Abstract:

Recently the accidental water pollution happened frequently in China.The safety of water quality of the Yangtze River,one of the most important water resources in China,is threatened by multiple industrial enterprises along the river,in which the pollution accidents may possibly break out.As a result,it is important to develop the forecasting and warning research of the accidental water pollution effect of Nanjing Industrial and Chemical Park.Based on the EFDC and WASP,a forecasting model for the accidental water pollution effect in Nanjing Industrial and Chemical Park was developed.The functionality of the model was illustrated through an emergency scenario of toluene spilling in the Long Xiang enterprise.The result shows that the forecasting model proposed is capable of rapid simulation and forecasting for water environmental behavior of contaminants released in water pollution accidents;besides,the range and extent of the accident effect can be displayed in real time in the form of animation on the GIS layer.The research is utilized to aid decisionmaking for accidental water pollution warning and rehearsing in Nanjing Industrial and Chemical Park.The 2dimension water dynamic model can precisely describe the hydrodynamic field in study area.The toluene released in the scenario was diluting and diffusing rapidly in the study area and influenced dramatically due to volatilization.Compared with lowwater period,the meanwater period was more advantageous in the attenuation of toluene in water