Zhejiang Wastewater Treatment Plant, Dongyang | China

The Zhejiang wastewater treatment plant is located in Dongyang City, within Jinhua Prefecture, Zhejiang Province, China. It serves a population of approximately 40,000, classifying it as a medium-sized municipal facility in the region. As a Chinese wastewater treatment plant, it operates under the national Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which sets effluent limits for conventional pollutants, nutrients, and pathogens. For plants serving populations of this scale, 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 plant's treated effluent is discharged into local waterways that ultimately drain into the East China Sea via the Qiantang River basin. This region supports diverse aquatic life and is important for downstream fisheries and coastal water quality. Proper treatment helps protect the ecological health of the watershed.

The plant discharges into the Qiantang River basin, which flows through Zhejiang Province and empties into Hangzhou Bay and the East China Sea. This watershed supports important fisheries and migratory bird habitats. Effective nutrient removal is critical to prevent eutrophication in coastal waters and maintain water quality for downstream communities and ecosystems.