Hunan Wastewater Treatment Plant, Jiangyong County, Hunan Province, China

The Hunan wastewater treatment plant is located in Jiangyong County (江永县), a county-level city under Yongzhou prefecture in southern Hunan Province, China. The facility serves an estimated population of 68,400, placing it in the medium agglomeration category for Chinese municipal wastewater infrastructure. As a Chinese municipal wastewater treatment plant, it operates under national standards including the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). It is expected to meet Class 1A or 1B discharge standards depending on the receiving water's sensitivity. The plant discharges into local waterways that ultimately drain into the Xiang River, a major tributary of the Yangtze River. The Xiang River basin supports diverse aquatic ecosystems and provides water for agriculture and domestic use downstream. Proper treatment at this facility helps protect water quality in the Xiang River and contributes to the ecological health of the Dongting Lake region, where the Xiang River meets the Yangtze.

The plant's treated effluent flows into local streams that are part of the Xiang River watershed, which drains into Dongting Lake and then the Yangtze River. The Xiang River basin is ecologically significant, supporting fish spawning grounds and migratory bird habitats along its floodplains. Downstream waters are used for irrigation and drinking water supply, making nutrient and pathogen removal critical for public health and ecosystem balance.