工业点源参数对污染物最大落地浓度的影响

Study on Relationship between the Parameters of Point Source Emissions and the Maximum Ground- level Concentration

利用AERMOD模型对平原型工业点源进行模拟计算,首先采用单因素试验法对各点源参数与污染物最大落地浓度的关系进行了分析,然后通过正交试验考察了AERMOD预测结果对点源各参数变化的敏感性。结论表明,点源参数在一定范围内调整时,排气筒高度对污染物最大落地浓度影响最显著,其次是污染物源强,排气筒内径和烟气量对污染物最大落地浓度的影响相对较小。

The AERMOD model was used to simulate the pollution process of point source emissions in plain region.The relationship between the parameters of point source and the maximum ground- level concentration was tested through single factor method,and then sensitivity of each point source parameters to AERMOD operation results were analyzed through orthogonal method. The results showed that when point source parameters were adjusted within a certain range,the most significant factor for maximum ground- level concentration was the height of stack,followed by pollutant source intensity,while the stack inner dimension and flue gas volume had relatively little influence on the operation results.