How to deal with air pollution

Pollution source is the fundamental measure to prevent and control the harm of air pollution, and there are many control methods. Here are the main methods.

(1). The industrial layout is reasonable, so as to facilitate the diffusion of pollutants and the mutual utilization of waste gas between factories and reduce the emission of waste gas.

(2) Implement regional central heating, replace scattered low chimneys with high-efficiency boilers, and replace scattered low chimneys with high-efficiency boilers. This is a powerful measure to prevent and control urban air pollution.

(3) Change the fuel composition. For example, develop urban industrial and civil gas and liquefied petroleum gas, and adopt low-sulfur fuel and new energy sources (solar energy, wind energy, geothermal energy, etc.). ). Coal mining should be carried out to remove most sulfur (mainly pyrite sulfur) from coal.

(4) Reduce automobile exhaust emissions. Mainly to change the engine combustion design, improve the combustion quality of oil products and strengthen traffic management.

(5) The toxic gases emitted by industrial devices should be controlled from the aspects of process transformation and recycling.

(6). Chimney dust removal. The control technology of sulfur dioxide in flue gas can be divided into two categories: dry method (using solid powder or particles as absorbent) and wet method (using liquid as absorbent).

2. Change the fuel structure, develop new energy sources, gradually promote the use of natural gas, coal gas and liquefied petroleum gas, choose low-sulfur fuels, desulfurize heavy oil and coal, and develop and utilize new energy sources such as solar energy, hydrogen fuel and geothermal energy.

3. Reform production technology and control waste gas. The control of industrial air pollutants mainly focuses on dust removal and control of sulfur dioxide and nitrogen oxide emissions.

4. Setting up large-scale electric heating plants and heating stations for regional central heating, especially setting up thermal power plants and heating stations in suburbs, is a very effective measure to eliminate smoke and dust and provide heating in winter in northern cities.

5. The higher the chimney, the more conducive to the diffusion and dilution of flue gas. Generally, when the chimney height exceeds 100m, the effect is very obvious, and it is not economical to increase the cost greatly if it is too high. It should be pointed out that this is a way to reduce local ground pollution at the expense of expanding the pollution range.

6. Control the exhaust emission time

7, transportation waste gas treatment