DE69412647T2 - In situ reinigungssystem für verunreinigte membranen - Google Patents
In situ reinigungssystem für verunreinigte membranenInfo
- Publication number
- DE69412647T2 DE69412647T2 DE69412647T DE69412647T DE69412647T2 DE 69412647 T2 DE69412647 T2 DE 69412647T2 DE 69412647 T DE69412647 T DE 69412647T DE 69412647 T DE69412647 T DE 69412647T DE 69412647 T2 DE69412647 T2 DE 69412647T2
- Authority
- DE
- Germany
- Prior art keywords
- permeate
- membrane
- pressure
- flow rate
- biocidal
- 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.)
- Expired - Fee Related
Links
- 239000012528 membrane Substances 0.000 title claims description 93
- 238000004140 cleaning Methods 0.000 title claims description 72
- 239000000835 fiber Substances 0.000 claims description 77
- 239000012466 permeate Substances 0.000 claims description 71
- 230000003115 biocidal effect Effects 0.000 claims description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 239000011148 porous material Substances 0.000 claims description 33
- 239000012530 fluid Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 23
- 239000000758 substrate Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 19
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 18
- 241000894006 Bacteria Species 0.000 claims description 17
- 239000000356 contaminant Substances 0.000 claims description 17
- 239000003792 electrolyte Substances 0.000 claims description 17
- 230000001590 oxidative effect Effects 0.000 claims description 16
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 16
- 238000009826 distribution Methods 0.000 claims description 10
- 238000011109 contamination Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- -1 polypropylene Polymers 0.000 claims description 9
- 239000012510 hollow fiber Substances 0.000 claims description 8
- 238000000108 ultra-filtration Methods 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 claims description 7
- 229920002492 poly(sulfone) Polymers 0.000 claims description 7
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 150000001450 anions Chemical class 0.000 claims description 6
- 230000001580 bacterial effect Effects 0.000 claims description 6
- 239000002609 medium Substances 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 5
- 238000001471 micro-filtration Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 239000008213 purified water Substances 0.000 claims description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- 241001148470 aerobic bacillus Species 0.000 claims description 4
- 239000012736 aqueous medium Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 150000001768 cations Chemical class 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 230000003134 recirculating effect Effects 0.000 claims description 3
- 235000002639 sodium chloride Nutrition 0.000 claims description 3
- 230000035899 viability Effects 0.000 claims description 3
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 2
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 6
- 239000011368 organic material Substances 0.000 claims 3
- 229920003002 synthetic resin Polymers 0.000 claims 2
- 239000000057 synthetic resin Substances 0.000 claims 2
- 230000002411 adverse Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 235000015165 citric acid Nutrition 0.000 claims 1
- 239000000470 constituent Substances 0.000 claims 1
- 235000011167 hydrochloric acid Nutrition 0.000 claims 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims 1
- 239000011236 particulate material Substances 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 239000000243 solution Substances 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910019093 NaOCl Inorganic materials 0.000 description 10
- 239000003139 biocide Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 230000035515 penetration Effects 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- 238000001223 reverse osmosis Methods 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000003673 groundwater Substances 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000002791 soaking Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 5
- 238000003491 array Methods 0.000 description 5
- 238000011001 backwashing Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 235000010216 calcium carbonate Nutrition 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000010840 domestic wastewater Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 235000013980 iron oxide Nutrition 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000002147 killing effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 101000916532 Rattus norvegicus Zinc finger and BTB domain-containing protein 38 Proteins 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 229910003480 inorganic solid Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000012465 retentate Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/168—Use of other chemical agents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/170,053 US5403479A (en) | 1993-12-20 | 1993-12-20 | In situ cleaning system for fouled membranes |
| PCT/CA1994/000691 WO1995017241A1 (en) | 1993-12-20 | 1994-12-19 | In situ cleaning system for fouled membranes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69412647D1 DE69412647D1 (de) | 1998-09-24 |
| DE69412647T2 true DE69412647T2 (de) | 1999-04-01 |
Family
ID=22618357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69412647T Expired - Fee Related DE69412647T2 (de) | 1993-12-20 | 1994-12-19 | In situ reinigungssystem für verunreinigte membranen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5403479A (enExample) |
| EP (1) | EP0738180B1 (enExample) |
| AU (1) | AU1269795A (enExample) |
| DE (1) | DE69412647T2 (enExample) |
| TW (1) | TW259726B (enExample) |
| WO (1) | WO1995017241A1 (enExample) |
Families Citing this family (133)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| KR0154384B1 (ko) * | 1995-07-03 | 1998-10-15 | 박원훈 | 중공사 막을 사용하는 수처리 장치 |
| US7087173B2 (en) * | 1995-08-11 | 2006-08-08 | Zenon Environmental Inc. | Inverted cavity aerator for membrane module |
| US8852438B2 (en) * | 1995-08-11 | 2014-10-07 | Zenon Technology Partnership | Membrane filtration module with adjustable header spacing |
| US20040238432A1 (en) * | 1995-08-11 | 2004-12-02 | Mailvaganam Mahendran | Membrane filtration module with adjustable header spacing |
| DE69632422T2 (de) * | 1995-08-11 | 2005-05-19 | Zenon Environmental Inc., Oakville | Verfahren zum Einbetten von Hohlfaser-Membranen |
| FR2741280B1 (fr) * | 1995-11-22 | 1997-12-19 | Omnium Traitement Valorisa | Procede de nettoyage d'une installation de filtration du type a membranes immergees |
| WO1998028066A1 (en) * | 1996-12-20 | 1998-07-02 | Usf Filtration And Separations Group, Inc. | Scouring method |
| US20040232076A1 (en) * | 1996-12-20 | 2004-11-25 | Fufang Zha | Scouring method |
| JP3429148B2 (ja) * | 1996-12-27 | 2003-07-22 | 株式会社荏原製作所 | 浸漬型中空糸分離膜モジュール及びその製造方法 |
| US6120688A (en) * | 1997-02-25 | 2000-09-19 | Zenon Environmental, Inc. | Portable reverse osmosis unit for producing drinking water |
| US6027572A (en) * | 1997-06-23 | 2000-02-22 | Princeton Trade And Technologt, Inc | Cleaning method for removing biofilm and debris from lines and tubing |
| US6641733B2 (en) * | 1998-09-25 | 2003-11-04 | U. S. Filter Wastewater Group, Inc. | Apparatus and method for cleaning membrane filtration modules |
| WO2000003793A1 (en) * | 1998-07-14 | 2000-01-27 | Desalination Systems, Inc. | Cleaning fouled membranes |
| 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 |
| TWI222895B (en) | 1998-09-25 | 2004-11-01 | Usf Filtration & Separations | Apparatus and method for cleaning membrane filtration modules |
| US20040007527A1 (en) * | 1998-11-23 | 2004-01-15 | Zenon Environmental Inc. | Membrane filtration device and process |
| ATE292511T1 (de) * | 1998-11-23 | 2005-04-15 | Zenon Environmental Inc | Wasserfiltration mittels unterwassermembranen |
| US6156200A (en) * | 1998-12-08 | 2000-12-05 | Usf Filtration & Separations Group, Inc. | Gas-scrubbed hollow fiber membrane module |
| WO2000048943A1 (en) * | 1999-02-18 | 2000-08-24 | Beall Timothy A | Reverse osmosis system with biological contamination prevention |
| US6322703B1 (en) | 1999-04-20 | 2001-11-27 | Asahi Kasei Kabushiki Kaisha | Method for purifying aqueous suspension |
| AUPP985099A0 (en) * | 1999-04-20 | 1999-05-13 | Usf Filtration And Separations Group Inc. | Membrane filtration manifold system |
| US6331251B1 (en) * | 1999-06-10 | 2001-12-18 | Envirogen, Inc. | System and method for withdrawing permeate through a filter and for cleaning the filter in situ |
| US6627082B2 (en) * | 1999-06-10 | 2003-09-30 | Envirogen, Inc. | System and method for withdrawing permeate through a filter and for cleaning the filter in situ |
| US6303035B1 (en) | 1999-07-30 | 2001-10-16 | Zenon Environmental Inc. | Immersed membrane filtration process |
| AU6257000A (en) * | 1999-07-29 | 2001-02-19 | Zenon Environmental Inc. | Chemical cleaning backwash for immersed filtering membranes |
| US6547968B1 (en) | 1999-07-30 | 2003-04-15 | Zenon Environmental Inc. | Pulsed backwash for immersed membranes |
| US20050178729A1 (en) * | 1999-07-30 | 2005-08-18 | Rabie Hamid R. | Maintenance cleaning for membranes |
| US20010052494A1 (en) * | 1999-10-25 | 2001-12-20 | Pierre Cote | Chemical cleaning backwash for normally immersed membranes |
| US20040007525A1 (en) * | 1999-07-30 | 2004-01-15 | Rabie Hamid R. | Maintenance cleaning for membranes |
| US6214231B1 (en) * | 1999-08-27 | 2001-04-10 | Zenon Environmental Inc. | System for operation of multiple membrane filtration assemblies |
| AUPQ680100A0 (en) * | 2000-04-10 | 2000-05-11 | Usf Filtration And Separations Group Inc. | Hollow fibre restraining system |
| US6387262B1 (en) * | 2000-06-05 | 2002-05-14 | Northwestern University | Hollow-fiber membrane biofilm reactor for autohydrogenotrophic treatment of water |
| DE10045227C1 (de) * | 2000-09-13 | 2002-02-07 | Vosenkaul Klaus | Membranfilter für die Wasseraufbereitung |
| AUPR064800A0 (en) * | 2000-10-09 | 2000-11-02 | Usf Filtration And Separations Group Inc. | Improved membrane filtration system |
| US6706171B2 (en) | 2000-10-12 | 2004-03-16 | Biochem Technology, Inc. | Systems for treating wastewater in a series of filter-containing tanks |
| 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 |
| AUPR421501A0 (en) | 2001-04-04 | 2001-05-03 | U.S. Filter Wastewater Group, Inc. | Potting method |
| 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 |
| AUPR774201A0 (en) * | 2001-09-18 | 2001-10-11 | U.S. Filter Wastewater Group, Inc. | High solids module |
| DE60213184T2 (de) * | 2001-11-16 | 2007-06-28 | U.S. Filter Wastewater Group, Inc. | Methode zur Reinigung von Membranen |
| CN100518908C (zh) * | 2002-01-09 | 2009-07-29 | 美国海德能公司 | 用于改进空心纤维薄膜的过滤性能的方法 |
| US7247238B2 (en) | 2002-02-12 | 2007-07-24 | Siemens Water Technologies Corp. | Poly(ethylene chlorotrifluoroethylene) membranes |
| AUPS300602A0 (en) | 2002-06-18 | 2002-07-11 | U.S. Filter Wastewater Group, Inc. | Methods of minimising the effect of integrity loss in hollow fibre membrane modules |
| DE10237082B4 (de) * | 2002-08-09 | 2014-12-31 | Sartorius Stedim Biotech Gmbh | Verfahren und Vorrichtung zur biotechnologischen Herstellung von Wertstoffen |
| US8147699B2 (en) * | 2002-08-21 | 2012-04-03 | Hpd, Llc | Monolith filter apparatus and membrane apparatus, and method using same |
| JP2005537920A (ja) * | 2002-09-04 | 2005-12-15 | バイオラブ、インコーポレーテッド | 逆浸透メンブランの消毒 |
| KR101002466B1 (ko) | 2002-10-10 | 2010-12-17 | 지멘스 워터 테크놀로지스 코포레이션 | 역세척 방법 |
| AU2002953111A0 (en) | 2002-12-05 | 2002-12-19 | U. S. Filter Wastewater Group, Inc. | Mixing chamber |
| IL157581A (en) * | 2003-01-09 | 2004-08-31 | Ide Technologies Ltd | Direct osmosis membrane cleaning |
| DE10301860A1 (de) * | 2003-01-17 | 2004-07-29 | Puron Ag | Membrananlage und Verfahren zur permeatseitigen Reinigung dieser Anlage |
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1993
- 1993-12-20 US US08/170,053 patent/US5403479A/en not_active Expired - Fee Related
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1994
- 1994-12-19 WO PCT/CA1994/000691 patent/WO1995017241A1/en not_active Ceased
- 1994-12-19 DE DE69412647T patent/DE69412647T2/de not_active Expired - Fee Related
- 1994-12-19 EP EP95903730A patent/EP0738180B1/en not_active Expired - Lifetime
- 1994-12-19 AU AU12697/95A patent/AU1269795A/en not_active Abandoned
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1995
- 1995-01-25 TW TW084100631A patent/TW259726B/zh active
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| Publication number | Publication date |
|---|---|
| US5403479A (en) | 1995-04-04 |
| AU1269795A (en) | 1995-07-10 |
| WO1995017241A1 (en) | 1995-06-29 |
| TW259726B (enExample) | 1995-10-11 |
| EP0738180A1 (en) | 1996-10-23 |
| EP0738180B1 (en) | 1998-08-19 |
| DE69412647D1 (de) | 1998-09-24 |
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