Research On The Diffusion Simulation Of Atmospheric Point Source Pollution

In recent years,with the rapid development of social economy and industry,the environment problems become increasingly serious,the pollution of atmosphere and soils has been a serious threat to human health,especially the air pollution affects most directly and inevitably.In order to control air pollution problems effectively,we must make a scientific evaluation of the quality of atmosphere firstly,then choose the right model to make simulation prediction to the spread of pollutants,can to the atmospheric pollution is the most intuitive understanding,how can effectively reduce atmospheric pollution provide strong theoretical support.The key to the evaluation of the atmospheric quality and the diffusion simulation of pollutants is to select the appropriate diffusion simulation and the appropriate parameters according to the actual situation.Based on the previous research results,this paper mainly carries out the following research.HuBei Jinglan cement group co.,LTD.,as one of the state-controlled emissions enterprises,influences the air pollution on the surrounding area.Therefore simulation of the atmospheric pollutants diffusion can provide the same type of enterprises and construction of pollutant has a certain theoretical and practical significance.Based on the enterprise as the research object,this paper selects the PM 10,TSP,S02,N02 as evaluation factors,based on weights with the regional difference of pollution factor to assign a value ideas of variable weight based on GIS is the weighted average model to evaluate the air quality around the factory,the results show that the results are more accurate reflect the atmospheric pollution status in the study area.According to the comparative study of the diffusion model and the characteristics of the study area and the emission source,using the gaussian continuous point source diffusion model,according to the actual situation of the important parameters in the model is reasonable,which focuses on the determination of the model and the parameters and the application.Used to determine the model for the study area of concentration of gaseous pollutants and sedimentation particle pollution diffusion simulation,the simulation value and the monitoring value analysis,after verification with the consideration of settlement and the interaction of simulated values accord with actual basic,proved that the revised model can be used to simulate the atmospheric pollution diffusion in the study area.In addition,the use of soil sampling data of soil heavy metal pollution levels in the study area is evaluated,the simulation of atmospheric fallout particles and heavy metals in the soil and Pearson correlation analysis and grey correlation analysis,it is concluded that there are some relativity between the two.