GB1429318A - Method of purifying water - Google Patents

Method of purifying water

Info

Publication number
GB1429318A
GB1429318A GB632573A GB632573A GB1429318A GB 1429318 A GB1429318 A GB 1429318A GB 632573 A GB632573 A GB 632573A GB 632573 A GB632573 A GB 632573A GB 1429318 A GB1429318 A GB 1429318A
Authority
GB
United Kingdom
Prior art keywords
silver chloride
agcl
remove
plates
excess
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
GB632573A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 JP1459172A external-priority patent/JPS5144339B2/ja
Priority claimed from JP3227072A external-priority patent/JPS521586B2/ja
Priority claimed from JP6077772A external-priority patent/JPS5139785B2/ja
Priority claimed from JP9206972A external-priority patent/JPS523493B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1429318A publication Critical patent/GB1429318A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C02F1/505—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment by oligodynamic treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/23—Solid substances, e.g. granules, powders, blocks, tablets
    • A61L2/238—Metals or alloys, e.g. oligodynamic metals
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G5/00—Compounds of silver

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Water Treatment By Sorption (AREA)
  • Catalysts (AREA)

Abstract

1429318 Water purification; silver chloride MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 8 Feb 1973 [9 Feb 1972 30 March 1972 16 June 1972 12 Sept 1972] 6325/73 Headings C1A and C1C Water is bacteriocidally purified by treatment with silver chloride which has contained chlorine in excess of the stoichiometric amount and has been heated to remove the excess chlorine, the silver chloride being used in the form of a solid plate, suitably of a size 5Î5 cm. and of a thickness 0À5 mm. Sufficient of the silver chloride plates may be used to provide a surface area of 20-2000 cm.<SP>2</SP> per litre of water treated. Weighting substances may be incorporated. The silver chloride plates may be prepared from commercial AgCl powder by shaping it into plate form and then heating to remove the excess chlorine, e.g. by hot rolling at 400‹ C. Alternatively, the crude AgCl may be heated to above its M.P. to remove the excess chlorine and then either moulded to plate form and hot rolled at 150-300‹ C., or the molten AgCl may be picked up on a cooled cylinder rotating in the molten surface, the resulting film of purified AgCl being peeled off and cut into plates.
GB632573A 1972-02-09 1973-02-08 Method of purifying water Expired GB1429318A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1459172A JPS5144339B2 (en) 1972-02-09 1972-02-09
JP3227072A JPS521586B2 (en) 1972-03-30 1972-03-30
JP6077772A JPS5139785B2 (en) 1972-06-16 1972-06-16
JP9206972A JPS523493B2 (en) 1972-09-12 1972-09-12

Publications (1)

Publication Number Publication Date
GB1429318A true GB1429318A (en) 1976-03-24

Family

ID=27456232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB632573A Expired GB1429318A (en) 1972-02-09 1973-02-08 Method of purifying water

Country Status (4)

Country Link
CA (1) CA1001551A (en)
DE (1) DE2305951A1 (en)
FR (1) FR2171310B1 (en)
GB (1) GB1429318A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749537A (en) * 1981-04-02 1988-06-07 Medichem Aktiengesellschaft Process for the production of formed members for the disinfection of water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749537A (en) * 1981-04-02 1988-06-07 Medichem Aktiengesellschaft Process for the production of formed members for the disinfection of water

Also Published As

Publication number Publication date
DE2305951A1 (en) 1973-08-16
FR2171310B1 (en) 1977-06-10
FR2171310A1 (en) 1973-09-21
CA1001551A (en) 1976-12-14

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930206