Overview
Yunnan wastewater treatment plant serves Kunming, Yunnan, China, with a population of 56,000. It operates under China's national wastewater standards for urban agglomerations.
The Yunnan wastewater treatment plant is located in Kunyang Subdistrict, Kunming City, Yunnan Province, China. It serves a population of approximately 56,000, classifying it as a medium-sized agglomeration under Chinese wastewater management frameworks. As a plant in China, it is subject to the national Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which sets effluent limits for conventional pollutants and nutrients. For agglomerations of this scale, secondary treatment with nutrient removal is typically required to meet Class 1A or 1B standards, depending on the receiving water's sensitivity. The plant's treated effluent likely discharges into a local waterway within the Dianchi Lake basin, a major freshwater lake in Yunnan. Dianchi Lake is ecologically sensitive due to eutrophication concerns, making nutrient removal critical for downstream water quality and biodiversity.
Environmental context
The plant is situated in the Dianchi Lake watershed, which drains into the Yangtze River system via the Pudu River. Dianchi Lake is a large, shallow lake that has experienced significant eutrophication from urban and agricultural runoff. Protecting this water body requires advanced treatment to reduce nitrogen and phosphorus loads, supporting aquatic life and regional water security.
Frequently asked questions
The plant is located in Kunyang Subdistrict, Kunming City, Yunnan Province, China.
The plant serves approximately 56,000 people, classifying it as a medium-sized urban agglomeration.
The plant likely discharges into a tributary of Dianchi Lake, a large freshwater lake in Yunnan that flows into the Yangtze River system.
The plant must comply with China's GB 18918-2002 standard, which sets effluent limits for COD, BOD, ammonia, and phosphorus. For sensitive areas like Dianchi Lake, stricter Class 1A limits may apply.
For a medium-sized agglomeration, secondary biological treatment with nutrient removal (e.g., A2O or SBR) is typical to meet Class 1A or 1B standards, especially in ecologically sensitive basins.
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