Overview
The Gansu wastewater treatment plant serves Dongzhi Town in Qingyang, Gansu, China. It treats wastewater from approximately 79,400 residents, supporting local sanitation and environmental protection.
The Gansu wastewater treatment plant is located in Dongzhi Town, Xifeng District, Qingyang City, Gansu Province, China. It serves a population of approximately 79,400 people, making it a medium-sized agglomeration under typical Chinese municipal wastewater classification. The plant is situated in the inland Loess Plateau region, characterized by arid to semi-arid climate and significant agricultural activity. As a municipal facility in China, the plant operates under the national Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent limits based on the receiving water's environmental sensitivity. For plants of this scale, secondary biological treatment with nutrient removal is commonly required to meet Class 1A or 1B standards, especially if discharging into sensitive water bodies. Typical configurations for this region include anaerobic-anoxic-oxic (A2O) or sequencing batch reactor (SBR) processes. The treated effluent is likely discharged into a local river or stream within the Yellow River basin, as Gansu Province is part of the upper Yellow River watershed. The plant plays a crucial role in protecting downstream water quality and supporting the ecological health of the region's water bodies, which are vital for agriculture and domestic use.
Environmental context
The plant discharges into a local watercourse that ultimately drains into the Yellow River (Huang He), one of China's major river systems. The Yellow River basin in Gansu is ecologically sensitive due to its role in supplying water for irrigation, industry, and drinking water for millions of people downstream. The region's semi-arid climate means that water resources are scarce, making effective wastewater treatment critical for maintaining water quality and supporting aquatic life. The plant's operations help reduce nutrient and pollutant loads that could otherwise contribute to eutrophication and degradation of the river ecosystem.
Frequently asked questions
The plant is located in Guobu Village, Dongzhi Town, Xifeng District, Qingyang City, Gansu Province, China.
The plant serves approximately 79,400 people, classifying it as a medium-sized agglomeration.
The treated effluent is discharged into a local watercourse that flows into the Yellow River basin, which is a major water source for northern China.
The plant operates under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent quality standards based on the receiving water's environmental sensitivity. Plants of this scale typically require secondary treatment with nutrient removal.
For medium-sized agglomerations in China, common treatment processes include anaerobic-anoxic-oxic (A2O), oxidation ditch, or sequencing batch reactor (SBR) systems, often designed to meet Class 1A or 1B discharge standards.
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