate climate<br />

action.<br />

Against the backdrop of the 2021<br />

United Nations Climate Change<br />

Excellence for Sustainability, which<br />

will consolidate the services of 130<br />

environment businesses under RSK<br />

to provide solutions for industry and<br />

businesses, meeting the demand<br />

for sustainability services in the<br />

region.<br />

• MoU signing between Enterprise<br />

Singapore and Manila <strong>Water</strong>, as<br />

well as PUB and Rwanda <strong>Water</strong> &<br />

Sanitation Corporation to promote<br />

industry collaboration to address the<br />

Conference (COP26) and the<br />

the exchange of best practices,<br />

challenges of climate change.<br />

recent Intergovernmental Panel<br />

test-bedding and deployment of<br />

60 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>


1 2 3<br />

technologies to enhance water<br />

resilience.<br />

• MoU signings between the<br />

Singapore <strong>Water</strong> Association (SWA)<br />

and a series of public and private<br />

organisations to foster partnerships<br />

and deepen knowledge exchange.<br />

These include British <strong>Water</strong>,<br />

International <strong>Water</strong> Association<br />

(IWA) and International <strong>Water</strong> Hub<br />

(IWH).<br />

• Supply deals for the upcoming Tuas<br />

<strong>Water</strong> Reclamation Plant (TWRP)<br />

between Koh Brothers with Meiden<br />

and Xylem to provide ceramic<br />

membrane bioreactor (MBR)<br />

technology and biological aeration<br />

diffuser systems respectively. The<br />

deals are part of the S$200.7 million<br />

contract awarded by PUB for the<br />

TWRP announced previously.<br />

• MoU signings between ZWEEC<br />

Analytics, IONI <strong>Water</strong> and partners<br />

from China and India totalling about<br />

$75 million to provide access to<br />

safe drinking water in the region<br />

and water ecological environment<br />

monitoring in the Yangtze River<br />

Basin.<br />

The Environment & <strong>Water</strong> Leaders<br />

Forum (EWLF), a combined SIWW-<br />

CESG (CleanEnviro Summit Singapore)<br />

high-level forum, shone the spotlight<br />

on how cities and organisations can<br />

transform sustainability challenges<br />

into opportunities as the industry<br />

works towards a climate-resilient<br />

future. Speakers included Mariam<br />

bint Mohanned Almheiri, Minister of<br />

Climate Change and Environment,<br />

Ministry of Climate Change and<br />

Environment, UAE; Michèle Blom,<br />

Vice Minister for <strong>Water</strong> Management,<br />

Ministry of Infrastructure and <strong>Water</strong><br />

Management, Netherlands; Els<br />

van Doesburg, Vice <strong>May</strong>or, City of<br />

Antwerp, Belgium; Patrick Blethon,<br />

CEO of Saur Group; Dechen Tsering,<br />

regional director and representative<br />

for <strong>Asia</strong> and the Pacific, United<br />

Nations Environment Programme;<br />

and Li Guoying, Minister of <strong>Water</strong><br />

Resources, Ministry of <strong>Water</strong><br />

Resources, People’s Republic of<br />

China.<br />

The message from leaders who<br />

spoke during the week is clear—that<br />

urgent action is required to mitigate<br />

and adapt to climate change.<br />

“We don’t have decades for<br />

something that is put into a legally<br />

binding instrument to roll down to<br />

society,” United Nations Environment<br />

Programme’s Tsering said. “These<br />

amazing innovations, technologies<br />

and finance—it’s not happening fast<br />

enough and we don’t have enough<br />

time.”<br />

Saur Group’s Blethon, said on a<br />

positive note: “I couldn’t imagine<br />

such a meeting 15 years ago talking<br />

about water and environment. This is<br />

a big change we are seeing today in<br />

the world, and especially in the past<br />

five years; everyone is talking and<br />

acting. The world is changing.”<br />

The <strong>Water</strong> Expo at SIWW and<br />

Environment Expo at CESG featured<br />

more than 300 local and international<br />

exhibitors, showcasing the latest<br />

innovations in water and environmental<br />

management, with digital solutions<br />

emerging as capable levers for change.<br />

About 30% of the exhibitors at the<br />

Environment Expo featured digital<br />

solutions, with robotics solutions<br />

commonplace. The <strong>Water</strong> Expo also<br />

featured a dedicated Digital Pavilion for<br />

the first time. In addition, the Imagine<br />

H2O and Ripple2Wave Pavilions also<br />

provided opportunities for some<br />

27 water start-ups to connect with<br />

investors, partners and buyers to<br />

advance the commercialisation of<br />

existing and new water technologies.<br />

Ryan Yuen, managing director of<br />

Singapore International <strong>Water</strong> Week,<br />

commented: “SIWW<strong>2022</strong> is proud<br />

to have returned as <strong>Asia</strong>’s first largescale<br />

water show since the pandemic,<br />

bringing together the world’s brightest<br />

minds to conduct meaningful<br />

conversations and developments<br />

to galvanise the international water<br />

community into accelerating climate<br />

mitigation and adaptation efforts. The<br />

active participation of international<br />

businesses at the <strong>Water</strong> Expo further<br />

underscores the importance of SIWW<br />

as a platform for the co-creation of<br />

innovative and scalable solutions for<br />

urban water challenges.”<br />

The next editions of SIWW and CESG<br />

will return from 16-20 Jun 2024.<br />

1 The contract<br />

between Meiden<br />

Singapore and<br />

Koh Brothers<br />

will see the<br />

former providing<br />

ceramic<br />

membranes for<br />

the upcoming<br />

TWRP<br />

2 RSK Group<br />

launches Centre<br />

for Sustainability<br />

Excellence in<br />

Singapore<br />

3 Professor Kazuo<br />

Yamamoto,<br />

Lee Kuan Yew<br />

<strong>Water</strong> Prize<br />

2020 laureate,<br />

delivers a<br />

keynote lecture<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 61


Prof Yamamoto said: “It is a great privilege<br />

to be bestowed the distinguished Lee<br />

Kuan Yew <strong>Water</strong> Prize. This award<br />

nurtures the spearheading soul and<br />

innovative outlook needed to inspire future<br />

generations of water leaders to preserve<br />

and continue our objective of benefitting<br />

communities around the world in the areas<br />

of sanitation and water reuse.”<br />

(From left to right) Senior Minister Teo Chee Hean, Prize Council Chairman; Professor Kazuo Yamamoto, Lee Kuan<br />

Yew <strong>Water</strong> Prize 2020 laureate; Halimah Yacob, President of the Republic of Singapore; and Professor Leo Tan,<br />

board member of Temasek Foundation (Photo credit: SIWW<strong>2022</strong>)<br />



YEW WATER PRIZE 2020<br />

for pioneering solutions<br />

in advanced used water<br />

treatment<br />

Japanese Professor Kazuo Yamamoto’s pioneering<br />

invention of the world’s first operationally and<br />

commercially viable submerged membrane<br />

bioreactor benefitted millions worldwide.<br />

When Prof Kazuo Yamamoto first shared<br />

his idea of submerging membranes in used<br />

water to improve the efficiency and quality<br />

of used water treatment in the mid-1980s,<br />

it was met with much scepticism from the<br />

membrane community as it went against<br />

the conventional scientific thinking of the<br />

time.<br />

Not one to concede defeat easily, Prof<br />

Yamamoto held fast to his convictions and<br />

preserved his research to successfully<br />

develop the world’s first operationally<br />

viable submerged membrane bioreactor<br />

(MBR) prototype in 1988. For his pioneering<br />

invention that has since benefitted millions<br />

worldwide with enhanced public health and<br />

water security, 67-year-old Prof Yamamoto<br />

was awarded the Lee Kuan Yew <strong>Water</strong> Prize<br />

2020.<br />

The Lee Kuan Yew <strong>Water</strong> Prize, sponsored<br />

by Temasek Foundation, awards the winning<br />

recipient with a S$300,000 cash prize, a<br />

certificate and a gold medallion. They were<br />

presented to Prof Yamamoto by Singapore<br />

President Halimah Yacob at an award<br />

ceremony.<br />

Prof Yamamoto is the ninth recipient<br />

of this award. He is currently Emeritus<br />

Professor at the University of Tokyo and<br />

an audit and supervisory board member<br />

of IDEA consultants, an environmental and<br />

infrastructure consultancy firm based in<br />

Tokyo, Japan.<br />

Beyond his invention, Prof Yamamoto<br />

has also advised on national used<br />

water treatment projects around the<br />

world since 2007, such as a lowenergy<br />

demo used water treatment<br />

plant (WWTP) for industrial used water<br />

reuse in Saudi Arabia and Myanmar’s<br />

first MBR-based WWTP. In 2011, he<br />

chaired the Sewage Technical Meeting<br />

on Membrane Technology to develop<br />

guidelines for introducing membrane<br />

technology in sewage works.<br />

Today, submerged MBR technology is<br />

recognised as an effective technology<br />

to achieve effluent quality standards<br />

beneficial for water reuse, which also<br />

reduces the environmental impact of<br />

used water discharge. The technology<br />

has paved way for governments and<br />

water solutions providers across the<br />

world to develop higher standards<br />

of public health. It has reduced the<br />

impact of used water discharges to<br />

the environment and enabled savings<br />

on infrastructural costs, facilitated by<br />

shorter outfall pipelines, due to the<br />

effluent suited for potable reuse. It is also<br />

a sustainable treatment option for fastgrowing<br />

communities due to the speed<br />

and ability of it bring retrofitted into<br />

existing plants.<br />

62 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>



<strong>2022</strong> AND 2023<br />

<strong>2022</strong><br />

AUGUST<br />

4 – 6 Aug<br />

Lanka<strong>Water</strong><br />

Colombo, Sri Lanka<br />


8 – 10 Sep<br />

Danang<strong>Water</strong><br />

Da Nang, Vietnam<br />

14 – 16 Sep<br />

Thai<strong>Water</strong><br />

Bangkok, Thailand<br />

14 – 16 Sep<br />

Pumps & Valves <strong>Asia</strong><br />

Bangkok, Thailand<br />


20 – 22 Oct<br />

Lao<strong>Water</strong><br />

Vientiane, Laos<br />


3 – 5 Nov<br />

Myan<strong>Water</strong> <strong>2022</strong><br />

Yangon, Myanmar<br />

3 – 5 Nov<br />

Pump+Valve Myanmar<br />

Yangon, Myanmar<br />

16 – 18 Nov<br />

Cam<strong>Water</strong> <strong>2022</strong><br />

Phnom Penh, Cambodia<br />


7 – 9 Dec<br />

<strong>Asia</strong> <strong>Water</strong> <strong>2022</strong><br />

Kuala Lumpur, Malaysia<br />

2023<br />


16 – 18 Jan<br />

<strong>Water</strong> Future Energy Summit<br />

Abu Dhabi, UAE<br />


1 – 3 Feb<br />

Inter Aqua<br />

Tokyo, Japan<br />

20 – 22 Feb<br />

World <strong>Water</strong><br />

– Tech Innovation Summit<br />

London, UK<br />

*Due to the COVID-19 pandemic which has resulted in<br />

closed borders and travel restrictions, please check the<br />

events’ websites for the latest updates and changes.<br />

WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong> 63




PAGE<br />

DUPONT 1<br />






OBC<br />


IFC<br />


IBC<br />

VAUGHAN CO., INC 3<br />



@waterwastewaterasia<br />

64 WATER & WASTEWATER ASIA | MAY/JUNE <strong>2022</strong>

W: www.PWNT.com<br />

W: www.PWNT.com<br />

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Suspended Ion Exchange<br />

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‣ No iron or aluminium based sludge<br />

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‣ Compatibility with a variety of commercially-available<br />

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Resin low additional is recycled resin with is low needed resin over attrition time and loss, thus<br />

low additional resin is needed over time<br />

‣ Short resin contact times, implying no risk of resin<br />

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blinding and biofouling<br />

‣ Full-scale resin service life > five years<br />

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‣ Other anions, such as sulfate and nitrate, are also<br />

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info@PWNT.com<br />

info@PWNT.com<br />

visit<br />

www.PWNT.com<br />

visit<br />

www.PWNT.com<br />

SINGAPORE 1 Kim Seng Promenade, #16-03 Great World City East Tower Singapore 237994 | T: +65 6735 6890<br />

SINGAPORE 1 Kim Seng Promenade, #16-03 Great World City East Tower Singapore 237994 | T: +65 6735 6890<br />

THE NETHERLANDS Rijksweg 501, 1991 AS Velserbroek, The Netherlands | T:+31 23 541 3740<br />

THE NETHERLANDS Rijksweg 501, 1991 AS Velserbroek, The Netherlands | T:+31 23 541 3740

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