摘要
为明确华北某电厂烟气污染物排放扩散规律、影响因素及影响范围,采用六氟化硫(SF_(6))作为示踪检测气体开展示踪检测实验。SF_(6)气体在烟囱70 m监测平台处释放,在下风向距离释放源1、2、4、7、10 km处,分别布设3、6、15、10、8个采样点位。结果表明:在当地主导风西南风、最大落地浓度距离及北部山脉阻挡等条件下,采样区域东北方向4~7 km范围内点位的检出浓度和检出率均较高,且4 km可能是该电厂烟气污染物排放的最大落地浓度。利用SF_(6)示踪气体测定污染物扩散规律,操作简单,检测精度高,有利于提高复杂地形、地物下污染物传输监测的准确性,可为其他高架源污染物排放扩散分析、大气环境示踪检测实验提供参考。
To clarify the diffusion pattern,influencing factors and the scope of smoke pollutant emissions from a power plant in North China,sulfur hexafluoride(SF_(6))is used as a tracer detection gas for the tracer detection experiments.SF_(6)gas is released at a monitoring platform which is 70 meters away from the chimney.Downstream at distances of 1 km,2 km,4 km,7 km,and 10 km from the release source,and then three,six,fifteen,ten,and eight sampling points are set up respectively for sampling collection and detection.The results indicates that due to the dominance of local southwest winds,the maximum landing concentration distance,and the obstruction of northern mountains,the detected concentration and detection rate of sampling points at 4-7 km,northeast of the sampling area are relatively high.4km may be the maximum landing concentration of pollutants emitted from the power plant.It is easy and with high detection accuracy by using SF_(6)as tracer gas to determine the diffusion of pollutants.It is also conducive to improve the accuracy of pollutant transmission monitoring under complex terrain and ground features.It provides reference for the analysis of pollutant emission diffusion from other elevated sources and atmospheric environment tracer detection experiments.
作者
王伟
韦煜
卢毓鹏
杜斌
牛澍
牟祺
WANG Wei;WEI Yu;LU Yupeng;DU Bin;NIU Shu;MU Qi(Shanxi Lujin Wangqu Power Generation Co.,Ltd.,Changzhi 047500,China;School of Environment,Tsinghua University,Beijing 100084,China;King Creation Environmental Protection Co.,Ltd.,Beijing 100098,China)
出处
《中国环境监测》
北大核心
2025年第3期61-69,共9页
Environmental Monitoring in China
关键词
SF_(6)示踪检测
大气样品采集分析
浓度分布特征
烟气污染物
电厂
SF_(6)tracer detection
collection and analysis of atmospheric samples
concentration distribution characteristics
smoke pollutants
power plant
