GB1432020A - Recovery of spent regenerating solutions by electrodialysis - Google Patents

Recovery of spent regenerating solutions by electrodialysis

Info

Publication number
GB1432020A
GB1432020A GB2312973A GB2312973A GB1432020A GB 1432020 A GB1432020 A GB 1432020A GB 2312973 A GB2312973 A GB 2312973A GB 2312973 A GB2312973 A GB 2312973A GB 1432020 A GB1432020 A GB 1432020A
Authority
GB
United Kingdom
Prior art keywords
regenerating
spent
solution
exchangers
via valves
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
Application number
GB2312973A
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.)
Illinois Water Treatment Co
Original Assignee
Illinois Water Treatment Co
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 Illinois Water Treatment Co filed Critical Illinois Water Treatment Co
Publication of GB1432020A publication Critical patent/GB1432020A/en
Expired 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
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • 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
    • B01D61/58—Multistep processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • 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
    • B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
    • 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
    • B01D2311/06—Specific process operations in the permeate stream
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

1432020 Regeneration of ion-exchangers ILLINOIS WATER TREATMENT CO 15 May 1973 [15 May 1972] 23129/73 Heading B1J [Also in Division C7] Spent regenerating solution for reuse in an ion exchange system having at least one ion exchanger is recovered by removing undesirable contaminants therefrom by precipitation, and converting it by electrodialysis to provide regenerating solution for regenerating the ion exchanger of the system. As shown, spent cation and/or anion exchange solution, e.g. obtained by rinsing with water via valves 10, 12 excess regenerating solutions from cation, anion and/or mixed bed exchangers 14, 16, 20 of a deionisation system and supplied via valves 22, 24, 65 to a holding tank 26, after concentration by use of a reverse osmosis unit 66 and precipitation of Ca and Mg by addition of line and/or soda ash followed by sodium phosphate via valve 36, is converted in electrodialysis cell 38 to regenerate acid e.g. HCl or H 2 SO 4 and/or alkali e.g. NaOH, being respectively fed to storage tanks 44, 48 via valves 42, 46 for reuse in the exchangers 14, 16, 20 via valves 50, 59 and 52, 63. The deionisation system may be used to treat raw or lime softened water or aqueous solutions of chemicals. NaCl or Na 2 SO 4 (or NaNO 3 ) may be added to the spent solution, after removal of contaminants, via valve 40.
GB2312973A 1972-05-15 1973-05-15 Recovery of spent regenerating solutions by electrodialysis Expired GB1432020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25305472A 1972-05-15 1972-05-15

Publications (1)

Publication Number Publication Date
GB1432020A true GB1432020A (en) 1976-04-14

Family

ID=22958643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2312973A Expired GB1432020A (en) 1972-05-15 1973-05-15 Recovery of spent regenerating solutions by electrodialysis

Country Status (4)

Country Link
JP (1) JPS4949869A (en)
CA (1) CA1015075A (en)
DE (1) DE2324131A1 (en)
GB (1) GB1432020A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171988A (en) * 1985-03-07 1986-09-10 Belco Pollution Control Corp Integral water demineralizer system and method
US4880513A (en) * 1986-06-20 1989-11-14 The Graver Company Method and apparatus for generating acid and base regenerants and the use thereof to regenerate ion-exchange resins
WO2006097762A2 (en) * 2005-03-18 2006-09-21 The Boc Group Plc Improvements in or relating to the regeneration of water treatment substrates
WO2014181054A1 (en) * 2013-05-07 2014-11-13 Eurodia Industrie Sa Method for recirculating a reprocessing effluent containing chloride ions

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5110175A (en) * 1974-07-17 1976-01-27 Ebara Infilco
JPS5388695A (en) * 1977-01-13 1978-08-04 Nippon Beet Sugar Mfg Method of recovering reusable sodium chloride
US4655928A (en) * 1983-10-18 1987-04-07 Gnb Incorporated Membrane processes for metal recovery and pollution control in metal process industries
US5352345A (en) * 1991-05-07 1994-10-04 Alliedsignal Inc. Ion exchange resin regenerant waste recovery and recycling via bipolar membranes
DE4312600C2 (en) * 1993-04-17 1995-09-28 Judo Wasseraufbereitung Small desalination plant based on ion exchangers with electrolytically producible regeneration agents

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171988A (en) * 1985-03-07 1986-09-10 Belco Pollution Control Corp Integral water demineralizer system and method
US4648976A (en) * 1985-03-07 1987-03-10 Belco Pollution Control Corporation Integral water demineralizer system and method
US4880513A (en) * 1986-06-20 1989-11-14 The Graver Company Method and apparatus for generating acid and base regenerants and the use thereof to regenerate ion-exchange resins
AU604482B2 (en) * 1986-06-20 1990-12-20 Graver Company, The Method and apparatus for generating acid and base regenerants and use thereof to regenerate ion-exchange resins
WO2006097762A2 (en) * 2005-03-18 2006-09-21 The Boc Group Plc Improvements in or relating to the regeneration of water treatment substrates
WO2006097762A3 (en) * 2005-03-18 2007-05-18 Boc Group Plc Improvements in or relating to the regeneration of water treatment substrates
US7887707B2 (en) 2005-03-18 2011-02-15 The Boc Group Limited Regeneration of water treatment substrates
WO2014181054A1 (en) * 2013-05-07 2014-11-13 Eurodia Industrie Sa Method for recirculating a reprocessing effluent containing chloride ions
FR3005428A1 (en) * 2013-05-07 2014-11-14 Eurodia Ind Sa METHOD FOR RECYCLING A REGENERATION EFFLUENT COMPRISING CHLORIDE IONS
US9962658B2 (en) 2013-05-07 2018-05-08 Eurodia Industrie Sa Method for recirculating a reprocessing effluent comprising chloride ions

Also Published As

Publication number Publication date
DE2324131A1 (en) 1973-11-29
CA1015075A (en) 1977-08-02
JPS4949869A (en) 1974-05-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920515