Volatile organic compounds (VOCs) are the most difficult to be treated in the waste gas treatment of setting machine. In the existing waste gas treatment of setting machine, VOCs are often a "missing piece" of enterprises and environmental protection departments, and there are no corresponding policies and regulations to limit the emission of organic waste gas in the printing and dyeing industry. With the development of social economy and the enhancement of people's awareness of environmental protection, people put forward higher requirements for environmental quality, so the treatment and purification of organic waste gas is imperative. There are two kinds of treatment methods for organic waste gas: one is recovery method. The recovery method is to separate volatile organic compounds (VOCs) by physical methods, such as selective adsorbent and selective osmosis membrane under certain temperature and pressure, mainly including activated carbon adsorption, pressure swing adsorption, cond ensation method and biofilm method. The other is elimination. Elimination method is to convert organic matter into water and carbon dioxide by chemical or biological reaction, including thermal oxidation, catalytic combustion, biological oxidation, corona method, plasma decomposition method, photodegradation method, etc .
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