With the rapid development of the electronics industry, electronics factories will produce a large amount of waste gas in the production process, which will cause serious harm to the environment and human health if these waste gases are directly discharged into the atmosphere without treatment. Therefore, the waste gas treatment of electronics factories has become an important environmental issue. In order to solve this problem, various waste gas treatment environmental protection equipment came into being. This article will introduce in detail the types, principles, advantages and disadvantages and applications of environmental protection equipment for waste gas treatment in electronics factories, in order to provide reference for relevant people.
First, the first and hazard of the exhaust gas of the electronics factory.
In the production process of electronic factories, a large number of chemicals and organic solvents, such as acids, alkalis, esters, ethers, etc., will decompose under high temperature or ultraviolet radiation to produce harmful gases, such as sulfides, nitrogen oxides, hydrocarbons, etc. These exhaust gases not only have a pungent odor, but also have great harm to the human body and the environment, such as causing respiratory diseases and affecting the growth of crops.
Second, the type of environmental protection equipment for waste gas treatment in electronics factories.
1.Absorption environmental protection equipment.
The absorption method is a method that uses chemical solvents to absorb harmful components in exhaust gases. The advantages of this equipment are simple operation, low cost, and suitable for treating low concentration of exhaust gases. The disadvantage is that the treatment efficiency is low, which is easy to cause secondary pollution. Commonly used absorbents are sodium hydroxide, sodium carbonate, etc.
2.Adsorption environmental protection equipment.
The adsorption method is a method that uses adsorbents to adsorb harmful components in exhaust gas. The advantage of this equipment is that it has high treatment efficiency and is suitable for treating exhaust gases with low concentration and large gas volume. Commonly used adsorbents are activated carbon, molecular sieves, etc. The disadvantage is that the adsorbent needs to be replaced regularly, and the adsorbent is easily saturated and needs to be replaced or regenerated frequently.
3.Catalytic combustion environmental protection equipment.
Catalytic combustion is a method that uses a catalyst to oxidize and decompose harmful components in exhaust gases. The advantage of this equipment is that it has high treatment efficiency and is suitable for treating exhaust gases with high concentration and large gas volume. Commonly used catalysts are platinum, palladium and other catalysts and metal oxide catalysts. The disadvantages are that high temperature and pressure conditions are required, and the catalyst is easily deactivated.
4.Biological environmental protection equipment.
Biological method is a method of using microorganisms to decompose harmful components in exhaust gas into harmless substances. The advantages of this equipment are high treatment efficiency, low cost, and suitable for treating low concentration and large gas volume of exhaust gas. Commonly used bioreactors include biofilters, biotrickling filter towers, etc. The disadvantages are that conditions such as temperature, humidity and pH need to be controlled, and microorganisms need to be replaced or regenerated regularly.
3. Selection and application of environmental protection equipment for waste gas treatment in electronics factories.
The selection of appropriate waste gas treatment environmental protection equipment needs to be comprehensively considered according to the actual situation, including the composition, concentration, flow rate and emission requirements of the exhaust gas. In the application process, it is also necessary to pay attention to the installation, commissioning, operation and maintenance of the equipment to ensure the normal operation of the equipment and the stability and reliability of the processing effect.
In short, the waste gas treatment of electronic factories is one of the important links of environmental protection, and it is of great significance to choose the appropriate waste gas treatment environmental protection equipment to protect the environment and human health. In the future, with the continuous progress of technology and the continuous improvement of application demand, waste gas treatment environmental protection equipment will be more widely used and developed.