Hunan Wastewater Treatment Plant, Suining County, Hunan, China

The Hunan wastewater treatment plant is located in Suining County, Shaoyang, Hunan Province, China. It serves a population of approximately 65,300 people, making it a medium-sized agglomeration under Chinese wastewater management standards. The plant is situated inland, far from coastal areas, and contributes to the local water quality management in the region. As a municipal facility in China, the plant operates under the national wastewater discharge standards, which are governed by the Ministry of Ecology and Environment. For plants serving populations around 65,000, secondary treatment is typically required to meet the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). It is expected to comply with these regulations to protect local water bodies. The treated effluent from the plant is discharged into a local river system, which eventually flows into the Yangtze River basin via the Zi River or another tributary. The plant plays a crucial role in reducing pollutant loads and safeguarding the aquatic ecosystem of the downstream watershed, which supports diverse freshwater life and agricultural activities.

The plant discharges into a local river that is part of the Yangtze River basin, one of China's most important water systems. The downstream environment includes freshwater habitats that support fish and other aquatic species, as well as agricultural and domestic water users. Proper treatment helps prevent eutrophication and maintains water quality in the river network.