上海市建筑工地扬尘在线监测技术研究与应用

Research and Application of On-line Dust Monitoring Technology for Construction Sites in Shanghai

采用光散射颗粒物监测仪,通过对其采样系统、自动除湿装置、自动校准装置进行研发设计和改造,建成了一套应用于建筑工地扬尘的颗粒物在线监测仪。通过光散射法与标准重量法的比对试验,分析了该仪器的技术指标。结果表明,其平行性≤±7%,平均相对误差≤±20%,最大相对误差≤±25%,相关系数≥0.8。通过点位位置、点位高度、除湿等试验及1年的试点应用,确定仪器的量程、时间分辨率、除湿方式、校准方式等关键性能指标,并研究制定和发布了《上海市建筑施工颗粒物和噪声在线监测技术规范(试行)》。最后总结了上海市建筑工地扬尘在线监测系统在预警、监管和执法中的应用成果。

By using a light scattering particulate matter monitoring instrument and conducting research,design,and renovation on its sampling system,automatic dehumidification device,and automatic calibration device,a set of online particulate matter monitoring instrument for construction site dust has been built.The technical indicators of the instrument were analyzed through comparative experiments using light scattering method and standard weight method.The relative standard deviation of parallel measurement is≤±7%,average relative error is≤±20%,maximum relative error is≤±25%,and correlation coefficient is≥0.8.Through experiments on point location,point height,dehumidification,and 1-year pilot application,key performance indicators such as instrument range,time resolution,dehumidification method,and calibration method were determined.The“Technical Specification for Online Monitoring of Construction Particle and Noise in Shanghai(Trial)”was developed and released.Finally,the application results of Shanghai construction site dust online monitoring system in early warning,supervision and law enforcement are summarized.