[Pollutant source apportionment of combined sewer overflows using chemical mass balance method].
Pollutant characteristics of surface runoff, sanitary sewage and sewer deposits from a combined sewer system in Shanghai were studied. It was confirmed that the content of Zn, NH4(+) -N, P, respectively in surface runoff, sanitary sewage and sewer deposits was specific and relatively stable based on contrasting pollutant characteristics of different sources. Three non-dimensional parameters-Zn/P, NH4(+) -N/Zn, P/K were proposed as characteristic index for surface runoff, sanitary sewage and sewer deposits. In order to find sources of pollutants in CSO, the application of chemical mass balance method was discussed: the average contributions to CSO were 42.8% for surface runoff, 12.2% for sanitary sewage, 23.8% for sewer deposits, and the results basically reflected the composition of CSO pollution. The research method and results can provide guidance for pollutant source apportionment of combined sewer overflows.
State Key Laboratory of Pollution Control and Resource Reuse, Tongii University, Shanghai 200092, China. dmh1027@126.com
Mei-Hong
MH
Dai
State Key Laboratory of Pollution Control and Resource Reuse, Tongii University, Shanghai 200092, China.
Tian
T
Li
State Key Laboratory of Pollution Control and Resource Reuse, Tongii University, Shanghai 200092, China.
Wei
W
Zhang
D002681:China; D012722:Sewage / Q000032:analysis*; D014876:Water Pollution / Q000032:analysis*
D012722:Sewage