Comparison of common odor treatment processes
The commonly used methods include physical adsorption method, biological method, chemical washing method, ionic method, catalytic combustion method, deodorizing solution deodorizing method and so on.
Physical adsorption: the use of activated carbon, zeolite and other porous media adsorption odor substances, the use of activated carbon for a wide range of applications. This method has the advantages of simple process, less one-time investment, but short service life (regeneration or even replacement once saturated), unstable treatment efficiency and low treatment efficiency for high concentration odor.
Chemical washing: chemical reaction between chemical liquid and odor molecules to form odorless substances for deodorizing purposes. The method is effective quickly, but the operation cost is high, and there is secondary pollution.
Deodorizing solution deodorizing method: use natural plant deodorant solution to adsorb odor molecules in the air, and react with odor molecules, such as polymerization, decomposition and so on, so as to make them lose odor. This method has the advantages of simple installation, short construction period, low investment, low efficiency, and the natural plant deodorant is a consumed product and the subsequent operation cost is high.
The method comprises the following steps of: generating high-density high-energy active ions by using a high-frequency high-voltage electrostatic special pulse discharge, contacting the high-energy active ions with the odor, opening the chemical bonds of the odor molecules, and decomposing into carbon dioxide and water, so that the gas can achieve the purpose of purification. This method is relatively small in volume and light in self-weight. It is suitable for compact arrangement and narrow site, but the cost of equipment one-time input is larger and the cost of operation and maintenance is higher.
Catalytic combustion: a method for removing organic pollutants from waste gases by thermal oxidation. Organic waste gases are catalytically burned at a temperature of 200? 500 ℃ and a retention time of 0.3? 5? s and are decomposed into co2 and H2? It is suitable for organic waste gas with high concentration.
Biological method: using microorganisms attached to the packing in the reactor to degrade pollutants in the waste gas into simple inorganic and microbial cytoplasm during metabolism. This technology has the advantages of high deodorization efficiency, thorough treatment, simple operation, no secondary pollution and low operation cost. It is called a green deodorant technology.www.jnblower.com