CN106040005B - Rolled membrane module - Google Patents
Rolled membrane module Download PDFInfo
- Publication number
- CN106040005B CN106040005B CN201610546127.2A CN201610546127A CN106040005B CN 106040005 B CN106040005 B CN 106040005B CN 201610546127 A CN201610546127 A CN 201610546127A CN 106040005 B CN106040005 B CN 106040005B
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- China
- Prior art keywords
- central tube
- shell
- hydrophobic cloth
- conductive contact
- electrodes
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- 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.)
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Classifications
-
- 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
- B01D63/10—Spiral-wound 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
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/22—Electrical effects
- B01D2321/223—Polarity reversal
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Once the present invention is long-acting rolled membrane module, including some wound membrane elements, central tube, shell, solves film contaminated, it is necessary to stop cleaning, is recoiled cleaning membrane component with water purification daily, the problem of periodically cleaning membrane component with sour, alkali respectively.Hydrophobic cloth（9）For the hydrophobic cloth of carbon fiber, extract a flat conductive contact out in the hydrophobic cloth of carbon fiber, all conductive contacts are named according to the number of putting in order, odd number conductive contact is connected in parallel as A electrodes, even number conductive contact is connected in parallel and passes through central tube for B electrodes, two electrodes of A, B（6）From shell（7）Extraction is connected with adjustable polarity power.
Description
Technical field：
The present invention is relevant with rolled membrane module.
Background technology：
Rolled membrane module is that existing market uses at most widest film application forms, and it is mainly characterized by loading density
Greatly, use is easy to operate.Film occasion is used most of, film is occurred in the form of rolled film.Rolled membrane module is mainly used
Flat board diaphragm, which rolls, to be formed.Include the components such as flat board diaphragm, runner spacer web, dialyzate collecting pipe, putamina.
Wound membrane element is one hydrophobic cloth of folder between two permeable membranes, and the long letter to form a rectangle is closed in three side heat seals
The flat board diaphragm of shape is sealed, the hole of unclosed opening edge face central tube, central tube is collected into through the dialyzate can of film
It is interior.Wound membrane element is formed by a flat board diaphragm and runner spacer web winding, is referred to as " single leaf ".Commercialization rolled membrane module is big
It is use " leafy " structure more.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 the flowing of runner everywhere more uniform.Leafy wound membrane element is opened flat board diaphragm is unclosed
The hole of mouth side face central tube is cohered on central tube, a runner spacer web is re-lining with, until cohering multi-disc flat board diaphragm simultaneously
Every lining multi-disc runner spacer web on central tube into spiral wound.
Wound membrane element raw water introduces from membrane component end, and the direction parallel along film surface is flowed, and what is be separated is saturating
Analysis liquid then enters hydrophobic cloth perpendicular to film surface, in this way, dialyzate and raw water form the vertically and laterally two kinds of flow directions that intersect.
Zwitterion, salinity and colloid in water are left on raw water（Concentrated water is formed step by step）In, and taken away by lateral current, if film
The water flux of element is excessive, or the rate of recovery is too high（Refer to and exceed manufactory's directive/guide regulation）, salinity and colloid are detained on the surface of the film
Possibility it is bigger.Excessive concentration can form concentration polarization, and zwitterion, salinity and colloidal solid can polluted membrane surfaces.
Wound membrane element major advantage：
1. compact-sized, effective membrane area is larger in unit volume.
2. manufacture craft is relatively easy.
3. install, operate it is more convenient.
But its shortcoming is in use, film is once contaminated, it is necessary to which stop cleaning, is recoiled clear with water purification daily
Membrane component is washed, periodically to clean membrane component with acid, alkali respectively.Traditional cleaning way damages to caused by membrane component, adds
The discharge of waste water, the service life of membrane component is reduced, improve the operating cost of device.
The content of the invention：
It is an object of the invention to provide a kind of membrane module, energy self-cleaning, membrane component use the longevity while being filtered
Life length, the high rolled membrane module of the operational efficiency of device.
What the present invention was realized in：
The present invention includes wound membrane element 5, central tube 6, shell 7, wound membrane element 5 be press from both sides between two permeable membranes 10 to
Few first hydrophobic cloth 9, three side heat seals close the flat board diaphragm for the long envelope shape to form a rectangle, flat board diaphragm are not sealed
The hole for closing opening edge face central tube is cohered on central tube, and lining one opens runner spacer web 11 between two wound membrane elements 5, more
Piece flat board diaphragm and runner spacer web 11 form helical coil on central tube, and helical coil is located in shell 7, central tube 6
In housing axis, its upper and lower end is connected with sealing flange 4, and permeable pad 8 is between helical coil and sealing flange 4, shell
Intake antrum between 7 lower ends and sealing flange 4 has original water inlet 1, the water chamber between the upper end of shell 7 and sealing flange 4
There is concentration water out 3 to connect permeable pad 8, pure water inlet 2 is located at external part on central tube 6, and the first hydrophobic cloth 9 is that carbon fiber is hydrophobic
Cloth, a flat conductive contact is extracted out in the hydrophobic cloth of carbon fiber, by the conductive contact of the first all hydrophobic cloth 9 according to row
Row serial number is named, and odd number conductive contact is connected in parallel as A electrodes, even number conductive contact is connected in parallel as B
Electrode, two electrodes of A, B are drawn from shell 7 by central tube 6 and are connected with adjustable polarity power.
Including some wound membrane elements 5, central tube 6, shell 7, wound membrane element 5 is one, folder between two permeable membranes 10
The flat board diaphragm for the long envelope shape to form a rectangle is closed in first hydrophobic cloth 9, three side heat seals, by the unclosed opening of flat board diaphragm
The hole of side face central tube is cohered on central tube, and multi-disc flat board diaphragm and runner spacer web 11 form spiral shell on central tube
Circumvolution, helical coil are located in shell 7, and central tube 6 is located 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 the lower end of shell 7 and sealing flange 4 has original water inlet 1, outside
Water chamber between the upper end of shell 7 and sealing flange 4 has concentration water out 3 to connect permeable pad 8, and pure water inlet 2 is located at central tube 6
Upper external part, lining two opens runner spacer web 11 between two wound membrane elements 5, and one second, the folder of two runner spacer webs 11 is dredged
Water cloth 9, the second hydrophobic cloth are the hydrophobic cloth of carbon fiber, a flat conductive contact are extracted out in the hydrophobic cloth of carbon fiber, by second
All conductive contacts of hydrophobic cloth 9 are named according to the number of putting in order, and odd number conductive contact is connected in parallel as A electrodes, general
Even number conductive contact is connected in parallel is drawn and adjustable polarity electricity for B electrodes, two electrodes of A, B by central tube 6 from shell 7
Source connects.
Extract flat thickness 0.2mm, width 8mm, a length 36mm conductive contact in hydrophobic cloth out.
The present invention makes the material of the hydrophobic cloth 9 in flat board diaphragm into same specification, the electric conductivity with size by nylon material
The good hydrophobic cloth of carbon fiber of energy, two electrodes of A, B have been drawn in symmetrical two ports respectively.Adjustable polarity power is connected,
Electric field is formed in wound membrane element.Anion is deposited on part diaphragm, cation is deposited on another part diaphragm.By certain week
Phase converting power source polarity, because the gravitation and repulsion of electric field act on, the anions and canons on diaphragm start to exchange, so as to depart from film
Piece, diaphragm is carried over the flowing of raw water.
The polarity of conversion electric field has just reached the function of cleaning diaphragm, makes the membrane element of the original cleaning that recoiled daily with water purification
Part and the membrane component that periodically cleaned respectively with acid, alkali almost no longer clean.Due to without using excessive pressure and excessive temperature
Solution carries out positive and negative cleaning to diaphragm, therefore the life-span of element is greatly prolonged.Improve the operational efficiency of device.
Brief description of the drawings：
Fig. 1 is structure chart of the present invention.
Fig. 2 is Fig. 1 partial enlarged drawing.
Embodiment：
Embodiment 1：
The present invention includes wound membrane element 5, central tube 6, shell 7, and wound membrane element 5 presss from both sides one between two permeable membranes 10
The flat board diaphragm for the long envelope shape to form a rectangle is closed in the first hydrophobic cloth 9, three side heat seals, is opened flat board diaphragm is unclosed
The hole of mouth side face central tube is cohered on central tube, and lining one opens runner spacer web 11 between two wound membrane elements 5, and multi-disc is put down
Plate diaphragm and runner spacer web 11 form helical coil on central tube, and helical coil is located in shell 7, and central tube 6 is positioned at outer
Columella line, its upper and lower end are connected with sealing flange 4, and permeable pad 8 is between helical coil and sealing flange 4, under shell 7
Intake antrum between end and sealing flange 4 has original water inlet 1, and the water chamber between the upper end of shell 7 and sealing flange 4 has dense
Water outlet 3 connects permeable pad 8, and pure water inlet 2 is located at external part on central tube 6, and the first hydrophobic cloth 9 is the hydrophobic cloth of carbon fiber,
Extract a flat conductive contact out in the hydrophobic cloth of carbon fiber, the first all hydrophobic conductive contacts of cloth 9 is suitable according to arranging
Sequence number is named, and odd number conductive contact is connected in parallel as A electrodes, and even number conductive contact is connected in parallel as B electrodes,
A, two electrodes of B are drawn from shell 7 by central tube 6 and are connected with adjustable polarity power.
Extract flat thickness 0.2mm, width 8mm, a length 36mm conductive contact in hydrophobic cloth out.
Embodiment 2：
Including some wound membrane elements 5, central tube 6, shell 7, wound membrane element 5 is one, folder between two permeable membranes 10
The flat board diaphragm for the long envelope shape to form a rectangle is closed in first hydrophobic cloth 9, three side heat seals, by the unclosed opening of flat board diaphragm
The hole of side face central tube is cohered on central tube, a lining at least runner spacer web 11, multi-disc between two wound membrane elements 5
Flat board diaphragm and runner spacer web 11 form helical coil on central tube, and helical coil is located in shell 7, and central tube 6 is located at
Housing axis, its upper and lower end are connected with sealing flange 4, and permeable pad 8 is between helical coil and sealing flange 4, shell 7
Intake antrum between lower end and sealing flange 4 has original water inlet 1, and the water chamber between the upper end of shell 7 and sealing flange 4 has
Concentration water out 3 connects permeable pad 8, and pure water inlet 2 is located at external part on central tube 6, and lining two is opened between two wound membrane elements 5
Runner spacer web 11, one the second hydrophobic cloth 9 of folder of two runner spacer webs 11, the second hydrophobic cloth is the hydrophobic cloth of carbon fiber,
A flat conductive contact is extracted in the hydrophobic cloth of carbon fiber out, by all conductive contacts of the second hydrophobic cloth 9 according to putting in order
Number name, odd number conductive contact is connected in parallel as A electrodes, and even number conductive contact is connected in parallel as B electrodes, A,
Two electrodes of B are drawn from shell 7 by central tube 6 and are connected with adjustable polarity power.
Experimental example：
Periphery and permeable pad 8 of the raw water from original water inlet 1 by ring flange 4, are entered in stainless steel putamina 7,
Under pressure effect, raw water enters hydrophobic cloth 9 by permeable membrane 10, turns into water purification into collector pipe 6 under pressure, water purification goes out
The outflow of mouth 2 is collected；A part of raw water is along film post through periphery of the permeable pad 8 along ring flange 4 and permeable pad 8 through going out condensed water
Mouth 3 discharges condensed waters.
A, B is electrode, when film post works, the direct current on A, B electrode, a polarity is converted per 5-10 minutes, A just, B
It is negative, be changed into after 5-10 minutes A is negative, B just, so every 5-10 minute circulation primaries, test voltage 12V-36V.
It is explained below using the rolled film post of two kinds of different areas of NF as experimental example：
Experimental example 1：
Rolled membrane module structure is the structure of embodiment 1.
The NF film post similar to Fig. 1 structures is rolled into flat board diaphragm, the area of film is 1 ㎡, when temperature is 20 DEG C~28
DEG C, make raw water using running water, by flux be that 4L/min is pumped into raw water to NF film posts with the water pump that pressure is 1.6MPa, be not added with
On the premise of reversal power supply, can stream time at 3 days or so, over time, water yield reduces per hour
2% or so, to after 72 hours, film is blocked, and can not substantially be then exhausted from water purification, and 4L/min or so is arrived in wastewater flow rate increasing.
As the power supply that adjustable polarity is added on A, B electrode, voltage V2, electric current 0.3A.Converted within every 8 minutes when polarity
An at time, the water purification output quantities of NF film posts is 3.4L/min or so, and wastewater effluent amount is 0.6L/min or so, ensuing 30 days
Interior, the output quantity of water purification successively decreases 1% for every 3 days, and waste water output quantity is incremented by 1% for every 3 days, after continuous work 60 days, rolling NF film posts
It can still work on.
Experimental example 2：
Rolled membrane module structure is the structure of embodiment 2.
The NF film post similar to Fig. 1 structures has been rolled into flat board diaphragm, membrane area is 9 ㎡, when temperature be 20 DEG C~28 DEG C,
Make raw water using running water, by flux be that 60L/min is pumped into raw water to film post with the water pump that pressure is 1.6MPa, in not additive polarity
On the premise of converting power source, can stream time at 3 days or so, over time, it is left that water yield reduces 2% per hour
The right side, to after 72 hours, film is blocked, and can not substantially be then exhausted from water purification, and wastewater flow rate increases to 60L/min or so.
As the power supply that adjustable polarity is added on A, B electrode, voltage V1, electric current 3A.When polarity conversion one in every 8 minutes
When secondary, water purification average output is 52 L/min, and waste water output quantity is 8 L/min, over time, every 3 days water purification
Output quantity will successively decrease 1% or so, and waste water output quantity will be incremented by 1% or so for every 3 days, so after continuous work 60 days, rolling
Film post can still work on.
Above-mentioned experiment is done with tri- kinds of flat board diaphragms of RO, UF, MF, under suitable DC voltage, regular reverse, is had
The same effect for extending the cleaning frequency.
Claims (3)
1. rolled membrane module, including some wound membrane elements（5）, central tube（6）, shell（7）, wound membrane element is two infiltrations
Film（10）Between press from both sides a first hydrophobic cloth（9）, three side heat seals close the flat board diaphragm for the long envelope shape to form a rectangle, will
The hole of the unclosed opening edge face central tube of flat board diaphragm is cohered on central tube, lining at least one between two wound membrane elements
Runner spacer web（11）, multi-disc flat board diaphragm and runner spacer web form helical coil on central tube, and helical coil is positioned at outer
In shell, central tube is located at housing axis, its upper and lower end and sealing flange（4）Connection, permeable pad（8）Positioned at helical coil with it is close
Seal between ring flange, the intake antrum between shell lower end and sealing flange has original water inlet（1）, shell upper end and sealing flange
Water chamber between disk has concentration water out（3）Connect permeable pad, pure water inlet（2）The external part on central tube, its feature
It is the first hydrophobic cloth（9）For the hydrophobic cloth of carbon fiber, a flat conductive contact is extracted out in the hydrophobic cloth of carbon fiber, will be all
The conductive contact of the first hydrophobic cloth named according to the number of putting in order, odd number conductive contact is connected in parallel as A electrodes, will
Even number conductive contact is connected in parallel is drawn and adjustable polarity power for B electrodes, two electrodes of A, B by central tube from shell
Connection.
2. rolled membrane module, it is characterised in that including some wound membrane elements（5）, central tube（6）, shell（7）, wound membrane element
For two permeable membranes（10）Between press from both sides a first hydrophobic cloth（9）, three side heat seals close the long envelope shape to form a rectangle
Flat board diaphragm, the hole of the unclosed opening edge face central tube of flat board diaphragm is cohered on central tube, between two wound membrane elements
A lining at least runner spacer web（11）, multi-disc flat board diaphragm and runner spacer web form helical coil on central tube,
Helical coil is located in shell, and central tube is located at housing axis, its upper and lower end and sealing flange（4）Connection, permeable pad（8）Position
Between helical coil and sealing flange, the intake antrum between shell lower end and sealing flange has original water inlet（1）, on shell
Water chamber between end and sealing flange has concentration water out（3）Connect permeable pad, pure water inlet（2）Stretched on central tube
Go out end, it is characterised in that two wound membrane elements（5）Between lining two open runner spacer web（11）, press from both sides between two runner spacer webs
One the second hydrophobic cloth, the second hydrophobic cloth are the hydrophobic cloth of carbon fiber, extract a flat conduction out in the hydrophobic cloth of carbon fiber and connect
Head, all conductive contacts of the second hydrophobic cloth are named according to the number of putting in order, odd number conductive contact is connected in parallel as A
Electrode, even number conductive contact is connected in parallel as B electrodes, two electrodes of A, B by central tube from shell draw with it is adjustable
Polarity power connects.
3. rolled membrane module according to claim 1 or 2, it is characterised in that it is one flat to extract conductive contact in hydrophobic cloth out
Flat thickness 0.2mm, width 8mm, length 36mm conductive contact.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106040005A CN106040005A (en) | 2016-10-26 |
| CN106040005B true CN106040005B (en) | 2018-03-27 |
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ID=57185343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610546127.2A Expired - Fee Related CN106040005B (en) | 2016-07-13 | 2016-07-13 | Rolled membrane module |
Country Status (1)
| Country | Link |
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| CN (1) | CN106040005B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002530B (en) * | 2019-05-06 | 2021-04-02 | 中国科学院生态环境研究中心 | Membrane adsorption assembly, renewable membrane adsorption reactor, liquid treatment device and method |
| 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 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8415887D0 (en) * | 1984-06-21 | 1984-07-25 | Atomic Energy Authority Uk | Membrane cleaning |
| GB8901581D0 (en) * | 1989-01-25 | 1989-03-15 | Alcan Int Ltd | 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 process |
| JPH11216343A (en) * | 1998-02-02 | 1999-08-10 | Toshiba Plant Kensetsu Co Ltd | Waste liquid treating device |
| JP5093835B2 (en) * | 2006-03-31 | 2012-12-12 | 三井造船株式会社 | Ballast water membrane treatment method and membrane treatment apparatus using membrane module |
| CN101721915B (en) * | 2008-10-28 | 2012-07-25 | 财团法人工业技术研究院 | Method and device for cleaning membrane |
| CN102781558B (en) * | 2009-11-25 | 2015-06-24 | 悉尼大学 | Membrane and membrane separation system |
-
2016
- 2016-07-13 CN CN201610546127.2A patent/CN106040005B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN106040005A (en) | 2016-10-26 |
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