Analysis of the treatment principle of exhaust gas treatment equipment:
Exhaust gas treatment equipment mainly adopts different process technologies, and then it is an environmental protection equipment to purify the air by recycling or reducing the exhausted harmful substances, so that the environment is not polluted. So, what is the treatment principle of the exhaust gas treatment equipment? Let ’s take a look at it with Xiaobian!
Dilution diffusion method:
Principle: The odorous gas is discharged through the chimney to the atmosphere, or diluted with odorless air, thereby reducing the concentration of odorous substances and reducing the odor. Among them, it is mainly suitable for the treatment of malodorous gases with low concentration of organic emissions. Advantages: low cost and simple equipment. Disadvantages: susceptible to meteorological conditions, malodorous substances still exist.
Water absorption method:
Principle: It mainly uses some of the odorous substances that are relatively soluble in water, so that the odorous components are in direct contact with water, and finally dissolved in water to achieve the purpose of deodorization. Mainly applicable to malodorous gas from water-soluble and organized emission sources. Advantages: simple process and convenient management, and low operating cost of the equipment. When secondary pollution occurs, only the washing liquid needs to be processed. Disadvantages: The purification efficiency is very low, and it also needs to be combined with other technologies, especially the treatment effect of thiols and fatty acids is poor.
Aeration type deodorization method:
Principle: Mainly, the malodorous substance is dispersed in the mixed liquid containing activated sludge by aeration, and then the microorganisms growing in suspension are degraded to the malodorous substance. The main applicable scope is relatively wide. For example, in recent years, it has begun to be applied to the odor treatment of manure treatment plants and sewage treatment plants. Its advantages: After a certain domestication of the activated sludge, it can reach the removal rate of more than 99.5% for the malodorous molecules without exceeding the limit load. Its disadvantage is that it is limited by the above limitation of aeration intensity.
Catalytic oxidation process:
Principle: A special solid packing is installed in the reaction tower, especially a variety of media catalysts are packed in the packing. Therefore, when the malodorous gas enters the packing layer under the action of the induced draft fan, it will contact the solid oxidizing agent on the surface of the solid-phase packing when it comes into contact with the mist-like liquid emitted by the special nozzle. Then, these polluting molecules in the stench gas will be fully decomposed. It is mainly used in the treatment of exhaust gas with large atmospheric volume and medium to high concentration, especially it has a very good removal rate for hydrophobic pollutants. Its advantages: small footprint, low investment, and low operating costs; and it is very convenient in management. The disadvantage is that it is resistant to impact loads, it is not easy to affect the concentration of pollutants and temperature changes, and a certain amount of medicine needs to be consumed.
Low temperature plasma:
Low temperature plasma is the fourth state substance after solid, liquid, and gaseous state, especially when the applied voltage reaches the ignition voltage of gas, gas molecules will be broken, and then electrons, various ions, A mixture of atoms and free radicals. Therefore, even if the temperature of the electron is high during the discharge process, the temperature of its heavy particles will be very low, so that the entire system will have a low temperature state, so it is called low temperature plasma. When low-temperature plasmas degrade pollutants, they mainly use active particles such as high-energy electrons and free radicals, as well as pollutants in the exhaust gas, so that the molecules of pollutants decompose in a short time, and subsequent Various reactions can also achieve the purpose of degrading pollutants.
The above is the relevant information released by Guangzhou Puyi Environmental Technology Co., Ltd., and would like to know more about the exhaust gas treatment equipment.