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    Several organic waste gas treatment methods and th

     Several organic waste gas treatment methods and their advantages and disadvantages are introduced. 1. Thermal combustion method can fully mix organic waste gas and fuel gas at high temperature to realize complete combustion. It is suitable for the treatment of combustible gas with high concentration and small gas volume, with high purification efficiency and complete oxidation and decomposition of organic waste gas. Disadvantages: the equipment is easy to corrode, the treatment cost is high, and it is easy to form secondary pollution; 2. Under the action of catalyst, the hydrocarbon in organic waste gas is quickly oxidized into water and carbon dioxide under the condition of low temperature, so as to achieve the purpose of treatment. Disadvantages: the catalyst is easy to be poisoned, and the investment cost is high; 3. The absorption method takes advantage of the characteristics of organic waste gas which is easily soluble in water, and the waste gas directly contacts with water, thus dissolving in water, so as to achieve the effect of removing waste gas. It is suitable for water-soluble and organized emission source of organic gas. The process is simple, the management is convenient, and the equipment operation cost is low. Disadvantages: secondary pollution, need to treat the washing liquid; low purification efficiency; 4. Adsorption method uses adsorbent to absorb organic waste gas, which is suitable for treating low concentration organic waste gas. The purification efficiency is high and the cost is low. Disadvantages: regeneration is difficult and needs to be replaced continuously; 5. Biological method uses the life process of microorganisms to decompose gaseous pollutants in waste gas into less or even harmless substances. There are a variety of microorganisms in nature, almost all inorganic and organic pollutants can be transformed. Compared with other purification methods, biological treatment has the advantages of simple equipment, low energy consumption, safety and reliability, and no secondary pollution, but it can not recycle the pollutants. 6. In the process of dielectric barrier discharge (DBD) with low temperature plasma technology, particles with high chemical activity, such as electrons, ions, free radicals and excited molecules, are produced in the plasma. The pollutants in the waste gas react with these active groups with high energy, and finally convert into CO2 and H2O, so as to achieve the purpose of purifying waste gas.

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