Process for purifying nitrogen-containing organic waste gas by adopting photon-generated ozone catalytic oxidation coupled biological method

Abstract

The invention relates to a process for purifying nitrogen-containing organic waste gas by adopting a photon-generated ozone catalytic oxidation coupled biological method.The process adopts a photon-generated ozone catalytic oxidation unit and a biological treatment unit which are connected in series, wherein the photon-generated ozone catalytic oxidation unit is composed of a fan, a housing, a filter layer, ultraviolet lamps and a catalyst.The serially connected biological treatment unit is composed of packed towers, a packing and spraying heads.The process utilizes the front-arranged photon-generated ozone catalytic oxidation unit to make oxygen produce free radicals having strong oxidizing properties and ozone in the waste gas under the high-energy ultraviolet light effect and produce free radicals having strong oxidizing properties under the effect of the catalyst and convert pollutants into carbon dioxide, water and intermediate products under the effects of an interaction mechanism of light oxidation, free radical oxidation, ozone oxidation and ozone catalytic oxidation, then makes products enter the serially connected biological treatment unit for subsequent degradation and finally makes the products become non-toxic harmless substances.

Description

technical field [0001] The invention relates to the field of environmental technology, in particular to a process for purifying organic waste gas by a photo-generated ozone catalytic oxidation coupled with a biological method, which is applied to the purification treatment of nitrogen-containing volatile organic waste gas, and can be used for industrial waste gas purification. Background technique [0002] Volatile organic compounds (VOCs), as the more active components in the atmosphere, not only directly endanger human health, but also form secondary pollutants such as photochemical smog and organic aerosols in the atmosphere, becoming PM. 2.5 important precursors. With the continuous development of industry, environmental pollution is becoming more and more serious, and the treatment of industrial waste gas is imminent. Therefore, researching and developing VOCs purification technology and reducing VOCs emissions will help to improve ambient air quality and protect human...

AI Technical Summary

Problems solved by technology

[0003] At present, there is a patent (CN201510279052.1) for the waste gas treatment method and device of vacuum ultraviolet photocatalysis and ozone catalytic oxidation. This patent solves the low efficiency of traditional photodegradation and photocatalysis treatment of waste gas, but it is easy to produce secondary pollutants and residual ozone potential risk issues

Biological treatment of waste gas has a patent for biological purification method of reclaimed rubber desulfurization industrial waste gas (CN200410079571.5), but this published patent still cannot get rid of the problem of low degradation efficiency of single biological method for biodegradable pollutants

So far, there is no patent on the process of photogenerated ozone catalytic oxidation coupled with biological method to purify organic waste gas. The patent of this invention can achieve the above impossible, and effectively expand the type, concentration and scope of VOCs waste gas treatment

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