Henan Wastewater Treatment Plant, Xiping County, Zhumadian, Henan Province

The Henan wastewater treatment plant is located in Xiping County, Zhumadian City, Henan Province, China, serving a population of approximately 111,200. The facility is part of the municipal wastewater infrastructure for the region, handling domestic and industrial wastewater from the urban area. As a plant serving over 100,000 people, it falls under China's stringent wastewater discharge standards (GB 18918-2002), which require secondary treatment as a minimum. For larger agglomerations, advanced treatment may be mandated to meet local water quality goals, particularly in sensitive watersheds. The treated effluent is discharged into local water bodies that ultimately drain into the Huai River basin, a major river system in eastern China. The Huai River flows eastward into Hongze Lake and then to the Yellow Sea, supporting diverse aquatic ecosystems and providing water for agriculture and industry downstream.

The plant's discharge enters the Huai River basin, which flows through Henan and Anhui provinces into Hongze Lake and eventually the Yellow Sea. The Huai River is ecologically significant, supporting fisheries and wetlands that provide habitat for migratory birds and aquatic species. The region faces challenges from industrial and agricultural runoff, making effective wastewater treatment critical for maintaining water quality and ecosystem health.