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Biological membrane used for waste gas treatment, and preparation method of biological membrane

A waste gas treatment and biofilm technology, which is applied in separation methods, chemical instruments and methods, and air quality improvement, can solve the problems of long biofilm fixation time, low biofilm treatment rate of refractory pollutants, and compatibility of microorganisms and fillers Poor compatibility and other problems, to achieve the effect of shortening the fixation time, easy to implement, and good compatibility

Inactive Publication Date: 2019-09-17
广西霸普环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a biofilm for waste gas treatment and its preparation for the problems of poor compatibility between microorganisms and fillers, long biofilm fixation time, and low biofilm treatment rate for refractory pollutants in the treatment of industrial waste gas. method

Method used

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  • Biological membrane used for waste gas treatment, and preparation method of biological membrane

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Embodiment 1

[0039] A method for preparing a biofilm for waste gas treatment, comprising the following steps:

[0040] a. According to the weight ratio, take 22 parts of polylactic acid and 4 parts of formic acid solution, add them into the reaction kettle, stir evenly, then heat to 87 ° C, then add 11 parts of soybean protein isolate, and stir for 160 minutes;

[0041] Wherein, the mass fraction of formic acid solution is 28%.

[0042] b. Cool down to 52°C, add 4 parts of polyvinyl alcohol and 0.2 parts of manganese acetate, then raise the temperature to 98°C for 66 minutes, then cool down to 62°C;

[0043] c. Keep the temperature at 62°C, add 16 parts of ceramic powder, stir for 10 minutes, and then glue out to get glue;

[0044] Wherein, the ceramic powder includes the following raw materials in parts by weight: 55 parts of kaolinite, 11 parts of ethanol, 2.3 parts of sodium dodecylsulfonate, 0.2 part of ammonium nitrate, and 0.1 part of potassium dihydrogen phosphate.

[0045] The pr...

Embodiment 2

[0054] A method for preparing a biofilm for waste gas treatment, comprising the following steps:

[0055] a. According to the weight ratio, take 38 parts of polylactic acid and 9 parts of formic acid solution, add them to the reaction kettle, stir evenly, then heat to 95 ° C, then add 29 parts of soybean protein isolate, and stir for 200 minutes;

[0056] Wherein, the mass fraction of formic acid solution is 80%.

[0057] b. Cool down to 70°C, add 10 parts of polyvinyl alcohol and 0.8 parts of manganese acetate, then pass in nitrogen, then raise the temperature to 120°C for 90 minutes, then cool down to 80°C;

[0058] c. Keep the temperature at 80°C, add 24 parts of ceramic powder, stir for 28 minutes, and then glue out to obtain glue;

[0059] Wherein, the ceramic powder includes the following raw materials by weight: 75 parts of kaolinite, 19 parts of ethanol, 3.1 parts of sodium dodecylsulfonate, 1.4 parts of ammonium nitrate, and 1.1 parts of potassium dihydrogen phosphat...

Embodiment 3

[0069] A method for preparing a biofilm for waste gas treatment, comprising the following steps:

[0070] a. According to the weight ratio, take 26 parts of polylactic acid and 5.2 parts of formic acid solution, add them to the reaction kettle, stir evenly, then heat to 89 ° C, then add 15.5 parts of soybean protein isolate, and stir for 180 minutes;

[0071] Wherein, the mass fraction of formic acid solution is 41%.

[0072] b. Cool down to 56°C, add 5.5 parts of polyvinyl alcohol and 0.3 parts of manganese acetate, then blow in nitrogen, then raise the temperature to 104°C for 72 minutes, then cool down to 66°C;

[0073] c. Keep the temperature at 66°C, add 18 parts of ceramic powder, stir for 15 minutes, and then glue out to obtain glue;

[0074] Wherein, the ceramic powder includes the following raw materials in parts by weight: 60 parts of kaolinite, 13 parts of ethanol, 2.5 parts of sodium dodecylsulfonate, 0.5 part of ammonium nitrate, and 0.4 part of potassium dihydro...

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Abstract

The invention provides a biological membrane used for waste gas treatment, and a preparation method of the biological membrane, and in particular relates to the technical field of waste gas purification. According to the preparation method, biotrickling filter filler is obtained by using formic acid to perform catalytic polymerization on polylactic acid and polyvinyl alcohol, and the biological membrane used for the waste gas treatment is prepared by inoculating the filler with nutrient mud and spraying the filler with a nutrient solution. The biological membrane prepared by the method has good compatibility with the filler, and can stably adhere to the filler, so that the fixation time is shortened to 3h at most; the biological membrane has a high removal rate for refractory pollutants; after the biological membrane is used, the removal rate of organic matters in industrial waste gas is 90% or above, the removal rate of 1, 4-dioxane is 94% or above, and the removal rate of dioxin is 92% or above. The invention also provides the preparation method of the biological membrane; the method is stable and controllable, and is easy to implement, thus being suitable for large-scale production.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of waste gas purification, in particular to a biofilm for waste gas treatment and a preparation method thereof. [0003] 【Background technique】 [0004] Industrial waste gas often contains a large amount of organic pollutants, which need to be purified before being discharged into the atmosphere. Refractory organic substances such as 1,4-dioxane and dioxin are difficult to deal with. If the degradation is not complete, it will harm animals and plants. cause great harm to the environment. At present, the treatment technologies for industrial waste gas include absorption, adsorption, incineration, catalysis, condensation and biological treatment technologies. Among them, biological treatment technology includes biological filtration, biological trickling filtration and biological washing technology, etc., which have the advantages of good treatment effect, no secondary pollution, low investment and op...

Claims

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Application Information

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IPC IPC(8): B01D53/84B01D53/70B01D53/72B01D53/44C12N11/08
CPCB01D53/84B01D53/70B01D53/72B01D53/44C12N11/08B01D2251/95Y02A50/20
Inventor 徐立志荣波叶新忠
Owner 广西霸普环保科技有限公司
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