What is the treatment principle of waste gas treatment equipment?

Dilution diffusion method, principle: the odorous gas is discharged into the atmosphere through a chimney, or diluted with odorless air to reduce the concentration of odorous substances to reduce the odor. Scope of application: It is suitable for treating malodorous gas with medium and low concentration and organized emission. Advantages: low cost and simple equipment. Disadvantages: vulnerable to meteorological conditions, malodorous substances still exist. Water absorption method, principle: Using the characteristic that some substances in odor are easily soluble in water, the odor components are directly in contact with water, thus dissolving in water to achieve the purpose of deodorization. Scope of application: Odor gas from water-soluble organized emission sources. Advantages: simple process, convenient management, low equipment operation cost and no secondary pollution, so it is necessary to treat the washing liquid. Disadvantages: the purification efficiency is low, and it needs to be used in conjunction with other technologies, and the treatment effect on mercaptan and fatty acid is poor. Principle of aeration deodorization method: Odor substances are dispersed in the mixed solution containing activated sludge in the form of aeration, and the odor substances are degraded by suspended microorganisms, which has a wide application range. Scope of application: As of 20 13, Japan has been used for odor treatment in manure treatment plants and sewage treatment plants. Advantages: After acclimation of activated sludge, the removal rate of malodorous components not exceeding the limit load can reach above 99.5%. Disadvantages: Due to the limitation of aeration intensity, the application of this method is still limited. Catalytic oxidation process, principle: the reaction tower is filled with special solid filler, and the filler is combined with multi-media catalyst. When the malodorous gas passes through the packing layer under the action of the induced draft fan, it fully contacts with the liquid-phase composite oxidant sprayed by the special nozzle on the surface of the solid packing, and the pollution factors in the malodorous gas are fully decomposed under the catalysis of the multi-media catalyst. Scope of application: It has a wide range of application, especially suitable for treating waste gas with large atmospheric volume and medium and high concentration, and has a good removal rate of hydrophobic pollutants. Advantages: small floor space, less investment and low operating cost; Easy to manage and ready to use. Disadvantages: impact load resistance, not easily affected by pollutant concentration and temperature changes, and a certain amount of chemicals need to be consumed. Low temperature plasma is the fourth state of matter after solid, liquid and gas. When the applied voltage reaches the ignition voltage of the gas, the gas molecules are decomposed to produce a mixture including electrons, various ions, atoms and free radicals. Although the electron temperature is very high during the discharge process, the heavy particle temperature is very low and the whole system is in a low temperature state, so it is called low temperature plasma. Low-temperature plasma is the use of these high-energy electrons, free radicals and other active particles and pollutants in exhaust gas to degrade pollutants, so that pollutant molecules can be decomposed in a very short time and various subsequent reactions can occur, thus achieving the purpose of degrading pollutants. Low temperature plasma air purification equipment can significantly control the pollution including VOC, malodorous gas, malodorous gas, oil fume and dust, and can also be used for disinfection and sterilization. Low temperature plasma technology is a brand-new purification process, which does not need any additives, produces no waste water and waste residue, and does not cause secondary pollution. For more information, please consult Suzhou Hongwei Environmental Technology Co., Ltd., thank you!