Hunan Wastewater Treatment Plant, Chenzhou City, Hunan Province

The Hunan wastewater treatment plant is located in Anren County, Chenzhou City, in the southern part of Hunan Province, China. It serves a population of approximately 51,000, classifying it as a medium-sized municipal facility under Chinese wastewater management standards. The plant is situated inland, more than 50 kilometers from the coast, and its treated effluent flows into local rivers that ultimately drain into the Yangtze River basin. Under China's national wastewater discharge standards (GB 18918-2002), municipal plants of this scale are typically required to meet Class 1-A or Class 1-B effluent limits, which mandate biological treatment with nutrient removal. The plant's operation is subject to local environmental protection bureau oversight and regular compliance monitoring. The receiving water body is part of the Xiang River system, a major tributary of the Yangtze River. The downstream environment supports diverse aquatic life and provides water for agricultural and domestic use. Proper treatment at this plant helps protect water quality in the Xiang River and contributes to the ecological health of the broader Yangtze River basin.

The plant discharges into local waterways that feed into the Xiang River, a major tributary of the Yangtze River. The downstream environment includes agricultural areas and wetlands that support diverse aquatic species and migratory birds. Effective wastewater treatment is critical to prevent nutrient pollution and maintain water quality in this ecologically sensitive region.