IE64544B1 - Process for the insolubilization and agglomeration of residues from the purification of smoke produced by the incineration of waste - Google Patents
Process for the insolubilization and agglomeration of residues from the purification of smoke produced by the incineration of wasteInfo
- Publication number
- IE64544B1 IE64544B1 IE99390A IE99390A IE64544B1 IE 64544 B1 IE64544 B1 IE 64544B1 IE 99390 A IE99390 A IE 99390A IE 99390 A IE99390 A IE 99390A IE 64544 B1 IE64544 B1 IE 64544B1
- Authority
- IE
- Ireland
- Prior art keywords
- water
- residues
- process according
- silica
- waste
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 17
- 239000002699 waste material Substances 0.000 title claims description 16
- 238000000746 purification Methods 0.000 title claims description 10
- 239000000779 smoke Substances 0.000 title claims description 5
- 238000005054 agglomeration Methods 0.000 title 1
- 230000002776 aggregation Effects 0.000 title 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910001868 water Inorganic materials 0.000 claims abstract description 28
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 22
- 239000010881 fly ash Substances 0.000 claims abstract description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 8
- 239000004571 lime Substances 0.000 claims abstract description 8
- 239000008247 solid mixture Substances 0.000 claims abstract 4
- 238000002386 leaching Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 13
- 239000010425 asbestos Substances 0.000 claims description 5
- 229910052895 riebeckite Inorganic materials 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000011701 zinc Substances 0.000 description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 239000011133 lead Substances 0.000 description 18
- 239000010949 copper Substances 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 10
- 150000002739 metals Chemical class 0.000 description 10
- 239000002440 industrial waste Substances 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
- 229910052681 coesite Inorganic materials 0.000 description 5
- 229910052906 cristobalite Inorganic materials 0.000 description 5
- 229910052682 stishovite Inorganic materials 0.000 description 5
- 229910052905 tridymite Inorganic materials 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 238000004587 chromatography analysis Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000002198 surface plasmon resonance spectroscopy Methods 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010808 liquid waste Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- WHOPEPSOPUIRQQ-UHFFFAOYSA-N oxoaluminum Chemical compound O1[Al]O[Al]1 WHOPEPSOPUIRQQ-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/10—Burned or pyrolised refuse
- C04B18/105—Gaseous combustion products or dusts collected from waste incineration, e.g. sludge resulting from the purification of gaseous combustion products of waste incineration
- C04B18/106—Fly ash from waste incinerators
-
- 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
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
Incinerator fly ash (FA) is mixed with small quantities of water of between 10 % and 35 % of its weight, the product being then compacted and extruded. In practice it is advantageous to add small quantities of lime to the water to have a pH of 7.4 to 11.6, it being possible for this lime to be combined with a product containing silica and/or alumina. Solid compositions which are practically insoluble in water and nonpolluting are obtained.
Description
The present invention relates to the treatment of residues from the purification of smoke produced by the incineration of waste.
It is a known fact that in the combustion of waste of * various origins incinerators produce not only clinker and fine particles of fly ash (hereinafter called FA), but also gaseous effluents which then undergo a purification treatment by means of lime. This treatment causes the formation of smoke purification residues (hereinafter called SPR). The essential contents of these residues consist of sulphates, chlorides, lime which has not reacted in the purification and, in addition to the unburnt products, considerable quantities of heavy metals such as lead, copper, zinc, cadmium, iron, aluminium, etc.
When they are caused to come in contact with water these, waste substances produce a very basic pH value owing to their high lime content. They tend to solubilize when exposed to weather conditions and to result, by lixiviation, in pollution due mainly to toxic metals.
It is true that for SPR insolubilization methods have I been proposed which essentially consist of treatments with * Sodium Silicate, Portland Cement or mixtures of these products.
The compositions obtained with such treatments are highly basic (the pH being generally above 12) so that their ability to fix the metallic elements, particularly lead and zinc, tends to remain unsatisfactory. Premature formation of hydrogen, in accordance with the following reaction, may likewise occur: * OH- + H20 + Al -* Al2 02 + 3/2 H2 In order to obviate these drawbacks, mainly due to the considerable basicity of the SPR treated, the applicant has performed numerous experiments designed to convert the SPRs into products practically insolable in water and easy to agglomerate in inert masses, which are non-toxic, as they mainly trap the metallic elements, and are suitable for use, if necessary, in concrete.
According to the essential characteristic of the process covered by the invention, the SPRs, with a high lime content, are mixed both with a product containing at least 60% silicon and/or alumina and also with an aqueous product, the quantity of the product with a silicon and/or alumina content being sufficient to give the mixture a pH value between 7 and 11.5 while the quantity of aqueous product corresponds to a quantity of water between 15 and 160% of the total weight of the other constituents.
The product with a high silicon and/or alumina content may come from a variety of sources. Use may be made, for example, of fossil silicon (vhich generally contains at least 80% Si02), silicon or a crushed pozzolana, silicon waste, e.g. from the ferrosilicon manufacturing process, or asbestos waste. The source of alumina may consist of pulverulent alumina, but it is also of advantage to use silico-aluminates such as clay or, still better, incineration fly ash (FA), vhich, as is known, itself constitutes waste which may prove dangerous owing to the presence of toxic metals released by the leaching process.
Thanks to the process provided by the invention these toxic metals, as well as those contained in the SPRs, can be largely trapped.
According to a further characteristic of the invention the added vater may consist not only of ordinary water or a surface or subterranean water but also of essentially aqueous waste, such as sludge from a purification plant for urban or * industrial water, or discharged leaching water. In the process according to the invention the toxic products and particularly those of the metallic type present in this water are likewise trapped. In practice, the moistening and mixing operation according to the invention may be carried out in a mixer or on a conveyor belt where the required water is partly sprinkled on the SPR and its added product.
After treatment under the aforementioned conditions the resulting mixture is pumped or compacted in the form of borders, for example, or treated with one of the devices used in public works. In one variant such mixtures can also be extruded.
Without wishing to go into very detailed theoretical considerations, it may be said that the essential operation for the performance of the process covered by the invention is that of fixing the free lime of the SPR by means of the added product, which is of the silica, alumina or silicate type. In the case of silica and in the presence of the added water, for example, a compound of the type (CaO, SiO2, H2O) is formed.
When the source of silico-aluminate consists of an FA, the silico-aluminate which forms is found to be of the gehlinite type: (CaO)2, Αΐ2Οβ, SiO2, 8H2O, or else aluminates of the type (CaO)4, A12Oj or 13H2O are formed. In practice the quantity of product with a high silica and/or alumina content added to the SPR is thus regulated in such a way as to ensure that the ratio of SiO2 and/or A12O^ to CaO will be at least 0.8. i The following examples, given by way of illustration, show the results obtained by the application of the process in its different versions..
Example 1 The starting substance was an SPR (hereinafter called I), obtained from an industrial waste incinerator and essentially containing the following: 26% of Cl2, 7% of Na, 0.7% of K, 16% of SO42-, 30% of CaO and also metals such as (in parts per million or ppm) : Pb : 26.4,Cu : 0.8 : Cd : 1.1 : Zn : 5.6 ; Fe : 4. the CRO (chemical requirement in oxygen) being 5990 ppm.
The source of water available was a liquid industrial waste (II) which came from a purifying station for residual effluents and which, for a pH of 7 and a CRO of 91500, essentially contained the following metals (in ppm) : Pb ; 0.5 ; Cu : 90 ; Cd : 2 ; Zn : 3 ; Fe : 0.4 ; Al : 20. parts (by weight) of the waste (I) were added to 50 parts (by weight) of the aqueous effluent (II), after which it was mixed with 20 parts (by weight) of fossil silica.
This latter contained about 83% of SiO2, 5% of Al2O2 and small quantities of Al, Fe, Ti, Ca, Mg and K.
The malaxated mixture hardened in a few days. After 8 months some of the solid mass was broken into pieces and 50 g placed in a chromatography column, distilled water being caused to pass through at a rate of 100 ml per hour. The leached product obtained had a CRO reduced down to only 2900 and contained the following metals (proportions given in ppm) : pb : 1 ; Cu : 1.6 ; Cd : 0.2 ; Zn : 0.2 ; Fe : 1.2 ; Al : 0.4.
Example 2 This time 50 parts of the SPR (I) were mixed with 100 parts ι of a liquid waste (III) obtained from the scouring and cleaning of plates in the automobile industry and containing for a pH * of 14 and a CRO of 5096 the following approximate proportions of metals (in ppm): Pb 0.1, Cu 0.8, Cd 0.1, Zn 0.8, Fe 83.2, Al 0.1. parts of fossil silica were added and the following leaching results in the chromatography column test were obtained, operating as in Ex.l, from a specimen which had only hardened for 14 days: pH 9.5, CRO 3000, Pb 0.1, Cu 0.8, Cd 0.1, Zn 0.1, Fe 0.1.
Example 3 parts of (I) were mixed with 100 parts of a liquid waste..(IV) in this case consisting of sludge from an urban effluent purification plant and containing, for a CRO of 2450, the following proportions (in ppm): Pb 81, Cu 274, Cd 7.3, Zn 780, Fe 9727.
After the addition of 25 parts (still by weight) of crushed silica the hardening was found to have taken place in a few days and the folloving leaching results vere obtained in the same column test as in Ex.l: CRO 216, Pb 0.1, Cu 0.7, Cd 0.03, Zn 0.016, Fe 0.16.
Example 4 * The operation vas performed as in Ex.3 but on 100 parts (by veight) of I and 100 parts of (IV), adding 25 parts of crushed pozzolana. The leaching gave the folloving results: CRO 220, Pb 0.2, Cu 0.1, Cd 0.14, Zn 0.04, Fe 0.03.
Example 5 The treated SPR (V) in this case came from a municipal waste incinerator and not from an industrial waste incinerator. This waste, with a pH of 13, was characterized by the following leaching results, according to DIN Standard 38414: Pb 28, Cu 1.3, Cd 1.8, Zn 3.1, Fe 4.2 and Al 3. 120 parts (by weight) of V were mixed with 120 parts of silica obtained from the thermal decomposition of pebbles and with 100 parts of ordinary water. The solidification took place in about one hour. The final material obtained, when subjected to the leaching test prescribed in DIN 38414, vas characterized by the following concentrations (in ppm): Pb 0.4, Cu 0.1, Cd 0.1, Zn 0.1, Fe 0.1, AK0.5.
Example 6 This example illustrates the addition, as a source of silico-aluminate and by vay of a variant, of a fly ash (FA) obtained in the incineration of municipal waste in accordance with Ex.5 and characterized by the following leaching results when tested according to DIN 38414: Pb 74, Cu 0.8, Cd 465, Zn 3800, Fe 1, Al 4. The pH of the FA vas 7.3. 120 parts of the SPR of Ex.5 vas mixed in a malaxator vith 30 parts of FA, 100 parts of clay (source of silica) and 85 parts of ordinary vater. The solidification was completed in about one hour. After leaching according to DIN 38414 the following concentrations of the metals concerned were obtained (given in ppm): Pb 0.3, Cu 0.1, Cd 0.1, Zn 0.1, Fe 0.1 and Al < 4.
The mechanical compressive strength on a sample after 28 days vas 23 MPa (megapascals).
Example 7 This example illustrates the use of alumina in place of silica as in the preceding examples.
In this case the starting material consisted of the SPR < used in Ex.l (I) and a fly ash (FA) from the incineration of domestic waste, giving the following leaching results (in ppm): Pb 6, Cd 4, Zn 7.
The mixing operation was carried out with 132 parts of (I), 34 parts of the FA mentioned in the foregoing, 63 parts of pulverulent alumina and 54 parts of ordinary water.
After the leaching of a hardened sample in accordance with the aforementioned DIN standard, the concentrations of the metals (in ppm) had been reduced to: Pb 0.5, Cd 0.1 and Zn 1.
Example 8 To 50 parts of (I) and 100 parts of (II) were added 167 parts of fly ash from coal as the source of silica.
The solidified material underwent the leaching test in a chromatography column, the following results (in ppm) having been obtained after 18 days: Pb 0.8, Cu 0.1, Zn 0.1, Fe 0.4, Al 4, CRO 1900.
Example 9 The operation vas performed as in Ex.8 but vith 116 parts of (I), 125 parts of (II) and 42 parts, as a source of silica, of an asbestos waste obtained from a school. c The leaching in the column test gave the following results: Pb 4.1, Cu 3.3, Cd 0.5, Zn 4.9, Fe 1.5,.Al<^p.l and CRO 3816. ( Example 10 This test was carried out 30 parts (by weight) of a mixture of 4 parts of the SPR V of Ex.5 and 1 part of the FA of Ex.6. To this were added 100 parts of water and 62 parts, as the silica source, of an asbestos waste obtained from'a hospital.
After 9 days a sample of the hard material underwent the leaching test prescribed in DIN 38414. The following concentrations of metals (in ppm) were obtained: Pb 0.1, Cu 0.1, Cd 0.1, Zn 0.1, Fe 1, Al 1, CRO 1400.
The very low degree of leaching found in Ex.9 and in the foregoing Ex.10 indicates that the process according to the invention resulted in the complete encapsulation of the asbestos fibres.
Finally, it will be noted that the mixtures obtained with the invention can thus be supplemented, after solidification, by the usual additives for the preparation of compositions for concrete (such as charges, fluidizers, aggregates, etc.) when intended for use in building or public works.
Claims (9)
1. A process for treating residues from purification of smoke ·'♦ produced by incineration of waste, for the purpose of obtaining solid compositions that are substantially insoluble in water and '« non-polluting, characterized in that the said residues, rich in lime, are mixed firstly with a product containing at least 60% of silica and/or alumina, and secondly with an aqueous product, the quantity of the product containing silica and/or alumina being sufficient to bring the pH of the mixture to a value between 7 and 11.5, while the quantity of aqueous product corresponds to a quantity of water between 15 and 160% of the total weight of the other constituents.
2. A process according to Claim 1, characterized in that the quantity of the said product of addition to the residue is so controlled that the ratio of SiO 2 and/or AI2O3 to CaO is at least equal to 0.8.
3. A process according to Claim 1 or Claim 2, characterized in that the said product containing silica and/or alumina is selected from the group comprising: a siliceous agent such as fossil silica, crushed silica, crushed pozzolana, thermosilicon manufacturing residues, asbestos residues, powdered alumina, a si1ico-aluminate such as clay or, again, incineration fly ash.
4. A process according to any one of Claims 1 to 3, characterized e in that the added aqueous product is selected from the group: ordinary water, surface or subterranean water, residual water, < sludge from a water purification plant, and discharged leaching water.
5. A process according to Claim 4, characterized in that part of the water is applied by sprinkling, the other part being added during mixing, the final mixture being then compacted or extruded. 5
6. A process according to any one of Claims 1 to 5, characterized in that the mixtures obtained are added, before solidification, to the usual additives of compositions for concretes for applications in building and public works.
7. A process according to Claim 1 for treating residues
8. 10 from smoke purification (SPW) produced by incineration of waste for the purpose of obtaining a solid composition which is substantially insoluble in water and nonpolluting, substantially as hereinbefore described and exemplified.
9. 15 8. A solid composition which is practically insoluble in water and nonpolluting, whenever obtained by a process claimed in a preceding claim.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8903586A FR2644372B1 (en) | 1989-03-20 | 1989-03-20 | PROCESS FOR INSOLUBILIZATION AND AGGLOMERATION OF INCINERATION FLY ASH |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE900993L IE900993L (en) | 1990-09-20 |
| IE64544B1 true IE64544B1 (en) | 1995-08-23 |
Family
ID=9379847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE99390A IE64544B1 (en) | 1989-03-20 | 1990-03-16 | Process for the insolubilization and agglomeration of residues from the purification of smoke produced by the incineration of waste |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0389328B1 (en) |
| CA (1) | CA2012518C (en) |
| DE (1) | DE69022089T2 (en) |
| DK (1) | DK0389328T3 (en) |
| ES (1) | ES2080132T3 (en) |
| FR (1) | FR2644372B1 (en) |
| GR (1) | GR3017336T3 (en) |
| IE (1) | IE64544B1 (en) |
| PT (1) | PT93474B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0492675A1 (en) * | 1990-12-20 | 1992-07-01 | Dirk De Neef | Process for the consolidation of waste sludge or similar |
| DE4134737A1 (en) * | 1991-10-21 | 1993-04-22 | Wilfried Schraufstetter | METHOD FOR TREATING METAL-CONTAINING AND / OR MINERAL SLUDGES AND / OR DAMP METAL OR MINERAL FIBER FABRICS FOR PROCESSING |
| FR2685226A1 (en) * | 1991-12-18 | 1993-06-25 | Sol Cie | METHOD FOR STABILIZING AND SOLIDIFYING DOMESTIC GARBAGE INCINERATION PRODUCTS, PRODUCTS RESULTING FROM THE PROCESS, AND PRODUCTS THEREOF FOR ITS IMPLEMENTATION |
| FR2693927B1 (en) * | 1992-07-24 | 1994-10-07 | Philippe Pichat | Process and apparatus for obtaining stabilized molded materials from waste. |
| FR2712829B1 (en) * | 1993-11-26 | 1996-01-26 | Pichat Philippe | Process for the manufacture of a solid by mixing hydrates of alkaline earth oxides and hydrates of heavy metal oxides. |
| FR2714316B1 (en) * | 1993-12-29 | 1996-03-15 | 3F | Process for the treatment of toxic waste ash by incorporation into concrete with which blocks are formed which are stored. |
| FR2721017B1 (en) * | 1994-06-13 | 1996-09-06 | Jean Couturier | Active load for concrete. |
| DE19847857C2 (en) * | 1998-10-16 | 2002-01-31 | Oliver Gohlke | Process for treating combustion residues, in particular slag from waste incineration plants |
| BE1015866A3 (en) * | 2003-01-31 | 2005-10-04 | Group Portier Ind | Incinerator smoke solid residue treatment comprises washing with hot water to dissolve soluble residues and precipitate heavy metals |
| FR3050947B1 (en) * | 2016-05-09 | 2018-06-01 | Lab Geodur Gmbh | METHOD FOR STABILIZING RESIDUES RESULTING FROM THE COMBUSTION OF WASTE |
| AT519910B1 (en) * | 2017-04-27 | 2021-08-15 | Wiener Kommunal Umweltschutzprojektgesellschaft Mbh | Process for the treatment and decontamination of fly ash |
| CN111992177B (en) * | 2020-09-07 | 2022-09-02 | 贵州大学 | Non-thermal activation red mud particle adsorbent and preparation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2950462A1 (en) * | 1979-12-14 | 1981-06-19 | VFI Verwertungsgesellschaft für Industrierückstände mbH, 3161 Dollbergen | METHOD FOR THE DISPOSAL AND FINAL STORAGE OF WASTE MATERIALS |
| US4472198A (en) * | 1982-01-29 | 1984-09-18 | American Fly Ash Company | Process and system of wasting fly ash and product produced thereby |
| DE3436085C2 (en) * | 1984-10-02 | 1986-08-14 | Heinrich 4773 Möhnsee Brühne | Process for depositing dusts containing dioxin and device for carrying out the process |
| JPS61133186A (en) * | 1984-12-03 | 1986-06-20 | Mamoru Wakimura | Solidifying method of various incineration ash |
| DE3641786A1 (en) * | 1986-06-21 | 1987-12-23 | Georg Dipl Chem Dr Phi Fritsch | Process for disposing of fly dusts and/or slags from refuse incineration plants |
-
1989
- 1989-03-20 FR FR8903586A patent/FR2644372B1/en not_active Expired - Lifetime
-
1990
- 1990-03-12 EP EP19900400641 patent/EP0389328B1/en not_active Expired - Lifetime
- 1990-03-12 ES ES90400641T patent/ES2080132T3/en not_active Expired - Lifetime
- 1990-03-12 DK DK90400641T patent/DK0389328T3/en active
- 1990-03-12 DE DE69022089T patent/DE69022089T2/en not_active Expired - Fee Related
- 1990-03-16 IE IE99390A patent/IE64544B1/en not_active IP Right Cessation
- 1990-03-16 PT PT93474A patent/PT93474B/en not_active IP Right Cessation
- 1990-03-19 CA CA 2012518 patent/CA2012518C/en not_active Expired - Fee Related
-
1995
- 1995-09-07 GR GR950402374T patent/GR3017336T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GR3017336T3 (en) | 1995-12-31 |
| DE69022089T2 (en) | 1996-04-25 |
| ES2080132T3 (en) | 1996-02-01 |
| PT93474B (en) | 1996-03-29 |
| FR2644372B1 (en) | 1992-01-17 |
| EP0389328B1 (en) | 1995-09-06 |
| CA2012518C (en) | 2001-07-03 |
| DK0389328T3 (en) | 1995-12-27 |
| IE900993L (en) | 1990-09-20 |
| EP0389328A1 (en) | 1990-09-26 |
| CA2012518A1 (en) | 1990-09-20 |
| FR2644372A1 (en) | 1990-09-21 |
| DE69022089D1 (en) | 1995-10-12 |
| PT93474A (en) | 1990-11-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Patent lapsed |