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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 area

Info

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
Application number
FR7426858A
Other languages
French (fr)
Other versions
FR2282926B1 (en
Inventor
Roger Cuvillier
Richard Cohen-Alloro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bureau de Recherches Geologiques et Minieres BRGM
Original Assignee
Bureau de Recherches Geologiques et Minieres BRGM
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bureau de Recherches Geologiques et Minieres BRGM filed Critical Bureau de Recherches Geologiques et Minieres BRGM
Priority to FR7426858A priority Critical patent/FR2282926A1/en
Publication of FR2282926A1 publication Critical patent/FR2282926A1/en
Application granted granted Critical
Publication of FR2282926B1 publication Critical patent/FR2282926B1/fr
Granted legal-status Critical Current

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.
FR7426858A 1974-08-02 1974-08-02 Solids sepd. from liquids by decantation - with spiral flow between successive stages, using small surface area Granted FR2282926A1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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