Chongqing Wastewater Treatment Plant, Tiaodeng Town, Dadukou District, Chongqing

The Chongqing wastewater treatment plant is located in Tiaodeng Town, Dadukou District, Chongqing, China, serving a population of 160,000. This facility is part of the municipal wastewater infrastructure for the greater Chongqing metropolitan area, one of the largest urban agglomerations in China. The plant's designed capacity is 1.00 (likely in million cubic meters per day or similar unit), indicating a large-scale treatment facility. As a major treatment plant in China, it operates under the national Water Pollution Prevention and Control Law and the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). For a plant serving 160,000 people, secondary treatment with nutrient removal is typically required, and stricter standards apply in sensitive watersheds. The plant likely employs conventional activated sludge or similar biological treatment processes to meet effluent quality standards. The treated effluent is discharged into local waterways that eventually flow into the Yangtze River, the longest river in Asia. The Yangtze River basin supports diverse aquatic ecosystems and provides drinking water for millions downstream. The plant plays a crucial role in protecting water quality in this densely populated and industrially active region, helping to reduce pollution loads entering the Yangtze River and its tributaries.

The plant discharges into local water bodies that drain into the Yangtze River, which flows eastward through central China before emptying into the East China Sea near Shanghai. The Yangtze River basin is ecologically significant, supporting numerous fish species, including the endangered Chinese sturgeon, and providing critical habitat for migratory birds. The plant's location in the upper-middle reaches of the Yangtze means its effluent quality directly affects downstream water users and ecosystems in the Three Gorges Reservoir area and beyond.