FR2046510A5 - Water decarbonisation process - Google Patents

Water decarbonisation process

Info

Publication number
FR2046510A5
FR2046510A5 FR7015132A FR7015132A FR2046510A5 FR 2046510 A5 FR2046510 A5 FR 2046510A5 FR 7015132 A FR7015132 A FR 7015132A FR 7015132 A FR7015132 A FR 7015132A FR 2046510 A5 FR2046510 A5 FR 2046510A5
Authority
FR
France
Prior art keywords
water
calcium
neutral
solutions
magnesium
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
FR7015132A
Other languages
French (fr)
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Application granted granted Critical
Publication of FR2046510A5 publication Critical patent/FR2046510A5/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
    • B01J39/04—Processes using organic exchangers
    • B01J39/07—Processes using organic exchangers in the weakly acidic form

Abstract

The efficiency of cation exchangers containing carbonic acid groups in decarbonising water or aqueous solutions is increased by adding to the water neutral base salts as solutions of calcium and/or magnesium chlorides, sulphates or nitrates, sufficient to raise the total hardness slightly above the carbonate hardness. Use of neutral regeneration products of weakly acid cation exchanger, necessarily containing calcium and magnesium salts, increases the output of purified water and allows economies in purchase of chemicals and by use of small ion exchange filters.
FR7015132A 1969-04-24 1970-04-24 Water decarbonisation process Expired FR2046510A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691920763 DE1920763A1 (en) 1969-04-24 1969-04-24 Process for the treatment of water containing sodium hydrogen carbonate

Publications (1)

Publication Number Publication Date
FR2046510A5 true FR2046510A5 (en) 1971-03-05

Family

ID=5732131

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7015132A Expired FR2046510A5 (en) 1969-04-24 1970-04-24 Water decarbonisation process

Country Status (2)

Country Link
DE (1) DE1920763A1 (en)
FR (1) FR2046510A5 (en)

Also Published As

Publication number Publication date
DE1920763A1 (en) 1970-11-05

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Legal Events

Date Code Title Description
ST Notification of lapse