Walking into a construction site in the west of the city, I saw dust screens covering the bare soil; at the earth excavation site, there was a "dust removal weapon" - a mobile fog cannon every one or two hundred meters; and a screen at the construction site showed real-time PM10 and PM2.5 data...
This is what a reporter saw at the construction site of the Taeyang Taiyin Expressway reconstruction project. The reporter learned from the Municipal Construction Committee that according to the "Hangzhou City Ten Articles to Control Fog", our district stipulates that for buildings and municipal infrastructure construction projects with a total construction area of 5,000 square meters and a construction period of more than 10 months, all construction site dust online monitoring systems and self-spraying equipment should be installed. So far, more than 1,000 sets of equipment have been installed at construction sites in our district.
Install "eyes in the sky" for construction sites to monitor online dust and sewage emissions at construction sites
The relevant person in charge of the Municipal Construction Committee told reporters that dust at construction sites has sporadic and sudden characteristics. To achieve the effect of controlling pollutants, the monitoring method chosen is extremely important. "The monitoring method we used before relied on human resources to carry out safety inspections one by one. Due to limited human resources, this type of inspection not only failed to provide full coverage, but also lacked timeliness. In addition, traditional human resources inspections also have shortcomings such as inspection results that mainly rely on estimates and cannot be quantified and analyzed, resulting in insufficient scientific demonstration of relative penalties. They are no longer suitable for the new situation and new regulations in Chengdu's construction site dust control work."
The person in charge told reporters that by creating an online dust monitoring system, the dust and sewage emissions at the construction site can be tracked and monitored 24/7, which is equivalent to installing a detection "eye in the sky" for the construction site; and the system can quickly process the returned data, provide real-time alarms to construction sites that exceed the predetermined sewage discharge value, and automatically send text messages to the construction site in real time, so that the person in charge can do the corresponding management work. "Through the 24-hour continuous detection of construction site dust, problems can be solved in a timely manner and relevant departments can be coordinated to deal with the problem in a timely manner; at the same time, real-time monitoring, inspection and rectification of construction site dust can be maintained, and the local environmental conditions can be more quickly understood through the project, and the sewage discharge caused by construction pollution can be understood more comprehensively. While achieving the purpose of protecting the ecological environment, it can provide data support for the development and construction of new smart cities." The person in charge said.
Once the monitor data exceeds the standard, dust removal measures must be taken
According to the "Hangzhou Construction Project Construction Site Dust Online Video Monitoring and Management Measures" issued by the Municipal Construction Committee, it is stipulated that construction site dust online video monitoring equipment should be installed at construction sites of buildings and municipal engineering infrastructure construction projects across the province, and a construction site dust video online detection Internet and video surveillance system service platform should be created. If the 10-hour average concentration of PM at a construction site exceeds the limit, dust removal measures must be taken immediately, and a response must be made on the "Construction Site Dust Video Online Monitoring Platform" within one hour. According to the "Ten Articles for Fog Control in Hanghou City", all buildings and municipal engineering infrastructure construction projects with a total construction area of 5,000 square meters and a construction period of more than 10 months must install a construction site dust video online detection system and install self-spraying equipment. So far, our district has completed the installation of more than 1,000 sets of equipment.
"Currently, hundreds of companies above designated size in Hangzhou have installed 'Construction Dust Online Monitoring Systems' at construction sites to monitor construction 24 hours a day. The data displayed on the electronic display at the construction site are immediately returned to the hands of the supervisory authority. When the control data PM2.5 exceeds 150, they will be ordered to immediately stop production for rectification; if production is not stopped, inspectors will be sent to the site. The construction company was ordered to stop production, and the construction company's disciplinary violations were investigated and punished in accordance with the law. At the same time, the Municipal Construction Committee was secretly sent to the Municipal Construction Committee, which would impose penalties and include them in the construction company's personal credit evaluation system. In other words, the supervision of construction site dust may affect the public bidding of its projects through this personal credit evaluation system, "said the person in charge of the Municipal Urban Management Committee (Construction Site Dust Office).
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