Overview
Zhejiang wastewater treatment plant serves Lanxi City in Zhejiang Province, China, with a population of 30,000. The plant discharges treated water into local waterways within the Qiantang River basin.
The Zhejiang wastewater treatment plant is located in Lanxi City, part of Jinhua City in Zhejiang Province, China. It serves a population of approximately 30,000 people, placing it in the medium agglomeration category for Chinese wastewater infrastructure. As a municipal facility in China, the plant operates under national wastewater discharge standards (GB 18918-2002) and local environmental regulations. For plants serving populations of this scale, secondary treatment with nutrient removal is typically required to meet Class 1-A or 1-B effluent standards, depending on the sensitivity of the receiving water body. The plant's treated effluent is discharged into the local river system, which flows into the Qiantang River and eventually reaches the East China Sea near Hangzhou Bay. This watershed supports diverse aquatic life and provides water for agricultural and industrial use downstream, making effective treatment essential for regional water quality.
Environmental context
The plant discharges into the Qiantang River basin, which flows through Zhejiang Province into Hangzhou Bay and the East China Sea. This watershed supports important fisheries and provides drinking water for millions of people. The downstream environment includes tidal estuaries and coastal wetlands that are ecologically sensitive, requiring effective nutrient removal to prevent eutrophication and protect marine habitats.
Frequently asked questions
The plant is located near Hengshan Bridge in Lanxi City, Jinhua City, Zhejiang Province, China.
The plant serves approximately 30,000 people in the Lanxi City area.
The plant discharges into the local river system within the Qiantang River basin, which flows into Hangzhou Bay and the East China Sea.
The plant operates under China's national discharge standard GB 18918-2002, which sets limits for pollutants like COD, ammonia, and phosphorus. Plants serving 30,000 people typically require secondary treatment with nutrient removal to meet Class 1-A or 1-B standards.
For medium-sized agglomerations in China, conventional activated sludge processes with biological nutrient removal are common. Advanced treatment such as filtration or disinfection may be added if the receiving water body is sensitive.
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