北京建筑垃圾堆放场春季降尘量与源距离关系探讨  

DISCUSSION ON RELATIONSHIP BETWEEN DUST FALL AND DISTANCE FROM SOURCE IN A BEIJING CONSTRUCTION WASTE DUMP IN SPRING

作　　者：任雅琪 赵文吉[1] 李晓秀[1] 金囝囡 王丽丽 武高峰 武志宏 REN Ya-qi;ZHAO Wen-ji;LI Xiao-xiu;JIN Jian-nan;WANG Li-li;WU Gao-feng;WU Zhi-hong(College of Resource Environment and Tourism,Capital Normal University,Beijing 100048,China)

机构地区：[1]首都师范大学资源环境与旅游学院,北京100048

出　　处：《环境工程》2020年第3期33-38,共6页Environmental Engineering

基　　金：国家重点研发计划资助项目(2018YFC0706004)。

摘　　要：以北京某建筑垃圾堆放场为研究对象,通过在建筑垃圾堆放场2.5 km范围内放射式布点,于2019年4月对降尘进行监测,探究了建筑垃圾堆放对环境空气中降尘的影响。结果表明:监测范围内降尘量普遍高于北京市同期降尘月平均水平。建筑垃圾堆≤150 m范围内降尘量最高,平均值为75.09 t/(km^2·30 d);随着与建筑垃圾堆距离的增大,150~500 m范围内降尘量数值仍偏高,但有明显的下降趋势,平均值为32.53 t/(km^2·30 d);在距离>500 m后,降尘量数值变化趋于平缓。建筑垃圾对降尘的主要影响范围在半径500 m内,受主导风向控制,建筑垃圾堆东北部受影响明显较大。In this paper,a construction waste dump in Beijing was taken as the research object.Through the radioactive sampling points distribution within 2.5 km of the construction waste dump,the dust fall was collected in April 2019,and the impact of construction and demolition waste stacking on the dust fall in the ambient air was explored.The results showed that the amount of dust fall in the monitoring range was generally higher than the monthly average level of dust fall in the same period in Beijing.Within 150 m of the construction waste dump,the dust fall was the highest,with an average value of 75.09 t/(km^2·30 d).As the distance from the construction waste dump became longer,the amount of dust falling in the range of 150~500m was still on the high side,but there was an obvious downward trend,with an average value of 32.53 t/(km^2·30 d).When the distance exceeded 500 m,the numerical variation of dust fall tended to be gentle.The main influence scope of construction and demolition waste on dust fall was basically within 500 m radius,which was controlled by the dominant wind direction,and the northeast part of construction waste dump was significantly affected.

关 键 词：建筑垃圾 大气降尘 降尘量 春季 北京 

分 类 号：X513[环境科学与工程—环境工程] X799.1