Zhejiang Wastewater Treatment Plant, Shangcheng District, Hangzhou

The Zhejiang wastewater treatment plant is located in the Shangcheng District of Hangzhou, within Zhejiang Province, China. It serves a population of 150,000, classifying it as a large agglomeration under Chinese wastewater management frameworks. The plant is situated in an urban area near the Qiantang River basin, which ultimately drains into the East China Sea. As a facility serving over 100,000 people, the plant is expected to meet secondary or advanced treatment standards as per China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). Chinese regulations require such plants to achieve pollutant removal rates that protect receiving water bodies, with stricter limits for plants discharging into sensitive waters. The plant's operational context aligns with national efforts to improve water quality in densely populated urban centers. The treated effluent from this plant likely discharges into local waterways connected to the Qiantang River system, which flows into Hangzhou Bay and then the East China Sea. This coastal region supports diverse aquatic life and is an important ecological zone. The plant plays a critical role in reducing nutrient and pollutant loads, helping to mitigate eutrophication risks in the downstream marine environment.

The plant discharges into the Qiantang River watershed, which flows through Hangzhou Bay into the East China Sea. This coastal environment supports diverse marine life and is subject to seasonal algal blooms influenced by nutrient inputs. The plant's treatment performance directly affects water quality in this ecologically sensitive area, which is important for local fisheries and biodiversity.