Jiangsu Wastewater Treatment Plant, Jiangyin, Jiangsu Province, China

The Jiangsu wastewater treatment plant is located in Zhouzhuang Town, Jiangyin City, within Wuxi City, Jiangsu Province, China. It serves a population of approximately 71,000 people, classifying it as a medium-sized municipal facility. The plant's designed capacity is 1. As a Chinese wastewater facility, the plant operates under the national standards set by the Ministry of Ecology and Environment, including the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). For a plant serving 71,000 people, secondary treatment with nutrient removal is typically required to meet Class 1-A or 1-B effluent standards, depending on the receiving water body's sensitivity. The plant discharges treated effluent into local waterways that ultimately drain into the Yangtze River basin, which flows into the East China Sea. The Yangtze River estuary supports diverse aquatic life and is an important ecological corridor for migratory fish species. The plant's location inland, more than 50 km from the coast, reduces direct marine discharge risks.

The plant's treated effluent enters local watercourses within the Yangtze River basin, one of China's most significant freshwater systems. The Yangtze River flows eastward through Jiangsu Province and discharges into the East China Sea near Shanghai. This watershed supports extensive fisheries, agricultural irrigation, and drinking water supplies. Downstream ecosystems include wetlands and estuarine habitats that are critical for biodiversity, including migratory birds and fish. The plant's performance directly affects water quality in this densely populated and economically vital region.