基于AERMOD模式的重点行业排气筒高度变化敏感性分析  

Sensitive Analysis on the Chimney Height Change of Key Industry on AERMOD Model

作　　者：陈陆霞 易爱华 CHEN Luxia;YI Aihua(Beijing Shangyun Environment Co.,Ltd.,Beoiong100081,Chona;Environmental Engineering Assessment Center,Ministry of Ecology and Environment,Beijing 100012,Chona;State Environmental Protection Key Laboratory of Numerical Modelling for Environment Impact Assessment,Beoiong100012,Chona)

机构地区：[1]北京尚云环境有限公司,北京100081 [2]生态环境部环境工程评估中心,北京100012 [3]国家环境保护环境影响评价数值模拟重点实验室,北京100012

出　　处：《环境影响评价》2020年第3期48-51,62,共5页Environmental Impact Assessment

基　　金：国家重点研发计划《法规空气质量模型技术体系研究》项目(NO.2018YFC0213500)。

摘　　要：利用AERMOD模式,选择13个重点行业共计18份环境影响评价报告,对排气筒高度按照不同比例降低后,污染物最大小时浓度及其出现距离的变化情况进行模拟研究。研究结果表明,当排气筒高度降低幅度超过10%时,污染物最大小时浓度增长率明显加快;排气筒高度降低幅度超过20%时,污染物最大小时浓度增长率显著增大。基于本次研究网格间距的设置,当排气筒高度小于30m时,污染物最大小时浓度落地点距污染源距离基本与排气筒高度变化无关;当排气筒高度介于70m^110m之间时,排气筒高度越低,最大小时浓度落地点距污染源距离越远;当排气筒高度介于30m^70m或大于110m时,排气筒高度越低,最大小时浓度落地点与污染源距离越近。18 environmental impact assessment reports were choosed from 13 key industries.Taking these reports and AERMOD model,the maximum hourly concentration and their appearance distance were simulated after the chimney height variation was decreased in different portion.The results showed that, when the height was reduced by more than 10%, the growth rate of pollutant maximum hourly concentration was increased obviously,when the height was reduced by more than 20%, a significant increase occurred. Based on this grid spacing settings,when the chimney height was less than 30 m, the distance between the falling point of the maximum hourly concentration and the pollution source was independent of the change of the height. When the height was between 70 m^110 m, the lower the height was, the farther away the maximum concentration drop place. And, when the height was between 30 m^70 m or more than 110 m, the lower the height, the closer that drop places.

关 键 词：排气筒高度变化 敏感性分析 AERMOD模式 

分 类 号：X505[环境科学与工程—环境工程]