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

The Henan wastewater treatment plant is located in Huaibin County, Xinyang City, Henan Province, China, along Jianghuai Road. It serves a population of approximately 91,500 residents, making it a medium-sized municipal facility. The plant is situated inland, more than 50 km from the coast, and its operations are part of China's broader efforts to manage water quality in the Huai River basin. Under China's national wastewater treatment standards, plants serving populations over 50,000 are typically required to achieve at least secondary treatment, with some requiring advanced treatment to meet local discharge limits. It operates within China's regulatory framework, which includes the Water Pollution Prevention and Control Law and discharge standards such as GB 18918-2002. The treated effluent from the plant is discharged into local rivers that eventually flow into the Huai River, one of China's major water bodies. The Huai River basin supports diverse aquatic life and provides water for agriculture, industry, and drinking water downstream. Protecting this watershed is critical for regional ecological health and water security.

The plant discharges into the Huai River basin, which drains into the Yellow Sea via the Huai River and its tributaries. The Huai River is a major waterway in eastern China, supporting a dense population and intensive agriculture. The river's ecological health is sensitive to nutrient pollution and industrial contaminants, making effective wastewater treatment essential for maintaining water quality and biodiversity in the downstream environment.