CN215209035U - Anti-fouling durable hollow fiber membrane separation device - Google Patents
Anti-fouling durable hollow fiber membrane separation device Download PDFInfo
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- CN215209035U CN215209035U CN202121564257.1U CN202121564257U CN215209035U CN 215209035 U CN215209035 U CN 215209035U CN 202121564257 U CN202121564257 U CN 202121564257U CN 215209035 U CN215209035 U CN 215209035U
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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 a stain-resistant durable hollow fiber membrane separation device, which comprises an adjusting tank, a sedimentation tank and a hollow fiber membrane separation tank in sequence, wherein the adjusting tank is provided with a water inlet, the bottom of the hollow fiber membrane separation tank is provided with an emptying port, the adjusting tank is communicated with the sedimentation tank through a first connecting pipe, the sedimentation tank is communicated with the hollow fiber membrane separation tank through a second connecting pipe, and a membrane component and an aeration device are arranged in the hollow fiber membrane separation tank; the membrane module comprises a frame body and a plurality of hollow fiber membranes arranged on the frame body; the frame body comprises an upper frame body, a lower frame body and a fixed frame, the fixed frame is fixed between the upper frame body and the lower frame body, a transmission shaft is arranged on the upper frame body, and the transmission shaft extends out of the hollow fiber membrane separation tank and is connected with a rotating motor; the upper end of the hollow fiber membrane is sealed and fixed on the upper frame body, the lower end of the hollow fiber membrane is fixed on the lower frame body and is connected with a water collecting pipe, the water collecting pipe is collected and connected with a water outlet pipe, the bottom of the hollow fiber membrane separation tank is provided with a water outlet, the water collecting pipe is connected with the water outlet through a sealing bearing, and the outside of the water outlet is connected with a peristaltic pump through a water pipe; the aeration device comprises an air pump and an aeration disc, and the aeration disc is arranged at the bottom of the hollow fiber membrane separation tank and is positioned below the frame body.
Description
Technical Field
The utility model relates to a durable hollow fiber membrane separator of anti-soil belongs to the water treatment field.
Background
MBR (Membrane bioreactor) is a new water treatment technology combining a Membrane separation unit and a biological treatment unit. The membrane separation unit is used for intercepting solid matters, macromolecular substances and the like through a membrane component to obtain high-quality effluent water quality.
In the operation process of the membrane module in MBR, certain substances are accumulated on the surface of the membrane to cause the increase of the filtration resistance of the membrane and the pollution of the membrane. The particle size of the sludge particles can affect the deposition of sludge on the membrane surface, thereby affecting the degree of membrane fouling. The particle size of the mixed liquid particles of the upper sludge is larger, and the corresponding membrane filtration performance is better. In the process of membrane filtration, small sludge particles can be preferentially adsorbed on the surface of a membrane to cause membrane pollution; moreover, the filter cake formed by the small-particle sludge is generally compact and has large specific resistance.
Methods to mitigate membrane fouling are generally: 1. the process is operated under the critical membrane flux, 2, the hydrophilicity of the membrane surface is improved, and 3, the membrane component is cleaned. These methods, however, are generally limited. For example, the actual flux requirements of a process are often higher than the critical flux at which running the process may not meet the actual requirements of the process; modifying the surface of the film often results in a higher cost of the film; for the third method, the method of aeration is adopted to wash the pollutants on the membrane surface, but larger bubbles are needed, so that the oxygen mass transfer efficiency is reduced; in addition, the violent aeration often destroys the sludge floc structure, thereby releasing a large amount of sludge and reducing the sludge particle size.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects and provide a durable anti-fouling hollow fiber membrane separation device.
In order to achieve the above purpose, the utility model discloses a realize through following technical scheme:
a stain-resistant durable hollow fiber membrane separation device sequentially comprises an adjusting tank, a sedimentation tank and a hollow fiber membrane separation tank, wherein a water inlet is formed in the adjusting tank, a vent hole is formed in the bottom of the hollow fiber membrane separation tank, the adjusting tank is communicated with the sedimentation tank through a first connecting pipe, the sedimentation tank is communicated with the hollow fiber membrane separation tank through a second connecting pipe, and a membrane component and an aeration device are arranged in the hollow fiber membrane separation tank; the membrane module comprises a frame body and a plurality of hollow fiber membranes arranged on the frame body; the frame body comprises an upper frame body, a lower frame body and a fixed frame, the fixed frame is fixed between the upper frame body and the lower frame body, a transmission shaft is arranged on the upper frame body, and the transmission shaft extends out of the hollow fiber membrane separation tank and is connected with a rotating motor; the upper end of the hollow fiber membrane is sealed and fixed on the upper frame body, the lower end of the hollow fiber membrane is fixed on the lower frame body and is connected with a water collecting pipe, the water collecting pipe is collected and connected with a water outlet pipe, the bottom of the hollow fiber membrane separation tank is provided with a water outlet, the water collecting pipe is connected with the water outlet through a sealing bearing, and the outside of the water outlet is connected with a peristaltic pump through a water pipe; the aeration device comprises an air pump and an aeration disc, and the aeration disc is arranged at the bottom of the hollow fiber membrane separation tank and is positioned below the frame body.
Further, a dosing device is arranged on the adjusting tank.
Furthermore, an overflow partition plate is arranged in the sedimentation tank, the sedimentation tank is divided into a sedimentation area and an overflow area by the overflow partition plate, an inclined pipe is arranged at the upper part of the sedimentation area, the first connecting pipe is positioned below the inclined pipe, and the second connecting pipe is positioned at the lower part of the overflow area.
Further, sludge pumps are arranged on the adjusting tank and the sedimentation tank.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model reduces most small sludge particles in water of a MBR front-stage biological treatment unit by adding a flocculating agent into the regulating tank and precipitating in the sedimentation tank, and reduces pollution to the membrane component;
2. the utility model discloses a membrane module is rotatory, and high shear rate can effectively weaken the formation on filter cake layer and reduce concentration polarization to reach the purpose that slows down membrane pollution and improve membrane flux.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, the anti-fouling durable hollow fiber membrane separation device sequentially comprises an adjusting tank 1, a sedimentation tank 2 and a hollow fiber membrane separation tank 3, wherein a water inlet 4 is formed in the adjusting tank 1, a vent 5 is formed in the bottom of the hollow fiber membrane separation tank 3, the adjusting tank 1 is communicated with the sedimentation tank 2 through a first connecting pipe 6, the sedimentation tank 2 is communicated with the hollow fiber membrane separation tank 3 through a second connecting pipe 7, and a membrane component and an aeration device are arranged in the hollow fiber membrane separation tank 3; the membrane module comprises a frame body 31 and a plurality of hollow fiber membranes 32 arranged on the frame body 31; the frame body 31 comprises an upper frame body, a lower frame body and a fixed frame, the fixed frame is fixed between the upper frame body and the lower frame body, a transmission shaft 32 is arranged on the upper frame body, and the transmission shaft 32 extends out of the hollow fiber membrane separation tank 3 and is connected with a rotating motor 33; the upper end of the hollow fiber membrane 32 is sealed and fixed on the upper frame body, the lower end of the hollow fiber membrane is fixed on the lower frame body and is connected with a water collecting pipe, the water collecting pipe is connected with a water outlet pipe 34 in a gathering mode, the bottom of the hollow fiber membrane separation tank 3 is provided with a water outlet 35, the water outlet pipe 34 is connected to the water outlet 35 through a sealing bearing 36, and the outside of the water outlet 35 is connected with a peristaltic pump 37 through a water pipe; the aeration device comprises an air pump 38 and an aeration disc 39, and the aeration disc 39 is arranged at the bottom of the hollow fiber membrane separation tank 3 and is positioned below the frame body 31. And a dosing device 11 is arranged on the regulating reservoir 1 and used for adding a flocculating agent or a coagulating agent into the regulating reservoir. An overflow partition plate 21 is arranged in the sedimentation tank 2, the sedimentation tank is divided into a sedimentation area and an overflow area by the overflow partition plate 21, an inclined pipe 22 is arranged at the upper part of the sedimentation area, the first connecting pipe 6 is positioned below the inclined pipe 22, and the second connecting pipe 7 is positioned at the lower part of the overflow area. Sludge pumps 8 are arranged on the adjusting tank 1 and the sedimentation tank 2.
The working principle is as follows: the sewage through biological treatment enters the regulating reservoir to be mixed with the flocculating agent, substances such as sludge particles in water are flocculated, most of the substances are precipitated in the regulating reservoir, the other part of the substances enter the sedimentation reservoir along with water flow to be further precipitated, the inclined tube can improve the precipitation efficiency, the precipitated water enters the hollow fiber membrane separation tank through the overflow area, and the water enters the water outlet pipe through the hollow fiber membrane under the pressure of the peristaltic pump to obtain the effluent with excellent water quality. In the running process of the system, the membrane component rotates all the time, and high shear rate is generated on the surface of the membrane, so that the aims of slowing down membrane pollution and improving membrane flux are fulfilled.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A stain-resistant durable hollow fiber membrane separation device comprises an adjusting tank, a sedimentation tank and a hollow fiber membrane separation tank in sequence, wherein the adjusting tank is provided with a water inlet, the bottom of the hollow fiber membrane separation tank is provided with a vent, the adjusting tank is communicated with the sedimentation tank through a first connecting pipe, the sedimentation tank is communicated with the hollow fiber membrane separation tank through a second connecting pipe,
the hollow fiber membrane separation tank is internally provided with a membrane component and an aeration device;
the membrane module comprises a frame body and a plurality of hollow fiber membranes arranged on the frame body;
the frame body comprises an upper frame body, a lower frame body and a fixed frame, the fixed frame is fixed between the upper frame body and the lower frame body, a transmission shaft is arranged on the upper frame body, and the transmission shaft extends out of the hollow fiber membrane separation tank and is connected with a rotating motor;
the upper end of the hollow fiber membrane is sealed and fixed on the upper frame body, the lower end of the hollow fiber membrane is fixed on the lower frame body and is connected with a water collecting pipe, the water collecting pipe is collected and connected with a water outlet pipe, the bottom of the hollow fiber membrane separation tank is provided with a water outlet, the water collecting pipe is connected with the water outlet through a sealing bearing, and the outside of the water outlet is connected with a peristaltic pump through a water pipe;
the aeration device comprises an air pump and an aeration disc, and the aeration disc is arranged at the bottom of the hollow fiber membrane separation tank and is positioned below the frame body.
2. The anti-fouling durable hollow fiber membrane separation device according to claim 1, wherein a dosing device is arranged on the regulating reservoir.
3. The anti-fouling durable hollow fiber membrane separation device according to claim 1, wherein an overflow partition plate is arranged in the sedimentation tank, the overflow partition plate divides the sedimentation tank into a sedimentation zone and an overflow zone, an inclined pipe is arranged at the upper part of the sedimentation zone, the first connecting pipe is positioned below the inclined pipe, and the second connecting pipe is positioned at the lower part of the overflow zone.
4. The apparatus of claim 1, wherein the adjusting tank and the sedimentation tank are provided with sludge pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121564257.1U CN215209035U (en) | 2021-07-11 | 2021-07-11 | Anti-fouling durable hollow fiber membrane separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121564257.1U CN215209035U (en) | 2021-07-11 | 2021-07-11 | Anti-fouling durable hollow fiber membrane separation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215209035U true CN215209035U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121564257.1U Active CN215209035U (en) | 2021-07-11 | 2021-07-11 | Anti-fouling durable hollow fiber membrane separation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215209035U (en) |
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2021
- 2021-07-11 CN CN202121564257.1U patent/CN215209035U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220210 Address after: 322200 No. 2, Zhongshan North Road, Pujiang County, Jinhua City, Zhejiang Province Patentee after: ZHEJIANG PUJIANG GABRIEL ECOLOGICAL TECHNOLOGY CO.,LTD. Address before: 312000 room 1611, No. 683, Shunjiang Road, Yuecheng District, Shaoxing City, Zhejiang Province Patentee before: SHAOXING YUANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |