Overview
Hunan wastewater treatment plant serves Changde, Hunan province, China, with a population of 64,500. The facility operates under China's national wastewater discharge standards.
The Hunan wastewater treatment plant is located in Changde, Hunan province, China, serving a population of approximately 64,500. The facility is situated in the urban area of Jinshi City, within the Dongting Lake watershed, a major tributary of the Yangtze River. As a medium-sized agglomeration, the plant plays a key role in managing municipal wastewater for the region. China's wastewater treatment regulations, including the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), mandate secondary treatment with nutrient removal for plants of this scale. Typical facilities in this region employ activated sludge processes with biological nutrient removal to meet Class 1A or 1B standards, which limit BOD, COD, ammonia, and phosphorus. The treated effluent is discharged into local waterways that flow into Dongting Lake, the second-largest freshwater lake in China, and eventually into the Yangtze River. This watershed supports diverse aquatic life and provides water for agriculture, industry, and drinking water for millions. Proper treatment is critical to prevent eutrophication and protect downstream ecosystems.
Environmental context
The plant discharges into the Dongting Lake basin, a major tributary of the Yangtze River. Dongting Lake is an ecologically sensitive area that supports diverse aquatic life, including migratory birds and fish species. The lake also plays a crucial role in flood regulation and water supply for the surrounding region. Downstream, the Yangtze River flows into the East China Sea, making nutrient and pollutant control essential for coastal water quality.
Frequently asked questions
The plant is located in Jinshi City, Changde, Hunan Province, China, within the Dongting Lake watershed.
The plant serves approximately 64,500 people, classifying it as a medium-sized agglomeration under Chinese wastewater regulations.
Plants serving populations over 50,000 are generally required to meet the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002) Class 1A or 1B, which includes secondary treatment with biological nutrient removal.
The treated effluent flows into local waterways that drain into Dongting Lake, a major tributary of the Yangtze River, and ultimately reaches the East China Sea.
The plant operates under China's national wastewater discharge standards, which mandate treatment levels based on receiving water sensitivity. For plants discharging into sensitive lakes like Dongting, stricter nutrient removal is required to prevent eutrophication.
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