CN212403629U - Immersed membrane filtering device - Google Patents
Immersed membrane filtering device Download PDFInfo
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- CN212403629U CN212403629U CN202020864444.0U CN202020864444U CN212403629U CN 212403629 U CN212403629 U CN 212403629U CN 202020864444 U CN202020864444 U CN 202020864444U CN 212403629 U CN212403629 U CN 212403629U
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model relates to an immersed membrane filtering device, which comprises a membrane box, wherein a plurality of groups of filtering membrane elements are arranged in the cavity of the membrane box at intervals in sequence, and each group of filtering membrane elements comprises a flat membrane element and a hollow fiber membrane element; a water production pipe is arranged on the membrane box, a water outlet of the filtering membrane element is communicated with the water production pipe, and purified water filtered by the filtering membrane element enters the water production pipe through the water outlet; the bottom of the filtering membrane element is spaced from the membrane box, and an aeration device is arranged in the spaced distance; the utility model reduces the aeration quantity in the working process and reduces the energy consumption by more than 50 percent; the flat membrane elements and the hollow fiber membrane elements are arranged at intervals, the flat membrane elements are responsible for isolating the aeration cavity, the hollow fiber membrane elements are responsible for disturbance, the flat membrane elements provide a protective layer for the hollow fiber membrane elements, and meanwhile, the risk of filament breakage of the hollow fiber membrane elements is reduced.
Description
Technical Field
The utility model relates to an immersion type membrane filtering device.
Background
The membrane bioreactor organically combines a membrane separation technology and a biotechnology, and replaces the traditional activated sludge method with an ultrafiltration membrane or microfiltration membrane separation technology, so that the membrane bioreactor has high-efficiency solid-liquid separation capacity and good effluent quality, and has wide application in the field of sewage treatment. The flat membrane is used as a core component of the membrane bioreactor and has a decisive effect on the stable operation of the whole system; however, the packing density of the flat membrane in the prior product is lower in unit floor area, and is generally 200-300m2Per square meter of occupied area, the occupied area of the flat membrane filled with the flat membrane with the same area is more than 2 times of that of the hollow fiber membrane with the same area;
the flat membrane needs higher aeration quantity to maintain the operation in the operation process, and the operation energy consumption is higher;
meanwhile, the two flat membranes are only blown and swept by aeration, so that mud is easily accumulated between the flat membranes. The accumulated mud can accelerate the fouling of the membrane component, increase the frequency of chemical cleaning and shorten the service life.
The hollow fiber membrane is unprotected in the operation process, and the problems of membrane yarn breakage, uneven aeration amount, sludge accumulation between membrane yarns and the like are easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides an immersed membrane filtering device with high filtering effect and small occupied area, which solves the problems of large occupied area, high aeration amount, easy sludge accumulation between flat membrane and high operation energy consumption of the flat membrane bioreactor in the prior art; the medium control fiber membrane is easy to break, the aeration quantity is not uniform, and the sludge is easy to accumulate among the membrane filaments.
The technical scheme for realizing the purpose is as follows:
an immersed membrane filtering device comprises a membrane box, wherein a plurality of groups of filtering membrane elements are arranged in a cavity of the membrane box at intervals in sequence, and each group of filtering membrane elements comprises a flat membrane element and a hollow fiber membrane element; a water production pipe is arranged on the membrane box, a water outlet of the filtering membrane element is communicated with the water production pipe, and purified water filtered by the filtering membrane element enters the water production pipe through the water outlet;
the bottom of the filtering membrane element is spaced from the membrane box, and an aeration device is arranged in the spaced distance.
Optionally, the aeration device comprises an aeration pipe, a plurality of aeration holes arranged at intervals are arranged on the aeration pipe, and the aeration holes are arranged at positions below a horizontal plane by taking the horizontal plane passing through the circle center of the aeration pipe as a reference.
Optionally, the axis of the aeration hole forms an included angle of 30-60 degrees with the horizontal line.
Optionally, the included angle is 45 degrees.
Optionally, an air compression device is further included; an air inlet pipe is installed on the membrane box, an air inlet is formed in the air inlet pipe, the air inlet pipe is communicated with the aeration device, the air inlet is communicated with an air compression device, and the air compression device provides air for the aeration device.
Optionally, the device further comprises an external water outlet pipeline; the water producing pipe is provided with a water producing port, the water producing port is communicated with an external water outlet pipeline, the external water outlet pipeline is communicated with a self-sucking pump and a vacuumizing device, purified water in the water producing pipe is sucked out by the self-sucking pump, and the vacuumizing device enables negative pressure to be generated in the water producing pipe.
The self-priming pump provides power for the outflow of purified water.
Optionally, two ends of the flat membrane element are connected with the membrane box in an inserting manner;
alternatively, the flat sheet membrane elements and the hollow fiber membrane elements are arranged equidistantly.
The filtration method of the immersed membrane filtration device comprises the following steps:
the membrane box is placed in a membrane pool containing sewage, and the vacuumizing device is opened to generate negative pressure in the water production pipe;
then starting a self-priming pump to provide suction force, collecting filtered purified water into a water production pipe from a water outlet through a membrane hole of a flat membrane element under the action of negative pressure suction by sewage in the membrane box, and pumping the purified water out by the self-priming pump;
meanwhile, the aeration device is started, the aeration pipe aerates at the bottom of the membrane box to generate continuous bubbles, the bubbles give thrust to the hollow fiber membrane element in the rising process, so that the hollow fiber membrane element continuously shakes, the surface of the flat membrane element is brushed, and pollutants on the surface of the flat membrane element fall off.
The utility model reduces the aeration quantity in the working process and reduces the energy consumption by more than 50 percent; the flat-plate membrane elements and the hollow fiber membrane elements are arranged at intervals, the flat-plate membrane elements are responsible for isolating the aeration cavity, and the hollow fiber membrane elements are responsible for disturbance, so that a protective layer is provided for the hollow fiber membrane elements, and the risk of broken filaments is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a side view of the present invention;
FIG. 4 is a schematic cross-sectional view of an aerator pipe;
description of the figures: the device comprises a membrane box 1, a flat membrane element 2, a hollow fiber membrane element 3, a water production pipe 4, a water outlet flange 5, a hose 6, an aeration pipe 7, an aeration hole 8, an air inlet pipe 9 and an air inlet flange 10;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. At least one embodiment of the utility model provides the following technical scheme:
in the figure, an immersion type membrane filtering device comprises a membrane box 1, wherein groups of filtering membrane elements are sequentially arranged in a cavity of the membrane box 1, each group of filtering membrane elements comprises a flat membrane element 2 and a hollow fiber membrane element 3, so that the flat membrane elements 2 and the hollow fiber membrane elements 3 form a spaced arrangement mode, the flat membrane elements 2 are responsible for isolating an aeration cavity, and the hollow fiber membrane elements are responsible for disturbance; the packing membrane area can reach 300-;
after the filtering membrane elements are arranged, the flat membrane elements 2 are arranged on two sides of the hollow fiber membrane element 3, and the hollow fiber membrane element 3 is arranged on two sides of the flat membrane element 2; the flat membrane element 2 and the hollow fiber membrane element 3 are used for filtering sewage, a plurality of membrane filaments are arranged on the surface of the hollow fiber membrane element 3, and sludge generated on the surfaces of two sides of the flat membrane element 2 in the filtering process can be cleaned through membrane filament disturbance; the flat membrane elements 2 are arranged on two sides of the hollow fiber membrane element 3, so that protective measures can be provided for the hollow fiber membrane element 3, the hollow fiber membrane element 3 is protected from being damaged by external complex environments, the yarn breakage rate of membrane yarns on the hollow fiber membrane element 3 is reduced, and the quality of produced water is improved.
Preferably, the hollow fiber membrane elements 3, the flat membrane elements 2, and the hollow fiber membrane elements 3 are arranged at equal intervals; the flat membrane elements 2 and the hollow fiber membrane elements 3 are arranged at equal intervals.
As an option, the membrane box 1 is provided with a plurality of grooves or a plurality of jacks, and two ends of the flat membrane element 2 are inserted into the grooves or the jacks, so that the flat membrane element 2 is installed on the membrane box 1 in an insertion manner, and replacement and maintenance of the flat membrane element 2 are facilitated.
A water production pipe 4 is arranged on the membrane box 1, a water outlet of the flat membrane element 2 is communicated with the water production pipe 4, a water production port is arranged on the water production pipe 4, and purified water filtered by the flat membrane element 2 is discharged through the water production port;
as a further option, the water producing port is communicated with an external water outlet pipeline (not shown in the figure); in order to conveniently convey the purified water, a self-sucking pump and a vacuumizing device are installed on an external water outlet pipeline, the self-sucking pump provides suction force for the output of the purified water, the purified water is conveyed out through a water production pipe 4 under the suction effect of the self-sucking pump, the vacuumizing device enables negative pressure to be generated in the water production pipe 4, and the filtered purified water conveniently enters the water production pipe 4 under the negative pressure effect;
a water outlet flange 5 is installed on the preferable membrane box 1, the water producing port is communicated with the water outlet flange 5 through a hose 6, and the water outlet flange 5 is used as a transition part to facilitate installation of an external water outlet pipeline; the purified water flows out through a water production pipe 4, a water production port, a hose 6 and a water outlet flange 5;
the bottom of the filtering membrane element is spaced from the bottom of the membrane box 1, and an aeration device is arranged in the spaced distance; the aeration device aerates gas, the aerated gas generates continuous bubbles with certain size, the bubbles continuously rise to provide certain thrust for the hollow fiber membrane element 3, membrane filaments on the hollow fiber membrane element 3 are continuously shaken, so that sludge on the surface of the flat membrane element 2 is flushed away, and the filtering effect is improved;
the aeration device comprises an aeration pipe 7; the aeration pipe 7 is positioned at the bottom of the filtering membrane element, and the distance between the aeration pipe 7 and the filtering membrane element is at least 50 mm; a plurality of aeration holes 8 which are arranged at intervals are arranged on the aeration pipe 7, and gas is exposed from the aeration holes 8;
as a preferred option, the aeration pipe 7 may be a disk-shaped structure, or may be a plurality of spaced, parallel pipes;
as a preferable mode, the aeration holes 8 are provided at a position below a horizontal plane with reference to the horizontal plane passing through the center of the aeration tube 7.
More preferably, the axis of the aeration hole 8 forms an included angle a of 30-60 degrees with the horizontal line; further, the aeration holes 8 are arranged at an angle of inclining 45 degrees outwards, the arrangement is adopted for the purpose that gas from the aeration holes 8 forms a buffer and does not directly impact the filtering membrane element, the gas has time to form bubbles, so that sewage is stirred to form fluctuation, the fluctuating air flow enables membrane filaments on the hollow fiber membrane element 3 to shake, the bubbles do not directly impact the hollow fiber membrane element 3, the membrane filaments are prevented from being broken due to overlarge impact force, and the service life of the hollow fiber membrane element 3 is prolonged;
as an option, the membrane box further comprises an air compression device (not shown in the figure) and an air inlet pipe 9, wherein the air inlet pipe 9 is installed on the membrane box 1, an air inlet is arranged on the air inlet pipe 9, the air inlet pipe 9 is communicated with the aeration device, the air inlet is communicated with the air compression device through an external air inlet pipeline, the air compression device provides a power source for aeration for the aeration device, and the air source is continuously sent out to continuously supply air for the membrane box 1;
as a preferable mode, an air inlet flange 10 is arranged on the air inlet, so that the air inlet can be conveniently connected with an air compression device;
the air compression device can be a fan or other air storage devices; compressed air that the fan produced transmits for aeration pipe 7 through intake pipe 9, 8 aerates in aeration hole, spill over to membrane case 1 from aeration hole 8 again, the continuous membrane silk swing on blowing hollow fiber membrane element 3 of gas, the membrane silk on hollow fiber membrane element 3 carries out the sweeping action to adnexed mud on the dull and stereotyped membrane element 2 on its next door, make it slow down the adnexed of mud, greatly reduced the energy consumption of blowing, make its equipment can also reduce the energy consumption of operation when reducing area and stable product water quality of water, the operating performance of current immersed membrane filter equipment has been promoted greatly.
In the working process, the membrane box 1 is placed in a membrane pool, the liquid level of sewage in the membrane pool is always 100-500 mm higher than a flange port of a water production pipe on the membrane box 1, so that the sewage is filtered all the time;
the working process of the device is described in detail below:
under the state of normal temperature and normal pressure, firstly opening the vacuum-pumping device to generate negative pressure in the water production pipe 4, then starting the self-sucking pump or the centrifugal pump to provide suction force, collecting filtered purified water into the water production pipe 4 from a water outlet by sewage in the membrane tank through membrane holes of the flat membrane element 2 and the hollow fiber membrane element 3 under the action of negative pressure suction, and conveying the purified water outwards through the self-sucking pump; meanwhile, the fan aerates at the bottom of the membrane box 1 through the aeration pipe 7, the aerated gas can continuously generate bubbles with a certain size, the bubbles continuously rise to provide certain thrust for the hollow fiber membrane element 3, the hollow fiber membrane element is continuously shaken to provide certain sweeping effect for the flat membrane element 2, pollutants on the surface of the flat membrane element fall off, and the pollution on the surface of the flat membrane element 2 is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the embodiments of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the scope of the embodiments of the present invention.
Claims (8)
1. The utility model provides a submerged membrane filtration device, includes the membrane case, its characterized in that: a plurality of groups of filtering membrane elements are arranged in the cavity of the membrane box at intervals in sequence, and each group of filtering membrane elements comprises a flat plate membrane element and a hollow fiber membrane element; a water production pipe is arranged on the membrane box, a water outlet of the filtering membrane element is communicated with the water production pipe, and purified water filtered by the filtering membrane element enters the water production pipe through the water outlet;
the bottom of the filtering membrane element is spaced from the membrane box, and an aeration device is arranged in the spaced distance.
2. The submerged membrane filtration device of claim 1, wherein: the aeration device comprises an aeration pipe, wherein a plurality of aeration holes which are arranged at intervals are arranged on the aeration pipe, and the aeration holes are arranged at the lower part of a horizontal plane by taking the horizontal plane passing through the circle center of the aeration pipe as a reference.
3. The submerged membrane filtration device of claim 2, wherein: the axial line of the aeration holes forms an included angle of 30-60 degrees with the horizontal line.
4. The submerged membrane filtration device of claim 3, wherein: the included angle is 45 degrees.
5. The submerged membrane filtration device of claim 1, wherein: the air compressor is also included; an air inlet pipe is installed on the membrane box, an air inlet is formed in the air inlet pipe, the air inlet pipe is communicated with the aeration device, the air inlet is communicated with an air compression device, and the air compression device provides air for the aeration device.
6. The submerged membrane filtration device of claim 1, wherein: the device also comprises an external water outlet pipeline; the water producing pipe is provided with a water producing port, the water producing port is communicated with an external water outlet pipeline, the external water outlet pipeline is communicated with a self-sucking pump and a vacuumizing device, purified water in the water producing pipe is sucked out by the self-sucking pump, and the vacuumizing device enables negative pressure to be generated in the water producing pipe.
7. The submerged membrane filtration device of claim 1, wherein: and two ends of the flat membrane element are connected with the membrane box in an inserting mode.
8. The submerged membrane filtration device of claim 1, wherein: the flat membrane elements and the hollow fiber membrane elements are arranged at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020864444.0U CN212403629U (en) | 2020-05-21 | 2020-05-21 | Immersed membrane filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020864444.0U CN212403629U (en) | 2020-05-21 | 2020-05-21 | Immersed membrane filtering device |
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| Publication Number | Publication Date |
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| CN212403629U true CN212403629U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020864444.0U Active CN212403629U (en) | 2020-05-21 | 2020-05-21 | Immersed membrane filtering device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533251A (en) * | 2020-05-21 | 2020-08-14 | 阿克菲姆(嘉兴)科技有限公司 | Immersed membrane filtering device and filtering method |
| CN113694737A (en) * | 2021-08-13 | 2021-11-26 | 万华化学集团股份有限公司 | Self-cleaning water inlet separation net and application |
-
2020
- 2020-05-21 CN CN202020864444.0U patent/CN212403629U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533251A (en) * | 2020-05-21 | 2020-08-14 | 阿克菲姆(嘉兴)科技有限公司 | Immersed membrane filtering device and filtering method |
| CN113694737A (en) * | 2021-08-13 | 2021-11-26 | 万华化学集团股份有限公司 | Self-cleaning water inlet separation net and application |
| CN113694737B (en) * | 2021-08-13 | 2024-05-03 | 万华化学集团股份有限公司 | Self-cleaning water inlet partition net and application |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210226 Address after: 314000 No.1, No.26 Jiateng Road, Gang District, Jiaxing City, Zhejiang Province Patentee after: Aikefei membrane material (Jiaxing) Co.,Ltd. Address before: No.12, building 3, Hangzhou bay new economic Park, Jiaxing City, Zhejiang Province, 314201 Patentee before: Akfam (Jiaxing) Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 314000 No.1, No.26 Jiateng Road, Gang District, Jiaxing City, Zhejiang Province Patentee after: Acfim membrane (Jiaxing) Co.,Ltd. Address before: 314000 No.1, No.26 Jiateng Road, Gang District, Jiaxing City, Zhejiang Province Patentee before: Aikefei membrane material (Jiaxing) Co.,Ltd. |