Henan Wastewater Treatment Plant, Nanyang, Henan, China

The Henan wastewater treatment plant is located in Sheqi County, Nanyang City, Henan Province, China. It serves a population of approximately 65,000 people, classifying it as a medium-sized municipal facility under Chinese wastewater management standards. As a plant in China, it operates under the national Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), which sets effluent limits for conventional pollutants and nutrients. For a facility serving this population size, secondary treatment with nutrient removal is typically required to meet environmental standards. The plant discharges treated effluent into local waterways that eventually drain into the Yangtze River basin via the Han River system. This watershed supports diverse aquatic life and provides water for agricultural and municipal use downstream. Proper treatment is essential to protect water quality in this ecologically significant region.

The plant's treated effluent flows into local tributaries of the Han River, a major tributary of the Yangtze River. The Han River basin supports diverse aquatic ecosystems and provides drinking water for millions of people. Downstream, the Yangtze River estuary is an ecologically sensitive area that supports fisheries and migratory bird populations. Effective wastewater treatment helps reduce nutrient loading and protect these downstream environments.