Zhejiang Wastewater Treatment Plant, Yiwu, Zhejiang Province, China

The Zhejiang wastewater treatment plant is located in Yiwu City, within Jinhua City, Zhejiang Province, China. It serves a population of approximately 100,000, classifying it as a medium-sized municipal facility. The plant is situated in the interior of Zhejiang, away from the coast, and its treated effluent likely discharges into local rivers that eventually flow into the East China Sea. 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 100,000 people, secondary treatment with nutrient removal is typically required to meet Class 1-A or 1-B standards, depending on the sensitivity of the receiving water body. The regulatory framework ensures compliance with environmental protection goals. The plant's discharge contributes to the protection of local water bodies, likely including the Dongyang River or other tributaries of the Qiantang River basin. These waters flow into Hangzhou Bay and ultimately the East China Sea. The plant plays a key role in maintaining water quality in a densely populated urban area, supporting downstream aquatic life and reducing pollution loads to the marine environment.

The Zhejiang plant discharges into local rivers within the Qiantang River basin, which flows through Zhejiang Province into Hangzhou Bay and the East China Sea. The downstream environment supports diverse aquatic ecosystems and is important for regional fisheries and coastal water quality. The plant's treatment helps mitigate nutrient pollution that could otherwise contribute to eutrophication in the bay.