Zhejiang Wastewater Treatment Plant, Anji County, Zhejiang Province

The Zhejiang wastewater treatment plant is located in Anji County, Huzhou City, Zhejiang Province, China. It serves a population of approximately 170,000 people, classifying it as a medium-to-large agglomeration under Chinese wastewater management standards. The plant is situated in the Changshuo Street area, a key urban zone within the county. As a facility serving over 100,000 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 regulation sets effluent limits for biochemical oxygen demand, chemical oxygen demand, suspended solids, and nutrients. Facilities of this scale typically employ activated sludge processes or similar biological treatment methods. The plant discharges treated effluent into local water bodies that eventually drain into the East China Sea via the Yangtze River Delta system. The region's dense population and industrial activity place importance on effective wastewater treatment to protect downstream aquatic ecosystems and water quality in the broader Yangtze River basin.

The plant's treated effluent flows into local waterways within the Yangtze River basin, ultimately reaching the East China Sea. This watershed supports diverse aquatic life and provides water for agriculture and industry. The region's subtropical climate with seasonal rainfall can affect dilution capacity, making consistent treatment important for maintaining ecological balance in downstream rivers and coastal areas.