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

The Jiangsu wastewater treatment plant is located in Haimen District, Nantong, Jiangsu Province, China, along Changjiang South Road. It serves a population of approximately 140,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management standards. The plant's designed capacity is 1. As a facility in China, the plant operates under the national wastewater discharge standards (GB 18918-2002) and the Water Pollution Prevention and Control Law. For agglomerations of this scale, secondary treatment with nutrient removal is typically required, especially in sensitive water bodies. The plant's location within 50 km of the coast suggests potential discharge into coastal waters, which may necessitate additional treatment to meet marine discharge criteria. Given its proximity to the Yangtze River Delta, treated effluent likely drains into the Yangtze River or its tributaries, eventually reaching the East China Sea. This region is ecologically significant, supporting diverse aquatic life and serving as a critical migratory corridor for fish and birds. The plant plays a key role in protecting local water quality and downstream ecosystems.

The plant is situated in the Yangtze River Delta, one of China's most economically active and ecologically sensitive regions. Treated effluent likely discharges into the Yangtze River system, which flows into the East China Sea. This watershed supports diverse aquatic habitats and is an important migratory route for fish species such as the Chinese sturgeon. The plant's proximity to the coast (within 50 km) underscores the need for effective nutrient removal to prevent eutrophication in coastal waters.