CA2378330A1 - Deep bed thickener/clarifiers with enhanced liquid removal - Google Patents

Deep bed thickener/clarifiers with enhanced liquid removal Download PDF

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Publication number
CA2378330A1
CA2378330A1 CA002378330A CA2378330A CA2378330A1 CA 2378330 A1 CA2378330 A1 CA 2378330A1 CA 002378330 A CA002378330 A CA 002378330A CA 2378330 A CA2378330 A CA 2378330A CA 2378330 A1 CA2378330 A1 CA 2378330A1
Authority
CA
Canada
Prior art keywords
zone
liquid
deliquifying
vessel
settling
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
CA002378330A
Other languages
French (fr)
Other versions
CA2378330C (en
Inventor
Daniel Bedell
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.)
FLSmidth AS
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2378330A1 publication Critical patent/CA2378330A1/en
Application granted granted Critical
Publication of CA2378330C publication Critical patent/CA2378330C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B01D21/0024—Inlets or outlets provided with regulating devices, e.g. valves, flaps
    • 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
    • B01D21/0042—Baffles or guide plates
    • 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
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • 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
    • B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
    • B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
    • 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
    • B01D21/08—Settling tanks with single outlets for the separated liquid provided with flocculating compartments
    • 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
    • B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
    • 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
    • B01D21/2405—Feed mechanisms for settling tanks
    • B01D21/2416—Liquid distributors with a plurality of feed points
    • B01D21/2422—Vertically arranged feed points
    • 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
    • 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
    • B01D21/245—Discharge mechanisms for the sediments
    • B01D21/2461—Positive-displacement pumps; Screw feeders; Trough conveyors
    • 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
    • B01D21/30—Control equipment
    • B01D21/302—Active control mechanisms with external energy, e.g. with solenoid valve
    • 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
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Soy Sauces And Products Related Thereto (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)

Abstract

The enhanced deliquifying of the compacted bed of deep bed thickener/clarifier is disclosed. Such an apparatus comprises a vessel receiving a slurry of liquid and solid particles suspended in the liquid.
The vessel defines a free settling zone, a hindered settling zone intermediate, an upper clarification zone and a lower compaction zone. A
deliquifying member is provided in the vessel extending up between at least two zones for facilitating the upward flow of free liquid from one of the lower zones and the settling of particulates. A rotating rake shaft with pickets are so designed to release the interstitial liquid trapped in a lower zone. The pickets provide pathways for liquid to release generally vertically. The released liquid travels upward to the deliquifying member and on into the clarification zone. The lower zone, freed of the interstitial water, further collapses becoming more concentrated or dense.
CA002378330A 1999-08-06 2000-07-26 Deep bed thickener/clarifiers with enhanced liquid removal Expired - Fee Related CA2378330C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US14765299P 1999-08-06 1999-08-06
US60/147,652 1999-08-06
PCT/US2000/020334 WO2001010530A1 (en) 1999-08-06 2000-07-26 Deep bed thickener/clarifiers with enhanced liquid removal

Publications (2)

Publication Number Publication Date
CA2378330A1 true CA2378330A1 (en) 2001-02-15
CA2378330C CA2378330C (en) 2006-09-19

Family

ID=22522370

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002378330A Expired - Fee Related CA2378330C (en) 1999-08-06 2000-07-26 Deep bed thickener/clarifiers with enhanced liquid removal

Country Status (8)

Country Link
CN (1) CN1372484A (en)
AR (1) AR025044A1 (en)
AU (1) AU6495000A (en)
BR (1) BR0013092B1 (en)
CA (1) CA2378330C (en)
PE (1) PE20010412A1 (en)
WO (1) WO2001010530A1 (en)
ZA (1) ZA200201010B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA78727C2 (en) 2001-11-09 2007-04-25 Alcan Int Ltd Settler and method for decanting mineral slurries
AUPS119202A0 (en) 2002-03-19 2002-04-18 Outokumpu Oyj Pulp stabilisation apparatus for a thickener
JP3888984B2 (en) * 2003-05-22 2007-03-07 東京都 Sewage treatment method and equipment for combined sewers
WO2005021129A1 (en) * 2003-08-29 2005-03-10 The University Of Newcastle Research Associates Limited Stimulant sensitive flocculation and consolidation
FI118519B (en) * 2006-04-28 2007-12-14 Outotec Oyj Method and apparatus for shear thinning of materials containing solids
FI119279B (en) * 2007-02-22 2008-09-30 Outotec Oyj Thickening process and thickening apparatus
CN104624393B (en) * 2013-11-08 2017-09-12 中冶长天国际工程有限责任公司 A kind of multilayer desliming thickener
CN106975248A (en) * 2017-05-08 2017-07-25 北京中矿东方矿业有限公司 A kind of passive highly effective thickener
CN110420752A (en) * 2019-07-24 2019-11-08 中国恩菲工程技术有限公司 Rotation multistage separator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1526197A (en) * 1923-08-18 1925-02-10 Ahlqvist Harald Clarification process and apparatus
US1686203A (en) * 1925-01-09 1928-10-02 Harrison S Coe Thickening apparatus
US1718871A (en) * 1926-08-19 1929-06-25 Carl H Nordell Method of and means for separating comminuted matter from the liquid in which it is immersed
US2460834A (en) * 1937-01-26 1949-02-08 Mining Process & Patent Co Settling method and apparatus
US2253878A (en) * 1938-08-24 1941-08-26 Dorr Co Inc Tray clarifier
US2473297A (en) * 1945-04-03 1949-06-14 Henry C Parker Apparatus for clarifying liquors
US2570304A (en) * 1946-05-17 1951-10-09 Mirrlees Watson Company Ltd Removing suspended solids from liquids
CA2104648C (en) * 1992-08-24 2000-06-20 Richard Guy Batson Process for treating a suspension of solid particles in a carrier liquid

Also Published As

Publication number Publication date
CA2378330C (en) 2006-09-19
WO2001010530A1 (en) 2001-02-15
CN1372484A (en) 2002-10-02
BR0013092B1 (en) 2011-11-29
PE20010412A1 (en) 2001-04-16
AR025044A1 (en) 2002-11-06
AU6495000A (en) 2001-03-05
BR0013092A (en) 2002-07-02
ZA200201010B (en) 2003-07-30

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20190726