Identification and monitoring of dispersion pathways in the early warning system for toxic and hazardous gases in chemical parks
Accurate identification and monitoring of dispersion pathways is an important prerequisite for the function of the early warning system for toxic and hazardous gases in chemical parks,which is of great significance in promoting the upgrading of the warning capability of chemical parks and reducing the occurrence of sudden environmental risk accidents.The"three fixed methods"(meteorological orientation-trajectory determination-simulation location)were constructed to scientifically and accurately identify the location of toxic and hazardous gas dispersion pathway monitoring stations in the chemical park based on CALPUFF model.Taking the pilot project of the early warning system for toxic and hazardous gases in Jiaxing Port area as an example,there were five main dispersion pathways of toxic and hazardous gases in the park.By further integrating meteorological analysis,distribution of surrounding sensitive areas and CALPUFF model dispersion simulation results,it was finally determined that the dispersion pathway monitoring station of the park's toxic and hazardous gas warning system was deployed at the point with the largest landing concentrations within the pathway Ⅰ area with the highest dispersion ratio.
toxic and hazardous gasesenvironmental riskCALPUFF modeldispersion pathway monitoring stationsJiaxing Port area
NETL
NSTL
万方数据
