Water & Wastewater Asia November/December 2022

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NEWS XYLEM SINGAPORE AND GROSS-WEN TECHNOLOGIES TO COLLABORATE ON BOOSTING SUSTAINABILITY AND EFFICIENCY OF ALGAE-BASED WASTEWATER TREATMENT TECH process to help Singapore and water utilities achieve net zero emissions.” Gross said: “Our partnership with Xylem in Singapore is an exciting step forward in the global deployment of GWT’s RAB treatment technology. Our R&D project with PUB will serve as a showcase for how algae treatment can be leveraged to decarbonise the wastewater treatment industry.” The project was one of the Proposal Phase winners of PUB’s Carbon Zero Grand Challenge, which seeks to incentivise innovative solutions that can help PUB achieve net-zero emissions by 2050 and scale to water facilities around the globe. If successful in the proof-of- GWT’s algae-based treatment uses algae to capture atmospheric CO2 and will be later used to make various sustainable products like fertilisers, bioplastics and biofuels (Image: Gross-Wen Technologies) Xylem Water Solutions Singapore and Gross-Wen Technologies (GWT) have announced a memorandum of understanding (MoU) for a new joint R&D project to deploy algae-based wastewater treatment solutions in Singapore. The project will focus on the development of GWT’s existing revolving algal biofilm (RAB) technology, an algae-based wastewater treatment solution that promotes nutrient recovery while reducing the carbon footprint of water utilities. The project will feature GWT’s algaebased treatment of anaerobic digestor (AD) effluent for carbon footprint reduction and nutrient recovery. This includes atmospheric CO2 capture by algae, low-energy nitrogen and phosphorus recovery, and reduced nitrous oxide emissions from the concentrated AD effluent. The algae produced during the process will be harvested and used to make fertilisers, bioplastics and biofuels. As part of the project, the R&D team led by Luo Rongmo, senior development engineer at Xylem Singapore Technology Hub, and Martin Gross, president and CEO of GWT, was awarded up to S$247,000 to implement a small-scale RAB system at Xylem’s Singapore facility during the proof-of-concept phase of the Carbon Zero Grand Challenge. If successful, this will be piloted in a full-scale system for PUB, Singapore’s National Water Agency. Luo said: “We are pleased to be partnering with Gross-Wen Technologies and combining our strengths in the industry to develop a sustainable wastewater treatment concept phase, Xylem Singapore could be awarded a further $2.5m to demonstrate an approximate one kilotonne-scale version of their solution at a PUB facility in Singapore. If the small-scale RAB system at Xylem Singapore’s facility is successful, it will be launched for a full system pilot for PUB (Image: Gross-Wen Technologies) 6 WATER & WASTEWATER ASIA | NOVEMBER/DECEMBER 2022
NEWS NX FILTRATION TO BE PART OF ACCIONA- LED INITIATIVE TO ELIMINATE EMERGING POLLUTANTS FROM WATER SOURCES NX Filtration, a provider of direct water nanofiltration technology, has announced its participation in the European innovation project LIFE PRISTINE. The project’s objective is to eliminate emerging contaminants in the integral water cycle, which is one measure to promote alternative water resources in the face of water scarcity. The LIFE PRISTINE project has a budget of €4m and is coordinated by Acciona, the Spanish sustainable infrastructure solutions group. Other project partners include Eurecat, Xylem Services, the Regional Entity for Wastewater Sanitation and Treatment of the Murcia Region (ESAMUR) and the water utility provider Bilbao Bizkaia Water Consortium (CABB). The project hopes to combine water treatment processes, such as NX Filtration’s hollow fibre nanofiltration membranes, with artificial intelligence (AI)-based digital tools to develop a solution that removes the emerging pollutants. The project was launched in light of various forums being alerted to the urgent need to take steps in protecting water resources. Such an outcome can be achieved through reducing water consumption, but also by promoting alternative resources and reuse. One key issue that has been raised in efforts to encourage water reuse is the presence of pollutants and microplastics in water supplies. These substances of anthropogenic origin are difficult to eliminate when using existing treatment systems and they may end up in seas and rivers, or even enter the food chain. Their presence may create hazards. There is thus an increasing emphasis on regulating the use of these substances and developing solutions to remove them from the environment. LIFE PRISTINE thus aims to eliminate up to 80% of emerging pollutants in the endto-end water cycle, particularly per and polyfluoroalkyl (PFAS) substances. These are typically found in flame retardants, pesticides, pharmaceutical and personal care products, toxins microplastics and genes of microorganisms that are resistant to antibiotics. The project aims to strengthen the existing legislation and promote the reuse of water with the highest possible quality and safety standards. The PRISTINE solution involves the processes of adsorption, nanofiltration and advanced oxidation using virtual sensors, process modelling and decision-making support tools. The machine is said to be capable of reducing emerging pollutants from water sources and wastewater effluent. The PRISTINE project is set to be demonstrated in a representative operating environment: namely, the secondary effluent of a treatment plant in Murcia, Spain, and supporting drinking water pre-treatment in the Bilbao Bizkaia Advanced Water Treatment Centre (CATABB). WAVIN ACQUIRES DUTCH START-UP METROPOLDER Wavin has acquired Dutch start-up MetroPolder, against the backdrop of increasingly extreme weather events and long periods of drought that have been affecting the liveability of cities around the world. With the acquisition, Wavin is expected to incorporate MetroPolder’s knowledge to close the water cycle in cities and make cities “future-proof”. MetroPolder has developed a technology to capture water on roofs and reuse it for cooling, irrigation and recycling. The bluegreen roofs are equipped with a buffer system, an internet-connected valve and an online dashboard. The valves sensors and rain radars control the water level and discharge real-time. This smart connection enables dynamic water storage. The technology has been implemented in projects over several locations worldwide, including the Netherlands, Guatemala, France the UK and US. Friso Klapwijk, CEO of MetroPolder said: “Wavin sees rainwater as a resource, not a problem. That’s where we found each other. We want to make cities future-proof, by applying smart water management. Think of reusing rainwater for for cooling cities to combat heat stress. We are pleased and proud to be part of the Wavin family from now on.” Maarten Roef, CEO of Wavin, said: “The green/blue roof solution of MetroPolder is a proven successful, international, application that puts Wavin as a company in an even better position to make cities more climate resilient. Supplemented with the knowledge and expertise of MetroPolder, we are convinced that we will succeed in getting more and more cities to look at the applications of water differently. Because the opportunities are plentiful.” WATER & WASTEWATER ASIA | NOVEMBER/DECEMBER 2022 7
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SWA WELCOMES NEW MEMBERS (joined fr
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ON OUR RADAR ENERGY RECOVERY LAUNCH
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ON OUR RADAR THE SMART RTU dedicate
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SNEAK PEEK INDO WATER EXPO & FORUM
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ADVERTISERS’ INDEX INDEX OF ADVER
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Water & Wastewater Asia November/December 2022

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