CA2588675A1 - Membrane post treatment - Google Patents

Membrane post treatment Download PDF

Info

Publication number
CA2588675A1
CA2588675A1 CA002588675A CA2588675A CA2588675A1 CA 2588675 A1 CA2588675 A1 CA 2588675A1 CA 002588675 A CA002588675 A CA 002588675A CA 2588675 A CA2588675 A CA 2588675A CA 2588675 A1 CA2588675 A1 CA 2588675A1
Authority
CA
Canada
Prior art keywords
cross
ultrafiltration membrane
linkable component
polymeric microfiltration
microfiltration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002588675A
Other languages
French (fr)
Inventor
Daniel Mullette
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Industry Inc
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from AU2004906947A external-priority patent/AU2004906947A0/en
Application filed by Individual filed Critical Individual
Publication of CA2588675A1 publication Critical patent/CA2588675A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081After-treatment of organic or inorganic membranes
    • B01D67/0093Chemical modification
    • B01D67/00931Chemical modification by introduction of specific groups after membrane formation, e.g. by grafting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/30Polyalkenyl halides
    • B01D71/32Polyalkenyl halides containing fluorine atoms
    • B01D71/34Polyvinylidene fluoride
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081After-treatment of organic or inorganic membranes
    • B01D67/0093Chemical modification
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/145Ultrafiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/147Microfiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/76Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
    • B01D71/82Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74 characterised by the presence of specified groups, e.g. introduced by chemical after-treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2323/00Details relating to membrane preparation
    • B01D2323/30Cross-linking

Abstract

Hydrophilic porous polymeric membranes with high permeabilities, and processes for the preparation thereof are disclosed. Membranes may be prepared by including a preferably hydrophilic cross-linkable component such as PVP (either by inclusion into the polymer dope prior to casting, or coating or quenching cast membranes); and treating the polymeric microfiltration or ultrafiltration membrane with a crosslinking agent to cross-link said cross-linkable component. Preferred cross-linking agents include Fenton's reagent.

Claims (44)

1. A method of forming a hydrophilic polymeric microfiltration or ultrafiltration membrane including the steps of:
i) preparing a polymeric microfiltration or ultrafiltration membrane which contains a cross-linkable component; and ii) treating said polymeric microfiltration or ultrafiltration membrane with a crosslinking agent to cross-link said cross-linkable component.
2. A method according to claim 1 wherein the cross linkable component is a hydrophilic cross-linkable component.
3. A method according to claim 2 wherein the hydrophilic cross-linkable component is capable of free radical cross linking.
4. A method according to claim 2 wherein the hydrophilic cross-linkable component is capable of cross-linking under oxidative conditions.
5. A method according to claim 2 wherein the hydrophilic cross-linkable component is capable of cross-linking in the presence of hydroxyl radicals.
6. A method according to any one of the preceding claims wherein the cross linkable component is selected from the group consisting of monomers, oligomers, polymers and copolymers of one or more of the following: vinyl pyrrolidone, vinyl acetate, vinyl alcohol, vinyl methyl ether, vinyl ethyl ether, acrylic acid, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate propyl methacrylate, butyl methacrylate and maleic anhydride.
7. A method according to any one of the preceding claims wherein the cross linkable component is selected from poly(vinyl pyrrolidone), poly(vinyl acetate) or copolymers of vinyl pyrrolidone and vinyl acetate.
8. A method according to any one of the preceding claims wherein the cross linkable component is incorporated into the polymer dope prior to casting as a porous polymeric microfiltration or ultrafiltration membrane, and the porous polymeric microfiltration or ultrafiltration membrane is then treated with a cross-linking agent to cross-link said cross-linkable component.
9. A method according to any one of claims 1 to 8 wherein a porous polymeric microfiltration or ultrafiltration membrane is treated with a coating, a lumen forming fluid or a quench containing a cross-linkable component during membrane formation, and then treated with a cross-linking agent to cross-link said cross-linkable component.
10. A method according to any one of the preceding claims wherein the cross-linkable component is added in an amount which produces only a minimal attenuation of the hydrophilicity/hydrophobicity balance of the membrane.
11. A method according to any one of the preceding claims wherein the polymeric microfiltration or ultrafiltration membrane includes a hydrophobic component.
12. A method according to any one of the preceding claims wherein the polymeric microfiltration or ultrafiltration membrane includes a non-crosslinkable component.
13. A method according to any one of claims 11 or 12 wherein the hydrophobic and/or non-cross linkable component is a polymer or copolymer of oxidation resistant material.
14. A method according to any one of claims 11 to 13 wherein the hydrophobic and/or non-cross linkable component is a polymer or copolymer resistant to base attack.
15. A method according to any one of claims11 to 14 wherein the hydrophobic and/or non-cross linkable component contains one or more of the following monomers:
chlorotrifluoroethylene, vinyl fluoride, vinyl chloride; vinylidene fluoride/
vinylidene chloride/;
hexafluoropropylene, ethylene-chlorotrifluoroethlyene, tetrafluoroethylene.
16. A method according to claim 15 wherein the hydrophobic and/or non-cross linkable component is PVdF.
17. A method according to any one of the preceding claims wherein cross linking is by treating the polymeric ultrafiltration or microfiltration membrane with a hydroxyl radical.
18. A method according to claim 17 wherein the hydroxyl radical is generated by of an aqueous solution of Ferric chloride/hydrogen peroxide/sodium hydrogensulfate.
19. A method according to claim 17 wherein the hydroxyl radical is generated by aqueous acidified hydrogen peroxide.
20. A method according to claim 17 wherein the hydroxyl radical is generated by an aqueous organic peroxy acid.
21. A method according to claim 17 wherein the hydroxyl radical is generated by peracetic acid.
22. A method according to claim 17 wherein the hydroxyl radical is generated by aqueous hydrogen peroxide under ultraviolet radiation.
23. A method according to claim 17 wherein the hydroxyl radicals are generated by a combination of hydrogen peroxide and ozone, with or without UV radiation at any pH in the range 2-9.
24. A method according to claim 17 including treating the membranes with a solution of hydroxyl radicals prepared from an aqueous solution of transition metal catalyst in conjunction with hydrogen peroxide at a pH of 2-9.
25. A method according to claim 24 further comprising applying UV radiation.
26. A method according to claim 24 wherein the transition metal catalyst is a mixture of iron II/iron III.
27. A method according to claim 24 involving one or more of soaking, filtering or recirculating to cross-link the crosslinkable compound to the polymer matrix.
28. A method according to any one of the preceding claims further including, after crosslinking, the step of leaching unbound excess copolymer, where present, from the porous polymeric microfiltration or ultrafiltration membrane.
29. A method according to claim 28 wherein the excess unbound copolymer, where present, is leached with water or any other suitable solvent, for a predetermined time or to a predetermined level of leachate.
30. A method of functionalising a polymeric microfiltration or ultrafiltration membrane including:
i) preparing a polymeric microfiltration or ultrafiltration membrane which contains a component which is cross-linkable;
ii) treating said polymeric microfiltration or ultrafiltration membrane with a hydroxyl radical to cross-link said cross-linkable component; and iii) leaching, where present, any unbound cross linked or unbound cross-linkable component.
31. A method according to claim 30 wherein polymeric microfiltration or ultrafiltration membrane which contains a cross linkable component is prepared from a polymer dope comprising a cross-linkable component
32. A method according to claim 29 wherein polymeric microfiltration or ultrafiltration membrane which contains a cross linkable component is prepared by treating a cast polymeric microfiltration or ultrafiltration membrane with a cross-linkable component
33. A method of increasing the permeability of a polymeric microfiltration or ultrafiltration membrane including:

i) preparing a polymeric microfiltration or ultrafiltration membrane which contains a component which is cross-linkable;

ii) treating said polymeric microfiltration or ultrafiltration membrane with a hydroxyl radical to cross-link said cross-linkable component; and iii) leaching, where present, any unbound cross linked or unbound cross-linkable component.
34. A method according to claim 33 wherein polymeric microfiltration or ultrafiltration membrane which contains a cross linkable component is prepared from a polymer dope comprising a cross-linkable component
35. A method according to claim 34 wherein polymeric microfiltration or ultrafiltration membrane which contains a cross linkable component is prepared by treating a cast polymeric microfiltration or ultrafiltration membrane with a cross-linkable component
36. A porous polymeric microfiltration or ultrafiltration membrane including a cross-linked hydrophilic polymer or copolymer.
37. A porous polymeric microfiltration or ultrafiltration membrane according to claim 36 wherein the cross-linked hydrophilic polymer or copolymer is integrated into a matrix of a porous microfiltration or ultrafiltration membrane also includes a non cross-linked and/or hydrophobic component.
38. A porous polymeric microfiltration or ultrafiltration membrane according to claim 36 or 37 which is an asymmetric membrane, having a large pore face and a small pore face, and a pore size gradient which runs across the membrane cross section.
39. A porous polymeric microfiltration or ultrafiltration membrane according to any one of claims 36 to 38 in the form of a flat sheet.
40. A porous polymeric microfiltration or ultrafiltration membrane according to any one of claim 36 to 38 in the form of hollow fibre membranes.
41. A porous polymeric microfiltration or ultrafiltration membrane according to any one of claims 36 to 40 for use in the microfiltration and ultrafiltration of water and wastewater.
42. A porous polymeric microfiltration or ultrafiltration membrane according to any one of claims 36 to 40 for use as an affinity membrane.
43. A porous polymeric microfiltration or ultrafiltration membrane according to any one of claims 36 to 40 for use as protein adsorption.
44. A porous polymeric microfiltration or ultrafiltration membrane according to any one of claims 36 to 40 for use in processes requiring bio-compatible functionalised membranes.
CA002588675A 2004-12-03 2005-12-02 Membrane post treatment Abandoned CA2588675A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2004906947 2004-12-03
AU2004906947A AU2004906947A0 (en) 2004-12-03 Membrane post treatment
PCT/AU2005/001820 WO2006058384A1 (en) 2004-12-03 2005-12-02 Membrane post treatment

Publications (1)

Publication Number Publication Date
CA2588675A1 true CA2588675A1 (en) 2006-06-08

Family

ID=36564686

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002588675A Abandoned CA2588675A1 (en) 2004-12-03 2005-12-02 Membrane post treatment

Country Status (11)

Country Link
US (1) US7867417B2 (en)
EP (1) EP1827664B1 (en)
JP (1) JP2008521598A (en)
KR (1) KR20070089981A (en)
CN (1) CN101084057B (en)
AT (1) ATE511915T1 (en)
CA (1) CA2588675A1 (en)
ES (1) ES2365928T3 (en)
MY (1) MY141919A (en)
NZ (1) NZ555302A (en)
WO (1) WO2006058384A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003903507A0 (en) 2003-07-08 2003-07-24 U. S. Filter Wastewater Group, Inc. Membrane post-treatment
US8524794B2 (en) 2004-07-05 2013-09-03 Siemens Industry, Inc. Hydrophilic membranes
US7537718B2 (en) * 2004-10-13 2009-05-26 3M Innovative Properties Company Hydrophilic polyethersulfone membrane and method for preparing same
ATE511915T1 (en) 2004-12-03 2011-06-15 Siemens Industry Inc MEMBRANE AFTERTREATMENT
AU2006261581B2 (en) * 2005-06-20 2012-03-15 Evoqua Water Technologies Llc Cross linking treatment of polymer membranes
KR20080033279A (en) * 2005-06-20 2008-04-16 지멘스 워터 테크놀로지스 코포레이션 Cross linking treatment of polymer membranes
WO2010032808A1 (en) * 2008-09-19 2010-03-25 東レ株式会社 Separation membrane, and method for producing same
AU2013273668B2 (en) * 2009-12-14 2016-05-12 3M Innovative Properties Company Microperforated polymeric film and methods of making and using the same
TWI506070B (en) 2009-12-14 2015-11-01 3M Innovative Properties Co Microperforated polymeric film and methods of making and using the same
CN101966433B (en) * 2010-09-19 2012-09-26 大连先路科技发展有限公司 Hydrophilic modification method of ultrafiltration membrane
US9242876B2 (en) 2011-04-15 2016-01-26 William Marsh Rice University Methods, systems and membranes for separation of organic compounds from liquid samples
CN102240510B (en) * 2011-05-18 2013-10-09 浙江大学 Method for preparing super-hydrophilic polyvinylidene fluoride membrane
EP2529826A1 (en) * 2011-05-31 2012-12-05 Nederlandse Organisatie voor toegepast -natuurwetenschappelijk onderzoek TNO Membrane filtration system comprising a deformable side wall
US9174173B2 (en) 2011-09-09 2015-11-03 University Of Kentucky Research Foundation Chemical processing cell with nanostructured membranes
EP2895257A1 (en) 2012-09-14 2015-07-22 Evoqua Water Technologies LLC A polymer blend for membranes
EP2883599A3 (en) * 2013-11-25 2015-10-14 Lotte Chemical Corporation of (Sindaebang-dong) Polymer resin composition for preparing hollow fiber membrane, preparation method of hollow fiber membrane, and hollow fiber membrane
CN113731188A (en) * 2014-03-26 2021-12-03 株式会社可乐丽 Hollow fiber membrane and method for producing hollow fiber membrane
US9630151B2 (en) 2015-03-31 2017-04-25 Pall Corporation Hydrophilically modified fluorinated membrane (V)
WO2017011068A1 (en) 2015-07-14 2017-01-19 Evoqua Water Technologies Llc Aeration device for filtration system
CN105133307A (en) * 2015-09-09 2015-12-09 长春工业大学 Method for enhancing physical properties of electrostatic spinning nanofiber membrane by chemical crosslinking
WO2018164720A1 (en) 2017-03-06 2018-09-13 Tangent Company Llc Home sewage treatment system
US10646829B2 (en) 2017-06-22 2020-05-12 Teledyne Scientific & Imaging, Llc High flux, chlorine resistant coating for sulfate removal membranes

Family Cites Families (307)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994135A (en) * 1933-12-18 1935-03-12 John Schrott Diaper
US2732357A (en) 1949-11-25 1956-01-24 Suspensions of polymeric chlorotri-
US2658045A (en) 1951-03-05 1953-11-03 Gen Aniline & Film Corp Polyvinyl pyrrolidone gels and process of producing the same
NL269380A (en) * 1960-09-19
NL296139A (en) 1963-08-02
US3556305A (en) * 1968-03-28 1971-01-19 Amicon Corp Composite membrane and process for making same
US3625827A (en) 1968-09-27 1971-12-07 Monsanto Co Water-soluble polymer-enzyme products
US3693406A (en) 1970-01-26 1972-09-26 Air Intake Renu Method for inspecting filters
US3708071A (en) * 1970-08-05 1973-01-02 Abcor Inc Hollow fiber membrane device and method of fabricating same
US3744642A (en) * 1970-12-30 1973-07-10 Westinghouse Electric Corp Interface condensation desalination membranes
US3654147A (en) * 1971-03-16 1972-04-04 Biospherics Inc Nitrate removal from sewage
US3864289A (en) 1971-04-07 1975-02-04 Koratec Inc Preparation of cellulosic semi-permeable membranes
US3728256A (en) * 1971-06-22 1973-04-17 Abcor Inc Crossflow capillary dialyzer
FR2236537B1 (en) 1973-07-11 1977-12-23 Rhone Poulenc Ind
US3876738A (en) * 1973-07-18 1975-04-08 Amf Inc Process for producing microporous films and products
US3992301A (en) 1973-11-19 1976-11-16 Raypak, Inc. Automatic flushing system for membrane separation machines such as reverse osmosis machines
US3968192A (en) 1974-04-19 1976-07-06 The Dow Chemical Company Method of repairing leaky hollow fiber permeability separatory devices
IT1040274B (en) 1975-07-30 1979-12-20 Consiglio Nazionale Ricerche PROCEDURE FOR PREPARATION OF ANISOTROPIC MEMBRANES SUPPORTED FOR REVERSE OSMOSIS BASED ON SYNTHETIC POLYAMIDES
US4192750A (en) * 1976-08-09 1980-03-11 Massey-Ferguson Inc. Stackable filter head unit
US4247498A (en) * 1976-08-30 1981-01-27 Akzona Incorporated Methods for making microporous products
US4203848A (en) * 1977-05-25 1980-05-20 Millipore Corporation Processes of making a porous membrane material from polyvinylidene fluoride, and products
US4519909A (en) * 1977-07-11 1985-05-28 Akzona Incorporated Microporous products
US4193780A (en) * 1978-03-20 1980-03-18 Industrial Air, Inc. Air filter construction
ZA792326B (en) 1978-05-15 1980-06-25 Pall Corp Process for preparing polyamide membrane filter media and product
JPS5535910A (en) 1978-09-06 1980-03-13 Teijin Ltd Permselectivity composite membrane and preparation thereof
US4188817A (en) * 1978-10-04 1980-02-19 Standard Oil Company (Indiana) Method for detecting membrane leakage
JPS5554004A (en) 1978-10-18 1980-04-21 Teijin Ltd Selective permeable membrane and its manufacturing
BE874961A (en) * 1979-03-20 1979-09-20 Studiecentrum Kernenergi PROCESS FOR PREPARING A MEMBRANE, THEREFORE PREPARED MEMBRANE, ELECTROCHEMICAL CELL WITH SUCH MEMBRANE AND USING SUCH ELECTROchemical cell
US4218324A (en) 1979-05-03 1980-08-19 Textron, Inc. Filter element having removable filter media member
US4248648A (en) * 1979-07-18 1981-02-03 Baxter Travenol Laboratories, Inc. Method of repairing leaks in a hollow capillary fiber diffusion device
JPS5695304A (en) 1979-12-28 1981-08-01 Teijin Ltd Perm selective composite membrane and its production
US4629563B1 (en) 1980-03-14 1997-06-03 Memtec North America Asymmetric membranes
DE3026718A1 (en) 1980-07-15 1982-02-04 Akzo Gmbh, 5600 Wuppertal HOLLOW FIBER MEMBRANE FOR PLASMA SEPARATION
JPS5770144A (en) * 1980-10-17 1982-04-30 Asahi Glass Co Ltd Organic solution of fluorinated copolymer containing carboxyl group
US4384474A (en) * 1980-10-30 1983-05-24 Amf Incorporated Method and apparatus for testing and using membrane filters in an on site of use housing
US4354443A (en) 1980-11-10 1982-10-19 Dason International Products Inc. Afghan construction and method
JPS57102202A (en) * 1980-12-18 1982-06-25 Toyobo Co Ltd Fluid separator
JPS6059933B2 (en) 1981-05-22 1985-12-27 工業技術院長 Polymer membrane with maleic anhydride residues
US4702840A (en) 1982-02-05 1987-10-27 Pall Corporation Charge modified polyamide membrane
US4707266A (en) 1982-02-05 1987-11-17 Pall Corporation Polyamide membrane with controlled surface properties
US4812235A (en) * 1982-03-29 1989-03-14 Hr Textron, Inc. Filter element assembly replaceable mesh pack
US4540490A (en) 1982-04-23 1985-09-10 Jgc Corporation Apparatus for filtration of a suspension
US4431545A (en) * 1982-05-07 1984-02-14 Pall Corporation Microporous filter system and process
WO1983003984A1 (en) 1982-05-13 1983-11-24 Gerhard Kunz Method for the treatment of a liquid phase, particularly method for desalting aqueous solutions, as well as device for its implementation
JPS5952507A (en) * 1982-06-03 1984-03-27 デ−・エル・エム・ドクトル・ミユラ−・アクチエンゲゼルシヤフト Apparatus for continuously concentrating suspension
JPS5875301A (en) 1982-07-09 1983-05-07 Junkosha Co Ltd Transmission line
GB2132366B (en) 1982-12-27 1987-04-08 Brunswick Corp Method and device for testing the permeability of membrane filters
CA1221645A (en) 1983-02-28 1987-05-12 Yoshihiro Okano Filtration apparatus using hollow fiber-membrane
GB8313635D0 (en) * 1983-05-17 1983-06-22 Whatman Reeve Angel Plc Porosimeter
US4636296A (en) * 1983-08-18 1987-01-13 Gerhard Kunz Process and apparatus for treatment of fluids, particularly desalinization of aqueous solutions
DE3333834A1 (en) 1983-09-20 1985-04-04 Herberts Gmbh, 5600 Wuppertal METHOD FOR THE PRODUCTION OF VARNISH RESIN AND ELECTRIC DIVING VARNISH COATING AGENT THEREOF
US4650586A (en) * 1983-09-26 1987-03-17 Kinetico, Inc. Fluid treatment system
US4756875A (en) 1983-09-29 1988-07-12 Kabushiki Kaisha Toshiba Apparatus for filtering water containing radioactive substances in nuclear power plants
EP0160014B1 (en) 1983-09-30 1993-01-07 Memtec Limited Cleaning of filters
US4888115A (en) 1983-12-29 1989-12-19 Cuno, Incorporated Cross-flow filtration
US4609465A (en) 1984-05-21 1986-09-02 Pall Corporation Filter cartridge with a connector seal
EP0170895B1 (en) 1984-07-09 1989-03-22 Millipore Corporation Improved electrodeionization apparatus and method
JPS6125903U (en) * 1984-07-24 1986-02-15 株式会社 伊藤鉄工所 filtration equipment
DE3428307A1 (en) 1984-08-01 1986-02-13 Filterwerk Mann & Hummel Gmbh, 7140 Ludwigsburg DISPLAY DEVICE FOR THE POLLUTION LEVEL OF SUCTION AIR FILTERS
US5192478A (en) * 1984-10-22 1993-03-09 The Dow Chemical Company Method of forming tubesheet for hollow fibers
US4618533A (en) * 1984-11-30 1986-10-21 Millipore Corporation Porous membrane having hydrophilic surface and process
US5198162A (en) * 1984-12-19 1993-03-30 Scimat Limited Microporous films
GB2168981B (en) 1984-12-27 1988-07-06 Asahi Chemical Ind Porous fluorine resin membrane and process for preparation thereof
US5024762A (en) 1985-03-05 1991-06-18 Memtec Limited Concentration of solids in a suspension
JPH0667459B2 (en) 1985-03-05 1994-08-31 メムテック・リミテッド Method and device for concentrating fine solids in suspension
US4642182A (en) * 1985-03-07 1987-02-10 Mordeki Drori Multiple-disc type filter with extensible support
US4816160A (en) * 1985-03-28 1989-03-28 Memtec Limited Cooling hollow fibre cross-flow separators
US4704324A (en) * 1985-04-03 1987-11-03 The Dow Chemical Company Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups
EP0218644B1 (en) 1985-04-10 1990-06-13 Memtec Limited Variable volume filter or concentrator
CA1247329A (en) 1985-05-06 1988-12-28 Craig J. Brown Fluid treatment process and apparatus
JPS61274709A (en) 1985-05-29 1986-12-04 Ebara Corp Hollow yarn membrane filter apparatus
US4660411A (en) * 1985-05-31 1987-04-28 Reid Philip L Apparatus for measuring transmission of volatile substances through films
JPS6238205A (en) * 1985-08-12 1987-02-19 Daicel Chem Ind Ltd Semi-permeable membrane for separation
US4656865A (en) * 1985-09-09 1987-04-14 The Dow Chemical Company System for analyzing permeation of a gas or vapor through a film or membrane
US4876006A (en) 1985-10-08 1989-10-24 Ebara Corporation Hollow fiber filter device
DE3546091A1 (en) * 1985-12-24 1987-07-02 Kernforschungsz Karlsruhe CROSS-CURRENT MICROFILTER
US4779448A (en) 1986-01-28 1988-10-25 Donaldson Company, Inc. Photoelectric bubble detector apparatus and method
JPH0742861B2 (en) 1986-03-10 1995-05-15 ヤマハ発動機株式会社 Internal combustion engine intake system
US4774132A (en) 1986-05-01 1988-09-27 Pall Corporation Polyvinylidene difluoride structure
DE3617724A1 (en) * 1986-05-27 1987-12-03 Akzo Gmbh METHOD FOR DETERMINING THE BLOW POINT OR THE BIGGEST PORE OF MEMBRANES OR FILTER MATERIALS
FR2600265B1 (en) * 1986-06-20 1991-09-06 Rhone Poulenc Rech DRY AND HYDROPHILIC SEMI-PERMEABLE MEMBRANES BASED ON VINYLIDENE POLYFLUORIDE
US4670145A (en) 1986-07-08 1987-06-02 E. I. Du Pont De Nemours And Company Multiple bundle fluid separation apparatus
ES2014516A6 (en) 1986-07-11 1990-07-16 Mentec Ltd Cleaning of filters.
AU605187B2 (en) * 1986-09-04 1991-01-10 Memtec Limited Cleaning of hollow fibre filters
ATE72142T1 (en) 1986-09-12 1992-02-15 Memtec Ltd HOLLOW FIBER FILTER CARTRIDGE AND DISTRIBUTOR.
US5094750A (en) * 1986-09-12 1992-03-10 Memtec Limited Hollow fibre filter cartridge and header
NL8602402A (en) * 1986-09-23 1988-04-18 X Flow Bv METHOD FOR MANUFACTURING HYDROFILE MEMBRANES AND SIMILAR MEMBRANES
DE3636583A1 (en) 1986-10-28 1988-05-05 Draegerwerk Ag METHOD FOR PRODUCING A HOLLOW FIBER FABRIC EXCHANGE MODULE AND MODULE PRODUCED BY THIS METHOD
US5019260A (en) 1986-12-23 1991-05-28 Pall Corporation Filtration media with low protein adsorbability
US4846970A (en) 1987-06-22 1989-07-11 Osmonics, Inc. Cross-flow filtration membrane test unit
WO1989000879A1 (en) * 1987-07-30 1989-02-09 Toray Industries, Inc. Porous polymetrafluoroethylene membrane, separating apparatus using same, and process for their production
US4784771A (en) 1987-08-03 1988-11-15 Environmental Water Technology, Inc. Method and apparatus for purifying fluids
JPH01144409A (en) 1987-09-18 1989-06-06 Pennwalt Corp Hydrophylic sequence copolymer of vinylidene fluoride and n-alkylacrylamide and its production
US5221478A (en) 1988-02-05 1993-06-22 The Dow Chemical Company Chromatographic separation using ion-exchange resins
US4904426A (en) * 1988-03-31 1990-02-27 The Dow Chemical Company Process for the production of fibers from poly(etheretherketone)-type polymers
US5147553A (en) 1988-05-04 1992-09-15 Ionics, Incorporated Selectively permeable barriers
US4886601A (en) 1988-05-31 1989-12-12 Japan Organo Co., Ltd. Column filter using bundles of long fibers
US5075065A (en) 1988-08-01 1991-12-24 Chemical Fabrics Corporation Method for manufacturing of cast films at high productivity
US5043113A (en) 1988-08-05 1991-08-27 Hoechst Celanese Corp. Process for formation of halogenated polymeric microporous membranes having improved strength properties
DE3829766A1 (en) 1988-09-01 1990-03-22 Akzo Gmbh METHOD FOR PRODUCING MEMBRANES
US4963304A (en) 1988-09-26 1990-10-16 The Dow Chemical Company Process for preparing microporous membranes
US4999038A (en) * 1989-02-07 1991-03-12 Lundberg Bo E H Filter unit
DE3904544A1 (en) 1989-02-15 1990-08-16 Fraunhofer Ges Forschung POLYMINE MEMBRANES BASED ON POLYVINYLIDENE FLUORIDE, METHOD FOR THE PRODUCTION AND USE THEREOF
US5032282A (en) * 1989-04-14 1991-07-16 Aligena Ag Solvent-stable semipermeable composite membranes
NL8901090A (en) 1989-04-28 1990-11-16 X Flow Bv METHOD FOR MANUFACTURING A MICROPOROUS MEMBRANE AND SUCH MEMBRANE
US5005430A (en) * 1989-05-16 1991-04-09 Electric Power Research Institute, Inc. Automated membrane filter sampler
US5138870A (en) 1989-07-10 1992-08-18 Lyssy Georges H Apparatus for measuring water vapor permeability through sheet materials
DE3923128A1 (en) 1989-07-13 1991-01-24 Akzo Gmbh FLAX OR CAPILLARY MEMBRANE BASED ON A HOMOGENEOUS MIXTURE OF POLYVINYLIDE FLUORIDE AND OF A SECOND, BY CHEMICAL IMPROVEMENT, HYDROPHILIBLABLE POLYMERS
US5015275A (en) * 1989-07-14 1991-05-14 The Dow Chemical Company Isotropic microporous syndiotactic polystyrene membranes and processes for preparing the same
DE3926059C2 (en) 1989-08-07 1998-01-29 Basf Ag Phosphonomethylated polyvinylamines, process for their preparation and their use
DK438689D0 (en) * 1989-09-05 1989-09-05 Danisco HYDROPHIL MEMBRANE FOR USE BY ULTRAFILTRATION OR MICROFILTRATION AND PROCEDURES FOR PRODUCING THEREOF
DE69029850D1 (en) * 1989-09-29 1997-03-13 Memtec Ltd COLLECTION LINE FOR FILTER CARTRIDGES
US5227063A (en) 1989-10-03 1993-07-13 Zenon Environmental Inc. Tubular membrane module
US5079272A (en) * 1989-11-30 1992-01-07 Millipore Corporation Porous membrane formed from interpenetrating polymer network having hydrophilic surface
US5158721A (en) 1989-11-30 1992-10-27 Millipore Corporation Porous membrane formed from interpenetrating polymer network having hydrophilic surface
DE4007383C2 (en) 1990-03-08 1998-10-29 Seitz Filter Werke Manufacture of hydrophilic microfiltration membranes from polysulfones
US5066375A (en) 1990-03-19 1991-11-19 Ionics, Incorporated Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack
ES2126571T3 (en) * 1990-04-20 1999-04-01 Usf Filtration Limited MICROPOROUS MODULAR FILTER ASSEMBLIES.
US5017292A (en) * 1990-05-10 1991-05-21 Millipore Corporation Membrane, process and system for isolating virus from solution
US5049275A (en) 1990-06-15 1991-09-17 Hoechst Celanese Corp. Modified microporous structures
US5364527A (en) 1990-06-20 1994-11-15 Heinz Zimmermann Apparatus and process for treating water
DE4117281C2 (en) 1990-06-29 1996-02-22 Gore Enterprise Holdings Inc Hydrophilized, microporous membrane made of polytetrafluoroethylene and process for its production
US5104546A (en) * 1990-07-03 1992-04-14 Aluminum Company Of America Pyrogens separations by ceramic ultrafiltration
US5639373A (en) 1995-08-11 1997-06-17 Zenon Environmental Inc. Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate
US5248424A (en) 1990-08-17 1993-09-28 Zenon Environmental Inc. Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate
US5182019A (en) * 1990-08-17 1993-01-26 Zenon Environmental Inc. Cartridge of hybrid frameless arrays of hollow fiber membranes and module containing an assembly of cartridges
US5104535A (en) * 1990-08-17 1992-04-14 Zenon Environmental, Inc. Frameless array of hollow fiber membranes and module containing a stack of arrays
FR2666245B1 (en) 1990-08-31 1992-10-23 Lyonnaise Eaux METHOD FOR CONTROLLING THE OPERATING MODES OF AN AUTOMATIC WATER FILTRATION APPARATUS ON TUBULAR MEMBRANES.
JP2904564B2 (en) * 1990-08-31 1999-06-14 オルガノ株式会社 Method of scrubbing filtration tower using hollow fiber membrane
JP2858913B2 (en) 1990-09-26 1999-02-17 オルガノ株式会社 Filtration method using hollow fiber membrane
USH1045H (en) * 1990-11-19 1992-05-05 The United States Of America As Represented By The Secretary Of The Army Air bubble leak detection test device
US5069065A (en) 1991-01-16 1991-12-03 Mobil Oil Corporation Method for measuring wettability of porous rock
GB2253572B (en) 1991-02-11 1994-12-14 Aljac Engineering Limited Flow device in fluid circuits
JP3238399B2 (en) * 1991-03-06 2001-12-10 ザルトリウス アクチエンゲゼルシヤフト Method for modifying surface of molded article, molded article produced by the method and use thereof for separating adsorbable substances
DK0510328T3 (en) * 1991-03-07 1996-02-05 Kubota Kk Apparatus for treating activated sludge
FR2674448B1 (en) 1991-03-26 1994-03-25 Dumez Lyonnaise Eaux METHOD FOR CLEANING MESOPOROUS TUBULAR MEMBRANES OF ULTRAFILTRATION.
DE4113420A1 (en) 1991-04-25 1992-10-29 Bayer Ag Hollow polyacrylonitrile fibres, useful for membrane processes - mfd. by dry-wet or wet spinning from special spinning solns. contg. PAN and non-solvent etc., with simultaneous extrusion of core fluid
DE4117422C1 (en) 1991-05-28 1992-11-12 Willi Prof. Dr.-Ing. 7432 Bad Urach De Dettinger Monitoring contamination level of filter, partic. for hydraulic fluids - in which signal is produced which correlates with quotient of two pressure differences and evaluating device produces signal to change filter when quotient reaches given value
DE4119040C2 (en) 1991-06-10 1997-01-02 Pall Corp Method and device for testing the operating state of filter elements
US5211823A (en) 1991-06-19 1993-05-18 Millipore Corporation Process for purifying resins utilizing bipolar interface
US5137633A (en) 1991-06-26 1992-08-11 Millipore Corporation Hydrophobic membrane having hydrophilic and charged surface and process
JP3302992B2 (en) 1991-08-07 2002-07-15 ユーエスエフ フィルトレーション ピーティーワイ リミテッド Concentration of solids in suspension using hollow fiber membranes
EP0550798A1 (en) * 1991-10-04 1993-07-14 Kawasumi Laboratories, Inc. Polysulfone hollow fibre membrane
US5135663A (en) 1991-10-18 1992-08-04 Loctite Corporation Method of treating (meth)acrylic monomer-containing wastewater
US5137631A (en) 1991-10-22 1992-08-11 E. I. Du Pont De Nemours And Company Multiple bundle permeator
JPH05131124A (en) * 1991-11-11 1993-05-28 Nitto Denko Corp Production of hydrophilic fluoroplastic porous membrane
WO1993013489A1 (en) 1991-12-24 1993-07-08 Sierra Semiconductor Corporation An anti-aliasing method for polynomial curves using integer arithmetics
US5198116A (en) * 1992-02-10 1993-03-30 D.W. Walker & Associates Method and apparatus for measuring the fouling potential of membrane system feeds
DE69316325T2 (en) * 1992-02-12 1998-05-28 Mitsubishi Rayon Co HOLLOW FIBER MEMBRANE MODULE
US5411663A (en) 1992-03-20 1995-05-02 Micron Separations, Inc. Alcohol-insoluble nylon microporous membranes
DE69313574T2 (en) 1992-05-01 1998-01-08 Memtec Japan Ltd Device for checking the integrity of membrane filters
WO1993023152A1 (en) 1992-05-18 1993-11-25 Minntech Corporation Hollow fiber filter cartridge and method of manufacture
DE4217335C2 (en) 1992-05-26 1996-01-18 Seitz Filter Werke Hydrophilic membrane and process for its manufacture
US5269084A (en) 1992-07-07 1993-12-14 Saxon Incorporated Photographic greeting card
DE69305120T2 (en) * 1992-07-22 1997-03-06 Mitsubishi Rayon Co Hydrophobic, porous membranes, process for their preparation and their use
CA2100643A1 (en) * 1992-08-14 1994-02-15 Guido Sartori Fluorinated polyolefin membranes for aromatics/saturates separation
US5275766A (en) * 1992-10-30 1994-01-04 Corning Incorporate Method for making semi-permeable polymer membranes
EP0666774B1 (en) 1992-11-02 2000-09-06 USF Filtration Limited Hollow fibre module monitoring system
US5320760A (en) 1992-12-07 1994-06-14 E. I. Du Pont De Nemours And Company Method of determining filter pluggage by measuring pressures
US5288324A (en) * 1992-12-18 1994-02-22 Shaneyfelt Jack L Multi-color powder coat paint recovery apparatus
US5401401A (en) * 1993-01-13 1995-03-28 Aquaria Inc. Hang on tank canister filter
US5543465A (en) 1993-03-19 1996-08-06 Gambro Dialysatoren Gmbh & Co. Process for the production of hydrophilic membranes
US5389260A (en) * 1993-04-02 1995-02-14 Clack Corporation Brine seal for tubular filter
US5361625A (en) 1993-04-29 1994-11-08 Ylvisaker Jon A Method and device for the measurement of barrier properties of films against gases
US5297420A (en) * 1993-05-19 1994-03-29 Mobil Oil Corporation Apparatus and method for measuring relative permeability and capillary pressure of porous rock
FR2705734B1 (en) 1993-05-25 1995-06-30 Snecma Method and device for improving the safety of fluid filters.
US5419816A (en) 1993-10-27 1995-05-30 Halox Technologies Corporation Electrolytic process and apparatus for the controlled oxidation of inorganic and organic species in aqueous solutions
JP3586873B2 (en) * 1993-10-29 2004-11-10 株式会社パイオラックス Guide wire and its manufacturing method
US5354587A (en) 1993-11-15 1994-10-11 W. L. Gore & Associates, Inc. Hydrophilic compositions with increased thermal and solvent resistance
FR2713220B1 (en) * 1993-11-30 1996-03-08 Omnium Traitement Valorisa Installation of water purification with submerged filter membranes.
US5403479A (en) * 1993-12-20 1995-04-04 Zenon Environmental Inc. In situ cleaning system for fouled membranes
JP3160140B2 (en) 1993-12-22 2001-04-23 オルガノ株式会社 Filtration device using hollow fiber module
JPH07313850A (en) 1994-05-30 1995-12-05 Kubota Corp Method for backward washing immersion-type ceramic membrane separator
US5491023A (en) * 1994-06-10 1996-02-13 Mobil Oil Corporation Film composition
US5531900A (en) 1994-07-07 1996-07-02 University Of Arizona Modification of polyvinylidene fluoride membrane and method of filtering
JP3084292B2 (en) 1994-07-28 2000-09-04 ミリポア コーポレイション Porous composite membrane and method
US5451317A (en) 1994-09-08 1995-09-19 Kubota Corporation Solid-liquid separator
AUPM800694A0 (en) 1994-09-09 1994-10-06 Memtec Limited Cleaning of hollow fibre membranes
US5470469A (en) 1994-09-16 1995-11-28 E. I. Du Pont De Nemours And Company Hollow fiber cartridge
FR2726568B1 (en) 1994-11-08 1996-12-06 Atochem Elf Sa POLYMER MIXTURES COMPRISING A HALOGEN POLYMER AND COMPATIBILIZED BY A GRAFT ALIPHATIC POLYESTER
DE19503060A1 (en) 1995-02-01 1996-08-08 Henkel Ecolab Gmbh & Co Ohg Cleaning procedure for membrane filters
US6355730B1 (en) * 1995-06-30 2002-03-12 Toray Industries, Inc. Permselective membranes and methods for their production
US5906742A (en) 1995-07-05 1999-05-25 Usf Filtration And Separations Group Inc. Microfiltration membranes having high pore density and mixed isotropic and anisotropic structure
US5725769A (en) * 1995-07-18 1998-03-10 Bend Research, Inc. Solvent-resistant microporous polymide membranes
US6656356B2 (en) 1998-10-09 2003-12-02 Zenon Environmental Inc. Aerated immersed membrane system
US6193890B1 (en) * 1995-08-11 2001-02-27 Zenon Environmental Inc. System for maintaining a clean skein of hollow fibers while filtering suspended solids
DE03016134T1 (en) 1995-08-11 2004-05-19 Zenon Environmental Inc., Oakville Membrane module with freely vibrating hollow fiber membranes
US5944997A (en) 1995-08-11 1999-08-31 Zenon Environmental Inc. System for maintaining a clean skein of hollow fibers while filtering suspended solids
US6685832B2 (en) * 1995-08-11 2004-02-03 Zenon Environmental Inc. Method of potting hollow fiber membranes
RU2119817C1 (en) 1995-10-23 1998-10-10 Акционерное общество открытого типа "Полимерсинтез" Porous fluorocarbon membrane, method of its preparation, and cartridge filter based on this membrane
FR2741280B1 (en) * 1995-11-22 1997-12-19 Omnium Traitement Valorisa METHOD FOR CLEANING A FILTER SYSTEM OF THE SUBMERSIBLE MEMBRANE TYPE
US6074718A (en) 1996-02-06 2000-06-13 Koch Membrane Systems, Inc. Self supporting hollow fiber membrane and method of construction
US6077435A (en) 1996-03-15 2000-06-20 Usf Filtration And Separations Group Inc. Filtration monitoring and control system
EP0814116A1 (en) * 1996-06-19 1997-12-29 Hüls Aktiengesellschaft Hydrophilic coating of polymeric substrate surfaces
US6318555B1 (en) 1996-06-27 2001-11-20 Kimberly-Clark Worldwide, Inc. Flexible packaging bag with visual display feature
US5958243A (en) 1996-07-11 1999-09-28 Zenon Environmental Inc. Apparatus and method for membrane filtration with enhanced net flux
US5981614A (en) 1996-09-13 1999-11-09 Adiletta; Joseph G. Hydrophobic-oleophobic fluoropolymer compositions
USD390726S (en) * 1996-10-15 1998-02-17 Arvans Robert S Plate carrier
JP3686918B2 (en) 1996-10-16 2005-08-24 森村興産株式会社 Filtration device for solid-liquid separation of sewage, wastewater, etc.
USD396046S (en) 1996-10-24 1998-07-14 Allen Scheel Steer device for an outboard motor
AUPO412596A0 (en) 1996-12-10 1997-01-09 Memtec America Corporation Improved microporous membrane filtration assembly
US6045899A (en) * 1996-12-12 2000-04-04 Usf Filtration & Separations Group, Inc. Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters
WO1998028066A1 (en) 1996-12-20 1998-07-02 Usf Filtration And Separations Group, Inc. Scouring method
US6146747A (en) 1997-01-22 2000-11-14 Usf Filtration And Separations Group Inc. Highly porous polyvinylidene difluoride membranes
USD396726S (en) 1997-02-06 1998-08-04 Abc Group Combined air intake manifold and filter
US6048454A (en) * 1997-03-18 2000-04-11 Jenkins; Dan Oil filter pack and assembly
US6107397A (en) * 1997-03-24 2000-08-22 Basf Aktiengesellschaft Aqueous copolymer dispersions of water-soluble monomers with N-vinyl groups and hydrophobic monomers
AUPO709797A0 (en) * 1997-05-30 1997-06-26 Usf Filtration And Separations Group Inc. Predicting logarithmic reduction values
US6354444B1 (en) * 1997-07-01 2002-03-12 Zenon Environmental Inc. Hollow fiber membrane and braided tubular support therefor
US5914039A (en) * 1997-07-01 1999-06-22 Zenon Environmental Inc. Filtration membrane with calcined α-alumina particles therein
US6641733B2 (en) 1998-09-25 2003-11-04 U. S. Filter Wastewater Group, Inc. Apparatus and method for cleaning membrane filtration modules
US6083393A (en) 1997-10-27 2000-07-04 Pall Corporation Hydrophilic membrane
US6039872A (en) * 1997-10-27 2000-03-21 Pall Corporation Hydrophilic membrane
US6723758B2 (en) * 1997-11-12 2004-04-20 Ballard Power Systems Inc. Graft polymeric membranes and ion-exchange membranes formed therefrom
USD400890S (en) 1997-12-03 1998-11-10 Gambardella C Bruce Automotive manifold
JP3866399B2 (en) 1997-12-16 2007-01-10 住友重機械工業株式会社 Membrane filtration device and operation method thereof
US6838400B1 (en) * 1998-03-23 2005-01-04 International Business Machines Corporation UV absorbing glass cloth and use thereof
JP3682897B2 (en) * 1998-04-24 2005-08-17 東洋濾紙株式会社 High strength hydrophilic polyvinylidene fluoride porous membrane and method for producing the same
DE29906389U1 (en) 1998-04-30 1999-06-17 Cramer Weberei Heek Nienborg G Multi-layer textile building material
AU736329B2 (en) 1998-06-22 2001-07-26 Asahi Kasei Kabushiki Kaisha Porous polyvinylidene fluoride resin membrane and process for preparing the same
US6280626B1 (en) 1998-08-12 2001-08-28 Mitsubishi Rayon Co., Ltd. Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly
US6096213A (en) 1998-08-14 2000-08-01 3M Innovative Properties Company Puncture-resistant polyolefin membranes
TWI222895B (en) * 1998-09-25 2004-11-01 Usf Filtration & Separations Apparatus and method for cleaning membrane filtration modules
US6550747B2 (en) * 1998-10-09 2003-04-22 Zenon Environmental Inc. Cyclic aeration system for submerged membrane modules
CA2345682C (en) 1998-10-09 2009-01-13 Zenon Environmental Inc. Cyclic aeration system for submerged membrane modules
WO2000026334A1 (en) 1998-10-30 2000-05-11 Metrex Research Corporation Simultaneous cleaning and decontaminating compositions and methods
CA2290053C (en) 1999-11-18 2009-10-20 Zenon Environmental Inc. Immersed membrane module and process
WO2000030742A1 (en) * 1998-11-23 2000-06-02 Zenon Environmental Inc. Water filtration using immersed membranes
JP4107453B2 (en) 1998-11-26 2008-06-25 旭化成ケミカルズ株式会社 Hollow fiber membrane cartridge
US6156200A (en) 1998-12-08 2000-12-05 Usf Filtration & Separations Group, Inc. Gas-scrubbed hollow fiber membrane module
DE19959916A1 (en) * 1998-12-30 2000-07-20 Henkel Chile Sa Aqueous polymer dispersion, useful for adhesives and coatings, contains organic and/or inorganic filler particles and organic polymer particles that are formed in presence of at least one filler
JP3992438B2 (en) 1999-01-21 2007-10-17 株式会社荏原製作所 Ethylene-vinyl alcohol hollow fiber membrane
US6113794A (en) 1999-01-25 2000-09-05 Kumar; Ashwani Composite solvent resistant nanofiltration membranes
JP2000254459A (en) 1999-03-05 2000-09-19 Sumitomo Heavy Ind Ltd Method for washing solid-liquid separation element and solid-liquid separator
US6770202B1 (en) 1999-04-14 2004-08-03 Pall Corporation Porous membrane
AUPP985099A0 (en) 1999-04-20 1999-05-13 Usf Filtration And Separations Group Inc. Membrane filtration manifold system
US6322703B1 (en) 1999-04-20 2001-11-27 Asahi Kasei Kabushiki Kaisha Method for purifying aqueous suspension
US6221247B1 (en) * 1999-06-03 2001-04-24 Cms Technology Holdings, Inc. Dioxole coated membrane module for ultrafiltration or microfiltration of aqueous suspensions
JP2000342932A (en) 1999-06-04 2000-12-12 Mitsubishi Rayon Co Ltd Potting method for separation membrane
US6277512B1 (en) 1999-06-18 2001-08-21 3M Innovative Properties Company Polymer electrolyte membranes from mixed dispersions
US6214231B1 (en) * 1999-08-27 2001-04-10 Zenon Environmental Inc. System for operation of multiple membrane filtration assemblies
US6761013B2 (en) 1999-11-08 2004-07-13 Kimberly-Clark Worldwide, Inc. Packaging article and method
US6423784B1 (en) 1999-12-15 2002-07-23 3M Innovative Properties Company Acid functional fluoropolymer membranes and method of manufacture
CZ301401B6 (en) 1999-12-22 2010-02-17 Metabasis Therapeutics, Inc. Novel bisamidate-phosphonate prodrugs and pharmaceutical compositions in which the prodrugs are comprised
KR100752245B1 (en) 1999-12-28 2007-08-29 카나자와 히토시 Method of modifying polymeric material and use thereof
US6635179B1 (en) 1999-12-30 2003-10-21 Nephros, Inc. Sterile fluid filtration cartridge and method for using same
US6315895B1 (en) 1999-12-30 2001-11-13 Nephros, Inc. Dual-stage hemodiafiltration cartridge
USD478913S1 (en) 2000-02-24 2003-08-26 Usf Filtration And Separations Group, Inc. Manifold header
US6440303B2 (en) 2000-03-02 2002-08-27 Chapin Manufacturing, Inc. Fluid filter
AU3716101A (en) 2000-03-08 2001-09-17 Zenon Environmental Inc. Membrane module for gas transfer and membrane supported biofilm process
AUPQ680100A0 (en) 2000-04-10 2000-05-11 Usf Filtration And Separations Group Inc. Hollow fibre restraining system
US6337018B1 (en) * 2000-04-17 2002-01-08 The Dow Chemical Company Composite membrane and method for making the same
AU142387S (en) 2000-05-31 2000-11-27 Evoqua Water Tech Llc Manifold header cap
EP1166871A1 (en) 2000-06-21 2002-01-02 Fuji Photo Film B.V. Photocalytic sheet of film and its manufacturing process
JP2002034126A (en) * 2000-07-19 2002-01-31 Yazaki Corp Wiring unit
AUPR064800A0 (en) * 2000-10-09 2000-11-02 Usf Filtration And Separations Group Inc. Improved membrane filtration system
KR20020031017A (en) * 2000-10-21 2002-04-26 김우영 An automatic or manual opening and closing ventilating fan
AUPR094600A0 (en) 2000-10-23 2000-11-16 Usf Filtration And Separations Group Inc. Fibre membrane arrangement
AUPR143400A0 (en) * 2000-11-13 2000-12-07 Usf Filtration And Separations Group Inc. Modified membranes
WO2002038257A2 (en) 2000-11-13 2002-05-16 Mcmaster University Gas separation device
US6705465B2 (en) * 2000-11-15 2004-03-16 Kimberly-Clark Worldwide, Inc. Package for feminine care articles
MXPA01011393A (en) * 2000-11-30 2004-05-21 Rohm & Haas Redox system and process.
US20020078665A1 (en) 2000-12-21 2002-06-27 Salman Nabil Enrique Portable packaging device and method for forming individually packaged articles
ITMI20010421A1 (en) 2001-03-01 2002-09-02 Ausimont Spa SEMI-PERMEABLE SEMI-CRYSTALLINE FLUOROPOLYMER Porous MEMBRANES
US6596167B2 (en) * 2001-03-26 2003-07-22 Koch Membrane Systems, Inc. Hydrophilic hollow fiber ultrafiltration membranes that include a hydrophobic polymer and a method of making these membranes
JP4409112B2 (en) * 2001-03-30 2010-02-03 株式会社クラレ Method for producing polyvinyl acetate resin emulsion
AUPR421501A0 (en) 2001-04-04 2001-05-03 U.S. Filter Wastewater Group, Inc. Potting method
JP4192091B2 (en) 2001-04-27 2008-12-03 ミリポア・コーポレーシヨン Cross-linked multipolymer coating
US20040085300A1 (en) 2001-05-02 2004-05-06 Alec Matusis Device and method for selecting functions based on intrinsic finger features
US6595167B2 (en) * 2001-05-22 2003-07-22 Mtd Products Inc Internal combustion engine and method of making the same
AUPR584301A0 (en) 2001-06-20 2001-07-12 U.S. Filter Wastewater Group, Inc. Membrane polymer compositions
AUPR692401A0 (en) 2001-08-09 2001-08-30 U.S. Filter Wastewater Group, Inc. Method of cleaning membrane modules
US6721529B2 (en) * 2001-09-21 2004-04-13 Nexpress Solutions Llc Release agent donor member having fluorocarbon thermoplastic random copolymer overcoat
JP4426163B2 (en) * 2001-10-02 2010-03-03 ユニ・チャーム株式会社 Individual package for absorbent articles and method for producing the same
JP3770145B2 (en) * 2001-10-23 2006-04-26 東レ株式会社 Method for producing semipermeable membrane and dialyzer using the semipermeable membrane
US6790912B2 (en) 2001-12-11 2004-09-14 3M Innovative Properties Company Extrudable fluoropolymer blends
US6890435B2 (en) 2002-01-28 2005-05-10 Koch Membrane Systems Hollow fiber microfiltration membranes and a method of making these membranes
US7247238B2 (en) 2002-02-12 2007-07-24 Siemens Water Technologies Corp. Poly(ethylene chlorotrifluoroethylene) membranes
US6811696B2 (en) 2002-04-12 2004-11-02 Pall Corporation Hydrophobic membrane materials for filter venting applications
US6851259B2 (en) * 2002-06-12 2005-02-08 The Aerospace Corporation Inflatable ablation gas cell structure system
US6994867B1 (en) * 2002-06-21 2006-02-07 Advanced Cardiovascular Systems, Inc. Biocompatible carrier containing L-arginine
DE10228148B4 (en) * 2002-06-24 2006-08-24 Saehan Industries Inc. Selective membrane with high fouling resistance
AU2003301399B2 (en) * 2002-10-18 2006-07-06 Asahi Kasei Medical Co., Ltd. Microporous hydrophilic membrane
US20040092901A1 (en) 2002-11-11 2004-05-13 Ronald Wayne Reece Diaper changing kit
FR2850297B1 (en) * 2003-01-29 2005-04-15 Aquasource METHOD FOR MANUFACTURING MEMBRANES FOR FILTRATION MODULES, IN PARTICULAR FOR THE TREATMENT OF WATER
JP2004230280A (en) 2003-01-30 2004-08-19 Toray Ind Inc Production method for hydrophilic polyvinylidene fluoride-based resin porous membrane
US20040167489A1 (en) 2003-02-14 2004-08-26 Kellenberger Stanley R. Compact absorbent article
US20040159584A1 (en) 2003-02-18 2004-08-19 Ke Liu Mini-CPO providing hydrogen for hydrogen desulfurization of hydrocarbon feeds
US20040167493A1 (en) 2003-02-21 2004-08-26 Sca Hygiene Products Ab Arrangement and method for applying elastic element to a material web
ATE302243T1 (en) * 2003-02-28 2005-09-15 3M Innovative Properties Co FLUOROPOLYMER DISPERSION CONTAINING NO OR LITTLE LOW MOLECULAR WEIGHT FLUORINE-CONTAINING WETTING AGENT
US20050131368A2 (en) 2003-03-04 2005-06-16 Diaperoos, Llc Vacuum-packed diaper
CA2518948A1 (en) 2003-03-13 2004-09-23 Kureha Chemical Industry Company, Limited Porous membrane of vinylidene fluoride resin and process for producing the same
US7067058B2 (en) * 2003-04-01 2006-06-27 3M Innovative Properties Company Hydrophilic membrane and process for making the same
CN1552507A (en) 2003-05-27 2004-12-08 天津膜天膜工程技术有限公司 Method and apparatus for primary shaping composite or modified hollow fibre membrane
WO2005005028A1 (en) 2003-07-04 2005-01-20 Akzo Nobel N.V. Cleaning of filtration membranes with peroxides
AU2003903507A0 (en) 2003-07-08 2003-07-24 U. S. Filter Wastewater Group, Inc. Membrane post-treatment
US20050015052A1 (en) * 2003-07-17 2005-01-20 Michelle Klippen Compression packed absorbent article
US20050063895A1 (en) 2003-09-23 2005-03-24 Martin Perry L. Production of potassium monopersulfate triple salt using oleum
US20050142280A1 (en) * 2003-10-20 2005-06-30 Kim Kwon I. System and method for synthesizing a polymer membrane
ATE529451T1 (en) 2003-11-17 2011-11-15 3M Innovative Properties Co AQUEOUS PTFE DISPERSIONS WITH A LOW CONTENT OF FLUORINATED EMULSIFIERS
JP4533618B2 (en) 2003-11-25 2010-09-01 アムテック株式会社 Disinfectant cleaning composition
KR100562050B1 (en) 2004-03-30 2006-03-17 한국화학연구원 New crosslinked polyvinyl alcohol-based membranes and their Preparation Process
US8524794B2 (en) 2004-07-05 2013-09-03 Siemens Industry, Inc. Hydrophilic membranes
US7537718B2 (en) 2004-10-13 2009-05-26 3M Innovative Properties Company Hydrophilic polyethersulfone membrane and method for preparing same
EP1662268A1 (en) 2004-11-30 2006-05-31 "VLAAMSE INSTELLING VOOR TECHNOLOGISCH ONDERZOEK", afgekort "V.I.T.O." System and method for measuring fuel cell voltage
ATE511915T1 (en) 2004-12-03 2011-06-15 Siemens Industry Inc MEMBRANE AFTERTREATMENT
AU2005312347B2 (en) 2004-12-03 2010-03-25 Evoqua Water Technologies Llc Membrane post treatment

Also Published As

Publication number Publication date
EP1827664A4 (en) 2008-07-30
US7867417B2 (en) 2011-01-11
ATE511915T1 (en) 2011-06-15
MY141919A (en) 2010-07-30
EP1827664A1 (en) 2007-09-05
CN101084057B (en) 2013-10-23
ES2365928T3 (en) 2011-10-13
NZ555302A (en) 2010-11-26
US20090230053A1 (en) 2009-09-17
CN101084057A (en) 2007-12-05
WO2006058384A1 (en) 2006-06-08
EP1827664B1 (en) 2011-06-08
KR20070089981A (en) 2007-09-04
JP2008521598A (en) 2008-06-26

Similar Documents

Publication Publication Date Title
CA2588675A1 (en) Membrane post treatment
JP2008521598A5 (en)
US5871823A (en) Hydrophilic coating of surfaces of polymeric substrates
CN105363359B (en) A kind of cross-linking type lotus positive electricity chlorine-containing polymer filter membrane and preparation method thereof
JP3334934B2 (en) Hydrophobic polymer composite membrane
EP2705897B1 (en) Electron beam induced modification of membranes by polymers
Zhu et al. Tethering hydrophilic polymer brushes onto PPESK membranes via surface-initiated atom transfer radical polymerization
WO2006135966A1 (en) Cross linking treatment of polymer membranes
Yu et al. Flux enhancement for polypropylene microporous membrane in a SMBR by the immobilization of poly (N-vinyl-2-pyrrolidone) on the membrane surface
WO2017170210A1 (en) Surface-modified porous film and production method for same
JP6464866B2 (en) Surface-modified substrate, polymer-coated substrate, and production method thereof
US6632361B2 (en) Shaped objects for pyrogen retention and processes for their manufacture
CN110124537A (en) The preparation method of composite polysulfone membrane and its purposes in marine culture wastewater processing
JPH05115760A (en) Antibacterial hydrophilic porous membrane and production thereof
CN106632922B (en) The method of the preparation method and its modified polyvinilidene fluoride microfiltration membranes of block polymer containing hydrophilic segment
AU2005312347B2 (en) Membrane post treatment
CA2066119C (en) Heat-resisting porous membrane, hydrophilized heat-resisting porous membrane and production processes thereof
EP2561923A1 (en) Graft copolymers
JP6855797B2 (en) Surface-modified porous membrane and its manufacturing method
JP2004154613A (en) Manufacturing method of functional porous membrane
WO2000045943A1 (en) Porous medium having a plasma polymerized surface
WO2009067087A1 (en) Hydrophilization of permeable hydrophobic polymer membranes
CN117679961A (en) Method for pore diameter regulation and modification of uniform pore membrane by utilizing visible light induced grafting
JPH10337453A (en) Semipermeable membrane and its production
WO2020003216A1 (en) Uv-grafting process for polymeric flat-sheet membranes

Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued

Effective date: 20130510