Overview
Hunan wastewater treatment plant serves Mayang County in Hunan Province, China, with a population of 73,000. It operates under China's national wastewater discharge standards.
The Hunan wastewater treatment plant is located in Mayang County, a Miao autonomous county in Huaihua City, Hunan Province, China. The facility serves a population of approximately 73,000, placing it in the medium agglomeration category for Chinese wastewater infrastructure. As a municipal plant in China, it is subject to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets limits for COD, BOD, ammonia nitrogen, and other parameters. For plants serving populations of this scale, secondary treatment with nutrient removal is typically required, especially in regions like Hunan that are part of the Yangtze River basin. The plant discharges treated effluent into local waterways that ultimately flow into the Yuan River, a tributary of the Yangtze River. The Yangtze River basin is ecologically significant, supporting diverse aquatic life and providing water for millions of people downstream. Proper treatment is essential to protect water quality in this densely populated region.
Environmental context
The plant's treated effluent enters local streams that feed into the Yuan River, which flows into Dongting Lake and then the Yangtze River. This watershed supports extensive agriculture and fisheries, and the Yangtze River downstream is a critical habitat for endangered species such as the Chinese sturgeon. Nutrient loading from wastewater can contribute to eutrophication in Dongting Lake, making effective treatment important for ecological balance.
Frequently asked questions
The plant is located in Mayang County, a Miao autonomous county in Huaihua City, Hunan Province, China.
The plant serves approximately 73,000 people, classifying it as a medium-sized municipal wastewater facility.
The plant discharges into local waterways that flow into the Yuan River, a tributary of the Yangtze River, helping protect water quality in the Yangtze River basin.
The plant must comply with China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent limits for key pollutants.
For medium-sized agglomerations in China, secondary treatment with biological nutrient removal is standard, often including activated sludge processes and disinfection.
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