Changi East Water Treatment Works

The Changi East Water Treatment Works is a 380,000 m³/day advanced membrane bioreactor plant under construction in eastern Singapore, serving 800,000 residents across the Tampines and Pasir Ris planning areas. The project is a joint venture with PUB Singapore, the national water agency, and represents Singapore's next generation of NEWater production infrastructure.

The treatment train combines conventional activated sludge with Kubota flat-sheet membrane bioreactors, achieving effluent quality suitable for direct industrial reuse. UV-LED disinfection replaces conventional UV systems, reducing energy consumption by 60% per cubic metre treated. Biogas co-generation from sludge digestion produces 2.4 MW of renewable electricity, offsetting 18% of the plant's operational energy demand.

The zero-liquid discharge system recovers 99.7% of influent water, with the remaining 0.3% concentrated into a stabilised sludge cake for offshore land reclamation — a critical requirement in a nation with no natural freshwater resources and a stated goal of water self-sufficiency by 2061.