GB490972A - Improvements in the treatment of water - Google Patents
Improvements in the treatment of waterInfo
- Publication number
- GB490972A GB490972A GB24912/37A GB2491237A GB490972A GB 490972 A GB490972 A GB 490972A GB 24912/37 A GB24912/37 A GB 24912/37A GB 2491237 A GB2491237 A GB 2491237A GB 490972 A GB490972 A GB 490972A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- beds
- subjected
- fluorides
- acid
- 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
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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Removal Of Specific Substances (AREA)
Abstract
To remove fluorides from water the water is subjected to the action of materials which are capable of removing the fluorides from water and which, when they are exhausted can be regenerated for treatment of further water by successive treatments with dilute alkali and dilute acid. As examples of materials for treating the fluoride containing water dried granular metallic oxide gels are mentioned such as hydrated ferric oxide and hydrated alumina: chromium borate, mixed oxides of iron and manganese, bauxite, bog iron ore and activated carbon may also be used. Silica is generally removed with the fluorides. In operation the fluoride removing material is preferably employed in pervious beds and the water is passed therethrough till the beds are exhausted: the beds are then subjected to the double regenerating treatment, solutions of an alkali such as caustic soda, or ammonia, and then of an acid such as acetic, with or without sodium acetate, sulphuric acid, hydrochloric acid, or salts which hydrolyse to give acids such as aluminium sulphate, ferric chloride and ferric sulphate, being passed through them, the beds being washed between and after the treatments with raw water. Saline water containing fluorine compounds which has been treated with a hydrogen ion exchange substance and so rendered acidic may be subjected to the action of the material for removing fluorine compounds.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US490972XA | 1936-09-12 | 1936-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB490972A true GB490972A (en) | 1938-08-24 |
Family
ID=21958025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24912/37A Expired GB490972A (en) | 1936-09-12 | 1937-09-13 | Improvements in the treatment of water |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB490972A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ301421B6 (en) * | 1998-04-01 | 2010-02-24 | Alcan International Limited | Water treatment method |
| EP2990383A1 (en) * | 2014-08-25 | 2016-03-02 | RWB Groupe SA | A method and a system for filtering liquid |
-
1937
- 1937-09-13 GB GB24912/37A patent/GB490972A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ301421B6 (en) * | 1998-04-01 | 2010-02-24 | Alcan International Limited | Water treatment method |
| EP2990383A1 (en) * | 2014-08-25 | 2016-03-02 | RWB Groupe SA | A method and a system for filtering liquid |
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