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Method and device for removing odorous gas

A malodorous gas and purpose technology, which is applied in the field of efficient removal of malodorous gas, can solve problems such as operation maintenance and management troubles, long time removal of stench, and practical industrial application limitations, etc., to achieve easy use and maintenance, avoid instability, eliminate The effect that the odor efficiency is high

Inactive Publication Date: 2011-01-26
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical and chemical methods mainly include adsorbent adsorption, chemical reagent absorption, catalytic combustion, etc., with high investment costs and complex equipment.
The efficiency of biological deodorization is mostly too low, the operation, maintenance and management are troublesome, and the practical application in industry is limited
h 2 o 2 , KMnO 4 can effectively remove H 2 S, methyl mercaptan and other malodorous gases, however, the use of such chemical oxides to remove odors takes a long time and produces toxic by-products

Method used

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  • Method and device for removing odorous gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) dissolving ferrate in a KOH aqueous solution with a concentration of 15M to obtain a saturated solution of ferrate;

[0024] 2) Soak granular activated carbon with a particle size of 300 meshes in the above solution, and the mass ratio of ferrate to activated carbon is 10:1;

[0025] 3) Stir slowly for 2 hours and let it stand overnight to ensure that the activated carbon fully absorbs ferrate;

[0026] 4) After filtering, the solid is air-dried naturally.

[0027] 5) The above-mentioned activated carbon loaded with ferrate and 50 mesh activated carbon are mixed uniformly at a ratio of 1:1 to prepare a composite filter material;

[0028] 6) A filter tower made of plexiglass (inner diameter 52mm, height 353mm), see figure 1 . The filter tower 3 is filled with the above-mentioned composite filter material. The filling volume is 0.32L, the filling height is 18cm, and the filling density is 342.3g / L. The hydrogen sulfide gas is passed through the gas flow meter 2 fr...

Embodiment 2

[0030] 1) dissolving ferrate in a KOH aqueous solution with a concentration of 15M to obtain a saturated solution of ferrate;

[0031] 2) Soak granular zeolite with a particle size of 500 mesh in the above solution, and the mass ratio of ferrate to zeolite is 12:1;

[0032] 3) Stir slowly for 2 hours, and let it stand overnight to ensure that the zeolite fully absorbs ferrate;

[0033] 4) After filtering, the solid is air-dried naturally.

[0034] 5) The above-mentioned zeolite loaded with ferrate and 10-mesh activated carbon are mixed uniformly at a ratio of 1:1 to prepare a composite filter material;

[0035] 6) A filter tower made of plexiglass (inner diameter 52mm, height 353mm), see figure 1 . The filter tower 3 is filled with the above-mentioned composite filter material. The filling volume is 0.32L, the filling height is 18cm, and the filling density is 342.3g / L. Pass the ammonia gas from the blower 1 through the gas flow meter 2 respectively, at a rate of 50m 3 T...

Embodiment 3

[0037] 1) dissolving ferrate in a KOH aqueous solution with a concentration of 15M to obtain a saturated solution of ferrate;

[0038] 2) Soak granular activated carbon with a particle size of 400 meshes in the above solution, and the mass ratio of ferrate to activated carbon is 11:1;

[0039] 3) Stir slowly for 2 hours and let it stand overnight to ensure that the activated carbon fully absorbs ferrate;

[0040] 4) After filtering, the solid is air-dried naturally.

[0041] 5) The above-mentioned activated carbon loaded with ferrate and ceramsite of 30 meshes are mixed uniformly at 1:1 to prepare a composite filter material;

[0042] 6) A filter tower made of plexiglass (inner diameter 52mm, height 353mm), see figure 1 . The filter tower 3 is filled with the above-mentioned composite filter material. The filling volume is 0.32L, the filling height is 18cm, and the filling density is 342.3g / L. Taking domestic garbage from a garbage compression station in Ningbo as the sou...

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Abstract

The invention discloses a method and a device for removing odorous gas. The odorous gas passes through a compound filter material and is decomposed into purified gas through porous material adsorption and ferrate oxidation for discharge, wherein the compound filter material is prepared by compounding a ferrate-loaded porous material and a blank porous material according to a ratio of 1:1. The method for preparing the ferrate-loaded porous material comprises the following steps of: 1) dissolving ferrate in aqueous solution of KOH with the concentration of 15M to prepare saturated solution of ferrate; 2) soaking a granular porous material with the granularity of 300 to 500 meshes in the solution, wherein the mass ratio of the ferrate to the porous material is 10-12:1; 3) slowly stirring for 2 hours, and standing for 10 to 24 hours to ensure that the porous material fully adsorbs the ferrate; and 4) filtering and naturally drying the solid. The compound filter material is arranged in a filtering tower to remove the odorous gas. The method and the device for removing the odorous gas have the advantages of simple device, no secondary pollution, simple and convenient maintenance and management, wide application prospect and the like.

Description

technical field [0001] The invention provides a method and device for efficiently removing malodorous gas. Background technique [0002] With the development of the economy and the improvement of people's living standards, stench has attracted more and more attention as a major environmental hazard. The sources of stench are very extensive, such as garbage transfer stations, sewage treatment plants, feces treatment plants, food processing plants, leather industry, Animal husbandry and composting plants, etc. will produce stench. If these malodorous gases are not properly handled, they will have long-term adverse effects and harm on the health of the staff and surrounding residents, and reduce the investment value and attractiveness of the surrounding land. [0003] Traditional methods for dealing with malodorous gases include physical, chemical and biological methods. Physical and chemical methods mainly include adsorbent adsorption, chemical reagent absorption, catalytic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D53/02B01D53/48
Inventor 叶芬霞李颖
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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