Henan Wastewater Treatment Plant, Kaifeng, Henan Province, China

The Henan wastewater treatment plant is located in Shilipu Village, Chengdong Subdistrict, Xiangfu District, Kaifeng City, Henan Province, China. It serves a population equivalent of approximately 60,600, classifying it as a medium-sized agglomeration under Chinese municipal wastewater management. The plant is situated inland, over 50 km from the coast, and discharges into local water bodies. However, under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), plants of this scale are typically required to meet Class 1-A or Class 1-B standards, which mandate biological treatment with nutrient removal for sensitive water bodies. The facility likely employs conventional activated sludge or similar secondary treatment processes to comply with national effluent limits. The plant's treated effluent is discharged into the local river network within the Huai River basin, which ultimately flows into the Yellow Sea. The receiving waters support agricultural irrigation and aquatic ecosystems, making proper treatment essential to prevent eutrophication and protect downstream water quality. The plant plays a key role in managing wastewater from the urban area of Kaifeng and surrounding villages.

The plant discharges into the Huai River basin, a major water system in eastern China that drains into the Yellow Sea. The downstream environment includes agricultural lands and freshwater ecosystems that depend on good water quality. Nutrient loading from untreated or inadequately treated wastewater could contribute to algal blooms and habitat degradation in the river and coastal zone.