Chongqing Wastewater Treatment Plant, Fengjie County, Chongqing, China

The Chongqing wastewater treatment plant is located in Fengjie County, Chongqing, China, serving a population of approximately 130,000. The plant has a designed capacity of 1.00, indicating its scale as a medium-sized municipal facility. It is situated in the mountainous terrain of the Three Gorges region along the Yangtze River. As a plant in China, it operates under national wastewater discharge standards, which require secondary treatment for urban wastewater. For a population of this size, the plant is expected to meet Class 1A or 1B standards under the Chinese Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). Typical facilities in this region employ biological treatment methods such as activated sludge or oxidation ditch. The plant discharges treated effluent into the Yangtze River basin, which flows eastward through the Three Gorges region and ultimately into the East China Sea. The Yangtze River is a critical water resource for millions of people and supports diverse aquatic ecosystems, including migratory fish species. The plant's operation helps protect downstream water quality in this ecologically sensitive area.

The plant discharges into the Yangtze River basin, which flows through the Three Gorges region and empties into the East China Sea. The Yangtze River supports a rich biodiversity, including endemic fish species and migratory birds. The plant's location within 50 km of the coast means its effluent can influence coastal water quality, making effective treatment important for marine ecosystem health.