Zhejiang Wastewater Treatment Plant, Xiaoshan District, Hangzhou

The Zhejiang wastewater treatment plant is located in Xiaoshan District, Hangzhou, within Zhejiang Province, China. The facility serves a population of 250,000, classifying it as a large agglomeration under Chinese wastewater management standards. The plant's designed capacity is 1. As a large-scale municipal plant in China, it operates under national wastewater discharge standards, which typically require secondary treatment as a minimum. For plants serving over 100,000 people, advanced treatment may be mandated in sensitive areas to reduce nutrient loads and protect receiving water bodies. Its scale suggests compliance with regulatory requirements for effluent quality. The plant discharges treated wastewater into local water bodies that eventually drain into the East China Sea via the Qiantang River system. This region is ecologically significant, supporting diverse aquatic life and serving as a migratory corridor for fish species. The plant's location in a densely populated urban area underscores the importance of effective wastewater management to protect downstream ecosystems and water quality.

The plant's treated effluent flows into the Qiantang River, which empties into Hangzhou Bay and ultimately the East China Sea. This watershed supports a rich aquatic ecosystem, including important fisheries and migratory fish species. The area is subject to tidal influences and seasonal variations, making nutrient management critical to prevent eutrophication in coastal waters.