Comparison of photocatalytic oxidation and biological deodorization methods for treating exhaust gas:
Biological deodorization method, also known as biodegradation method, uses circulating water flow to contain pollutants in odorous gases in water, and then cultivates microorganisms in a water culture bed to degrade the pollutants into low harmful substances. The deodorization efficiency can reach 70%. However, due to the influence of microbial activity, the cultivated microorganisms can only treat one or several gases with similar properties. In order to improve treatment efficiency and stable operation, it is necessary to frequently add chemicals, control pH value, temperature, etc., which results in relatively high operating costs and requires a lot of manual labor. Moreover, once the organisms die, it will take a long time to retrain.
The photocatalytic oxidation method uses high-energy UV ultraviolet radiation to decompose and oxidize odorous substance molecular chains in the photocatalytic purification equipment, changing the material structure and breaking down and oxidizing high molecular pollutants into low molecular weight harmless substances. Its deodorization efficiency can reach 99%, greatly exceeding the national odor emission standard (GB14554-93) issued in 1993. It can treat high concentration mixed gases such as ammonia, hydrogen sulfide, methyl mercaptan, methyl sulfide, benzene, styrene, carbon disulfide, trimethylamine, dimethyl disulfide, etc. The internal light source can be used for three years, and the equipment life is over ten years. The purification technology is reliable and very stable. The purification equipment does not require daily maintenance and can be used normally with only power on. The operating cost is low and there is no secondary pollution. Scope of application: Deodorization and purification of organic and inorganic odorous gases in food processing plants, meat processing plants, slaughterhouses, poultry feed farms, paper mills, sewage treatment plants, garbage transfer stations, manure treatment plants, etc. Deodorization and purification of organic and inorganic odorous gases in refineries, rubber factories, leather factories, printing factories, chemical factories, Chinese and Western pharmaceutical factories, metal casting factories, plastic recycling plants, spray solvents, and other facilities.
The photocatalytic treatment of exhaust gas technology is a widely used technology introduced by Anjule after years of research and practical experience in the field of industrial exhaust gas purification in China. And continuously improved to form a series of industrial photocatalytic organic waste gas purification devices.
The photocatalytic deodorization device Anjule uses biological spraying for pretreatment, and then enters the photocatalytic purification device. Under the action of the catalyst, it is an environmentally friendly equipment that converts organic waste gas into CO2 and H2O at room temperature. At present, this device has been widely used by domestic and foreign users, and has achieved good purification effects.