Overview
The Chongqing wastewater treatment plant serves 150,000 people in Jiangjin District, Chongqing, China. It operates under China's national wastewater standards, discharging treated effluent into the Yangtze River basin.
The Chongqing wastewater treatment plant is located in Jiangjin District, a suburban area of the Chongqing municipality in southwestern China. It serves a population of approximately 150,000, classifying it as a medium-to-large agglomeration under Chinese wastewater management frameworks. The plant is situated in the upper reaches of the Yangtze River basin, a region characterized by hilly terrain and a subtropical monsoon climate. The plant is expected to comply with China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants (GB 18918-2002). For plants serving populations of this scale, secondary biological treatment with nutrient removal is typical, especially given the ecological sensitivity of the Yangtze River. The plant's designed capacity and actual discharge volume are not disclosed, but its operational context suggests it plays a key role in local water pollution control. The treated effluent from the plant ultimately discharges into the Yangtze River, which flows eastward through central China before reaching the East China Sea near Shanghai. The Yangtze basin supports diverse aquatic life, including endangered species such as the Chinese sturgeon and finless porpoise. The plant's performance is critical for maintaining water quality in this major river system, which supplies drinking water to millions downstream.
Environmental context
The plant discharges into the Yangtze River, China's longest waterway, which flows from the Tibetan Plateau to the East China Sea. The upper Yangtze basin near Chongqing is ecologically sensitive, supporting diverse fish populations and serving as a migratory corridor for aquatic species. Downstream, the river passes through densely populated regions and industrial zones, making nutrient and pollutant control essential for preventing eutrophication and protecting drinking water sources.
Frequently asked questions
The plant is located in Jiangjin District, Chongqing, China, near the Yangtze River.
The plant serves approximately 150,000 people in the Jiangjin District area.
The treated effluent is discharged into the Yangtze River, which flows to the East China Sea.
The plant must comply with China's GB 18918-2002 discharge standard, which sets limits for pollutants like COD, ammonia, and phosphorus. For plants of this scale, secondary treatment with nutrient removal is typically required.
China's wastewater treatment is governed by national standards and local environmental protection bureaus. Plants serving over 100,000 people are considered large agglomerations and are expected to achieve advanced treatment levels, especially in ecologically sensitive basins like the Yangtze.
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