The Pentair X-Flow system at CWRP is the first Megablock installation in Asia.
Pentair X-Flow developed the Megablock, a modular concept for municipal wastewater treatment, based on its proven Airlift™ MBR technology. The validation plant at CWRP runs on the principle of direct sludge filtration (DSF) followed by MBR treatment. To study the results of both treatment models, Pentair X-Flow will intensify its innovation and development program in Asia Pacific for a period of two years and research the plant performance at a capacity of 240 m3/day with a possible future expansion up to 1000 m3/day.
The system involves activated sludge being pumped from the bioreactor of the Changi WRP to the Pentair X-Flow membrane modules through a specially developed compact supply unit. The activated sludge is fed into the membranes with air, using an optimised aerator. In the membranes, the clean water is separated from the activated sludge, which is fed back to the bioreactor. This enables the system to achieve zero discharge, thus reducing the pipe dimensions, which contributes to a reduction of the total investment costs.
