BWSSB to convert sewage sludge into biogas

The Bangalore Water Supply and Sewerage Board (BWSSB) will be implementing a biogas upgrading project to convert sewage sludge into Compressed Bio-Gas (CBG), with an estimated additional revenue potential of around ₹120 crore over the next 20 years, according to a release.

BWSSB Chairman Ram Prasath Manohar said that the project would cover five major sewage treatment plants (STPs) in the city and was proposed to be used either for injection into the City Gas Distribution Network or as a cleaner transport fuel, the release stated. “At present, most of the STPs use biogas for in-situ electricity generation, while one facility reportedly flares the gas,” he added.