18 jan 2021

Royal HaskoningDHV is pleased to announce it has been awarded a 100,000 m3/day wastewater treatment project in Hong Kong. The Yuen Long Effluent Polishing Plant (YLEPP) will use award-winning Nereda® aerobic granular sludge technology to biologically treat wastewater. It will be the first Nereda wastewater treatment plant on this scale in Asia.

The award is part of a wider project, in which main contractor Paul Y-CREC Joint Venture will redevelop the existing Yuen Long Sewage Treatment Plant into a 100,000 m3/day Effluent Polishing Plant, with a further 80,000 m3/day expansion planned for the future. The plant is owned and operated by Drainage Services Department (DSD) in Hong Kong and is one of DSD’s iconic projects that will adopt advanced wastewater treatment technologies, feature renewable energy, incorporate extensive greening features and provides public co-use facilities for the benefit of the local community. Royal HaskoningDHV’s Nereda technology will be delivered to the project by its partner, Beijing Enterprises Water Group (BEWG) and electrical and mechanical contractor ATAL Engineering.

The availability of land is at a huge premium on Hong Kong. A small site footprint and high-efficiency are essential components of any wastewater project on the densely-populated 1,104 square kilometre island. Nereda technology was identified and assessed by DSD and its consultant AECOM in 2014 as one of the most promising technologies to deploy for the future relocation of Shatin Sewage Treatment Works (SSTW) into artificial caverns in a nearby mountain and free up premium land for redevelopment. Subsequently, the Nereda technology and two other compact technologies (SANI and MBBR) were included in a multiyear side-by-side pilot trial at SSTW.

The pilot results validated that the Nereda technology could efficiently treat the particular Hong Kong wastewater characteristics, which originate from its unique seawater toilet flushing. It also validated that Nereda technology was suitable to meet the more advanced treatment requirements that are applicable for effluent polishing plants. 

The public procurement of the iconic YLEPP project, which was open to other compact wastewater treatment technology, showed that the Nereda technology was the clear technology of choice for DSD, not just for the favourable construction costs, but also with regards to its significantly lower life cycle costs and higher sustainability level.

Roger Pung, Royal HaskoningDHV’s Sales Director for Nereda APAC commented: “Our Nereda project at Yuen Long Effluent Polishing Plant is a good example of how forward-thinking utility governors and their consultants are recognising technologies that contribute to a more cost-effective and sustainable wastewater treatment for smart megacities. The selection of Nereda technology, over comparative wastewater technologies, under vigorous evaluation criteria, demonstrates once again how effective, cost efficient and sustainable the Nereda treatment process is, in comparison with conventional systems. Our Nereda technology plant in Hong Kong will contribute to more affordable and more sustainable treatment for urban societies, which is good news for the region too.” 

Royal HaskoningDHV is an international engineering consultant that provides seamless, game-changing water and smart software solutions. Its award-winning Nereda wastewater treatment technology is already being applied on five continents for municipal and industrial water. It is an established game-changer for sustainable wastewater technology, with over 85 Nereda projects completed or being delivered across the world. It purifies wastewater sustainably and cost-effectively, by using patented aerobic granular sludge technology.