DE69614516T2 - Nanofiltration von konzentrierten wässrigen salzlösungen - Google Patents

Nanofiltration von konzentrierten wässrigen salzlösungen

Info

Publication number
DE69614516T2
DE69614516T2 DE69614516T DE69614516T DE69614516T2 DE 69614516 T2 DE69614516 T2 DE 69614516T2 DE 69614516 T DE69614516 T DE 69614516T DE 69614516 T DE69614516 T DE 69614516T DE 69614516 T2 DE69614516 T2 DE 69614516T2
Authority
DE
Germany
Prior art keywords
nanofiltration
concentrated aqueous
salt solutions
aqueous salt
solutions
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 - Lifetime
Application number
DE69614516T
Other languages
English (en)
Other versions
DE69614516T3 (de
DE69614516D1 (de
Inventor
Zbigniew Twardowski
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.)
Aker Solutions Canada Inc
Original Assignee
Kvaerner Chemetics Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23677016&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69614516(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kvaerner Chemetics Inc filed Critical Kvaerner Chemetics Inc
Application granted granted Critical
Publication of DE69614516D1 publication Critical patent/DE69614516D1/de
Publication of DE69614516T2 publication Critical patent/DE69614516T2/de
Publication of DE69614516T3 publication Critical patent/DE69614516T3/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/027—Nanofiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B01D61/026—Reverse osmosis; Hyperfiltration comprising multiple reverse osmosis steps
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/14—Purification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2317/00—Membrane module arrangements within a plant or an apparatus
    • B01D2317/02—Elements in series
    • B01D2317/022—Reject series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
DE69614516T 1995-04-17 1996-04-15 Nanofiltration von konzentrierten wässrigen salzlösungen Expired - Lifetime DE69614516T3 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/422,935 US5587083A (en) 1995-04-17 1995-04-17 Nanofiltration of concentrated aqueous salt solutions
US422935 1995-04-17
PCT/CA1996/000245 WO1996033005A1 (en) 1995-04-17 1996-04-15 Nanofiltration of concentrated aqueous salt solutions

Publications (3)

Publication Number Publication Date
DE69614516D1 DE69614516D1 (de) 2001-09-20
DE69614516T2 true DE69614516T2 (de) 2002-05-08
DE69614516T3 DE69614516T3 (de) 2006-11-30

Family

ID=23677016

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69614516T Expired - Lifetime DE69614516T3 (de) 1995-04-17 1996-04-15 Nanofiltration von konzentrierten wässrigen salzlösungen

Country Status (13)

Country Link
US (2) US5587083A (de)
EP (1) EP0821615B2 (de)
JP (1) JP3256545B2 (de)
KR (1) KR100385465B1 (de)
CN (1) CN1111081C (de)
AU (1) AU691415B2 (de)
BR (1) BR9608054A (de)
CA (1) CA2163480C (de)
DE (1) DE69614516T3 (de)
NZ (1) NZ304801A (de)
TW (1) TW343157B (de)
WO (1) WO1996033005A1 (de)
ZA (1) ZA962807B (de)

Families Citing this family (114)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5587083A (en) * 1995-04-17 1996-12-24 Chemetics International Company Ltd. Nanofiltration of concentrated aqueous salt solutions
NO303324B1 (no) * 1996-11-13 1998-06-29 Norsk Hydro As FremgangsmÕte for Õ fjerne sulfat fra konsentrerte MgCl2 l÷sninger
DE19703086A1 (de) * 1997-01-29 1998-07-30 Henkel Ecolab Gmbh & Co Ohg Verfahren zum Waschen von Wäsche
DE19710563C2 (de) 1997-03-14 2003-10-02 Daimler Chrysler Ag Verfahren und Vorrichtung zum Betreiben von Aluminium-Fräsbädern
US7534304B2 (en) * 1997-04-29 2009-05-19 Whirlpool Corporation Non-aqueous washing machine and methods
US6045588A (en) 1997-04-29 2000-04-04 Whirlpool Corporation Non-aqueous washing apparatus and method
CA2293691C (en) 1997-06-09 2006-11-07 Hw Process Technologies, Inc. Method for separating and isolating precious metals from non precious metals dissolved in solutions
US5961833A (en) * 1997-06-09 1999-10-05 Hw Process Technologies, Inc. Method for separating and isolating gold from copper in a gold processing system
EP1016152A1 (de) * 1997-06-23 2000-07-05 Pacific Lithium Limited Lithium-wiedergewinnung und -reinigung
US6508936B1 (en) * 1997-10-01 2003-01-21 Saline Water Conversion Corporation Process for desalination of saline water, especially water, having increased product yield and quality
US5945000A (en) * 1998-01-02 1999-08-31 J. R. Simplot Company Methods of purifying phosphoric acid
US6193882B1 (en) 1998-06-15 2001-02-27 Rswc Inc. Pressurized brining system
AU5086599A (en) * 1998-06-29 2000-01-17 Hw Process Technologies, Inc. Method of removing sulfate and/or metal ions from waters or wastewaters
US6241892B1 (en) * 1998-06-29 2001-06-05 Nm Tech Research Foundation Method of reducing the contamination level of a solvent purification system, and such solvent purification system
US8192633B2 (en) * 1998-07-06 2012-06-05 Grott Gerald J Methods of energy storage and transfer
US7717173B2 (en) * 1998-07-06 2010-05-18 Ecycling, LLC Methods of improving oil or gas production with recycled, increased sodium water
GB9815173D0 (en) 1998-07-13 1998-09-09 Nat Power Plc Process for the removal of sulphate ions
US6004464A (en) * 1998-07-14 1999-12-21 Desalination Systems, Inc. Spent brine reclamation
AU3241700A (en) * 1999-02-23 2000-09-14 Hw Process Technologies, Inc. Method of acid concentration following biological oxidative generation of sulfuric acid from sulfides
DE19932955A1 (de) * 1999-07-14 2001-01-25 Salinen Austria Ges M B H Bad Verfahren zur Aufbereitung von Salzsole und Alkalihalogenide, erhalten aus einem Verfahren zur Aufbereitung von Salzsole
US6383392B1 (en) * 1999-11-16 2002-05-07 Roche Vitamins, Inc. Process for concentrating epigallocatechin gallate
US6955222B2 (en) * 2000-08-07 2005-10-18 Ge Osmonics, Inc. Method for secondary oil recovery
BR0003677A (pt) * 2000-08-07 2002-03-26 Osmonics Inc Método de recuperação secundária de petróleo
AUPR226000A0 (en) * 2000-12-22 2001-01-25 Queensland Alumina Limited Contaminant removal process
DE10130136A1 (de) 2001-06-22 2003-01-02 Basf Ag Verfahren zur Gewinnung von N-Phosphonomethylglycin
US20030015470A1 (en) * 2001-07-20 2003-01-23 Muralidhara Harapanahalli S. Nanofiltration water-softening apparatus and method
WO2003076045A1 (de) * 2002-03-08 2003-09-18 Drm, Dr. Müller Ag Verfahren zur kontinuierlichen filtration einer rohsole für die verwendung in der chlor-alkali elektrolyse
US7144511B2 (en) * 2002-05-02 2006-12-05 City Of Long Beach Two stage nanofiltration seawater desalination system
US7083730B2 (en) * 2002-08-02 2006-08-01 University Of South Carolina Production of purified water and high value chemicals from salt water
DE10261419A1 (de) * 2002-12-30 2004-07-15 Saehan Industries Incorporation, Kyungsangbuk Haushaltswasserreinigungsvorrichtung auf Nanofiltrationsmembranbasis ohne Speicherbehälter
US20050016922A1 (en) * 2003-03-24 2005-01-27 Enzweiler Ronald J. Preferential precipitation membrane system and method
CN100408705C (zh) * 2003-04-30 2008-08-06 中国科学院青海盐湖研究所 纳滤法从盐湖卤水中分离镁和富集锂的方法
US20050150059A1 (en) * 2003-10-31 2005-07-14 Luckman Joel A. Non-aqueous washing apparatus and method
US20050091755A1 (en) * 2003-10-31 2005-05-05 Conrad Daniel C. Non-aqueous washing machine & methods
US7513004B2 (en) * 2003-10-31 2009-04-07 Whirlpool Corporation Method for fluid recovery in a semi-aqueous wash process
US20050222002A1 (en) * 2003-10-31 2005-10-06 Luckman Joel A Method for a semi-aqueous wash process
US7739891B2 (en) * 2003-10-31 2010-06-22 Whirlpool Corporation Fabric laundering apparatus adapted for using a select rinse fluid
US20050096242A1 (en) * 2003-10-31 2005-05-05 Luckman Joel A. Method for laundering fabric with a non-aqueous working fluid using a select rinse fluid
US7695524B2 (en) * 2003-10-31 2010-04-13 Whirlpool Corporation Non-aqueous washing machine and methods
US20050096243A1 (en) * 2003-10-31 2005-05-05 Luckman Joel A. Fabric laundering using a select rinse fluid and wash fluids
US7314606B2 (en) * 2004-03-29 2008-01-01 Council Of Scientific And Industrial Research Recovery of sodium thiocyanate from industrial process solution using nanofiltration technique
US20050224099A1 (en) * 2004-04-13 2005-10-13 Luckman Joel A Method and apparatus for cleaning objects in an automatic cleaning appliance using an oxidizing agent
US7837741B2 (en) 2004-04-29 2010-11-23 Whirlpool Corporation Dry cleaning method
WO2006026011A1 (en) * 2004-08-31 2006-03-09 Dow Global Technologies Inc. Method for testing separation modules
WO2006031732A2 (en) * 2004-09-13 2006-03-23 University Of South Carolina Water desalination process and apparatus
PL1807349T3 (pl) * 2004-10-22 2010-06-30 Akzo Nobel Chemicals Int Bv Sposób krystalizowania rozpuszczalnych soli dwuwartościowych anionów z solanki
US8038884B2 (en) 2005-02-18 2011-10-18 Akzo Nobel N.V. Process to prepare chlorine-containing compounds
DE602006005140D1 (de) 2005-02-18 2009-03-26 Akzo Nobel Nv Verfahren zur herstellung von salz
US7966684B2 (en) * 2005-05-23 2011-06-28 Whirlpool Corporation Methods and apparatus to accelerate the drying of aqueous working fluids
CN101222970A (zh) * 2005-07-12 2008-07-16 嘉吉股份有限公司 寿命延长的水软化系统、装置及其方法
ES2299317A1 (es) * 2005-11-08 2008-05-16 Corporacion Alimentaria Peñasanta, S.A. Procedimiento para la recuperacion de detergentes alcalinos de fase unica utilizados en instalaciones industriales de limpieza in situ.
DE502006003931D1 (de) * 2006-01-12 2009-07-23 Esco Europ Salt Company Gmbh & Verfahren zur Behandlung von Salzsole
US9034175B2 (en) * 2007-03-27 2015-05-19 Shell Oil Company Method for reducing the mercury content of natural gas condensate and natural gas processing plant
US20090101587A1 (en) 2007-10-22 2009-04-23 Peter Blokker Method of inhibiting scale formation and deposition in desalination systems
US20100239467A1 (en) 2008-06-17 2010-09-23 Brent Constantz Methods and systems for utilizing waste sources of metal oxides
WO2009102442A1 (en) * 2008-02-11 2009-08-20 Siemens Water Technologies Corp. Desalination of water containing high silica content
FR2930541B1 (fr) * 2008-04-29 2010-05-21 Solvay Procede d'epuration de solutions aqueuses
WO2010009273A1 (en) 2008-07-16 2010-01-21 Calera Corporation Co2 utilization in electrochemical systems
US20100051556A1 (en) * 2008-08-29 2010-03-04 Grott Gerald J Methods of purifiying water using waste brines to regenerate ion-exchange resins
US8869477B2 (en) 2008-09-30 2014-10-28 Calera Corporation Formed building materials
US20100147767A1 (en) * 2008-12-15 2010-06-17 Grott Gerald J Method for purifying waste saline waters without reagent waste
CA2752454C (en) 2009-01-13 2020-01-14 B.P.T. Bio Pure Technology Ltd. Solvent and acid stable membranes and methods of manufacture thereof
US8313634B2 (en) 2009-01-29 2012-11-20 Princeton University Conversion of carbon dioxide to organic products
US8834688B2 (en) 2009-02-10 2014-09-16 Calera Corporation Low-voltage alkaline production using hydrogen and electrocatalytic electrodes
WO2010101953A1 (en) 2009-03-02 2010-09-10 Calera Corporation Gas stream multi-pollutants control systems and methods
US7993511B2 (en) * 2009-07-15 2011-08-09 Calera Corporation Electrochemical production of an alkaline solution using CO2
WO2011097468A2 (en) * 2010-02-05 2011-08-11 Calera Corporation Acid separation by acid retardation on an ion exchange resin in an electrochemical system
WO2011102848A1 (en) * 2010-02-17 2011-08-25 Katana Energy Llc Zero discharge water desalination plant with minerals extraction integrated with natural gas combined cycle power generation
US8500987B2 (en) * 2010-03-19 2013-08-06 Liquid Light, Inc. Purification of carbon dioxide from a mixture of gases
US8845877B2 (en) 2010-03-19 2014-09-30 Liquid Light, Inc. Heterocycle catalyzed electrochemical process
US8721866B2 (en) * 2010-03-19 2014-05-13 Liquid Light, Inc. Electrochemical production of synthesis gas from carbon dioxide
US10526224B2 (en) 2010-06-02 2020-01-07 Hl Seawater Holdings, Llc Desalination intake system with net positive impact on habitat
US8524066B2 (en) 2010-07-29 2013-09-03 Liquid Light, Inc. Electrochemical production of urea from NOx and carbon dioxide
US8845878B2 (en) 2010-07-29 2014-09-30 Liquid Light, Inc. Reducing carbon dioxide to products
US8568581B2 (en) 2010-11-30 2013-10-29 Liquid Light, Inc. Heterocycle catalyzed carbonylation and hydroformylation with carbon dioxide
US8961774B2 (en) 2010-11-30 2015-02-24 Liquid Light, Inc. Electrochemical production of butanol from carbon dioxide and water
AR084006A1 (es) * 2010-12-01 2013-04-17 Toray Industries Procedimiento para la separacion y recuperacion de una sal de metal alcalino purificada
US9090976B2 (en) 2010-12-30 2015-07-28 The Trustees Of Princeton University Advanced aromatic amine heterocyclic catalysts for carbon dioxide reduction
CN102153113B (zh) * 2011-03-01 2014-11-05 中国中轻国际工程有限公司 芒硝型卤水联产碳酸钠、氯化钠、硫酸钠、氯化铵工艺
US8480905B2 (en) * 2011-03-03 2013-07-09 Jr-Jung Iang Method and system for recycling and treating dyeing wastewater
US8562811B2 (en) 2011-03-09 2013-10-22 Liquid Light, Inc. Process for making formic acid
BR112014000052A2 (pt) 2011-07-06 2017-02-07 Liquid Light Inc redução de dióxido de carbono em ácidos carboxílicos, glicóis e carboxilatos
AU2012278948A1 (en) 2011-07-06 2014-01-16 Liquid Light, Inc. Carbon dioxide capture and conversion to organic products
US8999171B2 (en) 2011-07-18 2015-04-07 Hl Seawater Holdings, Llc Membrane and electrodialysis based seawater desalination with salt, boron and gypsum recovery
CA2864478A1 (en) * 2012-03-07 2013-09-12 Chemetics Inc. Nanofiltration process for enhanced brine recovery and sulfate removal
US9856154B2 (en) * 2012-03-27 2018-01-02 Toray Industries, Inc. Fresh water generation method
WO2013146391A1 (ja) * 2012-03-30 2013-10-03 東レ株式会社 アルカリ金属分離回収方法およびアルカリ金属分離回収装置
CN102806013A (zh) * 2012-05-04 2012-12-05 北京化工大学 纳滤膜装置用于纯碱生产中废液脱盐的方法
CA2878336A1 (en) * 2012-07-13 2014-01-16 Chemetics Inc. Nanofiltration process for impurity removal
US9217108B2 (en) 2012-08-13 2015-12-22 Enviro Water Minerals Company, Inc. System and method for producing a gypsum slurry for irrigation
WO2014028465A1 (en) * 2012-08-13 2014-02-20 Enviro Water Minerals Company, Inc. System for removing minerals from a brine using electrodialysis
US9259703B2 (en) 2012-08-13 2016-02-16 Enviro Water Minerals Company, Inc. System for removing selenium from a feed stream
US10105653B2 (en) 2012-08-13 2018-10-23 Enviro Water Minerals Company, Inc. System for rinsing electrodialysis electrodes
US10189733B2 (en) 2012-08-13 2019-01-29 Enviro Water Minerals Company, Inc. Heating system for desalination
US9737827B2 (en) 2012-08-13 2017-08-22 Enviro Water Minerals Company, Inc. System for removing high purity salt from a brine
CN102976409B (zh) * 2012-12-04 2015-05-13 北京化工大学 氯酸盐生产中重铬酸钠的回收利用的工艺
US20140290484A1 (en) * 2013-03-27 2014-10-02 Cameron Solutions, Inc. System and Method For Treating A Saline Feed Stream To An Electro-Chlorination Unit
US10370275B2 (en) 2013-11-25 2019-08-06 Enviro Water Minerals Company, Inc. System for removing minerals from a brine
CN103754828A (zh) * 2013-12-23 2014-04-30 内蒙古工业大学 一种重铬酸钠闭路循环制备氯酸钠的清洁生产方法
CN105013325B (zh) * 2014-04-22 2019-01-18 佛山市三水三角洲化工有限公司 纳滤膜高通量高截留率地分离高浓度混盐的方法
GB2526294B (en) * 2014-05-19 2017-05-10 Tenova Advanced Tech Ltd Selective separation process
CN104628186B (zh) * 2015-01-30 2016-04-20 西安聚方环境科技有限公司 一种废水零排放工艺中钠离子交换器再生废液的处理方法及循环利用系统
WO2017148507A1 (en) * 2016-03-01 2017-09-08 Siemens Aktiengesellschaft A technique for activating sulfur-based electrode for an electrolyser
CN106185996B (zh) * 2016-07-01 2018-01-26 神华集团有限责任公司 一种制盐方法和制盐系统
US10400198B2 (en) 2016-08-25 2019-09-03 Eagle Us 2 Llc Method of sanitizing a surface
CN115180688A (zh) 2017-05-11 2022-10-14 Bl 科技公司 使用纳滤软化锂盐水的方法
CN108468065B (zh) * 2018-05-14 2022-07-12 湖南恒光科技股份有限公司 一种氯酸钠和氯碱联合脱硝工艺
CN110040866A (zh) * 2018-05-28 2019-07-23 内蒙古久科康瑞环保科技有限公司 高含盐工业废水沉淀分盐零排放方法及系统
CN111153538B (zh) * 2019-04-02 2023-10-31 内蒙古晶泰环境科技有限责任公司 可保证盐硝联产稳定运行的高盐废水处理系统及其工艺
CN110745845A (zh) * 2019-11-05 2020-02-04 高翔 一种焦炉烟气脱硫副产物脱硫灰的回收方法
CN111547916A (zh) * 2020-04-08 2020-08-18 苏州乔发盐化工设备科技有限公司 一种富硝废水的盐硝分盐方法
CN112408432A (zh) * 2020-11-27 2021-02-26 江苏扬农化工集团有限公司 一种芳香化合物硝化废水中混合盐分离提纯的方法
US20230227337A1 (en) * 2021-12-30 2023-07-20 Saudi Arabian Oil Company Method to treat nano-filtration membrane retentate for reuse in fracturing and drilling applications
DE102022120661A1 (de) 2022-08-16 2024-02-22 K+S Aktiengesellschaft Verfahren und Vorrichtung zur Auftrennung hochkonzentrierter Salzlösungen

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083781A (en) * 1976-07-12 1978-04-11 Stone & Webster Engineering Corporation Desalination process system and by-product recovery
US4636376A (en) * 1985-09-30 1987-01-13 Ppg Industries, Inc. Sulfate removal from alkali metal chlorate solutions
JPH0613117B2 (ja) * 1986-02-03 1994-02-23 日立プラント建設株式会社 塩類、シリカ及び有機物を含有する廃水の処理方法
US4702805A (en) * 1986-03-27 1987-10-27 C-I-L Inc. Production of sodium chlorate
DE3623796A1 (de) * 1986-07-15 1988-01-28 Dow Chemical Rheinwerk Gmbh Vorrichtung und adsorptionsverfahren zur selektiven entfernung von ionen aus fluessigkeiten
US4723603A (en) * 1987-02-03 1988-02-09 Marathon Oil Company Preventing plugging by insoluble salts in a hydrocarbon-bearing formation and associated production wells
US4872991A (en) * 1988-07-05 1989-10-10 Texaco Inc. Treatment of water
US5028336A (en) * 1989-03-03 1991-07-02 Texaco Inc. Separation of water-soluble organic electrolytes
US4981594A (en) * 1990-04-26 1991-01-01 Wastewater Resources Inc. Waste water purification system
US5158683A (en) * 1991-09-03 1992-10-27 Ethyl Corporation Bromide separation and concentration using semipermeable membranes
US5346627A (en) * 1992-03-03 1994-09-13 Nalco Chemical Company Method for removing metals from a fluid stream
US5268104A (en) * 1992-07-09 1993-12-07 Stone & Webster Engineering, Corp. Process for treating and regenerating spent caustic
US5254257A (en) * 1993-01-19 1993-10-19 Culligan International Company Reclaiming of spent brine
US5476591A (en) * 1993-05-25 1995-12-19 Harrison Western Environmental Services, Inc. Liquid treatment system and method for operating the same
US5310486A (en) * 1993-05-25 1994-05-10 Harrison Western Environmental Services, Inc. Multi-stage water treatment system and method for operating the same
US5547579A (en) * 1995-01-20 1996-08-20 Eco-Tec Limited Process and apparatus for purification of contaminated acids
US5587083A (en) * 1995-04-17 1996-12-24 Chemetics International Company Ltd. Nanofiltration of concentrated aqueous salt solutions

Also Published As

Publication number Publication date
US5858240A (en) 1999-01-12
CA2163480C (en) 1999-11-16
JPH11504564A (ja) 1999-04-27
CN1180322A (zh) 1998-04-29
KR19990007852A (ko) 1999-01-25
WO1996033005A1 (en) 1996-10-24
NZ304801A (en) 1998-12-23
EP0821615B1 (de) 2001-08-16
DE69614516T3 (de) 2006-11-30
AU691415B2 (en) 1998-05-14
US5587083A (en) 1996-12-24
BR9608054A (pt) 1999-11-30
EP0821615A1 (de) 1998-02-04
CA2163480A1 (en) 1996-10-18
JP3256545B2 (ja) 2002-02-12
CN1111081C (zh) 2003-06-11
ZA962807B (en) 1996-10-11
AU5267096A (en) 1996-11-07
DE69614516D1 (de) 2001-09-20
EP0821615B2 (de) 2006-04-26
TW343157B (en) 1998-10-21
KR100385465B1 (ko) 2003-08-19

Similar Documents

Publication Publication Date Title
DE69614516D1 (de) Nanofiltration von konzentrierten wässrigen salzlösungen
DE69823016D1 (de) Wässrige lösungen von salicylsaure derivaten
BR9601276A (pt) Solução de interferona aquosa
MX9200450A (es) Suspensiones acuosas de acidos peroxicarboxilicos.
EE9700009A (et) Risperidooni vesilahuselised ravimvormid
DE69603972D1 (de) Wässrige tinten enthaltend nahinfrarod-fluorophore
NO931495D0 (no) Vandige saltopploesninger
DE69806498D1 (de) Behandlung von kontaktlinsen mit wässrigen, alkalicarbonat-haltigen lösungen
DE69122646D1 (de) Konzentrierte wässrige Tensidlösung
ATE257836T1 (de) Salz von naphthyridincarbonsäure-derivaten
DE69504151D1 (de) Wässrige Emulsion
BR8901283A (pt) Solucoes de tenso-ativos,aquosas,espessadas
DE69801676D1 (de) Wässrige emulsionen von fischer-tropschparaffinen
DE69605444T2 (de) Entwässerung von wässrigen suspensionen
DE59307983D1 (de) Konzentrierte, wässrige Flüssigformulierungen von Farbbildnern
EE9500062A (et) Formaldehüüdi vesilahuse valmistamise pidev protsess
DE59108072D1 (de) Konzentrierte wässrige Lösungen anionischer Disazofarbstoffe
BR9607258A (pt) Sais de ácido clavul nico
DE59504988D1 (de) Niedrigviskose wässrige konzentrate von betaintensiden
DE59807008D1 (de) Aluminiumsalze von alkylhydroxymethylphosphinsäuren
DE59803858D1 (de) Aluminiumsalze von alkyl-1-alkoxyethylphosphinsäuren
DE58905881D1 (de) Wässrige Lösungen von synthetischen Gerbstoffen.
DE69712190T2 (de) Behandlung von kontaktlinsen mit wässriger lösung von phophonsäurederivaten
DK0827503T3 (da) Pyrrolidinylmethylindol-salt
NO974915D0 (no) Konsentrerte opplösninger av polyhydroksyalkylaminer og deres anvendelse, spesielt for fremstilling av polyhydroksyalkylkarboksylsyreamider

Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: KVAERNER CHEMETICS INC., VANCOUVER, BRITISH COLUMB

8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings