ES469736A1 - Method for decontaminating the aqueous effluents - Google Patents

Method for decontaminating the aqueous effluents

Info

Publication number
ES469736A1
ES469736A1 ES469736A ES469736A ES469736A1 ES 469736 A1 ES469736 A1 ES 469736A1 ES 469736 A ES469736 A ES 469736A ES 469736 A ES469736 A ES 469736A ES 469736 A1 ES469736 A1 ES 469736A1
Authority
ES
Spain
Prior art keywords
solution
aqueous effluents
decontaminating
concentrated solution
alkaline
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
ES469736A
Other languages
Spanish (es)
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.)
Fiat SpA
Original Assignee
Fiat SpA
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 Fiat SpA filed Critical Fiat SpA
Publication of ES469736A1 publication Critical patent/ES469736A1/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
    • B01D61/422—Electrodialysis
    • B01D61/423—Electrodialysis comprising multiple electrodialysis steps
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/16—Regeneration of process solutions
    • 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
    • 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
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/422—Electrodialysis

Abstract

Process for the decontamination of the acidic and alkaline aqueous effluents of a galvanic treatment plant, characterized by the operations of: mixing the acid and alkaline effluent to obtain a starting solution with a ph comprised between 3.5 and 4.5; subjecting said solution to reverse osmosis to obtain substantially pure water and a concentrated solution and recover from said concentrated solution the metals therein contained by electrodialysis. (Machine-translation by Google Translate, not legally binding)
ES469736A 1977-05-12 1978-05-11 Method for decontaminating the aqueous effluents Expired ES469736A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT68084/77A IT1082821B (en) 1977-05-12 1977-05-12 PROCEDURE FOR THE POLLUTION OF WATER EFFLUENTS OF A GALVANIC TREATMENT PLANT

Publications (1)

Publication Number Publication Date
ES469736A1 true ES469736A1 (en) 1978-12-16

Family

ID=11307716

Family Applications (1)

Application Number Title Priority Date Filing Date
ES469736A Expired ES469736A1 (en) 1977-05-12 1978-05-11 Method for decontaminating the aqueous effluents

Country Status (5)

Country Link
BE (1) BE866919A (en)
ES (1) ES469736A1 (en)
FR (1) FR2390384A1 (en)
GB (1) GB1563480A (en)
IT (1) IT1082821B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533233B1 (en) * 1982-09-17 1986-07-18 Perrier Materiel METHOD FOR RECOVERING METALS FROM DILUTED SOLUTIONS OF THEIR SALTS AND DEVICE FOR IMPLEMENTING SAME
US4655928A (en) * 1983-10-18 1987-04-07 Gnb Incorporated Membrane processes for metal recovery and pollution control in metal process industries
DE3767359D1 (en) * 1986-05-16 1991-02-21 Electroplating Eng METHOD AND DEVICE FOR RECOVERING A PRECIOUS METAL COMPOUND.
GB2385061A (en) * 2002-02-06 2003-08-13 Accentus Plc Process water treatment using electrodialysis

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816587A (en) * 1972-04-17 1974-06-11 Du Pont Selective concentration of gold,silver and copper in aqueous cyanide solutions
DE2537591A1 (en) * 1975-08-23 1977-02-24 Berghof Forschungsinst Regenerating spent chromate baths, exp. to remove zinc - using electrodialysis cells contg. cation exchange membranes
FR2325736A1 (en) * 1975-09-23 1977-04-22 Bonnemay Maurice Purifying chromium contg. solns. from rinsing baths from pickling - by electrodialysis continuously using specified apparatus

Also Published As

Publication number Publication date
FR2390384A1 (en) 1978-12-08
BE866919A (en) 1978-09-01
IT1082821B (en) 1985-05-21
GB1563480A (en) 1980-03-26

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