WO1995009700A1 - Method and jacket for encapsulation of waste - Google Patents
Method and jacket for encapsulation of waste Download PDFInfo
- Publication number
- WO1995009700A1 WO1995009700A1 PCT/BE1994/000033 BE9400033W WO9509700A1 WO 1995009700 A1 WO1995009700 A1 WO 1995009700A1 BE 9400033 W BE9400033 W BE 9400033W WO 9509700 A1 WO9509700 A1 WO 9509700A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- jacket
- waste
- container
- spacer
- plastic
- Prior art date
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005538 encapsulation Methods 0.000 title abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000004567 concrete Substances 0.000 claims abstract description 16
- 239000010425 asbestos Substances 0.000 claims abstract description 13
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 239000013502 plastic waste Substances 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 8
- 239000002893 slag Substances 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 125000006850 spacer group Chemical group 0.000 claims description 31
- 230000002787 reinforcement Effects 0.000 claims description 11
- 230000001427 coherent effect Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 239000002910 solid waste Substances 0.000 claims description 2
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- -1 residues Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 241000665629 Linum flavum Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
- B09B3/21—Agglomeration, binding or encapsulation of solid waste using organic binders or matrix
- B09B3/24—Binders with plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/0068—Embedding lost cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
- B09B3/21—Agglomeration, binding or encapsulation of solid waste using organic binders or matrix
Definitions
- This invention concerns a method for encapsulation of waste, such as asbestos, iron or metal slags, residues, ashes, etc. from the metal or other industry. Because of their noxious effects, asbestos waste and/or asbestos fibres have to be processed so that they remain separated from the environment.
- This invention has as its purpose to avoid these disadvantages, by proposing a method which enables the waste material, such as asbestos, to be processed into safe blocks which can be used e.g. as construction material f.i. in the building industry.
- said waste is mixed with an encapsu ⁇ lation material which may or may not be previously softened or melted, preferably consisting at least partly of plastic, more specifically plastic waste, where the whole thus formed by the waste and encapsulating material is brought in a hollow vessel consisting essentially of plastic, metal and/or concrete, so as to form a solid, more or less coherent mass in said vessel, whereupon said vessel is closed, so that said mass is isolated from the environmen .
- an encapsu ⁇ lation material which may or may not be previously softened or melted, preferably consisting at least partly of plastic, more specifically plastic waste, where the whole thus formed by the waste and encapsulating material is brought in a hollow vessel consisting essentially of plastic, metal and/or concrete, so as to form a solid, more or less coherent mass in said vessel, whereupon said vessel is closed, so that said mass is isolated from the environmen .
- Solid waste in a divided condition f.i. fine sized or fine granulated state
- thermoplastic material more specifically, plastic waste
- This mass is then placed in a jacket, in which it solidifies to form a solid mass.
- a jacket is used having relatively stiff walls which are heat-resistant at the temperature of said mass and which are impenetrable to it. Means can be advantageously fitted to separate said whole of waste and encapsulating material from said vessel.
- said coherent mass of waste and encapsulating material is placed in a mould, with or without said jacket.
- the remaining space in this mould is further filled with an embedding material, e.g. liquid concrete or molten plastic waste, which then forms the above-mentioned hollow vessel.
- reinforcement is placed round at least part of said jacket.
- spacers are fitted between the jacket and the mould, enabling said jacket to be placed at a suitable distance from the inner wall of the mould.
- the invention also concerns a jacket consisting of a container that can be closed, for applying the method according to the invention.
- Said container can efficiently be partly surrounded by at least one spacer which enables rein- forcement to be placed at a suitable distance from said container.
- the bottom surface of said container which is opposite to a surface which forms said lid, can advan- tageously be provided with at least one spacer.
- the surface of said container has said spacer at least partly at the side with respect to the lid.
- said spacer is removable and U-shaped and encloses said lid at least partly.
- the ends of said U-shaped spacer are removably attached to the spacer at said bottom surface.
- Fig. 1 is a schematic, perspective, exploded drawing of the component parts of the jacket according to a specific embodiment of the description.
- Fig. 2 is a schematic, perspective, exploded drawing of a jacket and a mould, according to a specific embodiment of the invention.
- Fig. 3 is a schematic, vertical cross-section, to a smaller scale, of a mould with encapsulated waste according to the invention.
- the invention concerns a method for processing asbestos waste and other waste materials, e.g. iron or metal slags and all sorts of residues from the metal industry.
- This waste is preferably mixed as homogeneously as possible with an encapsulating material such as melted or soft plastic waste until it is distrib ⁇ uted through said plastic waste and a more or less coherent mass is formed.
- the amount of plastic is preferably 20 to 40 percent of the mixture by weight. If necessary the asbestos or other waste material is first broken up and/or ground to smaller dimensions.
- the jacket 1 shown here consists of a relatively stiff, heat-resistant plastic and is formed by a cube-shaped container 2, whose open top is closed by a more or less fitting square lid 3.
- Said lid 3 has at its edge four rectangular openings 4 through which projections 5 pass when the lid 3 closes the container 2.
- Said projections 5 have holes 6 in the direction of the surface of the lid 3, in which a peg 7 can be tightly inserted which presses the lid 3 onto the container 2, such that the latter is tightly closed.
- the bottom surface 9 of the container 2 has on the outside two parallel, fixed spacers 10 which are parallel to one of the edges of said bottom surface 9.
- the U-shaped spacers 8 When the U-shaped spacers 8 are placed over the container 2, they form a closed ring with the spacers 10 on the bottom surface 9 round the jacket 1, said ring being parallel to the side surfaces 2c and 2d of the container 2.
- the ends of the U-shaped spacers 8 have an opening 11 through which a peg 7 passes into the recess 12 in the ends of the spacer 10, and so fastens the U-shaped spacers 8 to the spacers 10.
- the spacers 8, 10 and 13 have notches 14 in which a reinforcement 15 can be placed, as shown in fig. 2 by the dot-dash line.
- Said reinforcement 15 can for example consist of a metal mesh or more specifically an iron mesh, as in the embodiment shown, or it may consist of a fibrous material, such as glass fibres or textile fibres, e.g. flax fibres, either in the form of a mesh or as loose particles mixed with the concrete.
- This mould 16 is a cube-shaped tub 17 with two supports 18 on each two opposite sides. Said supports 18 project above the tub 17 and have at their top end a concave surface so that a bar 19 rests in equilibrium on two opposite supports 18.
- the jacket 1 is suspended together with its contents from two steel cables 20. These cables 20 support the bottom surface 9 and extend along the side surfaces 2a and 2b of the container 2, reaching above the jacket 1. The ends of both cables 20 are fitted with rings 21. For each cable 20 there is a bar 19 over which both rings 21 of the cable 20 can be slid.
- each of the bars 19 rests on two supports 18 located opposite each other.
- said mould is further filled with an embedding material 23, more specifically liquid concrete, in which an additive may or not be mixed, enabling a water-tight wall to be formed.
- an embedding material 23 is formed which encloses the waste material.
- the filled mould 16 is shown in fig. 3, containing in the middle the coherent mass of waste and encapsulating material 22, round which is the jacket 1 with the reinforcement 15 which is cast into the concrete 23.
- the block thus obtained can then be removed from the mould 16 and, once the bars 19 have been removed, can be lifted and transported by means of the rings 21.
- the waste to be processed is now safely contained, isolated from the environment.
- a recess (not shown) can be made in the top surface of the concrete mass 23 for the rings 21 with the projecting end of the cables 20.
- This block can for example be used as a construction or foundation block for building ports, dams, dikes or industrial structures, and consists for example of a cube of lm 3 with a centrally cast cube- shaped jacket 1 with a side of 60 cm, so that the wall thickness of the surrounding concrete is 20 cm.
- the jacket 1 can equally well be made of another material, such as steel, and can if desired be removed before the whole of encapsulating material and waste 22 is placed in the concrete 23.
- the encapsulating material does not necessarily have to be a thermoplastic, but can equally well be concrete, metal or thermosetting plastic.
- waste materials other than asbestos for example metal slags, can be processed in such a manner.
- the jacket 1 can if desired rest within the mould 16 which for example can be made of wood or concrete, and may or may not be removable.
- the cables 20 can be replaced by chains or bars and/or form part of the jacket 1 or the mould 16.
- the dimensions and shape of the jacket 1 and of the mould 16 can be of all sorts, and are not limited to the embodiment presented here.
- the spacers 8, 10 and 13 can for example consist of separate parts, or can form part of the reinforcement 15.
- the jacket 1 can be formed by a film on the inner wall of the hollow vessel 23, in order to separate the latter from the solid coherent mass of encapsulating material and waste 22.
- the jacket is preferably inert with respect to said coherent mass, and is impenetrable to the combined components of said mass 22.
- the hollow vessel 23 can also consist of a separate tub, for example a precast tub of reinforced concrete in which the encapsulated waste, which may or may not be in a jacket, can be placed.
- a sealing film may be placed on the inner wall of the concrete tub, instead of a separate jacket.
- a sealing film may be placed on the inner wall of the concrete tub, instead of a separate jacket.
- the mould 16 can be made such that a block is obtained, whose outer wall has projections and corresponding recesses which enable blocks placed next each other to be locked together.
- the jacket 1 can be used for loose waste which is poured into the container 2. Said container 2 is then closed by a lid 3 and cast into the concrete mass 23 in the manner described above.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94914275A EP0722371A1 (en) | 1993-10-05 | 1994-05-19 | Method and jacket for encapsulation of waste |
AU66725/94A AU6672594A (en) | 1993-10-05 | 1994-05-19 | Method and jacket for encapsulation of waste |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9301035 | 1993-10-05 | ||
BE9301035 | 1993-10-05 | ||
BE9400286 | 1994-03-16 | ||
BE9400286A BE1008181A6 (en) | 1994-03-16 | 1994-03-16 | Method and casing for encasing waste |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995009700A1 true WO1995009700A1 (en) | 1995-04-13 |
Family
ID=25662787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BE1994/000033 WO1995009700A1 (en) | 1993-10-05 | 1994-05-19 | Method and jacket for encapsulation of waste |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0722371A1 (en) |
AU (1) | AU6672594A (en) |
WO (1) | WO1995009700A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2546342A (en) * | 2016-01-16 | 2017-07-19 | Edward Holme Ivor | Non recyclable rubbish cubes (NRRCs) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2203753A1 (en) * | 1972-10-18 | 1974-05-17 | Tezuka Kosan Kk | |
FR2403632A1 (en) * | 1977-09-16 | 1979-04-13 | Strahlen Umweltforsch Gmbh | PROCEDURE FOR RETURNING DRUMS FILLED WITH WASTE FROM A CLOSED ENVELOPE, RESISTANT TO LEACHING |
EP0037312A1 (en) * | 1980-03-27 | 1981-10-07 | SOCIETE GENERALE POUR LES TECHNIQUES NOUVELLES S.G.N. Société anonyme dite: | Container for conditioning radioactive effluents |
DE3439092A1 (en) * | 1984-10-25 | 1986-04-30 | Uwe Ing.(grad.) 6458 Rodenbach Grahmann | Radioactive double-sized container as a waste cask capable of ultimate disposal |
DE3603080A1 (en) * | 1986-02-01 | 1987-08-06 | Peter Molitor | Process for producing products suitable for landfilling using harmful and/or waste materials |
FR2612678A1 (en) * | 1987-03-21 | 1988-09-23 | Nuklear Service Gmbh Gns | METHOD FOR STORING RADIOACTIVE WASTE AND CONTAINING STORAGE CONTAINER FOR IMPLEMENTING THE METHOD |
WO1990009424A1 (en) * | 1989-02-13 | 1990-08-23 | Wilfried Schraufstetter | Process for binding particulate waste, such as dust, metal scrap, fibres, paper waste or the like, to solids |
DE3927443A1 (en) * | 1989-08-16 | 1991-02-21 | Ernst Schirm Gmbh | Disposing of dangerous waste prods. - by dumping after mixing with thermoplastic or similar material to prevent e.g. release of dangerous particles or other hazards |
WO1992002764A2 (en) * | 1990-08-03 | 1992-02-20 | Lunsford T J | Refuse recycling system |
-
1994
- 1994-05-19 AU AU66725/94A patent/AU6672594A/en not_active Abandoned
- 1994-05-19 EP EP94914275A patent/EP0722371A1/en not_active Withdrawn
- 1994-05-19 WO PCT/BE1994/000033 patent/WO1995009700A1/en not_active Application Discontinuation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2203753A1 (en) * | 1972-10-18 | 1974-05-17 | Tezuka Kosan Kk | |
FR2403632A1 (en) * | 1977-09-16 | 1979-04-13 | Strahlen Umweltforsch Gmbh | PROCEDURE FOR RETURNING DRUMS FILLED WITH WASTE FROM A CLOSED ENVELOPE, RESISTANT TO LEACHING |
EP0037312A1 (en) * | 1980-03-27 | 1981-10-07 | SOCIETE GENERALE POUR LES TECHNIQUES NOUVELLES S.G.N. Société anonyme dite: | Container for conditioning radioactive effluents |
DE3439092A1 (en) * | 1984-10-25 | 1986-04-30 | Uwe Ing.(grad.) 6458 Rodenbach Grahmann | Radioactive double-sized container as a waste cask capable of ultimate disposal |
DE3603080A1 (en) * | 1986-02-01 | 1987-08-06 | Peter Molitor | Process for producing products suitable for landfilling using harmful and/or waste materials |
FR2612678A1 (en) * | 1987-03-21 | 1988-09-23 | Nuklear Service Gmbh Gns | METHOD FOR STORING RADIOACTIVE WASTE AND CONTAINING STORAGE CONTAINER FOR IMPLEMENTING THE METHOD |
WO1990009424A1 (en) * | 1989-02-13 | 1990-08-23 | Wilfried Schraufstetter | Process for binding particulate waste, such as dust, metal scrap, fibres, paper waste or the like, to solids |
DE3927443A1 (en) * | 1989-08-16 | 1991-02-21 | Ernst Schirm Gmbh | Disposing of dangerous waste prods. - by dumping after mixing with thermoplastic or similar material to prevent e.g. release of dangerous particles or other hazards |
WO1992002764A2 (en) * | 1990-08-03 | 1992-02-20 | Lunsford T J | Refuse recycling system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2546342A (en) * | 2016-01-16 | 2017-07-19 | Edward Holme Ivor | Non recyclable rubbish cubes (NRRCs) |
Also Published As
Publication number | Publication date |
---|---|
AU6672594A (en) | 1995-05-01 |
EP0722371A1 (en) | 1996-07-24 |
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