Dust monitoring system allows more clear skies in winter

Dust monitoring system allows more clear skies in winter

Yesterday’s frost fell, only half a month left before Lidong, and only more than 70 days left before 2021.

From now until the end of the year, we will use nearly 70 days to carry out tackling operations to ensure that the three-year action plan for air pollution prevention and control is successfully concluded.

This year is the last year of 'Defense of the Blue Sky.' After three quarters of rectification this year, the national air quality has improved significantly. The number of fine days in some cities has exceeded 200 days, which is a big improvement compared to previous years. Part of the reason for these results is the installation of dust monitoring systems in major construction sites, such as urban construction, road excavation, and demolition of old houses. Through the popularization of dust monitoring systems in major pollution sources, the dust pollution has been effectively improved. Data monitoring.

Winter is a season of heavy pollution, except for pollution sources such as construction. This year's heating season is also about to begin. During the heating season, the amount of air pollutants emitted is relatively large, and there are more quiet and stable weather. It is easy to form high-polluting weather and affect the normal life of the people. It is necessary to ensure the progress of construction, and to ensure that we can survive the winter warmly, and to ensure that the air quality does not rebound in the last quarter of 'Defense of the Blue Sky.' It is not easy to do this, let alone do three at the same time. At this time, it is necessary to popularize the knowledge of the dust monitoring system again.

In order to make it easier for everyone to understand, first of all, I have three questions: What does the dust monitoring system monitor? What are the hazards of air pollution such as dust and haze? Is there any good control method?

1. Detection parameters of the fugitive dust monitoring system

The fugitive dust monitoring system mainly detects three parameters, namely total suspended particulate matter (TSP), inhalable particulate matter (PM10) and fine particulate matter (PM2.5); among them, PM2 .5 Generally speaking, the proportion is relatively low. The traditional detection method is on-site random inspection. This method will involve high labor costs and cannot fully reflect the dust problem on the construction site. Therefore, we need the help of the dust monitoring system.

The hazards of environmental pollution such as dust and haze

The main reason for the hazards of dust pollution is that it can be used as a carrier of some harmful substances, such as heavy metals, polycyclic aromatic hydrocarbons, and even bacteria and viruses. These harmful substances will have a longer survival time after they have carriers, and some smaller particles can also be suspended in the air for a longer time and be inhaled by people. Long-term, high-concentration inhalation will cause varying degrees of damage to human health.

3. Fugitive dust monitoring and its control method

Fugitive dust monitoring system can help us determine the location of the pollution source, but the specific control still needs our own operation. There are a complete set of measures for most construction dust control, which can greatly reduce the spread of dust pollution. For example: road pavement and watering, establishment of dust-proof nets, covering of dust-proof cloth, use of chemical dust suppressants, construction of fences, etc. These measures and the estimated efficiencies of controlling TSP, PM10, and PM2.5 can all be found in the 'Technical Guidelines for the Compilation of Inventory of Fugitive Dust Source Particulate Matter (Trial)'.

In addition to the on-site environmental elements, the dust monitoring system can also realize the function of unsupervised and automatic work. It can grasp the environmental conditions of the construction in progress in real time without manual duty, saving manpower and material resources, strengthening and upgrading The intensity and level of supervision can be improved, and at the same time, the ability to control on-site environmental pollution can be improved, and the degree of pollution of the construction site to the surrounding environment and the city can be greatly reduced.

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