Overview
Hunan wastewater treatment plant serves Hengyang, Hunan Province, China, with a population equivalent of 153,000. It operates under China's national wastewater discharge standards.
The Hunan wastewater treatment plant is located in Hengdong County, Hengyang City, Hunan Province, China. It serves a population equivalent of 153,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management frameworks. The plant is situated inland, approximately 50 km from the coast, and discharges into local water bodies that eventually flow into the Yangtze River basin. Under China's national discharge standards (GB 18918-2002), plants of this scale are typically required to meet Class 1A or 1B standards, which mandate secondary treatment with nutrient removal. The regulatory framework ensures that facilities serving over 100,000 people must implement advanced treatment to protect receiving waters. The plant's treated effluent likely enters the Xiang River system, a major tributary of the Yangtze River, which flows through Hunan Province and into Dongting Lake before reaching the Yangtze. This watershed supports diverse aquatic life and provides water for agriculture and industry. The plant's operation is critical for maintaining water quality in this densely populated and economically active region.
Environmental context
The plant discharges into the Xiang River watershed, which flows into Dongting Lake and then the Yangtze River. This basin supports a rich ecosystem, including migratory fish species and wetland habitats. The region experiences a subtropical monsoon climate with high rainfall, making effective wastewater treatment essential to prevent eutrophication and protect downstream water quality for drinking, agriculture, and fisheries.
Frequently asked questions
The plant is located in Hengdong County, Hengyang City, Hunan Province, China, approximately 50 km inland from the coast.
The plant serves a population equivalent of 153,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management standards.
Treated effluent is discharged into the Xiang River watershed, which flows into Dongting Lake and eventually the Yangtze River.
The plant operates under China's national discharge standard GB 18918-2002, which requires secondary treatment with nutrient removal for facilities of this scale.
Plants of this size in China are typically required to meet Class 1A or 1B standards, which include biological treatment and phosphorus/nitrogen removal to protect receiving waters.
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