Asia's largest subterranean water recycling plant commenced operation in Beijing on Thursday, one of the measures being rolled out by the capital to manage sewage in the city proper.

The three-storey plant, located beneath a wetland park in southern Beijing, is designed to handle 600,000 cubic meters of waste water every day and the processed water will be fed into rivers and lakes or used to maintain public parks.

All of the sewage will be processed underground while any waste gas will be released through three towers after being treated, Zhang added.