Method for cooperatively treating volatile organic compounds and nitrogen-containing and sulfur-containing malodorous substances

A volatile organic compound and co-processing technology, applied in the field of environmental engineering, can solve the problem that sulfur-containing, nitrogen-containing and odorous substances cannot be effectively co-processed with biological treatment

Pending Publication Date: 2020-05-08
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that volatile organic compounds and sulfur-containing and nitrogen-containing malodorous substances cannot be effectively synergistically treated biologically, and combine the oxidation of nitrogen-containing

Method used

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  • Method for cooperatively treating volatile organic compounds and nitrogen-containing and sulfur-containing malodorous substances
  • Method for cooperatively treating volatile organic compounds and nitrogen-containing and sulfur-containing malodorous substances

Examples

Experimental program
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Example Embodiment

[0109] Example 1 A method for co-processing hydrogen sulfide, ammonia and styrene

[0110] For the structure of the processing equipment used in this embodiment, see figure 1 .

[0111] The push-flow combined biological-electrochemical treatment equipment made of organic glass plastic plates for the treatment of volatile organic compounds and nitrogen-containing sulfur-containing malodorous substances has a length, width and height of 1.0m, 0.75m, and 1.50m respectively.

[0112] In the bio-electrochemical reaction vessel 3, the cathode 32 and the anode 33 are made of stainless steel mesh, and the electrode is parallel to the bottom plane of the bio-electrochemical reaction vessel 3.

[0113] The porous partition of the plug flow oxidation vessel has multiple holes with a diameter of 50mm; the outlet of the vent pipe of the fixed desulfurization zone is higher than the second water outlet and lower than the gas distribution plate; the gas distribution plate is provided with holes, Th...

Example Embodiment

[0139] Example 2. A method for co-processing hydrogen sulfide, ammonia and methane

[0140] For the structure of the processing equipment used in this embodiment, see figure 1 . The push-flow combined biological-electrochemical treatment equipment made of stainless steel plates for the treatment of volatile organic compounds and nitrogen- and sulfur-containing malodorous substances has a length, width and height of 0.8m, 0.5m, and 1.2m respectively. In the bio-electrochemical reaction vessel 3, the cathode 32 and the anode 33 are made of carbon felt, the angle between the anode 33 and the electrode and the bottom plane of the bio-electrochemical reaction vessel 3 is 60 degrees, and the angle between the anode 32 and the cathode is 30 degrees.

[0141] The porous partition of the push-flow oxidation vessel has multiple holes with a diameter of 30mm; the outlet of the vent pipe of the fixed desulfurization zone is higher than the second water outlet and lower than the gas distributi...

Example Embodiment

[0170] Example 3. A method for co-processing mercaptans, ammonia, trimethylamine and ethylbenzene

[0171] For the structure of the processing equipment used in this embodiment, see figure 1 . The push-flow combined bio-electrochemical treatment equipment made of plastic plates for the treatment of volatile organic compounds and nitrogen- and sulfur-containing malodorous substances has a length, width and height of 5.0m, 3.0m, and 2.0m respectively.

[0172] In the bio-electrochemical reaction vessel 3, the cathode 32 and the anode 33 are made of carbon rods, and the angle between the anode 33 and the cathode 32 and the bottom plane of the bio-electrochemical reaction vessel 3 is perpendicular.

[0173] The porous partition of the plug-flow oxidation vessel has a plurality of holes with a hole diameter of 80mm; the outlet of the vent pipe of the fixed desulfurization zone is higher than the second water outlet and lower than the gas distribution plate; the gas distribution plate is ...

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Abstract

The invention belongs to the technical field of environmental engineering, and relates to a method for cooperatively treating volatile organic compounds and nitrogen-containing and sulfur-containing malodorous substances. According to the method, two reaction processes including oxidation of nitrogen-containing and sulfur-containing malodorous substances and biological-electrochemical conversion of volatile organic compounds are combined; the nitrogen-containing and sulfur-containing malodorous substances are subjected to an aerobic reaction in a plug-flow oxidizer to be converted into sulfate, nitrite and nitrate; an oxidation product of the malodorous substances is input into a biological-electrochemical oxidizer through a circulating pump, so an electron acceptor is provided for an anaerobic oxidation of the volatile organic compounds; the volatile organic compounds are oxidized into carbon dioxide by sulfate, nitrite and nitrate in the biological-electrochemical oxidizer; and anaerobic conditions are adopted for oxidation of the volatile organic compounds, and additional oxygen does not need to be supplemented, so energy consumption is reduced.

Description

Technical field: [0001] The invention belongs to the technical field of environmental engineering, and relates to a device for co-processing mixed waste gas containing various substances by using a bio-electrochemical reactor, in particular to a method for co-processing volatile organic compounds and nitrogen-containing and sulfur-containing malodorous substances. Background technique: [0002] Domestic garbage and domestic sewage contain a large amount of organic matter. In the process of landfill, composting, anaerobic hydrolysis of sewage, sludge concentration and digestion, etc., the biodegradation and decomposition of organic matter occurs in an oxygen-free or anoxic environment. . Therefore, a large amount of malodorous substances containing sulfur (such as hydrogen sulfide, methyl mercaptan, and methyl sulfide) and nitrogen (such as ammonia and trimethylamine) will be produced during the treatment process. These substances can cause sensory discomfort and cause serio...

Claims

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Application Information

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IPC IPC(8): B01D53/84B01D53/48B01D53/52B01D53/54B01D53/58B01D53/72B01D53/70
CPCB01D53/84B01D53/48B01D53/52B01D53/54B01D53/58B01D53/72B01D53/70B01D2251/95B01D2259/80Y02A50/20
Inventor 李琳王莹柴风光韩云平刘俊新
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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