WO1997010191A1 - Composition pour le traitement de dechets - Google Patents
Composition pour le traitement de dechets Download PDFInfo
- Publication number
- WO1997010191A1 WO1997010191A1 PCT/FR1996/001380 FR9601380W WO9710191A1 WO 1997010191 A1 WO1997010191 A1 WO 1997010191A1 FR 9601380 W FR9601380 W FR 9601380W WO 9710191 A1 WO9710191 A1 WO 9710191A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- materials
- composition
- waste
- bentonite
- water
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Definitions
- the present invention relates to a composition for treating waste, in particular waste from building demolitions, and a method for treating waste using such a composition.
- This waste can, for example, be household waste, of hospital origin or from construction sites. This waste is, in a first step, sorted, then incinerated.
- Document FR-A-2 713 630 describes a binder for the treatment of waste which comprises silico-aluminous fly ash and quicklime.
- Document US-A-4 415 467 describes a composition for the treatment of waste water which comprises bentonite, lime, a coagulant such as aluminum sulphate, and an acid or its salt.
- a composition for treating wastewater has been described which comprises talc, adipic acid, aluminum sulphate, a flocculant, lime and bentonite.
- document FR-A-2701222 relates to a process for treating solid residues from the incineration of waste.
- the solid waste is brought into contact with a mineral acid, so as to obtain a solid residue in which the calcium oxides or hydroxides are in the form of insoluble calcium salts.
- An object of the present invention is to treat waste from, in particular, building demolitions or waste of the household waste or hospital origin type, using an aqueous liquid composition.
- Another object of the invention is to treat existing landfills by injecting a liquid composition.
- the invention relates to a waste treatment process consisting of a first phase in sorting concrete blocks or other solid mineral materials, metallic materials, synthetic materials, then, in a second step, grinding the materials plants and, in a third step, treating the remaining materials using an aqueous liquid composition comprising lime, a compound chosen from the group of smectites which are coated silicates, such as montmorillonite, bentonite, bentonite activated by alkaline, ash and water.
- aqueous liquid composition comprising lime, a compound chosen from the group of smectites which are coated silicates, such as montmorillonite, bentonite, bentonite activated by alkaline, ash and water.
- the aqueous composition comprises, approximately: between 50 and 150 kg of quicklime CaO, between 100 and 200 kg of the abovementioned compound, between 100 and 200 kg of ash, and between 500 and 1000 liters of water.
- composition preferably comprises approximately:
- the abovementioned compound is preferably a bentonite, in particular, alkaline, for example sodium, such as bentonite
- Bentonites and Derivatives This bentonite is in the form of a powder which gives, after dispersion in water, very viscous suspensions with a thixotropic gel structure. The large specific surface of these bentonites gives them an excellent absorption capacity.
- the ash used is preferably fly ash from coal, in particular from thermal power stations. These ashes are used in known manner to improve the physical properties of concrete (resistance to frost, water, thermal and sound resistance).
- the plant materials which are crushed are, for example, wood, such as beams, props, boards for formwork or other wood used as building materials. These plant materials can be mixed with other plant materials such as mowing residue or various grasses.
- a layer of plant material is deposited directly on the ground and this layer is sprayed with the aid of the above treatment composition.
- the composition is injected directly into the soil of a landfill.
- the composition is left to act for a few months and by aerobic and / or anaerobic fermentation, a decomposition of the remaining materials is obtained.
- composition according to the invention can be used for the treatment of all materials of plant origin such as wood, leaves, straws, herbs, and even waste from stationery or from natural textile factories.
- plant origin such as wood, leaves, straws, herbs, and even waste from stationery or from natural textile factories.
- liquid aqueous composition 100 kg of quicklime are mixed with 150 kg of bentonite, then with 150 kg of fly ash from coal and 700 liters of water. This composition is viscous, but nevertheless liquid. This is quite surprising, because we know that by mixing ash and lime, we get a hydraulic binder setting in the presence of water.
- the liquid aqueous composition of Example 1 is produced and injected into an existing landfill made up of waste from, for example, a stationery shop or a hospital. At the end of a period of between at least 3 and 12 months approximately, a total decomposition of the waste is obtained by fermentation. The product obtained can be used as spreading in the fields.
- Example 1 The liquid aqueous composition of Example 1 is produced and household or hospital waste is treated with this composition, after having separated the glasses, the metal packaging and the plastic packaging. A potting soil is obtained after fermentation for a few months.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96931095A EP0793631A1 (fr) | 1995-09-12 | 1996-09-09 | Composition pour le traitement de dechets |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR95/10646 | 1995-09-12 | ||
FR9510646A FR2738507A1 (fr) | 1995-09-12 | 1995-09-12 | Composition pour le traitement de dechets |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997010191A1 true WO1997010191A1 (fr) | 1997-03-20 |
Family
ID=9482451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1996/001380 WO1997010191A1 (fr) | 1995-09-12 | 1996-09-09 | Composition pour le traitement de dechets |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0793631A1 (fr) |
CA (1) | CA2205049A1 (fr) |
FR (1) | FR2738507A1 (fr) |
WO (1) | WO1997010191A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020023591A (ko) * | 2000-09-23 | 2002-03-29 | 이천열 | 과립 석탄회를 이용한 유기질 비료 제조방법 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2337588A1 (fr) * | 1976-01-09 | 1977-08-05 | Biez Georges | Procede pour l'elimination des ordures menageres sans pollution accessoire |
WO1990008605A1 (fr) * | 1989-01-27 | 1990-08-09 | Rudolf Hayden | Procede de consolidation et/ou d'etancheification d'anciens depots de dechets |
EP0398410A1 (fr) * | 1989-05-18 | 1990-11-22 | PELT & HOOYKAAS B.V. | Procédé pour l'immobilisation de métaux nocifs et de substances organiques |
DE9205590U1 (de) * | 1992-04-24 | 1992-08-13 | REKO Bio-Terra GmbH, 7123 Sachsenheim | Rekultivierungsstoff unter Verwendung von ausgefaultem Klärschlamm |
DE4211013A1 (de) * | 1992-04-02 | 1993-10-07 | Natur Technik Verwertung Gmbh | Reststoffgranulat und Verfahren zu seiner Herstellung |
US5401312A (en) * | 1993-10-22 | 1995-03-28 | Hanst; Donald R. | Method for soil surface stabilization |
DE4436659A1 (de) * | 1993-10-22 | 1995-04-27 | Georg Stefan Husz | Verfahren zur Erzeugung von Erde |
-
1995
- 1995-09-12 FR FR9510646A patent/FR2738507A1/fr active Pending
-
1996
- 1996-09-09 CA CA 2205049 patent/CA2205049A1/fr not_active Abandoned
- 1996-09-09 EP EP96931095A patent/EP0793631A1/fr not_active Withdrawn
- 1996-09-09 WO PCT/FR1996/001380 patent/WO1997010191A1/fr not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2337588A1 (fr) * | 1976-01-09 | 1977-08-05 | Biez Georges | Procede pour l'elimination des ordures menageres sans pollution accessoire |
WO1990008605A1 (fr) * | 1989-01-27 | 1990-08-09 | Rudolf Hayden | Procede de consolidation et/ou d'etancheification d'anciens depots de dechets |
EP0398410A1 (fr) * | 1989-05-18 | 1990-11-22 | PELT & HOOYKAAS B.V. | Procédé pour l'immobilisation de métaux nocifs et de substances organiques |
DE4211013A1 (de) * | 1992-04-02 | 1993-10-07 | Natur Technik Verwertung Gmbh | Reststoffgranulat und Verfahren zu seiner Herstellung |
DE9205590U1 (de) * | 1992-04-24 | 1992-08-13 | REKO Bio-Terra GmbH, 7123 Sachsenheim | Rekultivierungsstoff unter Verwendung von ausgefaultem Klärschlamm |
US5401312A (en) * | 1993-10-22 | 1995-03-28 | Hanst; Donald R. | Method for soil surface stabilization |
DE4436659A1 (de) * | 1993-10-22 | 1995-04-27 | Georg Stefan Husz | Verfahren zur Erzeugung von Erde |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020023591A (ko) * | 2000-09-23 | 2002-03-29 | 이천열 | 과립 석탄회를 이용한 유기질 비료 제조방법 |
Also Published As
Publication number | Publication date |
---|---|
EP0793631A1 (fr) | 1997-09-10 |
CA2205049A1 (fr) | 1997-03-20 |
FR2738507A1 (fr) | 1997-03-14 |
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