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WO2003006186A1 - Procede d'encapsulation de dechets - Google Patents

Procede d'encapsulation de dechets Download PDF

Info

Publication number
WO2003006186A1
WO2003006186A1 PCT/GB2002/003207 GB0203207W WO03006186A1 WO 2003006186 A1 WO2003006186 A1 WO 2003006186A1 GB 0203207 W GB0203207 W GB 0203207W WO 03006186 A1 WO03006186 A1 WO 03006186A1
Authority
WO
WIPO (PCT)
Prior art keywords
waste material
waste
encapsulating
treating
liquid
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.)
Ceased
Application number
PCT/GB2002/003207
Other languages
English (en)
Inventor
Stanley George Caza
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.)
Ecapgblimited
Original Assignee
Ecapgblimited
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 Ecapgblimited filed Critical Ecapgblimited
Publication of WO2003006186A1 publication Critical patent/WO2003006186A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/08—Reclamation of contaminated soil chemically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • B09B3/25—Agglomeration, binding or encapsulation of solid waste using mineral binders or matrix

Definitions

  • the present invention relates to a process for encapsulating waste material.
  • the present invention relates to a process for encapsulating an oleophilic waste material.
  • waste materials with which the invention is primarily concerned include such materials present in a sludge.
  • sludges which generally have no value, are generated in various industrial processes.
  • a sludge consisting of an organic solvent and grease is produced when cleansing metal parts to remove grease, a waste material, therefrom.
  • sludges may also be produced in the dye, ink and paint industries where dye, ink or paint is dissolved in an organic solvent; such organic solvents including chlorinated solvents, for example, trichloroethylene, perchlorethylene etc., or aromatic solvents, for example, toluene.
  • organic solvents including chlorinated solvents, for example, trichloroethylene, perchlorethylene etc., or aromatic solvents, for example, toluene.
  • European Patent No. 655,955 discloses a process for encapsulating waste material comprising the steps of providing the waste material in association with a vaporisable liquid, admixing the waste material/liquid composition with a particulate material, preferably, fly ash, and heating the admixture to remove the vaporizable liquid such that the waste material remains firmly bound within the particulate material.
  • a particulate material preferably, fly ash
  • a process for encapsulating waste material including the steps of: providing the waste material in association with a vaporisable liquid, admixing the waste material/liquid composition with a particulate material, preferably fly ash, and heating the admixture to remove the vaporizable liquid characterised in that the process further includes the step of pre-treating the waste material ultrasonically.
  • a process in accordance with the present invention at least addresses the problems outlined above in that the step of pre-treating the waste material ultrasonically produces a slurry of smaller particle size, preferably below 5 microns, thereby making same suitable for use in encapsulating heavy metal waste materials.
  • FIG. 1 is a schematic diagram of a process plant suitable for carrying out the process of the present invention.
  • a sludge of variable particle size or dried material waste is delivered into vessel 1 via valve V2.
  • the sludge is then mixed with a suitable solvent, such as toluene, by opening valve V1 , preferably at a dilution rate of between 1 to 10.
  • the agitator 2 is started and the solvent is allowed to mix with the waste material.
  • valve V3 is opened and the pump 3 is started.
  • the pump 3 may be a simple slurry pump, jet pump, inductor or other hydro-transport device, which may need a transport medium, such as a further solvent, fed into it at pressure via valve V8. It is to be understood that in the case of large material, a maceration pump may be used.
  • Valves V4 and V6 are then opened and once re-circulation is established, an ultrasonic processor 4, preferably of the type disclosed in PCT GB96/01612, is actuated and the waste material is re-circulated until the slurry is suitably deaglomerated for encapsulation. This can be assessed by taking samples via sample plant valve V7.
  • V4 is closed and V5 is opened with V3, V6, V1 and V5 open.
  • the system can be purged of any solids prior to a plant or system shut-down and the treated waste material is transferred for encapsulation as described in European Patent No. 0,655,955.
  • pump 3 may be replaced by a fluidising unit 5 which can act as a slurry transport system to either recirculate the waste material through the ultrasonic processor unit 4 and/or purge the system with solvent with all valves to vessel 1 closed and the valves to the fluidising unit 5 open.
  • a fluidising unit 5 which can act as a slurry transport system to either recirculate the waste material through the ultrasonic processor unit 4 and/or purge the system with solvent with all valves to vessel 1 closed and the valves to the fluidising unit 5 open.
  • waste paint, ink dyes, sludge and dry solids waste paint, ink dyes, sludge and dry solids
  • tar sludge and solids waste hydrocarbon sludges and solid waste
  • textile waste sludges metal waste sludges
  • solvent degreasing sludges dry cleaning sludges
  • radioactive sludges petrochemical sludges
  • waste incinerator ash waste incinerator fume scrubber materials
  • removal of hydrocarbon on fire ash to cement industries waste based toxic sludges.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Treatment Of Sludge (AREA)

Abstract

L'invention concerne un procédé d'encapsulation de déchets, qui comprend les étapes consistant à fournir les déchets associés à un liquide pouvant être vaporisé, à mélanger les déchets/composition liquide avec un matériau particulaire, de préférence des cendres volantes, et à chauffer ce mélange pour éliminer le liquide pouvant être vaporisé. Ce procédé se caractérise en ce qu'il comprend également l'étape consistant à préchauffer les déchets à l'aide d'ultrasons (4).
PCT/GB2002/003207 2001-07-13 2002-07-12 Procede d'encapsulation de dechets Ceased WO2003006186A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0117107.3 2001-07-13
GBGB0117107.3A GB0117107D0 (en) 2001-07-13 2001-07-13 Process for encapsulating a waste material

Publications (1)

Publication Number Publication Date
WO2003006186A1 true WO2003006186A1 (fr) 2003-01-23

Family

ID=9918434

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/003207 Ceased WO2003006186A1 (fr) 2001-07-13 2002-07-12 Procede d'encapsulation de dechets

Country Status (2)

Country Link
GB (1) GB0117107D0 (fr)
WO (1) WO2003006186A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2477924A (en) * 2010-02-17 2011-08-24 Encapsuwaste Ltd A method of encapsulating waste material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009859A1 (fr) * 1991-11-11 1993-05-27 Henkel Kommanditgesellschaft Auf Aktien Elimination d'hydrocarbures, de lubrifiants de refroidissement et/ou d'huiles de la surface de fines particules
WO1994004290A1 (fr) * 1992-08-19 1994-03-03 British Technology Group Inter-Corporate Licensing Limited Procede d'encapsulation de matieres residuaires
WO1997002088A1 (fr) * 1995-07-05 1997-01-23 Advanced Assured Homes 17 Plc Perfectionnements relatifs a des dispositifs de traitement par ultrasons

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009859A1 (fr) * 1991-11-11 1993-05-27 Henkel Kommanditgesellschaft Auf Aktien Elimination d'hydrocarbures, de lubrifiants de refroidissement et/ou d'huiles de la surface de fines particules
WO1994004290A1 (fr) * 1992-08-19 1994-03-03 British Technology Group Inter-Corporate Licensing Limited Procede d'encapsulation de matieres residuaires
EP0655955A1 (fr) * 1992-08-19 1995-06-07 British Technology Group Inter-Corporate Licensing Limited Procede d'encapsulation de matieres residuaires
WO1997002088A1 (fr) * 1995-07-05 1997-01-23 Advanced Assured Homes 17 Plc Perfectionnements relatifs a des dispositifs de traitement par ultrasons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2477924A (en) * 2010-02-17 2011-08-24 Encapsuwaste Ltd A method of encapsulating waste material

Also Published As

Publication number Publication date
GB0117107D0 (en) 2001-09-05

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