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CN106040005A - Long-acting spiral-wound membrane module - Google Patents

Long-acting spiral-wound membrane module Download PDF

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Publication number
CN106040005A
CN106040005A CN201610546127.2A CN201610546127A CN106040005A CN 106040005 A CN106040005 A CN 106040005A CN 201610546127 A CN201610546127 A CN 201610546127A CN 106040005 A CN106040005 A CN 106040005A
Authority
CN
China
Prior art keywords
central canal
shell
hydrophobic cloth
conductive contact
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610546127.2A
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Chinese (zh)
Other versions
CN106040005B (en
Inventor
廖忠烈
罗意
高亮娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Minsheng Pipe Industry Co Ltd
Original Assignee
Sichuan Minsheng Pipe Industry Co Ltd
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Priority to CN201610546127.2A priority Critical patent/CN106040005B/en
Publication of CN106040005A publication Critical patent/CN106040005A/en
Application granted granted Critical
Publication of CN106040005B publication Critical patent/CN106040005B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D63/00Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10Spiral-wound membrane modules
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D65/00Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02Membrane cleaning or sterilisation ; Membrane regeneration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2321/00Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/22Electrical effects
    • B01D2321/223Polarity reversal

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention discloses a long-acting spiral-wound membrane module which comprises a plurality of spiral-wound membrane elements, a center pipe and a shell. The problems that once membranes are polluted, halt is needed for cleaning, pure water is used every day for cleaning the membrane elements in a back flushing mode, and the membrane elements need to be cleaned with acid and alkali regularly are solved. A hydrophobic cloth (9) is used as a carbon fiber hydrophobic cloth, a flat conductive contact is pulled out of the carbon fiber hydrophobic cloth, all conductive contacts are named according to arranging sequence numbers, the conductive contacts with odd sequence numbers are connected in parallel to form an electrode A, the conductive contacts with even sequence numbers are connected in parallel to form an electrode B, and the electrode A and the electrode B are led out of the shell (7) through the center pipe (6) to be connected with a polarity-adjustable power source.

Description

Long-acting rolled membrane module
Technical field:
The present invention is relevant with rolled membrane module.
Background technology:
Rolled membrane module is that existing market uses the most widest film application form, and it is big that it is mainly characterized by loading density, makes With easy and simple to handle.In great majority film occasion, film is all to occur with the form of rolled film.Rolled membrane module mainly uses Flat Membrane Sheet rolls and forms.Include the assemblies such as flat board diaphragm, runner spacer web, dialysis solution collecting pipe, putamina.
Wound membrane element is one hydrophobic cloth of folder between two permeable membranes, and the long letter forming a rectangle is closed in three limit heat seals The flat board diaphragm of envelope shape, unclosed opening edge just hole to central canal, the dialysis solution through film just can be collected into central canal In.Wound membrane element is wound by a flat board diaphragm and runner spacer web and forms, and is referred to as " single leaf ".Commercialization rolled membrane module is big Many employing " leafy " structures.In the case of membrane area is substantially the same, the runner of the permeate of leafy more single leaf is short, reduces back pressure Lose, improve flux, also make runner flowing everywhere more uniform.Leafy wound membrane element is to open unclosed for flat board diaphragm Just hole to central canal, mouthful limit is cohered on central canal, is re-lining with a runner spacer web, until cohering multi-disc flat board diaphragm also One-tenth spiral wound it is wound on central canal every lining multi-disc runner spacer web.
The former water of wound membrane element introduces from membrane component end, and the direction flowing parallel along film surface, be separated is saturating Analysis liquid is then perpendicular to film surface and enters hydrophobic cloth, and so, dialysis solution and former water form the vertically and laterally two kinds of flow directions that intersect. Zwitterion, salinity and colloid in water is left in former water (forming dense water step by step), and is taken away by lateral current, if film The water flux of element is excessive, or the response rate too high (referring to exceed maker directive/guide regulation), and salinity and colloid are detained on the surface of the film Probability the biggest.Excessive concentration can form concentration polarization, and zwitterion, salinity and colloidal solid can polluted membrane surfaces.
Wound membrane element major advantage:
1. compact conformation, in unit volume, effective film area is bigger.
2. processing technology is relatively easy.
3. install, operate more convenient.
But its shortcoming is in use, film is once contaminated, and needs stop cleaning, and every day is clear with water purification recoil Wash membrane component, periodically to clean membrane component with acid, alkali respectively.The infringement that membrane component is caused by traditional cleaning way, adds The discharge of waste water, reduces the service life of membrane component, improves the operating cost of device.
Summary of the invention:
It is an object of the invention to provide a kind of membrane module while filtering can self-cleaning, the service life of membrane component Long, that the operational efficiency of device is high rolled membrane module.
The present invention is achieved in that
The present invention includes that wound membrane element 5, central canal 6, shell 7, wound membrane element 5 are to press from both sides at least one between two permeable membranes 10 Opening the first hydrophobic cloth 9, three limit heat seals are closed the flat board diaphragm of the long envelope shape forming rectangles, are opened unclosed for flat board diaphragm Just hole to central canal, mouthful limit is cohered on central canal, and one runner spacer web 11 of lining between two wound membrane element 5, multi-disc is put down Plate diaphragm and runner spacer web 11 are wound on central canal composition helical coil, and helical coil is positioned at shell 7, outside central canal 6 is positioned at Columella line, its upper and lower end is connected with sealing flange 4, permeable pad 8 between helical coil and sealing flange 4, shell 7 times Intake antrum between end and sealing flange 4 has original water inlet 1, the water chamber between shell 7 upper end and sealing flange 4 to have dense Water outlet 3 connects permeable pad 8, and pure water inlet 2 is positioned at external part on central canal 6, and the first hydrophobic cloth 9 is the hydrophobic cloth of carbon fiber, A flat conductive contact is extracted out, by the conductive contact of all of first hydrophobic cloth 9 according to arrangement in the hydrophobic cloth of carbon fiber Serial number is named, and is connected in parallel by odd number conductive contact as A electrode, is connected in parallel by even number conductive contact as B electricity Pole, two electrodes of A, B are connected with adjustable polarity power from shell 7 extraction by central canal 6.
Including some wound membrane element 5, central canal 6, shell 7, wound membrane element 5 is to press from both sides one between two permeable membranes 10 First hydrophobic cloth 9, the flat board diaphragm of the long envelope shape forming a rectangle is closed in three limit heat seals, by unclosed for flat board diaphragm opening Just hole to central canal, limit is cohered on central canal, and multi-disc flat board diaphragm and runner spacer web 11 are wound on central canal composition spiral shell Circumvolution, helical coil is positioned at shell 7, and central canal 6 is positioned at housing axis, and its upper and lower end is connected with sealing flange 4, permeable pad 8 Between helical coil and sealing flange 4, the intake antrum between shell 7 lower end and sealing flange 4 has original water inlet 1, outward Water chamber between shell 7 upper end and sealing flange 4 has condensed water outlet 3 to be connected permeable pad 8, and pure water inlet 2 is positioned at central canal 6 Upper external part, two runner spacer webs 11 of lining between two wound membrane element 5, one second, the folder of two runner spacer webs 11 is dredged Water cloth 9, the second hydrophobic cloth is the hydrophobic cloth of carbon fiber, extracts a flat conductive contact out, by second in the hydrophobic cloth of carbon fiber The hydrophobic all of conductive contact of cloth 9 is named according to the number of putting in order, and is connected in parallel by odd number conductive contact as A electrode, general Even number conductive contact is connected in parallel as B electrode, and two electrodes of A, B are drawn and adjustable polarity electricity from shell 7 by central canal 6 Source connects.
Hydrophobic cloth is extracted out flat thickness 0.2mm, width 8mm, a conductive contact for length 36mm.
The present invention is made the material of the hydrophobic cloth 9 in flat board diaphragm into same specification, electric conductivity with size by nylon material The hydrophobic cloth of carbon fiber that energy is good, has drawn two electrodes of A, B respectively at two symmetrical ports.Connect adjustable polarity power, Electric field is formed in wound membrane element.Partly deposit anion on diaphragm, another part diaphragm deposits cation.By certain week Phase converting power source polarity, due to gravitation and the repulsion effect of electric field, the anions and canons on diaphragm starts to exchange, thus departs from film Sheet, is carried over diaphragm with the flowing of former water.
The polarity of conversion electric field has just reached to clean the function of diaphragm, makes the membrane element that original every day cleans with water purification recoil Part and the membrane component periodically cleaned with acid, alkali respectively almost no longer clean.Owing to not using excessive pressure and excessive temperature Solution carries out positive and negative cleaning to diaphragm, and therefore the life-span of element is greatly prolonged.Improve the operational efficiency of device.
Accompanying drawing illustrates:
Fig. 1 is present configuration figure.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Detailed description of the invention:
Embodiment 1:
The present invention includes that wound membrane element 5, central canal 6, shell 7, wound membrane element 5 are to press from both sides one the between two permeable membranes 10 One hydrophobic cloth 9, the flat board diaphragm of the long envelope shape forming a rectangle is closed in three limit heat seals, by unclosed for flat board diaphragm opening edge The just hole to central canal is cohered on central canal, one runner spacer web 11 of lining, multi-disc Flat Membrane between two wound membrane element 5 Sheet and runner spacer web 11 are wound on central canal composition helical coil, and helical coil is positioned at shell 7, and central canal 6 is positioned at enclosure axis Line, its upper and lower end is connected with sealing flange 4, permeable pad 8 between helical coil and sealing flange 4, shell 7 lower end with Intake antrum between sealing flange 4 has original water inlet 1, the water chamber between shell 7 upper end and sealing flange 4 to have condensed water The outlet 3 permeable pad 8 of connection, pure water inlet 2 is positioned at external part on central canal 6, and the first hydrophobic cloth 9 is the hydrophobic cloth of carbon fiber, at carbon The hydrophobic cloth of fiber is extracted a flat conductive contact, by all of first hydrophobic cloth 9 conductive contact according to the number of putting in order out Name, is connected in parallel odd number conductive contact as A electrode, is connected in parallel even number conductive contact into B electrode, A, B Two electrodes are connected with adjustable polarity power from shell 7 extraction by central canal 6.
Hydrophobic cloth is extracted out flat thickness 0.2mm, width 8mm, a conductive contact for length 36mm.
Embodiment 2:
Including some wound membrane element 5, central canal 6, shell 7, wound membrane element 5 is to press from both sides one first between two permeable membranes 10 Hydrophobic cloth 9, three limit heat seals close the flat board diaphragm of the long envelope shape forming a rectangle, by unclosed for flat board diaphragm opening edge just The hole of central canal is cohered on central canal, at least one runner spacer web 11 of lining, multi-disc flat board between two wound membrane element 5 Diaphragm and runner spacer web 11 are wound on central canal composition helical coil, and helical coil is positioned at shell 7, and central canal 6 is positioned at shell Axis, its upper and lower end is connected with sealing flange 4, permeable pad 8 between helical coil and sealing flange 4, shell 7 lower end And the intake antrum between sealing flange 4 has original water inlet 1, the water chamber between shell 7 upper end and sealing flange 4 to have concentration Water out 3 connects permeable pad 8, and pure water inlet 2 is positioned at external part on central canal 6, two runners of lining between two wound membrane element 5 Spacer web 11, second hydrophobic cloth 9 of the folder of two runner spacer webs 11, the second hydrophobic cloth is the hydrophobic cloth of carbon fiber, fine at carbon Tie up one flat conductive contact of extraction in hydrophobic cloth, the second hydrophobic all of conductive contact of cloth 9 is ordered according to the number of putting in order Name, is connected in parallel odd number conductive contact as A electrode, is connected in parallel by even number conductive contact as B electrode, A, B two Individual electrode is connected with adjustable polarity power from shell 7 extraction by central canal 6.
Experimental example:
From the former water of original water inlet 1 through the periphery of ring flange 4 and permeable pad 8, enter in rustless steel putamina 7, at pressure Under effect, former water enters hydrophobic cloth 9 through permeable membrane 10, and entering collector pipe 6 under pressure becomes water purification, pure water inlet 2 Outflow is collected;A part of former water along film post through permeable pad 8 along the periphery of ring flange 4 and permeable pad 8 through going out to concentrate the mouth of a river 3 Discharge condensed water.
A, B are electrode, when film post works, the unidirectional current on A, B electrode, every 5-10 minute conversion polarity, A just, B Negative, after 5-10 minute, become that A is negative, B just, so every 5-10 minute circulation primary, test voltage is 12V-36V.
Rolled film post with two kinds of different area of NF is explained for experimental example below:
Experimental example 1:
Long-acting rolled membrane module structure is the structure of embodiment 1.
Being rolled into the NF film post similar to Fig. 1 structure with flat board diaphragm, the area of film is 1, when temperature is 20 DEG C~28 DEG C, use tap water to make former water, be that 4L/min pumps into former water to NF film post with the water pump that pressure is 1.6MPa by flux, be not added with On the premise of reversal power supply, can stream time at about 3 days, As time goes on, water yield reduces per hour About 2%, after 72 hours, film is blocked, substantially can not be then exhausted from water purification, and wastewater flow rate increases to about 4L/min.
When on A, B electrode plus the power supply of adjustable polarity, voltage is V2, and electric current is 0.3A.When polarity conversion in every 8 minutes A when time, the water purification output of NF film post is about 3.4L/min, and wastewater effluent amount is about 0.6L/min, ensuing 30 days In, the output of water purification successively decreases 1% for every 3 days, and waste water output is incremented by 1% for every 3 days, continuously after work 60 days, and rolling NF film post Still can work on.
Experimental example 2:
Long-acting rolled membrane module structure is the structure of embodiment 2.
Being rolled into the NF film post similar to Fig. 1 structure with flat board diaphragm, membrane area is 9, when temperature is 20 DEG C~28 DEG C, Use tap water to make former water, be that 60L/min pumps into former water to film post, in not additive polarity with the water pump that pressure is 1.6MPa by flux On the premise of converting power source, can stream time at about 3 days, As time goes on, it is left that water yield reduces 2% per hour The right side, after 72 hours, film is blocked, substantially can not be then exhausted from water purification, and wastewater flow rate increases to about 60L/min.
When on A, B electrode plus the power supply of adjustable polarity, voltage is V1, and electric current is 3A.When polarity conversion one in every 8 minutes Time secondary, water purification average output is 52 L/min, and waste water output is 8 L/min, As time goes on, and every 3 days water purification Output will successively decrease about 1%, and waste water output will be incremented by about 1% for every 3 days, the most continuously after work 60 days, and rolling Film post still can work on.
Above-mentioned test is done with tri-kinds of flat board diaphragms of RO, UF, MF, under suitable DC voltage, regular reverse, have The same effect extending the cleaning frequency.

Claims (3)

  1. The most long-acting rolled membrane module, including some wound membrane element (5), central canal (6), shell (7), wound membrane element is two Pressing from both sides a first hydrophobic cloth (9) between permeable membrane (10), the Flat Membrane of the long envelope shape forming a rectangle is closed in three limit heat seals Sheet, by unclosed for flat board diaphragm opening edge, just hole to central canal is cohered on central canal, and between two wound membrane element, lining is extremely A few runner spacer web (11), multi-disc flat board diaphragm and runner spacer web are wound on central canal composition helical coil, helical coil Being positioned at shell, central canal is positioned at housing axis, and its upper and lower end is connected with sealing flange (4), and permeable pad (8) is positioned at spiral Between volume and sealing flange, the intake antrum between shell lower end and sealing flange has original water inlet (1), and shell upper end is with close Water chamber between envelope ring flange has condensed water outlet (3) to connect permeable pad, and pure water inlet (2) is positioned at external part on central canal, It is characterized in that the first hydrophobic cloth (9) is the hydrophobic cloth of carbon fiber, the hydrophobic cloth of carbon fiber extracted out a flat conductive contact, The conductive contact of all of first hydrophobic cloth is named according to the number of putting in order, odd number conductive contact is connected in parallel as A Electrode, is connected in parallel as B electrode by even number conductive contact, and two electrodes of A, B are drawn with adjustable from shell by central canal Polarity power connects.
  2. The most long-acting rolled membrane module, it is characterised in that include some wound membrane element (5), central canal (6), shell (7), rolled film Element is one the first hydrophobic cloth (9) of folder between two permeable membranes (10), and the long envelope forming a rectangle is closed in three limit heat seals The flat board diaphragm of shape, by unclosed for flat board diaphragm opening edge, just hole to central canal is cohered on central canal, two wound membrane element Between at least one runner spacer web (11) of lining, multi-disc flat board diaphragm and runner spacer web be wound on central canal composition spiral Volume, helical coil is positioned at shell, and central canal is positioned at housing axis, and its upper and lower end is connected with sealing flange (4), permeable pad (8) Between helical coil and sealing flange, the intake antrum between shell lower end and sealing flange has original water inlet (1), shell Water chamber between upper end with sealing flange has condensed water outlet (3) to be connected permeable pad, and pure water inlet (2) is positioned on central canal External part, it is characterised in that two runner spacer webs (11) of lining between two wound membrane element (5), between two runner spacer webs Pressing from both sides a second hydrophobic cloth, the second hydrophobic cloth is the hydrophobic cloth of carbon fiber, extracts a flat conduction in the hydrophobic cloth of carbon fiber out Joint, names the second all of conductive contact of hydrophobic cloth according to the number of putting in order, is connected in parallel by odd number conductive contact For A electrode, even number conductive contact is connected in parallel into B electrode, two electrodes of A, B by central canal from shell draw with can Tune polarity power connects.
  3. Long-acting rolled membrane module the most according to claim 1 and 2, it is characterised in that extracting conductive contact in hydrophobic cloth out is one Individual flat thickness 0.2mm, width 8mm, the conductive contact of length 36mm.
CN201610546127.2A 2016-07-13 2016-07-13 Rolled membrane module Expired - Fee Related CN106040005B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610546127.2A CN106040005B (en) 2016-07-13 2016-07-13 Rolled membrane module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610546127.2A CN106040005B (en) 2016-07-13 2016-07-13 Rolled membrane module

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CN106040005A true CN106040005A (en) 2016-10-26
CN106040005B CN106040005B (en) 2018-03-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110002530A (en) * 2019-05-06 2019-07-12 中国科学院生态环境研究中心 Film absorbent module, renewable membrane adsorptive reactor, liquid handling device and method
CN113456914A (en) * 2021-07-06 2021-10-01 广州市恩德氏医疗制品实业有限公司 Flat-plate rolling type dialyzer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4624760A (en) * 1984-06-21 1986-11-25 United Kingdom Atomic Energy Authority Filter cleaning
CN1045232A (en) * 1989-01-25 1990-09-12 艾尔坎国际有限公司 Filter cleaning
JPH0398621A (en) * 1989-09-08 1991-04-24 Shinko Pantec Co Ltd Electric film filter device and its operation
JPH10165772A (en) * 1996-12-05 1998-06-23 Nitto Denko Corp Reverse osmosis membrane module and liquid separation method
JPH11216343A (en) * 1998-02-02 1999-08-10 Toshiba Plant Kensetsu Co Ltd Drainage treatment device
CN101415646A (en) * 2006-03-31 2009-04-22 三井造船株式会社 Method for treating ballast water by membrane usin membrane module, and membrane treatment apparatus
CN101721915A (en) * 2008-10-28 2010-06-09 财团法人工业技术研究院 Method and apparatus for cleaning thin film
CN102781558A (en) * 2009-11-25 2012-11-14 悉尼大学 Membrane and membrane separation system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4624760A (en) * 1984-06-21 1986-11-25 United Kingdom Atomic Energy Authority Filter cleaning
CN1045232A (en) * 1989-01-25 1990-09-12 艾尔坎国际有限公司 Filter cleaning
JPH0398621A (en) * 1989-09-08 1991-04-24 Shinko Pantec Co Ltd Electric film filter device and its operation
JPH10165772A (en) * 1996-12-05 1998-06-23 Nitto Denko Corp Reverse osmosis membrane module and liquid separation method
JPH11216343A (en) * 1998-02-02 1999-08-10 Toshiba Plant Kensetsu Co Ltd Drainage treatment device
CN101415646A (en) * 2006-03-31 2009-04-22 三井造船株式会社 Method for treating ballast water by membrane usin membrane module, and membrane treatment apparatus
CN101721915A (en) * 2008-10-28 2010-06-09 财团法人工业技术研究院 Method and apparatus for cleaning thin film
CN102781558A (en) * 2009-11-25 2012-11-14 悉尼大学 Membrane and membrane separation system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110002530A (en) * 2019-05-06 2019-07-12 中国科学院生态环境研究中心 Film absorbent module, renewable membrane adsorptive reactor, liquid handling device and method
CN113456914A (en) * 2021-07-06 2021-10-01 广州市恩德氏医疗制品实业有限公司 Flat-plate rolling type dialyzer
CN113456914B (en) * 2021-07-06 2023-11-07 广州市恩德氏医疗制品实业有限公司 Flat plate winding type dialyzer

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