Chongqing Wastewater Treatment Plant, Wanzhou District | Yangtze River Basin

The Chongqing wastewater treatment plant is located in Wanzhou District, Chongqing, China, along the Yangtze River. It serves an estimated population of 350,000, classifying it as a large agglomeration under Chinese wastewater regulations. The plant's designed capacity is 1.00 m³/s, indicating significant infrastructure to handle municipal wastewater from this urban area. As a major facility in the Yangtze River basin, the plant operates under China's national wastewater discharge standards, which require secondary treatment for urban wastewater. Given the scale of the population served, the plant likely incorporates biological treatment processes to meet effluent quality standards set by the Ministry of Ecology and Environment. The treated effluent is discharged into the Yangtze River, which flows eastward through central China before reaching the East China Sea near Shanghai. The Yangtze basin supports diverse aquatic ecosystems and provides drinking water for millions. Effective treatment at this plant helps reduce nutrient and pollutant loads, protecting downstream water quality and ecological health.

The plant discharges into the Yangtze River, China's longest waterway, which flows through Chongqing and eventually reaches the East China Sea. The Yangtze basin is ecologically significant, supporting numerous fish species and providing critical habitat for migratory birds. Downstream areas include the Three Gorges Reservoir, which influences local hydrology and water quality. Effective wastewater treatment is essential to prevent eutrophication and protect aquatic biodiversity in this major river system.