What should be the normal value of dust monitoring, and is there a standard?

The first-level standard is 40lug m g m3, and the second-level standard is 70ug m g m3 respectively; The annual average and 24-hour average emission concentration limits are 15uglm ugim3 and 35ugim ug m3 respectively. The annual average and 24-hour average emission concentration limits for TSP are 80 ugim m3 for the primary standard and 200 ugim for the secondary standard respectively.

Most of the current environmental monitoring instruments belong to pollution source monitoring, that is, if there is pollution, it will be monitored. The installation of dust monitoring equipment on the construction site can effectively improve the dust environment, and when the dust caused by the operation reaches a certain concentration, certain dust reduction measures are taken to reduce dust pollution.

Industrial production, motor vehicles, coal burning and fugitive dust are common to PM10**. Among them, the most important performance is industrial production, accounting for nearly one-third; PM10 is the most important dust, accounting for a quarter.

In order to actively respond to the severe situation of air pollution and various challenges of the regional atmospheric environment, it is necessary to carry out real-time monitoring of dust in the construction sites of engineering projects, so as to scientifically formulate haze control measures and improve air quality.

Fugitive Dust Monitoring System:

The dust monitoring system is based on the Internet of Things and artificial intelligence technology, and the data monitored by the sensor (noise, wind speed, wind direction, wind force, atmospheric pressure.

Air temperature and humidity, TSP, etc.).

The data is displayed in real time on the on-site LED screen, platform PC and mobile terminal, which is convenient for remote real-time supervision of on-site environmental data and timely decision-making, which can realize accurate monitoring of dust and prevent dust pollution.

Dust monitoring unit: composed of sensor, PM10 sensor. The dust is continuously and automatically monitored by sensors, and the dust collects data every minute and uploads it to the server in real time for background program statistics and analysis.

Noise monitoring unit: The all-weather outdoor noise collection and sensing unit composed of noise sensors provides a reliable guarantee for the outdoor monitoring safety and data accuracy of the sensor.

The above content reference: Encyclopedia - Dust Monitoring.

The ambient air quality standard GB3095-2012 stipulates that the primary concentration value of the annual average PM10 is 40ug m3. The new air quality standard for respirable particulate matter (PM10) has an annual average of 70ug m3 and a 24-hour average limit of 150ug in the new air quality standard for pollutants.

There is a standard for the normal value of dust monitoring.

Dust is a very complex sedimentation source, which is both the receptor of dust and the ** of dust. Therefore, there are various forms of definition of dust at home and abroad, and there is no unified definition at present. As far as the field of environmental protection is concerned, the environmental protection industry standard HJ T3932007 "Technical Specification for the Prevention and Control of Urban Dust Pollution" defines dust as:

It refers to the air particulate matter formed by the loose particulate matter on the surface entering the ambient air under the action of natural force or manpower, which is mainly divided into soil dust, construction dust, road dust and yard dust.

The State Environmental Protection Administration (SEPA) issued the "Ambient Air Quality Standard (GB3095-2012)", which stipulates the annual average and 24-hour average emission concentration limits for PM10, with the first-level standard being 40g m g m3 and the second level standard being 70g m g m3 respectively; The annual average and 24-hour average emission concentration limits are 15g m g m3 and 35g m g m3 respectively. The annual average and 24-hour average emission concentration limits for TSP are 80 g m m m3 for the primary standard and 200 g m m m3 for the secondary standard, respectively.

The normal range of values for dust monitoring is as follows:

PM10-24 hour average emission concentration limit standard:

Level 1 standard: 40 g m3.

The secondary standards are 35 g m g m3 respectively.

Hourly average emission concentration limit standard:

Level 1 standard: 15 g g m3.

Secondary standard: 35 g g m3.

TSP-24-hour average emission concentration limit standard:

Level 1 standard: 80 g m trapped in the land g m3.

Secondary standard: 200 g m g m3.

The dust detector is generally composed of a detection unit, a LED, a kanban, a dust pole part, a wind speed sensor, a wind direction sensor, a dust superposition part, and a linkage central control display part, and the dust monitoring unit aggregates the noise, temperature, humidity probe, and the dust detector selects a professional meteorological level wind speed sensor and wind direction sensor Wang Qing, high-strength polycarbon material shell, lightning and bird protection, accurate and accurate measurement, and the optional dust ** superposition equipment ** superposition function, you can superimpose information on monitoring ** , real-time reporting to the government monitoring platform. <>

Legal analysis: The annual average and 24-hour average emission concentration limits for PM10 are 40G m g m3 for the primary level and 70g m g m3 for the secondary standard, respectively; The annual average and 24-hour average emission concentration limits are 15g m g m3 for the first-level standard and 35g m g m3 for the second-level standard respectively. The annual average and 24-hour average emission concentration limits for TSP are 80 g m m m3 for the primary standard and 200 g m m m3 for the secondary standard, respectively. The standard stipulates the dust emission control requirements, monitoring requirements, and the implementation and supervision of the standard at the construction site in Hebei Province.

The standard is applicable to the control and management of dust emission from grinding and bending reeds in construction and municipal construction in Hebei Province. The emission concentration limits of open sources of dust such as highway construction and railway construction shall be implemented with reference.

Legal basis: Article 69 of the Law of the People's Republic of China on the Prevention and Control of Air Pollution The construction unit shall include the cost of preventing and controlling dust pollution in the project cost, and clarify the responsibility of the construction unit for the prevention and control of dust pollution in the construction contract. The construction unit shall formulate a specific implementation plan for the prevention and control of construction dust pollution.

Construction units engaged in housing construction, municipal infrastructure construction, river improvement, and building demolition shall file with the competent department responsible for supervising and managing the prevention and control of dust pollution.

The concentration of PM10 is specifiedThe limit value is 80 g per m3, and the basis for reaching the standard is less than or equal to 2 times per day. Dust emission control requirements, monitoring requirements, and the implementation and supervision of standards.

This standard is applicable to the environmental impact assessment of construction sites, the design of environmental protection facilities, and the management of dust emissions in the construction process of various construction projects in urban built-up areas and planning areas. Construction sites in urban and rural areas can be implemented with reference. When the AQI is greater than 300, this standard does not apply.

Fugitive dust prevention and control standards1. Set up continuous, airtight and hard enclosures according to requirements.

2. The internal roads and entrances and exits of the construction site are hardened and connected with urban roads.

3. Vehicle washing equipment is set up at the entrance and exit of the construction site.

4. Within 50 meters of the internal roads and entrances and exits of the construction site and on both sides, all-weather protection shall be implemented.

5. The muck and construction waste should be removed and transported in a timely manner, and dust reduction measures should be taken in the process of loading and unloading.

What should be the normal value of dust monitoring, and is there a standard?

The maximum allowable concentration of general dust in the air is 10 milligrams of cubic meters, and the dust containing more than 10 free silica is 2 milligrams of cubic meters. Hygiene standards are the basis for measuring the degree of pollution in the production environment, carrying out regular health supervision, and designing and evaluating the effect of protective facilities.

What should be the normal value of dust monitoring, and is there a standard?

In 2012, the State Environmental Protection Administration (SEPA) issued the "Quality Standard for Environmental Air Deficit and Fufu Gas (GB3095 2012)", which stipulates the annual average and 24-hour average emission concentration limits for PM10, with the first-level standard being 40 g g m3 and the second-level standard being 70 g m g m3 respectively. The annual average and 24-hour average emission concentration limits are 15g m g m3 and 35g m g m3 respectively. The annual average and 24-hour average pin emission concentration limits for TSP are 80 g m g m3 for the primary standard and 200 g m g m3 for the secondary standard, respectively.

Summary. The normal data range for dust monitoring depends on the detection accuracy of the monitoring equipment and the air quality standards of the area. In general, China's national environmental protection standards require that the 24-hour average concentration should not exceed 75 micrograms of cubic meters, and that the concentration of particulate matter in a single hour should not exceed 150 micrograms of cubic meters.

The U.S. Environmental Protection Agency's national air quality standards are more stringent, requiring a 24-hour average concentration of no more than 35 micrograms of cubic meters and an annual average of no more than 12 micrograms of cubic meters. Therefore, the normal values for dust monitoring must be lower than the specified standards, which will vary from place to place.

The normal data range of the dust monitoring group depends on the detection accuracy of the monitoring equipment and the air quality standards of the area. In general, China's national environmental protection standards require that the 24-hour average concentration should not exceed 75 micrograms of cubic meters, and that the concentration of particulate matter in a single hour should not exceed 150 micrograms of cubic meters. The national air quality standards of the United States or the National Environmental Protection Agency are more stringent, requiring an average concentration of no more than 35 micrograms for 24 hours and no more than 12 micrograms for an annual concentration.

Therefore, the normal values for dust monitoring must be lower than the specified standards, which will vary from place to place.

Can you elaborate on that a little bit more?

The normal data range of the dust monitoring group depends on the detection accuracy of the monitoring equipment and the air quality standards of the area. In general, China's national environmental protection standards require that the 24-hour average concentration should not exceed 75 micrograms of cubic meters, and that the concentration of particulate matter in a single hour should not exceed 150 micrograms of cubic meters. The national air quality standards of the United States or the National Environmental Protection Agency are more stringent, requiring an average concentration of no more than 35 micrograms for 24 hours and no more than 12 micrograms for an annual concentration.

Therefore, the normal values for dust monitoring must be lower than the specified standards, which will vary from place to place.