CN115121122A - Regularly arranged hollow fiber curtain type membrane assembly and preparation method thereof - Google Patents
Regularly arranged hollow fiber curtain type membrane assembly and preparation method thereof Download PDFInfo
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- CN115121122A CN115121122A CN202210734845.8A CN202210734845A CN115121122A CN 115121122 A CN115121122 A CN 115121122A CN 202210734845 A CN202210734845 A CN 202210734845A CN 115121122 A CN115121122 A CN 115121122A
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- 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
- B01D63/02—Hollow fibre modules
- B01D63/021—Manufacturing thereof
- B01D63/022—Encapsulating hollow fibres
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention provides a hollow fiber curtain type membrane assembly arranged orderly and a preparation method thereof, wherein the membrane assembly comprises a plurality of membrane curtains and two packaging fixing pieces, the membrane curtains are formed by stacking a plurality of membrane sheets, the membrane sheets are formed by arranging a plurality of hollow fiber membrane filaments along the same direction and fixing the membrane sheets through hot melt adhesive, the membrane curtains are arranged along the same direction, two ends of the membrane curtains are respectively packaged and fixed in the two packaging fixing pieces, membrane curtain slots are arranged on the packaging fixing pieces, packaging adhesive layers for packaging and fixing the membrane curtains are arranged in the membrane curtain slots of the packaging fixing pieces, packaging medium discharge channels for discharging packaging media are arranged on the packaging fixing pieces, and the packaging medium discharge channels are communicated with the outside and the bottoms of the membrane curtain slots. Compared with the traditional process, the invention greatly simplifies the manufacturing process of the curtain type membrane component, improves the production efficiency, saves the consumption of membrane wires and glue, reduces the production cost, can improve the effective filling area, prevents the premature wear of the root parts of the membrane wires, and greatly prolongs the service life of the membrane component.
Description
Technical Field
The invention belongs to the technical field of membrane bioreactors, and particularly relates to a hollow fiber curtain type membrane component which is orderly arranged and a preparation method thereof.
Background
A Membrane Bioreactor (MBR) is a novel water treatment technology that organically combines a membrane separation technology and a biological treatment technology, and is widely applied to sewage treatment in the fields of municipal administration, petrifaction, electric power, steel and the like due to the characteristics of high treatment efficiency, good effluent quality, small occupied area, easiness in realization of automatic control, simplicity in operation management and the like. The core of MBR is based on submerged high-strength membrane module, wherein hollow fiber curtain type membrane module is most widely applied in large-scale water treatment project due to its unique advantages of large specific surface area, high packing density, simple production process, capability of backwashing and the like.
At present, the conventional preparation method of the hollow fiber curtain type membrane assembly is to place membrane filaments bundled into a bundle on a tool fixture, cut off redundant membrane filaments after fixing, seal the ends of the membrane filaments by adopting soft glue, and then carry out glue filling and packaging, wherein the packaging procedures are more, and the steps comprise pouring hard glue, cutting heads, sticking water-collecting plastic pieces, secondary packaging, pouring hard glue, pouring soft glue and the like. The key of the method is the end enclosure at the end part, but the membrane filaments are difficult to be completely blocked, and the membrane filaments which are not blocked have the entering of hard glue to generate ineffective membrane filaments, so that the effective area of the membrane component is reduced. In addition, the bunchy membrane silk is arranged unorderly, both can influence the flow of glue, causes the product bad, can lead to membrane silk root long-pending mud serious simultaneously in the in-service use in-process, appears desquamating, peels off the phenomenon between the membrane silk, influences the life of product. Obviously, the conventional preparation method of the hollow fiber curtain type membrane component has the disadvantages of complicated operation, low production efficiency, high labor cost and incapability of effectively ensuring the quality of the product.
Patent document No. CN104437094B discloses a hollow fiber curtain type membrane encapsulation device and method, which comprises blocking the ends of membrane filaments by the low temperature crystallization of supersaturated sodium acetate solution and trifluoropropylmethylcyclotrisiloxane solution, adding encapsulation glue, and opening hot water circulation after solidification to melt the crystals and flow out of a water collecting pipe. The method needs cold and hot circulation, has high energy consumption and complex operation process, and is difficult to realize mass production. Furthermore, the choice of the encapsulation medium has a more or less influence on the properties of the membrane filaments.
Patent document No. CN113856473A discloses a "hydrophilic oleophobic hollow fiber membrane module casting process for liquid seal head", which uses saturated sodium chloride solution and honey as seal head feed liquid, injects it into a membrane module casting device inserted with membrane filaments, then injects epoxy resin, after it is completely solidified, discharges the seal head solution and uses pure water to clean the water collecting pipe, and the casting process is completed. The end enclosure solution selected by the method has high cost, more or less loss is generated in the using process, the end enclosure solution is difficult to discharge after the membrane assembly is manufactured, more residues are generated on the inner wall of the water collecting pipe, the washing step is required, and the method is complicated and difficult to realize large-scale mass production.
Disclosure of Invention
The invention aims to solve the following problems: the conventional preparation method of the hollow fiber curtain type membrane component has the technical problems of more packaging processes, complex operation and low production efficiency, and provides the hollow fiber curtain type membrane component which is orderly arranged and the preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a arrange orderly hollow fiber curtain formula membrane module, includes a plurality of membrane curtains and two encapsulation mountings, the membrane curtain is piled up by a plurality of diaphragms and forms, the diaphragm is arranged and is formed through the hot melt adhesive is fixed along same direction by a plurality of hollow fiber membrane silks, a plurality of membrane curtains arrange and both ends are encapsulated respectively and are fixed two along same direction in the encapsulation mounting, be equipped with membrane curtain slot on the encapsulation mounting, the encapsulation mounting is in it is used for the encapsulation fixed to be equipped with in the membrane curtain slot the encapsulation glue film of membrane curtain, be equipped with the encapsulation medium escape canal that is used for the encapsulation medium of discharging on the encapsulation mounting, encapsulation medium escape canal intercommunication external with the bottom of membrane curtain slot.
A method for preparing an orderly-arranged hollow fiber curtain-type membrane component comprises the following steps:
(1) arranging a plurality of membrane filaments in order to prepare a membrane;
(2) stacking and fixing a plurality of membranes to form a membrane curtain with two fixed ends;
(3) bending the membrane curtains to enable two ends to face downwards, and respectively inserting the two ends of the membrane curtains downwards into the two packaging fixing pieces filled with packaging media to immerse and block the holes;
(4) injecting packaging glue;
(5) and after the packaging glue is cured, discharging the packaging medium in the packaging fixing piece.
As an optimal technical scheme, in step (1), through the fixed a plurality of membrane silks of pouring clamping, fixed back of tightening up through rubber coating, moulding, solidification and cutting-off step, form the fixed and regular hollow fiber diaphragm of range in both ends, be equipped with the cavity that is used for pouring into the hot melt adhesive in the pouring clamping, the pouring clamping includes punch holder and lower plate, punch holder and lower plate rotate in one end and connect, the upper surface of lower plate is equipped with a plurality of draw-in grooves of arranging along same direction.
As a preferable technical scheme, in the step (4), the encapsulation glue is injected twice, the curing time of the first layer of encapsulation glue is 20-30 min, the thickness of the first layer of encapsulation glue is 10-15 mm, and the thickness of the second layer of encapsulation glue is 30-40 mm.
As a preferred technical scheme, the packaging glue is polyurethane or epoxy resin or polyacrylic resin.
As a preferred technical scheme, the encapsulation medium is polyethylene glycol or glycerol or sodium polyacrylate.
After the technical scheme is adopted, the invention has the following advantages:
compared with the traditional process, the invention greatly simplifies the manufacturing process of the curtain type membrane component, improves the production efficiency, saves the consumption of membrane wires and glue, reduces the production cost, can improve the effective filling area, prevents the premature wear of the root parts of the membrane wires, and greatly prolongs the service life of the membrane component.
Drawings
FIG. 1 is a schematic diagram of the structure of an aligned hollow fiber curtain membrane module of example 1;
FIG. 2 is a schematic cross-sectional view of an aligned hollow fiber curtain membrane module of example 1;
FIG. 3 is a schematic structural view of a diaphragm;
FIG. 4 is a schematic view of the construction of the pouring clip;
FIG. 5 is a schematic view showing a usage state of the fixing clip;
FIG. 6 is a schematic view showing the structure of an aligned hollow fiber curtain membrane module of example 2;
in the figure:
1-packaging the fixing piece; 2-membrane curtain; 3-hot melt adhesive layer; 4-hollow fiber membrane filaments; 5-packaging the adhesive layer; 51-first layer of packaging glue; 52-second layer of encapsulation glue; 6-packaging medium; 7-lower splint; 8-upper splint; 9-a card slot; 10-rear card clip; 11-front card clip; 12-a nut; 13-bolt.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples.
Example 1
As shown in fig. 1-2, an aligned hollow fiber curtain membrane module includes several membrane curtains 2 and two potting fixtures 1. The membrane curtain 2 is formed by stacking a plurality of membrane sheets, as shown in fig. 3, the membrane sheets are formed by arranging a plurality of hollow fiber membrane filaments 4 along the same direction and fixing the hollow fiber membrane filaments by a hot melt adhesive layer 3.
The dry film curtains 2 are arranged along the same direction, and two ends of each dry film curtain are respectively packaged and fixed in the two packaging fixing pieces 1. The encapsulation fixing member 1 is integrally formed. The packaging fixing piece 1 is provided with a film curtain slot, and the packaging fixing piece 1 is provided with a packaging adhesive layer 5 used for packaging and fixing the film curtain 2 in the film curtain slot. And the packaging fixing piece 1 is provided with a packaging medium discharge channel for discharging packaging media, and the packaging medium discharge channel is communicated with the outside and the bottom of the film curtain slot. The packaging adhesive layer 5 encapsulates a part of the hot melt adhesive layer 3 and the hollow fiber membrane filaments 4 at the end part of the hot melt adhesive layer in the packaging fixing member 1, and the holes at the end part of the hollow fiber membrane filaments 4 are positioned outside the packaging adhesive layer 5 and inside the packaging fixing member 1.
The membrane curtain slot in encapsulation mounting 1 is equallyd divide into 4 districts by the interval, and the height of membrane curtain slot is 60mm, and the pipe diameter of the delivery port of the encapsulation medium discharge passage of encapsulation mounting 1 is 40mm, and encapsulation mounting 1 material is ABS resin.
The membrane curtain 2 is formed by 16 layers of hollow fiber row silk membranes in a stacking mode, the hollow fiber row silk membranes are formed by 60 hollow fiber row silk membranes, the outer diameter of each hollow fiber row silk membrane is 2.0mm, the length of each hollow fiber row silk membrane is 2m, the two ends of each hollow fiber row silk membrane are arranged in order, the distance between each hollow fiber row silk membrane is 1mm, the distance between each hot melt adhesive layer 3 and the end portion of each hollow fiber row silk membrane is 65mm, the height of each hot melt adhesive layer 3 is 30mm, and the thickness of each hot melt adhesive layer is 3 mm.
The packaging adhesive layer 5 is selected from two-component polyurethane and comprises a polyurethane main agent and a polyurethane curing agent, the packaging adhesive layer 5 is injected in two layers, wherein the thickness of the first layer of packaging adhesive is 10mm, and the thickness of the second layer of packaging adhesive is 40 mm.
A method for preparing an orderly-arranged hollow fiber curtain-type membrane component comprises the following steps:
(1) the two ends of the hollow fiber membrane filaments 4 are regularly arranged in the clamping grooves 9 in the pouring clamping clips, the lower clamping plate 7 and the upper clamping plate 8 are tightly pressed and then tightened, hot melt adhesive is injected and tightly pressed again, and redundant membrane filaments are cut after the hollow fiber membrane filaments are completely cured.
As shown in fig. 4, be equipped with the cavity that is used for pouring into the hot melt adhesive in the pouring clamping, the pouring clamping includes punch holder 8 and lower plate 7, punch holder 8 and lower plate 7 rotate at one end and connect, the upper surface of lower plate 7 is equipped with a plurality of draw-in grooves 9 of arranging along the same direction, and the interval of adjacent draw-in groove 9 is 1.0 mm.
(2) As shown in fig. 5, the two ends of the hollow fiber lined membrane sheets prepared by the above process are aligned and stacked respectively, and then placed in a fixing clip, so as to obtain 4 rows of the hollow fiber membrane curtains 2 which are arranged in order.
The fixing clamp comprises a front clamp 11 and a rear clamp 10, the fixing clamp comprises 4 membrane slots for inserting the hollow fiber wire arranging membrane, and the front clamp 11 and the rear clamp 10 are fixedly connected through a nut 12 and a bolt 13 to clamp the hollow fiber wire arranging membrane.
(3) And (3) injecting a packaging medium 6 (polyethylene glycol) into the packaging fixing member 1, then inserting the hollow fiber membrane curtain 2 obtained in the step (2) into the packaging fixing member 1, placing the end part of the hollow fiber membrane wire 4 into the packaging medium 6, then injecting fast-curing polyurethane hard glue, standing for 20min, curing to form a first layer of packaging glue 51, and then adding the polyurethane glue to form a second layer of packaging glue 52.
(4) And after the packaging adhesive layer 5 is cured, the polyethylene glycol in the packaging fixing piece 1 flows out and is recovered, and the membrane assembly is manufactured.
Example 2
As shown in fig. 6, an aligned hollow fiber curtain membrane module includes several membrane curtains 2 and two potting fixtures 1. The membrane curtain 2 is formed by stacking a plurality of membranes, and the membranes are formed by arranging a plurality of hollow fiber membrane filaments 4 along the same direction and fixing the hollow fiber membrane filaments through a hot melt adhesive layer 3.
The dry film curtains 2 are arranged along the same direction, and two ends of each dry film curtain are respectively packaged and fixed in the two packaging fixing pieces 1. The encapsulation fixing member 1 is integrally formed. The packaging fixing piece 1 is provided with a film curtain slot, and the packaging fixing piece 1 is provided with a packaging adhesive layer 5 used for packaging and fixing the film curtain 2 in the film curtain slot. And the packaging fixing piece 1 is provided with a packaging medium discharge channel for discharging packaging media, and the packaging medium discharge channel is communicated with the outside and the bottom of the membrane curtain slot. The packaging adhesive layer 5 packages a part of the hot melt adhesive layer 3 and the hollow fiber membrane filaments 4 at the end part of the hot melt adhesive layer in the packaging fixing part 1, and the holes at the end part of the hollow fiber membrane filaments 4 are positioned outside the packaging adhesive layer 5 and inside the packaging fixing part 1.
The membrane curtain slot in the encapsulation mounting 1 is equally divided into 2 regions at intervals, the height of the membrane curtain slot is 50mm, the pipe diameter of the water outlet of the encapsulation medium discharge passage of the encapsulation mounting 1 is 25mm, and the encapsulation mounting 1 is made of UPVC.
Hollow fiber membrane curtain 2 is piled up by 10 layers of hollow fiber row silk diaphragms and forms, and this hollow fiber row silk diaphragm is by 80, the external diameter is 2.0mm, long 1.7m take lining PVDF hollow fiber membrane silk 4 neatly to arrange both ends fixed and form, and hollow fiber membrane silk 4 interval 0.8mm, and the distance of 3 distance hollow fiber membrane silk 4 tip of hot melt adhesive layer is 65mm, and the height of 3 hot melt adhesive layers is 25mm, and thickness is 2.5 mm.
The selection of the packaging glue layer 5 is double-component epoxy resin, and the packaging glue layer comprises an epoxy resin main agent and an epoxy resin curing agent, wherein the thickness of the first layer of packaging glue is 15mm, and the thickness of the second layer of packaging glue is 35 mm.
A method for preparing an orderly-arranged hollow fiber curtain-type membrane component comprises the following steps:
(1) the two ends of the hollow fiber membrane filaments 4 are regularly arranged in the clamping grooves 9 in the pouring clamping clips, the lower clamping plate 7 and the upper clamping plate 8 are tightly pressed and then tightened, hot melt adhesive is injected and tightly pressed again, and redundant membrane filaments are cut after the hollow fiber membrane filaments are completely cured.
As shown in fig. 4, be equipped with the cavity that is used for pouring into the hot melt adhesive in the pouring clamping, the pouring clamping includes punch holder 8 and lower plate 7, punch holder 8 and lower plate 7 rotate at one end and connect, the upper surface of lower plate 7 is equipped with a plurality of draw-in grooves 9 of arranging along the same direction, and the interval of adjacent draw-in groove 9 is 0.8 mm.
(2) Coating ABS resin on the surface of the hot melt adhesive layer 3 of the hollow fiber filament array membrane prepared in the process, then respectively aligning and stacking the hot melt adhesive layers 3 at two ends, and solidifying and bonding to form the neatly arranged hollow fiber membrane curtain 2.
(3) And (3) injecting a packaging medium 6 (glycerol) into the packaging fixing piece 1, then inserting the hollow fiber membrane curtain 2 obtained in the step (2) into the packaging fixing piece 1, placing the end part of the hollow fiber membrane wire 4 into the packaging medium 6, then injecting a fast curing epoxy resin hard glue, standing for 40min, curing to form a first layer of packaging glue 51, flowing out and recycling the packaging medium 6 in the packaging fixing piece 1, and then adding polyurethane glue to form a second layer of packaging glue 52.
(4) And after the packaging adhesive layer 5 is cured, the membrane assembly is manufactured.
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
Claims (6)
1. The utility model provides a arrange orderly hollow fiber curtain formula membrane module, its characterized in that includes a plurality of membrane curtains and two encapsulation mountings, the membrane curtain is piled up by a plurality of diaphragms and forms, the diaphragm is arranged and is formed through the hot melt adhesive is fixed along same direction by a plurality of hollow fiber membrane silks, a plurality of membrane curtains are arranged and both ends are encapsulated respectively and are fixed two along same direction in the encapsulation mounting, be equipped with membrane curtain slot on the encapsulation mounting, the encapsulation mounting is in it is fixed to be equipped with in the membrane curtain slot to be used for the encapsulation glue film of membrane curtain, be equipped with the encapsulation medium escape canal that is used for discharging the encapsulation medium on the encapsulation mounting, encapsulation medium escape canal communicate external with the bottom of membrane curtain slot.
2. A method for preparing a hollow fiber curtain type membrane component which is arranged in order is characterized by comprising the following steps:
(1) arranging a plurality of membrane filaments in order to prepare a membrane;
(2) stacking and fixing a plurality of membranes to form a membrane curtain with two fixed ends;
(3) bending the membrane curtains to enable two ends to face downwards, and respectively inserting the two ends of the membrane curtains downwards into the two packaging fixing pieces filled with packaging media to immerse and block the holes;
(4) injecting packaging glue;
(5) and after the packaging glue is cured, discharging the packaging medium in the packaging fixing piece.
3. The method for preparing a curtain type membrane module of regularly arranged hollow fibers according to claim 2, wherein in the step (1), a plurality of membrane filaments are fixed by a casting clamp, and after the membrane filaments are fixed and tightened, the hollow fiber membrane with two fixed ends and regular arrangement is formed through the steps of gluing, shaping, curing and cutting, wherein a cavity for injecting hot melt adhesive is arranged in the casting clamp, the casting clamp comprises an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are rotatably connected at one end, and a plurality of clamping grooves arranged in the same direction are formed in the upper surface of the lower clamping plate.
4. The method for preparing a curtain type membrane module of orderly arranged hollow fibers according to claim 2, wherein in the step (4), the encapsulation glue is injected in two times, the curing time of the first layer of encapsulation glue is 20-30 min, the thickness of the first layer of encapsulation glue is 10-15 mm, and the thickness of the second layer of encapsulation glue is 30-40 mm.
5. The method for preparing an aligned hollow fiber curtain membrane module according to claim 2, wherein the potting glue is polyurethane or epoxy resin or polyacrylic resin.
6. The method for preparing an aligned hollow fiber curtain membrane module according to claim 2, wherein the potting medium is polyethylene glycol or glycerol or sodium polyacrylate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210734845.8A CN115121122A (en) | 2022-06-27 | 2022-06-27 | Regularly arranged hollow fiber curtain type membrane assembly and preparation method thereof |
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| CN202210734845.8A CN115121122A (en) | 2022-06-27 | 2022-06-27 | Regularly arranged hollow fiber curtain type membrane assembly and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010184219A (en) * | 2009-02-13 | 2010-08-26 | Mitsubishi Rayon Eng Co Ltd | Method for producing hollow fiber membrane module |
| CN106178958A (en) * | 2016-08-08 | 2016-12-07 | 杭州求是膜技术有限公司 | A kind of lamellar curtain type membrane encapsulation and leak-stopping technique |
| CN108786472A (en) * | 2018-04-04 | 2018-11-13 | 河南迈纳净化技术有限公司 | A kind of packaging method of hollow fiber curtain type membrane component |
| CN112169597A (en) * | 2020-09-21 | 2021-01-05 | 浙江长兴求是膜技术有限公司 | Curtain type membrane assembly in regular arrangement, preparation method thereof and automatic filling device used in preparation method |
| CN113663523A (en) * | 2020-05-15 | 2021-11-19 | 三达膜科技（厦门）有限公司 | Preparation method of hollow fiber membrane component |
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- 2022-06-27 CN CN202210734845.8A patent/CN115121122A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010184219A (en) * | 2009-02-13 | 2010-08-26 | Mitsubishi Rayon Eng Co Ltd | Method for producing hollow fiber membrane module |
| CN106178958A (en) * | 2016-08-08 | 2016-12-07 | 杭州求是膜技术有限公司 | A kind of lamellar curtain type membrane encapsulation and leak-stopping technique |
| CN108786472A (en) * | 2018-04-04 | 2018-11-13 | 河南迈纳净化技术有限公司 | A kind of packaging method of hollow fiber curtain type membrane component |
| CN113663523A (en) * | 2020-05-15 | 2021-11-19 | 三达膜科技（厦门）有限公司 | Preparation method of hollow fiber membrane component |
| CN112169597A (en) * | 2020-09-21 | 2021-01-05 | 浙江长兴求是膜技术有限公司 | Curtain type membrane assembly in regular arrangement, preparation method thereof and automatic filling device used in preparation method |
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