Henan Wastewater Treatment Plant, Nanzhao County, Henan Province

The Henan wastewater treatment plant is located in Nanzhao County, Nanyang City, Henan Province, China. It serves a population of approximately 57,000, 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 Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). For a facility serving this population size, secondary treatment with nutrient removal is typically required to meet Class 1-A or 1-B standards, depending on the receiving water body's sensitivity. The plant's treated effluent likely discharges into a local river within the Yangtze River basin, which ultimately flows into the East China Sea. The facility plays a key role in protecting downstream water quality and aquatic ecosystems in Henan Province.

The plant's discharge enters a tributary of the Yangtze River system, which flows through central China before reaching the East China Sea. This watershed supports diverse aquatic life and provides water for agriculture and communities downstream. Proper treatment is essential to prevent eutrophication and maintain ecological balance in the river network.