基于AERMOD模式的固定源对不同楼层大气污染预测研究  

Air pollution prediction of fix pollution source on different floors of building based on AERMOD

作　　者：伯鑫[1,2] 武士蓉[3] 丁峰[1,2] 刘梦[4] 

机构地区：[1]环境保护部环境工程评估中心,北京100012 [2]国家环境保护环境影响评价数值模拟重点实验室,北京100012 [3]北京师范大学环境学院,北京100875 [4]清华大学环境学院,北京100084

出　　处：《环境污染与防治》2013年第9期49-53,共5页Environmental Pollution & Control

基　　金：国家环保公益性行业科研专项(No.201309062)

摘　　要：环境影响评价中,大气污染预测通常考虑地面的浓度影响,对高层住宅楼不同楼层影响的考虑较少。通过案例设计,模拟4种不同的污染排放情景,采用预测推荐模式AERMOD分别计算各情景下5个代表高度共20种组合情况的预测受体结果,并基于三维可视仪软件VOXLER直观显示各情景污染物浓度的空间连续分布情况,对小时最大浓度的分布规律利用分析工具CANOCO进行了分析。结果表明:(1)污染源高为15～80m时,不同楼层间小时浓度分布差异性较大;污染源高为120～240m时,楼层间差异性较小。(2)污染源高为15m时,小时最大浓度以50m为分界线随楼层高度的增加先增后降;污染源高为80～240m时,小时最大浓度随楼层高度的增加而增加。A Air pollution predictions of environmental impact assessment only consider surface pollutant concen tration,but give less concern on the pollutant concentration at different floors of city buildings. In this paper, four pollutant discharge scenarios were simulated in a case design, and AERMOD model was applied to simulate twenty kinds of combination receptors under five representative heights the spatial continuously distributions of pollutant concentration were visually displayed base on VOXLER, and the law of the maximum hourly concentration distribu tion was analyzed with help of CANOCO. The results showed that when discharge height was 1580 m,the distribu tions of the pollution at different floors presented obvious difference, when discharge height ranged 120240 m, the difference was insignificant. For 15 m discharge height,the maximum hourly concentration of pollutant increased with the increasing of layer heights, however, the gradual decline was found when the layer heights increased from 50 m to 100 m. For 80240 m discharges height, the maximum hourly concentration of pollutant was increased with layer heights increased from 0 m to 100 m.

关 键 词：AERMOD CANOCO 排放高 度楼层高度 VOXLER 

分 类 号：X831[环境科学与工程—环境工程]