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文中列出了重庆市污染源现状及目前长江重庆段的水质情况,并指出已形成了约30km的岸边污染带。分析了三峡蓄水后对重庆江段水质影响,选取重庆空压机厂排污口为代表,用数学模型,以COD_(cr)为例,计算了污染带控点浓度的变化。蓄水后,浓度由11.14mg/l增加到49.4mg/l,污染带长度从4km增至10km。文中进行了污染物质削减量计算,计算的样本为蓄水前7个超标排污口及蓄水后14个超标排污口。文中指出,由于三峡建库,需要削减的污水量为重应全市的十分之一。文章最后为污染防治的对策措施。着重指出,重庆是长江上游的经济中心,山城以其独特的景色吸引中外人士,保护重庆的水环境更具有深远的意义。
The article lists the status quo of pollution sources in Chongqing and the current water quality in the Chongqing section of the Yangtze River and points out that a pollution zone of about 30 km has been formed. After the impoundment of the Three Gorges Project on the Chongqing section of the water quality impact, select the Chongqing air compressor factory sewage outfall as a representative, using mathematical models to COD cr (cr) as an example, the pollution control point concentration changes. After water storage, the concentration increased from 11.14mg / l to 49.4mg / l, the pollution zone length increased from 4km to 10km. In the paper, the reduction of pollutants was calculated. The calculated samples were seven out-of-standard sewage outfalls and 14 out-of-standard outfalls after impoundment. The article pointed out that due to the Three Gorges reservoir construction, the amount of wastewater that needs to be reduced to one-tenth of the city. The article is the last pollution control measures. It is emphasized that Chongqing is the economic center of the upper reaches of the Yangtze River and that Mountain City attracts Chinese and foreigners with its unique scenery and protects the water environment in Chongqing more profoundly.