Beijing Wastewater Treatment Plant, Chaoyang District, Beijing, China

The Beijing wastewater treatment plant is located in Sunhe Township, Chaoyang District, Beijing, China. It serves a population equivalent of 120,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management standards. The facility is situated inland, more than 50 km from the coast, and its operations are part of Beijing's municipal wastewater infrastructure. As a plant serving over 100,000 people, it is expected to meet secondary treatment standards under China's national wastewater discharge regulations (GB 18918-2002). Facilities of this scale typically employ biological treatment processes such as activated sludge or sequencing batch reactors to achieve required effluent quality. The plant discharges treated wastewater into local rivers or drainage systems that ultimately flow into the Hai River basin, which drains into the Bohai Sea. The receiving water bodies support aquatic ecosystems and are important for regional water resource management. The plant plays a key role in protecting downstream water quality and public health in the greater Beijing area.

The plant discharges into the Hai River basin, which flows through northern China and empties into the Bohai Sea. The downstream environment includes agricultural areas and urban zones, where treated effluent contributes to river flow and supports aquatic life. The Bohai Sea is a semi-enclosed water body that receives nutrient inputs from multiple rivers, making wastewater treatment crucial for controlling eutrophication and maintaining marine ecosystem health.