Sichuan Wastewater Treatment Plant, Dayi County, Chengdu, Sichuan, China

The Sichuan wastewater treatment plant is located in Dayi County, Chengdu, Sichuan Province, China. It serves a population of approximately 86,000 people, placing it in the medium agglomeration category. The plant is situated inland, away from coastal areas, and its operations are governed by China's national wastewater discharge standards. The plant is expected to meet the requirements of China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which mandates secondary treatment with nutrient removal for plants of this scale. The plant's infrastructure is sized to handle the wastewater from the local population. The treated effluent is discharged into local water bodies that eventually flow into the Yangtze River basin. The plant plays a crucial role in protecting the aquatic environment of the region, reducing pollutant loads to downstream rivers and lakes, and supporting the ecological health of the Yangtze River system.

The plant discharges into local waterways that are part of the Yangtze River basin, one of the most ecologically significant river systems in Asia. The downstream environment includes diverse aquatic habitats that support numerous fish species and migratory birds. The plant's operation helps mitigate eutrophication risks in receiving waters, which are sensitive to nutrient pollution from urban runoff and agricultural activities.