Overview
Sichuan wastewater treatment plant serves 302,000 people in Jiangnan Subdistrict, Langzhong City, Sichuan, China. The facility operates under China's national wastewater standards for large agglomerations.
The Sichuan wastewater treatment plant is located in Jiangnan Subdistrict, Langzhong City, within Sichuan Province, China. It serves a population of 302,000, classifying it as a large agglomeration under Chinese wastewater management frameworks. The plant is situated near the Jialing River, a major tributary of the Yangtze River, and plays a key role in protecting downstream water quality. 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 sensitive water bodies. Regulatory requirements for this population tier typically involve biological treatment followed by disinfection. The treated effluent likely discharges into the Jialing River, which flows into the Yangtze River at Chongqing. The Yangtze River basin supports diverse aquatic ecosystems and provides drinking water for millions downstream. Effective treatment at this plant is critical for reducing nutrient loads and protecting the ecological health of the Jialing-Yangtze system.
Environmental context
The plant discharges into the Jialing River, a major tributary of the Yangtze River, which ultimately flows into the East China Sea. The Jialing River basin supports diverse aquatic life and is an important water source for agriculture and communities. Downstream, the Yangtze River is ecologically sensitive, hosting species such as the Chinese sturgeon and finless porpoise. Nutrient pollution from untreated wastewater can lead to eutrophication, so advanced treatment is essential for maintaining water quality in this densely populated region.
Frequently asked questions
The plant is located in Jiangnan Subdistrict, Langzhong City, Sichuan Province, China, near the Jialing River.
The plant serves approximately 302,000 people, classifying it as a large agglomeration under Chinese wastewater regulations.
The plant treats wastewater that would otherwise enter the Jialing River, a tributary of the Yangtze River, helping to protect both water bodies from pollution.
The plant operates under China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002), which requires secondary treatment with nutrient removal for large agglomerations to protect sensitive water bodies.
Plants of this scale in China typically employ biological treatment processes such as activated sludge, followed by disinfection. Advanced nutrient removal is often required to meet discharge standards for rivers like the Jialing.
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