基于反演模型的焦炉无组织苯并[a]芘排放因子研究

由于焦炉无组织苯并a]芘排放因子难以测量,导致了焦炉苯并a]芘大气污染研究存在一定的不确定性.针对上述问题,本研究根据1999年~2003年上海某焦化厂的产量、空气质量监测等数据,建立了基于AERMOD(AMS/EPA REGULATORY MODEL)模型反演苯并a]芘排放因子的方法.结果显示,企业周边3个监测点年平均浓度结果分别为0.033,0.0024,0.0031μg/m³,均超过了2012年颁布的环境空气质量标准,通过AERMOD模型反演得到该焦化厂苯并a]芘平均排放因子为14.71mg/t焦煤, 苯并a]芘预测浓度超标面积125km²,超标区域主要集中在焦化厂周围,超标焦炉苯并a]芘防护距离为6300m.

Determination of benzo(a)pyrene emission factor using inverse model

Since it is difficult to measure BAP unorganized emissions directly from coke ovens, a large uncertainty exists in related studies. So with the observation data and production capacity of a coke plant in Shanghai from 1999 to 2003, we used an inverse model based on AERMOD (AMS/EPA REGULATORY MODEL) to estimate the BAP emission factor. The results show that annual concentration of three monitoring stations near this plant are 0.033,0.0024,0.0031μg/m³, all exceeded the standard. The unorganized emission factor from this study was 14.71mg/tcoke, The area where BAP concentration exceeded the standard was 125km² surrounding the coke plant and the atmospheric environment protection zone should be set to 6300m.