AERMOD与估算模式在环境影响评价中的应用与比较研究

简单描述了大气环境影响评价中的AERMOD模型及估算模式,采用这两种预测模式对同一生活垃圾填埋场无组织排放的NH3、H2S进行了预测。比较两种模式的预测结果可以看出,估算模式仅能预测小时值,AERMOD模式可同时预测小时值、日平均值、年平均值。在污染源、预测范围、运行周期相同的情况下,不论哪种预测模式,污染物的最大落地浓度均与排放源强呈正比,敏感点处的落地浓度均与污染物源强呈正比、与距离呈反比。预测结果同时说明,估算模式是一种保守的预测模式,其预测结果比AERMOD模式大,可作为进一步预测模式的有效补充。

Application and Comparison between AERMOD and Estimation Model in EIA

The article described the AERMOD and estimation model, and forecasted the unorganized emissions of H3 and H2S in the same municipal solid wastes by using these two models. Comparing two predictions, it is concluded that estimation model can only predict the hourly concentrations, but the AERMOD can predict the hourly concentrations, the daily average con- centrations and the yearly average concentrations. When pollutant sources, estimation range and cycles are the same. No matter which prediction model, the maximum ground concentration of pollutants are proportional to the pollutants emissions, the ground concentrations of sensitive places are proportional to the pollutants emissions and inversely proportional to the distance. The results suggested that estimation model is a conservative prediction model, the prediction is more than the AERMOD. Etimation model can be used as an effective supplement for further forecasting models.