摘要
为了研究裸土道路扬尘排放特征和裸土覆盖剂抑尘效果,对裸土道路在喷洒覆盖剂前后的扬尘排放PM10质量浓度进行了现场测试,并结合现场风速风向数据计算了扬尘PM10排放强度,结果发现,喷洒覆盖剂之前,测试道路边PM10质量浓度较高,日平均质量浓度达到0.54 mg/m3,喷洒后质量浓度明显降低,在相同气象条件下,喷洒覆盖剂后PM10排放强度减小.根据现场车流量记录和风速数据发现,车辆扰动和风的作用是裸土道路扬尘的主要因素,喷洒覆盖剂后,在测试时间内,抑尘效率为78%~93%,车流量较大时达到93%,喷洒后90d抑尘效率仍大于50%.
In order to study the characteristics of fugitive dust emission from unpaved roads and control efficiency of chemical dust suppressant,this paper tested the PM10 emission before and after the application of suppressant,and the PM10 emission flux was calculated with the wind speed and wind direction data.The results suggest that the concentration of PM10 near the tested road is relatively high and the daily average value reaches 0.54 mg/m3,and the PM10 concentration and emission flux declined clearly after application of the suppressant0.Based on the traffic volume and wind speed data,it can be found that the key influence factors of dust from unpaved roads are the disturbing of traffic and wind.The control efficiency of the chemical dust suppressant applied is 78%~93% in the tested time,and the largest value is 93% when the traffic volume is high.90 days after the application of suppressant,the control efficiency is still larger than 50%.
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
2010年第11期1561-1566,共6页
Journal of Beijing University of Technology
基金
国家环保公益性行业科研专项(200709030)
关键词
裸土道路
扬尘
PM10
覆盖剂
抑尘效率
unpaved road
fugitive dust
PM10
chemical dust suppressant
control efficiency
