CA1118365A - Reverse osmosis method and apparatus - Google Patents
Reverse osmosis method and apparatusInfo
- Publication number
- CA1118365A CA1118365A CA000298758A CA298758A CA1118365A CA 1118365 A CA1118365 A CA 1118365A CA 000298758 A CA000298758 A CA 000298758A CA 298758 A CA298758 A CA 298758A CA 1118365 A CA1118365 A CA 1118365A
- Authority
- CA
- Canada
- Prior art keywords
- piston
- valve
- fluid
- pump
- piston rod
- 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
Links
- 238000000034 method Methods 0.000 title claims description 13
- 238000001223 reverse osmosis Methods 0.000 title abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 201
- 239000012528 membrane Substances 0.000 claims abstract description 110
- 239000012141 concentrate Substances 0.000 claims abstract description 77
- 239000006096 absorbing agent Substances 0.000 claims abstract description 57
- 230000033001 locomotion Effects 0.000 claims abstract description 50
- 230000009471 action Effects 0.000 claims abstract description 26
- 239000012466 permeate Substances 0.000 claims abstract description 18
- 230000002441 reversible effect Effects 0.000 claims abstract description 5
- 210000004379 membrane Anatomy 0.000 claims description 107
- 238000005086 pumping Methods 0.000 claims description 63
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 13
- 230000010287 polarization Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 4
- 239000000727 fraction Substances 0.000 claims description 3
- 210000000188 diaphragm Anatomy 0.000 abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000010612 desalination reaction Methods 0.000 abstract description 7
- 150000003839 salts Chemical class 0.000 abstract description 6
- 230000007246 mechanism Effects 0.000 abstract description 4
- 239000012527 feed solution Substances 0.000 abstract description 3
- 230000001627 detrimental effect Effects 0.000 abstract description 2
- 239000008213 purified water Substances 0.000 abstract 1
- 238000013022 venting Methods 0.000 abstract 1
- 235000008504 concentrate Nutrition 0.000 description 54
- 239000000047 product Substances 0.000 description 13
- 230000002829 reductive effect Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 5
- 230000003204 osmotic effect Effects 0.000 description 5
- 108091006146 Channels Proteins 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 230000002706 hydrostatic effect Effects 0.000 description 4
- 230000010363 phase shift Effects 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241001052209 Cylinder Species 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- SMDHCQAYESWHAE-UHFFFAOYSA-N benfluralin Chemical compound CCCCN(CC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O SMDHCQAYESWHAE-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012264 purified product Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/30—Wind motors specially adapted for installation in particular locations
- F03D9/32—Wind motors specially adapted for installation in particular locations on moving objects, e.g. vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
-
- 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
- B01D61/06—Energy recovery
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons
- F04B11/0075—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons connected in series
- F04B11/0083—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons connected in series the pistons having different cross-sections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B5/00—Machines or pumps with differential-surface pistons
- F04B5/02—Machines or pumps with differential-surface pistons with double-acting pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0042—Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member
- F04B7/0053—Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member for reciprocating distribution members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/18—Specific valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/24—Specific pressurizing or depressurizing means
- B01D2313/246—Energy recovery means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/62—Application for desalination
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/141—Wind power
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Reciprocating Pumps (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000391627A CA1146087A (en) | 1978-03-13 | 1981-12-07 | Reverse osmosis method and apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78254077A | 1977-03-28 | 1977-03-28 | |
| US782,540 | 1977-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1118365A true CA1118365A (en) | 1982-02-16 |
Family
ID=25126373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000298758A Expired CA1118365A (en) | 1977-03-28 | 1978-03-13 | Reverse osmosis method and apparatus |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS53144472A (enrdf_load_stackoverflow) |
| AU (1) | AU513613B2 (enrdf_load_stackoverflow) |
| CA (1) | CA1118365A (enrdf_load_stackoverflow) |
| DE (1) | DE2812761A1 (enrdf_load_stackoverflow) |
| EG (1) | EG13490A (enrdf_load_stackoverflow) |
| FR (1) | FR2385427A1 (enrdf_load_stackoverflow) |
| GB (2) | GB1601518A (enrdf_load_stackoverflow) |
| IL (1) | IL54291A (enrdf_load_stackoverflow) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4288326A (en) * | 1978-03-14 | 1981-09-08 | Keefer Bowie | Rotary shaft driven reverse osmosis method and apparatus |
| US4367140A (en) * | 1979-11-05 | 1983-01-04 | Sykes Ocean Water Ltd. | Reverse osmosis liquid purification apparatus |
| US4637783A (en) * | 1980-10-20 | 1987-01-20 | Sri International | Fluid motor-pumping apparatus and method for energy recovery |
| GR75052B (enrdf_load_stackoverflow) * | 1981-01-05 | 1984-07-13 | Mesple Jose L R | |
| DE3146588A1 (de) * | 1981-11-25 | 1983-06-30 | Gerhard 7990 Friedrichshafen Hestermann | Geraet zur teilweisen trennung fluessiger loesungen nach dem prinzip der umkehrosmose |
| JPS58161695U (ja) * | 1982-04-20 | 1983-10-27 | 株式会社救命 | 造水器 |
| GB2128101B (en) * | 1982-10-12 | 1986-10-08 | Plessey Co Plc | Reverse osmosis liquid filtration apparatus |
| JPS61118612U (enrdf_load_stackoverflow) * | 1985-01-07 | 1986-07-26 | ||
| FR2596106A1 (fr) * | 1986-03-20 | 1987-09-25 | Deltaqua | Pompe de dessalement |
| JPH029489A (ja) * | 1988-06-29 | 1990-01-12 | Himeji Kishiyou Kk | 造水装置 |
| JPH0220996U (enrdf_load_stackoverflow) * | 1988-07-29 | 1990-02-13 | ||
| DE3923722C2 (de) * | 1989-07-18 | 1997-07-10 | Uraca Pumpen | Kombination von Verdrängerpumpe, insbesondere Kolbenpumpe, und Verdrängermotor, insbesondere Kolbenmotor |
| FR2673172B1 (fr) * | 1991-02-22 | 1995-09-08 | Electricite De France | Dispositif fluidique de deplacement relatif de deux ensembles par application de poussees antagonistes a ces derniers. |
| WO1993002781A1 (en) * | 1991-08-02 | 1993-02-18 | Astroa Pty. Limited | Portable water purification system |
| DE10000874A1 (de) * | 2000-01-12 | 2001-07-19 | Klaus Brinkmann | Ein Koffergerät zur Reinigung von Wasser mit Hilfe von regenerativ erzeugtem Strom |
| GB2363741B (en) * | 2000-06-20 | 2004-08-11 | Finch Internat Ltd | Energy recovery system |
| JP2002346342A (ja) * | 2001-05-24 | 2002-12-03 | Toray Ind Inc | 水処理装置 |
| WO2003031341A1 (de) * | 2001-10-11 | 2003-04-17 | Robert Niederer | Mobiler kubus zur herstellung von energie und reinigen von wasser via umkerosmose und ähnlicher technik. |
| JP4794131B2 (ja) * | 2004-03-16 | 2011-10-19 | アムテック株式会社 | ポンプ装置 |
| CN103256409B (zh) * | 2012-02-15 | 2015-01-07 | 浦坚 | 单向阀组件以及使用该组件的泵和水净化装置 |
| CN104176842A (zh) * | 2013-05-25 | 2014-12-03 | 赵百华 | 便携式手动真空抽水净水机 |
| JP2015003288A (ja) * | 2013-06-20 | 2015-01-08 | アドヴァンス株式会社 | 浄水装置 |
| CN105422520A (zh) * | 2015-12-10 | 2016-03-23 | 广西玉柴机器股份有限公司 | 液体增压器 |
| CN105508168B (zh) * | 2015-12-15 | 2018-02-27 | 重庆亘宇园林景观工程有限公司 | 用于假山上的水流循环系统 |
| GB201620769D0 (en) * | 2016-12-07 | 2017-01-18 | Icon Lifesaver | A drinking bottle |
| IT202000009730A1 (it) | 2020-05-04 | 2021-11-04 | Nuovo Pignone Tecnologie Srl | Compressore alternativo con involucro attorno all'asta del pistone |
| CN114504869B (zh) * | 2022-01-27 | 2023-05-23 | 浙江工业大学 | 一种便携手摇式海水淡化器 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1388254A (en) * | 1920-12-07 | 1921-08-23 | Hans L C Hansen | Pump-piston |
| US2308974A (en) * | 1939-11-01 | 1943-01-19 | Lyndus E Harper | Positive displacement pump |
| US2261469A (en) * | 1940-08-26 | 1941-11-04 | Trabon Engineering Corp | Sleeve type foot valve |
| US2802424A (en) * | 1954-01-20 | 1957-08-13 | Luther E Lee | Pump |
| FR1355682A (fr) * | 1963-02-05 | 1964-03-20 | App S Pour La Manipulation Des | Pompe de dosage |
| US3254607A (en) * | 1963-11-26 | 1966-06-07 | Air Reduction | Pump for a boiling liquid |
| FR1497712A (fr) * | 1965-10-04 | 1967-10-13 | Gen Dynamics Corp | Appareil de purification de liquides |
| US3558242A (en) * | 1969-03-04 | 1971-01-26 | Petersen Candy International L | Pump for desalination plant |
| US3807909A (en) * | 1972-05-01 | 1974-04-30 | Owens Illinois Inc | Pump for dispensing food products |
| JPS5758385B2 (enrdf_load_stackoverflow) * | 1973-08-27 | 1982-12-09 | Daicel Chem | |
| IL51522A0 (en) * | 1976-02-27 | 1977-04-29 | Ocean Water Ltd | Improvements in or relating to water purification by reverse osmosis |
-
1978
- 1978-03-13 CA CA000298758A patent/CA1118365A/en not_active Expired
- 1978-03-15 IL IL54291A patent/IL54291A/xx unknown
- 1978-03-20 AU AU34299/78A patent/AU513613B2/en not_active Expired
- 1978-03-20 GB GB10866/78A patent/GB1601518A/en not_active Expired
- 1978-03-20 GB GB30531/80A patent/GB1601519A/en not_active Expired
- 1978-03-23 DE DE19782812761 patent/DE2812761A1/de active Granted
- 1978-03-24 FR FR7808764A patent/FR2385427A1/fr active Granted
- 1978-03-28 JP JP3591078A patent/JPS53144472A/ja active Granted
- 1978-03-28 EG EG214/78A patent/EG13490A/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| DE2812761C2 (enrdf_load_stackoverflow) | 1989-05-11 |
| AU513613B2 (en) | 1980-12-11 |
| FR2385427A1 (fr) | 1978-10-27 |
| FR2385427B1 (enrdf_load_stackoverflow) | 1985-05-10 |
| AU3429978A (en) | 1979-09-27 |
| JPS641667B2 (enrdf_load_stackoverflow) | 1989-01-12 |
| GB1601518A (en) | 1981-10-28 |
| GB1601519A (en) | 1981-10-28 |
| DE2812761A1 (de) | 1978-10-05 |
| IL54291A (en) | 1981-11-30 |
| EG13490A (en) | 1982-03-31 |
| IL54291A0 (en) | 1978-06-15 |
| JPS53144472A (en) | 1978-12-15 |
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