Henan Wastewater Treatment Plant, Weidong District, Pingdingshan, Henan Province, China

The Henan wastewater treatment plant is located in Pucheng Subdistrict, Weidong District, Pingdingshan City, Henan Province, China. It serves a population of approximately 646,000, classifying it as a large-scale municipal facility within the region. The plant is part of China's extensive wastewater infrastructure, which is regulated under the national Water Pollution Prevention and Control Law. As a large agglomeration serving over 600,000 people, the plant is expected to meet stringent discharge standards under China's pollutant discharge permit system. The facility likely employs secondary or advanced treatment processes to comply with the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which mandates specific limits for COD, BOD, ammonia nitrogen, and total phosphorus. The plant discharges treated effluent 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 the Yellow Sea, supporting agricultural irrigation, industrial use, and aquatic ecosystems. Proper treatment at this plant helps protect downstream water quality and biodiversity in the Huai River watershed.

The plant's treated effluent enters local waterways within the Huai River basin, which drains into the Yellow Sea. The Huai River system supports diverse aquatic life and provides water for agriculture and industry in Henan Province. Effective wastewater treatment is critical to prevent eutrophication and maintain ecological balance in this densely populated and agriculturally intensive region.