FR2282926A1 - Solids sepd. from liquids by decantation - with spiral flow between successive stages, using small surface area - Google Patents
Solids sepd. from liquids by decantation - with spiral flow between successive stages, using small surface areaInfo
- Publication number
- FR2282926A1 FR2282926A1 FR7426858A FR7426858A FR2282926A1 FR 2282926 A1 FR2282926 A1 FR 2282926A1 FR 7426858 A FR7426858 A FR 7426858A FR 7426858 A FR7426858 A FR 7426858A FR 2282926 A1 FR2282926 A1 FR 2282926A1
- Authority
- FR
- France
- Prior art keywords
- liq
- partitions
- appts
- particles
- decantation
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0054—Plates in form of a coil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2427—The feed or discharge opening located at a distant position from the side walls
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
Solid particles are septd. from a liq., in which they are suspended, the particles being denser than the liq. consists of charging the suspension to the centre of a space already filled with liq. and preventing the mass of liq. from being displaced radially, so that the particles are decanted vertically. A superficial layer of liq. is displaced horizontally so that each unit of vol. of this layer follows a spiral path from the centre to the periphery where it is discharged. The solid particles are discharged from the bottom of the space. The appts. for carrying out the process consists of a vessel with a central feed, bottom discharge, and a number of vertical coaxial partitions forming anular compartments. Each partition has an indentation in its upper edge and the indentations in two adjacent partitions are diametrically opposite to one another. The vessel may be cylindrical with a conical bottom, or conical. Alternatively, there may be a spiral partition and there may be radial partitions in the spiral path so formed, and the heights of the partitions may be adjustable. The sepn. is made over a very small surfae, compared with existing decantation systems, which use several units, of very large surface, and rakes. The appts. is therefore cheaper to construct and occupies less space than existing appts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7426858A FR2282926A1 (en) | 1974-08-02 | 1974-08-02 | Solids sepd. from liquids by decantation - with spiral flow between successive stages, using small surface area |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7426858A FR2282926A1 (en) | 1974-08-02 | 1974-08-02 | Solids sepd. from liquids by decantation - with spiral flow between successive stages, using small surface area |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2282926A1 true FR2282926A1 (en) | 1976-03-26 |
FR2282926B1 FR2282926B1 (en) | 1977-06-24 |
Family
ID=9142031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7426858A Granted FR2282926A1 (en) | 1974-08-02 | 1974-08-02 | Solids sepd. from liquids by decantation - with spiral flow between successive stages, using small surface area |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2282926A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2417326A1 (en) * | 1978-02-15 | 1979-09-14 | Tepral Grpt Interet Economique | Continuous decanter for sepg. solids from liquids - comprises conical shell contg. concentric conical baffles with openings creating labyrinthine path, minimising space occupied |
WO1993007946A1 (en) * | 1991-10-18 | 1993-04-29 | William Warwick Foster | Separators |
GB2275211A (en) * | 1991-10-18 | 1994-08-24 | William Warwick Foster | Separators |
US20220396511A1 (en) * | 2021-06-09 | 2022-12-15 | Sanitary Green Incorporated | Wastewater processing modules and wastewater treatment systems including the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE421266C (en) * | 1924-02-02 | 1925-11-12 | Wilhelm Mauss | For the separation of solid substances from liquids, serving vessels |
FR1354397A (en) * | 1963-03-21 | 1964-03-06 | Watney Combe Reid & Company Lt | Method and apparatus for separating solids suspended in liquid |
-
1974
- 1974-08-02 FR FR7426858A patent/FR2282926A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE421266C (en) * | 1924-02-02 | 1925-11-12 | Wilhelm Mauss | For the separation of solid substances from liquids, serving vessels |
FR1354397A (en) * | 1963-03-21 | 1964-03-06 | Watney Combe Reid & Company Lt | Method and apparatus for separating solids suspended in liquid |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2417326A1 (en) * | 1978-02-15 | 1979-09-14 | Tepral Grpt Interet Economique | Continuous decanter for sepg. solids from liquids - comprises conical shell contg. concentric conical baffles with openings creating labyrinthine path, minimising space occupied |
WO1993007946A1 (en) * | 1991-10-18 | 1993-04-29 | William Warwick Foster | Separators |
GB2275211A (en) * | 1991-10-18 | 1994-08-24 | William Warwick Foster | Separators |
AU657172B2 (en) * | 1991-10-18 | 1995-03-02 | William Warwick Foster | Separators |
GB2275211B (en) * | 1991-10-18 | 1995-08-02 | William Warwick Foster | Separators |
US5575909A (en) * | 1991-10-18 | 1996-11-19 | Foster; William W. | Separators |
US20220396511A1 (en) * | 2021-06-09 | 2022-12-15 | Sanitary Green Incorporated | Wastewater processing modules and wastewater treatment systems including the same |
US11945742B2 (en) * | 2021-06-09 | 2024-04-02 | Sanitary Green Incorporated | Wastewater processing modules and wastewater treatment systems including the same |
Also Published As
Publication number | Publication date |
---|---|
FR2282926B1 (en) | 1977-06-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |