Overview
Yunnan wastewater treatment plant serves Yuxi City in Yunnan Province, China, with a population equivalent of 104,200. The facility operates under China's national wastewater discharge standards.
The Yunnan wastewater treatment plant is located in Tonghai County, Yuxi City, Yunnan Province, China. It serves a population equivalent of approximately 104,200, classifying it as a medium-to-large agglomeration under Chinese municipal wastewater management frameworks. The plant is situated in the inland region of Yunnan, a province known for its mountainous terrain and numerous lakes. As a facility serving over 100,000 people, the plant is expected to meet China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which mandates secondary treatment with nutrient removal for plants of this scale. The regulatory framework ensures that such facilities typically employ biological treatment processes to achieve required effluent quality. The plant discharges treated wastewater into local water bodies that ultimately drain into the broader Yangtze River basin or the Pearl River basin, depending on the specific watershed. Yunnan's lakes and rivers support diverse aquatic ecosystems and are important for regional water supply and agriculture. The plant plays a key role in protecting these water resources from untreated sewage.
Environmental context
The plant is located in Yunnan Province, a region characterized by the Yunnan-Guizhou Plateau and numerous lakes such as Dianchi Lake and Fuxian Lake. The treated effluent likely flows into local streams that feed into the Red River (Honghe) or the Yangtze River system, eventually reaching the South China Sea. The surrounding watershed supports diverse aquatic life and is ecologically sensitive due to the presence of endemic fish species and migratory birds. Proper wastewater treatment is critical to prevent eutrophication and maintain water quality in these valuable freshwater ecosystems.
Frequently asked questions
The plant is located in Tonghai County, Yuxi City, Yunnan Province, China, at coordinates 24.126 N, 102.752 E.
The plant serves a population equivalent of 104,200 people, classifying it as a medium-to-large municipal wastewater facility.
The plant discharges treated effluent into local water bodies that are part of the broader river systems in Yunnan, ultimately draining into the South China Sea via the Red River or Yangtze River basins.
The plant operates under China's national standard GB 18918-2002, which requires secondary treatment with nutrient removal for facilities serving over 100,000 people.
For plants of this scale, typical treatment includes primary sedimentation followed by biological treatment (such as activated sludge or A2O process) and disinfection, meeting Class 1A or 1B effluent standards under GB 18918-2002.
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