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The existing coefficient of urban domestic sewage production cannot reflect the differences among regions. It is difficult to meet the needs of environmental protection work in Shanghai. This study divided Shanghai into three tiers. According to the 2017 on-line monitoring data of urban sewage treatment plants in main urban areas, Xincheng district and Xinshi town, the concentration of pollutants of each tier was calculated. And the production coefficients of urban domestic source pollutants at all tiers in Shanghai was obtained by combining with the urban per capita comprehensive domestic water consumption. The results showed that the CODcr concentration changes in Xincheng district were relatively large, and that changes in the main urban area and Xinshi town were relatively small. The pollutant production coefficients of the main urban area, Xincheng district and Xinshi town were COD cr : 75.6 g/d.cap, 66.95 g/d.cap, 28.02 g/d.cap, NH 3 -N: 7.76 g/d.cap, 5.32 g/d.cap, 2.04 g/d.cap.

Study on Water Quality Characteristics and Production Coefficients of Urban Domestic Sewage in Shanghai