Device and method for combined use of ozone and ultraviolet rays for processing malodorous gas

Abstract

The invention belongs to the technical field of waste gas processing, and particularly provides a device and a method for the combined use of ozone and ultraviolet rays for processing malodorous gas. The device of the invention consists of a filter screen, an ozone generator, an intensive mixer, an ultraviolet-catalytic oxidation reactor, an ozone tail gas removing device and a fan; wherein, the ultraviolet-catalytic oxidation reactor is formed by combining a plurality of ultraviolet tubes. The method of the invention comprises the following steps: filtering dust and other particles in the malodorous gas by using the filter screen; then, mixing the malodorous gas with the ozone generated by the ozone generator in the intensive mixer and conducting preliminary reaction; allowing the mixed gas to enter the ultraviolet-catalytic oxidation reactor after mixing; generating active oxygen by activating the ozone gas under the ultraviolet action, and conducting a series of reactions with the malodorous gas; and finally, processing the ozone tail gas by the ozone tail gas removing device. The fan is arranged at the back of the device, thereby ensuring that the reactor is under a negative pressure and preventing the malodorous gas from leaking. The invention for processing the malodorous gas has the advantages of large treatment capacity and high efficiency of the malodorous gas.

Description

Technical field: [0001] The invention relates to a gas treatment device and method, in particular to a device and method for jointly treating malodorous gas by utilizing ozone and ultraviolet rays, and belongs to the technical field of waste gas treatment. Background technique: [0002] Odor pollution is one of the seven typical public hazards, endangering people's health and the peace and comfort of life. So far, there are more than 4,000 kinds of odorous substances that are perceived by human sense of smell. Malodorous gases can be divided into five categories according to their composition. One is sulfur-containing compounds, such as hydrogen sulfide, mercaptans, sulfides, etc.; the other is nitrogen-containing compounds, such as ammonia, amines, amides, indoles, etc.; the third is halogens and derivatives, such as chlorine, halogenated Hydrocarbons, etc.; the fourth is hydrocarbons, such as alkanes, alkenes, alkynes, aromatics, etc.; the fifth is oxygen-containing orga...

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Problems solved by technology

However, the biological deodorization method also has the disadvantages of unstable treatment effect, large floor area, and difficult start-up. If it is applied to factories near residential areas, sewage treatment plants with high environmental protection standards, sewage pumping stations, public toilets and feces transfer stations, etc. In odor treatment engineering, the treatment effect is often not ideal

[0005] Odor gas has a wide range of influence and is difficult to deal with. Although there are various deodorization technologies, most of them are not yet mature and perfect. Either there are problems of small adaptability, low treatment effect, and large floor area, or there is a large investment. , high operating costs, complicated management and operation, and easy to produce secondary pollution

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