Water & Wastewater Asia May/Jun 2021

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NEWS PUB COMMENCES DEVELOPMENT OF COASTAL-INLAND FLOOD MODEL PUB, Singapore’s national water agency, has begun work on a state-of-the-art modelling system that is capable of simulating and evaluating both inland and coastal flood risks in tandem. This Coastal-Inland Flood Model will enable PUB to better assess the impact of climate change on Singapore’s coastal areas. A consortium led by the National University of Singapore (NUS), with water management solutions provider Hydroinformatics Institute (H2i) as a partner, has been appointed to develop the model to support PUB’s coastal protection efforts. The purpose-built model will be developed based on Singapore’s densely built-up and urbanised environment, and will enable holistic flood risk assessment by estimating the combined effects of extreme sea levels and inland floods caused by intense rainfall. It will comprise two independent models – a coastal model and an inland model – that can run separately or together to carry out flood risk analysis for different scenarios. The model will aid PUB in the planning of coastal adaptation measures, to evaluate the effectiveness of proposed coastal protection infrastructure, as well as for operations management. Development will take about four years and be continually updated and improved along with new climate data and developments in climate science. In the near term, the model will also be able to support the upcoming site-specific studies, starting with the City-East Coast and Jurong island. The coastal model will be equipped to simulate potential changes in nearshore waves and storm surge activities within the region under different climate change scenarios, while the inland model will be capable of simulating urban flooding caused by different sources, including heavy rainfall, and their interactions with sea levels. Advanced modelling techniques will be used to enhance the accuracy and speed in simulating rainfallinduced flows within Singapore’s densely built-up water catchments. PUB officers will work closely with the team from NUS and H2i during the entire project duration, to share their experience with existing modelling systems. This will also allow PUB to build new expertise in-house to develop, test and validate coastal protection technologies and concepts. The project team will be led by Philip Liu, distinguished professor in the NUS Department of Civil and Environmental Engineering. Prof Liu, who is internationally recognised for his work on coastal engineering and wave modelling, has been instrumental in developing tsunami and coastal disaster resilience technology in Taiwan and the South China Sea region. H2i will bring to the table its rich expertise in hydrological and inland flow modelling and model development, having worked with PUB previously on its rainfall monitoring and predicting system, which uses X-band radar technology. Ms Hazel Khoo, director of PUB’s Coastal Protection Department, said, “As a small coastal city with many low-lying areas, Singapore is particularly susceptible to rising sea levels. Coupled with the upward trend of average annual rainfall and frequency of heavy rainfall that we have observed in recent years, the development of this model is timely as we embark on the monumental task of building coastal defences for Singapore. Through this project, we aim to enhance capabilities and deepen our expertise in modelling to support coastal protection efforts from now and into the future. Given the uncertainties in climate science, protecting our coastlines will always be a work-in-progress, but we aim to stay ahead of the curve.” Prof Liu, added, “In anticipating continued climate changes, the development of a Coastal-Inland Flood Model is timely and will help to safeguard both our coastlines and our collective future against severe weather and rising sea levels.” H2i’s Director Martin Lechner, said, “H2i has, through our various projects, developed a depth and breadth of understanding of the impact that climate change could have on both lives and livelihoods in Singapore. We have already deployed our capabilities in areas like coastal monitoring and modelling and flood-risk management, and the development of the Coastal-Inland Flood Model builds on this. The combined expertise of our team, which includes renowned industry leaders like hydraulics specialist Prof Guus Stelling, will mean faster, more accurate and more visual water management insights. This will allow Singapore to better plan for climate change, and secure its own future.” 10
WATER & WASTEWATER ASIA | MAY/JUNE 2021 FLUENCE RECEIVES KEY ORDERS FROM CHINA AND SOUTH EAST ASIA FLUENCE SECURES FIRST VOLUME ORDER FROM THREE GORGES Fluence Corporation Limited has been awarded its first volume contract for the Yangtze River Great Protection Program managed by China Three Gorges Group Corporation (“Three Gorges”). The orders with Three Gorges are worth an aggregate of US$2.2m and involve a total of 29 Aspiral MABR (membrane aerated biofilm reactor) units. Fluence will work with its existing volume partner, Aerospace Kaitian Environmental Protection Technology Co., Ltd.(“Kaitian”), as well as Yangtze River Ecological Environmental Protection Group Co., Ltd., a subsidiary of Three Gorges, to implement treatment systems in 14 towns and rural townships in Ningyuan and Dao counties, Hunan province. CHINA RAIL ORDER – FIRST IN CHINA FOR WASTEWATER REUSE The company has been awarded an additional contract by Beijing China Railway Science New Technology Co. Ltd., wholly owned by China Academy of Railway Sciences Cooperation Limited (“China Rail”). The contract is worth US$28K for two Aspiral Micro units to treat and reuse wastewater at sites including Beijing. This is the first wastewater reuse project for Fluence in China. Wastewater reuse is a key part of the current Five-Year Plan. Aspiral Micro was chosen on account of its ability to treat wastewater to the high quality needed for reuse for irrigation, operate remotely, and can be deployed and commissioned rapidly. FLUENCE SECURES FIRST MULTI- UNIT NIROBOXTM ORDER IN TAIWAN Finally, Fluence is pleased to announce that it has been awarded a US$2.4m contract to supply three NIROBOXTM units to drought-stricken Taiwan. Fluence was able to leverage a proven product and quick turnaround time to secure the order. Commissioning is expected in May 2021. The units will be installed in Taichung and will convert seawater into enough fresh water to meet the needs of up to 30,000 people in central Taiwan. Fluence partner ADE Corporation facilitated the order from the Water Resources Agency, which is part of the Ministry of Economic Affairs of Taiwan. FOLLOW US @waterwastewaterasia 11
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ON OUR RADAR KSB AUSTRALIA INVESTS
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Water & Wastewater Asia May/Jun 2021

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