Hunan Wastewater Treatment Plant, Xiangtan County, Hunan Province

Hunan wastewater treatment plant is located in Xiangtan County, Hunan Province, China, serving a population of 210,000. The plant is situated in the urban area of Yisuhe Town, within the Xiangtan City region, and plays a key role in managing municipal wastewater for this medium-sized agglomeration. Under China's national wastewater treatment regulations, plants serving populations over 100,000 are typically required to achieve secondary treatment standards, with some sensitive areas requiring tertiary treatment. It operates within the framework of China's Water Pollution Prevention and Control Action Plan, which mandates strict effluent limits for nitrogen and phosphorus in key watersheds. The plant discharges treated effluent into local waterways that eventually 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 at this plant helps protect water quality in the Xiang River and ultimately the Yangtze River estuary.

The plant's treated effluent flows into local streams that feed the Xiang River, a major tributary of the Yangtze River. The Xiang River basin is ecologically significant, supporting diverse fish species and providing critical habitat for migratory birds. Downstream, the Yangtze River estuary is a vital ecological zone for aquatic life and fisheries. Effective wastewater treatment is essential to prevent eutrophication and protect these downstream ecosystems.