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Treatment system and method of bubbling type ultraviolet/Fenton oxidized organic waste gas

A technology of organic waste gas and treatment system, which is applied in the direction of gas treatment, chemical instruments and methods, separation methods, etc., can solve the problems of low rate of hydrophobic organic waste gas, incomplete degradation of organic matter, and low cycle efficiency, so as to promote the circulation of iron ions , Promote gas-liquid mass transfer rate, increase the effect of gas-liquid contact area

Active Publication Date: 2016-06-22
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In order to overcome the low cycle efficiency of the existing Fenton reagent reaction, Fe 2+ The amount of use is large, and a large amount of iron sludge, H 2 o 2 Due to the shortcomings of low utilization rate of organic waste, incomplete degradation of organic matter, and low rate of hydrophobic organic waste gas in gas-liquid mass transfer, the present invention provides a bubbling UV / Fenton that can improve the purification effect of organic waste gas and reduce operating costs. Treatment system and treatment method for oxidizing organic waste gas

Method used

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  • Treatment system and method of bubbling type ultraviolet/Fenton oxidized organic waste gas
  • Treatment system and method of bubbling type ultraviolet/Fenton oxidized organic waste gas
  • Treatment system and method of bubbling type ultraviolet/Fenton oxidized organic waste gas

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Effect test

Embodiment 1

[0034] refer to figure 1, a treatment system for bubbling ultraviolet / Fenton oxidation of organic waste gas, including an oxidation reaction chamber 1, a blower 2, and a hydrogen peroxide dosing device 8, and a Fenton reagent solution 10 is placed in the oxidation reaction chamber 1, and the oxidation reaction chamber 1 The top of the reaction chamber 1 is provided with an exhaust port 4, the upper part is provided with a hydrogen peroxide inlet 7, and the lower part is provided with an air inlet 3, and the blower 2 is connected with the air inlet 3 through a waste gas pipeline, and the hydrogen peroxide injection The adding device 8 is connected with the hydrogen peroxide inlet 7; the upper end of the inner chamber of the oxidation reaction chamber 1 is vertically arranged with several ultraviolet lamps 5 for installing ultraviolet lamps, and the lower end of the ultraviolet lamps 5 is inserted into the Fenton reagent In the solution 10, the ultraviolet lamp is connected to a...

Embodiment 2

[0048] Adopt the same treatment system as in Example 1, wherein the organic waste gas subject to test purification is waste gas containing xylene, and the concentration of xylene is 350mg / m 3 Left and right, in Fenton's reagent solution: Fe 2+ Concentrations were 8mg / L, 20mg / L, 40mg / L, H 2 o 2 When the mass concentration is 0.1%, the pH is 3.0, the residence time of organic waste gas is 55s, and the wavelength of ultraviolet light is 254nm, the removal rate of xylene can reach about 90%, and the removal rate of xylene is basically stable at about 120min. The test results are shown in Table 2.

[0049] Table 2 Test results

[0050]

Embodiment 3

[0052] Adopt the same treatment system as in Example 1, wherein the organic waste gas subject to test purification is waste gas containing xylene, and the concentration of xylene is 350mg / m 3 Left and right, in Fenton's reagent solution: Fe 2+ Concentration is 20mg / L, H 2 o 2 The mass concentration is 0.01%, and hydrogen peroxide is added once every 45 minutes to maintain H 2 o 2 When the mass concentration is 0.01%, the pH is 3.0, the residence time of organic waste gas is 55s, and the wavelength of ultraviolet light is 254nm, the removal rate of xylene can be maintained at about 90%. 2 o 2 The utilization rate is the highest, and the test results are shown in Table 3.

[0053] Table 3 test results

[0054]

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Abstract

The invention discloses a treatment system and method of bubbling type ultraviolet / Fenton oxidized organic waste gas. The treatment system comprises an oxidization reaction chamber, an air blower and a hydrogen peroxide feeding device, wherein a Fenton reagent solution is stored in the oxidization reaction chamber; an exhaust hole is formed in the top of the oxidization reaction chamber, a hydrogen peroxide inlet is formed in the upper part of the oxidization reaction chamber and a gas inlet is formed in the lower part of the oxidization reaction chamber; the air blower is connected with the gas inlet through a waste gas pipeline; the hydrogen peroxide feeding device is connected with the hydrogen peroxide inlet; a plurality of ultraviolet lamp tubes are vertically arranged at the upper end of an inner cavity of the oxidization reaction chamber; the lower ends of the ultraviolet lamp tubes are inserted into the Fenton reagent solution; a disc type aerator is arranged at the bottom end of the oxidization reaction chamber; the gas inlet is connected with the disc type aerator through a gas inlet pipe. The treatment system and method of the bubbling type ultraviolet / Fenton oxidized organic waste gas have the advantages of simplicity in operation, low energy consumption and high efficiency; Fe<2+> in a Fenton reagent can be circularly utilized and the utilization rate of H2O2 is also improved.

Description

technical field [0001] The invention relates to a treatment system and method for bubbling ultraviolet / Fenton oxidation organic waste gas, which can remove various pollutants such as sulfur dioxide, nitrogen monoxide and volatile organic compounds, and is suitable for treating industrial waste gas, garbage and sewage odor. Background technique [0002] Compared with conventional organic waste gas treatment technologies (such as absorption, combustion, biological methods, etc.), the UV / Fenton method has the characteristics of rapid and thorough oxidation, mild reaction conditions, high efficiency, and no pollution, etc., and has incomparable characteristics with general methods It has gradually become a promising new advanced oxidation technology in the field of environmental protection, especially for the treatment of toxic, complex and high-concentration organic waste gas. At present, there are few studies on the application of this technology to treat organic waste gas, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/79B01D53/74B01D53/72
CPCB01D53/72B01D53/74B01D53/79B01D2251/10B01D2251/106B01D2259/804
Inventor 吴成强陈效许李
Owner ZHEJIANG UNIV OF TECH
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