Workshop harmful gas treatment project method: http://www.dgyphb.com 1, exhaust gas treatment methods masking method sweetening principle: a more intense aroma and odor blending to mask odors, enabling it to be people receiving. Scope: to be applied to land immediately, temporarily eliminate the effects of low concentrations of malodorous gases occasions, odor intensity 2.5, fugitive emission sources. Advantages: You can quickly eliminate odor impact, flexibility, and low cost. Disadvantages: malodorous component, and is not removed. 2, the two exhaust gas treatment dilution diffusion method sweetening principle: the smell to the gas discharged to the atmosphere through the chimney, or diluted with odorless air to reduce the concentration of malodorous substances to reduce odor. Scope: Suitable for processing, the low concentration of malodorous gases emitted organized. Advantages: low cost, simple equipment. Disadvantages: susceptible to weather conditions, malodorous substances still exist. 3, the exhaust gas treatment method and the three thermal combustion method of deodorizing catalytic combustion principle: malodorous substances at high temperatures sufficiently mixed with the fuel gas, to achieve complete combustion Scope: For treatment of high concentration, a small volume of combustible gases. Advantages: high purification efficiency, malodorous substances are completely oxidized and decomposed. Disadvantages: Equipment corrosive, fuel consumption, processing costs are high, easy to form secondary pollution. 4, the four exhaust gas treatment method deodorized water absorption principle: the use of certain substances in the odor characteristics soluble in water, making direct contact with water odor components, which dissolves in water to achieve sweetening purposes. Scope: water-soluble, organized malodorous gases emission sources. Advantages: simple process, easy management, equipment operation and low cost secondary pollution, the need for washing liquid for processing. Disadvantages: purification efficiency is low, to be used in combination with other techniques, the mercaptans, fatty acids and other treatment effect is poor. 5, the five liquid waste treatment method absorption method deodorized principle: the use of certain substances and odorous liquid chemical reaction, removing the some of the odor components. Scope: Suitable for handling air volume, high school concentrations of odor. Advantages: Ability to handle certain odorous components in a targeted, technology is more mature. Disadvantages: purification efficiency is not high, the consumption of absorbent, easy to form the secondary pollution. 6, gas processing methods six adsorption deodorizing principle: the use of adsorbents feature allows the transfer of odorous substances from the gas phase to the solid phase. Scope: For treatment of low concentration and high purification requirements malodorous gases. Advantages: purification efficiency is very high, can handle multi-component malodorous gases. Disadvantages: expensive adsorbents, regeneration more difficult, malodorous gases to be treated requires a lower temperature and dustiness. 7, gas processing methods seven biofilter type deodorization method sweetening principle: malodorous gases pass to dust humidification or cooling and other pretreatment process, the filter bed from the bottom of the filter from the bottom up through the filter bed composed, malodorous gases transferred from the gas phase to the water - microbial mixed phase, by fixation on the metabolism of the microorganisms on the filter was broken down. Scope: the most studied, most mature technology, in practice most commonly used method for biological deodorization. Deodorization method can be subdivided into the soil, compost deodorization method, peat deodorizing method. Advantages: handling costs low. Disadvantages: large area, fillers need to be replaced periodically, sweetening process difficult to control, running for some time prone to problems of hydrophobicity and biodegradable material is handled there is a big difficulty. 8, gas processing methods eight principles of biological trickling filter type deodorization: Principles with biofilter style similar, but using media such as a polypropylene pellets, ceramics, charcoal, plastic, etc. can not provide nutrients inert material. Scope: Only for some malodorous substances degrading microorganisms attached to the filler, and will not appear in the mixed biofilter advantages: while consuming microorganisms and organic matter in the filter case. Disadvantages: pool number of microorganisms, and that can withstand up to a large pollution load biofilter, the inert filter material can not be replaced, resulting in pressure loss is small, and easy to control the operating conditions need to be constantly adding nutrients, and the operation is complex, making their application restricted. 9, waste gas treatment methods nine activated sludge washing deodorizing deodorizing method Principle: The malodorous substances and suspended solids slurry containing a mixture of liquid contact, so that in the absorber from the stench go away, and then sent to the washing liquid reactor , by the metabolic activity of microorganisms grown in suspension malodorous substances dissolved degradation. Scope: There is a large scope that can handle the amount of atmospheric odors, while operating conditions easy to control, small footprint. Disadvantages: the device costly and complicated to operate and require adding nutrients. 10, gas processing methods ten aeration activated sludge deodorizing deodorizing method Principle: malodorous substances dispersed in the form of aeration activated sludge mixed liquor containing, by suspending the growth of microbial degradation of malodorous substances wide range of applications. Scope: Currently, Japan has been used for manure treatment plants, sewage treatment plant odor processing. Advantages: activated sludge after domestication, do not exceed the limit load of malodorous components, the removal rate of up to 99.5%. Disadvantages: limited by aeration intensity, the application of the law there are certain limitations. 11, gas processing methods eleven phase catalytic oxidation process sweetening multi-media works: reaction column packed special solid composite filler, filler inside complex multi-media catalysts. When the malodorous gases under the action of the fan through the filler layer, and diverge through a special nozzle sprayed liquid oxidant complex solid filler surface in full contact, and in the multi-media catalyst catalyst, malodorous gases The contamination factor is fully decomposed. Scope: wide range of applications, especially for handling air volume, high concentrations of gas, on a good hydrophobic contaminants removal. Pros: small footprint, low investment, low operating cost; easy management, which means that use. Disadvantages: resistance to shock loading, easy to pollutant concentrations and temperature change, the need to consume a certain amount of drug. 12, the exhaust gas temperature plasma treatment of the twelve technical sweetening principle: the process of dielectric barrier discharge plasma generated internally rich in high chemical activity of the particles, such as electrons, ions, radicals and excited molecules. Pollutants in the exhaust gas having a higher energy with these reactive groups react eventually converted to CO2 and H2O and other substances, so as to achieve the purpose of purifying the exhaust gas. Scope: For a wide range of clean and efficient, especially for other methods are difficult to deal with multi-component malodorous gases, such as chemical, pharmaceutical and other industries. Advantages: electron energy is high, with almost all of the malodorous gas partial air box pulse bag filter common faults and solutions. Dongguan Yi Peng ventilation plant engineering company to undertake professional dust Website: www.dgyphb.com