Zhejiang Wastewater Treatment Plant, Tongxiang, Zhejiang Province, China

The Zhejiang wastewater treatment plant is located in Chongfu Town, Tongxiang City, within Jiaxing Prefecture, Zhejiang Province, China. It serves a population equivalent of 150,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management frameworks. The plant's designed capacity is recorded as 1. As a municipal facility in China, the plant is subject to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent limits for chemical oxygen demand, ammonia nitrogen, total phosphorus, and other parameters. For agglomerations of this scale, secondary treatment with nutrient removal is typically required, especially in sensitive watersheds. The plant discharges into the local water system within the Yangtze River Delta region, a densely populated and economically vital area. The receiving water body ultimately drains into the East China Sea. The region faces challenges from industrial and agricultural runoff, making effective wastewater treatment critical for protecting downstream aquatic ecosystems and coastal water quality.

The plant is situated in the Yangtze River Delta, one of China's most developed regions, with a dense network of rivers and canals. Treated effluent likely enters local waterways that flow into the Yangtze River estuary and then the East China Sea. The downstream environment supports diverse aquatic life and is important for fisheries and coastal ecology. Nutrient loading from urban and industrial sources is a concern, requiring advanced treatment to prevent eutrophication in coastal waters.