WO2002030573A1 - Procede et dispositif de traitement de milieu - Google Patents

Procede et dispositif de traitement de milieu Download PDF

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Publication number
WO2002030573A1
WO2002030573A1 PCT/SE2001/002209 SE0102209W WO0230573A1 WO 2002030573 A1 WO2002030573 A1 WO 2002030573A1 SE 0102209 W SE0102209 W SE 0102209W WO 0230573 A1 WO0230573 A1 WO 0230573A1
Authority
WO
WIPO (PCT)
Prior art keywords
particles
washing
vessel
sand
lighter
Prior art date
Application number
PCT/SE2001/002209
Other languages
English (en)
Inventor
Hans Malm
Reinhold Radszuweit
Original Assignee
Läckeby Water AB
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 Läckeby Water AB filed Critical Läckeby Water AB
Priority to AU2001294487A priority Critical patent/AU2001294487A1/en
Publication of WO2002030573A1 publication Critical patent/WO2002030573A1/fr

Links

Classifications

    • 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
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
    • 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
    • B01D21/2405—Feed 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
    • B01D21/2411—Feed mechanisms for settling tanks having a tangential inlet
    • 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
    • B01D21/2433—Discharge mechanisms for floating 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
    • B01D21/24—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
    • 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
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/62—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type

Definitions

  • An arrangement 2 in accordance with the invention can consist of a circular vessel 4, which exhibits vertical or inclined single walls 5, and a vessel part 8, 9 provided with straight vertical walls 6, 7 can be connected to the aforementioned interjacent circular vessel 4 at the top and bottom respectively.
  • a centrally located rotating washing fluid supply device 18, 19 supported by a rotatably 20 driven vertical drive shaft 21. Also present is an aforementioned outlet part 17 for lighter more or less buoyant particles 10 arranged in the middle thereof at a level 14 above the level 22 for heavier, non-floating material 3 intended for washing received in the vessel 13.
  • the aforementioned device 18, 19 is so arranged as to supply washing fluid 23 in the form of water, gas or some other liquid medium to the inner accommodating space 24 of the aforementioned vessel 13 during simultaneous stirring of the medium accommodated therein.
  • the aforementioned centrally located outlet part 17 for lighter particles 10 is formed by a tubular concentric hopper which exhibits a centrally located passage 25 for a rotating shaft 21 to the aforementioned stirring and washing fluid supply device 18, 19, and in turn a pipe 26 for washing fluid 23 extends internally therein.
  • the illustrative example comprises a lower and an upper washing fluid supply device 18, 19, of which the lower is so arranged as to rotate as part of the actual process of collecting the aforementioned heavier particles, the sand 3, while the upper acts at a higher level 27, albeit below the level 28 where an inlet 29 for the supply of a liquid medium 12 to the upper part 8 of the washing vessel extends tangentially at a level 28 below an upper outlet 30, intended for other lighter buoyant particles, which leads from the washing vessel 13 at its upper end 13A.
  • a discharge part 31, 32 for sand, etc., from the lower part 13B of the washing vessel is formed by a valve 31 or a conveyor 32, preferably in the form of a rotatably driven screw conveyor 32 accommodated in an inclined tube 33.
  • the function of the aforementioned invention is for the sinking heavier particles 3 to be received at the bottom in the washing vessel 13, while the lighter particles 10 leave the washing vessel 13 together with the liquid medium 34 either through the upper outlet 30 or through the decanting funnel 17.
  • a valve 35 in an outlet pipe 36 is opened for lighter particles and naturally also waste water, and by creating a hydraulic pressure difference the sedimented material is decanted more easily, for example the organic material that it is not intended to wash away, but instead to separate beforehand from the content of the washing vessel 13, which takes place during a predetermined period.
  • the aforementioned lighter particles may, for example, consist of grains of corn, peas, beans, maize, wood and other similar products that are present in the matter removed from sewage.
  • the aforementioned lighter material 10 is caused to rotate like a whirlpool and makes its way towards the centre, while the sand 3 or some other non-buoyant particular material deposits itself at a level below the level of the aforementioned organic material 10 or other light material.
  • the sand, etc., 3, which it is intended to wash, moves past a lower rotating stirrer arm 18 or disc, which exhibits a number of outlet holes 37 to permit water 23 and/or air or some other appropriate washing fluid to flow out as it makes its way downwards 38 in the washing vessel . 13.
  • Means are also provided for regulating the sand level 22 in the vessel 13, so that a certain level of sand is constantly present in the actual washing part 39 of the vessel.
  • Return flushing of fluid 43 from the screw 32 and its enclosing casing tube 33 can, if so desired, be achieved by means of a pipe 45 running from the upper part 44 of the screw and to the washing vessel 13, preferably on a common level 46 with the upper part 13A of the vessel.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

L'invention concerne un procédé et un arrangement destinés à la séparation de particules légères (10) et de particules lourdes (3) dans un milieu liquide contenant des particules légères et des particules lourdes qui décantent et qui doivent être lavées, en particulier du sable, et en particulier à l'arrivée d'eaux usées dans des installations d'assainissement dans lesquelles on procède à l'élimination des particules lourdes à l'extrémité inférieure d'une cuve et des particules légères à un niveau situé au dessus de celui de la sortie des particules lourdes. Selon l'invention, on varie le niveau d'eau de procédé de lavage du sable (3) dans la cuve (13) de façon à réaliser une différence de pression hydraulique et que le matériau plus léger sédimenté (10), qui ne doit pas être lavé, puisse être éliminé par décantation pendant une période prédéterminée en provoquant la mise en rotation (20) du matériau plus léger (10) le forçant ainsi à se rassembler vers le centre à un niveau (14) supérieur au niveau supérieur (22) du sable. L'eau de lavage (23) et/ou un autre fluide de lavage du sable sont aussi fournis.
PCT/SE2001/002209 2000-10-12 2001-10-11 Procede et dispositif de traitement de milieu WO2002030573A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001294487A AU2001294487A1 (en) 2000-10-12 2001-10-11 A method and a device for treatment of medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0003680-6 2000-10-12
SE0003680A SE518295C2 (sv) 2000-10-12 2000-10-12 Förfarande och anordning för avskiljning av lättare partiklar från tyngre partiklar i en vätska

Publications (1)

Publication Number Publication Date
WO2002030573A1 true WO2002030573A1 (fr) 2002-04-18

Family

ID=20281386

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/002209 WO2002030573A1 (fr) 2000-10-12 2001-10-11 Procede et dispositif de traitement de milieu

Country Status (3)

Country Link
AU (1) AU2001294487A1 (fr)
SE (1) SE518295C2 (fr)
WO (1) WO2002030573A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014183804A1 (fr) * 2013-05-17 2014-11-20 Stigebrandt Hydroteknik Ab Séparateur et procédé de séparation de particules solides à partir de liquides

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995030486A1 (fr) * 1994-05-04 1995-11-16 Hans Huber Gmbh Maschinen- Und Anlagenbau Dispositif permettant de separer d'un liquide un materiau inorganique pollue par un materiau organique
DE19501034A1 (de) * 1995-01-16 1996-07-18 Huber Hans Gmbh Maschinen Und Vorrichtung zum Abtrennen von Schwimmstoffen und Sinkstoffen aus einer Flüssigkeit
EP0811428A2 (fr) * 1996-06-07 1997-12-10 Gerd Meurer Abwassertechnik GmbH Dispositif pour séparer des matières composites en suspension dans un liquide
DE19924164A1 (de) * 1999-02-18 2000-09-28 Bormet Maschinenbau Gmbh Verfahren und Vorrichtung zur Separation von aus organischem und anorganischem Material zusammengesetzten Feststoffen aus einer mit Feststoffen vermischten Flüssigkeit und zur Abtrennung des anorganischen Materials aus dem Gemisch von organischen und anorganischem Material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995030486A1 (fr) * 1994-05-04 1995-11-16 Hans Huber Gmbh Maschinen- Und Anlagenbau Dispositif permettant de separer d'un liquide un materiau inorganique pollue par un materiau organique
DE19501034A1 (de) * 1995-01-16 1996-07-18 Huber Hans Gmbh Maschinen Und Vorrichtung zum Abtrennen von Schwimmstoffen und Sinkstoffen aus einer Flüssigkeit
EP0811428A2 (fr) * 1996-06-07 1997-12-10 Gerd Meurer Abwassertechnik GmbH Dispositif pour séparer des matières composites en suspension dans un liquide
DE19924164A1 (de) * 1999-02-18 2000-09-28 Bormet Maschinenbau Gmbh Verfahren und Vorrichtung zur Separation von aus organischem und anorganischem Material zusammengesetzten Feststoffen aus einer mit Feststoffen vermischten Flüssigkeit und zur Abtrennung des anorganischen Materials aus dem Gemisch von organischen und anorganischem Material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014183804A1 (fr) * 2013-05-17 2014-11-20 Stigebrandt Hydroteknik Ab Séparateur et procédé de séparation de particules solides à partir de liquides

Also Published As

Publication number Publication date
AU2001294487A1 (en) 2002-04-22
SE0003680D0 (sv) 2000-10-12
SE0003680L (sv) 2002-04-13
SE518295C2 (sv) 2002-09-17

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