Overview
Henan wastewater treatment plant serves 134,000 people in Daqiao Township, Weishi County, Kaifeng City, Henan Province, China. It operates under China's national wastewater discharge standards.
The Henan wastewater treatment plant is located in Daqiao Township, part of Weishi County in Kaifeng City, Henan Province, China. It serves a population of 134,000, classifying it as a medium-to-large agglomeration under Chinese municipal wastewater management. The plant is situated inland, away from coastal areas, and its operations are integral to local water quality management. China's wastewater treatment regulations, including the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), set effluent limits based on receiving water body sensitivity. For plants serving over 100,000 people, advanced treatment (e. g. , nutrient removal) is often required to meet Class 1-A standards, especially if discharging into sensitive waters. Typical facilities of this scale employ biological treatment with secondary or tertiary stages. The plant discharges into local waterways that ultimately drain into the Huai River basin, a major river system in eastern China. The Huai River flows into the Yellow Sea via the Yangtze River or directly, depending on the branch. The plant's performance directly affects downstream water quality, supporting agricultural irrigation and aquatic ecosystems in the region.
Environmental context
The plant's treated effluent enters local streams that are part of the Huai River basin, which flows through Henan and Anhui provinces before reaching the Yellow Sea. The Huai River basin supports extensive agriculture and provides drinking water for millions. Downstream ecosystems include wetlands and lakes that are important for migratory birds and fish. Effective nutrient removal is critical to prevent eutrophication in these sensitive water bodies.
Frequently asked questions
The plant is located in Daqiao Township, Weishi County, Kaifeng City, Henan Province, China, at coordinates 34.397 N, 114.157 E.
The plant serves approximately 134,000 people, classifying it as a medium-to-large agglomeration under Chinese wastewater management standards.
The plant discharges into local waterways that are part of the Huai River basin, ultimately flowing into the Yellow Sea. It helps protect downstream rivers and lakes from pollution.
The plant operates under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). For plants serving over 100,000 people, Class 1-A standards are typically required, mandating advanced treatment with nutrient removal.
Plants of this scale in China commonly use biological treatment processes such as activated sludge, often with additional nutrient removal (nitrogen and phosphorus) to meet Class 1-A discharge standards. Tertiary treatment may be employed if discharging into sensitive water bodies.
Nearby plants