Anhui Wastewater Treatment Plant, Yingquan District, Fuyang, Anhui Province, China

The Anhui wastewater treatment plant is located in Yingquan District, Fuyang City, Anhui Province, China. It serves a population equivalent of 150,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management frameworks. The plant is situated inland, approximately 50 km from the coast, and discharges into local water bodies that ultimately drain into the East China Sea. As a facility serving 150,000 people, the plant is expected to meet secondary treatment standards under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). This national regulation sets effluent limits for biochemical oxygen demand, chemical oxygen demand, suspended solids, and nutrients, with stricter requirements for plants discharging into sensitive water bodies. Typical facilities of this scale employ activated sludge or similar biological treatment systems. The plant's receiving water body is part of the Huai River basin, a major watershed in eastern China. The Huai River flows through Anhui and Jiangsu provinces before emptying into the Yellow Sea. The river supports extensive agricultural irrigation and provides drinking water for millions. Downstream ecosystems include wetlands and lakes that are critical for migratory birds and aquatic biodiversity. Proper treatment at this plant helps reduce nutrient loading and protects water quality in the Huai River system.

The plant discharges into the Huai River basin, which flows through Anhui and Jiangsu provinces into the Yellow Sea. The Huai River is a major water source for agriculture and domestic use in the region. Downstream areas include shallow lakes and wetlands that support diverse aquatic life and serve as important stopover sites for migratory waterfowl. Nutrient pollution from untreated wastewater could contribute to eutrophication in these sensitive ecosystems.