Sichuan Wastewater Treatment Plant, Suining | China

The Sichuan wastewater treatment plant is located in Suining City, Sichuan Province, China, along the Fujiang River. It serves a population of 41,100 as part of the municipal wastewater infrastructure for the urban area of Suining. Under China's national wastewater discharge standards (GB 18918-2002), treatment plants serving populations of this scale are typically required to meet Class 1-A or 1-B standards, which mandate secondary treatment with nutrient removal. The regulatory framework ensures appropriate treatment for the population served. The plant discharges treated effluent into the Fujiang River, a tributary of the Jialing River, which flows into the Yangtze River. The downstream environment supports diverse aquatic life and is important for regional water quality and ecological health.

The plant discharges into the Fujiang River, which flows into the Jialing River and ultimately the Yangtze River. The Yangtze basin is ecologically significant, supporting diverse aquatic species and providing water resources for millions. The plant's location in an inland urban area means its effluent quality directly affects downstream river health and local water quality.