Overview
Zhejiang wastewater treatment plant serves 380,000 people in Liandu District, Lishui City, Zhejiang Province, China. It operates under China's national wastewater standards for large urban agglomerations.
The Zhejiang wastewater treatment plant is located in Liandu District, Lishui City, Zhejiang Province, China. It serves a population of 380,000, classifying it as a large urban agglomeration under Chinese wastewater management frameworks. The plant is situated in the mountainous region of southwestern Zhejiang, near the Oujiang River basin. As a large-scale facility, the plant is expected to meet China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which mandates secondary treatment with nutrient removal for plants serving over 100,000 people. Typical facilities of this scale employ activated sludge processes with biological nitrogen and phosphorus removal to comply with Class 1A or 1B discharge limits. The plant discharges treated effluent into local waterways that ultimately drain into the Oujiang River and then into the East China Sea. The downstream environment supports diverse aquatic life and is important for regional fisheries and agriculture. The plant plays a critical role in protecting water quality in the Oujiang watershed, which supplies drinking water and irrigation to millions in southern Zhejiang.
Environmental context
The plant discharges into the Oujiang River basin, which flows through Lishui and Wenzhou before emptying into the East China Sea. The Oujiang is a major river in Zhejiang, supporting diverse aquatic ecosystems and providing water for agriculture and industry. The downstream estuary and coastal zone are ecologically sensitive, hosting migratory fish species and important wetland habitats. Effective wastewater treatment is essential to prevent eutrophication and protect marine biodiversity in the East China Sea.
Frequently asked questions
The plant is located in Liandu District, Lishui City, Zhejiang Province, China, near the Oujiang River basin.
The plant serves 380,000 people, classifying it as a large urban agglomeration.
The plant discharges treated effluent into local waterways that flow into the Oujiang River and eventually the East China Sea.
The plant operates under China's GB 18918-2002 standard, which requires secondary treatment with nutrient removal for large facilities.
Typical treatment includes activated sludge processes with biological nitrogen and phosphorus removal to meet Class 1A or 1B discharge limits.
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