Overview
Hunan wastewater treatment plant serves Hengyang, Hunan province, China, with a population equivalent of 150,000. It discharges into local waterways within the Xiang River basin.
The Hunan wastewater treatment plant is located in Hengyang, Hunan province, China, serving a population equivalent of 150,000. It is situated in the Zhengxiang district, near the Zhengshui River, a tributary of the Xiang River. The plant is part of the municipal wastewater infrastructure for Hengyang, a major city in southern China. As a large agglomeration serving over 100,000 people, the plant is expected to meet China's national discharge standards, which are aligned with the Water Pollution Prevention and Control Action Plan. These standards typically require secondary or advanced treatment to protect receiving water bodies. Facilities of this scale in China often employ activated sludge processes with nutrient removal. The plant's treated effluent likely discharges into the Zhengshui River, which flows into the Xiang River, a major tributary of the Yangtze River. The Xiang River basin supports diverse aquatic life and provides water for agriculture and industry. Downstream, the Yangtze River estuary is an ecologically sensitive area that supports fisheries and migratory birds.
Environmental context
The plant discharges into the Zhengshui River, a tributary of the Xiang River, which flows into the Yangtze River and ultimately the East China Sea. The Xiang River basin is an important ecological corridor supporting diverse aquatic species and providing water for agriculture and industry. The Yangtze River estuary downstream is a critical habitat for migratory birds and fish, making nutrient and pollutant control essential.
Frequently asked questions
The plant is located in Hengyang, Hunan province, China, specifically in the Zhengxiang district near the Zhengshui River.
The plant serves a population equivalent of 150,000 people.
The treated effluent is discharged into the Zhengshui River, a tributary of the Xiang River, which flows into the Yangtze River.
The plant operates under China's Water Pollution Prevention and Control Action Plan, which sets discharge standards for municipal wastewater. Plants serving over 100,000 people typically require secondary or advanced treatment.
For agglomerations of this scale, Chinese regulations generally mandate secondary biological treatment with nutrient removal, often using activated sludge processes, to meet Class 1A or 1B discharge standards.
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