GB450575A - Improvements relating to the treatment of water and aqueous solutions - Google Patents

Improvements relating to the treatment of water and aqueous solutions

Info

Publication number
GB450575A
GB450575A GB11526/35A GB1152635A GB450575A GB 450575 A GB450575 A GB 450575A GB 11526/35 A GB11526/35 A GB 11526/35A GB 1152635 A GB1152635 A GB 1152635A GB 450575 A GB450575 A GB 450575A
Authority
GB
United Kingdom
Prior art keywords
acid
solution
water
substances
salt
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
GB11526/35A
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.)
United Water Softeners Ltd
Original Assignee
United Water Softeners Ltd
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
Priority claimed from US569144A external-priority patent/US2012710A/en
Priority claimed from US662848A external-priority patent/US2127845A/en
Priority claimed from US752961A external-priority patent/US2127486A/en
Application filed by United Water Softeners Ltd filed Critical United Water Softeners Ltd
Publication of GB450575A publication Critical patent/GB450575A/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
    • B01J39/08—Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
    • B01J39/16—Organic material
    • 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
    • B01J39/08—Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
    • B01J39/16—Organic material
    • B01J39/18—Macromolecular compounds
    • B01J39/22—Cellulose or wood; Derivatives thereof
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
    • H03C3/20—Angle modulation by means of variable impedance by means of a variable reactive element the element being a voltage-dependent capacitor

Abstract

Ion-exchange substances obtained by treating wood or naturally-occurring decomposition products of vegetable matter with sulphuric acid, sulphur trioxide or chlor-sulphonic acid are used for treating water or converting aqueous salt solutions into solutions of acids or obtaining a solution of the salt of one acid from a solution of the corresponding salt of another acid. The production of suitable ion-exchange substances is described in Specification 450,574, [Group I]. The substances are regenerated by treatment with acid or salt solutions. The method of obtaining a solution of sodium chloride from one of sodium sulphate is described by way of example. The sulphate solution is passed through the exchange material, sodium ions being retained. On regeneration of the material with hydrochloric acid, the effluent liquid is a solution of sodium chloride.ALSO:Ion-exchange substances obtained by treating wood or naturally-occurring decomposition products of vegetable matter with sulphuric acid, sulphur trioxide or chlor-sulphonic acid are used for treating water or converting aqueous salt solutions into solutions of acids, or obtaining a solution of the salt of one acid from a solution of the corresponding salt of another acid. The production of suitable ion-exchange substances is described in Specification 450,574. The substances are regenerated by treatment with acid or salt solutions. Water which has been treated with one of these substances having an acid reaction may be further treated with a base-exchange material having an alkaline reaction after carbonic acid has been driven off by heating or it may be treated with baryta or other reagent to remove the sulphuric and hydrochloric acids. A water containing sulphate may be obtained by bringing the water into contact with one of the carbonaceous substances having an acid reaction removing carbonic acid by heat treatment, precipitating hydrochloric acid as insoluble chloride and adding alkali or alkaline salt to react with the sulphuric acid to form a soluble sulphate. Or the water after treatment with the carbonaceous substance may be caused to flow quickly over marble or other alkaline earth carbonate, such as dolomite or magnesite. Neutral water may be obtained by mixing water which has been passed through carbonaceous material having an acid reaction with water containing carbonates, produced by passage through ordinary zeolites or otherwise. The method of obtaining a solution of sodium chloride from one of sodium sulphate is described by way of example of the use of the materials. The sulphate solution is passed through the exchange material, sodium ions being retained. On regeneration of the material with hydrochloric acid, the effluent liquid is a solution of sodium chloride.
GB11526/35A 1931-10-16 1935-04-13 Improvements relating to the treatment of water and aqueous solutions Expired GB450575A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US569144A US2012710A (en) 1931-10-16 1931-10-16 Variable condenser
US662848A US2127845A (en) 1933-03-25 1933-03-25 Measuring apparatus
DE450575X 1934-04-13
US752961A US2127486A (en) 1931-10-16 1934-11-14 Phase modulation
US57158A US2127846A (en) 1931-10-16 1936-01-02 Measuring apparatus

Publications (1)

Publication Number Publication Date
GB450575A true GB450575A (en) 1936-07-21

Family

ID=32046089

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11526/35A Expired GB450575A (en) 1931-10-16 1935-04-13 Improvements relating to the treatment of water and aqueous solutions

Country Status (1)

Country Link
GB (1) GB450575A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740983C (en) * 1939-02-15 1943-11-02 Ig Farbenindustrie Ag Process for improving the fastness of dyeings with acetate artificial silk dyes, which are poorly soluble or insoluble in water, on artificial silk made from cellulose esters
DE749553C (en) * 1937-05-22 1944-11-24 Process for the production of cation-exchanging synthetic resins
US2445669A (en) * 1943-06-22 1948-07-20 Sunshine Mining Company Chemical process for production of potable water from nonpotable saline water
US2471213A (en) * 1937-01-22 1949-05-24 Tewin Ind Inc Treatment of aqueous liquids
DE1131601B (en) * 1958-03-31 1962-06-14 Willy Hager Water treatment device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471213A (en) * 1937-01-22 1949-05-24 Tewin Ind Inc Treatment of aqueous liquids
DE749553C (en) * 1937-05-22 1944-11-24 Process for the production of cation-exchanging synthetic resins
DE740983C (en) * 1939-02-15 1943-11-02 Ig Farbenindustrie Ag Process for improving the fastness of dyeings with acetate artificial silk dyes, which are poorly soluble or insoluble in water, on artificial silk made from cellulose esters
US2445669A (en) * 1943-06-22 1948-07-20 Sunshine Mining Company Chemical process for production of potable water from nonpotable saline water
DE1131601B (en) * 1958-03-31 1962-06-14 Willy Hager Water treatment device

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