The Study On Simulation Of The Rainfall Runoff Pollution And The Calculation Of Total Pollutants Amount In Qingdao

With controlling the point source pollution gradually, the pollution caused by the non-point source becomes more serious city environment problem at present. It is great meaning to study the variation patterns of urban rainfall quality and calculate total pollutants amount of rainfall. As the only partner city of Beijing Olympic games, Qingdao will be the host city for sailing games. The marine environmental quality in the coastal will be very important criterion for"green"Olympic games. It is special significant to study the total pollutants amount of rainfall runoff and take some effective measures to reduce the amount pollutants for improving water quality environment of the coastal sea water of Qingdao city.Base on the model of urban rainfall runoff quality, the variation patterns of urban rainfall quality of a storm on July 3rd 2006 is simulated in Qingdao. Calculating the total pollutants amount (SS,TP, N-NH3 and COD) ,and further more, estimating the total quantity of various contaminations in 2006. Finally, it has proposed the urban rainfall runoff contamination controlling measure, method and principle, which provide the reference for the department to planning and designs the urban rain water runoff management system.The results show that:(1) Base on the model of urban rainfall runoff quality, the variation patterns of urban rainfall quality of a storm on July 3rd 2006 is simulated in Qingdao. The modeling give a reasonable explanation to the generation of the runoff the pollution in the urban area, with the most error is no more than 20%.(2) The total pollutants amount in this rainfall are: SS:219.6t,TP:1.47t,N-NH3:7.2 t,COD:150.5t.(3) The total pollutants amount in 2006 is calculated as: SS:2000t/a,TP:15t/a,N-NH3:70t/a,COD:1500t/a . Compared with Institute of environmental protect science of Qingdao , the result is reasonable. The model will be a good tool for predicting the total pollutants amount of urban rainfall runoff, and the predicting data can provide the reference for the department of government.