WO2011004364A1 - Closed circuit desalination retrofit for improved performance of common reverse osmosis systems - Google Patents
Closed circuit desalination retrofit for improved performance of common reverse osmosis systems Download PDFInfo
- Publication number
- WO2011004364A1 WO2011004364A1 PCT/IL2010/000537 IL2010000537W WO2011004364A1 WO 2011004364 A1 WO2011004364 A1 WO 2011004364A1 IL 2010000537 W IL2010000537 W IL 2010000537W WO 2011004364 A1 WO2011004364 A1 WO 2011004364A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- unit
- desalination
- bwro
- closed circuit
- retrofit
- Prior art date
Links
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 55
- 238000001223 reverse osmosis Methods 0.000 title claims description 9
- 238000011084 recovery Methods 0.000 claims abstract description 32
- 239000012267 brine Substances 0.000 claims abstract description 31
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 31
- 239000012141 concentrate Substances 0.000 claims abstract description 14
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 239000012466 permeate Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000000502 dialysis Methods 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000737 periodic effect Effects 0.000 abstract 2
- 238000013461 design Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000010354 integration Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- ARAARKFILLTMEI-CGXWXWIYSA-N CC/C=C(/C)\C=N\C Chemical compound CC/C=C(/C)\C=N\C ARAARKFILLTMEI-CGXWXWIYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
-
- 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
- B01D61/12—Controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/08—Specific process operations in the concentrate stream
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/25—Recirculation, recycling or bypass, e.g. recirculation of concentrate into the feed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/25—Recirculation, recycling or bypass, e.g. recirculation of concentrate into the feed
- B01D2311/252—Recirculation of concentrate
- B01D2311/2523—Recirculation of concentrate to feed side
-
- 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2317/00—Membrane module arrangements within a plant or an apparatus
- B01D2317/04—Elements in parallel
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/026—Treating water for medical or cosmetic purposes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
Definitions
- the present invention relates to a Closed Circuit Desalination Retrofit (CCDR) apparatus for improved performance of common Reverse Osmosis (RO) systems.
- CCDR Closed Circuit Desalination Retrofit
- CCD Closed Circuit Desalination
- BWRO Water Reverse Osmosis
- CCDR Closed Circuit Desalination Retrofit
- the present invention describes a novel CCDR unit fed by pressurized brine effluent (henceforth "pressurized feed”) received from a Common BWRO system which performs a continuous two-step consecutive sequential desalination process; with first-step experienced most time involving Closed Circuit Desalination (CCD) of recycled concentrate mixed with fresh pressurized feed through one membrane module, or more than one membrane modules with respective inlets and outlets connected in parallel; with a second-step involving a Plug Flow Desalination (PFD) process whereby brine in the closed circuit is replaced with fresh pressurized feed at a desired recovery level; and with permeate produced by the integrated CCDR unit either recycled to inlet of the common BWRO system or adds to its permeate production . If feed pressure at the inlet to the CCDR unit is insufficient, a booster pump at inlet to said unit may enable the reaching of an appropriate pressure for a desired desalination recovery level.
- CCD Closed Circuit Desalination
- PFD Plug
- a common BWRO unit with the inventive CCDR unit achieved by means of a conducting line for pressurized brine effluent from the outlet of the former to the inlet of the latter and a conducting line for permeate from the latter to the inlet feed line of the former or, alternatively, a conducting line for combining the produced permeate of the latter and the former together.
- the inventive integrated BWRO-CCDR system enables enhanced feed source recovery concomitant with improved permeate quality and reduced energy demand.
- Fig l is a schematic flow diagram showing the integration of BWRO and CCDR units in a system for high quality permeates
- Fig 2 is a schematic flow diagram showing the integration of BWRO and CCDR units in a system for high desalination recovery.
- Fig. 3 is a schematic diagram of a CCDR unit during a closed circuit desalination mode of operation.
- Fig. 4 is a schematic diagram of a CCDR unit with a permeate pressure booster pump during a closed circuit desalination mode of operation.
- Fig. 5 is a schematic diagram of a CCDR unit with a feed pressure booster pump during a closed circuit desalination mode of operation.
- Fig. 6 is a schematic diagram of a CCDR unit with both a permeate pressure booster pump and a feed pressure booster pumps during a closed circuit desalination mode of operation.
- the inventive systems depicted in Fig. 1 and Fig. 2 propose the adding of a Closed Circuit Desalination Retrofit (CCDR) unit to a common Reverse Osmosis Brackish Water (BWRO) unit in an integrated system for increased recovery and improved quality of permeates.
- CCDR Closed Circuit Desalination Retrofit
- BWRO Reverse Osmosis Brackish Water
- the inventive system depicted in Fig. 2 differs from that in Fig. 1 in some of its permeate conducting lines, since in the former system (Fig.
- the integrated BWRO-CCDR systems described in Fig. 1 and Fig. 2 comprise any common BWRO unit of prior art coupled with the inventive CCDR unit by means of the indicated conducting lines.
- the claims of the present invention are made specifically with regards to the new CCDR unit and its integration with a common BWRO unit into a system of greatly improved performance as compared with that of the latter.
- the core of the invention relates to systems wherein a CCDR unit receives pressurized feed from a common BWRO unit with permeate produced by the CCDR unit either recycled as part of the feed to the BWRO unit according to the system depicted in Fig. 1 or, alternatively, combined with the permeate produced by the BWRO unit according to the system depicted in Fig. 2.
- the CCDR units in the systems depicted in Fig. 1 and Fig. 2 perform most of the time on the basis of Closed Circuit Desalination (CCD) principles with flow rates of pressurized feed and permeate being the same (100% recovery); and part of the time on the basis of Plug Flow Desalination (PFD) principles to enable the rejection of brine effluent from the close circuit of the CCDR unit and its replacement with fresh pressurized feed while desalination is continued at a reduced desalination recovery.
- CCD Closed Circuit Desalination
- PFD Plug Flow Desalination
- the CCDR unit of the embodiment displayed in Fig. 3 comprises a single module (M) with one membrane element (E) and one element spacer (S), a circulation pump (CP) for the recycling of pressurized concentrate from module outlet (MO) to module inlet (MI) through a closed circuit conduit(CC), a pressurized feed (PF) conduit for admitting fresh pressurized feed to the closed circuit via a feed inlet (PFI) positioned upstream of the module inlet (MI), a no-return valve means (NRl, NR2 and NR3) to maintain the desired flow direction in the various parts of the unit, an actuated two-way valve means (AV) to enable occasional replacement of brine effluent with fresh feed in said closed circuit, a manual valve means (MV) to enable the attainment of a desired pressure drop in said closed circuit of the CCDR unit while AV is opened for brine release, a monitoring means such as a flow meter (FM) and an electric conductivity meter (CM) of recycled concentrate, and control means to enable
- the CCDR unit of the integrated systems depicted in Fig.l and Fig.2 is of the preferred embodiment displayed in Fig. 3 for application in cases where the feed flow of pressurized brine received from the BWRO unit is of sufficient pressure to enable the attainment of a desired recovery level.
- the preferred embodiment in Fig. 3 assumes permeate production and delivery at near atmospheric pressure without need for pressure booster means
- the CCDR unit of the integrated system depicted in Fig. 1 is of the preferred embodiment displayed in Fig. 4 for application in cases where the feed supplied to the BWRO unit of said system is under mild pressure (e.g., 2-5 bar).
- the purpose of the installed booster pump (BPl) on the permeate outlet conduit (PO) of said CCDR unit• (Fig. 4) is to raise permeate pressure to the desired inlet pressure of the BWRO unit of the system displayed Fig. 1.
- the CCDR unit of the integrated systems depicted in Fig.l and Fig.2 is of the preferred embodiment displayed in Fig. 5 for application in cases where the feed flow of pressurized brine received from the BWRO unit is of insufficient pressure to enable the attainment of a desired recovery level; therefore, pressure booster means required (BP2).
- BP2 pressure booster means required
- the preferred embodiment in Fig. 5 assumes permeate production and delivery at near atmospheric pressure without need for permeate pressure booster means
- the CCDR unit of the integrated system depicted in Fig. 1 is of the preferred embodiment displayed in Fig. 6 for application in cases where the feed pressure to said unit and the permeate pressure from said unit need to be raised by a pressure booster means (BP2 and BPl, respectively).
- a pressure booster means BP2 and BPl, respectively.
- the method of operation of the integrated systems displayed in Fig. 1 - Fig. 2 proceeds as followed:
- the pressurized brine flow from the common SWRO unit is fully diverted to the inlet of the CCDR unit by the valve means V, an operation whereby all the functions in the latter unit are activated.
- the stopping of pressurize brine flow into the CCDR unit by the valve means V terminates the operation of this unit automatically.
- the inventive CCDR units of the preferred embodiments in Fig. 3— Fig. 6 of the integrated systems displayed in Fig. 1 - Fig. 2 are none autonomous since fully rely on pressurized feed supplied from the BWRO units of the systems. Accordingly, the new inventive method implicates common BWRO units as the pressurized feed source to CCDR units which perform a two-step consecutive sequential process with a closed circuit desalination mode of operation of 100% recovery experienced most of the time and with brief intervals plug flow desalination of reduced recovery taking place occasionally for the discharge of brine from the closed circuit and its replacement with fresh pressurized feed which is the brine effluent of the BWRO units.
- the inventive method may be view as the integration between a single stage BWRO unit and a CCDR unit of multistage desalination capability for the attainment of high recovery with energy efficiency.
- the CCDR units and the integrated systems of the present invention suggest an effective approach for the upgrade of existing inefficient BWRO systems.
- CCDR units of the inventive apparatus and method may comprise more than one module with inlets and outlets of modules connected in parallel to the closed circuit conducting line and that each of the modules may comprise one or more than one membrane element with or without spacers.
- circulation systems Concentrate recycling through the closed circuit of the inventive unit displayed in Fig. 3 - Fig. 6 is done by circulation systems. It will be understood that the circulation systems according to the invention may comprise a single circulation pump, or instead, several circulation pumps, applied simultaneously in parallel and/or in series.
- inventive desalination method may be operated with modular units and/or non-modular desalination apparatus of different designs, as already explained hereinabove in respect of the inventive apparatus and/or units, as long as such apparatus and/or units comprise a closed circuit of conducting line with one module or more than one module with their inlets and outlets connected in parallel to the closed circuit with each module containing one membrane element or more than one membrane elements; circulation systems; pressurized feed conducting lines with or without pressure booster pumps; permeate collection lines; valves means positioned in the closed circuit conducting line for brine discharge; brine removal lines; monitoring devices of pressure, flow, and conductivity; and control means whereby the entire system is operated continuously.
- inventive systems, units and method can apply in general to improve the feed source recovery and permeate quality of any common BWRO system, and specifically, for the upgrade of existing BWRO systems including such which are used for medical dialysis and/or other diverse reverse osmosis applications for the obtainment better quality permeates with lower energy demand.
- a system according to the design depicted in Fig. 1 comprising of a common BWRO system of the type used for Medical Dialysis (MD) with regular membrane element for Brackish Water (e.g., Net Driving Pressure (NDP) of 15 bar under Test Conditions) which is operated with 50% desalination recovery with a feed source of 400 ppm salinity supplied with flow rate of 2.5 m 3 /h under near atmosphere pressure.
- MD Medical Dialysis
- NDP Net Driving Pressure
- CCDR Closed Circuit Desalination Retrofit
- a module (8" with a single low energy membrane element for Brackish Water (e.g., ESPA2+) and a spacer in the length of a single element; a circulation pump (CP) with recycling flow rate of 7.1 m 3 /h; a Flow Meter (FM) monitor of the recycled concentrate; pressure lines (1.5") made of SS316; Electrically Actuated Valve (AV) operated by signals received from a Conductivity Monitor (CM), and No-Return valves (NRl , NR2 and NR3) for flow control in the desired direction in the CCDR unit depicted in Fig. 3.
- CM Conductivity Monitor
- NRl No-Return valves
- the exemplified CCDR unit receives a steady stream (1.25 m3/h) of fixed pressure feed ( ⁇ 14 bar) of 800 ppm salinity from the BWRO unit in the system (Fig. 1) and performs a continuous two-step consecutive sequential desalination process with extended Closed Circuit Desalination intervals ( ⁇ 23 minutes each) of 100% recovery and mean permeate salinity output of 14 ppm; and with brief Plug Flow Desalination intervals ( ⁇ 3 minutes each) of -20% recovery and mean permeate salinity output of 5 ppm during which brine is discharged and the closed circuit recharged with fresh feed.
- the feed volume demand of the BWRO unit in the system described by Fig. 1 is 1,083.3 liters of which 479.2 liters with an average salinity of -14 ppm originate from the CCDR unit in the system and 604.1 liters of 400 ppm salinity supplied from the external source.
- the volume of discharge brine during two-step consecutive sequence of 26 minutes by the CCDR unit of the depicted design in Fig. 3 is about 50 liters, or the volume of concentrate in the closed circuit, and this implied an overall recovery of 91.7% of the external source.
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2012000277A MX348457B (en) | 2009-07-05 | 2010-07-05 | Closed circuit desalination retrofit for improved performance of common reverse osmosis systems. |
CN201080030139.0A CN102548907B (en) | 2009-07-05 | 2010-07-05 | Closed circuit desalination retrofit for improved performance of common reverse osmosis systems |
AU2010269803A AU2010269803B2 (en) | 2009-07-05 | 2010-07-05 | Closed circuit desalination retrofit for improved performance of common reverse osmosis systems |
EP10796804.2A EP2451748B1 (en) | 2009-07-05 | 2010-07-05 | Closed circuit desalination retrofit for improved performance of common reverse osmosis systems |
ES10796804.2T ES2612487T3 (en) | 2009-07-05 | 2010-07-05 | Closed circuit desalination with retrofit to improve the performance of common reverse osmosis systems |
US13/381,960 US20120103906A1 (en) | 2009-07-05 | 2010-07-05 | Closed Circuit Desalination Retrofit For Improved Performance Of Common Reverse Osmosis Systems |
SG2011096245A SG176988A1 (en) | 2009-07-05 | 2010-07-05 | Closed circuit desalination retrofit for improved performance of common reverse osmosis systems |
CA2765367A CA2765367C (en) | 2009-07-05 | 2010-07-05 | Closed circuit desalination retrofit for improved performance of common reverse osmosis systems |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL199700A IL199700A (en) | 2009-07-05 | 2009-07-05 | Closed circuit desalination retrofit for improved performance of common reverse osmosis systems |
IL199700 | 2009-07-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011004364A1 true WO2011004364A1 (en) | 2011-01-13 |
Family
ID=42263749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IL2010/000537 WO2011004364A1 (en) | 2009-07-05 | 2010-07-05 | Closed circuit desalination retrofit for improved performance of common reverse osmosis systems |
Country Status (14)
Country | Link |
---|---|
US (1) | US20120103906A1 (en) |
EP (1) | EP2451748B1 (en) |
KR (1) | KR101578470B1 (en) |
CN (1) | CN102548907B (en) |
AU (1) | AU2010269803B2 (en) |
CA (1) | CA2765367C (en) |
CL (1) | CL2012000005A1 (en) |
ES (1) | ES2612487T3 (en) |
IL (1) | IL199700A (en) |
MX (1) | MX348457B (en) |
PL (1) | PL2451748T3 (en) |
PT (1) | PT2451748T (en) |
SG (1) | SG176988A1 (en) |
WO (1) | WO2011004364A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013186481A1 (en) * | 2012-06-15 | 2013-12-19 | Osmotech | Device and method for producing purified water, especially for the pharmaceutical industry |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10245556B2 (en) * | 2012-04-15 | 2019-04-02 | Ben Gurion University Of The Negev Research And Development Authority | Method and apparatus for effecting high recovery desalination with pressure driven membranes |
CN110267723A (en) * | 2016-12-12 | 2019-09-20 | A.O.史密斯公司 | The water filtering system of total dissolved solidss creep effect is reduced by recycling |
IL251499B (en) * | 2017-04-02 | 2019-02-28 | Efraty Avi | Hydraulic-arm aided closed circuit batch-ro desalination apparatus of low energy and high recovery prospects |
EP4173695A1 (en) * | 2021-10-29 | 2023-05-03 | Grundfos Holding A/S | Membrane filtration system |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2622461A1 (en) | 1976-05-20 | 1977-11-24 | Didier Werke Ag | Reverse osmosis system - having separate pressurisation and recirculating pumps |
US4814086A (en) | 1985-10-03 | 1989-03-21 | Bratt Russell I | Method and apparatus for fluid treatment by reverse osmosis |
US4983301A (en) | 1987-03-06 | 1991-01-08 | Szuecz Laszlone | Method and apparatus for treating fluids containing foreign materials by membrane filter equipment |
EP1029583A1 (en) | 1998-06-18 | 2000-08-23 | Toray Industries, Inc. | Spiral reverse osmosis membrane element, reverse osmosis membrane module using it, device and method for reverse osmosis separation incorporating the module |
US6267891B1 (en) | 1997-03-03 | 2001-07-31 | Zenon Environmental Inc. | High purity water production using ion exchange |
WO2002009855A1 (en) | 1999-03-19 | 2002-02-07 | Pump Engineering, Inc. | Method and apparatus for improving efficiency of a reverse osmosis system |
US6468431B1 (en) | 1999-11-02 | 2002-10-22 | Eli Oklelas, Jr. | Method and apparatus for boosting interstage pressure in a reverse osmosis system |
US20040245177A1 (en) * | 2002-10-16 | 2004-12-09 | Anthony Pipes | Method and apparatus for parallel desalting |
WO2005016830A2 (en) | 2003-08-17 | 2005-02-24 | Avi Efraty | Continuous closed-circuit desalination apparatus with single container |
WO2006001007A2 (en) | 2004-06-24 | 2006-01-05 | Avi Efraty | Continuous closed-circuit desalination apparatus without containers |
US20080230476A1 (en) * | 2003-12-07 | 2008-09-25 | Jack Gilron | Method and System for Increasing Recovery and Preventing Precipitation Fouling in Pressure-Driven Membrane Processes |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4574049B1 (en) * | 1984-06-04 | 1999-02-02 | Ionpure Filter Us Inc | Reverse osmosis system |
US5238574A (en) * | 1990-06-25 | 1993-08-24 | Kawasaki Jukogyo Kabushiki Kaisha | Method and apparatus having reverse osmosis membrane for concentrating solution |
CA2464416C (en) * | 2001-11-05 | 2012-01-03 | Bionomics Ltd. | Apparatus and method for producing purified water having high microbiological purity |
CN201201922Y (en) * | 2008-04-11 | 2009-03-04 | 南京中电联环保工程有限公司 | Advanced treatment apparatus for recycling condensate water |
-
2009
- 2009-07-05 IL IL199700A patent/IL199700A/en active IP Right Grant
-
2010
- 2010-07-05 US US13/381,960 patent/US20120103906A1/en not_active Abandoned
- 2010-07-05 MX MX2012000277A patent/MX348457B/en active IP Right Grant
- 2010-07-05 PL PL10796804T patent/PL2451748T3/en unknown
- 2010-07-05 WO PCT/IL2010/000537 patent/WO2011004364A1/en active Application Filing
- 2010-07-05 CA CA2765367A patent/CA2765367C/en not_active Expired - Fee Related
- 2010-07-05 PT PT107968042T patent/PT2451748T/en unknown
- 2010-07-05 AU AU2010269803A patent/AU2010269803B2/en not_active Ceased
- 2010-07-05 ES ES10796804.2T patent/ES2612487T3/en active Active
- 2010-07-05 SG SG2011096245A patent/SG176988A1/en unknown
- 2010-07-05 CN CN201080030139.0A patent/CN102548907B/en not_active Expired - Fee Related
- 2010-07-05 KR KR1020127003117A patent/KR101578470B1/en active IP Right Grant
- 2010-07-05 EP EP10796804.2A patent/EP2451748B1/en active Active
-
2012
- 2012-01-03 CL CL2012000005A patent/CL2012000005A1/en unknown
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2622461A1 (en) | 1976-05-20 | 1977-11-24 | Didier Werke Ag | Reverse osmosis system - having separate pressurisation and recirculating pumps |
US4814086A (en) | 1985-10-03 | 1989-03-21 | Bratt Russell I | Method and apparatus for fluid treatment by reverse osmosis |
US4983301A (en) | 1987-03-06 | 1991-01-08 | Szuecz Laszlone | Method and apparatus for treating fluids containing foreign materials by membrane filter equipment |
US6267891B1 (en) | 1997-03-03 | 2001-07-31 | Zenon Environmental Inc. | High purity water production using ion exchange |
EP1029583A1 (en) | 1998-06-18 | 2000-08-23 | Toray Industries, Inc. | Spiral reverse osmosis membrane element, reverse osmosis membrane module using it, device and method for reverse osmosis separation incorporating the module |
WO2002009855A1 (en) | 1999-03-19 | 2002-02-07 | Pump Engineering, Inc. | Method and apparatus for improving efficiency of a reverse osmosis system |
US6468431B1 (en) | 1999-11-02 | 2002-10-22 | Eli Oklelas, Jr. | Method and apparatus for boosting interstage pressure in a reverse osmosis system |
US20040245177A1 (en) * | 2002-10-16 | 2004-12-09 | Anthony Pipes | Method and apparatus for parallel desalting |
WO2005016830A2 (en) | 2003-08-17 | 2005-02-24 | Avi Efraty | Continuous closed-circuit desalination apparatus with single container |
US20080230476A1 (en) * | 2003-12-07 | 2008-09-25 | Jack Gilron | Method and System for Increasing Recovery and Preventing Precipitation Fouling in Pressure-Driven Membrane Processes |
WO2006001007A2 (en) | 2004-06-24 | 2006-01-05 | Avi Efraty | Continuous closed-circuit desalination apparatus without containers |
US20080023410A1 (en) | 2004-06-24 | 2008-01-31 | Avi Efraty | Continuous Closed-Circuit Desalination Apparatus Without Containers |
Non-Patent Citations (1)
Title |
---|
See also references of EP2451748A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013186481A1 (en) * | 2012-06-15 | 2013-12-19 | Osmotech | Device and method for producing purified water, especially for the pharmaceutical industry |
FR2991979A1 (en) * | 2012-06-15 | 2013-12-20 | Osmotech | DEVICE AND METHOD FOR THE PRODUCTION OF PURIFIED WATER, IN PARTICULAR FOR THE PHARMACEUTICAL INDUSTRY. |
Also Published As
Publication number | Publication date |
---|---|
IL199700A (en) | 2017-06-29 |
ES2612487T3 (en) | 2017-05-17 |
EP2451748A4 (en) | 2014-01-15 |
PT2451748T (en) | 2017-01-31 |
KR101578470B1 (en) | 2015-12-17 |
MX2012000277A (en) | 2012-04-30 |
CN102548907B (en) | 2015-04-29 |
EP2451748B1 (en) | 2016-11-02 |
SG176988A1 (en) | 2012-01-30 |
CA2765367C (en) | 2018-06-12 |
IL199700A0 (en) | 2010-04-15 |
KR20120049870A (en) | 2012-05-17 |
EP2451748A1 (en) | 2012-05-16 |
CN102548907A (en) | 2012-07-04 |
AU2010269803B2 (en) | 2016-07-14 |
CA2765367A1 (en) | 2011-01-13 |
PL2451748T3 (en) | 2017-04-28 |
US20120103906A1 (en) | 2012-05-03 |
MX348457B (en) | 2017-06-14 |
AU2010269803A1 (en) | 2012-01-12 |
CL2012000005A1 (en) | 2012-09-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10099179B2 (en) | Reverse osmosis system | |
EP1680363B1 (en) | Continuous closed-circuit desalination apparatus with single container | |
AU2010269803B2 (en) | Closed circuit desalination retrofit for improved performance of common reverse osmosis systems | |
US10159939B2 (en) | Reverse osmosis system | |
CN205295018U (en) | Portable degree of depth water processing system | |
US20080217222A1 (en) | Continuous Membrane Filter Separation of Suspended Particles in Closed Circuit | |
WO2010111291A2 (en) | Point of use recycling system for cmp slurry | |
AU2017261288B2 (en) | Electrochemical system with concentration recirculation in cyclic batch mode | |
US11198096B1 (en) | Pressure-exchange assisted closed circuit desalination systems for continuous desalination of low energy and high recovery under fixed flow and variable pressure conditions | |
CN103408152A (en) | Multistage purification system of high purity water | |
WO2012175804A1 (en) | High efficiency membrane filtration | |
CN206886876U (en) | Intelligent high-purity water device | |
CN101870533A (en) | Pure water generating device | |
CN211963757U (en) | A receive and strain multistage continuous filtration system of formula membrane of book for purifying lactic acid | |
JP2013252502A (en) | Device for desalination of salt water and water producing method | |
KR101649741B1 (en) | an apparatus for concentrating sap | |
CN220012299U (en) | Ultrafiltration water tank device and reverse osmosis flushing pipeline system | |
CN211328447U (en) | Water purifier water purification system | |
CN211328448U (en) | Water purifier water purification system | |
CN210855611U (en) | Preparation system of sterile water for medical treatment | |
CN216106311U (en) | Water purifier | |
CN215102338U (en) | Primary desalting system based on integration of activated carbon filter and reverse osmosis device | |
CN202265461U (en) | Desalinating system with combined high-pressure pump | |
CN214990448U (en) | Ultrafiltration membrane water purification equipment | |
CN106430761A (en) | Vehicle-mounted mobile type comprehensive emergency water purification device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080030139.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10796804 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2765367 Country of ref document: CA Ref document number: 2010269803 Country of ref document: AU Ref document number: 5023/KOLNP/2011 Country of ref document: IN |
|
REEP | Request for entry into the european phase |
Ref document number: 2010796804 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010796804 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13381960 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2012/000277 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1201000013 Country of ref document: TH |
|
ENP | Entry into the national phase |
Ref document number: 2010269803 Country of ref document: AU Date of ref document: 20100705 Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20127003117 Country of ref document: KR Kind code of ref document: A |