GB747182A - Continuous multiple-stage sedimentation process and means for effecting same - Google Patents

Continuous multiple-stage sedimentation process and means for effecting same

Info

Publication number
GB747182A
GB747182A GB3738/53A GB373853A GB747182A GB 747182 A GB747182 A GB 747182A GB 3738/53 A GB3738/53 A GB 3738/53A GB 373853 A GB373853 A GB 373853A GB 747182 A GB747182 A GB 747182A
Authority
GB
United Kingdom
Prior art keywords
stage
sediment
input
stages
series
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.)
Expired
Application number
GB3738/53A
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.)
Individual
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 GB747182A publication Critical patent/GB747182A/en
Expired 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
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • 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
    • 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
    • B01D21/0045—Plurality of essentially parallel 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
    • B01D21/10—Settling tanks with multiple outlets for the separated liquids
    • 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
    • B01D21/2488—Feed or discharge mechanisms for settling tanks bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids
    • 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
    • B01D21/32—Density control of clear liquid or sediment, e.g. optical control ; Control of physical properties
    • 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 Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

747,182. Separating granular &c. materials. EDER, T. Feb. 10, 1953 [Feb. 19, 1952], No. 3738/53. Class 82(2). A mixture of fine and coarse particles (sediment) is resolved with a high degree of accuracy in a multi-stage sedimentation process, each stage of which has a constant flow input, and delivers sediment to the next succeeding stage and fines to the next preceding stage; the liquid transfer involved through the outlet opening of at least one stage being controlled within the limits of an upcurrent of 20 per cent and a down current of 15 per cent of the input to that stage. Stage A is supplied with raw material at 8 and fines overflow from stage B at 19. A pump 15 extracts a quantity of the sediment and pumps it to a constant flow device 9, any excess returning along the pipe 21. This leads to a steady input to stage B and a consequent steady output from stage A. An overflow from stage C is also fed back to stage A, stage C also having a constant input 10. The bottom " feed-bands " to stages B and C are obtained from constant flow devices 26, 27. A constant discharge of sediment is maintained from stage C by the device 11 so that the whole system is self-balancing. Other embodiments are described with two series of stages in series and with four series stages.
GB3738/53A 1952-02-19 1953-02-10 Continuous multiple-stage sedimentation process and means for effecting same Expired GB747182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT747182X 1952-02-19

Publications (1)

Publication Number Publication Date
GB747182A true GB747182A (en) 1956-03-28

Family

ID=3680315

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3738/53A Expired GB747182A (en) 1952-02-19 1953-02-10 Continuous multiple-stage sedimentation process and means for effecting same

Country Status (1)

Country Link
GB (1) GB747182A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543021A1 (en) * 1983-03-24 1984-09-28 Apeland Ivar HYDRODYNAMIC SAND CLASSIFICATION METHOD FOR PRESERVING FINE GRAINS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543021A1 (en) * 1983-03-24 1984-09-28 Apeland Ivar HYDRODYNAMIC SAND CLASSIFICATION METHOD FOR PRESERVING FINE GRAINS

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