Overview
Gansu wastewater treatment plant serves 61,000 people in Taoyang Town, Lintao County, Gansu Province, China. It operates under China's national wastewater discharge standards.
The Gansu wastewater treatment plant is located in Taoyang Town (洮阳镇), Lintao County, within Dingxi City, Gansu Province, China. It serves a population of approximately 61,000 residents, placing it in the medium agglomeration category under Chinese wastewater management frameworks. As a municipal facility in inland China, the plant is subject to the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which sets effluent limits based on receiving water sensitivity. For plants serving populations above 50,000, secondary biological treatment with nutrient removal is typically required to meet Class 1-A or 1-B standards, depending on the environmental sensitivity of the receiving water body. The plant discharges treated effluent into the local watershed, which ultimately drains into the Yellow River basin via the Tao River (洮河), a major tributary. The Tao River supports agricultural irrigation and local ecosystems in the semi-arid Loess Plateau region. Proper treatment is essential to prevent eutrophication and protect downstream water quality in the Yellow River system.
Environmental context
The plant's treated effluent flows into the Tao River, a tributary of the Yellow River, which is the sixth-longest river system in the world. The Yellow River basin faces challenges from agricultural runoff and industrial pollution, making nutrient removal critical. The Loess Plateau region is ecologically sensitive to sedimentation and water quality degradation, and the plant's discharge contributes to maintaining the health of downstream aquatic habitats and irrigation water supplies.
Frequently asked questions
The plant is located in Taoyang Town (洮阳镇), Lintao County, Dingxi City, Gansu Province, China.
The plant serves approximately 61,000 residents in the Taoyang Town area.
Treated effluent is discharged into the local watershed, which flows into the Tao River, a tributary of the Yellow River.
The plant operates under China's national standard GB 18918-2002, which sets discharge limits for municipal wastewater treatment plants. For plants serving over 50,000 people, secondary treatment with nutrient removal is typically required.
The plant protects the Tao River and downstream Yellow River from untreated sewage, helping to prevent eutrophication and maintain water quality for agriculture and ecosystems in the Loess Plateau region.
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