The principles of exhaust gas treatment equipment include activated carbon adsorption method, catalytic combustion method, catalytic oxidation method, acid-base neutralization method, plasma method and other principles. The waste gas treatment tower adopts a five-layer waste gas adsorption, filtration and purification system. The industrial waste gas treatment design is careful, and the waste gas is purified and filtered layer by layer, with good results.
, Masking method
The principle is to use a stronger aromatic smell to blend with the odor to mask the odor so that it can be absorbed by people. Scope of application: It is suitable for situations where the influence of low-concentration odorous gases needs to be eliminated immediately and temporarily. The odor intensity is right and there are no organized emission sources. Advantages: It can eliminate the influence of odor as soon as possible, has great flexibility and low cost.
, Dilution diffusion method
Principle: Discharge the odorous gas into the atmosphere through the chimney, or dilute it with odorless air to reduce the concentration of odorous substances to reduce the odor. Scope of application: Suitable for treating medium and low concentrations of odorous gases emitted by organized organizations. Advantages: Low cost and simple equipment.
, Thermal combustion method and catalytic combustion method
The principle is that odorous substances and fuel gas are fully mixed at high temperature to achieve complete combustion. The scope of application is suitable for treating high concentration and small volume of flammable gases. Advantages: High purification efficiency, odorous substances are completely oxidized and decomposed.
, Water absorption method
The principle uses the characteristics of certain substances in the odor to be easily soluble in water, so that the odor components directly contact the water, thereby dissolving in the water to achieve the purpose of deodorization. Scope of application: Water-soluble, odorous gases from organized emission sources. Advantages: The process is simple, the management is convenient, and the equipment operation cost is low. Secondary pollution occurs and the washing liquid needs to be treated.
, Medicinal liquid absorption method
The principle uses the characteristics of chemical reactions between certain substances in the odor and the medicinal liquid to remove certain odor components. The scope of application is suitable for treating atmospheric volume and high to medium concentration odors. The advantage is that it can deal with certain odor components in a targeted manner, and the process is relatively mature.
, Adsorption method
The principle uses the adsorption function of the adsorbent to transfer the odorous substances from the gas phase to the solid phase. The scope of application is suitable for treating malodorous gases with low concentration and high purification requirements. Advantages: The purification efficiency is very high and it can handle multi-component malodorous gases.
, Washing activated sludge deodorization method
Principle: The odorous substances and the mixed liquid containing suspended solids slurry are fully contacted to remove them from the odor in the absorber, and the washing liquid is then sent to the reactor , the dissolved malodorous substances are degraded through the metabolic activities of microorganisms growing in suspension. The scope of application has a large scope of application and can handle atmospheric odors. At the same time, the operating conditions are easy to control and it occupies a small area.
, Aeration activated sludge deodorization method
Principle: The odorous substances are dispersed into the mixed liquid containing activated sludge in the form of aeration, and the odorous substances are degraded by the microorganisms growing in suspension. It has a wide range of applications. Scope of application Currently, Japan has been used for odor treatment in fecal treatment sites and sewage treatment plants.
Advantages: After activated sludge is acclimated, the removal rate of odor components that do not exceed the limit load can reach above.
Three-phase multi-media catalytic oxidation process
Principle The reaction tower is filled with special solid packing, and the multi-media catalyst is compounded inside the packing. When the odorous gas passes through the packing layer under the action of the induced draft fan, it fully contacts the liquid phase compound oxidant sprayed in the form of divergent mist through the special nozzle on the surface of the solid phase packing, and under the catalytic action of the multi-media catalyst, the odorous gas The pollution factors in are fully decomposed. Scope of application: It has a wide range of applications, especially suitable for treating atmospheric volume, medium and high concentration exhaust gas, and has a good removal rate for hydrophobic pollutants. Advantages: Small footprint, low investment, low operating costs, easy management, and ready to use.
, Low Temperature Plasma Technology
Principle During the dielectric barrier discharge process, particles rich in extremely high chemical activity are generated inside the plasma, such as electrons, ions, free radicals and excited molecules. The pollutants in the exhaust gas react with these active groups with higher energy, and are eventually converted into substances such as alcohol and other substances, thereby achieving the purpose of purifying the exhaust gas. Scope of application: It has a wide range of applications and high purification efficiency. It is especially suitable for multi-component malodorous gases that are difficult to treat with other methods, such as chemical, pharmaceutical and other industries. Advantages: The electronic energy is high and can be used with almost all malodorous gases. Common faults and solutions of the pulse bag dust collector.
The exhaust gas treatment company explains in detail ten exhaust gas treatment methods