What can be the sources of air pollution? What are the sources of air pollution

Point source, surface source, line source, body source.

Air pollution sources can be divided into two categories: natural and man-made.

Air pollution sources can be divided into two categories: natural and man-made. Natural pollution sources are formed due to natural causes (such as volcanic eruptions, forest fires, etc.), and man-made pollution sources are formed due to people's production and living activities. Among the sources of man-made pollution, they can be divided into two types: fixed (such as chimneys, industrial exhaust cylinders) and mobile (such as cars, trains, airplanes, ships).

Because anthropogenic sources of pollution are common and frequent, they are more closely watched than natural sources. The main sources of air pollution are:

Industrial enterprises Industrial enterprises are the main source of air pollution and one of the key points of air health protection. With the rapid development of industry, the types and quantities of air pollutants are increasing day by day. Due to the different nature, scale, technological process, raw materials and product types of industrial enterprises, the degree of air pollution is also different.

Living stoves and heating boilers In residential areas, with the concentration of population, a large number of civil living stoves and heating boilers also need to consume a large amount of coal, especially in winter heating time, often make the polluted areas full of smoke, which is also a source of air pollution that cannot be ignored.

Transportation In recent decades, due to the development of transportation, the number of cars in the city has increased, and the frequent transportation of passengers and goods such as trains, ships, and airplanes has added new sources of air pollution to the city. Of great importance is the exhaust fumes emitted by the car. Atmospheric pollution from automobiles is characterized by the fact that the pollutants emitted are very close to people's breathing zones and can be directly inhaled by people.

The exhaust gases emitted from internal combustion engines of automobiles mainly contain carbon monoxide, nitrogen oxides, hydrocarbons (hydrocarbons), lead compounds, etc.

Classify. Air pollution sources are divided into four categories: point source, surface source, line source and body source according to the simulation form of ** mode.

Point source: A fixed point source that is concentrated through a certain device, such as a chimney, gas collector, etc.

Non-point source: the source of pollutant discharge from the ground or near the ground in a low and low concentration within a certain area, such as fugitive emission in the process process, storage pile, slag yard and other emission sources.

Line source: The source of linear emission of pollutants or the linear emission of mobile sources, such as motor vehicle emission sources on urban roads.

Bulk source: A source that emits pollutants into the atmosphere in a certain volume due to the aerodynamic action of the source itself or nearby buildings, such as coke oven bodies, roof skylights, etc.

(1) Industry: Industrial production is an important part of air pollution. There are many types of pollutants emitted into the atmosphere by industrial production, 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 the coal will release a large amount of dust, sulfur dioxide, carbon monoxide, and other harmful substances to pollute the atmosphere during the combustion process. 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 by the exhaust can directly invade people's respiratory organs, which is very serious to the air pollution in the city, and has become one of the main sources of air pollution in large cities.

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

4) Smoke from forest fires.

The main sources of air pollution include industrial emissions, exhaust emissions from transportation, building construction and urban life, as well as natural disasters and sand and dust weather.

Among them, the main pollutants in automobile exhaust are nitrogen oxides and fine particulate matter. 3. Building construction: Exhaust gases such as dust filters and concrete mixing generated during construction will also have an impact on air quality.

4. Urban life: Domestic pollution mainly comes from coal-fired heating, kitchen fumes, garbage burning, etc., which will have an impact on air quality. 5. Natural Disasters:

Natural disasters such as volcanic eruptions and sandstorms can also have an impact on air quality.

What are the control methods for air pollution sources? There are two main ways to prevent and control air pollution, one is to reduce emissions from the source of pollution, and the other is to reduce the emission concentration through purification technology. For industrial enterprises, energy conservation and emission reduction measures can be implemented to improve the level of technological dispersion; For transportation, the management and supervision of vehicles should be strengthened, and new energy vehicles should be promoted; For construction and urban life, it is necessary to reduce the generation of waste gas from the source, and strengthen the management of garbage classification and garbage disposal.

At the same time, air purifiers, greening and other means can also be used to reduce the concentration of harmful substances outdoors and indoors.

The sources of air pollution mainly include exhaust emissions from industry, transportation, construction, urban life and other fields, as well as natural disasters. In order to improve air quality, we can start by reducing pollutant emissions, adopting purification technologies, and strengthening management and supervision.

Legal basis]:

Article 9 of the Law of the People's Republic of China on the Prevention and Control of Air Pollution: The competent departments of ecology and environment or the people of provinces, autonomous regions and municipalities directly under the Central Government shall formulate air pollutant emission standards on the basis of atmospheric environmental quality standards and national economic and technical conditions.

Lawyer's analysis: The sources of air pollution mainly include the following aspects: 1. Industrial pollution

Industrial emissions are one of the main sources of air pollution, including exhaust gas, waste water and solid bridging waste. Pollutants emitted by industry include sulfur dioxide, nitrogen oxides, volatile organic compounds, etc. 2. Transportation:

Exhaust gases such as dust filters and concrete mixing generated during construction can also have an impact on air quality. 4. Urban life: Domestic pollution mainly comes from coal-fired heating, kitchen fumes, garbage incineration, etc., which will have an impact on air quality.

5. Natural disasters: Natural disasters such as volcanic eruptions and sandstorms can also have an impact on air quality.

Legal basis]:

Article 9 of the Law of the People's Republic of China on the Prevention and Control of Air Pollution: The competent department of ecology and environment or the people of provinces, autonomous regions and municipalities directly under the Central Government shall formulate air pollutant emission standards on the basis of atmospheric environmental quality standards and national economic and technical conditions.