FR2362083A1 - Procede de defluoration des eaux industrielles - Google Patents
Procede de defluoration des eaux industriellesInfo
- Publication number
- FR2362083A1 FR2362083A1 FR7625540A FR7625540A FR2362083A1 FR 2362083 A1 FR2362083 A1 FR 2362083A1 FR 7625540 A FR7625540 A FR 7625540A FR 7625540 A FR7625540 A FR 7625540A FR 2362083 A1 FR2362083 A1 FR 2362083A1
- Authority
- FR
- France
- Prior art keywords
- lime
- flocculating
- effluent
- calcium fluoride
- effluent water
- 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.)
- Withdrawn
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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/22—Fluorides
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/583—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing fluoride or fluorine compounds
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Il utilise une neutralisation par la chaux ordinaire de l'acide fluorhydrique, et une séparation physique du fluorure de calcium obtenu, par floculation et décantation très rapide. Le surnageant est parfaitement limpide, et peut être envoyé à l'égout après redressement éventuel du pH. Le procedé peut être utilisé pour le traitement des rejets des industries utilisant le fluor, telles que verreries, ou traitement de surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7625540A FR2362083A1 (fr) | 1976-08-19 | 1976-08-19 | Procede de defluoration des eaux industrielles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7625540A FR2362083A1 (fr) | 1976-08-19 | 1976-08-19 | Procede de defluoration des eaux industrielles |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2362083A1 true FR2362083A1 (fr) | 1978-03-17 |
Family
ID=9177084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7625540A Withdrawn FR2362083A1 (fr) | 1976-08-19 | 1976-08-19 | Procede de defluoration des eaux industrielles |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2362083A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2627481A1 (fr) * | 1988-02-24 | 1989-08-25 | Hacker Maschinen Gmbh | Procede pour epurer des eaux usees de l'industrie du verre |
US5443741A (en) * | 1990-11-19 | 1995-08-22 | Imperial Chemical Industries Plc | Treatment of dilute acidic solutions |
FR2771727A1 (fr) * | 1997-11-28 | 1999-06-04 | Sgs Thomson Microelectronics | Defluoruration d'eaux usees |
-
1976
- 1976-08-19 FR FR7625540A patent/FR2362083A1/fr not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2627481A1 (fr) * | 1988-02-24 | 1989-08-25 | Hacker Maschinen Gmbh | Procede pour epurer des eaux usees de l'industrie du verre |
US5443741A (en) * | 1990-11-19 | 1995-08-22 | Imperial Chemical Industries Plc | Treatment of dilute acidic solutions |
FR2771727A1 (fr) * | 1997-11-28 | 1999-06-04 | Sgs Thomson Microelectronics | Defluoruration d'eaux usees |
US6436297B1 (en) | 1997-11-28 | 2002-08-20 | Stmicroelectronics S.A. | Defluoridation of waste water |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |