CN104888607B - Flat-plat membrane module and casting method thereof - Google Patents
Flat-plat membrane module and casting method thereof Download PDFInfo
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- CN104888607B CN104888607B CN201510324516.6A CN201510324516A CN104888607B CN 104888607 B CN104888607 B CN 104888607B CN 201510324516 A CN201510324516 A CN 201510324516A CN 104888607 B CN104888607 B CN 104888607B
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Abstract
The invention relates to the technical field of wastewater treatment, in particular to a casting method of a flat-plate membrane module. The casting method is particularly a process for fixing two ends of membrane yarns of a hollow-fiber membrane and the membrane shell of a flat-plate membrane in a casting manner. A rotatable inner bracket serves as a support, mechanism pieces are used for fixing membrane yarn tows in a divisional manner, and the hollow-fiber membrane yarns are subjected to rough handling by a flexible glue; the glue insertion process is carried out after the flexible glue is cured, and a hard glue is subjected to preliminary treatment to speed up curing; the flexible glue is added after the hard glue is cured; after the two-end casting is finished, the membrane module is cut to complete casting of the flat-plate membrane module. The casting method not only improves the working efficiency but also solves the problems that the flowing uniformity of the flexible glue, the fatigue resistance of the root parts of the membrane yarns, and the adhesion between the membrane yarns and the flexible glue are influenced by yarn climbing of the hard glue, and can be applied to obtain the high-performance flat-plate membrane module.
Description
Technical field
The present invention relates to technical field of sewage, and in particular to a kind of curtain type film assembly and its casting method.
Background technology
China is the country of a serious water shortage, and water resource of per capita is only the 1/4 of world's per capita ownership.Current China
The regeneration rate of trade effluent is only 6%, and well below developed country's level, the reclamation rate of municipal wastewater is lower.Membrane technology is made
For the interdisciplinary new technique that the sixties in last century grow up, the material after its energy-efficient, environment friendly and pollution-free, filtration can be straight
Take back with etc. good characteristics so as at home and abroad every field obtains extensive popularization and application.
In the application for processing sewage, often membrane technology is combined with microbial fermentation technology, form a kind of new, height
The sewage disposal technology of effect, referred to as membrane bioreactor (MBR).The hybrid technology has at home and abroad obtained very high concern
Degree, and launch the gesture for developing rapidly.In MBR applications, being achieved in that for membrane technology be immersed in liquid with membrane module, by pipe
Road connects and self prime pump is will transmit through in the form of material extraction.The membrane module is generally divided into two classes, immersion curtain type membrane
Component and immersion column-type film components.In use, curtain type film assembly is because being realized online clearly by installing aerating system
Wash, and the mode of offline cleaning, deposition of the polluter on film surface is reduced, the service life of film is improved and extensively should
With.
In actual applications, the deposition and on-line cleaning of sludge and offline cleaning can all cause the film silk motion of membrane module to add
It is acute.Under aeration over a long time and washing and cleaning operation, the fatigue resistance of film silk is gradually reduced, and finally results in fracture of wire.The end of membrane module
At portion, i.e. ebonite and flexible glue embedding, fracture of wire phenomenon is most also easy to produce, affects membrane module performance, severe patient to affect the stability of MBR.
The content of the invention
(1) technical problem to be solved
It is an object of the invention to solving ebonite present in current curtain type membrane hollow fiber film assembly casting cycle climbs silk
Cause what flexible glue declined to the protective value of film silk, and ebonite climbs that a degree is too high, flexible glue enters glue and trickles uneven problem, so as to
Increase the fatigue resistance and film silk of film silk root and the cementability of glue.
(2) technical scheme
For achieving the above object, the present invention provides a kind of casting method of curtain type film assembly, and the method comprises the steps：
(1) hollow fiber film thread tow is hung on the support of pouring device；
(2) the film silk tow, cutting film silk plug-hole are tied up；
(3) width apart from uniform application polyurethane glue at film silk bottom 2-4cm, is being smeared for 1-2cm, air-drying：
(4) curtain putamina is inserted in the groove of base of the pouring device, ebonite is poured in the curtain putamina；
(5) carried out inserting adhesive process with film silk, it is 2-4cm to insert glue depth；
(6) after ebonite solidification, flexible glue is added to coat the polyurethane glue, the cladding is to be located from ebonite
Cladding 2-3cm of the face along membrane fiber length direction；
(7) after flexible glue solidification, with one end for casting upwards, the other end downwards, repeat step（2）-（6）It is right
The component other end is cast；After the completion of casting, cutting technique is carried out to hollow fiber film assembly, complete pouring for curtain type film assembly
Casting.
Further, the support of pouring device described in step (1) includes support arm and rotatable inner support, described to revolve
Turn inner support be with middle-end as fulcrum, upper and lower side can 360 ° rotation stainless steel stents, and upper and lower side be equipped with for positioning
Latch, upper end also have multiple hooks for hanging the hollow fiber film thread tow.
Method of the present invention, before the step (3), also includes carrying out subregion to film silk, and adopts mechanism member
The step of stepping up the film silk of subregion, two mechanism members of each subregion, the polyurethane glue are applied in the middle of two mechanism members.
Film silk gluing is conducive to using mechanism member, it is also possible in avoiding inserting adhesive process, the rambling phenomenon of film silk occur.
Wherein, the mechanism member is condensing tube tongs；The condensing tube tongs has hinge, the other end perpendicular to one end on the direction of film silk
Can freely openable；The side of the condensing tube tongs is provided with the vertical latch closure for being available for positioning that rod is passed through, and the quantity of clasp is 1-2.
The positioning being provided with beneficial to condensing tube tongs of above-mentioned vertical latch closure, positioning rod herein can adopt various stick-like structures,
Such as thin iron rod etc., disclosure satisfy that and be inserted through vertical latch closure, realize positioning.
Two wall of inside that condensing tube tongs of the present invention is contacted with film silk is provided with high-foaming material, wherein the high foaming material
Material preferably selects polyethylene foam occurred frequently, ethene-vinyl acetate expanded material or polyurethane foam material.Such material suppleness
Height, is difficult to injure film silk.
Method of the present invention, preferred steps（2）Film silk tow is divided into into 2-8 area after cleaved film silk and plug-hole,
Each subregion clamps film silk using two mechanism members, with positioning rod is through the vertical latch closure in mechanism member and provokes after all film silks
The fixation positioning rod, before spreading glue, rotates 90 ° of the rotatable inner support, smears described poly- after latch fixing-stable
Urethane glue；It is preferred that in step（4）After end, rotating the rotatable inner support makes which maintain 20-35 ° between support arm, excellent
Positioning rod is released after selecting 25 °, it is artificial to hold up subregion film silk, rotate support arm vertical direction and latch is fixed, after removing mechanism part
Execution step（5）.
Method of the present invention, groove described in step (3) scribbled oily matter before insertion curtain putamina, excellent
The oily matter is selected from butter or vaseline.
Further, before described in step (3), ebonite is poured in the curtain putamina, first by the ebonite 60 DEG C-
0.5-1 hours are heated at 70 DEG C, and is cooled to 30 DEG C -40 DEG C.Jing after the process, ebonite hardening time is reduced, teeming speed is poured in raising
Rate.
Further, the material of hollow fiber film thread described in step (1) be Kynoar (PVDF), polysulfones (PS),
Any one in polyether sulfone (PES) or polyfluorinated ethylene (PTFE).
Further, hollow fiber film thread length described in step (1) is 0.5-2.5 rice.
Further, the quantity of hollow fiber film thread described in step (1) is 100-6000 roots.
Further, the poly- ammonia of fast setting of primary solidification by polyurethane glue described in step (2) is 30-60 minutes
Ester gum water.
Further, described in step (3), the length and width of groove is consistent with the curtain putamina, highly with the curtain
The 1/2 of formula putamina is highly consistent.
Invention also provides the curtain type film assembly that said method is prepared, the curtain type film assembly has more preferable
Application performance and longer service life.
(3) beneficial effect
The inventive method has the advantage that：Film silk is carried out after subregion using homemade condensing tube tongs, it is preliminary using flexible glue
Hollow fiber film thread is processed, makes between film silk and film silk, to be full of flexible glue, it is to avoid it is too high that ebonite climbs silk.Film silk after subregion fixation,
Be not in rambling phenomenon in slotting adhesive process, keep component facade graceful, reduce the artificial process for arranging film silk.Inserting
In adhesive process, ebonite after heating, accelerate by curing rate, and trickling performance is improved, and the time required to reducing solidification, improves work effect
Rate.Flexible glue is added, flexible glue only need to trickle in the by stages of film silk, and trickling uniformity increases, more preferable protecting film silk root
Portion.
In sum, the inventive method had both improved work efficiency, can overcome again and climb silk because of ebonite, affected flexible glue trickling uniform
The problems such as cementability of property, film silk root fatigue resistance and film silk and flexible glue, adopting said method is obtained high performance curtain type membrane
Component.
Description of the drawings
The single subregion film silks of Fig. 1 apply daub sketch.
Fig. 2 curtain type film assemblies casting support sketch.
Wherein, 1:Vertical latch closure；2:Hinge；3:Thin iron rod；4:Hollow fiber film thread；5:Condensing tube tongs；6:Latch；7:360°
Rotatable inner support；8:Support arm；9:Hook；10:Curtain putamina；11:Stainless steel base；12:Regional area（Figure is shown in amplification
1）.
Specific embodiment
Embodiments of the present invention are described in further detail below in conjunction with accompanying drawing 1,2 and embodiment.Following examples
For illustrating the present invention, but can not be used for limiting the scope of the present invention.
Embodiment 1：The casting of curtain type film assembly
The material and specification of curtain type film assembly is as follows：
Curtain type film assembly entire length：0.5m；
Hollow-fibre membrane silk：PVDF materials, quantity 100；
Ebonite：Epoxy resin, flexible glue：Polyurethane.
Assembly property：Film silk fracture of root number≤99.5%.
Casting cycle is as follows：
(1) hang film silk and subregion is carried out to film silk；100 hollow fiber film threads (4) are suspended on into rotatable inner support
(7) on 2 hooks (9)；
(2) the long hollow fiber film threads of 0.5m are measured, with nylon cable tie after same position ties up film silk tow, cutting film silk
And plug-hole；
(3) subregion is carried out using condensing tube tongs (5) to film silk, 2 groups of number of partitions adopts two condensing tube tongses per component area, from
Each apart from film silk bottom 25mm and 60mm by pressing from both sides, the perpendicular rings button bit of condensing tube tongs is in the same side；
(4) using thin iron rod (3) (diameter is about 5mm) through vertical latch closure (1), after provoking all film silks, the thin ferrum of fixation
Rod (3)；（Referring to Fig. 1）
(5), after runing rest (7) rotates 90 °, work as latch (6) fixed stably；
(6) to the film silk coating polyurethane glue in the middle of condensing tube tongs (5), gently shake, it is ensured that every film silk speckles with poly-
Urethane glue, spreading glue width 1cm, apart from film silk bottom 20mm；
(7) wait for polyurethane adhesive water cure quietly, and curtain putamina (10) is inserted in the groove of cast frame base (11), it is recessed
Coating butter in groove；
(8) prepare epoxy resin ebonite, at 60 DEG C, heat 0.5h, mix homogeneously pours curtain putamina into after being cooled to 40 DEG C
In；
(9) after polyurethane glue 30min solidifications, runing rest is rotated, make 25 ° to be maintained between runing rest and casting support；
(10) it is after releasing the fixation to thin iron rod (3), artificial to hold up subregion film silk, casting support vertical direction is rotated, and
Use Fixed latches；
(11) the subregion film silk on thin iron rod (3) is progressively removed, condensing tube tongs (5) is removed, is carried out inserting adhesive process, is inserted glue depth
Spend for 2cm；
(12) after ebonite solidification, polyurethane flexible glue is added to coat the polyurethane glue, the cladding is from ebonite institute
Face along membrane fiber length direction cladding 2cm；
(13) after flexible glue solidification, with one end for casting upwards, the other end downwards, after repeating (3)-(10) step, centering
Hollow fiber membrane module carries out cutting technique, completes the casting of curtain type film assembly（Referring to Fig. 2）.
Embodiment 2：The casting of curtain type film assembly
The material and specification of curtain type film assembly is as follows：
Curtain type film assembly entire length：2m；
Hollow-fibre membrane silk：PTFE materials, quantity 3000；
Ebonite：Epoxy resin, flexible glue：Polyurethane.
Casting cycle is as follows：
(1) hang film silk and subregion is carried out to film silk, 3000 hollow fiber film threads (4) are suspended on into rotatable inner support
(7) on 6 hooks (9)；
(2) the long hollow fiber film threads of 2m are measured, with nylon cable tie after same position ties up film silk tow, cutting film silk is simultaneously
Plug-hole；
(3) subregion is carried out using condensing tube tongs (5) to film silk, 8 groups of number of partitions adopts two condensing tube tongses per component area, from
Each apart from film silk bottom 30mm and 60mm by pressing from both sides, the perpendicular rings button bit of condensing tube tongs is in the same side；
(4) using thin iron rod (3) (diameter is about 8mm) through vertical latch closure (1), after provoking all film silks, the thin ferrum of fixation
Rod (3)；
(5), after runing rest (7) rotates 90 °, work as latch (6) fixed stably；
(6) to the film silk coating polyurethane glue in the middle of condensing tube tongs (5), gently shake, it is ensured that every film silk speckles with poly-
Urethane glue, spreading glue width 2cm, apart from film silk bottom 40mm；
(7) wait for polyurethane adhesive water cure quietly, and curtain putamina (10) is inserted in the groove of cast frame base (11), it is recessed
Coating butter in groove；
(8) prepare epoxy resin ebonite, at 65 DEG C, heat 1h, mix homogeneously is poured into after being cooled to 35 DEG C in curtain putamina；
(9) after polyurethane glue 60min solidifications, runing rest is rotated, make 25 ° to be maintained between runing rest and casting support；
(10) it is after releasing the fixation to thin iron rod (3), artificial to hold up subregion film silk, casting support vertical direction is rotated, and
Use Fixed latches；
(11) the subregion film silk on thin iron rod (3) is progressively removed, condensing tube tongs (5) is removed, is carried out inserting adhesive process, is inserted glue depth
For 4cm；
(12) after ebonite solidification, polyurethane flexible glue is added to coat the polyurethane glue, the cladding is from ebonite institute
Face along membrane fiber length direction cladding 2cm；
(13) after flexible glue solidification, with one end for casting upwards, the other end downwards, after repeating (3)-(10) step, centering
Hollow fiber membrane module carries out cutting technique, completes the casting of curtain type film assembly.
Embodiment 3：The casting of curtain type film assembly
The material and specification of curtain type film assembly is as follows：
Curtain type film assembly entire length：2.5m
Hollow-fibre membrane silk：PVDF materials, quantity 6000
Ebonite：Epoxy resin, flexible glue：Polyurethane.
Casting cycle is as follows：
(1) hang film silk and subregion is carried out to film silk, 6000 hollow fiber film threads (4) are suspended in rotatable and are propped up
On 8 hooks (9) of frame (7)；
(2) the long hollow fiber film threads of 2.5m are measured, with nylon cable tie after same position ties up film silk tow, cutting film silk
And plug-hole；
(3) subregion is carried out using condensing tube tongs (5) to film silk, 8 groups of number of partitions adopts two condensing tube tongses per component area, from
Each apart from film silk bottom 30mm and 60mm by pressing from both sides, the perpendicular rings button bit of condensing tube tongs is in the same side；
(4) it is using thin iron rod (3) (diameter is about 10mm) through vertical latch closure (1), after provoking all film silks, fixed thin
Iron rod (3)；
(5), after runing rest (7) rotates 90 °, work as latch (6) fixed stably；
(6) to the film silk coating polyurethane glue in the middle of condensing tube tongs (5), gently shake, it is ensured that every film silk speckles with poly-
Urethane glue, spreading glue width 2cm, apart from film silk bottom 40mm；
(7) wait for polyurethane adhesive water cure quietly, and curtain putamina (10) is inserted in the groove of cast frame base (11), it is recessed
Coating butter in groove；
(8) prepare epoxy resin ebonite, at 70 DEG C, heat 1h, mix homogeneously is poured into after being cooled to 40 DEG C in curtain putamina；
(9) after polyurethane glue 60min solidifications, runing rest is rotated, make 25 ° to be maintained between runing rest and casting support；
(10) it is after releasing the fixation to thin iron rod (3), artificial to hold up subregion film silk, casting support vertical direction is rotated, and
Fixed with latch；
(11) the subregion film silk on thin iron rod (3) is progressively removed, condensing tube tongs (5) is removed, is carried out inserting adhesive process, is inserted glue depth
For 4cm；
(12) after ebonite solidification, polyurethane flexible glue is added to coat the polyurethane glue, the cladding is from ebonite institute
Face along membrane fiber length direction cladding 2cm；
(13) after flexible glue solidification, with one end for casting upwards, the other end downwards, after repeating (3)-(10) step, centering
Hollow fiber membrane module carries out cutting technique, completes the casting of curtain type film assembly.
Although the present invention is described in detail above to have used general explanation and specific embodiment, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art；Therefore,
These modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (19)
1. a kind of casting method of curtain type film assembly, it is characterised in that comprise the following steps：
(1) hollow fiber film thread tow is hung on the support of pouring device；
(2) the film silk tow, cutting film silk plug-hole are tied up；
(3) width apart from uniform application polyurethane glue at film silk bottom 2-4cm, is being smeared for 1-2cm, air-drying：
(4) curtain putamina is inserted in the groove of base of the pouring device, ebonite is poured in the curtain putamina；
(5) carried out inserting adhesive process with film silk, it is 2-4cm to insert glue depth；
(6) after ebonite solidification, flexible glue is added to coat the polyurethane glue, the cladding is from ebonite place face edge
Cladding 2-3cm in membrane fiber length direction；
(7) after flexible glue solidification, with one end for casting upwards, the other end downwards, repeat step（2）-（6）To component
The other end is cast；After the completion of casting, cutting technique is carried out to hollow fiber film assembly, complete the casting of curtain type film assembly；
Wherein, before the step (3), also include carrying out film silk subregion, and step up the film silk of subregion using mechanism member
Step, two mechanism members of each subregion, the polyurethane glue are applied in the middle of two mechanism members；The mechanism member is for freely
Folder；The condensing tube tongs has hinge perpendicular to one end on the direction of film silk, and the other end can freely openable；The side of the condensing tube tongs sets
There is the vertical latch closure for being available for positioning that rod is passed through, the quantity of clasp is 1-2；Two wall of inside that the condensing tube tongs is contacted with film silk
It is provided with high-foaming material.
2. method according to claim 1, it is characterised in that the support of pouring device described in step (1) includes outer
Frame and rotatable inner support, the rotatable inner support be with middle-end as fulcrum, upper and lower side can 360 ° rotation stainless steel stents,
And upper and lower side is equipped with the latch for positioning, there be multiple hooks for hanging the hollow fiber film thread tow upper end.
3. method according to claim 1, it is characterised in that high-foaming material selection polyethylene foam occurred frequently, second
Alkene-vinyl acetate expanded material or polyurethane foam material.
4. method according to claim 2, it is characterised in that step（2）By film silk tow after cleaved film silk and plug-hole
It is divided into 2-8 area, each subregion clamps film silk using two mechanism members, with positioning rod is through the vertical latch closure in mechanism member and chooses
The positioning rod is fixed after playing all film silks, before spreading glue, 90 ° of the rotatable inner support, latch fixing-stable is rotated
After smear the polyurethane glue；In step（4）After end, rotating the rotatable inner support makes which maintain between support arm
Positioning rod is released after 20-35 °, it is artificial to hold up subregion film silk, rotate support arm vertical direction and latch is fixed, after removing mechanism part
Execution step（5）.
5. method according to claim 4, it is characterised in that in step（4）After end, the rotatable inner support is rotated
Make which that 25 ° are maintained between support arm.
6. method according to claim 1, it is characterised in that groove described in step (3) before insertion curtain putamina,
Scribble oily matter.
7. method according to claim 6, it is characterised in that the oily matter selects butter or vaseline.
8. method according to claim 2, it is characterised in that groove described in step (3) before insertion curtain putamina,
Scribble oily matter.
9. method according to claim 8, it is characterised in that the oily matter selects butter or vaseline.
10. method according to claim 3, it is characterised in that groove described in step (3) insertion curtain putamina it
Before, scribble oily matter.
11. methods according to claim 10, it is characterised in that the oily matter selects butter or vaseline.
12. methods according to claim 4, it is characterised in that groove described in step (3) insertion curtain putamina it
Before, scribble oily matter.
13. methods according to claim 12, it is characterised in that the oily matter selects butter or vaseline.
14. methods according to claim 5, it is characterised in that groove described in step (3) insertion curtain putamina it
Before, scribble oily matter.
15. methods according to claim 14, it is characterised in that the oily matter selects butter or vaseline.
16. methods according to any one of claim 1-15, it is characterised in that ebonite described in step (4) is poured into described
Before in curtain putamina, the ebonite is first heated at 60 DEG C -70 DEG C 0.5-1 hours, and is cooled to 30 DEG C -40 DEG C.
17. methods according to any one of claim 1-15, it is characterised in that hollow fiber film thread described in step (1)
Material be Kynoar (PVDF), polysulfones (PS), polyether sulfone (PES) or polyfluorinated ethylene (PTFE) in any one.
18. methods according to claim 17, it is characterised in that the hollow fiber film thread length is 0.5-2.5 rice；Number
Measure as 100-6000 roots.
The preparation-obtained curtain type film assembly of 19. claim 1-18 any one methods.
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| CN201510324516.6A CN104888607B (en) | 2015-06-15 | 2015-06-15 | Flat-plat membrane module and casting method thereof |
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| CN106268359B (en) * | 2016-08-31 | 2019-05-21 | 天津碧水源膜材料有限公司 | A kind of RF film wire is at curtain equipment and preparation method |
| CN106621817A (en) * | 2016-10-08 | 2017-05-10 | 武汉艾科滤膜技术有限公司 | Method for preventing hollow fiber ultrafiltration membrane root from breaking |
| CN108201791A (en) * | 2017-12-30 | 2018-06-26 | 武汉艾科滤膜技术有限公司 | A kind of production method of the curtain type film assembly of one end sealing |
| CN109970175A (en) * | 2019-04-28 | 2019-07-05 | 盐城海普润膜科技有限公司 | A kind of putamina for curtain type film assembly |
| CN111495194B (en) * | 2020-04-23 | 2022-10-11 | 北创清源(北京)科技有限公司 | Repair method for root damage of membrane filaments of hollow fiber curtain type membrane component |
| CN113663523B (en) * | 2020-05-15 | 2022-11-11 | 三达膜科技（厦门）有限公司 | Preparation method of hollow fiber membrane component |
| CN113663521B (en) * | 2020-05-15 | 2022-09-27 | 三达膜科技（厦门）有限公司 | Casting method of ceramic membrane element |
| CN113731180A (en) * | 2021-08-25 | 2021-12-03 | 苏州富淼膜科技有限公司 | Hollow fiber membrane curtain type membrane assembly and packaging method thereof |
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| WO2009076911A1 (en) * | 2007-12-14 | 2009-06-25 | Beijing Ecojoy Water Technology Co., Ltd | A hollow fiber membrane module, a membrane biological reactor and a water-processing equipment use of it |
| TWI457169B (en) * | 2008-01-11 | 2014-10-21 | Sumitomo Electric Industries | Separation film element, separation film module and method for manufacturing separation film element |
| JP2009165913A (en) * | 2008-01-11 | 2009-07-30 | Sumitomo Electric Ind Ltd | Separation membrane element, separation membrane module, and manufacturing method of separation membrane element |
| CN102120351B (en) * | 2010-12-16 | 2013-02-06 | 国电龙源南京膜技术有限公司 | Casting method for membrane assembly |
| US9403121B2 (en) * | 2013-06-06 | 2016-08-02 | Idex Health & Science, Llc | Carbon nanotube composite membrane |
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