CN101128251B - Permeate spacer module - Google Patents

Permeate spacer module Download PDF

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Publication number
CN101128251B
CN101128251B CN2006800063983A CN200680006398A CN101128251B CN 101128251 B CN101128251 B CN 101128251B CN 2006800063983 A CN2006800063983 A CN 2006800063983A CN 200680006398 A CN200680006398 A CN 200680006398A CN 101128251 B CN101128251 B CN 101128251B
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film
permeate
film system
spacer module
support member
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CN101128251A (en
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N·海嫩
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Alfa Laval AB
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Alfa Laval AB
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Priority claimed from PCT/SE2006/000245 external-priority patent/WO2006091157A1/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/08—Prevention of membrane fouling or of concentration polarisation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention relates to a permeate spacer module comprising a spacer and at least one collection device, which spacer comprises of support members which being spaced apart by at least one inserted element forming flow space or flow channels between the support members and the inserted element for guiding permeates to at least one permeate collection device connected to the flow space or the flow channels. The invention relates further to a membrane system comprising the permeate space module, a process for operating the membrane system, use of the membrane system, a membrane plant and use of the membrane plant.

Description

Permeate spacer module
The present invention relates to the purposes of purposes, film device and the film device of permeate spacer module, film system, the method that operates this film system, film system.
Background of invention
Fluid by barrier film must be transferred to barrier film or contact with barrier film before by barrier film.Be collected into exhaust system and be transferred out of this system by rear fluid.Many barrier films all use the escapement that fluid is transferred to barrier film and shifted from this barrier film.Membrane spacers is disclosed among EP 11201150, WO 2004/103535 and the WO 2004/103536.
Exhaust system (this systematic collection fluid) can be the obturator of fluid, therefore produces the back-pressure that causes causing pressure drop.This back-pressure can limit and flow through barrier film, and pressure drop can cause the barrier film pollution and limit its performance.
Therefore, an object of the present invention is to improve the design of exhaust system, thereby strengthen the performance of barrier film.
Another purpose provides has the barrier film that energy balance is improved.
Invention
Barrier film can be used for micro porous filtration, ultrafiltration, nanofiltration or counter-infiltration.Micro porous filtration is usually the thickest membrane filtration grade in 0.1-10 micron (μ m) scope.Milipore filter is by the molecular weight under holding back classification, and the molecular weight under this is held back is defined as the molecular weight of smallest molecule, and wherein 90% is kept by barrier film.1000-500 under the ultrafiltration range spans is held back, 000 molecular weight.Nano-filtration membrane keeps molecular weight ranges at 100-1,000 solute molecule.Counter-infiltration relates to the finest and close barrier film, and this barrier film can separate even minimum solute molecule.
The fluid definition by barrier film or barrier film-film is penetrant.The fluid definition that stays is concentrate or the retentate that hereinafter is defined as concentrate.Barrier film can be separated by insertion element, escapement or spacer element.Escapement or insertion element can or provide by waveform material, folding material, cast-molding material, extruded material the machining material of the structure that allows fluid freely to flow to gathering system or gathering-device to prepare.
Hereinafter, escapement is defined as the member that the film with barrier film or barrier film separates, and this escapement comprises support member and insertion element.Insertion element is defined as the element that support member is separated.
The present invention relates to permeate spacer module, this assembly comprises escapement and at least one gathering-device, this escapement comprises at least one insertion element and is selected from least one with the support member of lower member: support surface unit (13), solid surface material with perforation, the porous surface material, composite surface material with perforation or hole or its combination, sandwiching surface material or its combination with perforation or hole, support member is separated by at least one insertion element, between support member and insertion element, form the flowing space or flow channel, with penetrant is directed at least one with permeate collection device that permeate spacer module is connected in.
Can be according to the shape of pressure limit, viscosity or adjustment hole or the perforation of fluid, their frequency or amount.Perforation can be hole, groove, slit or its combination.
Insertion element can be vertical wall, corrugated sheet, pleated sheet, casting sheet, molded tablet, extruded sheets, the sheet with pipe, the sheet with otch or flat peak, one way adminicle or its combination.
The flowing space between support member and the insertion element forms passage, the flowing space or flow channel.Passage, the flowing space or flow channel can be connected with at least one permeate collection device or be attached.According to an alternative embodiment, passage, the flowing space or flow channel can extend forward mutually.According to another embodiment, insertion element forms passage, the flowing space or the flow channel that hereinafter is called flow channel, and this type of flow channel extends in parallel each other.Permeate collection device can be the frame of expansion or the means of any collection penetrant, and perhaps permeate collection device can be tubular or U-type extruded form.U-type extruded form gathering-device can be connected with the open end of flow channel in this U-type, and can comprise the flow channel that all are parallel at least one side of distance member, and from flow channel guiding and collection penetrant.Tubular collection device can connect with parallel flow channel, penetrant can flow in the pipe by hole, slit, groove or the means of passing through by any type in the pipe, perhaps pipe can have the otch along this pipe, promoting and being connected of permeate spacer module, and from flow channel guiding and collection penetrant.Flow channel is can be vertically attached with at least one gathering-device or be connected.According to another replacement scheme, at least one gathering-device can connect or attached escapement around all flow channels, the flowing space communicates with at least one permeate collection device, with collection before being sent to holder or further processing.
The thickness of permeate spacer can be at least 0.1mm, and thickness can be as big as and is less than or equal to approximately 20mm.According to an alternate embodiment, thickness can be at least 0.2mm, and in another alternate embodiment, thickness can be at least 0.5mm.According to another alternate embodiment, thickness can be at about 0.1mm to the scope of about 20mm.According to another alternate embodiment, thickness can be at about 0.5mm to the scope of about 15mm.According to another alternate embodiment, thickness can be at about 1mm to the scope of about 5mm.According to another alternate embodiment, thickness can be at about 0.1mm to the scope of about 2.0mm.According to another alternate embodiment, thickness can be at about 0.5mm to the scope of about 1.5mm.
Support member can be by identical material preparation with insertion element, and perhaps support member can be prepared by a kind of material, and insertion element is prepared by another kind of material.Material can be metal, pottery, plastics, composite, paper, porous material, polymer or its combination.According to an alternate embodiment, material can be selected from least a following material: polyolefin elastomer, ethylene vinyl acetate copolymer, the ethylene vinyl acetate terpolymer, styrene-ethylene/butylene-styrene block copolymer, polyurethane, polybutene, polybutene copolymer, polyisoprene, polyisoprene copolymers, acrylate, polysiloxanes, natural rubber, polyisobutene, butyl rubber, polypropylene, polypropylene copolymer, polyethylene, polyethylene and ethylene copolymers, Merlon, fluoropolymer, polystyrene, acrylonitrile-butadiene-styrene copolymer, nylon, polyvinyl chloride and copolymer thereof and blend.
The invention still further relates to the film system, this system comprises permeate spacer, the film of barrier film or barrier film can with the attached on both sides of this permeate spacer.
Barrier film can be welded on the escapement, be glued on the escapement, with the escapement casting together or as a diaphragm cell extrusion molding together, be fixed on the escapement or as the part of escapement structure.
System can comprise at least one permeate collection device, and this device can be tubular or U-type extruded form, and each side of system can be welded or glue together, and can provide at least one to support striped (list) or support bar.
The invention still further relates to the method for collecting penetrant, the method comprises the following steps,
I) with film system of the present invention and fluid contact, penetrant is shifted by barrier film;
Ii) by passage, the flowing space or flow channel in the permeate spacer module, produce permeate stream; And
Iii) with permeate collection at least one permeate collection device, this permeate collection device is connected with passage, the flowing space or flow channel or is attached.
The method also can comprise extra step: iv) with step I ii) in the penetrant collected transfer in collecting tank, container or the well by static pressure.
The present invention relates to the purposes of film system in processing waste water, seawater, surface water or well water, this film system comprises the film of permeate spacer and barrier film.
The film system can be used as water, for example seawater, surface water or well water, the preliminary treatment before the desalter of reverse osmosis type.This film system also can be used for preparing drinking water by surface water or well water.This film system can be used as preliminary treatment or final processing of water.In this case, barrier film will be installed in wherein static pressure will the tank as transmembrane pressure TMP in.
Because low pressure drop in the film system processes water with nano-filtration membrane and remove divalent ion such as calcium, magnesium etc., or low organic molecule is possible such as pesticide.The film system also can be used for aseptic filtration, the purification or concentrated of high molecular weight material.The film system can be used for the aseptic filtration of grape wine, beer, concentration of juices, breast and processes.
Permeate spacer provides good support for barrier film, and passage, the flowing space or flow channel allow flowing freely of fluid or flow, and does not form the obstruction that produces back-pressure.Size and the application of permeate spacer are adapted, and can make it become integral body with different configurations such as plate and frame film or membrane bioreactor (MBR), wherein the pressure drop on the permeate side must keep descending, and forms to avoid the back-pressure under the especially high penetrant outflow speed.
The film system can be used in the dissimilar structure, and comprises all pressure limits, comprises micro porous filtration, ultrafiltration, nanofiltration or counter-infiltration.
In plate and frame film structure, permeate spacer can be used as membrane support plate.
The present invention relates to film device, this equipment comprises film of the present invention system, and this film device also comprises collecting tank, container or well.
In film device or membrane bioreactor, the film system can be placed biological treatment tank, and collecting tank, container or well can be connected with the film system in the outside of this biological treatment tank.The penetrant of collecting from least one permeate collection device can be transferred in collecting tank, container or the well by static pressure, and this collecting tank, container or well are connected with at least one gathering-device in the inside of biological treatment tank.Collected penetrant can store or send to use.
Film device also can comprise pump, and this pump is used for the penetrant that collecting tank, container or a well part are collected is sent back biological treatment tank.According to another alternate embodiment, film device can comprise the Continuous Flow that the film system is placed pending fluid, place the process tank that is not biological treatment tank, perhaps, it for example is the high sea of Saltwater Sea water treatment, or is used for the process tank of the other types fluids such as food industry, chemicals factory, pulp and paper industry.
The present invention relates to the purposes of film device in processing waste water, seawater, surface water or well water.
Because low pressure drop in the film system is processed water with nano-filtration membrane, only remove divalent ion such as calcium, magnesium etc. by the use static pressure, or low organic molecule is possible such as pesticide.
Further exploitation is seen in independent claims and the dependent claims and is illustrated.
Below, will explain in more detail the present invention by accompanying drawing.
The accompanying drawing summary
Fig. 1 shows the diagram partial view of an alternate embodiment of permeate spacer.
Fig. 2 shows the diagram partial view of another alternate embodiment of film system.
Fig. 3 shows the diagram partial view of another alternate embodiment of insertion element.
Fig. 4 shows the diagram partial view of an alternate embodiment of film device.
Fig. 5 shows the diagram partial view of another alternate embodiment of film device.
Accompanying drawing describes in detail
Fig. 1 shows the perspective view of escapement 1, and this escapement is the extruded spacer with extruded support members 2, and this support member is provided with perforation 3.According to this alternate embodiment, insertion element 4 is vertical walls, forms the flowing space 5 between support member 2 and this vertical wall.Barrier film 6 is attached at the two sides of escapement 1.Fig. 2 shows the sectional view of an alternative membrane system 7, and wherein pleated sheet 8 support member 9 that will form parallel channels 10 fluxus formae spaces separates.Attached the barrier film 6 at the top of support member 9.Film system 7 welds together with at least two sides 11.Fig. 3 shows the sectional view of an alternate embodiment of insertion element 12, and this insertion element 12 has had the flat peak 13 of support surface unit effect.
Fig. 4 shows an alternate embodiment of film device of the present invention.According to this embodiment, film system 14 is placed biological treatment tank.Three side surface configurations film systems 14 by welding film system.It can be tubular or 15 terminations of the gathering-device of U-type extruded form that the 4th side used.Each side of welding can be equipped with and support striped, support bar or other anything (not showing) in Fig. 4, they will keep this film system can expand to large as far as possible zone.Fluid in passage (not showing in Fig. 4), namely penetrant and air are sent to gathering-device 15, are sent to vertical tube 16 from gathering-device by means of hydrostatic fluid.The bottom of pipe 16 is in the level lower than film system, so that static pressure can form.Pipe 16 top is higher than water level, and this end of pipe is open, with the discharge air.
Fig. 5 shows another alternate embodiment of film device.The film system is immersed in the biological treatment tank below the water level of tank fully.According to this embodiment, collecting tank or well 17 are placed the outside of biological treatment tank.Water-head between the outlet of permeate collection device 15 and the tank middle water level produces static pressure, and the enough generations of this static pressure can cause flow to cross the transmembrane pressure of permeate collection escapement septation.Fluid is from this permeate collection escapement is collected into one, two or several gathering-device 15, and this gathering-device 15 can be tubular, U-type extruded form or other geometric configurations.Penetrant enters into well or collecting tank 17 by gravity, and wherein the water level of water table ratio master tank is low.This water-head produces the essential static pressure of operation film system.Static pressure can be regulated by the water level in the control well 17.
In the following example, carried out flow velocity and the rate of outflow with respect to the research of time, and compared between the film system of an alternate embodiment at conventional spiral wound membrane escapement with according to the present invention.The purpose of embodiment is the performance that illustrates permeate spacer and penetrant system, and is not intended to limit the scope of the invention.
Embodiment 1
Disclosed film device is tested among use Fig. 4.Monitoring permeate stream and penetrant flow out in 16 days.Vacuum need not be exerted pressure or use to test period on the barrier film, and the film system just can move.Static pressure is enough to oppress water and passes through barrier film.Static pressure changes the permeate stream that can regulate by barrier film.These variations can be passed through in the tank or the control of the water level in the well.The area of film system is 3.753m 2, the test period air themperature is between-5 ℃-5 ℃.The result is summarised in the table 1.
Table 1
Fate The horizontal H1[m of penetrant] The horizontal H2[m of tank] Static pressure H1-H2[bar] Total permeate stream [dm 3/h] Coolant-temperature gage [℃] 0.1 bar and the permeate stream [dm 25 ℃ the time 3/(m 2×h)]
1 1.3 0.55 0.075 35.6 7.8 19
2 1.3 0.55 0.075 38.8 7.8 21
3 1.3 0.55 0.075 39.8 7.8 21
4 1.3 0.58 0.072 29.4 84 16
5 1.3 0.60 0.070 26.6 8.8 15
6 1.3 0.54 0.076 18.3 8.0 10
7 1.3 0.55 0.075 24.1 8.2 13
8 1.3 0.60 0.070 24.8 8.6 14
9 1.3 0.62 0.068 24.9 8.7 14
10 1.3 0.55 0.075 24.5 8.1 13
11 1.3 0.60 0.070 21.9 7.8 13
12 1.3 0.65 0.065 20.4 8.0 13
13 1.3 0.62 0.068 20.5 8.0 12
14 1.3 0.62 0.068 20.0 8.1 12
15 1.3 0.62 0.068 21.0 8.1 12
16 1.3 0.62 0.068 20.2 8.1 12
Embodiment 2 (comparison)
In this embodiment, will with the attached conventional spiral winding spacer element of gathering-device with according to the attached permeate spacer comparison of Fig. 1 and gathering-device.Each side of spiral winding spacer element and permeate spacer all is provided with barrier film.Static pressure is 1.2m, and the flux of the conventional escapement that records is 16dm 3/ m 2* h, the flux of permeate spacer are 100dm 3/ m 2* h, the ratio that shows permeate spacer of the present invention and conventional escapement is 6.25.The conclusion that is drawn by the result be in addition when small throughput free-pouring importance on the permeate side, and ratio increases when higher flux level.

Claims (25)

1. film system, described film system comprises permeate spacer module, described permeate spacer module comprises escapement and at least one permeate collection device, the film of its septation, leaf or sheet are attached at the two sides of described escapement, described escapement comprises at least one insertion element and support member, described support member is selected from the solid surface material with perforation
Described support member is spaced apart by described at least one insertion element, between described support member and described insertion element, form flow channel, with penetrant is directed to be connected with described permeate spacer module or attached permeate collection device in, wherein said flow channel is parallel to each other, and be connected or attached with described permeate collection device is vertical, and at least part of welding of wherein said barrier film, or at least part of being glued on the described escapement.
2. the film system of claim 1, the described flowing space of wherein said permeate spacer module is connected with described at least one permeate collection device or is attached, and described at least one permeate collection device all is connected with this escapement along each side of described escapement or attached.
3. each film system in the claim 1 or 2, the described insertion element of wherein said permeate spacer module is vertical wall, corrugated sheet, pleated sheet, casting sheet, molded tablet, extruded sheets, the sheet with pipe, the sheet with otch or flat peak, one way adminicle or its combination.
4. each film system in the claim 1 or 2, the described support member of wherein said permeate spacer module and described at least one insertion element are respectively by being selected from least a following material preparation: metal, composite, paper, cellulose, porous material, polymer, glass or its combination.
5. the film system of claim 4, the described support member of wherein said permeate spacer module and described at least one insertion element are respectively by being selected from least a following material preparation: pottery, plastics, glass fibre or its combination.
6. the film system of claim 4, the described support member of wherein said permeate spacer module and described at least one insertion element are respectively by being selected from least a following material preparation: polyolefin elastomer, ethylene vinyl acetate copolymer, the ethylene vinyl acetate terpolymer, styrene-ethylene/butylene-styrene block copolymer, polyurethane, polybutene, polybutene copolymer, polyisoprene, polyisoprene copolymers, acrylate, polysiloxanes, natural rubber, polyisobutene, butyl rubber, polypropylene, polypropylene copolymer, polyethylene, polyethylene and ethylene copolymers, Merlon, fluoropolymer, polystyrene, acrylonitrile-butadiene-styrene copolymer, nylon, polyvinyl chloride and copolymer thereof and blend.
7. each film system in the claim 1 or 2, the described support member of wherein said permeate spacer module is spaced apart in the distance of 0.1mm at least.
8. each film system in the claim 1 or 2, the described support member of wherein said permeate spacer module is spaced apart in the distance less than 20mm.
9. each film system in the claim 1 or 2, the described support member of wherein said permeate spacer module is spaced apart in the distance of 1mm to 5mm.
10. each film system in the claim 1 or 2, described at least one permeate collection device of wherein said permeate spacer module are the tubular frame that expands or the U-type extrusion molding frame of expansion.
11. also comprising, the film system of claim 10, wherein said system support or support bar.
12. each film system in claim 1 or 2, wherein said escapement or insertion element can or provide by waveform material, folding material, cast-molding material, extruded material the machining material of the structure that allows fluid freely to flow to gathering system or gathering-device to prepare.
13. a method of collecting penetrant, described method comprises the following steps:
I) with each film system and fluid contact among the claim 10-12, penetrant is shifted by barrier film;
Ii) by the flow channel in the described permeate spacer module, produce permeate stream; And
Iii) with described permeate collection in described at least one permeate collection device, this permeate collection device is connected with described flow channel.
14. the method for claim 13, described method also comprises step:
Iv) by static pressure, with step I ii) in the penetrant collected transfer in the container.
15. the purposes of each film system in waste water, seawater, surface water or well water are processed among the claim 10-12.
16. among the claim 10-12 each film system high molecular weight material aseptic filtration, purification or concentrated in purposes.
17. the purposes of each film system in the aseptic filtration of grape wine, beer, concentration of juices, breast is processed among the claim 10-12.
18. a film device, described film device comprise among the claim 10-12 each film system, and described film device also comprises container.
19. the film device of claim 18, wherein said film system places biological treatment tank.
20. the film device of claim 18 or 19, wherein said container is connected with described film system in the outside of described biological treatment tank, penetrant collected in described at least one permeate collection device that is connected with described permeate spacer module is connected with described container, and described penetrant is transferred to the described container from described at least one permeate collection device that is connected with described permeate spacer module by static pressure.
21. each film device in claim 18 or 19, described equipment also comprises pump, and this pump is used for the described penetrant of a part is transported back described biological treatment tank from described container.
22. the film device of claim 18, wherein said film system is below the liquid level of liquid handling tank, and described container is in the outside of described liquid handling tank, the poor generation static pressure of the liquid level of the outlet of described permeate collection device and the liquid level of described process tank, the enough generations of this static pressure can cause liquid to flow through the transmembrane pressure of described permeate spacer septation.
23. the purposes of each film device in wastewater treatment among the claim 18-22.
24. a plate and frame film, described plate and frame film comprise among at least one claim 10-12 each film system.
25. a membrane bioreactor, described membrane bioreactor comprise among at least one claim 10-12 each film system.
CN2006800063983A 2005-02-28 2006-02-23 Permeate spacer module Active CN101128251B (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US65754705P 2005-02-28 2005-02-28
US60/657,547 2005-02-28
SE0500470A SE534744C2 (en) 2005-02-28 2005-02-28 Flat membrane system comprising a spacer element
SE05004700 2005-02-28
SE0500470-0 2005-02-28
PCT/SE2006/000245 WO2006091157A1 (en) 2005-02-28 2006-02-23 Permeate spacer module

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CN101128251A CN101128251A (en) 2008-02-20
CN101128251B true CN101128251B (en) 2013-03-06

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CA3026597A1 (en) * 2016-06-08 2017-12-14 Vito Nv (Vlaamse Instelling Voor Technologisch Onderzoek Nv) Membrane support made with preformed sheets

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476022A (en) * 1983-03-11 1984-10-09 Doll David W Spirally wrapped reverse osmosis membrane cell
EP0351879A1 (en) * 1988-07-21 1990-01-24 Günter Dr. Wiedner Salt water distillation apparatus
EP0581544A2 (en) * 1992-07-29 1994-02-02 Exxon Research And Engineering Company Membrane element for a separation process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476022A (en) * 1983-03-11 1984-10-09 Doll David W Spirally wrapped reverse osmosis membrane cell
EP0351879A1 (en) * 1988-07-21 1990-01-24 Günter Dr. Wiedner Salt water distillation apparatus
EP0581544A2 (en) * 1992-07-29 1994-02-02 Exxon Research And Engineering Company Membrane element for a separation process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP平9-313898A 1997.12.09

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NZ556684A (en) 2011-05-27
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SE0500470L (en) 2006-08-29

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