Water & Wastewater Asia March/April 2023

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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MARCH / APRIL <strong>2023</strong><br />

www.waterwastewaterasia.com<br />

Furthering the<br />

revolution already<br />

underway in water:<br />

Interview with COO of<br />

Gradiant<br />

PHANTOR 6000: A<br />

mobile solution to boost<br />

drinking water supply in<br />

South East <strong>Asia</strong><br />

SUEZ’s new<br />

sustainability goals



<strong>2023</strong><br />

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08<br />

13<br />


04 Editor’s Note<br />

06 News<br />

53 SWA Newsletter<br />

63 What’s Next?<br />

64 Advertisers’ Index<br />


10 Hydroleap: Next-generation<br />

wastewater treatment<br />


13 Yesterday and tomorrow: Binnies’<br />

biggest contribution to Singapore’s<br />

water story<br />

15 Singapore’s water strategy facing<br />

climate change<br />

17 Binnies applying expertise beyond<br />

borders<br />

18 “Too much water, and not enough<br />

of it”: Groundfos’ strategy to the<br />

global water crisis<br />

22 Enhancing water solutions in the<br />

Middle East<br />

24 “Furthering the revolution already<br />

underway in water”: Gradiant<br />

against water scarcity<br />


26 Maynilad <strong>Water</strong>: A tale of NRW<br />

reduction in metro Manila<br />

2 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


62<br />

32<br />

28 How differential pressure flow meters<br />

help water and wastewater treatment<br />

30 Selective ion exchange process for<br />

removing PFAS compounds<br />

32 Plasma oxidation as a way of efficiently<br />

removing ethoxylates from wastewater<br />

34 Calculating the true cost of sewer<br />

ingress<br />

FOCUS<br />

36 PHANTOR 6000: A mobile solution to<br />

boost drinking water supply in South<br />

East <strong>Asia</strong><br />

38 CeraMac: a ceramic microfiltration<br />

system to improve water quality<br />

40 <strong>Water</strong> sector recognised for NIST<br />

framework implementation progress<br />

42 Reducing non-revenue water with<br />

modern pressure regulating valves<br />


46 NX Filtration receives follow-on orders<br />

for large-scale drinking water projects<br />

in Indonesia<br />

48 Maltese Island achieves water<br />

autonomy with SWRO innovation<br />

50 SUEZ’s new sustainability goals<br />

52 Tsurumi AVANT: Submersible<br />

pumps and wastewater<br />

treatment equipment<br />


57 IZAR RDC Motion makes touring<br />

easy<br />

58 New in-line pumps for building<br />

services applications<br />

59 Emerson’s non-contacting radar<br />

transmitters improve efficiency<br />

in water utility applications<br />

60 Ovarro launches fully managed<br />

fixed network leakage service<br />


62 Overcoming global industry<br />

challenges: <strong>Water</strong> Philippines<br />

<strong>2023</strong><br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 3




William Pang • Publisher<br />

williampang@pabloasia.com<br />

There is no panacea for all the water crises<br />

of today. But the takeaway is this: a water<br />

revolution is already underway.<br />

Our conversations with water experts reveal<br />

climate change tops the water crises pyramid,<br />

as it takes precedence over other familiar<br />

challenges in the industry, such as shrinking<br />

freshwater supplies and ageing networks.<br />

Climate change challenges transcend borders<br />

as nations worldwide face the same crisis.<br />

And this insight reveals that solutions can be<br />

applied anywhere, across the globe as water<br />

expertise are encouraged to apply beyond<br />

borders (p. 17). Take the Middle East water<br />

challenges for example: Desalination methods<br />

used at IDE Technologies are applied in China<br />

and the US. According to its country manager,<br />

MENA, IDE’s innovation in brine minimisation<br />

meets the needs of multiple industrial markets<br />

globally, revolutionising water plant recovery<br />

rates with such a technique (p. 23).<br />

But to combat climate change, innovation<br />

alone is not enough. On our radar, a fully<br />

managed fixed network leakage service has<br />

sped up leak detection process in the UK with<br />

its own data analysis alert (p. 60). Further,<br />

multifaceted solutions take the revolution<br />

further as seen in the PHANTOR 6000, which<br />

uses regenerated electricity to produce water<br />

out of humidity, an innovation best suited for<br />

South East <strong>Asia</strong>’s climate (p. 36). Learning<br />

from history, Binnies — the company that has<br />

contributed to Singapore’s 100 years of water<br />

excellence — revealed that water strategies<br />

need not change radically as they have<br />

always been prioritised here. Instead, they<br />

must be maintained through a new lens<br />

of climate adaptation, which is the way<br />

forward (p. 15).<br />

As more turn to water circularity to<br />

reduce water footprint, advancing<br />

technology such as artificial intelligence<br />

(AI) has taken precedence already.<br />

But the sector now has to adopt and<br />

implement new frameworks and industry<br />

standards. Improving critical infrastructure<br />

cybersecurity with a standard framework,<br />

according to Claroty’s regional vicepresident,<br />

is the next important step in the<br />

water revolution (p. 40).<br />

Moving forward, finding ways to a new,<br />

more responsible paradigm of water<br />

use through water recycling operations,<br />

new technology and advanced water<br />

purification techniques are all collectively<br />

furthering the revolution already underway<br />

in water, as Singapore’s homegrown global<br />

solutions provider Gradiant puts it (p. 24).<br />

Amira Yunos<br />

Assistant Editor<br />

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@waterwastewaterasia<br />

<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 | MARCH/APRIL <strong>2023</strong>

NEWS<br />



which is why we have been called upon<br />

multiple times by organisations like the CDC,<br />

the Government of Canada and private<br />

companies around the world to deliver this<br />

surveillance testing.”<br />

The on-site laboratory at Pearson is<br />

equipped to run all required steps to<br />

process the polymerase chain reaction<br />

(PCR) test for the specific targets, resulting<br />

in a rapid turnaround time from sample to<br />

result. LuminUltra has provided all required<br />

components and staffing, including auto<br />

extraction units and high-throughput PCR<br />

devices, and has developed the assays<br />

that test for the specific targets: omicron<br />

sub-variants and monkeypox. The company<br />

is also able to add assays for more targets if<br />

needed.<br />

Pearson International Airport is one of the busiest airports in North America<br />

LuminUltra has partnered with the Greater support public health officials in making<br />

Toronto Airports Authority (GTAA) to<br />

smarter, more timely decisions.”<br />

implement an on-site laboratory to perform<br />

wastewater surveillance testing at Pearson Testing effluent for the presence of specific<br />

International Airport. This pilot project, viruses or pathogens has become a<br />

supported in part by funding from the National common, non-invasive method for measuring<br />

Research Council of Canada industrial community health trends that has been used<br />

research assistance programme (NRC IRAP), throughout the pandemic. Earlier in 2022,<br />

is using LuminUltra’s technology to test for the LuminUltra delivered on a contract with<br />

presence of sub-variants of the SARS-CoV-2 the US Centres of Disease Control (CDC)<br />

omicron virus and monkeypox in wastewater to process samples from across the US as<br />

effluent from planes and airport terminals. part of its National <strong>Wastewater</strong> Surveillance<br />

System (NWSS).<br />

“This project aims to demonstrate that<br />

wastewater surveillance testing is an important “<strong>Wastewater</strong> is a very complicated sample<br />

tool for keeping travel open and available to type, which makes testing it very different<br />

Canadians,” said Dwayne Macintosh, director than the clinical testing of individuals using<br />

of GTAA safety and security.<br />

nasal or throat swabs,” said Pat Whalen,<br />

chairman and CEO of LuminUltra.<br />

“As Canada’s largest airport, Toronto Pearson<br />

is leading the industry in exploring trials “Our company has decades-long history of<br />

that leverage testing technology like this to working with difficult sample types, ranging<br />

help understand how data from airports can from wastewater to oil and gas sludges,<br />

“We have developed an agile process for<br />

developing new assays,” said Anda Quintero,<br />

laboratory scientific director at LuminUltra.<br />

“Our customers have relied on us to be<br />

able to respond quickly to newly emerging<br />

variants, which helps them ensure they are<br />

looking at the complete picture.”<br />

LuminUltra delivers molecular testing<br />

solutions in a range of applications including<br />

biofouling, bioprocessing and biosecurity<br />

through both service and product offerings.<br />

Whalen concluded: “We understand the<br />

risks that microbial activity, including<br />

viruses and pathogens, can pose. We have<br />

a portfolio of products and services that<br />

identify this activity across many sample<br />

types, volumes and testing targets. In this<br />

case, we have implemented some of our<br />

largest scale solutions to be able to meet<br />

the needs of Canada’s largest airport and<br />

enable people to work, live and play with<br />

confidence.”<br />

6 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>

NEWS<br />



Singapore-based UnaBiz will<br />

provide smart water metering with<br />

French water company<br />

French water company Sogedo has<br />

partnered with IoT solutions provider<br />

UnaBiz to use its Sigfox network<br />

to enhance its water conservation<br />

efforts and manage the water<br />

consumption in France.<br />

Smart meter solutions that monitor<br />

water consumption will be deployed<br />

by UnaBiz to support Sogedo.<br />

These are powered by technology<br />

of French wireless company<br />

Sigfox, which UnaBiz acquired<br />

for a reported €25m in 2022. Its<br />

low-power wide-area (LPWA) ‘0G’<br />

technology include smart meters,<br />

water consumption sensors,<br />

pressure sensors, and condition<br />

monitoring sensors.<br />

Since <strong>March</strong> 2016, over 22,000<br />

water metering solution devices<br />

were deployed by Sogedo. A<br />

1,000 alerts have been recorded,<br />

detecting over 500 leaks in its<br />

customer base. This has helped<br />

save over 90,000m 3 of water<br />

throughout its water distribution<br />

network, an equivalent of 30<br />

Olympic-sized swimming pools,<br />

according to the company.<br />

Julien Siffert, expert for remote<br />

control solutions at Sogedo, said:<br />

“The combination of Sogedo’s<br />

expertise in water and UnaBiz’s<br />

know-how in communication<br />

technologies bring better<br />

operations, time-savings, and the<br />

better management of precious<br />

water resources for the benefit of<br />

the community.”<br />

Source: Data Center Dynamics<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 7

NEWS<br />



To better serve municipal and industrial<br />

customers, US chemicals company DuPont is<br />

consolidating and rebranding its portfolio of<br />

ultrafiltration (UF) membranes for sustainable<br />

purification, conservation, and reuse of water.<br />

The DuPont IntegraTec portfolio of UF<br />

technologies and products consolidates<br />

brands — from Inge, Memcor, and DuPont<br />

UF — into a singular portfolio available to<br />

customers.<br />

This offering reportedly makes it easier for<br />

its customers to benefit from the best-fit UF<br />

technology, either to be used alone or as part<br />

of a multi-technology water treatment solution,<br />

towards goals of high-filtration performance,<br />

high recovery, and energy savings.<br />

With a global network of UF specialists,<br />

DuPont’s team can help customers navigate<br />

the IntegraTec portfolio to tailor scalable,<br />

sustainable water and wastewater filtration<br />

solutions for industrial, municipal, and<br />

commercial applications.<br />

Alan Chan, its global vice-president and general<br />

manager said: “DuPont will help customers<br />

leverage the wider IntegraTec portfolio to meet<br />

goals to increase access to high-quality water<br />

through more energy-efficient and circular<br />

processes.”<br />

This set of technologies in use at more than<br />

3,000 installations around the world produce<br />

a combined 50 million m 3 of water every day.<br />

With more than 90 years of experience in<br />

UF technologies, IntegraTec is underpinned<br />

by more than 200 patents and a network of<br />

technical support professionals and labs that<br />

can assist with the delivery of tailored solutions<br />

for customers.<br />

Polyvinylidene fluoride (PVDF),<br />

polyethersulfone (PES) and polypropylene<br />

(PP) membrane chemistries are available,<br />

and modules can be configured in either a<br />

pressurised or submerged configuration.<br />

Integrated UF options are also available that<br />

combine the screening and UF stages within<br />

a single compact vessel to reduce the plant<br />

footprint and enhance the robustness of the<br />

solution.<br />

In January 2020, DuPont completed the<br />

acquisitions of Inge and Memcor, which<br />

brought together three distinct sets of UF<br />

technologies to meet customers’ current and<br />

future challenges, including the increased<br />

need to recycle water while reducing energy<br />

requirements to generate clean water.<br />

UF membrane barriers exclude particles<br />

0.02-0.05 microns, including bacteria, viruses,<br />

and colloids, meeting increasingly stringent<br />

water-quality standards around the world.<br />

When used alone, UF does not require the<br />

use of pre-treatment chemicals or associated<br />

costs for sludge disposal. When used as a<br />

pre-treatment for reverse osmosis (RO), UF<br />

reduces RO membrane fouling, lowering<br />

chemical usage and operating costs.<br />


US manufacturing company Solenis has<br />

earned platinum for another consecutive<br />

year and remains among the top 1% of<br />

performers evaluated in the chemical<br />

industry category.<br />

It was recognised for its corporate social<br />

responsibility (CSR) performance from<br />

EcoVadis, a collaborative platform providing<br />

sustainability ratings and performance<br />

improvement tools for global supply chains.<br />

Dr Daniel Grell, chief safety, regulatory and<br />

quality officer at Solenis, said: “It becomes<br />

more difficult to maintain, with additional<br />

questions to answer and criteria to meet. All<br />

companies are striving to improve year after<br />

year, so it gets increasingly harder to be<br />

part of the 1%.<br />

“This is a reflection of the work of 6,500<br />

people in 120 countries.”<br />

Solenis’ CEO, John Panichella, said that<br />

meeting its sustainability goals and helping<br />

its customers to do the same are a top daily<br />

priority, along with safety.<br />

As a global producer of specialty chemicals<br />

for water-intensive industries, the company<br />

remains among the top 1% of performers<br />

evaluated by EcoVadis in the chemical<br />

industry category. Prior to achieving platinum<br />

status in 2022, it had been awarded gold level<br />

evaluation status twice.<br />

The EcoVadis methodology is built on<br />

international CSR standards, including the<br />

Global Reporting Initiative, the UN Global<br />

Compact and ISO 26000, covering 200<br />

purchasing categories, 175 countries and<br />

21 CSR issues grouped in four themes:<br />

environmental, labour and human rights,<br />

ethics, and sustainable procurement.<br />

8 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>

NEWS<br />



Indonesia will focus on six key issues<br />

for the 10th World <strong>Water</strong> Forum (WWF),<br />

jointly organised by international think<br />

tank World <strong>Water</strong> Council and Indonesia.<br />

It is set to take place from 18-24 May<br />

2024 in Bali. Speaking at the WWF kickoff<br />

meeting in Jakarta, vice-chairman of<br />

the WWF national organising committee,<br />

Basuki Hadimuljono, framed the agenda<br />

which will guide discussions over the<br />

next 15 months.<br />

Hadimuljono, who also serves as<br />

Minister of Public Works and Public<br />

Housing (PUPR), said that the major<br />

water resource problems were water<br />

for humans and nature, water security<br />

and prosperity, disaster risk reduction<br />

and management, cooperation and<br />

hydro-diplomacy, water and innovative<br />

finance, as well as knowledge and<br />

innovation.<br />

Measured discussion of these issues<br />

will be conducted through political,<br />

thematic, and regional processes,<br />

necessitating deliberation to<br />

find solutions, innovation, and<br />

implementation of action plans. The<br />

Indonesian government will promote<br />

the WWF agenda at the UN <strong>Water</strong><br />

Conference in New York City from<br />

22-24 <strong>March</strong> <strong>2023</strong>.<br />

President Joko Widodo (Jokowi)<br />

stated his expectation that<br />

the 10th WWF yield concrete<br />

recommendations on overcoming the<br />

global water crisis: “These agendas<br />

must be addressed as joint efforts,<br />

through community participation and<br />

support from various stakeholders,<br />

as well as dialogue and partnerships<br />

between countries in the spirit of<br />

togetherness for the welfare of the<br />

global community.”<br />

The president of World <strong>Water</strong><br />

Council, Loic Fauchon said:<br />

“Together, while coordinating<br />

implementation of the 10th WWF, we<br />

will strive to provide new solutions,<br />

which will help to increase the access<br />

to water for billions of people.”<br />

As a cross-border event that<br />

discusses water resources issues,<br />

WWF serves as a forum for sharing<br />

experiences and innovations to<br />

respond to global water management<br />

challenges. Indonesia has formed<br />

the national organising committee<br />

for the 10th WWF, comprising<br />

various ministries and supported<br />

by specialists and professors in the<br />

field of water-related issues from<br />

Indonesian universities.<br />

The kick-off meeting which was also<br />

the first stakeholders meeting was<br />

attended by 1,300 delegates from<br />

56 countries. It aimed to provide<br />

information to mobilise stakeholders<br />

in the WWF process until the forum<br />

launches next year. The event will<br />

continue with regular pre-summit<br />

discussions and workshops to set the<br />

stage for the 10th WWF.<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 9



Next-generation<br />

wastewater treatment<br />

Hydroleap, a Singapore-based innovative company<br />

with patented electrochemical technology, creates<br />

solutions for water and wastewater treatment that<br />

aim to displace conventional processes to spur<br />

sustainable, operational and financial benefits.<br />

effluents from F&B processing plants<br />

are associated with characteristics<br />

such as high concentration of total<br />

suspended solids (TSS), chemical<br />

oxidation demand (COD), biological<br />

oxidation demand (BOD), and fats,<br />

oils, and grease (FOG). It also has<br />

pathogenic organisms and traces<br />

of pesticides, as well as nutrients<br />

consisting of ammonia, phosphorus<br />

and nitrogen.<br />

These characteristics present<br />

conundrums for facilities that harness<br />

traditional methods such as dissolved air<br />

filtration (DAF) and biological processes<br />

for wastewater treatment, as they<br />

may not be able to contain the high<br />

contaminant loads that pose a threat to<br />

human life and the environment.<br />

Fig. 1: Installed EC<br />

reactor in F&B-based<br />

company<br />

Hydroleap’s first core technology,<br />

electrocoagulation (HL-EC) is a<br />

process known for its efficacy in<br />

removing impurities from a range of<br />

industrial effluents. These include<br />

heavy metals, suspended particles,<br />

organic compounds and dyes. The<br />

simple nature of the EC process<br />

utilises easily operated equipment that<br />

entail a shortened reactive retention<br />

time compared to orthodox biological<br />

processes.<br />

The application of EC, however, on<br />

a large scale has been hindered by<br />

issues of high-power consumption<br />

and passivation. To overcome this,<br />

Hydroleap coupled smart automation<br />

processes with optimised variables to<br />

develop a robust, modular system.<br />

This has enabled the group to attain<br />

up to 60% savings in operating<br />

expense, 50% space utilisation,<br />

95% reduction in operating<br />

manhours, 30-50% reduction<br />

in CO2 emission and increased<br />

performance assurance due to<br />

remote monitoring system.<br />

CASE STUDY 1: F&B<br />


The food and beverage (F&B)<br />

industry is a water resourceintensive<br />

sector. From being an<br />

ingredient in condiments to being<br />

used to facilitate daily equipment<br />

cleanings, water is a valuable<br />

resource. Typically, wastewater<br />

One of Hydroleap’s customer expressed<br />

issues of their treatment plant, which<br />

were based on conventional treatment<br />

processes: DAF, anaerobic and aerobic<br />

processes. The challenges were<br />

high operating costs, unsustainable<br />

ecological footprints, and poor effluent<br />

water quality, whose parameters were<br />

5-7 pH, 2,000-4,000mg/l of COD,<br />

200-3,000mg/l of BOD, 1,000-3,000mg/l<br />

of TSS, and 10-500mg/l of FOG. While<br />

COD and BOD could be removed<br />

biologically, they demanded a longer<br />

retention time compared to Hydroleap’s<br />

solutions. Further, the presence of<br />

non-biodegradable organic compounds<br />

also hindered the decolourisation of the<br />

water.<br />

To help resolve the drawbacks,<br />

Hydroleap sought to reduce their water<br />

footprint and lower the environmental<br />

impacts from their wastewater discharge<br />

and solid sludge generation. Hydroleap<br />

concluded that the absence of<br />

anions allowed for sludge production,<br />

which was more compact in the EC<br />

process, compared to that in chemical<br />

coagulation.<br />

10 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


Fig. 2: Influent and effluent water quality after EC and lamella clarifier<br />

Fig. 3: Before (left) and after (right) EC treatment<br />

Hydroleap thus installed a 30m 3 /hr<br />

pre-treatment system along with a<br />

lamella clarifier (Fig. 1) to replace<br />

the existing anaerobic process<br />

and clarifier. This translated to high<br />

removal rates with 68% COD, 70%<br />

BOD, 96% TSS, 95% FOG and 76%<br />

of phosphate (Fig. 2). Visually, the<br />

colour change of the raw wastewater<br />

is evidence of high removal rates<br />

(Fig. 3).<br />

Hydroleap’s system succeeded<br />

the anaerobic process, achieving<br />

lower organic loading and higher<br />

biodegradability to attain discharge<br />

which was within range of acceptable<br />

water quality.<br />

As for its second core technology,<br />

electro-oxidation (HL-EO), this<br />

advanced oxidation process (AOP)<br />

technique focuses on mineralising<br />

organic contaminants, eliminating<br />

or deactivating microorganisms and<br />

mitigating the production of scaling in<br />

water systems. To do so, its EO reactor<br />

utilises direct current to generate<br />

highly reactive oxidative species such<br />

as hydroxyl radical, free chlorine and<br />

sulphate radicals that help break down<br />

recalcitrant species.<br />


WATER<br />

Cooling tower water is used to remove<br />

heat from a process or system, such<br />

as an air conditioning system or a<br />

power plant. They work by circulating<br />

water through a heat exchanger and<br />

then spraying the water into the air to<br />

dissipate heat through evaporation. The<br />

water is then collected at the bottom of<br />

the tower and recirculated back to the<br />

heat exchanger to continue the cooling<br />

process. But due to evaporation in the<br />

cooling tower, the salt concentration<br />

gradually increases. After a set<br />

concentration threshold is reached,<br />

water is discharged as a so-called<br />

cooling ‘blowdown water’ and replaced<br />

with freshwater. However, this same<br />

water can contain various contaminants,<br />

such as algae, bacteria, minerals, and<br />

chemical additives used for treatment<br />

Fig. 4: Schematic of a cooling tower with EO reactor installed<br />

Fig. 5: Schematic of a cooling tower<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 11


and maintenance. As such, it is<br />

common for industrial companies to<br />

adopt some type of cooling tower<br />

water treatment system to ensure<br />

efficiency and long service life. But<br />

if left untreated, the resultant effects<br />

of fouling, scaling, and corrosion<br />

combined can drastically reduce<br />

plant productivity by causing plant<br />

downtime, and henceforth require<br />

costly equipment to replace existing<br />

ones.<br />

Fig. 6: Removal<br />

efficiency of EO<br />

reactor over time<br />

Traditionally, chemical treatments<br />

address the said issues by doing the<br />

following: corrosion by providing a<br />

protective chemical layer, generally<br />

within an alkaline environment;<br />

biological fouling and deposits<br />

through the use of oxidising and<br />

non-oxidising biocides; scale<br />

formation through a combination<br />

of polymers, polyphosphates and<br />

managed cycles of concentration<br />

(COC) within the tower, and;<br />

suspended solids using dispersants<br />

and polymers. As a result of chemical<br />

use laws enforced by local agencies,<br />

stakeholders are re-evaluating<br />

methods to treat their cooling tower<br />

waters to achieve higher water usage<br />

efficiency (WUE) and power usage<br />

efficiency (PUE). This is exacerbated<br />

by the increased chemical and<br />

utility costs, expenses incurred with<br />

training of employees who handle<br />

the chemicals, storage and disposal<br />

of chemicals, and the general<br />

maintenance involved with the use of<br />

chemicals which call for a paradigm<br />

shift towards more sustainable<br />

wastewater treatment solutions.<br />

The HL-EO process removes minerals<br />

and contaminants in the water, while<br />

killing bacteria including legionella and<br />

breaking down calcium build-up to<br />

mitigate scaling. The EO reactor treats<br />

a slipstream, which is pulled off from<br />

the main condenser water loop, flowed<br />

to the EO reactor skid and then fed<br />

back into the cooling tower. The system<br />

includes the reactor skid and the<br />

slipstream circulation pump (Fig. 4). The<br />

removal efficiency of conductivity, total<br />

hardness and total dissolved solids<br />

(TDS) can be improved by increasing<br />

the applied current. This is due to<br />

the higher number of ions produced<br />

on the electrodes, which promote<br />

destabilisation of the monovalent and<br />

divalent molecules present in water.<br />

Fig. 6 illustrates the removal efficiency<br />

of total hardness, conductivity, and TDS<br />

during the pilot run. The simultaneous<br />

production of OH- ions at the cathode<br />

lowers the pH and leads to a high<br />

concentration of bicarbonate ions,<br />

which accelerates the precipitation<br />

of the hard minerals and silica inside<br />

the reactor cathode surface, instead<br />

of on tower surfaces and in the heat<br />

exchanger tubes.<br />

The system activates the chlorides<br />

naturally present in the water,<br />

creating chlorine, which acts as<br />

a biocide. The generation of free<br />

chlorine, which was more than<br />

1mg/L during the period run was<br />

sufficient in quantity for the effective<br />

removal of legionella (Fig. 7).<br />

Overall, the EO was found effective<br />

in removing total hardness,<br />

legionella and other pathogens.<br />

This was likely due to the combined<br />

effect of multiple oxidants<br />

generated in the EO process. This<br />

successful removal also suggests<br />

that the treated water could be<br />

recirculated for more cycles<br />

than before, resulting in a lower<br />

blowdown rate and greater energy<br />

efficiencies. Considering this,<br />

Hydroleap effectively increased<br />

COC by 2.5 times and henceforth<br />

lowered the blowdown rate.<br />

Fig. 7: Removal<br />

of pathogens and<br />

microorganisms<br />

12 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>




Binnies’ biggest contribution<br />

to Singapore’s water story<br />

Binnies, an RSK Group company providing water,<br />

wastewater, and flood resilience solutions, celebrated<br />

its 100th year of water excellence in Singapore on 5 Dec<br />

2022. We spoke to Alan Ryder, the CEO and founder of RSK<br />

Group, about Binnies’ contributions over the past century,<br />

and its prospective projects.<br />

By Amira Yunos<br />


Binnies has helmed projects that<br />

transformed Singapore’s water<br />

landscape. Working closely with the<br />

Singapore government to strategise<br />

the importation of water from Malaysia<br />

in the 1960s, Binnies also worked<br />

with PUB, Singapore’s National <strong>Water</strong><br />

Agency, to develop the four national<br />

taps strategy.<br />

For Ryder, digital water is the<br />

company’s biggest contribution to<br />

Singapore’s water excellence.<br />

From left to right: Alan Ryder, CEO and founder of RSK Group; Her Excellency Kara Owen, British High Commissioner to<br />

Singapore; and Dr Amy Khor, Senior Minister of State for Sustainability and the Environment (Image: Binnies Singapore)<br />

Binnies’ asset management division<br />

specialises in developing technologies<br />

that help improve the efficiencies<br />

of water production and water<br />

conveyance. The application of<br />

digitalisation can provide water utilities<br />

with improved efficiency, enhanced<br />

customer service, and better decisionmaking<br />

based on data and analysis.<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 13


By analysing data on water usage and<br />

customer behaviour, digitalisation<br />

allows utilities to develop targeted<br />

programmes and services to meet the<br />

specific needs of different customer<br />

groups. Better asset management<br />

leads to more sustainable water<br />

infrastructure and minimises nonrevenue<br />

water.<br />

At the crux of it all is making sure that<br />

RSK applies the latest technology to<br />

managing precious water resources,<br />

Ryder said.<br />

“The key thing is we recognise that<br />

technology, the development of<br />

technology, and the application of<br />

technology are going to be crucial<br />

in safeguarding water and providing<br />

NE<strong>Water</strong>.”<br />

Binnies was awarded S$28.8m by<br />

PUB to upgrade the Choa Chu Kang<br />

(CCK) <strong>Water</strong>works, one of Singapore’s<br />

oldest water treatment plants. 1<br />

Equipped with membrane technology<br />

and automation, the facility will<br />

adopt smart technologies and digital<br />

solutions for improved operational<br />

efficiencies and to reduce costs. It<br />

will serve as a showcase project with<br />

the adoption of digitalisation when<br />

completed in 2026.<br />


CHANGE<br />

Among the concerns facing the<br />

water industry in Singapore are how<br />

the country will adapt to the climate<br />

emergency, and how water resilience<br />

will have to be enhanced, prioritised<br />

and changed to accommodate the<br />

changing climate, Ryder added.<br />

It is not about changing water<br />

strategies in Singapore, however,<br />

Ryder said.<br />

“There is no need for a radical change<br />

in strategy because the importance of<br />

water and resilience of water supplies<br />

have been high on the list of priorities<br />

for the government here for decades.<br />

It is about maintaining that focus on<br />

the importance of water but looking<br />

at it through a new lens of climate<br />

adaptation.”<br />


The 2022 UN climate change<br />

conference, COP27, included the<br />

new Action on <strong>Water</strong> Adaptation<br />

or Resilience (AWARe) initiative to<br />

mitigate the water crises caused<br />

by climate change. Ryder said that<br />

despite progress in water efficiency<br />

and resource management, more<br />

needs to be done beyond offering<br />

transitional adaptation solutions.<br />

He said: “To truly mitigate the water<br />

crisis, we believe solutions and<br />

approaches would need to include<br />

Nature-based solutions (NbS).<br />

“The power of NbS lies in its potential<br />

for multifunctionality and regenerative<br />

design: One intervention can have<br />

multiple impacts, benefits, and<br />

investment returns. By implementing<br />

NbS, the initiatives would inherently<br />

work with nature to incorporate natural<br />

systems into design, maintenance,<br />

development and infrastructure<br />

policies and plans. Beyond mitigating<br />

the water crisis, it will deliver widereaching<br />

positive environmental, social<br />

and economic outcomes and gains.”<br />

Its acquisition by the RSK Group<br />

in <strong>March</strong> 2021 enabled the latter to<br />

grow from 8,000 employees to about<br />

11,000 people today. Its presence<br />

in <strong>Asia</strong> leverages the expertise of<br />

over 175 environmental, engineering,<br />

and technical services businesses,<br />

expanding beyond Singapore to<br />

Hong Kong, the Philippines, Vietnam<br />

and mainland China.<br />

“Binnies has delivered world-class<br />

infrastructure for some of the<br />

biggest projects of their kind in the<br />

world. So, for Binnies to be leading<br />

that engineering, it is as iconic<br />

today as it was 100 years ago,”<br />

Ryder said.<br />

Reference<br />

1 CNA. Choa Chua Kang waterworks to undergo<br />

major reconstruction; S$29 million tender awarded<br />

<br />

2 NLB. Singapore’s water supply<br />

<br />

“How RSK and the government of<br />

Singapore [will] collaborate in the<br />

future [is] very much focused on<br />

climate change and adaptation to<br />

climate change.”<br />


Since the 1890s, Binnies, established<br />

by British civil engineer Sir Alexander<br />

Binnie, 2 has been developing<br />

Singapore’s water reliance and supply.<br />

Alan Ryder, CEO<br />

and founder of<br />

RSK Group (Image:<br />

Binnies Singapore)<br />

14 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>



water strategy facing<br />

climate change<br />

Dr Amy Khor, Senior Minister of State for Sustainability<br />

and the Environment, discusses lessons from Singapore<br />

in balancing water security and sustainable development<br />

in the face of climate change.<br />

By Amira Yunos<br />

Today, the nation’s pursuit of water<br />

excellence goes beyond the supply<br />

of water. Rather, water businesses<br />

now need to be sustainable in their<br />

processes to reduce Singapore’s<br />

greenhouse gas emissions and the<br />

effects of climate change.<br />

Singapore launched the Singapore<br />

Green Plan 2030 as a whole-of-nation<br />

roadmap to achieving sustainable<br />

development. Most recently, at the<br />

UN Climate Change Conference, or<br />

COP27, Singapore strengthened its<br />

commitment for a net-zero 2050. As<br />

an alternative-energy disadvantaged<br />

nation, aligning Singapore’s<br />

international commitments with<br />

its domestic water needs will be<br />

challenging.<br />

“Not resting on its laurels, the water<br />

industry at large must now enhance<br />

its water security while reducing<br />

energy intake and carbon footprint,”<br />

said Dr Khor.<br />

She added that besides the<br />

deployment of solutions to reduce,<br />

reuse and remove carbon, such as<br />

reducing water demand or being<br />

more energy-efficient in water<br />

production, industry associations<br />

too have a part to play. The<br />

Singapore <strong>Water</strong> Association (SWA),<br />

for example, which represents<br />

over 300 members in the water<br />

sector, must elevate the awareness<br />

of business opportunities in the<br />

sustainability sector and tap on<br />

upskilling programmes to advance<br />

the sustainability agenda.<br />

Climate change impacts are<br />

projected to result in more frequent<br />

and prolonged droughts, and intense<br />

rainfall will also threaten Singapore’s<br />

water supply. In this regard, PUB,<br />

Singapore’s National <strong>Water</strong> Agency,<br />

as the appointed national coastal<br />

protection agency, has commenced<br />

site-specific studies to look at<br />

possible protection measures for the<br />

nation’s coastlines.<br />

One such study was to explore<br />

the feasibility of underground<br />

stormwater conveyance and storage<br />

systems to mitigate the impact of<br />

rainfall-induced floods. Undertaken<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 15


by Binnies, the study involved<br />

the development of a conceptual<br />

design for a mega stormwater<br />

conveyance and storage system<br />

(UDRS) to maximise space usage.<br />

“Climate change adaptation is a<br />

new area which presents many<br />

opportunities for Singapore’s water<br />

industry,” Dr Khor added. “With its<br />

expertise in flood management and<br />

coastal protection, Binnies can play<br />

a key role in the development of<br />

solutions through collaboration with<br />

local institutes of higher learning<br />

and the water industry.”<br />

To facilitate this, at the Singapore<br />

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

(SIWW) last year, Binnies’ parent<br />

company, RSK Group, launched<br />

the RSK Centre for Sustainability<br />

Excellence. The centre, which<br />

consolidates expertise from over<br />

175 environmental businesses<br />

under the RSK Group, provides<br />

practical solutions in digital<br />

water, carbon accounting,<br />

renewable energy, and sustainable<br />

agriculture. This aims to strengthen<br />

collaboration opportunities<br />

within the industry towards lower<br />

carbon footprint and greater water<br />

resilience.<br />

02<br />

1970s<br />

Binnies engineered the<br />

Upper Pierce Scheme<br />

04<br />

01<br />

1920s<br />

Binnies commissioned<br />

to work on the Gunung<br />

Pulai Dam in Johor<br />

which delivered water<br />

to Singapore<br />

03<br />

2000s<br />

Binnies helped<br />

design Singapore’s<br />

first large-scale<br />

desalination plant,<br />

SingSpring<br />

05<br />



Singapore and Binnies have a longstanding<br />

partnership dating back<br />

to the early 1900s, when Binnies<br />

played a part in laying down the<br />

foundations for the nation’s water<br />

and wastewater infrastructure.<br />

2013<br />

Binnies engineered<br />

the Tuas South<br />

Desalination Plant<br />

(formerly Tuaspring<br />

Desalination Plant)<br />

2020<br />

Binnies engineered the<br />

Keppel Marina East<br />

Desalination Plant<br />

which has the ability to<br />

treat either seawater or<br />

freshwater<br />

As a partner to PUB for years,<br />

Binnies has had a hand in many<br />

critical infrastructural projects that<br />

provided clean water and sanitation<br />

in Singapore’s early nation building<br />

efforts, according to Dr Khor.<br />

The timeline shows some of Binnies contributions to Singapore’s water history<br />

16 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>



applying expertise<br />

beyond borders<br />

Her Excellency (HE) Kara Owen, British High Commissioner to Singapore, shares<br />

Binnies’ impact beyond Singapore borders, the water challenges the UK and<br />

Singapore have in common, and some of the solutions Binnies has to offer.<br />

By Amira Yunos<br />

In terms of water management, flooding<br />

and coastal management are crucial<br />

in the face of climate change. During<br />

Binnies’ 100th year celebrations held at<br />

Eden Hall, the official residence of the<br />

British High Commissioner to Singapore<br />

on 5 Dec 2022, HE Kara Owen shared<br />

more about Binnies’ contributions to the<br />

water stories of Singapore and the UK.<br />

Countries have been grappling with<br />

the effects of climate change, and<br />

governments have much to learn from<br />

one another. According to HE Kara<br />

Owen, despite the different geographies<br />

of Singapore and the UK, the two<br />

countries share many pain points that<br />

require efficient water management<br />

systems.<br />

“It is not just about water; it can be about<br />

the life and the soul of a city.”<br />

According to HE Kara Owen, Binnies has<br />

developed expertise that can be adapted<br />

for use in one place to another: “Both<br />

Singapore and London have evolved<br />

as cities because they were ports, but<br />

as sea levels start to rise as a result of<br />

climate change, we have to think about<br />

how to control flooding… What Binnies<br />

has worked on here can be brought back<br />

to the UK — in terms of solutions relating<br />

to flooding and coastal management.”<br />

In the UK, Binnies worked on the £4.7m<br />

‘Transforming the Trent Valley’ (TTTV) scheme<br />

since 2019, which included projects aimed<br />

at restoring rivers and floodplains, improving<br />

pathways and cycleways and creating ways to<br />

improve natural heritage. 1 One aspect which<br />

Binnies contributed was to map and value the<br />

habitats and land cover within the study area.<br />

Moving forward, HE Kara Owen added that<br />

having partnerships with local communities,<br />

authorities and water companies can bring<br />

together new ideas and technologies, such as<br />

membrane filtration and sensors.<br />

“Before, if you wanted to see what was<br />

happening in the water mains, you would have<br />

to dig them up. Today, we harness digitisation<br />

and sensors, and integrate them fully into<br />

water management, maintenance and repair<br />

systems. That is something in which Binnies<br />

is an expert.”<br />

Reference<br />

1 Binnies. Transforming the Trent Valley. <br />

It is not just about water; it can be<br />

about the life and the soul of a city.<br />

Her Excellency Kara Owen<br />

British High Commissioner to Singapore<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 17



and not enough of it”<br />

These two sides to the global water crisis reflect the uneven distribution<br />

of the precious resource across the globe, but Ulrik Gernow, Grundfos’ group<br />

executive vice-president and COO says dialogue through digitalisation,<br />

collaborative efforts and the circularity approach can restore balance.<br />

By Amira Yunos<br />

What water crises need to be<br />

addressed urgently?<br />

Ulrik Gernow: <strong>Water</strong> and climate<br />

change are interlinked, and that has<br />

led to two sides to the global water<br />

crisis — too much water, and not<br />

enough of it.<br />

On one hand, countries around the<br />

world are experiencing extreme<br />

weather events such as flooding<br />

because of climate change. This year<br />

alone, catastrophic floods have hit<br />

Pakistan, impacting a third of the<br />

country; Australia’s southeast has<br />

experienced some of the nation’s worst<br />

recorded flood disasters, while heavy<br />

monsoon rains have also affected about<br />

450,000 homes and more than 100,000<br />

hectares of farmland in Thailand.<br />

cities in <strong>Asia</strong> urbanise and populations<br />

increase.<br />

Coupled with challenges such<br />

as increasing droughts globally,<br />

water pollution, and ageing water<br />

infrastructure that subsequently leads<br />

to water loss within the system, also<br />

known as non-revenue water. This<br />

means we are losing more of the<br />

precious resource.<br />

This is further exacerbated by our<br />

continued linear approach with<br />

regards to water use. In the linear<br />

approach, water withdrawn from<br />

natural water bodies or harvested from<br />

rainwater is used and then disposed,<br />

treated or untreated, into waterways<br />

that flow into the ocean eventually.<br />

approach to water use to a higher level<br />

of circularity and reuse.<br />

In your opinion, how prepared is<br />

the global water and wastewater<br />

industry in mitigating these water<br />

crises?<br />

Gernow: I am encouraged to see<br />

that the water and wastewater<br />

industries are acknowledging this<br />

On the other hand, water is a scarce<br />

and rapidly depleting resource.<br />

Demand for water is soaring alongside<br />

population growth and economic<br />

development. The situation is<br />

particularly acute in <strong>Asia</strong>, where up<br />

to 3.4 billion people could be living in<br />

water-stressed environments in <strong>Asia</strong><br />

by 2050.<br />

I believe this consumption model of<br />

‘take, make, consume, and waste’ is<br />

unsustainable, and has contributed<br />

significantly to the current water crises<br />

we are facing, as it has led to a strain<br />

on our finite water resources in<br />

addition to generating waste<br />

and causing environmental<br />

degradation.<br />

Ulrik Gernow,<br />

group executive vice-president<br />

and COO of Grundfos<br />

<strong>Water</strong> demand is forecasted to<br />

increase by 55% by 2030 as more<br />

We see it more crucial<br />

than ever to shift our<br />

18 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


Grundfos’ digital<br />

dosing pumps<br />

ensure accuracy<br />

in addition of<br />

chemicals to treat<br />

water and prevent<br />

contamination<br />

and acting purposefully to take<br />

increased responsibility. Further,<br />

companies continuously innovate<br />

and incorporate new technologies<br />

including artificial intelligence (AI),<br />

Internet of Things (IoT), and big<br />

data, which have contributed to the<br />

sectors’ preparedness to tackle<br />

ongoing water crises.<br />

players are increasingly leveraging<br />

partnerships with customers and<br />

end-users to tap on synergies in<br />

R&D as well as the exchange of best<br />

practices.<br />

Grundfos works with manufacturers<br />

to reduce resource consumption in<br />

industrial processes. As part of a<br />

network of consultants, universities,<br />

and technology providers, Grundfos<br />

supports brewing company<br />

Carlsberg’s total water management<br />

treatment plant in Fredericia,<br />

Denmark with optimal pumps and<br />

dosing systems, enabling the plant<br />

to recycle up to 90% of its process<br />

water.<br />

Grundfos also partnered with dairy<br />

company Arla Foods to achieve<br />

substantial reductions in energy use,<br />

emissions and costs at its Westbury<br />

dairy site in the UK by delivering a<br />

turnkey end-to-end system for chilled<br />

and ice water featuring intelligent<br />

pumps and controls. The new system<br />

helped the site attain savings per<br />

year of 481,800kWh energy and<br />

194 tonnes of CO2, with a return on<br />

investment of less than two years.<br />

How does water circularity mitigate<br />

the water crises?<br />

Gernow: Integrating circularity<br />

into the way we approach water<br />

is integral to ensuring sustainable<br />

water management. By transitioning<br />

to a circular economy for water, we<br />

reduce water consumption, reuse and<br />

recycle water and wastewater, and<br />

recover materials such as minerals and<br />

nutrients from water and wastewater,<br />

which contribute to the reduction<br />

of greenhouse gas emissions. This<br />

helps diversify our water supply and<br />

enhances our resilience to the threat of<br />

water insecurity.<br />

It is crucial for the water and<br />

wastewater industry to embed circular<br />

principles throughout its businesses<br />

to tackle such water crises. Circularity<br />

focuses on designing waste out of the<br />

resource ecosystem and maximising<br />

the value of resources by keeping them<br />

in use for as long as possible.<br />

<strong>Water</strong> reuse is a big part of circularity.<br />

By ensuring wastewater is effectively<br />

treated to a quality that makes it<br />

possible to feed back into our water<br />

cycles, it allows water to be saved<br />

At Grundfos, we are leveraging<br />

innovations such as intuitive and<br />

intelligent dosing pumps to maximise<br />

the efficiency and reliability of dosing<br />

equipment, allowing us to get the<br />

most out of the water we have used<br />

by harnessing it repeatedly.<br />

Additionally, cognisant that<br />

organisations cannot work in silos<br />

and collaboration is critical to the<br />

success of solutions aimed at<br />

mitigating water crises, industry<br />

Grundfos dosing systems are found both inside and outside of the Carlsberg total water<br />

management plant<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 19


efficiency and sustainability, reduce<br />

water and energy consumption and<br />

increase the reuse of resources, which<br />

in turn helps to cut down on operation<br />

costs. This enables companies to<br />

create more value while reducing their<br />

dependency on the dwindling and<br />

costly resource of water.<br />

The key challenge for water industries<br />

to adopt a circular model has moved<br />

beyond convincing them ‘why’. It is<br />

now understanding ‘how’ — while<br />

businesses are clear that operating<br />

sustainably is no longer a ‘nice to<br />

have’, the next step is raising greater<br />

awareness and education on how<br />

circular principles are key areas of<br />

consideration for businesses when<br />

embarking their sustainability journey.<br />

Going green is undeniably a big task.<br />

For businesses that do not know where<br />

to start, tap on relationships with<br />

aligned partners within the industry<br />

and both the public and private sectors<br />

to benefit the trajectory of the circular<br />

Circularity in<br />

product lifecycle<br />

in times of scarcity. <strong>Water</strong> treatment<br />

solutions are capable of empowering<br />

companies to reuse their wastewater,<br />

reduce costs, and do their part to<br />

ensure that our natural water sources<br />

are not exploited.<br />

How does digitalisation contribute<br />

to better water circular practices?<br />

Gernow: Through digitalisation,<br />

we can approach water use more<br />

strategically. Traditionally, humanity’s<br />

relationship with the water system<br />

has been a one-way process, moving<br />

water from supply to demand. Now,<br />

new digital innovations are able turn<br />

this relationship into a dialogue — by<br />

retrieving feedback throughout the<br />

process. At Grundfos, we innovate<br />

across the water cycle and apply<br />

digital technologies with the aim<br />

to improve water circularity and<br />

efficiency.<br />

For instance, real-time sensors and<br />

data analytics are increasingly used<br />

globally to conduct pre-emptive<br />

and predictive maintenance of<br />

the entire water system. These<br />

intuitive technologies help enhance<br />

sustainable operations and resiliency<br />

of infrastructure, ensuring that water<br />

is used and managed optimally by<br />

preventing wastage of resources and<br />

energy.<br />

What are the benefits and<br />

challenges of transitioning to a<br />

water circular model, and what<br />

advice do you have for companies<br />

who encounter such challenges?<br />

Gernow: Besides the environmental<br />

value generated by a water circular<br />

model, the business case of<br />

transitioning to a circular economy for<br />

water is clear. Embedding circularity<br />

allows businesses to improve<br />

water system.<br />

Such strategic partnerships can help<br />

businesses understand the complexity<br />

of shifting to a circular model, come<br />

up with solutions more quickly, and<br />

capture the best value out of the circular<br />

transition. At Grundfos, our ambition is<br />

to help industries globally to save water<br />

and energy, thereby reducing climate<br />

footprint, while proving such solutions<br />

are financially attractive through a total<br />

cost of ownership valuation. These<br />

solutions exist today, and at Grundfos<br />

we work with industries to apply them.<br />

What does water circularity mean to<br />

Grundfos?<br />

Gernow: Sustainability is part of<br />

Grundfos’ DNA. We recently became<br />

the first organisation in the water<br />

solutions sector validated for our 2050<br />

net-zero target by the science-based<br />

20 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


CED wastewater<br />

treatment and<br />

recycling system in<br />

Grundfos’ factory in<br />

Bjerringbro, Denmark,<br />

which enables water<br />

reuse<br />

Grundfos Utility<br />

Analytics software<br />

strengthens a water<br />

utility’s ability to<br />

monitor, diagnose,<br />

predict, and plan<br />

for responses to<br />

leaks and bursts by<br />

providing real-time<br />

data and insights<br />

into network<br />

behaviour<br />

targets initiative (SBTi), a climate<br />

action organisation that enables<br />

companies to set greenhouse gas<br />

(GHG) emissions reduction targets<br />

grounded in science. SBTi also<br />

validated Grundfos’ near-term 2030<br />

emission reduction targets.<br />

In addition to our emissions reduction<br />

target, we also aim to transition to a<br />

circular economy for water by making<br />

sure that we use water resources<br />

efficiently, while increasing reuse.<br />

First, we aim to optimise solutions<br />

for our customers at every stage of<br />

the operational water cycle, including<br />

water intake, water consumption,<br />

water treatment, water reuse and<br />

water replenishment. One of our goals<br />

is to save 50 billion m 3 of water by<br />

2030 through the development and<br />

installation of water efficient and water<br />

reuse solutions. We also aim to ensure<br />

year-on-year reduction of our own<br />

water withdrawal; having now halved<br />

our own water consumption by 50%.<br />

For instance, we built a wastewater<br />

treatment and recycling system in<br />

our factory in Bjerringbro, Denmark<br />

to recycle water used for cathodic<br />

electrodeposition (CED). The system<br />

sends wastewater through a threefiltration<br />

system, then to a Grundfos<br />

reverse osmosis unit, before the<br />

purified water is returned to the CED<br />

tanks. We believe that used water is<br />

a resource that can be reused when<br />

it is treated and can be looped back<br />

into production — thereby closing<br />

the water circuit and capturing the full<br />

value of water.<br />

Second, we strive to save energy<br />

through smarter pump and water<br />

treatment solutions. Traditionally,<br />

massive amounts of energy are<br />

required to move and treat water. We<br />

believe that this can and must be done<br />

more efficiently through our pump<br />

solutions such as speed-regulated<br />

pumps and highest energy efficient<br />

motors which allows us to reduce our<br />

carbon emissions.<br />

Finally, beyond addressing our carbon<br />

footprint by being a water steward,<br />

tackling our vast use of resources is<br />

equally important. As manufacturers,<br />

we have the responsibility to ensure<br />

that every step of the product<br />

lifecycle promotes reuse, repair,<br />

remanufacturing, and recycling.<br />

We are in a process to reduce our<br />

global footprint by enabling a wider<br />

green supply chain and continue<br />

to explore how to embed circular<br />

principles throughout our business to<br />

reduce impact on the planet.<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 21




in the Middle East<br />

With the recent opening of IDE Technologies’ regional office<br />

in Dubai, Mohamed Sebbane, IDE’s country manager, MENA,<br />

shares more of IDE’s efforts to deliver its water treatment<br />

solutions to the Middle East.<br />

By Amira Yunos<br />

Companies cannot remain<br />

entrenched in old technology;<br />

they must constantly innovate,<br />

refine, and improve the<br />

technology.<br />

Mohamed Sebbane<br />

IDE’s country manager, MENA<br />



The opening of IDE Meyah <strong>Water</strong> Solutions<br />

in Dubai on 10 Jan <strong>2023</strong> signalled this<br />

Israeli water desalination company’s<br />

strategy to expand its business operations<br />

in the Middle East and North Africa (MENA)<br />

region.<br />

With UAE as a critical player in the<br />

region that has developed a solid water<br />

pipeline, including desalination bus, well<br />

water reuse, and industrial water, IDE<br />

Technologies is focused on supporting<br />

UAE’s policy which aims to ensure the<br />

optimal use of recycled water. Specifically,<br />

the company aims to support efforts of<br />

preserving the country’s water resources,<br />

including drinking and groundwater, to<br />

meet the future needs of all sectors and<br />

promote the use of recycled water for<br />

its economic, social, and environmental<br />

benefits.<br />

Delivering 3 million m 3 /day of water<br />

worldwide, IDE has led the water industry<br />

with advanced thermal and membrane<br />

desalination plants, including large plants<br />

worldwide in China, India, the US, Australia,<br />

and Israel.<br />

“Solving the Middle East water challenges<br />

is a crucial priority of IDE,” Sebbane said.<br />

With more than 60 granted patents in<br />

the R&D field of desalination and water<br />

treatment, IDE’s invention, the MAXH2O<br />

Pulse Flow RO (PFRO), is a method<br />

for reverse osmosis (RO) water reuse<br />

systems, enabling operation at high<br />

recovery and flux.<br />

Its PFRO technology challenges<br />

conventional RO operation by discharging<br />

brine in a pulse flow regime with short,<br />

forceful surges. The frequently and rapidly<br />

changing osmotic and gauge pressure<br />

prevents the formation of biofouling<br />

and reportedly eliminates the need for<br />

chloramine dosing. This method has<br />

six times the ability of the standard<br />

RO process to remove concentrated<br />

solute ions or fouling particles. The RO<br />

membrane operates in dead-end mode<br />

between brine discharge pulses, with<br />

100% recovery.<br />

Low water costs, high plant availability<br />

and reliability, and optimal operation and<br />

maintenance processes are paramount in<br />

desalination, Sebbane added.<br />

22 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


“Companies cannot remain<br />

entrenched in old technology; they<br />

must constantly innovate, refine,<br />

and improve the technology,” he<br />

said, “Energy consumption is one<br />

of the most critical indicators of an<br />

efficient plant operation. These energy<br />

consumption savings directly result<br />

from optimised plant design and<br />

proper operation.”<br />


IDE’s process for better brine<br />

minimisation — which is “one of the<br />

most significant challenges [they]<br />

currently face”, Sebbane added — was<br />

driven by an increasing regulatory<br />

pressure and growing environmental<br />

awareness. The most economical<br />

approach to brine minimisation would<br />

be to increase the load on the RO<br />

stage and maximise its recovery as<br />

much as possible, thereby reducing<br />

the size of the thermal crystallisation<br />

unit to the minimum. However, three<br />

major factors limit the recovery of any<br />

RO system: osmotic pressure, the<br />

chemistry of the feed water, and low<br />

brine flow through the membranes<br />

associated with high recovery.<br />

IDE’s innovation to convert highrecovery<br />

wastewater treatment<br />

solutions into water that can be used<br />

for various purposes or transformed<br />

into assets is its MAXH2O Desalter,<br />

a RO process that operates at a high<br />

recovery rate without compromising<br />

the membranes’ service life,<br />

resulting in a ‘zero environmental<br />

footprint’.<br />

It operates by recirculating treated<br />

water through the RO system at<br />

high shear velocity, continuously<br />

precipitating supersaturated salts<br />

from the recirculated brine. This<br />

process minimises brine quantity<br />

to the maximal threshold limit<br />

of the osmotic pressure with<br />

minimal operational expenditures,<br />

overcoming these limitations and<br />

supporting brine minimisation.<br />

“IDE’s MAXH2O Desalter is a gamechanger<br />

for industrial effluents,<br />

as it overcomes challenges of<br />

increasing recovery using RO,”<br />

said Sebbane, “It is a fit for multiple<br />

industrial markets that must comply<br />

with stringent water management<br />

regulations as we supply clients with<br />

high permeate water recovery across<br />

numerous applications.”<br />



According to Sebbane, the climate<br />

crisis comes on top of more familiar<br />

challenges for the industry: ageing<br />

networks, rising populations, shrinking<br />

fresh water supplies, evolving<br />

regulations, and tightening budgets.<br />

<strong>Water</strong> utilities are making significant<br />

strides towards net zero for their<br />

communities by leaning into innovation<br />

to achieve the double bottom line of<br />

being more resilient and sustainable.<br />

Even then, Sebbane said that local<br />

authorities should be more specific<br />

about regulations related to brine<br />

discharge with minimal environmental<br />

effects: “IDE is shifting the dial with<br />

its sustainable solutions, seeing the<br />

current emergency as a significant<br />

opportunity for growing awareness of<br />

the need for positive solutions.”<br />

IDE intends to expand in UAE by<br />

implementing high recovery RO-based<br />

solutions to minimise brine, municipal,<br />

and industrial effluents for industrial<br />

customers.<br />

In addition, it works as an EPC<br />

contractor, developer, and operator,<br />

developing new desalination plants<br />

using competitive and efficient RO<br />

water desalination technology.<br />

The MAXH2O<br />

Desalter maximises<br />

the potential of<br />

RO to treat brine<br />

by eliminating the<br />

limitation of water<br />

chemistry<br />

With IDE’s recent hosting of a<br />

professional seminar in Abu Dhabi to<br />

discuss industrial and municipal water<br />

challenges and explore the future of<br />

water solutions in the MENA region,<br />

the award-winning ‘Desalination<br />

Company of the Year’ (2022 and 2011)<br />

IDE continues to collaborate with<br />

local clients to build relationships of<br />

trust.<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 23


The new solution of Gradiant RO Infinity system for lithium concentration and recovery enables higher levels<br />

of lithium recovery in a fraction of the time of conventional methods, at reduced carbon, water footprint and<br />

capital costs (Image: Gradiant)<br />



already underway<br />

in water”<br />

Prakash Govindan, co-founder and COO of Gradiant,<br />

shares the revolution against water scarcity: key<br />

pressures, strategy breakthroughs and impact for the<br />

industry to collectively reduce water footprint.<br />

By Amira Yunos<br />

with an innovation-centred business strategy<br />

to make it profitable for businesses to adopt<br />

our standards. Recently, we have scored a<br />

few successes to bring water sustainability<br />

to the mining industry. We are helping mining<br />

and energy leaders improve yields by up to<br />

20% while cutting carbon emissions and<br />

energy usage by 85% and freshwater intake<br />

by 90%. Given the kind of sustainable savings<br />

associated with such numbers, we are setting<br />

new standards for industrial water users.<br />

We have hundreds of patents related to<br />

different water-treatment processes. Those<br />

include patents for reverse osmosis (RO),<br />

membrane filtration, biological wastewater,<br />

carrier gas extraction, selective contaminant<br />

extraction, and advanced oxidation process<br />

(AOP) technologies. These solutions can result<br />

in achieving wastewater recovery rates of up<br />

to 99%.<br />

Beyond that, however, we apply efficiencyboosting<br />

models powered by digital twins<br />

technology and artificial intelligence (AI) to<br />

find new ways our clients can benefit from<br />

our solutions — such as recovering resources<br />

from wastewater. In this way, we upgrade<br />

our clients’ technology, and their ability to<br />

maximise the efficiency of this technology.<br />

What are the key global pressures of<br />

water scarcity?<br />

Govindan: According to the UN, if current<br />

water consumption trends continue, global<br />

demand will exceed supply by 40% by 2030.<br />

Erratic weather patterns linked to climate<br />

change are already leading to intense drought<br />

episodes in different parts of <strong>Asia</strong> and the<br />

world, some of the worst in over 1,000 years.<br />

The water cycle is the first to feel the impact<br />

of climate change and is projected to absorb<br />

most of its impact. For example, we have seen<br />

early signs of global warming speeding up<br />

the water cycle and intensifying droughts and<br />

floods in different areas.<br />

More than 2.2 billion people worldwide are<br />

living without a steady supply of drinkable<br />

water. To put it mildly, we are facing an<br />

unprecedented water shortage crisis that is<br />

likely to threaten both the physical security of<br />

people by virtue of extreme weather events<br />

and a shortage of clean water fuelling the<br />

food supply.<br />

A separate but related issue is the<br />

contamination of freshwater sources.<br />

Groundwater comprises 99% of all freshwater<br />

today, but contamination can spread far and<br />

wide. It then takes a very long time to clean<br />

up, so prevention is key.<br />

As a water solutions provider, what<br />

are Gradiant’s key technology and<br />

strategy breakthroughs to deal with the<br />

aforementioned pressures?<br />

Govindan: Our strategy is to pair technology<br />

What were the challenges faced and how<br />

did Gradiant overcome it?<br />

Govindan: Once contaminated or depleted,<br />

an aquifer can take decades to fully recover.<br />

This brings us to another challenge: we have<br />

demonstrated that the technology to solve our<br />

twin water contamination and scarcity issues<br />

already exists. But how do we apply that<br />

technology at scale? According to the World<br />

Bank, 80% of the world’s wastewater is being<br />

discharged back into the environment without<br />

treatment, and the problem is especially acute<br />

in developing nations.<br />

Industrial water use accounts for about 45%<br />

of global freshwater consumption, and this<br />

share has been growing steadily over the past<br />

few years. By creating powerful incentives for<br />

businesses to adopt Gradiant’s localised water<br />

24 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


solutions, we can slash the water usage and<br />

carbon emissions of a few of the largest<br />

water-intensive companies on the planet.<br />

An example is the pharmaceutical industry.<br />

Toxic by-products from medicine production<br />

are difficult to detect and treat in wastewater<br />

discharges. We built an end-to-end solution<br />

based on carrier gas extraction that results<br />

in a 96% recovery rate of such pollutants.<br />

Another example is the semiconductor<br />

industry: A large chip fab can use up to 10<br />

million gallons of fresh water daily. With our<br />

technology, semiconductor makers can<br />

increase their water recycling rates from<br />

40-70%, now to 99%.<br />

Share a project Gradiant embarked on<br />

to tackle water scarcity. How was the<br />

process and what was the impact?<br />

Govindan: <strong>Water</strong> scarcity in the Middle<br />

East is a daily concern as the region is one<br />

of the most challenging places in the world<br />

for seawater desalination. The high salinity<br />

and organics in the feedwater limit the<br />

design envelope for high flux and recovery<br />

in RO systems. Gradiant partnered with<br />

SAWACO, Saudi Arabia’s leading provider<br />

of municipal and industrial potable water<br />

to deliver a solution to increase freshwater<br />

production without needing a new and<br />

costly infrastructure of seawater intakes<br />

and discharge outfalls. A bolt-on RO Infinity<br />

system for brine concentration will be added<br />

to the existing seawater desalination facility<br />

— total plant production will be almost<br />

doubled without increasing feedwater flow<br />

or pre-treatment needs while reducing<br />

discharge flows that would require disposal.<br />

new intake and discharge infrastructure,<br />

was using Gradiant’s technology. The RO<br />

Infinity process, in an extended three-year<br />

demonstration of continuous operation<br />

at 99.8% system availability showed 50%<br />

recovery while using less energy than<br />

competing technologies. The project had<br />

80% more freshwater production, with<br />

150,000 mg/L TDS brine concentration,<br />

1,920m 3 /day system capacity and three<br />

years of continuous pilot testing, only ¼ of<br />

energy is consumed versus conventional<br />

technologies.<br />

Given Gradiant’s footprint in various<br />

industries, what are the company’s goals<br />

in <strong>2023</strong> to reduce these industries’ water<br />

footprint and encourage sustainability<br />

practices?<br />

Govindan: A technological revolution<br />

is underway in water, which is as much<br />

about transforming the business model<br />

of water treatment and adding value in<br />

new ways as it is about solving pressing<br />

environmental issues with innovative<br />

technology. Our ultimate goal is to eliminate<br />

any liquid discharge and reclaim 100%<br />

water through employing our reuse and<br />

recycling technologies — today, we are<br />

already achieving this in an economically<br />

sustainable way.<br />

Specifically, we recognise that industries<br />

such as semiconductors, energy and food<br />

and beverage (F&B) stand to make some of<br />

the biggest water savings in the next few<br />

years, and we are jumping into aid that with<br />

our technology. We will continue to improve<br />

our end-to-end solutions and offer water<br />

solutions with an as-a-service aspect.<br />

Moving forward, what are a few practices<br />

the industry can adopt collectively in the<br />

fight against water scarcity?<br />

Govindan: Since industries, as compared<br />

to individual households, use huge<br />

amounts of water, they can benefit the<br />

most from operating cutting-edge water<br />

recycling technologies and are therefore<br />

uniquely positioned to lead the way into a<br />

new, more responsible paradigm of water<br />

use. In this way, new membrane technology<br />

and other advanced water purification<br />

techniques that mimic natural processes<br />

such as the rain cycle are already fuelling<br />

a shift towards decentralised water<br />

recycling and reuse facilities. Results<br />

show major reductions in harmful<br />

emissions and freshwater withdrawal<br />

for industries as diverse as energy and<br />

mining, pharmaceuticals, semiconductor<br />

manufacturing and F&B.<br />

This is a huge paradigm shift for many<br />

industries, which have struggled to rein in<br />

their water usage and wastewater discharge<br />

for years. That would accelerate the<br />

revolution already underway in water.<br />

The company had been experiencing an<br />

unprecedented demand for water but could<br />

not increase existing production capacity<br />

due to constraints on seawater intake and<br />

brine discharge capacities. The Saudi<br />

government needed additional freshwater<br />

production on a short timeline of fewer<br />

than six months. The answer to expanding<br />

capacity, given the limited options and<br />

the high cost of time and money to build<br />

Gradiant’s founders,<br />

COO Prakash Govindan<br />

and CEO Anurag Bajpayee<br />

at the Global Innovation<br />

Center in Singapore<br />

(Image: Gradiant)<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 25



A tale of NRW reduction<br />

in metro Manila<br />

1 Manila’s water<br />

system prior to<br />

the installation<br />

of Cla-Val<br />

90-series PRVs<br />

2 A sample<br />

of Cla-Val’s<br />

90-series PRVs<br />

being installed<br />

into Manila’s<br />

water system<br />

with more<br />

than 700 MLD<br />

recovered after<br />

six years of the<br />

programme,<br />

reducing NRW<br />

from 66% in<br />

2007 to 39% in<br />

2013<br />

1 2<br />

In 2007, Maynilad <strong>Water</strong> Services<br />

faced an enormous challenge. They<br />

were tasked with providing 100%<br />

service coverage in the next few<br />

years and connecting an additional 3<br />

million people who lacked access to<br />

piped water, with no additional water<br />

resources.<br />

With non-revenue water (NRW)<br />

running at 1.5 million litres per day,<br />

or 66% of total system input, the<br />

financial viability of the company was<br />

also in question.<br />

The central NRW team was created<br />

in 2008 and tasked to lead the<br />

NRW reduction and management<br />

programme, which, at the time, was<br />

considered one of the world’s largest<br />

projects in terms of the water losses<br />

sustained and also magnitude of<br />

work required.<br />

The NRW programme involved<br />

breaking the whole network into<br />

hydraulically isolated and measurable<br />

areas, before monitoring and<br />

diagnosing each area. The team<br />

was trained and equipped to detect<br />

both surface and sub-surface<br />

leaks. Active leakage control, pipe<br />

replacement and rehabilitation,<br />

removal of illegal connections,<br />

integrated meter management, and<br />

active pressure control were all key<br />

components.<br />

By 2013, six years into the<br />

programme, more than 700 million<br />

litres per day (MLD) had been<br />

recovered, bringing NRW down to 39%<br />

and enabling new piped supply to over<br />

400,000 clients. This led to increased<br />

billing volumes of 56% and a 107%<br />

increase in total revenues, meaning<br />

the project was beneficial for both<br />

consumers and the company.<br />

By 2018, the NRW level was down to<br />

27%. Cla-Val claims that these results<br />

were due to their Cla-Val 90-Series<br />

pressure regulating valve (PRVs)<br />

deployed across the network. The<br />

company added that these results<br />

showed that strong local partnerships,<br />

along with quality manufacturing of<br />

their equipment and regional factory<br />

support, provided “solid, long-term<br />

results”.<br />

26 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>




help water and wastewater<br />

treatment<br />

By Varshneya Sridharan, product manager for<br />

pressure and temperature measurement, Emerson<br />

All stages of the municipal water<br />

treatment process, including sediment<br />

removal, filtration, disinfection, and<br />

chemical dosing, must be accurately<br />

controlled to ensure results and<br />

regulatory compliance. Accurate and<br />

repeatable flow measurement is also<br />

required throughout the distribution<br />

system to diagnose leakage and<br />

monitor consumption for billing<br />

purposes.<br />

Three essential elements are required<br />

to engineer a differential pressure<br />

(DP) flow meter. The primary element<br />

creates a pressure drop across the<br />

flow meter by introducing a restriction<br />

in the pipe, and this engineered<br />

restriction enables Bernoulli’s equation<br />

to be used for a flow rate calculation.<br />

The pressure drop is measured by a<br />

secondary element, a DP transmitter,<br />

while tertiary elements such as a flow<br />

computer or control system use<br />

these inputs to report a flow rate.<br />

It is worth noting that modern DP<br />

transmitters often do not need a flow<br />

computer as that function is built into<br />

the transmitter’s electronics.<br />

We will now discuss two applications<br />

in water treatment and related<br />

processes that are rarely discussed<br />

as potential DP flow meter<br />

28 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


applications. In the first case, we will<br />

discuss transporting potable water<br />

through long distances and in the<br />

second case, we will discuss the<br />

dissolved air flotation cell process<br />

where purities are removed from a<br />

slurry to derive high value items in<br />

water applications in metals and<br />

mining industry.<br />




<strong>Water</strong> must be moved consistently<br />

and requires flow measurement<br />

and control through the various<br />

treatment stages. Traditional flow<br />

meters for large line sizes can have<br />

high capital costs thus insertion-style<br />

meters such as Rosemount Annubar<br />

averaging pitot tubes are a more<br />

economical option. Underground<br />

piping restricts access for installation<br />

and maintenance of measurement<br />

points, but again, the insertionstyle<br />

meters such as averaging<br />

pitot tubes can accommodate the<br />

electronics above grade for easy<br />

access and maintenance. Further,<br />

complex distribution systems require<br />

monitoring at multiple points over<br />

long distances.<br />


The Rosemount Annubar and<br />

Rosemount compact flow meters are<br />

suitable technologies.<br />



In mineral processing, air flow<br />

into a dissolved air flotation cell<br />

is an important measurement to<br />

make the processing of mined<br />

ores economically feasible. The air<br />

flow creates bubbles that capture<br />

hydrophobic minerals containing<br />

metals such as copper or lead.<br />

The amount of air pumped into a<br />

cell must be controlled, and flow<br />

metering allows this to be done<br />

accurately based on changing<br />

process conditions.<br />

Averaging pitot tubes are the<br />

preferred DP flow technology<br />

because they create low permanent<br />

pressure loss, are cost effective and<br />

easy to install. To overcome costs<br />

involved with wiring and laying of<br />

cables at sites, a straightforward<br />

pairing of the Rosemount 3051S<br />

wireless differential pressure flow<br />

transmitter with WirelessHART<br />

technology which could be deployed<br />

at site. As a flow meter that can be<br />

battery powered and wireless, the<br />

WirelessHART flow solution offers<br />

instrumentation of measurement<br />

points without the cost of wiring<br />

and delivers more than 99% data<br />

reliability.<br />



When necessary, high mass flow<br />

accuracy can be achieved with<br />

an economical instrument. The<br />

insertion style meter minimises<br />

equipment and installation expenses<br />

by eliminating flanged connections<br />

and welding. Multivariable<br />

transmitter technology can provide<br />

mass flow output without the need<br />

for an external flow computer.<br />


The Rosemount 3051S multivariable<br />

transmitter (3051SMV) can make<br />

additional static pressure and<br />

temperature measurements<br />

in conjunction with differential<br />

pressure. The static pressure<br />

measurement is taken from a sensor<br />

found on the high-pressure side of<br />

the transmitter. The temperature<br />

measurement is taken from a<br />

temperature element external to the<br />

main transmitter body. The 3051SMV<br />

can calculate a compensated flow<br />

value via the onboard flow computer.<br />

This can compensate for a variety of<br />

dynamic fluid properties such as the<br />

discharge coefficient for Reynoldsdependent<br />

meters (eg, orifice plates),<br />

density, and viscosity.<br />

Real-time flow calculations performed<br />

by the 3051SMV ensure accurate DP<br />

flow across operating range of any<br />

differential pressure transmitter.<br />

The capabilities of DP solutions<br />

are pushed even further in more<br />

extreme applications such as steam,<br />

cryogenic, and high temperature<br />

applications in various industries.<br />

The accuracy and flexibility of these<br />

systems combined with their low<br />

lifecycle costs make them ideal for<br />

flow applications.<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 29




for removing PFAS compounds<br />

By Rajeev Bhavaraju, head of technical services and business development - APAC<br />

and Dr Dirk Steinhilber, technical marketing manager, LANXESS<br />

training facility of the Country Fire Authority<br />

(CFA). An aqueous and PFAS-containing fireextinguishing<br />

foam was used for many years at<br />

this location, causing persistent chemicals to<br />

pollute the groundwater.<br />

Containerised PFAS treatment plant (Image: Haldon Industries)<br />

Currently no standardised standard flow sheet<br />

was established yet because water composition<br />

of each PFAS treatment project is unique<br />

and comes with its own set of challenges<br />

and variables. These include the molecular<br />

composition of PFAS compounds (long chain<br />

versus short chain, carboxylates versus<br />

sulfonates); the presence of co-contaminants;<br />

the receiving environment; regulatory<br />

compliance; waste disposal; client’s budget,<br />

and time constraints. Haldon Industries — a<br />

Australian provider of water treatment plants —<br />

developed a water treatment plant that utilised a<br />

selective, multi-stage ion exchange process.<br />

Regenerable ion exchange resins (IER) and<br />

highly selective, single-use resins are both<br />

capable of removing per- and polyfluoroalkyl<br />

substances (PFAS) to ensure compliance<br />

with legal limits in water treatment. This<br />

article describes an innovative, multi-stage<br />

process in which the benefits of selective<br />

anion exchange resins play a vital role in<br />

final polishing and reducing the level of<br />

perfluorobutanoic acid (PFBA) to nondetectable<br />

levels and with high-capacity<br />

utilisation, too. The efficient removal of PFBA<br />

will be among the challenges in the water<br />

treatment processes of tomorrow.<br />

Australia is playing a pioneering role in<br />

the detection and removal of PFAS from<br />

groundwater. In 2018, an intergovernmental<br />

agreement between the Commonwealth,<br />

federal states and territories entered into<br />

force as a concerted response to the<br />

problem of PFAS contamination to protect<br />

the environment and, as a precautionary<br />

measure, human health. The effectiveness of<br />

this standardised approach is demonstrated<br />

in our case study from the state of Victoria<br />

in southeast Australia, where levels of PFAS<br />

as high as 200ppb were removed from<br />

the wastewater of the former fire service<br />

Haldon Industries used a mobile waste<br />

processing plant specially designed for the<br />

on-site treatment of waste contaminated with<br />

PFAS, employing a strategy centred around<br />

the utilisation of various adsorptive and anion<br />

exchange media in a sequence tailored to each<br />

project’s unique characteristics and treatment<br />

objectives.<br />

The mobile plant, which is capable of<br />

processing 125,000l of water per day, was put<br />

into operation on the site of the old fire service<br />

training facility and successfully removed high<br />

concentrations of PFAS in compliance with the<br />

EPA standards that apply in Australia.<br />

30 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


Equalization<br />

Tank<br />

Pretreat<br />

GAC<br />

MP 62<br />

WS<br />

TP 108<br />

DW<br />

1<br />

QC,<br />

Discharge<br />

or Reuse<br />

The IER configuration encompassed the<br />

regenerable, weak base anion exchange<br />

resin Lewatit MP 62 WS, followed by<br />

the highly selective, single-use anion<br />

exchange resin Lewatit TP 108 in a lead/<br />

lag configuration. The filter, which was filled<br />

with Lewatit MP 62 WS, reduced the majority<br />

of all the PFAS (Fig. 2, grey). The remaining<br />

leakage, mostly PFBA, was reduced to<br />

non-detectable levels with the use of Lewatit<br />

TP 108. Lewatit TP 108 achieved a high<br />

throughput (Fig. 2) of 10,000 bed volumes<br />

(BV), which reduced the OPEX costs<br />

associated with the disposal of the used<br />

resin.<br />

2<br />



The polyamide resin columns filled with<br />

Lewatit TP 108 were operated in a lead/lag<br />

polisher configuration. The average flow<br />

rate was 20m 3 /h. The specific operating<br />

throughput was 10-20 BV/h. The pH value of<br />

the feed was maintained at between five and<br />

seven.<br />

The process includes oxidation, adjustment<br />

of the pH value, flocculation, the separation<br />

of solids, media filtration, the use of<br />

granulated activated carbon for removing<br />

dissolved organic carbon (DOC), ion<br />

exchange using weak and strong base anion<br />

exchange resins.<br />



It was important to comply with the following<br />

specifications and limits of the Australian<br />

drinking water guidelines, which were that<br />

combined levels of perfluorooctanesulfonic<br />

(PFOS) and perfluorohexanesulphonic acid<br />

(PFHxS) does not exceeding 0.07ppb, the<br />

level of perfluorooctanoic acid (PFOA) was<br />

less than 0.56ppb and short-chain PFAS (eg,<br />

PFBA) was down to the limit of detection.<br />

The removal of PFBA is a challenge in<br />

many remediation projects. PFBA is<br />

harder to remove through adsorption by<br />

means of granulated activated carbon and<br />

1 Fig. 1: Process flow<br />

diagram outlining<br />

the multi-stage<br />

process<br />

2 Fig. 2: Overall<br />

efficiency of PFAS<br />

removal with the<br />

multi-barrier method:<br />

Lewatit MP 62 WS<br />

(grey) feed, effluent<br />

of Lewatit MP 62 WS<br />

(black), effluent of<br />

Lewatit TP 108 (red,<br />

final outflow)<br />

3 Fig. 3: Removal<br />

efficiency of Lewatit<br />

TP108 for PFBA<br />

conventional ion exchange because the level<br />

of interaction between the short perfluoro<br />

chains and the hydrophobic adsorbents is<br />

lower. The selective anionic ion exchange<br />

resin Lewatit TP 108 from LANXESS was<br />

developed to remove these short-chain<br />

compounds.<br />

PFAS-selective ion exchange resin also<br />

reduces the resin inventory due to the fast<br />

exchange kinetics and short empty-bed<br />

contact time (EBCT). Compact, polisher resin<br />

columns that fit into a container were used<br />

and helped to cut costs. Compared with<br />

granulated activated carbon, which typically<br />

requires an EBCT that is four times as long,<br />

Lewatit TP 108 is more efficient.<br />

3<br />

Despite high feed concentrations, the<br />

combination of the LANXESS ion exchange resin<br />

Lewatit MP 62 WS as a working filter and Lewatit<br />

TP 108 as polisher ensured direct discharge with<br />

non-detectable levels of PFAS throughout the<br />

entire project. Even PFBA was removed due to<br />

the utilisation of Lewatit TP 108.<br />

Since the plant entered operation in August<br />

2019, more than 54 million litres of treated<br />

water have been continuously discharged into<br />

the environment, and in full compliance with<br />

the EPA limits and drinking water guidelines<br />

that apply in Australia. The project, which was<br />

completed in late 2021, is regarded as one of<br />

the most successful PFAS water treatment<br />

initiatives in Australia.<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 31



AS A WAY OF<br />

efficiently removing<br />

ethoxylates from wastewater<br />

The Roxia Plasma Oxidizer (RPO) aims to destroy 90-99% of<br />

pharmaceutical residues from the hospital wastewaters.<br />

RPO is an alternative to<br />

ozone, UV and chemical<br />

water treatment<br />

Plasma Oxidizer. “We had no alternative,” said<br />

Janne Ahonen, specialist for health, safety,<br />

and environment at Wallac.<br />



Wallac learned of Roxia’s plasma technology<br />

from a news piece about the removal of<br />

pharmaceutical residues from hospital<br />

wastewater. Roxia is another Finnish company<br />

that provides dewatering, industrial automation<br />

and environmental technologies, particularly<br />

for mining, minerals, metallurgy, chemical,<br />

food and pharmaceutical industries.<br />

Wallac is a Finnish technology company<br />

based in Turku and part of the PerkinElmer<br />

Group, a health technology company. Wallac<br />

is one of their largest product development<br />

and manufacturing units, where equipment,<br />

reagents and software are developed and<br />

manufactured, and research is carried out for<br />

disease screening.<br />

Those operations produced wastewater which<br />

contained phenolic ethoxylates — organics<br />

that are known to be hard to remove from<br />

wastewater. In addition, they were not allowed<br />

to be discharged into the public sewer<br />

network. Previously, the only alternative for<br />

managing wastewater with difficult chemicals<br />

was to transport those a few hundred miles<br />

away to a hazardous waste management<br />

facility. No realistic solution existed for on-site<br />

treatment before the introduction of Roxia<br />

In particular, the piece of technology Wallac<br />

was interested in was the RPO, a chemical-free<br />

non-thermal plasma technology for industrial<br />

water purification. Plasma-generated oxidants<br />

would come in direct contact with water to<br />

remove colour, odour and organic residues,<br />

while disinfecting the water.<br />

Wallac’s interest in the product was due<br />

to their wastewater containing phenolic<br />

ethoxylates as a side-product of its operations.<br />

Conventional water treatment methods such<br />

as UV, ozone and chemical treatment were<br />

ineffective in removing such dissolved organic<br />

pollutants from waters. As per tightening EU<br />

regulations, water that contains phenolic<br />

ethoxylates cannot be discharged to a public<br />

sewer network. Without an alternative, it<br />

32 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


must be handled at a hazardous waste<br />

management facility.<br />

For Wallac, this posed two challenges: Firstly,<br />

wastewaters containing phenolic ethoxylates<br />

had to be transported over long distances;<br />

and secondly, handling the wastewater at a<br />

hazardous waste management facility was<br />

costly.<br />

For those reasons Wallac was keen to try<br />

out an alternative after they found out about<br />

Roxia’s non-thermal plasma technology.<br />

The solution presented by Roxia provided a<br />

possible alternative to the earlier-mentioned<br />

conventional water treatment methods.<br />


Shortly after reaching out to Roxia, a lab test<br />

was run with a water sample from Wallac.<br />

The RPO’s purification process worked<br />

as follows: firstly, treated water would run<br />

through a non-thermal plasma field. This<br />

would create strong oxidants from the treated<br />

water and surrounding air, which in turn would<br />

destroy pollutants and disinfect the water with<br />

lasting effects. The product’s design would<br />

create a large plasma-water contact area,<br />

which would make the removal of pollutants<br />

from the water more efficient. The water from<br />

the process could then be reused on-site.<br />

Plasma generated<br />

oxidants effectively<br />

remove colour, odour<br />

and organic residues<br />

while disinfecting<br />

the water<br />

weeks. “Installation of the RPO test equipment<br />

went through without any relevant issues.<br />

Within two weeks we had the process in full<br />

service,” said Ahonen.<br />

In addition to removing the chemicals<br />

efficiently, the RPO’s reactor core could<br />

tolerate “difficult” wastewaters and would<br />

require no air pre-treatment or compressors to<br />

produce and deliver the oxidants to the water.<br />

It was also low maintenance, due to the core<br />

being made of stainless steel and having no<br />

moving parts, as well as the plasma electrodes<br />

being not easily corroded by the process.<br />

During the trial period, Roxia specialists<br />

also regularly collected water samples. They<br />

conducted a detailed analysis and used the<br />

results to optimise the process for maximum<br />

convenience and energy efficiency. According<br />

to Ahonen, the plasma oxidation process<br />

“worked like a charm”.<br />

Wallac also had the ability to monitor the<br />

plasma oxidation process in real-time<br />

through the Roxia Malibu online portal. The<br />

Roxia Malibu portal is a combined Industrial<br />

Internet of Things (IIoT) online process<br />

monitoring, maintenance, and analysis<br />

tool. The data collected is sent to a cloud,<br />

processed there, and finally shown in the<br />

Malibu online portal. It also has a customised<br />

user interface tailor-made for individual<br />

processes, allowing for ease of use and<br />

access for users. The portal thus enabled<br />

preventive maintenance and analysis of the<br />

process.<br />


With plasma oxidation successfully removing<br />

the harmful substances, Wallac no longer<br />

needed to transport the wastewater over<br />

long distances to hazardous waste treatment<br />

plants. After seeing the results from the RPO<br />

test units, Wallac chose it as their new water<br />

treatment solution.<br />

When asked whether Wallac would choose<br />

the same product again, Ahonen gave an<br />

optimistic response: ”I would recommend<br />

this product to any process where harmful<br />

substances need to be removed from waste<br />

solutions before discharge to sewer. Roxia’s<br />

technology enables us to meet EU emission<br />

limits, even production operations where<br />

Triton X-100 is used.”<br />

Images: Roxia<br />

After treatment with plasma oxidation, there<br />

were no traces of phenolic ethoxylates<br />

detected in the waters. With positive results<br />

from the lab, the testing was taken to the<br />

full-scale, on-site unit for a trial period of a few<br />

Plasma Oxidizer equipment at Wallac; a remote view in Roxia Malibu<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 33



true cost of sewer ingress<br />

Inflow of stormwater and infiltration of groundwater into sewerage networks is<br />

a constant operational challenge, but a Norwegian municipality is utilising the<br />

InfoTiles software and gaining better understanding of its network with a digital<br />

approach, says Marco Westergren, chief analytics officer at InfoTiles.<br />

Infiltration of storm and ground water can increase<br />

during periods of heavy rain and storm events<br />

The inflow and infiltration (I&I) of stormwater<br />

and groundwater into sewerage networks<br />

can add considerable cost to water utilities<br />

in pumping, treating, and discharging excess<br />

water. In Norway, InfoTiles’ digital water and<br />

wastewater management system is being used<br />

by one municipality for I&I water detection<br />

and real-time monitoring of extraneous water<br />

in sewer networks and is already reducing<br />

service failures.<br />

Using the system’s integrated internet of things<br />

(IoT) and machine learning technologies,<br />

along with pre-existing real-time data from<br />

their supervisory control and data acquisition<br />

(SCADA) systems, operators discovered<br />

that pumps were pushing 5 million m 3 of<br />

wastewater through its systems per year, of<br />

which at least 1 million m 3 was water from<br />

I&I. The extra operating cost to the utility in<br />

processing this extraneous wastewater was<br />

up to €2m, excluding the energy cost of<br />

transporting the water to the treatment works.<br />


For many utilities and municipalities, I&I can<br />

account for an average of 20-50% of the<br />

annual flow in sewers. However, during snow<br />

melt and wet autumns in Norway the figure<br />

regularly hits 80-90%.<br />

Inflow is stormwater that flows into<br />

wastewater pipes through faults such as<br />

holes, cracks, joint failures, and broken<br />

connections. Infiltration occurs when<br />

groundwater enters the wastewater network<br />

through faults in pipes, compounding the<br />

flow.<br />

While it is typically acknowledged that most<br />

I&I is caused by ageing infrastructure that<br />

requires maintenance or replacement, some<br />

are also caused by erroneous connections<br />

such as building drainage and rooftops<br />

connected to the wrong pipes. When this water<br />

penetrates the wastewater network, it can<br />

overload the system — a risk during periods of<br />

heavy rain or storm events.<br />

In worst cases, it can lead to untreated<br />

wastewater released into the environment<br />

and the pollution of rivers and seas. It also<br />

increases the risk of cross-contamination of<br />

drinking water, where polluted water from the<br />

environment enters through faults in clean<br />

water pipes.<br />

Increases in the frequency and intensity<br />

of rainfall as a result of a changing climate<br />

exacerbate the problem, making the<br />

wastewater network ever more vulnerable to<br />

failure and putting the environment at greater<br />

risk. Furthermore, if left untreated, pipeline<br />

34 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


integrity will only deteriorate over time,<br />

increasing the volume of ingress water to<br />

be treated.<br />


The challenge for InfoTiles, which is<br />

headquartered in Stavanger, Norway, and<br />

its utility partner was to determine when and<br />

where I&I was occurring and decide on the<br />

appropriate response. The InfoTiles platform<br />

uses SCADA control system data together with<br />

meteorological data to analyse dry and wet<br />

weather behaviour of wastewater networks.<br />

Using information from pump stations in<br />

real-time, the model calculates the total<br />

and excessive volume transported, allowing<br />

operators to see not only weather-related<br />

trends, but also the resulting costs both in<br />

terms of treatment and power expenditure.<br />

Once problem areas are identified, the search<br />

area can be narrowed down using compact<br />

IoT devices within the same platform. Some<br />

pumping stations have multiple inputs or long<br />

upstream pipeline networks. By selectively<br />

measuring different branches, it is possible<br />

to identify exactly where the water intrudes or<br />

exclude areas that are not the problem.<br />

Sensor devices placed at critical points in the<br />

network can collect additional meteorological<br />

data such as precipitation, problematic<br />

thresholds of rain volume, or seasonally<br />

varied sensitivities. These feed into a central<br />

dashboard and the detailed measurements<br />

can then be analysed by water managers and<br />

operators.<br />


For InfoTiles’ Norwegian partner, the software<br />

found that about 50% of I&I was handled by<br />

only four of its 27 pumping stations, which<br />

enabled maintenance teams to target further<br />

data gathering and prioritise maintenance and<br />

repairs.<br />

The analysis found that a number of pumps<br />

were constantly overloaded with I&I — even<br />

in dry weather conditions. It was found that<br />

upstream pipes situated close to the banks of<br />

InfoTiles platform uses<br />

SCADA control system<br />

data together with<br />

meteorological data<br />

to analyse dry and wet<br />

weather behaviour of<br />

wastewater networks<br />

a river were laid in soil saturated by water.<br />

The wastewater network was unnecessarily<br />

absorbing excess groundwater, which<br />

was then being transported, treated, and<br />

released back into the river.<br />

The four pumping stations identified had<br />

already been chosen for upgrade due to the<br />

existing strain, but with the insights gained<br />

using InfoTiles’ software, this decision could<br />

be challenged. It was decided that a better<br />

investment would be to improve the integrity<br />

of the upstream wastewater network.<br />

With a lack of detailed evidence of where<br />

and when the I&I is occurring, many utilities<br />

opt to increase the capacity investment of<br />

wastewater transport and treatment to avoid<br />

systems becoming overrun. While this may<br />

mitigate the risk of pollution incidents, it also<br />

increases costs for customers and does not<br />

solve the underlying problem.<br />


COSTS<br />

Energy is a significant part of the additional<br />

treatment and transportation costs involved<br />

when processing I&I. Therefore, reducing<br />

energy consumption also represents a<br />

potential saving on operational expenditure.<br />

The Norwegian utility’s energy cost reached<br />

record highs of €0.7/kWh in 2022, a drastic<br />

increase over the previous year due to<br />

the Europe-wide energy crisis, and sitting<br />

alongside other price increases including<br />

for wastewater treatment chemicals. Taking<br />

the utility’s average I&I of 1 million m 3 of<br />

water as a baseline, this means it was facing<br />

a total additional operating cost of at least<br />

€2m, 165,000kWh of excessive electricity<br />

use, and 4.1 tonnes of excessive carbon<br />

emissions.<br />

Extra energy consumption also represents<br />

higher carbon footprint, so accurately<br />

identifying and remedying I&I can help utilities<br />

meet carbon commitments, including net zero<br />

targets.<br />


Through using InfoTiles software, the precise<br />

location, cost, savings and solutions of I&I has<br />

become clearer to the utility. Better informed<br />

capital and operational investment decisions<br />

can be made to improve the most vulnerable<br />

parts of wastewater infrastructure and<br />

processes.<br />

Without accurate I&I monitoring, utilities may<br />

make misplaced investments, including pump<br />

upgrades, pipe replacements, and treatment<br />

equipment upgrades. This can lead to ever<br />

increasing operating expenditure on energy<br />

and maintenance as excess water continues to<br />

enter the network and undergoes treatment.<br />

Magne Eide, CCO, InfoTiles said, “By<br />

working closely with the Norwegian utility to<br />

understand and address its I&I challenges,<br />

InfoTiles has demonstrated the best practice<br />

in this challenging area. We seek to share<br />

these developments widely so that other<br />

organisations can further understand the<br />

benefits that digital transformation can bring to<br />

key critical operations.<br />

“With digital software technology such as<br />

InfoTiles, water utilities can get close-toreal-time<br />

data on I&I and use it to make<br />

calculations and informed decisions. For<br />

those utilities pushing digital transformation,<br />

monitoring and understanding I&I represents<br />

a significant opportunity to reduce total<br />

expenditure, protect the environment and<br />

deliver an enhanced service to customers and<br />

communities.”<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 35

FOCUS<br />

PHANTOR 6000:<br />

A mobile solution to boost<br />

drinking water supply in<br />

South East <strong>Asia</strong><br />

The 2022 Berlin Green Award Winner, the atmospheric<br />

water generator PHANTOR 6000, was built to produce water out<br />

of humidity, while raising the standards of energy efficiency.<br />

of up to 6,000l per day, sufficient for<br />

communities and water production at<br />

industrial scale. The energy supply can<br />

be covered by regenerated electricity,<br />

increasing sustainability for this form<br />

of water supply.<br />

When placed next to a wind power<br />

plant, a photovoltaic system or a<br />

conventional power plant, PHANTOR<br />

6000 can absorb excess energy and<br />

use it to produce drinkable water,<br />

making it energy-efficient in the market<br />

with its high possible water output<br />

at low possible energy output. The<br />

integrated smart-controlled software<br />

of PHANTOR 6000 optimises the water<br />

supply and keeps costs low. It also<br />

delivers water reliably due to remote<br />

monitoring and control.<br />

PHANTOR 6000 won<br />

the Green Award<br />

in the category<br />

Innovation in<br />

GreenTech<br />

Seven hundred and fifty million<br />

people worldwide have no access to<br />

clean drinking water. The numbers<br />

are rising, due to climate change and<br />

natural catastrophes. However, the<br />

rise of global warming also brings<br />

the rise of humidity, an underutilised<br />

resource for atmospheric water<br />

generators to open an additional<br />

water source, making the most out of<br />

this situation.<br />

Developed and manufactured by<br />

Austria-based Imhotep Industries,<br />

PHANTOR 6000 harvests drinking<br />

water from the air through a series of<br />

filters such as activated carbon filter,<br />

UV sterilisation and mineralisation<br />

— without producing waste and<br />

with minimal CO2 footprint. Needing<br />

electrical energy of approximately<br />

300Wh/l to produce drinking water,<br />

PHANTOR 6000 supplies an output<br />


The harvested drinkable water falls<br />

within an ideal range of 6-10°C<br />

temperature. The product air flow<br />

rate is 15,000m³/h. An additional<br />

by-product is filtered, dry and precooled<br />

air with approximately 25°C at a<br />

volume of 15,000m³/h.<br />

First, humid air is sucked in, filtered,<br />

and then fed to the cooling unit. <strong>Water</strong><br />

36 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>

FOCUS<br />

precipitates in it and is then collected in<br />

a 6,000l tank. The dried and cooled air<br />

is circulated in the container and a high<br />

cooling efficiency is achieved inside the<br />

container (Fig. 1).<br />


With its size of a 20in standard container<br />

(6m x 2.3m x 2.6m) and a weight of about<br />

11 tonnes, the PHANTOR 6000 also has<br />

a plug-and-play solution which takes<br />

15 minutes to set-up at any location, even in<br />

the absence of groundwater or seawater.<br />

1<br />

This means this generator can be<br />

applied in regions where drinking water<br />

connections, groundwater or seawater<br />

are not accessible, or in remote places<br />

such as construction sites, hospitals and<br />

self-sufficient hotels. Further applications<br />

in office buildings, municipalities and<br />

agriculture have the potential of generating<br />

water from air. The PHANTOR 6000 also<br />

impacts various industries which require<br />

pure process water, from microchip<br />

production to indoor farming, and where<br />

self-sufficient supply of water is becoming<br />

more and more important. It is also<br />

reportedly involved in hydrogen production<br />

projects.<br />

2<br />


PHANTOR 6000 can thrive in the tropics,<br />

where there are high humidity and<br />

temperatures above 20°C. Singapore and<br />

the rest of South East <strong>Asia</strong> fit the bill. At the<br />

sustainability event GreenTech Festival in<br />

Singapore on 17 and 18 Nov 2022, the team<br />

demonstrated the use of this atmospheric<br />

generator at Gardens by the Bay, with<br />

a temperature of 29°C and 89% relative<br />

humidity level, where more than 200l/h<br />

could be produced live — meaning 5,000l<br />

per day — with approximately 320Wh/l of<br />

electrical energy usage.<br />

Today, the generator still resides in<br />

Singapore and can be located at the<br />

Singapore based company Jebsen &<br />

Jessen.<br />

3<br />

1 Fig. 1: Its high<br />

energy efficiency<br />

process due to<br />

innovative air<br />

circulation and<br />

cooling<br />

2 This mobile water<br />

giant provides up to<br />

6,000l of freshwater<br />

for locations without<br />

groundwater or<br />

seawater<br />

3 The PHANTOR 6000<br />

requires minimal<br />

maintenance<br />

through stable<br />

components<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 37

FOCUS<br />

CERAMAC:<br />

a ceramic microfiltration<br />

system to improve water<br />

quality<br />

By Holly Shorney-Darby, PhD, PE, and Jumeng Zheng, PhD<br />

Filtration and disinfection are used in<br />

surface water treatment to remove and<br />

inactivate harmful pathogens, such as<br />

cryptosporidium, giardia, and viruses.<br />

While conventional sand and mixed<br />

media filters remove larger diameter<br />

pathogens and reduce turbidity to meet<br />

the regulatory limits, these filtration<br />

methods are susceptible to upsets and<br />

have ripening times, which increase the<br />

risk of pathogen breakthroughs.<br />

Membranes have been promoted<br />

as a barrier to these pathogens and<br />

particles, or turbidity. Polymeric<br />

membranes have been implemented<br />

since the 1990s, but a problem<br />

polymeric membrane systems face is<br />

the durability of the polymer material<br />

over time. Some polymerics are<br />

susceptible to exposure to oxidants<br />

and some experience material<br />

expansion due to physical stresses<br />

during operations. For example, having<br />

high solids concentration in feed<br />

water and backwashing for membrane<br />

cleaning can lead to changes in<br />

membrane properties, which result<br />

in the weakening of fibres or passage<br />

of particles and viruses though the<br />

membrane. These changes help explain<br />

failures in water quality observed in<br />

polymeric membrane systems, which<br />

either have breaches or weakened<br />

fibres over time.<br />

The CeraMac microfiltration process<br />

by PWNT from Netherlands has a<br />

record for exceeding filtration water<br />

quality requirements while providing<br />

a system that can be cleaned and<br />

maintained for over 15 years. The<br />

system uses Metawater’s ceramic<br />

microfilter membranes, with multiple<br />

monolith membranes in one steel<br />

vessel. This membrane has a nominal<br />

pore size of 0.1 micron and has been<br />

in service in Japan since 1998, with<br />

more than 24 years in operation at<br />

one site. With five full-scale CeraMac<br />

plants worldwide of 424MLD in total<br />

treatment capacity, and over 140<br />

installations by Metawater in Japan of<br />

900MLD in total treatment capacity,<br />

there have been no reported breaks of<br />

ceramic membranes in service.<br />

The CeraMac installations typically<br />

achieve turbidities less than 0.05<br />

nephelometric turbidity unit (NTU).<br />

They have little variability in turbidity<br />

levels after backwashing or cleaning.<br />

These help utilities that have difficulty<br />

meeting turbidity limits with sand or<br />

have failing polymeric membrane<br />

systems, and ensure quality water is<br />

supplied to customers in the service<br />

area.<br />

Its ceramic microfiltration serves as<br />

a barrier to particulate contaminants,<br />

CeraMac microfiltration at the Andijk III water treatment plant in the<br />

Netherlands operating since 2014<br />

38 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>

FOCUS<br />

but in terms of other dissolved water<br />

quality parameters, pre-treatment<br />

process is required to convert<br />

them to a removable form by a<br />

different process such as oxidation<br />

or coagulation. Coagulation can be<br />

conducted in different pre-treatment<br />

steps, including in-line coagulation,<br />

conventional clarification, or dissolved<br />

air flotation. The in-line coagulation<br />

process, sometimes with oxidation,<br />

can coagulate dissolved organic<br />

carbon (DOC) and colour, with DOC<br />

removal at 30-70% depending on<br />

raw water properties. The in-line<br />

coagulation results in the highest<br />

solids loading onto the membranes,<br />

which is viable due to the monolith<br />

structure, though it does not impact the<br />

filtered water quality. It may improve<br />

the filtered water quality by providing<br />

a layer of flocculated materials,<br />

sometimes referred to as a ‘cake’ layer<br />

on the membrane for contaminants<br />

to pass through. While water passes<br />

through this ‘cake’ layer, contaminants<br />

are potentially captured within the layer<br />

and removed by backwashing to waste.<br />

It is not a barrier for dissolved<br />

metals. Dissolved metals, such as<br />

manganese and aluminium can<br />

pass through the membrane. It<br />

is, however, possible to oxidise<br />

manganese and iron upstream of the<br />

membrane, or provide a dedicated<br />

metals removal process, such as a<br />

manganese reactor bed, upstream<br />

or downstream of the CeraMac<br />

to remove dissolved metals. For<br />

aluminium, un-optimised coagulation<br />

chemistry is often why too much<br />

dissolved aluminium passes through<br />

the membrane when aluminiumbased<br />

coagulants such as aluminium<br />

sulfate or polyaluminium chloride are<br />

used. Typically, a pH adjustment or a<br />

change in the coagulant dose will bring<br />

the aluminium concentration to low<br />

levels, for instance, less than 50ug/l.<br />

Ferric coagulant can also be used for<br />

coagulation pre-treatment, and the iron<br />

concentration in the filtrate is usually<br />

below detection limits.<br />

For disinfection credits for surface<br />

water treatment, CeraMac will achieve<br />

4.0 log cryptosporidium, 4.0 log giardia,<br />

and 1.0 log virus inactivation, based on<br />

log removal credits from the California<br />

Department of Public Health. The<br />

actual level of removal is likely to be<br />

higher, due to the ceramic barrier and<br />

tight nominal pore size distribution<br />

of the membrane. Natural virus tests<br />

show what log removal of viruses are<br />

achieved in an installation, and those<br />

tests show higher than 1.0 log virus<br />

removal in practice.<br />

Another mode of disinfection can be<br />

with an oxidant applied to the feed<br />

water. The CeraMac system is designed<br />

with materials that are compatible with<br />

different oxidants, including ozone.<br />

These chemicals can be for cleaning or<br />

dosed for oxidation in the main process<br />

flow. For example, some plants operate<br />

with ozone in the feed water to the<br />

membrane such that an ozone residual<br />

persists at typically 0.5-1.0mg/l on the<br />

membrane surface. The filtration of<br />

ozonated water by CeraMac differs,<br />

with higher flux and lower operating<br />

transmembrane pressure than without<br />

ozone. With ozone application, utilities<br />

with taste and odour compounds<br />

can expect removal of geosmin and<br />

2-methylisoborneol (MIB).<br />

Ozone contact within the CeraMac<br />

vessels may also provide additional<br />

disinfection due to the improved ozone<br />

transfer efficiency through membrane<br />

pores. Another reason is the additional<br />

contact of pathogens that are captured<br />

on the membrane surface and are<br />

exposed to continuous ozone until<br />

these pathogens are backwashed from<br />

the surface.<br />

No specific disinfection credits have<br />

been quantified by a third party or<br />

regulator for this combined ozone<br />

and CeraMac process, but full-scale<br />

installations and pilot-scale studies<br />

indicate that these are added water<br />

quality and performance benefits of<br />

the CeraMac system when ozone<br />

is applied. It is also possible to<br />

continuously dose chlorine or peroxide<br />

upstream of the membrane. It would<br />

be beneficial to perform a cleaning<br />

function which could assist with<br />

disinfection.<br />

The first CeraMac microfiltration<br />

surface water treatment plant has<br />

been in operation since 2014. This and<br />

other ceramic membrane plants have<br />

different pre-treatments to meet water<br />

quality goals for a specific site. It is a<br />

system that allows efficient operation<br />

with the ability to clean if necessary.<br />

The quality of the water is maintained<br />

over time due to the system’s<br />

resilience. This is supported by the<br />

monolith membrane, which is made of<br />

inorganic material that is not subjected<br />

to physical pore size changes or<br />

breakages which can affect water<br />

quality in the filtrate over time.<br />

Zheng added that ceramic membranes are<br />

excellent barriers for pathogens<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 39

FOCUS<br />



NIST framework<br />

implementation progress<br />

By Vijay Vaidyanathan, regional vice-president, solutions<br />

engineering, <strong>Asia</strong>-Pacific and Japan, Claroty<br />

Much of modern society relies on<br />

stable, secure critical infrastructure,<br />

but cybersecurity threats constantly<br />

challenge our complex and connected<br />

systems, placing national security,<br />

economic stability, and public<br />

safety at risk. A recent report by<br />

the US Government Accountability<br />

Office (GAO) examined 16 critical<br />

infrastructure sectors and their<br />

progress towards implementing<br />

the National Institute of Standards<br />

and Technology’s (NIST) framework<br />

for improving critical infrastructure<br />

cybersecurity.<br />

<strong>Water</strong> and wastewater, a diverse and<br />

under-resourced space, is one of<br />

only three, along with government<br />

facilities and the defense industrial<br />

base, identified in the report as having<br />

determined the rate of framework<br />

adoption by entities within their sector.<br />

According to the <strong>Water</strong> Resources<br />

Institute (WRI), by 2065, Singapore’s<br />

water use could almost double from<br />

about 430 million gallons a day. In<br />

response to this demand, Singapore<br />

has embarked on a number of<br />

initiatives to increase the availability<br />

of water for both domestic and nondomestic<br />

use, with investments in<br />

research and technology to treat,<br />

recycle and supply water.<br />

40 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>

FOCUS<br />

One such effort is the Keppel<br />

Marina East Desalination Plant,<br />

which is capable of producing<br />

30 million gallons of clean water<br />

every day, built with a government<br />

contract estimated at up to<br />

S$500m. Another is Singapore’s<br />

wastewater recycling campaign,<br />

NE<strong>Water</strong>, from which the country<br />

already derives 40% of its water<br />

from five water plants currently in<br />

operation, and hopes are that it will<br />

rise to 55% by 2060.<br />

With all of this increased demand<br />

for clean, available water, any<br />

potential disruption in water<br />

resources calls for more resilient<br />

infrastructure protection.<br />

Unfortunately, many water and<br />

wastewater utilities, particularly<br />

small systems, lack the resources<br />

to support a robust cybersecurity<br />

programme. Cyber-physical<br />

threats to water infrastructure can<br />

lead to a range of negative effects,<br />

including changes to water quality<br />

and available supply levels.<br />




The Cyber Security Agency of<br />

Singapore (CSA) acknowledges<br />

that while Singapore’s water<br />

industrial control systems (ICS)<br />

are segregated from the Internet,<br />

there are other attack vectors to<br />

be considered, including from<br />

insiders, employees and third-party<br />

service providers. The website<br />

stated that readiness and resilience<br />

— in all aspects — must remain<br />

the keystone. Consequently, the<br />

water sector was included as a<br />

critical information infrastructure<br />

(CII) to be protected in Singapore’s<br />

Cybersecurity Bill passed in 2018.<br />



It is important to invest in<br />

technologies that can accurately<br />

identify connected assets and<br />

vulnerabilities, and also provide<br />

remediation strategies. A secure<br />

remote access solution (SRA)<br />

can help facilities connect with<br />

confidence and provide role- and<br />

policy-based access controls,<br />

alerting, and the ability to audit,<br />

investigate, and terminate malicious<br />

activity. ICS is relatively safe<br />

from cyber-attacks as they are<br />

segregated from the Internet, and<br />

are not accessible remotely over<br />

public networks. Unfortunately,<br />

the other attack vectors such as<br />

insiders and third-party service<br />

providers may inadvertently cause<br />

a contamination of the water during<br />

system maintenance.<br />

Besides reducing risk and better<br />

managing cybersecurity threats,<br />

a solution for the extended<br />

IoT (XIoT) can help align and<br />

prioritise cybersecurity activities<br />

for converged enterprises.<br />

By identifying and prioritising<br />

opportunities for continuous<br />

and repeatable improvement,<br />

organisations can apply risk<br />

management principles and best<br />

practices to improve security<br />

and resilience regardless of size,<br />

degree of cybersecurity risk, or<br />

cybersecurity sophistication.<br />

Cybersecurity risk affects the<br />

bottom line. It can drive up costs,<br />

affect revenue, and harm the ability<br />

to innovate and get and retain<br />

customers. Cyber-physical security<br />

solutions enable management<br />

to focus on business drivers to<br />

guide cybersecurity activities<br />

and consider risk management<br />

processes. These tools can help<br />

organisations determine necessary<br />

actions for critical service delivery<br />

and prioritise ROI.<br />

Other attack vectors such as insiders<br />

and third-party service providers may<br />

inadvertently cause a contamination of the<br />

water during system maintenance<br />

Vijay Vaidyanathan<br />

Claroty’s regional vice-president, solutions engineering, <strong>Asia</strong>-Pacific and Japan<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 41

FOCUS<br />



modern pressure<br />

regulating valves<br />

The impacts of climate change and urbanisation have resulted<br />

in challenges within the water sector. Pressure management has<br />

arguably become an indispensable tool to strengthen water networks<br />

and ensure a reliable water supply around the world. Cutting-edge<br />

pressure regulating valves (PRVs) can help utilities reduce mechanical<br />

stress and ensure balance within water networks by combining<br />

simplicity, longevity, and digital functionality.<br />

Every year, utilities worldwide lose<br />

126 billion m 3 of water and US$39bn<br />

in revenue. 1 This is classified as<br />

non-revenue water (NRW), a term<br />

referring to the difference between<br />

the water that is introduced into<br />

a distribution system and the<br />

water that is actually billed to the<br />

customer. In order to meet the<br />

demands of the future, utilities<br />

will have to drastically reduce the<br />

amount of water that is lost each<br />

year.<br />

NeoFlow is the<br />

newest generation of<br />

pressure regulating<br />

valves by GF Piping<br />

Systems<br />

There are two major causes for<br />

this issue. First, utilities may<br />

experience commercial losses due<br />

to mismanagement. This includes<br />

inadequate knowledge of where<br />

meters are located, the wrong<br />

metering technology, corruption, or<br />

theft. Physical losses, on the other<br />

hand, refer to technical issues in<br />

the water network. In this context,<br />

insufficient pressure management<br />

is mostly blamed in ever-expanding<br />

42 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>

FOCUS<br />

cities, where water networks are<br />

frequently over-pressurised to meet<br />

demands which shorten the lifespan<br />

of pipes and fittings and cause<br />

leakages.<br />




Focusing on over-pressurised<br />

pipes has proven to be an effective<br />

strategy. As a result, burst pipe<br />

networks need to be repaired,<br />

or even better, prevented before<br />

the damage is done. Pressure<br />

management technologies such as<br />

PRVs are considered solutions as<br />

they reduce flow rates of existing<br />

leaks and limit mechanical stress on<br />

the infrastructure, resulting in lower<br />

burst rates and prolonged asset life.<br />

Studies have shown that reducing<br />

the pressure of water networks by<br />

25% can cut water losses by up to<br />

75%. 2<br />

By facilitating precise pressure<br />

management, PRVs bring balance<br />

into water networks. However,<br />

utilities may face issues during<br />

operation, as traditional PRVs<br />

are often made of metal and are<br />

mechanically complex. Abrasion and<br />

corrosion lead to short maintenance<br />

intervals and therefore more labour<br />

and higher costs for utilities.<br />

Meanwhile, the newest generation<br />

of PRVs has overcome these<br />

challenges.<br />

traditional models and instead<br />

feature an axial flow design. An<br />

axial flow allows valves to be fully<br />

operational between 1-100%<br />

opening which gives operators the<br />

control for precise adjustments.<br />

The lack of a diaphragm or actuator<br />

stem also reduces maintenance<br />

requirements and speeds up<br />

servicing. This simplification makes<br />

the valves nearly maintenancefree<br />

and therefore cost-effective,<br />

while more compact dimensions<br />

simplify the process of retrofitting<br />

networks — especially in spaces<br />

that are tight and difficult to<br />

access. Finally, modern PRVs offer<br />

digital functionality that allows<br />

operators to monitor a variety of<br />

parameters and further optimise<br />

their pressure management. By<br />

1 The compact and lightweight<br />

construction of NeoFlow simplify<br />

the installation and free up space for<br />

additional equipment<br />

2 The PRV is designed to prevent<br />

over-pressurised pipes by ensuring<br />

an accurate and stable flow, as well<br />

as increased flow capacity<br />

1<br />

2<br />

Instead of relying on metal, modern<br />

polymers are introduced to lower<br />

the overall weight and therefore<br />

enable easier handling, installation,<br />

and maintenance. Additionally,<br />

their material properties result in<br />

components that are corrosion-free<br />

as well as long-lasting. At the<br />

same time, modern PRVs forego<br />

the complex construction of<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 43

FOCUS<br />

4<br />

adding components such as flow meters<br />

without having to modify the piping system,<br />

operators can easily create automated water<br />

networks that can be programmed remotely.<br />



Moya Indonesia is a Jakarta-based water<br />

distribution operator that runs a number<br />

of water treatment projects in the region<br />

and supplies water to East Jakarta and<br />

Tangerang. The Moya network in the city<br />

of Tangerang provides water to 30,000<br />

customers as well as 90% of the water<br />

used in the nearby Jakarta International<br />

Airport. In order to support the current<br />

production capacity of 1,150l per second<br />

while simultaneously maintaining a stable<br />

pressure, Moya Indonesia implemented<br />

NeoFlow pressure regulating valves by GF<br />

Piping Systems.<br />

3<br />

3 GF Piping Systems is<br />

designed for gas or<br />

water pipe networks<br />

and is quick, safe,<br />

and simple to<br />

connect without the<br />

need for special tools<br />

4 The wide range and<br />

size of Neoflow is<br />

available for district<br />

metering zones<br />

As a response to the current needs of the<br />

water sector, Swiss flow solutions provider<br />

GF Piping Systems developed NeoFlow,<br />

the company’s newest pressure regulating<br />

valve. Due to its axial flow construction,<br />

the valve does not require an actuator<br />

stem or diaphragm and only consists of<br />

three primary components. The valve is<br />

also less prone to cavitation damage.<br />

With a compact polymer body, NeoFlow<br />

is corrosion-free and, in combination<br />

with its mechanical simplicity, has<br />

longer maintenance intervals than metal<br />

alternatives. As a new generation of PRV,<br />

the valve is fitted with an integrated pilot<br />

valve that allows parameters such as flow<br />

and water quality to be monitored and<br />

controlled with additional equipment.<br />

For the application in Tangerang, NeoFlow<br />

was selected in the dimension DN150.<br />

It was necessary to connect different<br />

piping materials and thus restraint joints<br />

were also needed for installation. GF<br />

Piping Systems also provided its MULTI/<br />

JOINT 3000 Plus system. Designed for<br />

gas or water pipe networks, it was quick,<br />

safe, and simple to connect without<br />

the need for special tools. This avoided<br />

time-consuming traditional jointing<br />

techniques involving collars, flanging,<br />

welding, or the use of thrust blocks. The<br />

compatible solution could be adapted to<br />

local networks due to its updated pressure<br />

management.<br />



Sibu is a landlocked city in the central<br />

region of Sarawak, Malaysia, with a<br />

population of around 160,000 people.<br />

In the past, Sibu’s water board relied on<br />

a metal PRV in the dimension DN250<br />

combined with a controller to manage the<br />

pressure in one of their district metering<br />

areas (DMA). Here, the PRV was meant to<br />

reduce the upstream pressure of 6 bar to a<br />

downstream pressure of 1.6 bar. However,<br />

the metal valve was not capable of<br />

reliably responding to the controller which<br />

resulted in a downstream pressure of 2<br />

bar. In addition, the pressure difference<br />

44 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>

FOCUS<br />

experienced by the valve caused the<br />

disc to oscillate during low flow rates<br />

which led to frequent failure and<br />

damage.<br />

During the search for a solution,<br />

GF Piping Systems Malaysia<br />

approached Sibu water board.<br />

The goal was to maintain a stable<br />

downstream pressure of 1.6<br />

bar regardless of the upstream<br />

pressure and flow conditions. After<br />

gathering data, GF Piping Systems<br />

recommended installing NeoFlow<br />

in the dimension DN300. With its<br />

axial flow construction, NeoFlow<br />

regulated pressure with a minimum<br />

opening of 6% during periods of<br />

low flow rates without a controller.<br />

The valve’s durable materials and<br />

simplified construction prevented<br />

damage within a month of operation.<br />

The benefits of using polymer<br />

valves for proactive pressure<br />

management can be summarised<br />

as follows: It reduces NRW with<br />

fewer pipe bursts. It has a simple,<br />

low-maintenance design, and it is up<br />

to five times more compact than a<br />

standard metal PRV and up to nine<br />

times lighter, thus ensuring fast,<br />

safe, and simple installation, even<br />

in tight spaces. It saves on energy,<br />

resources and costs for existing site<br />

upgrades and new installations, with<br />

up to 40% saving on costs when<br />

using pre-assembled installation<br />

kits.<br />

5<br />

5 The Malaysia<br />

installation is a<br />

DN300, which<br />

is for larger<br />

pipe dimension<br />

and is lighter<br />

by 10 times in<br />

comparison<br />

to the existing<br />

metal PRV<br />

6 A cross-section<br />

of NeoFlow<br />

shows its simple<br />

construction<br />

without an<br />

actuator stem or<br />

diaphragm<br />

Image: GF Piping Systems<br />

References:<br />

1 Roland Liemberger and Alan Wyatt. Quantifying<br />

the global non-revenue water problem. <br />

2 EU Reference document. Good Practices on<br />

Leakage Management. < https://circabc.europa.eu/<br />

sd/a/1ddfba34-e1ce-4888-b031-6c559cb28e47/<br />

Good%20Practices%20on%20Leakage%20<br />

Management%20-%20Main%20Report_Final.pdf><br />

6<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 45





large-scale drinking water<br />

projects in Indonesia<br />

NX Filtration, the global provider of direct nanofiltration (dNF)<br />

membrane technology for pure and affordable water, was selected by<br />

Bayu Surya Bakti Konstruksi, an Indonesian specialist in constructing<br />

water and wastewater treatment plants, to supply its dNF membranes<br />

for various new projects. These orders follow previous projects in Indonesia<br />

related to drinking water supply for the city of Dumai in Sumatra,<br />

Meranti island, and Indonesia’s state-owned hospital in Jakarta.<br />

The new orders relate to<br />

various treatment plants that<br />

Bayu is currently developing in<br />

Indonesia. These are all based<br />

on NX Filtration’s dNF membrane<br />

technology that removes colour and<br />

micropollutants from water while<br />

offering sustainability benefits by<br />

reducing energy and chemicals<br />

consumption.<br />

NX Filtration’s membrane modules in operation at the Dumai municipal drinking water plant<br />

In 2022, Bayu started the design<br />

of a water treatment plant for the<br />

production of drinking water and<br />

industrial process water in Medang<br />

Kampai. This plant will have a<br />

capacity of approximately 450m 3 /h<br />

and is expected to be commissioned<br />

in Q2 <strong>2023</strong>. Bayu is starting the<br />

development of a facility that<br />

46 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


produces drinking water from a lake<br />

in Bengkalis with a final capacity<br />

of 360m 3 /h. Finally, NX Filtration<br />

received an order from Bayu for the<br />

first industrial wastewater project in<br />

Indonesia based on dNF technology.<br />

These new projects follow Bayu’s<br />

previous projects of in Indonesia,<br />

which NX Filtration supplied its dNF<br />

technology. In Sumatra, a 180m 3 /h<br />

drinking water plant has been<br />

running for over a year, providing<br />

Dumai city with drinking water<br />

produced from the local Masjid<br />

River. Its technology is also being<br />

used to produce drinking water at<br />

Meranti island since December 2022<br />

(54m 3 /h with expansion potential to<br />

200m 3 /h) and for Rumah Sakit Cipto<br />

Mangunkusomo, Indonesia’s biggest<br />

state-owned hospital in Jakarta since<br />

2021.<br />

Nyoman Yasa, CEO at Bayu, said, “Our<br />

large-scale municipal drinking water<br />

plant in Dumai has demonstrated for<br />

more than a year how effective NX<br />

Filtration’s hollow fibre nanofiltration<br />

technology is in producing clean<br />

water. We are now able to use this<br />

technology to widely address water<br />

quality and availability issues that are<br />

increasingly prevalent throughout the<br />

country.”<br />

Michiel Staatsen, CEO at NX Filtration,<br />

concluded, “Our dNF technology<br />

has proved its value, demonstrating<br />

high performance combined with low<br />

energy and chemicals consumption<br />

compared to traditional technologies.<br />

We are happy to now extend the<br />

applications to also enable the reuse<br />

of industrial wastewater in Indonesia.”<br />



The Ultra PX delivers significant cost savings in<br />

ultra high-pressure reverse osmosis wastewater treatment<br />

For 30 years, Energy Recovery’s technology has provided significant energy and cost savings for<br />

our customers in desalination. The Ultra PX energy recovery device dramatically reduces the energy<br />

needs, costs, and emissions associated with treating industrial wastewater effluent with ultra<br />

high-pressure reverse osmosis (UHPRO). The device handles pressure of up to 120 bar, while<br />

delivering the superior performance Energy Recovery customers know and trust.<br />

So what’s the potential for savings? In a recent installation supporting wastewater treatment<br />

for reuse at a lithium iron phosphate cathode manufacturing facility in the Hubei province of central<br />

China, the facility saw a reduction in energy consumption of the UHPRO system by 58.6%. Want<br />

to learn more? Read the entire case study and start thinking about how you can use Ultra PX<br />

to make your UHPRO efforts more sustainable.<br />

Ultra PX <br />

Scan the code or read the case study on our website:<br />

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WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 47




water autonomy with<br />

SWRO innovation<br />

The plant operates at<br />

hours with low demand in<br />

Gozo and transfers water<br />

back to Malta<br />

As part of a €100m programme funded by<br />

the EU to improve water quality across Malta,<br />

the Gozo project involved a self-contained<br />

flexible source of high-quality drinking water.<br />

One of 21 islands that make up the Maltese<br />

archipelago, the Mediterranean island<br />

of Gozo had historically depended on<br />

groundwater and a submarine pipeline<br />

sending water from Malta.<br />

To handle peak season tourism demand, the<br />

government of Malta commissioned the €10m<br />

Hondoq plant, which uses seawater reverse<br />

osmosis (SWRO) to produce 9,000m 3 /day and<br />

fulfil the demand of over 3 million m 3 /yr.<br />

Both Israeli companies, AST and ROTEC by<br />

WFI Group, combined to deliver the plant with<br />

optimal available technologies, in ration with<br />

the Israeli National <strong>Water</strong> Company, Mekorot.<br />

The teams had to construct a new modern<br />

facility while working on the existing<br />

building, according to local preservation and<br />

restoration guidelines. The renovation was<br />

undertaken with a local architect and subcontractor.<br />

To accommodate Gozo island’s water<br />

needs, WSC has set out goals for its water<br />

supply to achieve drinking water autonomy<br />

with high efficiency and redundancy and<br />

enhance the quality of the drinking water.<br />

WSC said the historic project is the first RO<br />

project in Gozo that will give autonomy to<br />

the island’s water production.<br />

Boaz Shitzer, CEO of AST and ROTEC<br />

by WFI Group, said: “Malta’s Ministry of<br />

the Environment wanted to maintain the<br />

positioning of green desalination in the<br />

48 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


1<br />

2<br />

Hondoq Bay, with minimum impact<br />

on the environment. As a result,<br />

environmental protection measures<br />

were at the core of the project<br />

strategy and execution.”<br />

Such environmental reduction<br />

measures included designing and<br />

building a high-density polyethylene<br />

(HDPE) pipe under the seabed using<br />

horizontal directional drilling. As a<br />

result, brine is discharged to the sea<br />

350m from the plant, without affecting<br />

seawater vegetation and with minimal<br />

impact on the existing structure.<br />

1 The development<br />

is part of Maltese<br />

WSC’s drive to<br />

become a ‘net<br />

zero impact<br />

utility’<br />

2 WSC plans to<br />

serve both the<br />

Gozo and Malta<br />

islands with a<br />

fresh and steady<br />

water supply<br />

3 Hondoq plant<br />

uses SWRO<br />

3<br />

The plant incorporates a double-pass<br />

process design that can be<br />

implemented at a later stage to meet<br />

World Health Organization (WHO)<br />

and European standards for boron<br />

removal to levels beyond the local<br />

regulations. This will also allow<br />

more water reuse for agriculture,<br />

while minimising impact on the<br />

environment.<br />

Shitzer added: “AST’s winning bid<br />

against several companies was based<br />

on low total water production cost,<br />

together with low energy consumption<br />

and near zero chemicals. WSC’s<br />

strategy included using off-peak<br />

hours production.”<br />

Furthermore, remote plant control<br />

is handled from WSC’s main<br />

operation centre in Shirakawa,<br />

Malta. The plant uses automation<br />

tools based on artificial intelligence<br />

(AI) software to enable updating,<br />

monitoring of performance and<br />

use of predictive maintenance<br />

trends to control the ageing<br />

performance of SWRO pumps<br />

and membranes.<br />

WSC recently won an ‘Industrial<br />

Excellence Award 2022’ for the<br />

Gozo plant for development of<br />

the best engineered project by<br />

the Malta Engineering Excellence<br />

Awards.<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 49


SUEZ produces green gas made in Marseille, where the Géolide plant treats<br />

200,000m 3 of wastewater daily, totaling 76 million m 3 /yr (Image: Altivue GRDF)<br />

SUEZ’S NEW<br />

sustainability goals<br />

On 30 Jan <strong>2023</strong>, French public<br />

utility company SUEZ unveiled its<br />

new sustainable development goals<br />

for 2027 and beyond, through 24<br />

commitments revolving around three<br />

pillars, climate, biodiversity and social<br />

responsibility, for the first time under<br />

its new corporate strategy presented<br />

in September 2022. In terms of climate<br />

commitments, the group is developing<br />

a global approach across three levers.<br />

power generation capacities and new<br />

renewable energy supply contracts<br />

such as solar and wind power.<br />

Next is the reduction of its greenhouse<br />

gas (GHG) emissions and those of<br />

its value chain, contributing to the<br />

communities’ low-carbon transition.<br />

It aims to reduce the emissions from<br />

its water activities by almost 40% by<br />

2030 and from its waste activities by<br />

more than 25% by 2030, excluding<br />

energy from waste. By improving the<br />

environmental performance of its<br />

The first is contributing to<br />

decarbonising energy by reaching<br />

electrical self-sufficiency in Europe<br />

in <strong>2023</strong> and throughout the duration<br />

of the plan. Between now and 2030,<br />

it aims to raise the proportion of<br />

renewable energy as a share of<br />

SUEZ’s total electricity consumption<br />

to 70% worldwide and 100% in<br />

Europe, compared to the current<br />

average of 24% by harnessing its own<br />

In Cairo, SUEZ is<br />

making one of<br />

Africa’s largest<br />

wastewater<br />

treatment plants<br />

energy self-sufficient<br />

(Image: Grand Step<br />

Advertising)<br />

50 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


energy from waste activities, SUEZ<br />

will invest an extra €40m in its R&D<br />

programme dedicated to carbon<br />

capture and storage (CCS).<br />

the climate and social responsibility<br />

pillars, SUEZ is stepping up its<br />

initiatives in the field of biodiversity,<br />

with 10 specific commitments.<br />

Finally, the company is adapting<br />

top-priority and vulnerable sites<br />

operated to the effects of climate<br />

change, undertaking to cover 100% of<br />

its high-priority and vulnerable sites<br />

between now and 2027 through an<br />

established and funded action plan.<br />

On the social front, it aims to<br />

contribute to a responsible economy<br />

through employment and local<br />

development within communities,<br />

and encourage the development and<br />

engagement of its people through<br />

employee share ownership. Alongside<br />

A solid governance framework has<br />

been created through 43 performance<br />

indicators dedicated to monitoring<br />

the implementation of these<br />

commitments. All the indicators will<br />

be shared once a year to publicly<br />

communicate on the progress made<br />

by the group with respect to these<br />

commitments.<br />

Sabrina Soussan, chairman and<br />

CEO of SUEZ, said: “With this<br />

new roadmap, we are reaffirming<br />

the central role of sustainable<br />

development in the SUEZ strategy.<br />

SUEZ is setting out its pledges<br />

with a fresh new ambition around<br />

climate change policy and social<br />

responsibility, also including<br />

ambitious goals in terms of<br />

preservation of biodiversity and<br />

natural resources.”<br />

Rebond Insertion<br />

founded by SUEZ in<br />

2002, this partnership<br />

focuses on waste<br />

collection, delegated<br />

management and<br />

sorting services at<br />

13 sites in France<br />

(Image: SUEZ)<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 />

Highest level of cybersecurity<br />

Secure communication<br />

Alarms management<br />

learn mOre:<br />

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

www.lacroix-environment.com<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 51


TSURUMI AVANT: Submersible<br />

pumps and wastewater<br />

treatment equipment<br />

The Tsurumi AVANT brand has four different product line-ups which all apply<br />

similar design concepts, comprising submersible sewerage pumps and mixers.<br />

The pumps are classified into three series,<br />

including the MQ-series featuring an IE3 motor,<br />

the MY-series, and the compact MB-series.<br />

These pumps are available with discharge<br />

bores ranging from 40-600mm and motor<br />

output capacities from 0.37-355kW, and can be<br />

equipped with five different types of impellers<br />

including open channel, chopper, vortex, grinder<br />

or high head.<br />

The brand also features the MMR-series of<br />

submersible mixers equipped with an IE3<br />

motor. These mixers are available in propeller<br />

diameters from 200-650mm and motor<br />

output capacities from 0.75-7.5kW.<br />

1 2<br />

1 Series MQ, the<br />

submersible<br />

sewage pumps<br />

2 Series MY, the<br />

submersible<br />

sewage pumps<br />

3 MB-series is<br />

developed for<br />

heavy-duty<br />

performance and<br />

low-maintenance<br />

operation<br />

4 Mixers of MMRseries<br />

have a<br />

built-in IE3 motor<br />

Tsurumi design its products aimed at<br />

reducing maintenance costs in pump<br />

stations and wastewater treatment<br />

plants. The inclusion of IE3 motors is<br />

a way in which it is working to reduce<br />

overall energy consumption and<br />

contribute to a more sustainable<br />

future.<br />

3<br />

4<br />

Our products can reduce<br />

maintenance costs in pump<br />

stations and wastewater<br />

treatment plants, all while<br />

contributing to a more<br />

sustainable future.<br />

Bobby Ng<br />

General Manager of Tsurumi Avant.<br />

52 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>

SWA Chinese New Year luncheon<br />

17 Jan <strong>2023</strong>, Singapore Island Country Club<br />


OF THE<br />


WATER<br />







SWA management council ushered in the new spring with a<br />

Chinese New Year luncheon at Singapore Island Country Club.<br />

President Chew Men Leong gave an address about new work plans<br />

and initiatives and wished the council and staff a prosperous rabbit<br />

year.<br />

46th Singapore <strong>Water</strong><br />

Industry Nite<br />

Sponsored by DuPont <strong>Water</strong> Solutions Singapore<br />

2 Feb <strong>2023</strong>, e2i West Hall 1 and 2<br />

The 46th Singapore <strong>Water</strong> Industry Nite was held on 2 Feb <strong>2023</strong> at<br />

e2i West Hall 1 with a lo-hei session in conjunction with Chinese<br />

New Year. The networking dinner was sponsored by DuPont <strong>Water</strong><br />

Solutions Singapore. More than 130 guests from PUB, Singapore’s<br />

National <strong>Water</strong> Agency and SWA attended this event.<br />

President Chew gave a sharing on SWA’s intended alliance-foraction<br />

(AFA) plan for the water sector while PUB’s deputy director,<br />

Ryan Yuen, shared about the upcoming Singapore International<br />

<strong>Water</strong> Week (SIWW) spotlight <strong>2023</strong>. The event also introduced the<br />

new <strong>2023</strong>-2024 Young <strong>Water</strong> Professional committee.

[Technical site visit]: Keppel Marina<br />

East Desalination Plant (KMEDP)<br />

11 Jan <strong>2023</strong>, KMEDP<br />

Thirty SWA members visited the KMEDP. Jason Wong, head of<br />

KMEDP’s water plant and services, gave an overview on the<br />

energy-efficient direct coupling of ultrafiltration (UF) and reverse<br />

osmosis (RO) systems. Members gained insights about the new<br />

energy-efficient systems and technological equipment in this<br />

desalination plant.<br />

[Visit]: by the Government of<br />

Bangladesh and International Financial<br />

Corporation (IFC)<br />

13 Jan <strong>2023</strong>, Singapore <strong>Water</strong> Exchange (SgWX)<br />

To kick off <strong>2023</strong>, a four-team delegation from the Government of<br />

Bangladesh-Gazipur city corporation and IFC visited SgWX on 13<br />

Jan <strong>2023</strong>. This event was hosted by SWA council member, Steve<br />

Cheong and is supported by PUB. Delegates shared on Bangladesh’s<br />

water challenges, goals and bidding tender for its city’s upcoming<br />

sewage treatment plant (STP). The bidding will commence in Q3<br />

<strong>2023</strong>. In this session, delegates encouraged SWA’s participation in<br />

this bidding exercise.<br />

[Visit]: by the State Industries<br />

Promotion Corporation of Tamil Nadu<br />

(SIPCOT), India<br />

31 Jan <strong>2023</strong>, SgWX<br />

A team of 18 delegates led by SIPCOT and Singapore-India<br />

Partnership Office (SIPO) visited SgWX at PUB <strong>Water</strong>Hub on<br />

31 Jan <strong>2023</strong>. The visit is supported by PUB and hosted by SWA<br />

council member, Leela Krishna. Twenty-five SWA members<br />

attended this event. SIPCOT and the Chennai metropolitan water<br />

supply and sewerage board gave an update on their capability<br />

development initiatives, shared challenges, pain-points and the<br />

potential collaboration opportunities in the water sector with SWA<br />

members. The session was followed by a networking lunch with<br />

the delegates.

[Visit]: by the Saigon <strong>Water</strong> Corporation (SAWACO), Vietnam<br />

7 Feb <strong>2023</strong>, SgWX<br />

A delegation led by SAWACO, Ho Chi Minh City (HCM) visited<br />

SgWX on 7 Feb <strong>2023</strong>. SAWACO is a utility responsible for the water<br />

supply operations in HCM, with plans to embark on digitisation<br />

transformation to improve its business processes. They are<br />

planning for an intelligent water supply system to improve the<br />

quality of water service in HCM, thus establishing a network<br />

operation centre (NOC) is a priority for them.<br />

SWA council member Tse Yau Shing gave a welcome address and<br />

shared with guests about SWA and what it does for the water<br />

industry. SAWACO gave an update on its latest development<br />

initiatives and shared collaboration opportunities in the water<br />

sector with SWA members. The session was followed by a<br />

networking session with the delegates.<br />


[Complimentary webinar]: Bridging<br />

Austria and Singapore market with<br />

opportunities<br />

Co-organised with Austria embassy and companies<br />

15 Mar <strong>2023</strong>, Webex<br />

SWA and Austrian Commercial Trade Commissioner at the<br />

Austrian Embassy in Singapore are co-organising a complimentary<br />

webinar on 15 Mar <strong>2023</strong>, Wednesday, SGT 4pm-5:30pm. This<br />

event is supported by PUB. This webinar is designed to provide an<br />

overview of the importance of managing water and wastewater<br />

in various industries by learning about the advances in water and<br />

wastewater management. Hear from experts about successful<br />

wastewater management programmes and discover ways to<br />

improve companies’ wastewater management practices.


[Physical event]: BLUE Taichi Day<br />

12 Mar <strong>2023</strong>, 100 plus Promenade @Sports Hub<br />

In conjunction with Singapore<br />

World <strong>Water</strong> Day <strong>2023</strong>, SWA and<br />

PUB are co-organising a taichi<br />

workout event to raise awareness<br />

and support towards water<br />

sustainability.<br />

that can improve balance, flexibility,<br />

and overall physical and mental<br />

well-being. It is beneficial for older<br />

adults, people with chronic health<br />

conditions, and those with stressrelated<br />

health issues.<br />

Taichi is good for people of all ages<br />

and fitness levels, as it is a lowimpact<br />

and gentle form of exercise<br />

Remember to dress in blue that day<br />

to redeem a free goodie bag worth<br />

S$20.<br />

[Singapore Pavilion]:<br />

IE Expo China <strong>2023</strong> (IFAT China <strong>2023</strong>)<br />

19-21 Apr <strong>2023</strong>, Shanghai New International<br />

Expo Centre (SNIEC)<br />

This event focuses on circular economy<br />

and climate change with the arrival of<br />

the ‘double carbon era’ caused by the<br />

demand for green technologies supported<br />

by the Chinese government and global<br />

enterprises. For over 20 years, IE Expo China<br />

has offered a business and networking<br />

platform for Chinese and international<br />

professionals in the environmental<br />

sector for environmental technology and<br />

industrial innovation in <strong>Asia</strong>.<br />

For more information, contact:<br />

kenny@swa.org.sg.<br />


(joined from November 2022-January <strong>2023</strong>)<br />


1. Delta Marine Consultants Singapore Pte Ltd<br />


1. Accudyne Industries <strong>Asia</strong> Pte Ltd<br />

2. CTP Environment <strong>Asia</strong> Pacific Pte Ltd<br />

3. Atera <strong>Water</strong> Pte Ltd<br />


1. Lo Kar Lock<br />

2. Eileen Tan Chen Huey<br />

3. Brandon Lee Chuan Yee<br />

4. Shawn Seah<br />

<strong>2023</strong> EVENTS CALENDAR<br />

We look forward to your continuous support in <strong>2023</strong>. Download<br />

SWA events calendar at https://www.swa.org.sg/wp-content/<br />

uploads/2022/08/Events-Calendar-<strong>2023</strong>.V6.pdf.<br />

For further queries, please contact SWA at T: 65150812 or<br />

enquiry@swa.org.sg. To stay connected on the latest updates<br />

on SWA, visit https://www.swa.org.sg, follow us on LinkedIn,<br />

Facebook, Telegram and Instagram.<br />


SWA welcomes all organisations who are actively involved<br />

and interested in the water and wastewater industry to join<br />

Singapore <strong>Water</strong> Association as either Ordinary, Associate or<br />

Institutional member.<br />

Sign up at https://www.swa.org.sg/membership/sign-up-online.



makes touring easy<br />

German industrial machinery<br />

manufacturer Diehl Metering’s<br />

new IZAR RDC Motion is a radio<br />

receiver designed for walk-by or<br />

drive-by mobile readings, collecting<br />

data from meters, modules and<br />

sensors and transferring them to<br />

its software, IZAR@Mobile 2. An<br />

evolution of IZAR Receiver, its radio<br />

performance allows mobile readings<br />

to be carried out at speeds of up to<br />

50km/h, and offers high reception<br />

capacity even in dense urban areas,<br />

improving the efficiency of mobile<br />

readings.<br />

Once data is transferred to the<br />

IZAR@Mobile 2 software, meter<br />

read-outs are displayed on the<br />

map, alarms are listed and can be<br />

displayed with user-defined colour<br />

codes. Data is ready to be exported<br />

to IZAR Plus Portal / IZAR@Net<br />

software for further processing.<br />

This allows data collection from<br />

consumption meters, accurate<br />

billing with relevant data, and<br />

automation of some timeconsuming<br />

routines.<br />

IZAR RDC Motion<br />

IZAR RDC Motion also facilitates<br />

migration scenario of installations<br />

to C1 radio mode, without losing<br />

any data from meters operating in<br />

the T1 mode, due to its backward<br />

compatibility.<br />

As a radio receiver designed for walk-by or drive-by<br />

mobile meter reading, IZAR RDC executes a meter<br />

reading tour which received data is transmitted via<br />

Bluetooth to its software<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 57



for building services<br />

applications<br />

At this year’s ISH trade fair in Frankfurt<br />

on 13-17 Mar <strong>2023</strong>, German pump<br />

manufacturer company KSB is<br />

showcasing a new type series of fully<br />

integrated inline pump for non-drinking<br />

water and heating, ventilation, and<br />

air conditioning (HVAC) applications.<br />

When developing EtaLine Pro type<br />

series, the developers focused on<br />

extremely low energy consumption<br />

and the economical use of materials.<br />

By using a hydraulic system designed<br />

for high speeds, the developers<br />

achieved a compact design. With<br />

increased output per size, the new<br />

pumps require up to 44% less<br />

aluminium, 49% less grey cast iron<br />

and 68% less magnetic steel sheet,<br />

and 73% less copper, compared to<br />

conventional units.<br />

The magnets used in the motors<br />

are classic ferrite magnets, so they<br />

do not contain any rare earths,<br />

which cause environmental damage<br />

when extracted. The motor rating<br />

ranges from 0.8-2.6kW. With their<br />

voltage range of 380-480 volts at<br />

50/60Hz, the pump sets can be used<br />

worldwide. The international product<br />

certifications such as CE, UKCA and<br />

UR/UL also contribute to this.<br />

The new units offer planning reliability<br />

as they have several pump functions,<br />

such as dynamic control, sensor-less<br />

control and multiple pump operation,<br />

as well as heat quantity measurement.<br />

These intelligent functions allow<br />

adjustments to be made to the<br />

operation or operating points even<br />

after the pumps have been installed.<br />

The pumps adjust their flow rate<br />

and head based on an algorithm,<br />

moving the operating point along a<br />

programmed control curve. Due to<br />

various digital interfaces, integration<br />

into modern building management<br />

systems is possible.<br />

With only five hydraulic system sizes,<br />

the quiet operating close-coupled<br />

pumps cover a broad selection range.<br />

Their maximum flow rate is 63.6m 3 /hr<br />

with the maximum discharge head<br />

possible being 42.9m. Standardised<br />

mechanical seals and a reduced variety<br />

of components, combined with an<br />

extensive global service network, can<br />

ensure rapid availability of spare parts<br />

when needed.<br />

The pumps and the mechanical seals<br />

are designed for operating pressures<br />

up to 16 bar. As standard, the pumps<br />

are fitted with mechanical seals<br />

selected for a maximum operating<br />

temperature of 120°C, depending on<br />

the application and the fluid handled. A<br />

cathodic e-coating of the cast casings<br />

provide corrosion protection.<br />

The new EtaLine<br />

Pro series, fully<br />

developed integrated<br />

in-line water pumps<br />

58 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>





improve efficiency<br />

in water utility<br />

applications<br />

Rosemount 1208 Level and Flow<br />

Transmitter Series reportedly<br />

surpass ease-of-use and<br />

measurement performance of<br />

ultrasonic and hydrostatic devices<br />

Emerson has introduced the Rosemount<br />

1208 Level and Flow Transmitter Series<br />

non-contacting radar transmitters to help<br />

increase the operational efficiency of<br />

water, wastewater and process industry<br />

utility applications. The performance of<br />

the 1208 Series reportedly surpasses that<br />

of ultrasonic and hydrostatic devices by<br />

delivering accurate level and open channel<br />

flow measurements, enabling organisations<br />

to increase the efficiency of operations and<br />

achieve environmental compliance.<br />

Operators in the water and wastewater, food<br />

and beverage, chemical and other process<br />

industries often deploy ultrasonic and<br />

hydrostatic devices for water monitoring<br />

applications when radar transmitters<br />

are considered too expensive, bulky or<br />

complex. The Rosemount 1208 is a new<br />

alternative, featuring 80GHz fast-sweep<br />

frequency modulated continuous wave<br />

(FMCW) technology on a single electronic<br />

chip, which delivers reliable measurement<br />

within a compact and cost-effective device<br />

ideal for applications with space constraints<br />

or compliance requirements, such as water<br />

applications.<br />

According to Emerson, unlike ultrasonic<br />

and hydrostatic devices, the measurement<br />

accuracy and reliability of the Rosemount 1208<br />

line is unaffected by most process conditions,<br />

including condensation and variations in<br />

pressure, temperature and density. By using<br />

fast-sweep FMCW technology and advanced<br />

algorithms, the new transmitter family can<br />

collect up to 40 times more information than<br />

legacy radar devices. This provides level<br />

measurement accuracy of ±0.08in (2mm) at a<br />

range of 15m, helping organisations optimise<br />

processes and comply with environmental<br />

requirements. In addition, the non-contacting<br />

design has no moving parts or calibration<br />

requirements, creating a maintenance-free<br />

device that minimises manual procedures and<br />

delivers long-term performance and reliability.<br />

The transmitter is available in two models,<br />

offering different communication protocols<br />

and approvals. The Rosemount 1208A is the<br />

first radar transmitter, as claimed by Emerson,<br />

designed for water and process industry utility<br />

applications to offer IO-Link connectivity<br />

as part of its hybrid communication options<br />

that also include three-wire 4-20mA and<br />

switch outputs. IO-Link connectivity reduces<br />

installation complexity, enables simple<br />

integration into high-level automation<br />

networks, and provides access to process<br />

insights that can enhance operational<br />

performance. It further reduces complexity by<br />

enabling remote configuration and monitoring.<br />

The Rosemount 1208C offers two-wire<br />

4-20mA and HART communication options,<br />

providing access to advanced diagnostics.<br />

This supports predictive maintenance and<br />

more effective troubleshooting, leading to<br />

reduced downtime and improved operational<br />

efficiency. Hazardous area approval<br />

enables use in areas where an explosive<br />

gas atmosphere could occur during normal<br />

operation.<br />

Felix Johansson, associate solutions manager<br />

for Emerson’s radar level business, said,<br />

“Emerson’s advanced radar technology is<br />

simple to order, install, operate and maintain.<br />

Designed for these applications, it provides<br />

a step-change increase in measurement<br />

performance and process visibility to help<br />

operators maximise the potential of their<br />

plant.”<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 59




fixed network leakage service<br />

With all elements<br />

combined, the<br />

service can<br />

accurately identify<br />

POIs on behalf of<br />

water companies<br />

A new end-to-end leakage reduction<br />

service has been launched by<br />

technology company Ovarro, as the<br />

water sector moves forward with wider<br />

implementation of as-a-service models<br />

to improve efficiency.<br />

LeakNavigator is the UK’s first fully<br />

managed, fixed network leakage service<br />

that can identify points of interest (POIs)<br />

on behalf of water companies. The<br />

leak-locating model comprises<br />

advanced acoustic data loggers,<br />

cutting-edge cloud-based software and<br />

Ovarro’s inhouse leakage expertise.<br />

The service can also alert field<br />

technicians directly, so they can head<br />

straight to site with high confidence<br />

that a leak will be found, thereby<br />

reducing the need for inhouse data<br />

analysis.<br />

LeakNavigator has undergone<br />

successful trials with UK water<br />

companies, recording a combined<br />

performance increase of 20-25% in<br />

total leaks found, plus a 30% reduction<br />

in lost field time through false positives<br />

and a POI-to-leak conversion rate of<br />

over 85%.<br />

As-a-service models are subscriptionbased<br />

applications, with infrastructure<br />

that is entirely managed and<br />

maintained by an external supplier.<br />

These services allow companies to<br />

focus on their core responsibility of<br />

water system management and leave<br />

the data analysis to external specialists.<br />

Matthew Hawkridge, Ovarro’s CTO,<br />

presented LeakNavigator at world<br />

water-tech innovation summit in<br />

London, UK, on 21-22 Feb <strong>2023</strong>.<br />

He said, “Regulators and customers are<br />

continuing to push water companies<br />

to cut leakage and their expectations<br />

will only increase. While acoustic fixed<br />

networks — which are permanently in<br />

place to pinpoint leaks by monitoring<br />

the sound of water escaping from pipes<br />

— are bringing major improvements,<br />

60 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>


the sector has at times struggled with<br />

the correct placement of acoustic<br />

loggers.<br />

The service can also<br />

apply to existing<br />

Enigma logger fleets<br />

already installed<br />

“For remote loggers to achieve the best<br />

possible results, they need to be placed<br />

in optimum locations across a network.<br />

But establishing precisely where these<br />

spots are is no easy task and requires<br />

specialist expertise.<br />

“If loggers are not placed appropriately,<br />

location data could be compromised<br />

and water company analysts have an<br />

even harder job of pinpointing leaks.<br />

This means leak detection teams could<br />

be spending valuable time and money<br />

trying to identify leaks in the wrong<br />

place.”<br />

Ben Crabtree, Ovarro’s product<br />

line director for analytics, added,<br />

“LeakNavigator solves this challenge<br />

by taking complete ownership of<br />

the data analysis and leak detection<br />

process, working in collaboration with<br />

water companies, with results-driven<br />

accountability.<br />

“This consultative approach is already<br />

enhancing performance of acoustic<br />

fixed networks, including high accuracy<br />

POIs, high operability and good<br />

conversion rates. These outcomes are<br />

allowing leakage teams to focus their<br />

attention on fixing, not monitoring, the<br />

problem, which will help them achieve<br />

their leakage targets and ultimately<br />

secure future water supplies.”<br />

The LeakNavigator package uses<br />

acoustic loggers from the Enigma<br />

range, which are installed following<br />

an assessment of a water company’s<br />

district metered area (DMA),<br />

undertaken by Ovarro’s leakage<br />

analysts. This process establishes<br />

suitable equipment to install, the unit<br />

numbers required and the locations for<br />

optimum efficiency.<br />

Once the loggers are in operation,<br />

Ovarro’s teams undertake ongoing<br />

data analysis, sending POIs directly<br />

to water company field technicians<br />

via a mobile app. The captured data,<br />

which also supports maintenance<br />

targeting, is processed and presented<br />

to customers in a dashboard.<br />

Smart approaches to leakage<br />

detection are expected by regulator<br />

Ofwat, which said in its price review<br />

2024 (PR24) final methodology,<br />

published on 13 Dec 2022: “Innovation<br />

will be key. On leakage, for example,<br />

companies will be rewarded if they can<br />

set and deliver aggressive reductions.<br />

We expect companies to embrace the<br />

opportunities to improve performance<br />

through smart technology and better<br />

use of data.”<br />

Hawkridge said: “As-a-service models<br />

are now being embraced by the water<br />

sector, with companies finally moving<br />

away from legacy systems. Allowing<br />

specialists to take the lead enables<br />

water companies to focus attention<br />

on their customer, shareholders and<br />

regulator commitments far more<br />

effectively.”<br />

Ovarro’s CTO,<br />

Matthew Hawkridge<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 61




<strong>Water</strong> Philippines <strong>2023</strong><br />

<strong>Water</strong> Philippines is an international water supply, sanitation, industrial<br />

wastewater treatment, and purification event. After its two-year hiatus, the<br />

Philippines’ water technology B2B event is set to take its comeback on 22-24 Mar<br />

<strong>2023</strong> at SMX Convention Centre, Pasay city, Metro Manila, Philippines.<br />

The conference will hold discussions with water industry professionals about water<br />

challenges and solutions in the Philippines and across South East <strong>Asia</strong><br />

<strong>Water</strong> Philippines gives a platform for greater cooperation between the<br />

Philippines and the international water community<br />

Now in its sixth edition, the event<br />

aims to bring water and wastewater<br />

industry professionals and<br />

specialists in one venue to discuss<br />

the emerging concerns of all sectors<br />

of the water industry. With over 300<br />

exhibiting brands and companies<br />

from seven participating countries,<br />

<strong>Water</strong> Philippines is expected to<br />

gather over 10,000 trade visitors<br />

from 36 different countries within the<br />

three-day event, co-locating with<br />

PhilEnergy. Both events will highlight<br />

water and energy technologies,<br />

innovations, and solutions in an<br />

expanded four-hall exhibition area.<br />

This serves as a business platform for<br />

trade professionals, decision-makers,<br />

business owners, and government<br />

representatives from different parts of<br />

the globe to network, discuss solutions<br />

and create business opportunities.<br />

<strong>Water</strong> Philippines is supported by<br />

Philippine <strong>Water</strong> Works (PWWA),<br />

the Philippine Society of Sanitary<br />

Engineers (PSSE), and the<br />

Philippine Integrated Society of<br />

Master Plumbers (PISMAP). PWWA<br />

conference will cover the theme of<br />

‘Overcoming Global Challenges<br />

in <strong>Water</strong> and <strong>Wastewater</strong>’, with<br />

the goal of strengthening water<br />

security in the Philippines. More<br />

than 50 technical seminars from<br />

these exhibiting companies will<br />

showcase presentations on<br />

their products, technologies and<br />

innovation.<br />

62 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>



<strong>2023</strong><br />

MARCH<br />

21 – 23 Mar<br />

<strong>Water</strong> Korea <strong>2023</strong><br />

Seoul, South Korea<br />

22 – 24 Mar<br />

<strong>Water</strong> Philippines<br />

Manila, Philippines<br />

APRIL<br />

18 – 20 Apr<br />

WQA Convention & Exposition<br />

Las Vegas, USA<br />

19 – 21 Apr<br />

IE Expo<br />

Shanghai, China<br />

MAY<br />

8 – 10 May<br />

Global <strong>Water</strong> Summit<br />

Berlin, Germany<br />

10 – 12 May<br />

Oz<strong>Water</strong><br />

Sydney, Australia<br />

JUNE<br />

4 – 6 Jun<br />

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

Week (SIWW) Spotlight <strong>2023</strong><br />

Singapore<br />

5 – 7 Jun<br />

Aquatech China<br />

Shanghai, China<br />

28 – 30 Jun<br />

IE Expo Chengdu<br />

Chengdu, China<br />

JULY<br />

5 – 7 Jul<br />

Indo<strong>Water</strong> Expo & Forum<br />

Jakarta, Indonesia<br />

AUGUST<br />

30 Aug – 1 Sep<br />

Thai<strong>Water</strong><br />

Bangkok, Thailand<br />

30 Aug – 1 Sep<br />

Pumps & Valves <strong>Asia</strong><br />

Bangkok, Thailand<br />


14 – 16 Sep<br />

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

Binh Duong, Vietnam<br />


11 – 13 Oct<br />

Viet<strong>Water</strong><br />

Ho Chi Minh, Vietnam<br />


14 – 16 Nov<br />

Enlit <strong>Asia</strong><br />

Jakarta, Indonesia<br />

2024<br />


25 – 28 Jan<br />

WWETT<br />

Indiana, USA<br />

31 Jan - 2 Feb<br />

Interaqua 2024<br />

Tokyo, Japan<br />


20 – 21 Feb<br />

World <strong>Water</strong>-Tech Innovation<br />

Summit<br />

London, UK<br />

APRIL<br />

16 – 18 Apr<br />

World Future Energy Summit<br />

Abu Dhabi, UAE<br />

MAY<br />

13 – 17 May<br />

IFAT Munich<br />

Munich, Germany<br />

18 – 24 May<br />

10th World <strong>Water</strong> Forum<br />

Bali, Indonesia<br />

JUNE<br />

10 – 14 Jun<br />

ACHEMA<br />

Frankfurt, Germany<br />

18 – 22 Jun<br />

SIWW<br />

Singapore<br />

WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong> 63




PAGE<br />

CLA-VAL 9<br />



OBC<br />


INDOWATER <strong>2023</strong> 27<br />


SEKO UK LTD 1<br />



IBC<br />



IFC<br />



@waterwastewaterasia<br />

64 WATER & WASTEWATER ASIA | MARCH/APRIL <strong>2023</strong>

VEGA Instruments (SEA) Pte Ltd<br />

25 International Business Park<br />

#04-52 German Centre, Singapore 609916<br />

Tel: +65 65640531 Fax: +65 65675213<br />

email: sales.sg@vega.com Website: https://www.vega.com/en-sg

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