固定污染源监测断面的选择对流量测定的影响

Effect to Flow Determination of Monitoring Cross Section of Stationary Pollution Sources

监测断面的选择在废气污染源监测中起着相当重要的作用 ,在无法找到完全符合技术规范要求的监测断面时 ,以前常将监测断面选择在砖砌烟囱上的方法。通过实验 ,否定了该方法应用于测定废气流量较小的污染源的可行性 ,提出了应用于测定废气流量较小的污染源时 ,较为成熟的监测断面选择方案。

Selection of monitoring cross section was important for the monitoring of stationary source of air pollution. Formerly, it's common to locate the monitoring cross section above the stack when the cross section conformed to the demand of technique standard can not be determined. Now, the study denied the possibility to apply this method to determine the air pollution source with less flow of waste gas. For the determination of air pollution source with less flow of waste gas, to conform the demand of Monitoring Quality Assurance Technique of Air and Waste Gas, it suggested that it must locate cross section on place no more than one and half diameter of flue gas duct and increase the amount of sampling sites when necessary.