Water & Wastewater Asia July/August 2022

More documents

Recommendations

Info

IN CONVERSATION WITH EMPOWERING TODAY’S WATERWORKS for a more sustainable tomorrow Water is at the core of sustainable development and utilities worldwide have been innovating to ensure a sustainable water supply is still available for future consumption. Clément Pierart, COO for PWNT, part of Nijhuis Saur Industries, shares more with Water & Wastewater Asia. Whilst we are trying to be greener and use less chemicals and energy, the rate of progression in this direction is not enough. And with the rise in population and the overall increase of human activities around the globe, it’s a very difficult race to win and we will probably need to start looking far more aggressively also on carbon capture beyond carbon reduction. Clément Pierart COO for PWNT, part of Nijhuis Saur Industries At the north of Plymouth in southwest England lies South West Water’s Mayflower Water Treatment Works, a £60 million (US$74 million) state-of-the-art that is now responsible to supply drinking water to a quarter of a million people in the Plymouth area. Mayflower marks South West Water’s biggest single capital investment in its 2015-20 business plan and has gone into service in the spring of 2020, taking over the old treatment works at Crownhill which has been serving the city since the 1950s. Mayflower is designed to treat up to 90 MLD of water a day, from sources including the Burrator reservoir, the River Tavy and the River Tamar. Supporting the water treatment processes behind Mayflower was PWNT, which supplied three of its flagship technologies – namely SIX, a suspended ion exchange process with a resin regeneration system; In-Line Coagulation and Adsorption (ILCA) to minimise coagulation and flocculation footprint while simplifying pre-treatment upstream of CeraMac; and the CeraMac ceramic membrane filtration system. 14 WATER & WASTEWATER ASIA | JULY/AUGUST 2022
IN CONVERSATION WITH The three technologies are combined together for the first time and demonstrate how innovation can bring higher quality drinking water to the population, declared Clément Pierart, COO for PWNT, part of Nijhuis Saur Industries. He told Water & Wastewater Asia: “Mayflower receives feed from various reservoirs and rivers, which is blended in various proportions and is then collected into an inlet reservoir through the filters. The water then goes through SIX for the removal of dissolved organic carbon, followed by an atmospheric ILCA for some light coagulation before being brought onto the CeraMac vessels. “For this Mayflower project, we supplied 10 CeraMac vessels in the C-90 model configuration to meet the total capacity of 90 MLD. It has been in operation for two years now and has been producing clean and safe drinking water consistently without any major issues.” Another user of PWNT’s CeraMac is PUB, Singapore’s national water agency. The ceramic membrane technology was installed at the Choa Chu Kang Waterworks (CCKWW) and is the first waterworks in the republic to employ such technology to increase the plant’s operating efficiency and reliability. Dubbed the largest ceramic membrane filtration plant for drinking water treatment in the world, CCKWW is equipped with 12 CeraMac vessels to manage the plant’s capacity of 180 MLD. Particularly for CCKWW, the plant treats a reservoir supply and uses ozone oxidation on the membranes as part of the treatment train. The continuous dosing of ozone allows the plant to reach a much higher flux. Commenting on both projects, Pierart highlighted the priorities of both plants appear to be evaluating and evolving in the same direction. The carbon footprint for the overall impact of the systems, performance and the long-term cost, and the total cost of ownership and operation of the plant – these are some of the common concerns among the plant operators which he identified and elaborated: “I think it’s also related to the market that we target because, inherently, the ceramic solutions are more expensive than the polymeric or the sand filters on a Capex basis. “Hence, most of the customers we spoke to are utilities that are already focusing on a more long-term vision and they are already looking at more than just the Capex but also the Totex of their plant and their impact on their community in the future. In places which are still purely Capex driven, the concept of sustainability is yet to be fully embraced but for places where sustainability is a driver, the total cost of ownership – both the financial costs for human and resources – will become a driver.” WATER SECURITY Climate change is a threat that has direct consequences on achieving water security. Not only will there be more extreme weather events but water, a necessity for life, will arguably be more scarce and less available as the changing weather patterns impact the quantity and quality of water. For PWNT’s customers in the UK, droughts have not been “too much of an issue”, according to Pierart, and the abundance of surface water is still available. That said, he cited the increase in human activities as the source of polluted water as people have injected waste back into the streams. “The management of both the ability to treat more difficult drinking water but also improve the cleanliness of the water that we inject as waste is what will drive the dynamics in some environments. For other places that are more water-stressed and where there is a scarcity, we see other behaviours,” he explained. “We have some opportunities that we’re discussing in the US, for example, for aquifer replenishment. Instead of producing water similar to the level of high-quality drinking water, we are stopping a few steps before but re-injecting directly into the aquifers.” And with less than a decade left to meet the 2030 Agenda for Sustainable Development Goals set out by the United Nations, Pierart noted that the water industry has made “good progress” but is unconvinced that they will manage to achieve all the goals. Nonetheless, the drive for improvements has been reflected in some of the discussions and papers that are being exchanged during events and summits like the COP26 and the Singapore International Water Week (SIWW) 2022. He concluded: “There is a concern within the community that whilst we are progressing towards those objectives, we are not progressing fast enough. Those words were echoed by Minister Grace Fu during the inaugural speech at SIWW2022 when she said that Singapore has made some progress but due to the pandemic and other reasons, the progress has not been as much as the government expected. “Whilst we are trying to be greener and use less chemicals and energy, the rate of progression in this direction is not enough. And with the rise in population and the overall increase of human activities around the globe, it’s a very difficult race to win and we will probably need to start looking far more aggressively also on carbon capture beyond carbon reduction.” WATER & WASTEWATER ASIA | JULY/AUGUST 2022 15
Page 1: JULY / AUGUST 2022 www.waterwastewa
Page 6 and 7: FROM THE EDITOR ALL ENDS WELL Water
Page 8 and 9: NEWS ENERGY RECOVERY WINS OVER US$8
Page 10 and 11: NEWS DUPONT WATER SOLUTIONS EXPANDS
Page 12 and 13: SINGAPORE FOCUS EVENT-TRIGGERED PIP
Page 14: SINGAPORE FOCUS XX = 1 ⋮ 1 xx !!
Page 19 and 20: IN CONVERSATION WITH THE TSURUMI AV
Page 21 and 22: IN CONVERSATION WITH There has been
Page 23 and 24: IN CONVERSATION WITH The RSK Centre
Page 25 and 26: ENVIRONMENTAL REPORT by flooding an
Page 27 and 28: IN THE FIELD Companhia Águas de Jo
Page 29 and 30: IN THE FIELD NEW TREATMENT PLANT AL
Page 31 and 32: IN THE FIELD removed from the surfa
Page 33 and 34: FOCUS three regional delivery conso
Page 35 and 36: LET US DEVELOP, MARKET AND MANAGE Y
Page 37 and 38: FOCUS EchoShore-TX transmission mai
Page 39 and 40: FOCUS fieldwork monitoring. The sol
Page 41 and 42: FOCUS Made of painted high-strength
Page 43 and 44: FOCUS Numerous wastewater chemical
Page 45 and 46: FOCUS rainwater, we try to get rid
Page 47 and 48: HOTSEAT services of conservation, m
Page 49 and 50: HOTSEAT greatly. Pumping coal slurr
Page 51 and 52: HOTSEAT LOOKING FOR and finding pro
Page 53 and 54: NEWSLETTER OF THE SINGAPORE WATER A
Page 55 and 56: UPCOMING SWA ACTIVITIES SWA Water U
Page 57 and 58: ON OUR RADAR DE NORA UNVEILS SOLUTI
Page 59 and 60: ON OUR RADAR OVARRO POLLUTION EARLY
Page 61 and 62: ON OUR RADAR SAMOTICS REDUCES INDUS
Page 63 and 64: SHOW REVIEW Vijaykumar Subramaniam,
Page 65 and 66:
WHAT’S NEXT EVENT CALENDAR 2022 A
Page 68:
Water Solutions Solving global chal
show all

Water & Wastewater Asia July/August 2022

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?