Air pollution is here, where are the prevention and control standards?

There is a national standard for this.

1. Intensify environmental protection publicity, encourage public participation in government and environmental protection departments at all levels to increase environmental protection publicity through multiple channels and channels, and through publicity and education, so that people have a clear understanding of environmental pollution, especially air pollution, and strive not only to protect the environment from themselves, but also to actively supervise and report environmental violations.

Second, all levels should intensify the control of air pollution in their own regions, and formulate practical measures to reduce air pollution. For example, the supervision and management of firecrackers and firecrackers should be strengthened, and roadside barbecues should be banned.

3. Improve the energy structure and promote new energy. For a long time, China's energy structure has been dominated by coal, so it produces serious air pollution, and in order to fundamentally reduce the problem of large gas pollution, we must pay attention to the use of clean energy such as electric energy, wind energy, and geothermal. Take measures to improve the utilization rate of coal.

In recent years, with the rapid increase in the number of private cars and agricultural vehicles, exhaust emissions have become an important part of air pollution. The following countermeasures can be taken: improve everyone's awareness of environmental protection, call on everyone to pay attention to the daily maintenance of the motor car, clean the engine regularly, reduce carbon deposition and achieve emission reduction effect; Improve the exhaust gas detection system of motor vehicles and promote the maintenance of motor vehicle exhaust gases; Install a catalytic converter in the exhaust system of the motor vehicle to make the fuel fully combusted; Promote and develop new fuels, such as methanol, ethanol and other oxygenated organic compounds.

Effectively control the development of private cars, expand the scope and capacity of subways and buses, and vigorously promote walking or green bicycles.

Fifth, increase the area of greening and afforestation. Plants are natural filters of the air, and increasing the green area in various regions is an economical and effective measure to reduce air pollution.

Turning on the air conditioner will definitely pollute the air, especially if the air conditioner is not of good quality. According to the survey results of the air conditioning hygiene status released by the Chinese Center for Disease Control and Prevention, in the detection of the amount of dust and the content of dust bacteria in the air conditioning system of the air conditioning system in more than 60 cities, the air conditioning air duct with serious pollution accounted for the proportion, the air conditioning air duct with moderate pollution accounted for the proportion, and the qualified air conditioning duct accounted for only the proportion. This shocking set of figures tells us that the air conditioner overhead has become a source of pollution!

1) Industry: Industry is an important part of air pollution. There are many types of pollutants emitted into the atmosphere by industry, and their properties are complex, including soot, sulfur oxides, nitrogen oxides, organic compounds, halides, carbon compounds, etc.

Some of them are soot, and some are gases.

2) Stoves and heating boilers: A large number of civil stoves and heating boilers in the city need to consume a large amount of coal, and a large amount of dust, sulfur dioxide, carbon monoxide and other harmful substances will be released during the combustion process of coal to pollute the atmosphere. Especially in winter, when heating, it often fills the polluted area with smoke and chokes people's cough, which is also a source of pollution that cannot be ignored.

3) Transportation: Automobiles, trains, airplanes, and ships are the main means of transportation in contemporary times, and the exhaust gases produced by burning coal or oil are also important pollutants. In particular, the number of cars in the city is large and concentrated, and the pollutants emitted can directly invade people's respiratory organs, which is very serious to the air pollution of the city, and has become one of the main sources of air pollution in the big city.

The exhaust gases emitted by automobiles mainly include carbon monoxide, sulfur dioxide, nitrogen oxides and hydrocarbons, and the first three substances are very harmful.

Pollution sources: Combustion of "coal, other non-clean energy fuels" and exhaust gases and vehicle exhaust gases from "industrial pollution sources".

Pollutants: Divided into "point source" and "non-point source" Main gas pollutants: sulfur dioxide (SO2), nitrogen oxides (NOx), TSP, PM10, ozone (O3), carbon monoxide (CO), lead (PB), benzopyridine, heavy metals.

Hazards: Acid rain, poisoning, haze, photochemical smog and deterioration of air quality.

Prevention and control measures: use clean energy, speed up coal conversion technology, carry out cleaner production, desulfurization, destocking facilities, purification equipment, etc

Strictly implement industrial policies, eliminate outdated technology and equipment, achieve total pollutant control, pollutant emission trading, and strengthen supervision.

The upper large pressure is small, and the area is reduced.

Air Pollution Factor: Basic Items (GB3095-2012): SO2, NO2, PM10,

Other items: TSP, NOX, PB, BENZOAPYROPYRO,

Sources of pollution: Combustion of coal and natural gas, other fuels, and exhaust gases from factories and vehicles.

Pollutants: divided into solid and gas, the main gas pollutants: nitrogen oxides, sulfur oxides.

Hazards: Acid rain is formed, poisoning people

Imitation measures: strengthen air quality monitoring, use clean energy, eliminate, reduce pollution sources, and treat exhaust gases.

Air pollution indices include: , PM1O,

According to research, the air is freshest in the summer and autumn seasons of the year, and the winter and spring seasons are the freshest.

Air pollution is heaviest in one or two months; During the day, the air is fresher and cleaner at noon and afternoon, and the air pollution is heavier in the morning, evening and evening, with the peak pollution around 7 p.m. and 7 a.m. In addition to the flue gas, exhaust gas and carbon dioxide gas emitted by green plants at night, the most important thing in air pollution is meteorological factors. Due to the obvious change of vertical temperature difference between day and night, when the ground temperature is higher than the upper-air temperature, the air rises, and the pollutants are easily carried to the upper altitude to diffuse. When the ground temperature is lower than a certain altitude, the sky forms an "inversion layer", which presses on the ground like a large cover, so that various pollutants in the ground air are not easy to diffuse.

Generally, the inversion layer is thicker at night and in winter and spring, which affects the diffusion of dirty air on the ground. When the sun comes out, the ground heats up rapidly, and the inversion layer gradually dissipates, so the polluted air spreads. Therefore, generally after 10 a.m., the ground air is relatively fresh.