Henan Wastewater Treatment Plant, Xiayi County, Henan Province, China

The Henan wastewater treatment plant is located in Xiayi County, Shangqiu City, Henan Province, China. It serves a population of approximately 79,200 people, classifying it as a medium-sized municipal facility within the region's wastewater infrastructure. As a Chinese wastewater treatment plant, it operates under the national standards set by the Ministry of Ecology and Environment, which mandate appropriate treatment levels based on discharge location and population served. For agglomerations of this scale, secondary treatment is typically required, with potential nutrient removal in sensitive areas. The plant's treated effluent is discharged into local water bodies that eventually flow into the Huai River basin, a major watershed in eastern China. The Huai River system supports extensive agricultural irrigation and provides drinking water for millions, making effective wastewater treatment critical for protecting downstream water quality and aquatic ecosystems.

The plant discharges into local waterways that are part of the Huai River basin, which drains into the Yellow Sea via the Hongze Lake and the Yangtze River. The Huai River basin is ecologically significant, supporting diverse aquatic life and providing water for agriculture and industry. Effective treatment is essential to prevent eutrophication and protect downstream communities and ecosystems.