Jiangsu Wastewater Treatment Plant, Tongzhou District, Nantong, Jiangsu, China

The Jiangsu wastewater treatment plant is located in Tongzhou District, Nantong City, Jiangsu Province, China. It serves a population equivalent of 120,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management frameworks. The facility is situated in the Yangtze River Delta region, a densely populated and economically active area. The plant operates under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent limits based on receiving water sensitivity. For plants of this scale in the Yangtze River Basin, tertiary treatment with nutrient removal is increasingly required to address eutrophication concerns. The treated effluent from the plant ultimately discharges into the Yangtze River via local waterways, contributing to the river's flow toward the East China Sea. The Yangtze River estuary supports diverse aquatic life and is an important ecological zone, though it faces pressures from industrial and urban runoff. The plant plays a key role in reducing pollutant loads to this critical water body.

The plant discharges into the Yangtze River basin, which flows through Jiangsu Province and empties into the East China Sea near Shanghai. The Yangtze estuary is a vital ecological zone supporting fisheries and migratory bird species. Downstream waters are subject to eutrophication risks from nutrient loading, making advanced treatment important for protecting aquatic habitats.