Sichuan Wastewater Treatment Plant, Chengdu | Sichuan Province, China

The Sichuan wastewater treatment plant is located in Zhaozhen Street, Jintang County, Chengdu, Sichuan Province, China. It serves a population of approximately 85,000, classifying it as a medium-sized urban agglomeration under Chinese wastewater management frameworks. China's wastewater treatment regulations require secondary treatment for urban plants serving populations above 50,000, with increasingly stringent nutrient removal standards in sensitive watersheds. Typical facilities of this scale employ activated sludge processes with biological nutrient removal to meet Class 1A or 1B discharge standards. The treated effluent from this plant ultimately drains into the Tuo River system, a tributary of the Yangtze River. The Yangtze basin supports diverse aquatic ecosystems and provides drinking water for millions downstream. Proper treatment at this facility helps protect water quality in the Tuo River and contributes to the broader Yangtze River protection initiatives.

The plant discharges into the Tuo River, which flows into the Yangtze River, one of China's most ecologically and economically significant waterways. The Yangtze basin supports diverse aquatic life, including endangered species such as the Chinese sturgeon and finless porpoise. Downstream areas rely on the river for irrigation, drinking water, and industrial use, making effective wastewater treatment critical for maintaining water quality and ecosystem health.