Overview
The Sichuan wastewater treatment plant in Dujiangyan, Chengdu, Sichuan, China, serves approximately 196,600 people. It is located inland, over 50 km from the coast, and discharges into local water bodies.
The Sichuan wastewater treatment plant is situated in Dujiangyan, a city in the Chengdu metropolitan area of Sichuan Province, China. The plant serves a population of around 196,600, classifying it as a medium-to-large agglomeration under Chinese wastewater management standards. Its location in the upper reaches of the Min River basin places it in a region known for the Dujiangyan irrigation system, a UNESCO World Heritage site, though the plant itself is not within that protected area. As a facility serving nearly 200,000 people, 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 of this scale. Typical facilities in this region employ activated sludge processes with biological nitrogen and phosphorus removal to comply with Class 1A or 1B standards. The treated effluent from the plant likely discharges into the Min River, a major tributary of the Yangtze River. The Min River flows southward through the Sichuan Basin, eventually joining the Yangtze at Yibin. This waterway supports diverse aquatic life and provides water for agriculture and urban use downstream. The plant's performance is critical for protecting the ecological health of the Min River and the broader Yangtze River basin.
Environmental context
The plant discharges into the Min River, which flows through the Sichuan Basin and joins the Yangtze River at Yibin. The Min River is a vital water source for irrigation, industry, and domestic use in the region. Downstream ecosystems include wetlands and fish habitats that depend on good water quality. The plant's location in a seismically active area adds importance to robust infrastructure to prevent spills.
Frequently asked questions
The plant is located in Dujiangyan, a city in the Chengdu metropolitan area of Sichuan Province, China. Its address is near the Chengdu Metropolitan Ring Expressway in Yutang Subdistrict.
The plant serves approximately 196,600 people, classifying it as a medium-to-large agglomeration under Chinese wastewater management standards.
The plant discharges into the Min River, a major tributary of the Yangtze River. By treating wastewater, it helps protect the water quality of the Min River and downstream ecosystems in the Yangtze basin.
The plant operates under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). For a plant serving nearly 200,000 people, secondary treatment with nutrient removal is typically required to meet Class 1A or 1B standards.
Plants of this scale in China commonly use activated sludge processes with biological nitrogen and phosphorus removal. Advanced treatment like membrane filtration or UV disinfection may be added to meet stricter local discharge limits.
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