AU709121B2 - Method for minimizing wastewater discharge - Google Patents
Method for minimizing wastewater discharge Download PDFInfo
- Publication number
- AU709121B2 AU709121B2 AU17103/97A AU1710397A AU709121B2 AU 709121 B2 AU709121 B2 AU 709121B2 AU 17103/97 A AU17103/97 A AU 17103/97A AU 1710397 A AU1710397 A AU 1710397A AU 709121 B2 AU709121 B2 AU 709121B2
- Authority
- AU
- Australia
- Prior art keywords
- bed
- rinse
- cation
- exchange bed
- anion
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims abstract description 76
- 239000002351 wastewater Substances 0.000 title claims abstract description 34
- 238000011069 regeneration method Methods 0.000 claims abstract description 207
- 230000008929 regeneration Effects 0.000 claims abstract description 205
- 239000012492 regenerant Substances 0.000 claims abstract description 181
- 238000005341 cation exchange Methods 0.000 claims abstract description 158
- 238000006073 displacement reaction Methods 0.000 claims abstract description 158
- 238000005349 anion exchange Methods 0.000 claims abstract description 149
- 238000005342 ion exchange Methods 0.000 claims abstract description 46
- 150000001768 cations Chemical class 0.000 claims description 113
- 239000002253 acid Substances 0.000 claims description 101
- 150000001450 anions Chemical class 0.000 claims description 71
- 239000011347 resin Substances 0.000 claims description 70
- 229920005989 resin Polymers 0.000 claims description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- 230000001172 regenerating effect Effects 0.000 claims description 27
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 25
- 238000010926 purge Methods 0.000 claims description 15
- 238000011001 backwashing Methods 0.000 claims description 14
- 230000003134 recirculating effect Effects 0.000 claims description 9
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 7
- 239000003957 anion exchange resin Substances 0.000 claims description 6
- 239000003729 cation exchange resin Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 239000012141 concentrate Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 abstract description 64
- 239000002699 waste material Substances 0.000 abstract description 61
- 239000000243 solution Substances 0.000 description 132
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 42
- 230000008569 process Effects 0.000 description 31
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 150000002739 metals Chemical class 0.000 description 11
- 239000012670 alkaline solution Substances 0.000 description 10
- 230000009467 reduction Effects 0.000 description 10
- 238000011282 treatment Methods 0.000 description 10
- 239000011324 bead Substances 0.000 description 9
- 238000002242 deionisation method Methods 0.000 description 9
- 230000000750 progressive effect Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- -1 hydroxyl ions Chemical class 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- 238000011045 prefiltration Methods 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000003518 caustics Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000003716 rejuvenation Effects 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005115 demineralization Methods 0.000 description 3
- 230000002328 demineralizing effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000005465 channeling Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000012508 resin bead Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000013056 hazardous product Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/04—Processes using organic exchangers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/05—Regeneration or reactivation of ion-exchangers; Apparatus therefor of fixed beds
- B01J49/08—Regeneration or reactivation of ion-exchangers; Apparatus therefor of fixed beds containing cationic and anionic exchangers in separate beds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Removal Of Specific Substances (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/592,803 US5718828A (en) | 1996-01-26 | 1996-01-26 | Method for minimizing wastewater discharge |
| US08/592803 | 1996-01-26 | ||
| PCT/US1997/001210 WO1997026992A1 (en) | 1996-01-26 | 1997-01-24 | Method and apparatus for minimizing wastewater discharge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1710397A AU1710397A (en) | 1997-08-20 |
| AU709121B2 true AU709121B2 (en) | 1999-08-19 |
Family
ID=24372132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU17103/97A Ceased AU709121B2 (en) | 1996-01-26 | 1997-01-24 | Method for minimizing wastewater discharge |
Country Status (11)
| Country | Link |
|---|---|
| US (2) | US5718828A (enExample) |
| EP (1) | EP0879085B1 (enExample) |
| JP (1) | JP2000503889A (enExample) |
| KR (1) | KR100461764B1 (enExample) |
| CN (1) | CN1117634C (enExample) |
| AT (1) | ATE347933T1 (enExample) |
| AU (1) | AU709121B2 (enExample) |
| CA (1) | CA2243978A1 (enExample) |
| DE (1) | DE69737090T2 (enExample) |
| IL (1) | IL125363A0 (enExample) |
| WO (1) | WO1997026992A1 (enExample) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2197525A1 (en) * | 1996-02-14 | 1997-08-15 | Mahabala R. Adiga | Plating waste water treatment and metals recovery method |
| US5951874A (en) * | 1997-07-25 | 1999-09-14 | Hydromatix, Inc. | Method for minimizing wastewater discharge |
| US6776913B1 (en) | 1999-07-20 | 2004-08-17 | Juzer Jangbarwala | Water softening method and apparatus for use therewith |
| US6878258B2 (en) * | 2002-02-11 | 2005-04-12 | Applied Materials, Inc. | Apparatus and method for removing contaminants from semiconductor copper electroplating baths |
| US7273555B2 (en) * | 2003-05-30 | 2007-09-25 | Severn Trent Services, Inc. | Process for continuous ion exchange |
| US7132052B2 (en) * | 2003-12-11 | 2006-11-07 | General Electric Company | System for the purification and reuse of spent brine in a water softener |
| US7057506B2 (en) * | 2004-01-16 | 2006-06-06 | Hewlett-Packard Development Company, L.P. | Cooling fluid provisioning with location aware sensors |
| US7846338B2 (en) * | 2006-11-22 | 2010-12-07 | Amalgamated Research, Inc. | Ion exchange process |
| JP5770004B2 (ja) * | 2011-04-06 | 2015-08-26 | 株式会社ディスコ | 加工廃液処理装置 |
| US8961770B2 (en) | 2011-10-27 | 2015-02-24 | Pentair Residential Filtration, Llc | Controller and method of operation of a capacitive deionization system |
| US9695070B2 (en) | 2011-10-27 | 2017-07-04 | Pentair Residential Filtration, Llc | Regeneration of a capacitive deionization system |
| US9010361B2 (en) | 2011-10-27 | 2015-04-21 | Pentair Residential Filtration, Llc | Control valve assembly |
| US9637397B2 (en) | 2011-10-27 | 2017-05-02 | Pentair Residential Filtration, Llc | Ion removal using a capacitive deionization system |
| US8671985B2 (en) | 2011-10-27 | 2014-03-18 | Pentair Residential Filtration, Llc | Control valve assembly |
| CN103255419A (zh) * | 2012-02-15 | 2013-08-21 | 库特勒自动化系统(苏州)有限公司 | 光电池湿制程中废物体系的回收系统及回收方法 |
| US10029249B1 (en) | 2014-07-25 | 2018-07-24 | Baker Hughes, A Ge Company, Llc | System and method for ion exchange regeneration |
| TWI519349B (zh) * | 2014-10-22 | 2016-02-01 | 友特貿易有限公司 | 一種利用壓縮空氣以減少再生液及廢水之設備及其方法 |
| CN105413762B (zh) * | 2015-12-15 | 2018-08-24 | 中国大唐集团科学技术研究院有限公司华东分公司 | 凝结水精处理再生系统阳再生塔内树脂输出系统及方法 |
| CN108128950A (zh) * | 2017-10-11 | 2018-06-08 | 盐城市凌意环保科技有限公司 | 一种h酸废水的处理装置及其处理方法 |
| SG11202005788RA (en) * | 2017-12-22 | 2020-07-29 | Ozono Polaris S A De C V | Process and system for back-and-forth washing of adsorptive media |
| US11952294B2 (en) * | 2018-08-01 | 2024-04-09 | Enviropacific Services Limited | System and process for removing polyfluorinated pollutants from water |
| WO2020163533A1 (en) * | 2019-02-05 | 2020-08-13 | Arizona Board Of Regents On Behalf Of Arizona State University | System and method of water rejuvenation for the regeneration of sorbent filters |
| CN110668543B (zh) * | 2019-10-24 | 2022-03-11 | 浙江新中港热电股份有限公司 | 一种离子交换再生废水的回收系统及处理工艺 |
| CN115504541B (zh) * | 2022-09-14 | 2024-02-27 | 西安热工研究院有限公司 | 凝结水精处理系统离子交换树脂定位方法和装置 |
| JP7593448B1 (ja) | 2023-08-03 | 2024-12-03 | 栗田工業株式会社 | 上向流式イオン交換塔の運転方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5269936A (en) * | 1989-10-16 | 1993-12-14 | Johannesburg Consolidated Investment Co. | Process for treating ion exchange resin |
| US5352345A (en) * | 1991-05-07 | 1994-10-04 | Alliedsignal Inc. | Ion exchange resin regenerant waste recovery and recycling via bipolar membranes |
| US5407564A (en) * | 1993-01-25 | 1995-04-18 | Turf Industries, Inc. | Closed loop liquid treatment and recycling system |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE510506A (enExample) * | 1951-04-12 | |||
| US2938868A (en) * | 1955-03-11 | 1960-05-31 | Infilco Inc | Method of controlling regeneration of ion exchangers and apparatus |
| DE1642805B2 (de) * | 1967-05-27 | 1976-09-02 | Dynamit Nobel Ag, 5210 Troisdorf | Verfahren zur durchfuehrung des ionenaustausches |
| US3531401A (en) * | 1968-01-23 | 1970-09-29 | Crane Co | Method of regenerating ion exchangers |
| US3455819A (en) * | 1968-04-01 | 1969-07-15 | Crane Co | Method for scrubbing ion exchange resins |
| US3985648A (en) * | 1974-06-27 | 1976-10-12 | Almag Pollution Control Corporation | Method and system for purifying liquid |
| DE2652164C2 (de) * | 1976-11-16 | 1986-05-28 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Verfahren zur Minimierung organischer Abfallstoffe aus wäßrigen Produkt- und Raffinat-Strömen von Flüssig-flüssig-Extraktionsprozessen |
| DE2732927C2 (de) * | 1977-07-21 | 1979-04-12 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig, 8510 Fuerth | Verfahren zur Aussonderung von Verunreinigungen aus einem stromlosen Metallisierungsbad |
| JPS6034704B2 (ja) * | 1977-12-07 | 1985-08-10 | 日立電線株式会社 | 多心ケ−ブルの混線試験方法および装置 |
| US4176056A (en) * | 1978-04-27 | 1979-11-27 | Pennwalt Corporation | Cyclic operation of a bed of mixed ion exchange resins |
| DE3005249A1 (de) * | 1980-02-13 | 1981-08-20 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren zum regenieren von austauscherharzen |
| US4427549A (en) * | 1982-08-19 | 1984-01-24 | Kinetico, Inc. | Deionization method and apparatus |
| US4652352A (en) * | 1985-11-04 | 1987-03-24 | Saieva Carl J | Process and apparatus for recovering metals from dilute solutions |
| US4824575A (en) * | 1987-06-22 | 1989-04-25 | Schlossel Richard H | Metal-containing waste water treatment and metal recovery process |
| GB8817083D0 (en) * | 1988-07-18 | 1988-08-24 | Solt G S | Improved method of ion exchange & apparatus for carrying out said method |
| US5066371A (en) * | 1989-02-24 | 1991-11-19 | Metanetix, Inc. | Removal of contaminants and recovery of metals from waste solutions |
| US5013449A (en) * | 1989-05-26 | 1991-05-07 | The Dow Chemical Company | Process for solute recovery utilizing recycle liquids having a stored concentration profile |
| US5156825A (en) * | 1990-09-26 | 1992-10-20 | Amp Incorporated | Adsorption and elution of metal from ion exchange resin |
| US5415765A (en) * | 1993-04-07 | 1995-05-16 | Kinetico Engineered Systems, Inc. | Water treatment system |
-
1996
- 1996-01-26 US US08/592,803 patent/US5718828A/en not_active Expired - Lifetime
-
1997
- 1997-01-23 US US08/787,691 patent/US5776340A/en not_active Expired - Lifetime
- 1997-01-24 JP JP9527049A patent/JP2000503889A/ja not_active Ceased
- 1997-01-24 WO PCT/US1997/001210 patent/WO1997026992A1/en not_active Ceased
- 1997-01-24 DE DE69737090T patent/DE69737090T2/de not_active Expired - Lifetime
- 1997-01-24 AU AU17103/97A patent/AU709121B2/en not_active Ceased
- 1997-01-24 AT AT97903114T patent/ATE347933T1/de not_active IP Right Cessation
- 1997-01-24 CN CN97193049A patent/CN1117634C/zh not_active Expired - Lifetime
- 1997-01-24 CA CA002243978A patent/CA2243978A1/en not_active Abandoned
- 1997-01-24 KR KR10-1998-0705667A patent/KR100461764B1/ko not_active Expired - Lifetime
- 1997-01-24 EP EP97903114A patent/EP0879085B1/en not_active Expired - Lifetime
- 1997-01-24 IL IL12536397A patent/IL125363A0/xx unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5269936A (en) * | 1989-10-16 | 1993-12-14 | Johannesburg Consolidated Investment Co. | Process for treating ion exchange resin |
| US5352345A (en) * | 1991-05-07 | 1994-10-04 | Alliedsignal Inc. | Ion exchange resin regenerant waste recovery and recycling via bipolar membranes |
| US5407564A (en) * | 1993-01-25 | 1995-04-18 | Turf Industries, Inc. | Closed loop liquid treatment and recycling system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1117634C (zh) | 2003-08-13 |
| CN1213328A (zh) | 1999-04-07 |
| KR100461764B1 (ko) | 2005-07-05 |
| ATE347933T1 (de) | 2007-01-15 |
| US5776340A (en) | 1998-07-07 |
| AU1710397A (en) | 1997-08-20 |
| DE69737090D1 (de) | 2007-01-25 |
| EP0879085A4 (en) | 2005-10-05 |
| IL125363A0 (en) | 1999-03-12 |
| US5718828A (en) | 1998-02-17 |
| KR19990081950A (ko) | 1999-11-15 |
| CA2243978A1 (en) | 1997-07-31 |
| WO1997026992A1 (en) | 1997-07-31 |
| JP2000503889A (ja) | 2000-04-04 |
| EP0879085A1 (en) | 1998-11-25 |
| DE69737090T2 (de) | 2007-06-06 |
| EP0879085B1 (en) | 2006-12-13 |
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