Overview
Guizhou wastewater treatment plant serves 80,000 people in Qianxi City, Guizhou Province, China. It operates under China's national wastewater standards for urban agglomerations.
The Guizhou wastewater treatment plant is located in Shuixi Subdistrict, Qianxi City, within Bijie City, Guizhou Province, China. It serves a population of approximately 80,000, classifying it as a medium-sized urban wastewater facility in the region. 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 1-A or 1-B standards, depending on the receiving water's sensitivity. The plant's treated effluent is discharged into local waterways that ultimately flow into the Yangtze River basin via the Wujiang River system. This downstream connection underscores the plant's role in protecting water quality in a densely populated and agriculturally active region of southwestern China.
Environmental context
The plant discharges into the Wujiang River system, a major tributary of the Yangtze River. The Wujiang flows through karst landscapes and supports diverse aquatic life, including endemic fish species. Downstream, the Yangtze River is ecologically significant as a migratory corridor and supports extensive fisheries. Effective treatment at this plant helps reduce nutrient and pollutant loads entering this critical freshwater ecosystem.
Frequently asked questions
The plant is located in Shuixi Subdistrict, Qianxi City, Bijie City, Guizhou Province, China.
The plant serves approximately 80,000 people, making it a medium-sized urban wastewater facility.
The plant discharges into the Wujiang River system, which flows into the Yangtze River, protecting downstream water quality in these major waterways.
The plant operates under China's national standard GB 18918-2002, which sets discharge limits for municipal wastewater. For a plant serving 80,000 people, secondary treatment with nutrient removal is typically required to meet Class 1-A or 1-B standards.
For agglomerations of this size, Chinese regulations generally mandate secondary biological treatment with nitrogen and phosphorus removal, often using processes like activated sludge or sequencing batch reactors, to achieve stringent effluent quality.
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