FR1484920A - Procédé d'adoucissement de l'eau - Google Patents

Procédé d'adoucissement de l'eau

Info

Publication number
FR1484920A
FR1484920A FR66651A FR66651A FR1484920A FR 1484920 A FR1484920 A FR 1484920A FR 66651 A FR66651 A FR 66651A FR 66651 A FR66651 A FR 66651A FR 1484920 A FR1484920 A FR 1484920A
Authority
FR
France
Prior art keywords
water softening
softening process
water
softening
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
FR66651A
Other languages
English (en)
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Application granted granted Critical
Publication of FR1484920A publication Critical patent/FR1484920A/fr
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
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • 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
    • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
    • C02F1/685—Devices for dosing the additives
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/1853—Hardness of water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/12—Condition responsive control

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
FR66651A 1965-06-25 1966-06-23 Procédé d'adoucissement de l'eau Expired FR1484920A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US466998A US3368969A (en) 1965-06-25 1965-06-25 Method of monitoring and controlling water hardness

Publications (1)

Publication Number Publication Date
FR1484920A true FR1484920A (fr) 1967-06-16

Family

ID=23853928

Family Applications (1)

Application Number Title Priority Date Filing Date
FR66651A Expired FR1484920A (fr) 1965-06-25 1966-06-23 Procédé d'adoucissement de l'eau

Country Status (4)

Country Link
US (1) US3368969A (fr)
FR (1) FR1484920A (fr)
GB (1) GB1122690A (fr)
NL (1) NL6608707A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440014A (en) * 1965-09-20 1969-04-22 Nalco Chemical Co Chelometric titration method
US3895913A (en) * 1974-09-06 1975-07-22 Betz Laboratories Photometric test method for chelant residual or deficiency
US4205955A (en) * 1978-09-28 1980-06-03 Hach Chemical Company Calcium and magnesium specific hardness method using aluminum chelate exchange reagent
US4334881A (en) * 1981-01-09 1982-06-15 General Electric Company Method and apparatus for automatic end-point detection in tripolyphosphate sequestration of hardness
JP3301358B2 (ja) 1997-08-27 2002-07-15 三浦工業株式会社 硬度指示薬
JP4120606B2 (ja) * 2004-03-30 2008-07-16 三浦工業株式会社 硬度測定用試薬
US7709265B2 (en) * 2005-03-24 2010-05-04 Johnsondiversey, Inc. Method and system for measuring water hardness
DE102009055007A1 (de) * 2009-12-18 2011-06-22 Judo Wasseraufbereitung GmbH, 71364 Rohwasserhärtebestimmung in einer Wasserbehandlungsanlage über die Leitfähigkeit des Weich- oder Verschnittwassers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235324A (en) * 1964-09-25 1966-02-15 Dow Chemical Co Boiler protection

Also Published As

Publication number Publication date
NL6608707A (fr) 1966-12-27
US3368969A (en) 1968-02-13
GB1122690A (en) 1968-08-07

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