FR2448939A1 - Sepn. of colloids from aq. medium by flotation - after treating successively with two polyelectrolytes - Google Patents
Sepn. of colloids from aq. medium by flotation - after treating successively with two polyelectrolytesInfo
- Publication number
- FR2448939A1 FR2448939A1 FR7903575A FR7903575A FR2448939A1 FR 2448939 A1 FR2448939 A1 FR 2448939A1 FR 7903575 A FR7903575 A FR 7903575A FR 7903575 A FR7903575 A FR 7903575A FR 2448939 A1 FR2448939 A1 FR 2448939A1
- Authority
- FR
- France
- Prior art keywords
- flotation
- sepn
- colloids
- medium
- polyelectrolytes
- 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.)
- Granted
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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0205—Separation of non-miscible liquids by gas bubbles or moving solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/047—Breaking emulsions with separation aids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/016—Macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/002—Coagulants and Flocculants
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (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)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The process for the sepn. by flotation of organic or mineral colloids from an aq. or aq. emulsion medium comprises treating the medium before flotation successively with two polymers. The first is a polyelectrolyte of M. W. 1 to 5 x 105 having an coagulating effect and having a cationicity of 80-100%. The second is a polyelectrolyte of M. W. 1 to 6 x 106 having a flocculating effect. The process may be applied to surface water or to urban or industrial waste water. It enables a faster flotation rate and a lower volume of sludge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7903575A FR2448939A1 (en) | 1979-02-13 | 1979-02-13 | Sepn. of colloids from aq. medium by flotation - after treating successively with two polyelectrolytes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7903575A FR2448939A1 (en) | 1979-02-13 | 1979-02-13 | Sepn. of colloids from aq. medium by flotation - after treating successively with two polyelectrolytes |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2448939A1 true FR2448939A1 (en) | 1980-09-12 |
FR2448939B1 FR2448939B1 (en) | 1983-06-24 |
Family
ID=9221890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7903575A Granted FR2448939A1 (en) | 1979-02-13 | 1979-02-13 | Sepn. of colloids from aq. medium by flotation - after treating successively with two polyelectrolytes |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2448939A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982001324A1 (en) * | 1980-10-13 | 1982-04-29 | Jacob Weitman | Method and apparatus for the separation of preferably gaseous and difficultly condensable contaminations from a gas |
DE3152439A1 (en) * | 1979-10-31 | 1982-09-23 | P Barberet | RECUPERATOR-DISSIPATOR OF CALORIES |
FR2512006A1 (en) * | 1981-08-27 | 1983-03-04 | Lambert Jean Pierre | PROCESS FOR CLARIFYING WASTEWATER |
EP0082809A1 (en) * | 1981-12-18 | 1983-06-29 | Benno Perren (verstorben) | Process and apparatus for the continuous separation of suspended matter from a polluted liquid |
WO1992008533A1 (en) * | 1990-11-15 | 1992-05-29 | Multiserv International Limited | Treatment of dispersions |
EP0524039A1 (en) * | 1991-07-19 | 1993-01-20 | Degremont | Process and apparatus for water treatment |
FR2839073A1 (en) * | 2002-04-26 | 2003-10-31 | Sucre Rech & Dev | Production of an inulin solution comprises treating a chicory root extract with a coagulant and then a flocculant |
-
1979
- 1979-02-13 FR FR7903575A patent/FR2448939A1/en active Granted
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3152439A1 (en) * | 1979-10-31 | 1982-09-23 | P Barberet | RECUPERATOR-DISSIPATOR OF CALORIES |
WO1982001324A1 (en) * | 1980-10-13 | 1982-04-29 | Jacob Weitman | Method and apparatus for the separation of preferably gaseous and difficultly condensable contaminations from a gas |
FR2512006A1 (en) * | 1981-08-27 | 1983-03-04 | Lambert Jean Pierre | PROCESS FOR CLARIFYING WASTEWATER |
EP0082809A1 (en) * | 1981-12-18 | 1983-06-29 | Benno Perren (verstorben) | Process and apparatus for the continuous separation of suspended matter from a polluted liquid |
WO1992008533A1 (en) * | 1990-11-15 | 1992-05-29 | Multiserv International Limited | Treatment of dispersions |
EP0524039A1 (en) * | 1991-07-19 | 1993-01-20 | Degremont | Process and apparatus for water treatment |
FR2679223A1 (en) * | 1991-07-19 | 1993-01-22 | Degremont | METHOD AND DEVICE FOR TREATING WATER. |
US5382369A (en) * | 1991-07-19 | 1995-01-17 | Degremont | Waste water-treatment process |
FR2839073A1 (en) * | 2002-04-26 | 2003-10-31 | Sucre Rech & Dev | Production of an inulin solution comprises treating a chicory root extract with a coagulant and then a flocculant |
Also Published As
Publication number | Publication date |
---|---|
FR2448939B1 (en) | 1983-06-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |