China’s municipal sewage treatment is estimabed at 15 million tons/day, providing 5 billion tons of recycled water per year. Membrane processes are preferred; in 2006, Beijing Miyun built China’s first 10,000-ton-scale recycled water plant with a capacity of 45,000 tons/day. The plant was at the time the world’s largest MBR project.

China Bio news release, November 24, 2016