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

A technology of ozone catalytic oxidation and organic waste gas, applied in the environmental field, can solve the problems of low pollutant degradation efficiency, low exhaust gas efficiency, secondary pollutants, etc., and achieve the effect of improving degradation efficiency, improving cost performance, and expanding types

Inactive Publication Date: 2016-07-20
BEIJING UNIV OF CHEM TECH
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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 desulfurizat

Method used

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

Examples

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Embodiment 1

[0010] Example 1: Purification of waste gas containing acrylonitrile.

[0011] A process for purifying nitrogen-containing organic waste gas by photo-generated ozone catalytic oxidation coupled with biological method is as follows: figure 1 As shown, it includes a shell 1, an exhaust gas 2, a fan 3, a filter layer 4, an ultraviolet lamp 5, a catalyst 6, a packed tower 7, a packing 8, a shower head 9, and a purified gas 10. The nitrogen-containing volatile organic waste gas 2 enters the photo-generated ozone catalytic oxidation reaction system composed of the ultraviolet lamp 5 and the catalyst 6 after being dedusted and purified by the filter layer 4 under the power transmission of the fan 3, and the nitrogen-containing volatile organic compounds in the exhaust gas. Oxidized into harmless carbon dioxide and water, as well as intermediate products, the incompletely mineralized nitrogen-containing volatile organic waste gas and the generated intermediate products enter the packe...

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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...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/86B01D53/84B01D46/10B01D53/72B01D53/44
CPCB01D46/10B01D53/007B01D53/75B01D53/84B01D53/8668B01D53/8687B01D2251/104B01D2255/2065B01D2255/2073B01D2255/20738B01D2255/20761B01D2255/2094B01D2255/2098B01D2259/804Y02A50/20
Inventor 徐仲均崔利波李静
Owner BEIJING UNIV OF CHEM TECH
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