CN215506341U - Bubble-film-free aeration bioreactor for VOCs treatment - Google Patents

Bubble-film-free aeration bioreactor for VOCs treatment Download PDF

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CN215506341U
CN215506341U CN202121438020.9U CN202121438020U CN215506341U CN 215506341 U CN215506341 U CN 215506341U CN 202121438020 U CN202121438020 U CN 202121438020U CN 215506341 U CN215506341 U CN 215506341U
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vocs
membrane
mabr
bubble
treatment
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刘寿山
张珍君
陶伟强
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SHANGHAI MEGA VISION MEMBRANE
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SHANGHAI MEGA VISION MEMBRANE
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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Abstract

The utility model discloses a bubble-free membrane aeration bioreactor for treating VOCs (volatile organic compounds), which comprises a container, a filter screen, an MABR membrane component, an MABR membrane, biological liquid, a biological liquid circulating pump, a backflow guide pipe, a jet mixer, a VOCs inlet and a VOCs outlet, wherein a filter is connected with the VOCs inlet, the filter screen is arranged between the VOCs inlet and the container, the VOCs outlet is arranged at one end of the container, the MABR membrane component is rectangular, the MABR membrane is fully distributed in the rectangle, the biological liquid is contained in the container and is connected with the biological liquid circulating pump, the biological liquid circulating pump is communicated with the jet mixer, and the jet mixer is connected with the backflow guide pipe. The device exclusive use can be used to the exhaust-gas treatment of low concentration, handles through the device and can directly reach emission standard, can not cause secondary pollution, and the reactor is small-size, easy operation, use are more convenient.

Description

Bubble-film-free aeration bioreactor for VOCs treatment
Technical Field
The utility model relates to the field of organic waste gas treatment, in particular to a bubble-free Membrane Aeration (MABR) bioreactor for treating VOCs (volatile organic chemicals).
Background
The most common gas pollutants in the industries of petroleum, chemical industry and the like are Volatile Organic Compounds (VOCs), if the pollutants are not properly treated, the pollutants can pollute the environment, the climate change is influenced, and even the health of animals, plants and human beings is threatened, so that the reduction of the discharge of the VOCs is an important measure for purifying air.
The treatment methods of the VOCs are mainly divided into an adsorption method, a combustion method, a condensation method and the like, compared with the traditional methods, the biological treatment method has the advantages of safety, reliability, no secondary pollution to the environment and the like, and is a hotspot of research, however, most of reactors adopted in the biological treatment need to be added with a certain amount of fillers, the problem of blockage can be easily caused, meanwhile, the occupied area of equipment of some traditional biological methods is large, the reaction time is long, and meanwhile, hydrophobic pollutants are difficult to degrade. In addition, for VOCs gas with low concentration and large air volume, the traditional process has the problems of high operation cost, low treatment efficiency and secondary pollution.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a bubble-free membrane aeration bioreactor for treating VOCs (volatile organic compounds), which comprises a container, a filter screen, an MABR membrane assembly, an MABR membrane, biological liquid, a biological liquid circulating pump, a backflow guide pipe, a jet mixer, a VOCs inlet and a VOCs outlet, wherein the filter is connected with the VOCs inlet, the filter screen is arranged between the VOCs inlet and the container, the VOCs outlet is arranged at one end of the container, the MABR membrane assembly is rectangular, the MABR membrane is fully distributed in the rectangle, the biological liquid is contained in the container, the biological liquid is connected with the biological liquid circulating pump, the biological liquid circulating pump is communicated with the jet mixer, and the jet mixer is connected with the backflow guide pipe.
As a preferred technical solution, the container comprises a horizontal type or a vertical type.
As a preferred technical solution, the MABR membrane module is a hollow fiber membrane module, and includes one of a tube type, a column type, a plate type, a ceramic tube type, a roll type, and a curtain type.
As a preferable technical solution, the MABR membrane is made of one of PVDF, PP, PES, PS, and ceramic membrane.
As a preferred technical solution, the MABR membrane module internally includes multiple groups of MABR membranes.
As a preferred technical scheme, the backflow guide pipe extends to the bottom of the biological fluid.
As a preferable technical scheme, a biological membrane is attached to the surface of the MABR membrane, and the thickness of the biological membrane is 5-500 μm.
As a preferable technical scheme, the MABR membrane component is immersed in biological fluid.
As a preferable technical scheme, the jet flow mixer directly enters the biological liquid through a return conduit after air is sucked.
As a preferred solution, the jet mixer is controlled by a solenoid valve.
Has the advantages that:
(1) the device provided by the utility model is independently used and suitable for low-concentration waste gas treatment, and the treatment by the device can directly reach the emission standard;
(2) the device is completely different from other bioreactors or membrane contactors for VOCs;
(3) the device adopts bubble-free aeration, the aerobic zone and the anaerobic zone are formed simultaneously, so that the oxygen utilization rate is high, and the conversion rate of converting VOCs into carbon dioxide, water or inorganic salt can be improved by directly contacting the VOCs through the MABR membrane;
(4) even the VOC which is not dissolved in water passes through a biological membrane under the action of pressure and is biodegraded;
(5) VOCs are not in direct contact with biological liquid, treated gas does not have microorganism adhesion, the emission standard is easy to reach, and secondary pollution is avoided;
(6) the environment of the biological fluid is reasonably controlled by the biological fluid circulating pump, so that the normal growth of microorganisms is ensured;
(7) the reactor is small, the use is convenient, and the operation is simple.
Drawings
FIG. 1 is a schematic diagram of the bubble membrane-free aerated bioreactor for VOCs treatment in example 1;
FIG. 2 is a schematic diagram of the bubble membrane-free aerated bioreactor for VOCs treatment in example 2;
in the figure: a container 1; a filter screen 2; an MABR membrane module 3; a MABR membrane 4; 5, biological fluid; a biological fluid circulating pump 6; a return conduit 7; a jet mixer 8; an inlet 9 for VOCs; VOCs outlet 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, a bubble-free membrane aeration bioreactor for treating VOCs includes a container 1, a filter screen 2, an MABR membrane module 3, an MABR membrane 4, a biological fluid 5, a biological fluid circulation pump 6, a reflux conduit 7, a jet mixer 8, a VOCs inlet 9, and a VOCs outlet 10, wherein the filter 2 is connected to the VOCs inlet 9, the filter screen 2 is disposed between the VOCs inlet 9 and the container 1, the VOCs outlet 10 is disposed at one end of the container 1, the MABR membrane module 3 is rectangular, the MABR membrane 4 is fully distributed in the rectangular shape, the biological fluid 5 is contained in the container 1, the biological fluid 5 is connected to the biological fluid circulation pump 6, the biological fluid circulation pump 6 is communicated with the jet mixer 8, and the jet mixer 8 is connected to the reflux conduit 7.
The container 1 is horizontal.
The MABR membrane module 3 is a curtain type hollow fiber membrane module.
The material of the MABR membrane 4 is PVDF.
The inside of the MABR membrane component 3 comprises a plurality of groups of MABR membranes 4.
The return conduit 7 extends to the bottom of the biological fluid 5.
The surface of the MABR membrane 4 is attached with a biological membrane, and the thickness of the biological membrane is 100 mu m.
The jet mixer 8 sucks air and then directly enters the biological liquid 5 through the return conduit 7.
The jet mixer 8 is controlled by a solenoid valve.
And a baffle is arranged at one end of the container 1 close to the VOCs outlet 10, and the height of the baffle is higher than that of the biological liquid 5.
The biological liquid 5 contains functional bacteria with biochemical degradation function.
The biological liquid 5 comprises a strain and an inorganic salt compound.
The strain is a mixture of fungi, bacteria and protozoa, and the inorganic salt compound is KH2PO4、NH4A mixture of Cl to provide nutrients required for the growth and metabolism of the microorganism.
Example 2
Referring to fig. 2, a bubble-free membrane aeration bioreactor for treating VOCs includes a container 1, a filter screen 2, an MABR membrane module 3, an MABR membrane 4, a biological fluid 5, a biological fluid circulation pump 6, a return conduit 7, a jet mixer 8, a VOCs inlet 9, and a VOCs outlet 10, wherein the filter screen 2 is disposed between the VOCs inlet 9 and the container 1, the VOCs outlet 10 is disposed at the upper end of the container 1, the MABR membrane module 3 is rectangular, the MABR membrane 4 is fully distributed in the rectangle, the biological fluid 5 is contained in the container 1, the biological fluid 5 is connected with the biological fluid circulation pump 6, the biological fluid circulation pump 6 is communicated with the jet mixer 8, and the jet mixer 8 is connected with the return conduit 7.
The container 1 is vertical.
The MABR membrane component 3 is a curtain type hollow fiber membrane component
The material of the MABR film 4 is PP.
The inside of the MABR membrane component 3 comprises a plurality of groups of MABR membranes 4.
The return conduit 7 extends to the bottom of the biological fluid 5.
The surface of the MABR membrane 4 is attached with a biological membrane, and the thickness of the biological membrane is 200 μm.
The jet mixer 8 sucks air and then directly enters the biological liquid 5 through the return conduit 7.
The jet mixer 8 is controlled by a solenoid valve.
The biological liquid 5 contains functional bacteria with biochemical degradation function.
The biological liquid 5 comprises a strain and an inorganic salt compound.
The strain is a mixture of fungi, bacteria and protozoa, and the inorganic salt compound is KH2PO4、NH4A mixture of Cl to provide nutrients required for the growth and metabolism of the microorganism.
The working principle is as follows: VOCs waste gas gets into the container behind VOCs import process filter, through contacting with the MABR membrane in the MABR subassembly, not only play filterable effect through the MABR membrane, more regard as the carrier of micropore aeration and biomembrane growth, have great specific surface area, there is adnexed biomembrane on the MABR membrane simultaneously, VOCs contacts the back with the biomembrane, degrade VOCs through the microorganism on the biomembrane, convert it into carbon dioxide and water, the MABR membrane is close to the good oxygen district of the surface formation of membrane simultaneously, keep away from the surface formation anaerobic zone of membrane, the middle anoxic zone that forms, realize nitrifying simultaneously and denitrifying, make low concentration VOCs reach emission standard after handling through the device easily, discharge through the VOC export at last.

Claims (10)

1. A bubble-free membrane aeration bioreactor for VOCs treatment is characterized by comprising a container (1), a filter screen (2), an MABR membrane component (3), an MABR membrane (4), biological liquid (5), a biological liquid circulating pump (6), a backflow pipe (7), a jet mixer (8), a VOCs inlet (9) and a VOCs outlet (10), wherein the filter screen (2) is connected with the VOCs inlet (9), the filter screen (2) is arranged between the VOCs inlet (9) and the container (1), the VOCs outlet (10) is arranged at one end of the container (1), the MABR membrane component (3) is rectangular, the MABR membrane (4) is fully distributed in the rectangle, biological liquid (5) is contained in the container (1), the biological liquid (5) is connected with the biological liquid circulating pump (6), and the biological liquid circulating pump (6) is communicated with the jet mixer (8), the jet flow mixer (8) is connected with the reflux conduit (7).
2. A bubble membrane-free aerated bioreactor for the treatment of VOCs according to claim 1, wherein the vessel (1) comprises a horizontal or vertical type.
3. The bubble membrane-free aerated bioreactor for treatment of VOCs according to claim 1, wherein the MABR membrane module (3) is a hollow fiber membrane module comprising one of a tube, a column, a plate, a ceramic tube, a roll, a curtain.
4. A bubble membrane-free aerated bioreactor for the treatment of VOCs according to claim 1, wherein the MABR membrane (4) comprises one of PVDF, PP, PES, PS, and ceramic membrane.
5. A bubble membrane-free aerated bioreactor for the treatment of VOCs according to any one of claims 1 to 4, wherein the inside of the MABR membrane module (3) comprises a plurality of sets of MABR membranes (4).
6. A bubble membrane-free aerated bioreactor for the treatment of VOCs according to claim 5, wherein the return conduit (7) extends deep to the bottom of the biological fluid (5).
7. A bubble membrane-free aerated bioreactor for the treatment of VOCs according to claim 6, wherein the MABR membrane (4) has a biofilm attached to its surface, said biofilm having a thickness of 5-500 μm.
8. A bubble membrane-free aerated bioreactor for the treatment of VOCs according to claim 1, wherein said MABR membrane module (3) is submerged in a biological fluid (5).
9. A bubble film free aerated bioreactor for the treatment of VOCs as claimed in claim 1, wherein said jet mixer (8) draws in air directly into the biological fluid (5) through a return conduit (7).
10. A bubble membrane-free aerated bioreactor for the treatment of VOCs as claimed in claim 9, wherein said jet mixer (8) is controlled by a solenoid valve.
CN202121438020.9U 2021-06-26 2021-06-26 Bubble-film-free aeration bioreactor for VOCs treatment Active CN215506341U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121438020.9U CN215506341U (en) 2021-06-26 2021-06-26 Bubble-film-free aeration bioreactor for VOCs treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121438020.9U CN215506341U (en) 2021-06-26 2021-06-26 Bubble-film-free aeration bioreactor for VOCs treatment

Publications (1)

Publication Number Publication Date
CN215506341U true CN215506341U (en) 2022-01-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

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CN (1) CN215506341U (en)

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