呼和浩特市施工扬尘排放因子和粒径分布  

Emission Factor and Size Distribution of Fugitive Dust from Construction Sites in Hohhot

作　　者：黄玉虎[1] 蔡煜 毛华云[1] 盛亮 秦建平[1] 闫静[1] 

机构地区：[1]北京市环境保护科学研究院,北京100037 [2]呼和浩特市环境科学研究所,呼和浩特010030

出　　处：《内蒙古大学学报（自然科学版）》2011年第2期230-235,共6页Journal of Inner Mongolia University：Natural Science Edition

基　　金：国家环保公益性行业科研专项基金项目(200709030)

摘　　要：按照四维通量法模型要求的施工扬尘排放因子监测方案,2008-2009年对呼和浩特市9个建筑工地和5个背景点进行降尘监测,得出施工降尘量(ΔDF)年均值为31.7t/(km2.30d).采用微孔均匀沉积式碰撞采样器(MOUDI-110)分别采集施工现场大气和工地道路积尘(≤75μm)经实验室再悬浮后的颗粒物,结果表明,施工现场大气颗粒物粒径分布的峰值不确定,再悬浮颗粒物粒径分布呈双峰分布,峰值粒径范围在3.2-5.6μm和10-18μm,PM2.5:PM10:TSP=0.21:0.53:1,施工扬尘是PM2.5的来源之一.呼市施工扬尘PM10排放因子(以建设用地面积表示)为0.133kg/(m2.30d),是美国CARB排放因子的1.42倍,春夏秋冬4季排放因子的比值为1:0.76:0.38:0.36.2006年呼市建筑施工扬尘PM10排放量为2595 t/a.According to the monitoring project of fugitive construction dust（FCD）emission factor（EF）required by the four-dimensional fluxes mathematics model（FFM）,the dust fall concentrations from 9 construction sites and 5 background sites in Hohhot from 2008 to 2009 were monitored.The annual mean of relative dust fall（ΔDF）in construction sites was 31.7t/（km2·30d）.The atmosphere particles in construction sites and laboratory re-suspended particles of sites＇ road silt（≤75μm）were collected by MOUDI-110 cascade impactor respectively.The results show that the peak range of particle size distribution（PSD）of atmosphere particles in construction sites is uncertainty,the PSD of re-suspended particles is a bimodal distribution,the two peak size ranges are 3.2-5.6μm and 10-18μm,PM2.5：PM10：TSP=0.21：0.53：1,the FCD is one source of PM2.5.The FCD＇s PM10 EF（expressed by area of land used for building construction）of Hohhot is 0.133kg/（m2·30d）calculated according to FFM,the ratio between Hohhot＇s and U.S.CARB＇s EF is 1.42.The ratio of EF in spring,summer,autumn and winter equals to 1：0.76：0.38：0.36.The PM10 emission volume of FCD was 2595 t/a in Hohhot in 2006.

关 键 词：施工扬尘 四维通量 粒径分布 排放因子 

分 类 号：X513[环境科学与工程—环境工程]