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Biofilm culturing method capable of simultaneously removing tetrahydrofuran and styrene by utilizing bio-trickling filtration process

A technology of tetrahydrofuran and film hanging method, applied in biochemical equipment and methods, chemical instruments and methods, microorganisms, etc., can solve the problems of large exhaust gas emissions, difficulty in practical application of biological methods, and high concentration, and achieve the effect of exhaust gas concentration control.

Pending Publication Date: 2020-09-29
CHONGQING TECH & BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the actual process, due to the large amount of exhaust gas emissions, complex components, and high concentrations, it is difficult to apply the biological method

Method used

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  • Biofilm culturing method capable of simultaneously removing tetrahydrofuran and styrene by utilizing bio-trickling filtration process
  • Biofilm culturing method capable of simultaneously removing tetrahydrofuran and styrene by utilizing bio-trickling filtration process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] collection of samples

[0041] The waste water in the aeration tanks of two different chemical companies was collected with sterile sampling bottles, and placed in a constant temperature incubator for overnight cultivation, and the temperature was maintained at about 35°C.

Embodiment 2

[0043] Preliminary screening of specific strains

[0044] Select 20 100mL Erlenmeyer flasks and fill them with 30mL LB medium respectively, and fill 10 100mL Erlenmeyer flasks with 30mL MM medium respectively, and put them into a high-pressure steam cooker for 30min to sterilize. Randomly extract 5 parts of each of the two water samples, divide them into the above-mentioned 10 Erlenmeyer flasks, and put them in a shaker at a temperature of 37°C and a speed of 180r / min for the first-generation culture for 12 hours; Insert 5% of the inoculum into 10 Erlenmeyer flasks used as the second-generation LB medium, and put it into a shaker under the same conditions for 3 hours; the second-generation LB medium was 15% by volume The inoculum was respectively inserted into the inorganic salt medium with tetrahydrofuran as the sole carbon source and styrene as the sole carbon source, and cultured in a shaking table at a temperature of 32°C and a rotation speed of 130 r / min for 48 hours, in ...

Embodiment 3

[0046] Enrichment culture of specific bacterial flora after screening

[0047] Choose 10 100mL Erlenmeyer flasks and fill them with 50mL LB medium respectively, and fill them with a certain number of polyurethane sponges and Raschig rings as seeds, and then sterilize them. Wait until OD600 in embodiment 2 nm When it is about 0.8, transfer the inorganic salt medium containing only tetrahydrofuran and the inorganic salt medium containing only styrene into the LB medium containing Raschig ring and polyurethane sponge as seeds with an inoculation amount of 5%. , placed in a shaker with a temperature of 37°C and a rotation speed of 180r / min for 18h. During the culture period, measure OD600 every 2 hours nm .

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Abstract

The invention discloses a biofilm culturing method capable of simultaneously removing tetrahydrofuran and styrene by utilizing a bio-trickling filtration process. The method comprises the following steps: collecting a sample, enriching and primarily screening strains, enriching specific strains, changing a connection mode after biofilm culturing is implemented respectively, and thus realizing simultaneous removal of tetrahydrofuran and styrene. By utilizing the method disclosed by the invention, rapid biofilm culturing of the strains in a packed tower can be effectively realized according to different physicochemical properties of waste gas, the effect of simultaneously and efficiently removing waste gases with different components is achieved, and the method has an important application value.

Description

technical field [0001] The invention relates to the technical field of environmental engineering microorganisms, in particular to the application of a biological trickling filter process in the removal of waste gas, which can be used in the simultaneous removal process of different components of waste gas by biological methods. Background technique [0002] With the acceleration of industrialization, the discharge of a large amount of industrial waste gas has directly or indirectly affected human health. In recent years, waste gas treatment technology has developed rapidly. Compared with other physical and chemical methods, biological methods can achieve better removal of pollutants under milder conditions and at lower costs, and greatly The risk of secondary pollution is reduced. In particular, the bio-trickling filtration process has received more and more attention due to its better ability to deal with refractory VOCs and acidic or basic compounds. [0003] In the actu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/00B01D53/84
CPCC12N1/00B01D53/84Y02A50/20
Inventor 姜岩张哲李艳萍
Owner CHONGQING TECH & BUSINESS UNIV