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Biofilter filler for VOCs organic waste gas treatment, and preparation method thereof

A biological filter, organic waste gas technology, applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of high energy consumption in chemical treatment, troublesome waste residue treatment, health hazards, etc., to achieve easy decomposition and absorption, Long-term efficacy and growth-promoting effects

Inactive Publication Date: 2020-05-22
和县伊迈炭业有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

VOCs waste gas is directly discharged into the atmosphere, which will cause air pollution and cause harm to human health. The existing methods for treating VOCs waste gas include physical and chemical methods. Physical treatment mainly uses physical adsorption and condensation technology, while chemical treatment The method of oxidation and combustion is mainly used for treatment. Although physical treatment is convenient and pollution-free, the treatment of waste residue after treatment is troublesome and the treatment effect is poor, while chemical treatment consumes a lot of energy, which is not conducive to energy saving; therefore, microorganisms are used to treat VOCs waste gas It is an environmentally friendly and efficient method, but for microorganisms to treat VOCs waste gas, suitable biological fillers are needed to ensure the growth of microorganisms and provide nutrients for microorganisms

Method used

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  • Biofilter filler for VOCs organic waste gas treatment, and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0021] The preparation method of the biofilter filler used for VOCs organic waste gas treatment of the present invention, the steps are as follows:

[0022] (1) 55kg of dry biomass material pine bark is broken to length 40mm, then immersed in water, soaked for 24 hours;

[0023] (2) The soaked biomass material is placed in a paired wheel gold mill for grinding, and the grinding time is 10min. During the grinding process, it is sprayed with 11% of the weight of the biomass material containing Fe 3+ solution containing Fe 3+ The solution is mixed by iron phosphate, potassium dihydrogen phosphate and water in a mass ratio of 6:7:90;

[0024] (3) fully mixing the milled biomass materials, and then cooking them in water at 95°C for 5 hours;

[0025] (4) The biomass material after cooking is uniformly mixed with fly ash, iron powder and modified activated carbon powder, and the nutritional aid is sprayed in the process of mixing to obtain a biofilter filler, and the weight ratio o...

Embodiment 2

[0028] The preparation method of the biofilter filler used for VOCs organic waste gas treatment of the present invention, the steps are as follows:

[0029] (1) 75 kg of dried biomass material pine wood chips are broken to a length of 40 mm, then immersed in water, soaked for 24 hours;

[0030] (2) The soaked biomass material is placed in a pair of wheel gold mill for grinding, and the grinding time is 10min. During the grinding process, it is sprayed with 11% of the weight of the biomass material containing Fe 3+ solution containing Fe 3+ The solution is mixed by iron phosphate, potassium dihydrogen phosphate and water in a mass ratio of 6:7:90;

[0031] (3) fully mixing the milled biomass materials, and then cooking them in water at 95°C for 5 hours;

[0032] (4) The biomass material after cooking is uniformly mixed with fly ash, iron powder and modified activated carbon powder, and the nutritional aid is sprayed in the process of mixing to obtain a biofilter filler, and t...

Embodiment 3

[0035] The preparation method of the biofilter filler used for VOCs organic waste gas treatment of the present invention, the steps are as follows:

[0036] (1) 60kg of dry biomass material pine bark and pine chips are broken to a length of 40mm, then immersed in water, soaked for 24 hours;

[0037] (2) The soaked biomass material is placed in a paired wheel gold mill for grinding, and the grinding time is 10min. During the grinding process, it is sprayed with 11% of the weight of the biomass material containing Fe 3+ solution containing Fe 3+ The solution is mixed by iron phosphate, potassium dihydrogen phosphate and water in a mass ratio of 6:7:90;

[0038] (3) fully mixing the milled biomass materials, and then cooking them in water at 95°C for 5 hours;

[0039] (4) The biomass material after cooking is uniformly mixed with fly ash, iron powder and modified activated carbon powder, and the nutritional aid is sprayed in the process of mixing to obtain a biofilter filler, a...

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Abstract

The invention discloses a preparation method of a biofilter filler for VOCs organic waste gas treatment. The method comprises the following steps: (1) crushing a dried biomass material until the length is 40 mm, and then soaking the crushed biomass material in water for 24 hours; (2) putting the soaked biomass material into a mill, milling for 10 minutes, and spraying a Fe<3+>-containing solutionaccounting for 11% of the weight of the biomass material in the milling process; (3) fully mixing the milled biomass materials, and then steaming for 5 hours in a waterproof manner; (4) uniformly mixing the steamed biomass material, fly ash, iron powder and modified active carbon powder, and spraying a nutritional aid in the mixing process to obtain the biofilter filler. According to the present invention, the defects in the prior art are overcome, the removal rate of the biofilter filler on toluene, xylene, formaldehyde and acetone in VOCs waste gas is high, the use time is long, and the frequent replacement of the biofilter filler is avoided.

Description

technical field [0001] The invention relates to the technical field of biological filter fillers, in particular to biological filter fillers for VOCs organic waste gas treatment and a preparation method thereof. Background technique [0002] Volatile organic compounds (VOC) refer to various organic compounds with a boiling point of 50°C-260°C under normal pressure. VOCs can be divided into eight categories: alkanes, aromatics, alkenes, halocarbons, esters, aldehydes, ketones and others. Its main components are hydrocarbons, halogenated hydrocarbons, oxygen hydrocarbons and nitrogen hydrocarbons, including benzene series, organic chlorides, Freon series, organic ketones, amines, alcohols, ethers, esters, acids and petroleum hydrocarbon compounds. VOCs waste gas is directly discharged into the atmosphere, which will cause air pollution and cause harm to human health. The existing methods for treating VOCs waste gas include physical and chemical methods. Physical treatment mai...

Claims

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Application Information

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IPC IPC(8): B01D53/85B01D53/44B01D53/72
CPCB01D53/44B01D53/72B01D53/85B01D2257/708Y02A50/20
Inventor 王林
Owner 和县伊迈炭业有限责任公司