GB1122690A - Water softening process - Google Patents
Water softening processInfo
- Publication number
- GB1122690A GB1122690A GB28191/66A GB2819166A GB1122690A GB 1122690 A GB1122690 A GB 1122690A GB 28191/66 A GB28191/66 A GB 28191/66A GB 2819166 A GB2819166 A GB 2819166A GB 1122690 A GB1122690 A GB 1122690A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- hardness
- sample
- sequestering agent
- producing substance
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 2
- 239000003352 sequestering agent Substances 0.000 abstract 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 abstract 2
- 150000003839 salts Chemical class 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 abstract 1
- -1 MgSO4 Chemical class 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 abstract 1
- 235000019341 magnesium sulphate Nutrition 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
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)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (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)
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 |
|---|---|
| GB1122690A true GB1122690A (en) | 1968-08-07 |
Family
ID=23853928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28191/66A Expired GB1122690A (en) | 1965-06-25 | 1966-06-23 | Water softening process |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3368969A (enExample) |
| FR (1) | FR1484920A (enExample) |
| GB (1) | GB1122690A (enExample) |
| NL (1) | NL6608707A (enExample) |
Families Citing this family (8)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3235324A (en) * | 1964-09-25 | 1966-02-15 | Dow Chemical Co | Boiler protection |
-
1965
- 1965-06-25 US US466998A patent/US3368969A/en not_active Expired - Lifetime
-
1966
- 1966-06-23 GB GB28191/66A patent/GB1122690A/en not_active Expired
- 1966-06-23 FR FR66651A patent/FR1484920A/fr not_active Expired
- 1966-06-23 NL NL6608707A patent/NL6608707A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3368969A (en) | 1968-02-13 |
| FR1484920A (fr) | 1967-06-16 |
| NL6608707A (enExample) | 1966-12-27 |
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