CN108246108B - Double-water-outlet flat plate type membrane element - Google Patents
Double-water-outlet flat plate type membrane element Download PDFInfo
- Publication number
- CN108246108B CN108246108B CN201810167028.2A CN201810167028A CN108246108B CN 108246108 B CN108246108 B CN 108246108B CN 201810167028 A CN201810167028 A CN 201810167028A CN 108246108 B CN108246108 B CN 108246108B
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- China
- Prior art keywords
- membrane
- flow channels
- water outlet
- membrane element
- water
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- 239000012528 membrane Substances 0.000 title claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 230000009977 dual effect Effects 0.000 claims 5
- 230000004907 flux Effects 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 3
- 230000001934 delay Effects 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
- B01D63/087—Single membrane modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/08—Flow guidance means within the module or the apparatus
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a flat plate type membrane element with double water outlets, which comprises a membrane element with staggered and connected oblique flow channels in the middle, wherein one side of the membrane element is provided with a plurality of vertical flow channels, the vertical flow channels are connected with the oblique flow channels, a first water outlet connected with the vertical flow channels is arranged at the top of the vertical flow channels, and a second water outlet connected with the vertical flow channels and the oblique flow channels is arranged below the first water outlet. The flow channel design of the invention increases the flow channel distribution on the surface of the membrane plate, improves the water collection efficiency, reduces the probability of occurrence of suction dead angles, thereby improving the actual running flux of the membrane, and in addition, the flow channel is inclined to the water outlet, is more suitable for the negative pressure distribution condition that the surface of the membrane is fan-shaped and gradually reduced, can keep the water permeation rate on each part of the surface of the membrane balanced, greatly delays the time of fouling occurrence of the membrane, reduces the cleaning frequency of the membrane, prolongs the service life of the membrane and saves the running cost.
Description
Technical Field
The invention relates to an improvement on a flat membrane element for water treatment, in particular to a flat membrane element with double water outlets.
Background
The water-saving sewage treatment and recycling method is an effective measure for developing and utilizing water resources. The sewage reuse is to treat city sewage and industrial sewage with membrane bioreactor and other equipment and to use the treated sewage for greening, flushing, replenishing ornamental water and other non-drinking purposes. The membrane bioreactor is a novel sewage treatment system organically combining a membrane separation technology and a biological treatment technology. The membrane component replaces the traditional biological treatment technology end secondary sedimentation tank, so that the high active sludge concentration is maintained in the bioreactor, and the biological treatment organic load is improved.
In a membrane bioreactor, a membrane is put into the bioreactor in the form of a membrane module, and the existing membrane module is usually an integrated structure composed of a plurality of membrane elements and an aeration device, wherein the membrane elements are mostly tubular membranes or flat membranes.
The water outlet of the traditional single water outlet membrane element is generally arranged at the top of the membrane element, and as the surface area of a single membrane is larger, the suction negative pressure difference of the surface of the membrane is larger due to the suction of the single water outlet, the negative pressure at one end close to the water outlet is larger, and the water permeation rate is larger; the negative pressure at the far end is small, and the water permeation rate is small. The membrane of bottom probably does not fully utilize like this, influences the actual operation flux of membrane, and on the other hand can lead to the dirty stifled condition of membrane inconsistent, and the one end that is close to the delivery port is dirty stifled serious, and the one end that keeps away from is dirty stifled lighter, influences the abluent effect of medicament, will influence the whole life of membrane under the condition of long-term operation.
The water outlet of the traditional double-water-outlet membrane element is vertical, and only three diversion trenches are arranged transversely. The negative pressure of suction is gradually reduced outwards in a fan shape from the water outlet on the surface of the membrane, the flow channel design can lead to the reduction of the water transmission rate, and simultaneously, the suction dead angle under certain conditions can appear, so that the actual water outlet flux of the membrane is reduced, and the fouling and blocking condition of the membrane are quickened.
Disclosure of Invention
The invention aims to: the invention aims to overcome the defects of the prior art and provides a flat membrane element with double water outlets.
The technical scheme is as follows: in order to achieve the above object, the present invention is specifically accomplished in the following manner: a flat plate type membrane element with double water outlets comprises a membrane element with staggered and connected oblique flow channels in the middle, wherein a plurality of vertical flow channels are arranged on one side of the membrane element, the vertical flow channels are connected with the oblique flow channels, a first water outlet connected with the vertical flow channels is arranged at the top of the vertical flow channels, and a second water outlet connected with the vertical flow channels and the oblique flow channels is arranged below the first water outlet.
Wherein, the second water outlet is optimally arranged at 1/3 of the height of one side of the membrane element.
The first water outlet and the second water outlet are transversely arranged on one side of the membrane element and are perpendicular to the vertical flow channel.
Wherein, the number of the vertical runners is preferably 3.
Wherein, the width of the inclined flow channel is preferably 2mm, and the inclined flow channel forms an inclined angle of 30 degrees with the horizontal plane.
Wherein, the vertical runner is preferably 2.5mm in width.
Wherein, a rectangular water collecting area with the length of 18mm and the width of 5mm is arranged in the first water outlet and the second water outlet.
The beneficial effects are that: compared with the prior art, the invention has the following advantages:
1. According to the invention, the membrane element is designed into the double water outlets, one water outlet is arranged at the top of the side surface of the membrane element, and the other water outlet is arranged at the position 2/3 of the side surface of the membrane element from the top, so that the defect that the membrane is not fully utilized is avoided, the water outlet flux of the membrane is improved, the suction negative pressure on the surface of the membrane can be effectively kept balanced, the pollution condition distribution on the surface of the membrane is relatively uniform, the cleaning effect of the medicament is greatly improved, and the service life of the membrane is prolonged;
2. The inclined flow channels are mutually intersected, 3 vertical flow channels are arranged on one side close to the water outlet, and a rectangular water collecting area is arranged on the inner side of the water outlet and used for collecting water penetrating through two sides of the membrane, so that water is sucked out through the water outlet;
3. The flow channel design of the invention increases the flow channel distribution on the surface of the membrane plate, improves the water collection efficiency, reduces the probability of occurrence of suction dead angles, thereby improving the actual running flux of the membrane, and in addition, the flow channel is inclined to the water outlet, is more suitable for the negative pressure distribution condition that the surface of the membrane is fan-shaped and gradually reduced, can keep the water permeation rate on each part of the surface of the membrane balanced, greatly delays the time of fouling occurrence of the membrane, reduces the cleaning frequency of the membrane, prolongs the service life of the membrane and saves the running cost.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
Example 1:
The flat plate type membrane element with double water outlets as shown in fig. 1 comprises a membrane element 1 with oblique flow channels 2 which are connected in a staggered manner in the middle, a plurality of vertical flow channels 3 are arranged on one side of the membrane element 1, the vertical flow channels 3 are connected with the oblique flow channels 2, a first water outlet 4 connected with the vertical flow channels 3 is arranged at the top of the vertical flow channels 3, and a second water outlet 5 connected with the vertical flow channels 3 and the oblique flow channels 2 is arranged below the first water outlet 4.
Example 2:
With reference to embodiment 1, the second water outlet is arranged at 1/3 height of one side of the membrane element.
Example 3:
in reference to embodiment 1, the first water outlet and the second water outlet are transversely arranged on one side of the membrane element and are perpendicular to the vertical flow channel.
Example 4:
referring to embodiment 1, the number of the vertical flow channels is 3.
Example 5:
Referring to the embodiment 1, the width of the inclined flow channel is 2mm, and the inclined flow channel forms an inclined angle of 30 degrees with the horizontal plane; the width of the vertical runner is 2.5mm; rectangular water collecting areas with the length of 18mm and the width of 5mm are arranged in the first water outlet and the second water outlet.
Claims (7)
1. The flat plate type membrane element with the double water outlets is characterized by comprising a membrane element with staggered and connected oblique flow channels in the middle, wherein a plurality of vertical flow channels are arranged on one side of the membrane element, the vertical flow channels are connected with the oblique flow channels, a first water outlet connected with the vertical flow channels is arranged at the top of the vertical flow channels, and a second water outlet connected with the vertical flow channels and the oblique flow channels is arranged below the first water outlet.
2. The dual water outlet flat plate type membrane element according to claim 1, wherein the second water outlet is arranged at 1/3 height of one side of the membrane element.
3. The dual water outlet flat plate type membrane element according to claim 1 or 2, wherein the first water outlet and the second water outlet are transversely arranged at one side of the membrane element.
4. The dual water outlet flat plate membrane element according to claim 1, wherein the number of vertical flow channels is 3.
5. The dual water outlet flat plate type membrane element according to claim 1, wherein the width of the inclined flow channel is 2mm, and an inclined angle of 30 degrees is formed between the inclined flow channel and the horizontal plane.
6. The dual water outlet flat plate membrane element according to claim 1, wherein the width of the vertical flow channel is 2.5mm.
7. The flat membrane element with double water outlets according to claim 1, wherein rectangular water collecting areas with the length of 18mm and the width of 5mm are arranged in the first water outlet and the second water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167028.2A CN108246108B (en) | 2018-02-28 | 2018-02-28 | Double-water-outlet flat plate type membrane element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167028.2A CN108246108B (en) | 2018-02-28 | 2018-02-28 | Double-water-outlet flat plate type membrane element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108246108A CN108246108A (en) | 2018-07-06 |
| CN108246108B true CN108246108B (en) | 2024-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810167028.2A Active CN108246108B (en) | 2018-02-28 | 2018-02-28 | Double-water-outlet flat plate type membrane element |
Country Status (1)
| Country | Link |
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| CN (1) | CN108246108B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110465205A (en) * | 2019-09-10 | 2019-11-19 | 中欧兴华膜技术（成都）有限公司 | Changeable type plate membrane |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208097838U (en) * | 2018-02-28 | 2018-11-16 | 江苏沛尔膜业股份有限公司 | A kind of flat membrane component of double outlets |
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| TW255835B (en) * | 1994-01-07 | 1995-09-01 | Kubota Kk | Filtration membrane module |
| JP4140155B2 (en) * | 1999-12-14 | 2008-08-27 | 株式会社日立プラントテクノロジー | Immersion flat membrane separator |
| EP1341597A1 (en) * | 2000-12-04 | 2003-09-10 | Kubota Corporation | Multistage immersion type membrane separator and high-concentration wastewater treatment facility using same |
| JP2008073680A (en) * | 2006-09-22 | 2008-04-03 | Membrane-Tec Co Ltd | Cartridge for filtration |
| JP5361310B2 (en) * | 2008-09-26 | 2013-12-04 | 株式会社クボタ | Membrane cartridge |
| JP5361312B2 (en) * | 2008-09-26 | 2013-12-04 | 株式会社クボタ | Membrane cartridge |
| JP2011050907A (en) * | 2009-09-03 | 2011-03-17 | Hitachi Plant Technologies Ltd | Flat membrane element |
| CN202237815U (en) * | 2011-04-14 | 2012-05-30 | 江苏蓝天沛尔膜业有限公司 | Flat-sheet membrane element |
| WO2013125506A1 (en) * | 2012-02-24 | 2013-08-29 | 東レ株式会社 | Separation membrane element and separation membrane module |
| CN103239999B (en) * | 2013-06-08 | 2016-07-13 | 上海希沃环境科技有限公司 | The flat membrane component that a kind of permeant flux is uniform |
| CN204051454U (en) * | 2014-07-03 | 2014-12-31 | 江苏大孚膜科技有限公司 | A kind of flat membrane component |
| CN104190263B (en) * | 2014-09-12 | 2016-02-24 | 常州大学 | Two water-collecting type flat membrane component and gripper shoe thereof |
| CN104307375B (en) * | 2014-10-16 | 2016-09-07 | 上海一华环保科技有限公司 | A kind of resistant to pollution flat membrane component of lower resistance short route |
| CN104399373B (en) * | 2014-10-16 | 2016-08-24 | 上海一华环保科技有限公司 | A kind of multichannel two-layer equation flat board film group device |
| CN106925126B (en) * | 2017-03-24 | 2019-11-01 | 同济大学 | A kind of soft flat membrane component of MBR and its membrane module |
| CN206814471U (en) * | 2017-05-12 | 2017-12-29 | 上海斯纳普膜分离科技有限公司 | Plain filter membrane component |
| CN107670508A (en) * | 2017-10-20 | 2018-02-09 | 成都美富特膜科技有限公司 | A kind of novel flexible flat membrane component |
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- 2018-02-28 CN CN201810167028.2A patent/CN108246108B/en active Active
Patent Citations (1)
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|---|---|---|---|---|
| CN208097838U (en) * | 2018-02-28 | 2018-11-16 | 江苏沛尔膜业股份有限公司 | A kind of flat membrane component of double outlets |
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| CN108246108A (en) | 2018-07-06 |
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