Overview
Zhejiang wastewater treatment plant serves Jiangshan City in Zhejiang Province, China, with a population equivalent of 170,000. It operates under China's national wastewater standards for medium-to-large agglomerations.
The Zhejiang wastewater treatment plant is located in Jiangshan City, part of Quzhou Prefecture in Zhejiang Province, China. Serving a population equivalent of 170,000, it falls into the medium-to-large agglomeration category under Chinese wastewater regulations. The plant is situated in the inland region of Zhejiang, away from the coast, and treats municipal wastewater from the urban area. Under China's national wastewater discharge standards (GB 18918-2002), plants of this scale are typically required to achieve at least secondary treatment, with tertiary treatment increasingly mandated for sensitive water bodies. Regulatory expectations for this population tier emphasize nutrient removal and compliance with Class 1A or 1B discharge limits. The treated effluent is discharged into local waterways that ultimately drain into the Qiantang River basin, which flows into the East China Sea near Hangzhou. The plant plays a key role in protecting downstream aquatic ecosystems, including the Qiantang River estuary, which supports diverse fish populations and migratory bird species. Its operation helps reduce nutrient loading and organic pollution in the region's water resources.
Environmental context
The plant discharges into the Qiantang River basin, which flows through Zhejiang Province and empties into the East China Sea. The downstream environment includes the Qiantang River estuary, an ecologically sensitive area that supports diverse aquatic life and serves as a migratory corridor for fish and birds. The plant's treatment performance directly affects water quality in this important coastal ecosystem, where nutrient pollution and algal blooms are management priorities.
Frequently asked questions
The plant is located at Lianhuashan Avenue, Maodun, Qinghu Subdistrict, Jiangshan City, Quzhou Prefecture, Zhejiang Province, China.
The plant serves a population equivalent of 170,000, classifying it as a medium-to-large agglomeration under Chinese wastewater regulations.
The treated effluent is discharged into local waterways that are part of the Qiantang River basin, which ultimately flows into the East China Sea.
The plant operates under China's national wastewater discharge standard GB 18918-2002, which sets limits for pollutants such as COD, BOD, ammonia nitrogen, and phosphorus. For plants serving over 100,000 people, Class 1A or 1B discharge standards are typically required.
For a plant of this scale in China, secondary treatment with nutrient removal is standard, and tertiary treatment is increasingly common to meet stricter discharge limits, especially in sensitive watersheds like the Qiantang River basin.
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