ZA98178B - Improving the performance of reverse osmosis membranes used in the removal of dissolved solids from liquids - Google Patents

Improving the performance of reverse osmosis membranes used in the removal of dissolved solids from liquids

Info

Publication number
ZA98178B
ZA98178B ZA98178A ZA98178A ZA98178B ZA 98178 B ZA98178 B ZA 98178B ZA 98178 A ZA98178 A ZA 98178A ZA 98178 A ZA98178 A ZA 98178A ZA 98178 B ZA98178 B ZA 98178B
Authority
ZA
South Africa
Prior art keywords
liquids
removal
improving
performance
reverse osmosis
Prior art date
Application number
ZA98178A
Other languages
English (en)
Inventor
William Graham
Original Assignee
Garfield Int Invest Ltd
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
Application filed by Garfield Int Invest Ltd filed Critical Garfield Int Invest Ltd
Publication of ZA98178B publication Critical patent/ZA98178B/xx

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/48Treatment of water, waste water, or sewage with magnetic or electric fields
    • C02F1/484Treatment of water, waste water, or sewage with magnetic or electric fields using electromagnets
    • 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
    • B01D61/02Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025Reverse osmosis; Hyperfiltration
    • 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
    • B01D61/02Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/10Accessories; Auxiliary operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D65/00Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/08Prevention of membrane fouling or of concentration polarisation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2321/00Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/24Magnetic effects
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08Seawater, e.g. for desalination
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/48Devices for applying magnetic or electric fields
    • C02F2201/483Devices for applying magnetic or electric fields using coils
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/22Eliminating or preventing deposits, scale removal, scale prevention
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/131Reverse-osmosis
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/138Water desalination using renewable energy
    • Y02A20/141Wind power

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Physical Water Treatments (AREA)
  • Water Treatment By Sorption (AREA)
ZA98178A 1997-01-09 1998-01-09 Improving the performance of reverse osmosis membranes used in the removal of dissolved solids from liquids ZA98178B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA97187 1997-01-09

Publications (1)

Publication Number Publication Date
ZA98178B true ZA98178B (en) 1998-07-31

Family

ID=58232800

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA98178A ZA98178B (en) 1997-01-09 1998-01-09 Improving the performance of reverse osmosis membranes used in the removal of dissolved solids from liquids

Country Status (44)

Country Link
US (1) US6217773B1 (is)
EP (1) EP0951447B1 (is)
JP (1) JP4307560B2 (is)
KR (1) KR100500038B1 (is)
CN (1) CN1136949C (is)
AP (1) AP1097A (is)
AR (1) AR011065A1 (is)
AT (1) ATE301617T1 (is)
AU (1) AU5565898A (is)
BG (1) BG63749B1 (is)
BR (1) BR9807069A (is)
CA (1) CA2276599C (is)
CO (1) CO4930300A1 (is)
CZ (1) CZ294354B6 (is)
DE (1) DE69831134T2 (is)
DK (1) DK0951447T3 (is)
DZ (1) DZ2396A1 (is)
EA (1) EA002929B1 (is)
EE (1) EE04663B1 (is)
EG (1) EG21382A (is)
ES (1) ES2247672T3 (is)
GB (1) GB2335153B (is)
GE (1) GEP20022837B (is)
HU (1) HU225090B1 (is)
ID (1) ID22664A (is)
IL (1) IL130595A (is)
IS (1) IS2252B (is)
JO (1) JO2000B1 (is)
MA (1) MA26028A1 (is)
MY (1) MY130462A (is)
NO (1) NO319568B1 (is)
NZ (1) NZ336423A (is)
OA (1) OA11075A (is)
PA (1) PA8460401A1 (is)
PE (1) PE72099A1 (is)
PL (1) PL191281B1 (is)
SA (1) SA98180897B1 (is)
SK (1) SK284615B6 (is)
TN (1) TNSN98006A1 (is)
TR (1) TR199901965T2 (is)
TW (1) TW460417B (is)
UA (1) UA52717C2 (is)
WO (1) WO1998030501A2 (is)
ZA (1) ZA98178B (is)

Families Citing this family (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6139750A (en) * 1995-12-13 2000-10-31 Garfield International Investments Limited Water desalination
CO5241319A1 (es) * 1999-03-29 2003-01-31 Garfield Int Invest Ltd Cartuchos de osmosis invertida y membranas de osmosis invertida
EP1232119B1 (de) * 1999-11-23 2004-11-03 Dietrich Reichwein Verfahren und vorrichtung zur behandlung von flüssigkeiten
US6783687B2 (en) 2002-02-13 2004-08-31 Gordon L. Richard Method and apparatus for separating ions from a fluid stream
US6852219B2 (en) * 2002-07-22 2005-02-08 John M. Hammond Fluid separation and delivery apparatus and method
WO2004022491A1 (en) * 2002-09-04 2004-03-18 Biolab, Inc. Disinfection of reverse osmosis membrane
US20050056579A1 (en) * 2003-04-01 2005-03-17 Hodgson John Andrew Water magnetizer
US6971409B2 (en) 2003-05-07 2005-12-06 Dietrich Reichwein Method and apparatus for the treatment of fluids
US7632410B2 (en) * 2003-08-21 2009-12-15 Christopher Heiss Universal water purification system
WO2005119007A1 (en) 2004-05-28 2005-12-15 Bp Exploration Operating Company Limited Desalination method
CN1303003C (zh) * 2004-10-28 2007-03-07 王建中 反渗透海水淡化脉冲电磁场预处理方法
DE102004062535A1 (de) * 2004-12-24 2006-07-06 Forschungszentrum Karlsruhe Gmbh Semipermeables Membransystem für magnetische Partikelfraktionen
CN100396365C (zh) * 2005-01-21 2008-06-25 赵仁兴 一种改善人工合成固膜分离性能的方法
CN1312052C (zh) * 2005-03-04 2007-04-25 北京众博达石油科技有限公司 微耗智能广谱电子除垢防垢方法
AU2006230627A1 (en) * 2005-03-29 2006-10-05 Grahamtek Technologies Singapore Pte Ltd Manufacture of membranes for desalination and filtration
ZA200705815B (en) * 2005-03-29 2008-10-29 Sg Grahamtek Technologies Sing Manufacture of membranes for desalination and filtration
GB2431154B (en) * 2005-10-15 2011-05-18 Daniel Stefanini Purification treatment of water
US7470349B1 (en) * 2006-04-11 2008-12-30 Joel Miller Pressure desalination
KR100840512B1 (ko) 2006-07-10 2008-06-23 서희동 해수나 해양 심층수를 농업용수로 처리하는 방법
US8119008B2 (en) 2006-07-10 2012-02-21 Christopher Heiss Fluid purification methods and devices
NL1032346C2 (nl) * 2006-08-18 2008-02-19 Vitens N V Werkwijze voor het scheiden van bestanddelen uit een vloeistof.
WO2009009465A1 (en) * 2007-07-06 2009-01-15 Christopher William Heiss Electrocoagulation reactor and water treatment system and method
US8187444B2 (en) * 2007-08-10 2012-05-29 Eric John Kruger Fluid treatment device
WO2009023186A2 (en) * 2007-08-10 2009-02-19 Freije Treatment Systems, Inc. Method and apparatus for treating a fluid
US8061280B2 (en) * 2008-04-10 2011-11-22 Microlin, Llc Apparatus and method for delivering beneficial liquids at steady rate
DE102008002727B4 (de) * 2008-06-27 2020-12-17 Brita Gmbh Vorrichtung zur Behandlung von Wasser, insbesondere Filtervorrichtung, und Kartusche
US20110192179A1 (en) * 2010-02-05 2011-08-11 Freije Iii William F Evaporative heat transfer system and method
US9475709B2 (en) 2010-08-25 2016-10-25 Lockheed Martin Corporation Perforated graphene deionization or desalination
RU2495496C2 (ru) * 2011-02-24 2013-10-10 Общество с ограниченной ответственностью "Системы и технологии" Автомат для розничной продажи воды
US9028663B2 (en) 2012-03-21 2015-05-12 Lockheed Martin Corporation Molecular separation device
US20130277305A1 (en) * 2012-04-19 2013-10-24 Lockheed Martin Corporation Selectively perforated graphene membranes for compound harvest, capture and retention
US10213746B2 (en) 2016-04-14 2019-02-26 Lockheed Martin Corporation Selective interfacial mitigation of graphene defects
US9744617B2 (en) 2014-01-31 2017-08-29 Lockheed Martin Corporation Methods for perforating multi-layer graphene through ion bombardment
US10653824B2 (en) 2012-05-25 2020-05-19 Lockheed Martin Corporation Two-dimensional materials and uses thereof
US10376845B2 (en) 2016-04-14 2019-08-13 Lockheed Martin Corporation Membranes with tunable selectivity
US9834809B2 (en) 2014-02-28 2017-12-05 Lockheed Martin Corporation Syringe for obtaining nano-sized materials for selective assays and related methods of use
US9610546B2 (en) 2014-03-12 2017-04-04 Lockheed Martin Corporation Separation membranes formed from perforated graphene and methods for use thereof
CA2873081C (en) 2012-06-11 2020-12-29 Evoqua Water Technologies Llc Treatment using fixed film processes and ballasted settling
US9651523B2 (en) 2012-09-26 2017-05-16 Evoqua Water Technologies Llc System for measuring the concentration of magnetic ballast in a slurry
US12350627B2 (en) 2013-02-28 2025-07-08 Aqua Membranes, Inc. Permeate flow patterns
WO2014164621A1 (en) 2013-03-12 2014-10-09 Lockheed Martin Corporation Method for forming filter with uniform aperture size
AU2014203279B2 (en) * 2013-06-19 2019-01-24 Hydrosmart A Liquid Treatment Device
US9572918B2 (en) 2013-06-21 2017-02-21 Lockheed Martin Corporation Graphene-based filter for isolating a substance from blood
SG11201606287VA (en) 2014-01-31 2016-08-30 Lockheed Corp Processes for forming composite structures with a two-dimensional material using a porous, non-sacrificial supporting layer
WO2015116946A1 (en) 2014-01-31 2015-08-06 Lockheed Martin Corporation Perforating two-dimensional materials using broad ion field
CN106232205A (zh) 2014-03-12 2016-12-14 洛克希德马丁公司 由有孔石墨烯形成的分离膜
CN103880120B (zh) * 2014-03-28 2015-12-02 张英华 低、高纯度旋转磁场与水泵式反渗透海水淡化装置
MX2017002738A (es) 2014-09-02 2017-08-02 Lockheed Corp Membranas de hemodialisis y hemofiltracion basadas en un material de membrana bidimensional y metodos que emplean las mismas.
US11192069B2 (en) * 2015-04-24 2021-12-07 Nanyang Technological University Method and apparatus for assessing a state of fouling of a reverse osmosis system
WO2017023376A1 (en) 2015-08-05 2017-02-09 Lockheed Martin Corporation Perforatable sheets of graphene-based material
JP2018530499A (ja) 2015-08-06 2018-10-18 ロッキード・マーチン・コーポレーション グラフェンのナノ粒子変性及び穿孔
WO2017180134A1 (en) 2016-04-14 2017-10-19 Lockheed Martin Corporation Methods for in vivo and in vitro use of graphene and other two-dimensional materials
EP3442739A4 (en) 2016-04-14 2020-03-04 Lockheed Martin Corporation PROCESS FOR PROCESSING GRAPHENE SHEETS FOR LARGE SCALE TRANSFER USING A FREE FLOATING PROCESS
KR20180133430A (ko) 2016-04-14 2018-12-14 록히드 마틴 코포레이션 결함 형성 또는 힐링의 인 시츄 모니터링 및 제어를 위한 방법
KR20190018410A (ko) 2016-04-14 2019-02-22 록히드 마틴 코포레이션 흐름 통로들을 갖는 2차원 막 구조들
US11376552B2 (en) 2016-09-20 2022-07-05 Aqua Membranes Inc. Permeate flow paterns
CN110248802A (zh) 2016-11-19 2019-09-17 阿夸曼布拉尼斯有限责任公司 螺旋卷绕元件的干扰图案
CN110461445B (zh) 2017-04-12 2022-10-21 阿夸曼布拉尼斯公司 用于卷绕式过滤元件的分级间隔件
EP3612293A4 (en) 2017-04-20 2020-12-30 Aqua Membranes, Inc. GROUNDS FOR NON-SNAP AND NON-DEFORMATION FOR SPIRAL-WOUND ELEMENTS
US11745143B2 (en) 2017-04-20 2023-09-05 Aqua Membranes, Inc. Mixing-promoting spacer patterns for spiral-wound elements
KR102513191B1 (ko) 2017-10-13 2023-03-22 아쿠아 멤브레인스 인코포레이티드 나선형 권취 요소를 위한 가교 지지체 및 축소된 공급물 스페이서
US10899638B2 (en) * 2018-01-31 2021-01-26 Organocat, LLC Method and system for water electromagnetic activation and active metals generation
KR102898557B1 (ko) 2019-01-27 2025-12-09 아쿠아 멤브레인스 인코포레이티드 복합막
US12303838B2 (en) 2019-08-06 2025-05-20 Aqua Membranes, Inc. Preferred flow paths for spiral-wound elements
EP4034506A4 (en) 2019-11-08 2023-07-26 Evoqua Water Technologies LLC ACCELERATED DEPOSITION OF FLAKES FOLLOWING ELECTROCOAGULATION/AN ELECTROCHEMICAL PROCESS USING FLOCATION
US11633700B2 (en) 2020-04-07 2023-04-25 Aqua Membranes Inc. Independent spacers and methods
CN113092673B (zh) * 2021-03-30 2022-11-01 惠州晟泽新材料有限公司 一种多功能膜分离实验设备
EP4457011A2 (en) 2021-12-28 2024-11-06 Aqua Membranes, Inc. Spiral element construction yielding enhanced capacity
US20230324009A1 (en) * 2022-04-07 2023-10-12 Ford Global Technologies, Llc Compressed hydrogen storage units and methods thereof
CN119018992B (zh) * 2023-05-23 2026-03-10 宁波方太厨具有限公司 净水设备的水垢处理方法、系统、设备及存储介质

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990968A (en) * 1971-08-19 1976-11-09 Desares Stiftung Fur Forderung Der Forschung Zur Entsalzung Des Wassers Means for increasing the flow across a reverse osmosis membrane using an alternating electric field
JPS5217232B2 (is) * 1972-02-23 1977-05-13
AT346252B (de) * 1976-11-23 1978-11-10 Mach Guido Verfahren zum entsalzen von wasser und vorrichtung zum durchfuehren des verfahrens
JPS58159810A (ja) * 1982-03-18 1983-09-22 Nitto Electric Ind Co Ltd 溶液分離管
JPS6091214U (ja) * 1983-11-24 1985-06-22 株式会社日立製作所 磁気分離装置
JPS60189917A (ja) * 1984-03-09 1985-09-27 Matsushita Electric Ind Co Ltd ボイスコイルの製造方法
JPS61118104A (ja) * 1984-10-22 1986-06-05 Nitto Electric Ind Co Ltd 液体分離装置
RU1789253C (ru) * 1987-12-14 1993-01-23 Институт "Союзгипроводхоз" Мембранна чейка
US4865747A (en) * 1988-01-27 1989-09-12 Aqua-D Corp. Electromagnetic fluid treating device and method
US5224922A (en) * 1988-05-19 1993-07-06 Kurtz Warren H Quasistatic biological cell and tissue modifier
ES2043186T3 (es) * 1989-07-04 1993-12-16 Elfriede Schulze Dispositivo para la eliminacion de incrustaciones o para la prevencion de la formacion de incrustaciones.
DE3938245A1 (de) * 1989-11-17 1991-05-23 Erwin Lotze Filtervorrichtung mit magnetisch aktivierbarem filtermaterial
JPH0549029U (ja) * 1991-12-09 1993-06-29 水道機工株式会社 透過膜によるろ過装置
JPH05220485A (ja) * 1992-02-14 1993-08-31 Maekawa Seisakusho:Kk 高周波誘導電磁場を用いた水処理方法
GB2294416A (en) * 1994-10-28 1996-05-01 Michael Ashton Liquid dispensing apparatus

Also Published As

Publication number Publication date
WO1998030501A2 (en) 1998-07-16
PE72099A1 (es) 1999-08-05
IL130595A (en) 2004-05-12
CO4930300A1 (es) 2000-06-27
GB2335153A (en) 1999-09-15
EE9900276A (et) 1999-12-15
PL334488A1 (en) 2000-02-28
PA8460401A1 (es) 2001-04-30
ID22664A (id) 1999-12-02
AU5565898A (en) 1998-08-03
DE69831134T2 (de) 2006-06-08
EA002929B1 (ru) 2002-10-31
SK284615B6 (sk) 2005-07-01
NO993397L (no) 1999-07-09
UA52717C2 (uk) 2003-01-15
GB2335153B (en) 2000-11-29
KR100500038B1 (ko) 2005-07-07
NZ336423A (en) 2001-04-27
US6217773B1 (en) 2001-04-17
CA2276599A1 (en) 1998-07-16
OA11075A (en) 2003-03-17
AP9901591A0 (en) 1999-06-30
PL191281B1 (pl) 2006-04-28
DZ2396A1 (fr) 2003-06-04
ES2247672T3 (es) 2006-03-01
JP2001518005A (ja) 2001-10-09
MA26028A1 (fr) 2004-04-01
BG103272A (bg) 1999-09-30
EP0951447A2 (en) 1999-10-27
EE04663B1 (et) 2006-08-15
HUP0000959A1 (hu) 2000-08-28
NO319568B1 (no) 2005-08-29
TNSN98006A1 (fr) 2000-12-29
EA199900574A1 (ru) 1999-12-29
GB9914704D0 (en) 1999-08-25
IL130595A0 (en) 2000-06-01
IS5096A (is) 1999-06-29
CZ9902441A3 (cs) 2000-11-15
AP1097A (en) 2002-08-26
DE69831134D1 (de) 2005-09-15
CA2276599C (en) 2005-08-23
GB2335153A8 (en) 1999-10-08
HU225090B1 (en) 2006-06-28
JP4307560B2 (ja) 2009-08-05
BR9807069A (pt) 2000-05-02
CZ294354B6 (cs) 2004-12-15
SA98180897B1 (ar) 2006-04-22
CN1243454A (zh) 2000-02-02
HUP0000959A3 (en) 2001-07-30
KR20000070036A (ko) 2000-11-25
WO1998030501A3 (en) 1998-09-11
DK0951447T3 (da) 2005-12-12
AR011065A1 (es) 2000-08-02
TW460417B (en) 2001-10-21
ATE301617T1 (de) 2005-08-15
CN1136949C (zh) 2004-02-04
SK92499A3 (en) 2000-01-18
TR199901965T2 (xx) 1999-12-21
MY130462A (en) 2007-06-29
EG21382A (en) 2001-09-30
NO993397D0 (no) 1999-07-09
GEP20022837B (en) 2002-11-25
BG63749B1 (bg) 2002-11-29
IS2252B (is) 2007-06-15
EP0951447B1 (en) 2005-08-10
JO2000B1 (en) 1999-05-15

Similar Documents

Publication Publication Date Title
ZA98178B (en) Improving the performance of reverse osmosis membranes used in the removal of dissolved solids from liquids
DE4491730T1 (de) Umkehrosmose-Wasserreiniger
GR3017473T3 (en) Prevention of biofouling of reverse osmosis membranes.
EP1020218A4 (en) COMPOSED REVERSE OSMOSMEMBRANE AND METHOD FOR THE PRODUCTION THEREOF
TW315754U (en) Table type reverse osmosis water dispenser structure
PL335404A1 (en) Portable reverse osmosis unit for obtaining drinking water
EP1029583A4 (en) SPIRAL ELEMENT OF REVERSE OSMOSIS MEMBRANE, REVERSE OSMOSIS MEMBRANE MODULE USING THE SAME, DEVICE AND METHOD FOR REVERSE OSMOSIS SEPARATION INCLUDING THIS MODULE
AU1023388A (en) Reverse osmosis membranes
EP0473459A3 (en) Reverse osmosis membranes of polyamideurethane
IL130129A0 (en) Polysulfone semipermeable membranes and methods for making the same
IL87126A0 (en) Reverse osmosis membranes
AU5360090A (en) Treatment for reverse osmosis membranes
AR245012A1 (es) Un aparato mejorado para el ultra o microfiltrado de liquidos, especialmente agua.
IT1291978B1 (it) Procedimento di purificazione di percolato di discarica mediante ultrafiltrazione ed osmosi inversa
AU5955898A (en) Centrifugal system for reverse osmosis
AU1602997A (en) Sea water reverse osmosis desalination system, with permanent renewal of the water to be de-salted
AU2029597A (en) Process for purifying 7-substituted-amino-desacetoxy-cephalosporines through the use of filtration membranes
AU2437195A (en) Reverse osmosis permeate pump
EP0674940A3 (de) Pervaporationsmembranen und ihre Verwendung.
KR950030373U (ko) 역삼투압 정수기
AU2824997A (en) Supported liquid membrane separation
AU3399900A (en) Reverse osmosis cartridges and reverse osmosis membranes
GB2214105B (en) Liquid pump utilizing reverse osmosis
TW313893U (en) Osmosis drinking water filter
GB0018742D0 (en) Solid liquid separating medium for sewage waste water etc