Overview
Hunan wastewater treatment plant serves Changsha County, Hunan, China, with a population equivalent of 200,000. It operates under China's national wastewater discharge standards.
The Hunan wastewater treatment plant is located in Changsha County, Hunan Province, China, serving a population equivalent of 200,000. The facility is situated in the Xianglong subdistrict, part of the greater Changsha metropolitan area, a rapidly urbanizing region in central China. As a plant serving a medium-to-large agglomeration, it is expected to comply with China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which mandates secondary treatment with nutrient removal for plants of this scale. Typical facilities in this region employ activated sludge processes with biological nitrogen and phosphorus removal. The treated effluent is discharged 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, industry, and drinking water downstream. Proper treatment is critical to prevent eutrophication and protect water quality in the Yangtze River system.
Environmental context
The plant discharges into the Xiang River basin, which flows into Dongting Lake and then the Yangtze River. The Xiang River is a vital water source for central Hunan, supporting fisheries, irrigation, and urban water supply. Downstream ecosystems include wetlands and floodplains that provide habitat for migratory birds and aquatic species. Nutrient loading from untreated or inadequately treated wastewater could contribute to algal blooms and oxygen depletion in Dongting Lake, a large freshwater lake of ecological significance.
Frequently asked questions
The plant is located in the Xianglong subdistrict, Changsha County, Hunan Province, China, within the greater Changsha metropolitan area.
The plant serves a population equivalent of 200,000, classifying it as a medium-to-large agglomeration under Chinese wastewater regulations.
The treated effluent is discharged into local waterways that flow into the Xiang River, a major tributary of the Yangtze River, eventually reaching Dongting Lake.
The plant operates under China's national standard GB 18918-2002, which requires secondary treatment with nutrient removal for plants serving over 100,000 people.
Plants of this scale in China commonly use activated sludge processes with biological nitrogen and phosphorus removal to meet the Class 1A discharge standard.
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