WO2003013704A3 - Variable pressure closed circuit desalination - Google Patents

Variable pressure closed circuit desalination Download PDF

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Publication number
WO2003013704A3
WO2003013704A3 PCT/IL2002/000636 IL0200636W WO03013704A3 WO 2003013704 A3 WO2003013704 A3 WO 2003013704A3 IL 0200636 W IL0200636 W IL 0200636W WO 03013704 A3 WO03013704 A3 WO 03013704A3
Authority
WO
WIPO (PCT)
Prior art keywords
desalination
pressure
container
salt water
modules
Prior art date
Application number
PCT/IL2002/000636
Other languages
French (fr)
Other versions
WO2003013704A9 (en
WO2003013704A2 (en
Inventor
Avi Efraty
Original Assignee
Avi Efraty
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 Avi Efraty filed Critical Avi Efraty
Publication of WO2003013704A2 publication Critical patent/WO2003013704A2/en
Publication of WO2003013704A3 publication Critical patent/WO2003013704A3/en
Publication of WO2003013704A9 publication Critical patent/WO2003013704A9/en

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
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • 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
    • B01D61/06—Energy recovery
    • 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
    • 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
    • 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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Nanotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A method for sequential closed circuit desalination of a salt water solution by reverse osmosis and an apparatus with at least one circuit that comprises: a container means; one or more desalination modules; lines for conducting the solution from the container to the desalination modules and for recycling desalinated solution from the modules to the container; a circulation means for driving the recycling of the solutions; a pressurizing means for creating sufficient counter pressure to enable reverse osmosis desalination and replacement of released permeate by fresh salt water feed; means for effluent discharge and salt water recharge; means for monitoring the progress of desalination and control means that enable the desalination process to be performed in sequences with either variable pressure or constant pressure applied such that the ratio of applied pressure to osmotic pressure at each stage during the process is maintained above a minimum predetermined value.
PCT/IL2002/000636 2001-08-05 2002-08-04 Variable pressure closed circuit desalination WO2003013704A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL14472401A IL144724A0 (en) 2001-08-05 2001-08-05 Variable pressure closed circuit desalination
IL144724 2001-08-05

Publications (3)

Publication Number Publication Date
WO2003013704A2 WO2003013704A2 (en) 2003-02-20
WO2003013704A3 true WO2003013704A3 (en) 2004-04-15
WO2003013704A9 WO2003013704A9 (en) 2004-05-21

Family

ID=11075664

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2002/000636 WO2003013704A2 (en) 2001-08-05 2002-08-04 Variable pressure closed circuit desalination

Country Status (3)

Country Link
AU (1) AU2002324309A1 (en)
IL (1) IL144724A0 (en)
WO (1) WO2003013704A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7416666B2 (en) 2002-10-08 2008-08-26 Water Standard Company Mobile desalination plants and systems, and methods for producing desalinated water
IL157430A (en) 2003-08-17 2009-08-03 Avi Efraty Apparatus for continuous closed circuit desalination under variable pressure with a single container
IL162713A (en) 2004-06-24 2011-04-28 Desalitech Ltd Apparatus and methods for continuous desalination in closed circuit without containers
GR1005796B (en) * 2006-02-24 2008-01-30 System for the recovery of energy and the reduction of deposits on membranes in a desalination unit (of variable power and supply) by reverse osmosis
US8025804B2 (en) 2006-12-19 2011-09-27 Avi Efraty Continuous closed-circuit desalination method without containers
BRMU8702211U2 (en) * 2007-09-10 2009-04-28 Robson Rojas Romero device introduced into the mixer, liquid and effluent dispenser with web control
MX2017006379A (en) 2014-11-17 2017-08-21 Massachusetts Inst Technology Concentration control in filtration systems, and associated methods.
GB2540603A (en) 2015-07-23 2017-01-25 Ide Technologies Ltd Imroved reverse osmotic process for cleaning water
US10603635B2 (en) 2016-05-04 2020-03-31 Massachusetts Institute Of Technology Multi-stage reverse osmosis systems and methods
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
IL254724B (en) * 2017-09-25 2020-06-30 Efraty Avi A two-stage closed circuit desalination system of super ro characteristics
KR102457920B1 (en) * 2018-08-29 2022-10-25 베올리아 워터 솔루션즈 앤드 테크놀러지스 써포트 Variable Volume Reverse Osmosis Membrane System with High Recovery Rate

Citations (6)

* Cited by examiner, † Cited by third party
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
JPS54128985A (en) * 1978-03-30 1979-10-05 Kobe Steel Ltd Membrane separation method
WO1980000310A1 (en) * 1978-08-07 1980-03-06 Allied Water Corp Water purification process and system
WO1988006475A1 (en) * 1987-03-06 1988-09-07 Szuecs Laszlone Method and apparatus for treating fluids containing foreign materials by membrane filter equipment
US4814086A (en) * 1985-10-03 1989-03-21 Bratt Russell I Method and apparatus for fluid treatment by reverse osmosis
EP0599281A2 (en) * 1992-11-27 1994-06-01 WAT WASSER- UND UMWELTTECHNIK GmbH Process and apparatus for treating liquids by reverse osmosis

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
JPS54128985A (en) * 1978-03-30 1979-10-05 Kobe Steel Ltd Membrane separation method
WO1980000310A1 (en) * 1978-08-07 1980-03-06 Allied Water Corp Water purification process and system
US4814086A (en) * 1985-10-03 1989-03-21 Bratt Russell I Method and apparatus for fluid treatment by reverse osmosis
WO1988006475A1 (en) * 1987-03-06 1988-09-07 Szuecs Laszlone Method and apparatus for treating fluids containing foreign materials by membrane filter equipment
EP0599281A2 (en) * 1992-11-27 1994-06-01 WAT WASSER- UND UMWELTTECHNIK GmbH Process and apparatus for treating liquids by reverse osmosis

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 003, no. 152 (C - 067) 14 December 1979 (1979-12-14) *

Also Published As

Publication number Publication date
AU2002324309A1 (en) 2003-02-24
WO2003013704A9 (en) 2004-05-21
IL144724A0 (en) 2002-06-30
WO2003013704A2 (en) 2003-02-20

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