CN114907073A - Modified municipal sludge for covering soil of landfill and preparation method thereof - Google Patents
Modified municipal sludge for covering soil of landfill and preparation method thereof Download PDFInfo
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- CN114907073A CN114907073A CN202210584323.4A CN202210584323A CN114907073A CN 114907073 A CN114907073 A CN 114907073A CN 202210584323 A CN202210584323 A CN 202210584323A CN 114907073 A CN114907073 A CN 114907073A
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- 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
- C04B18/0418—Wet materials, e.g. slurries
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- 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
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- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
- C04B2111/00784—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes for disposal only
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- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- 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
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Combustion & Propulsion (AREA)
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- Inorganic Chemistry (AREA)
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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention specifically discloses modified municipal sludge for covering soil of a landfill, which is prepared by modifying municipal sludge by using waste incineration fly ash and cement according to the following steps: the particle size of the fly ash is 0.1-0.5mm, the cement is ordinary Portland P.O42.5 cement, the municipal sludge/(cement + waste incineration fly ash) =2 is mixed and stirred for 10 min according to the mass ratio, and the mixture is maintained for 24h and can be used as a covering material for a landfill in a rainwater-rich area; the municipal sludge has poor engineering property and high difficulty in direct recycling, and the modified municipal sludge has the condition of an earth covering material and the strength of 250kPa by selecting and optimizing the raw materials of the curing agent and the mixing proportion; the method treats waste by waste, effectively improves the efficiency of treating municipal sludge, reduces the use of cement materials, and has remarkable economic benefit and environmental protection.
Description
Technical Field
The invention belongs to the field of sludge recycling, and particularly relates to modified municipal sludge for covering soil of a landfill and a preparation method thereof.
Background
Municipal sludge is a by-product produced during the treatment of sewage and is a suspended matter precipitated from the sewage. Municipal sludge is rich in organic matters, has very complex components and properties, mainly consists of protein and lignin, and belongs to semi-solid waste.
The conventional treatment means for municipal sludge in China include building material, incineration, land utilization, landfill and waste.
Several conventional treatment methods have failed to meet the treatment of large amounts of municipal sludge, and the current development direction is roughly divided into 3 aspects: reducing weight, no harm and reuse.
Disclosure of Invention
In view of the above, the present invention aims to provide modified municipal sludge for covering soil in a landfill, wherein the modified municipal sludge has soil covering material conditions by selecting and optimizing the raw materials of the curing agent and the mixing ratio.
The technical scheme of the invention is as follows:
the modified municipal sludge for covering soil of the landfill comprises municipal sludge, waste incineration fly ash and cement, wherein the mass ratio of the municipal sludge to the mass of the waste incineration fly ash and the mass of the cement is 1.8-2.2, namely the municipal sludge/(cement + waste incineration fly ash) is 1.8-2.2, and 2 is preferably selected.
Preferably, the mass ratio of the waste incineration fly ash to the mass sum of the waste incineration fly ash and the cement is 0.4-0.8, i.e. the waste incineration fly ash/(cement + waste incineration fly ash), preferably 0.8.
Preferably, the waste incineration fly ash is mainly generated in municipal domestic waste incineration power plants by a grate furnace, is ground into powder for suitable stirring, and is sieved by a 35-mesh sieve with the particle size of 0.1-0.5 mm. The large amount of lime which is input by a power plant in order to reduce the emission of acid gas in the waste incineration process causes the excess CaO in the waste incineration fly ash.
Preferably, the municipal sludge is obtained by dehydrating a sewage treatment plant, the gravity of the municipal sludge is 10.3-10.5 kN/m3, the plastic limit is 50-60%, the liquid limit is 110-120%, the water content is 365%, and the municipal sludge is 32% of organic matters and is a wet-based material.
Preferably, the cement is ordinary Portland P.O42.5 cement with the fineness of 0.08 mm.
A preparation method of the modified municipal sludge for covering soil in the landfill comprises the following specific steps: mixing and stirring municipal sludge, waste incineration fly ash and cement for 8-12min, and then maintaining for 20-28h, so that the soil covering material can be used as a landfill soil covering material in a rainwater-rich area, wherein the municipal sludge is a wet-based material, and no additional water is required during stirring.
Preferably, the waste incineration fly ash is ground into powder before mixing, and is sieved by a 35-mesh sieve, so that the particle size is 0.1-0.5 mm.
Preferably, the waste incineration fly ash is roasted for 20-28h, preferably 24h, in an environment with a temperature of 70-75 ℃ before grinding.
The modified municipal sludge for covering soil of the landfill is more suitable for the landfill environment with moisture and rich rainwater.
The sludge solidification has the advantages of large treatment capacity, short time and the like, and the municipal sludge with high water content and low strength is modified and reused by applying a solidification mode, so that the sludge solidification can be applied to the aspects of landfill sites, soil covering, foundation materials and the like.
Compared with the prior art, the invention has the following advantages:
1. the waste incineration fly ash is used for replacing part of cement modified municipal sludge, so that the cement consumption can be saved, the waste incineration fly ash is recycled, and the cost is reduced.
2. By utilizing the characteristics of larger particle size of the waste incineration fly ash and a large number of pores on the surface of the particles, the permeability of the municipal sludge modified by the method is higher than that of the pure cement modified solidified sludge.
3. The development of the later strength of the modified municipal sludge can be effectively improved by utilizing the volcanic ash property of the waste incineration fly ash.
4. The municipal sludge is modified by the waste incineration fly ash and is used as a landfill covering soil material, so that the use of other soil materials is reduced, and the landfill space is saved.
Drawings
FIG. 1 is a schematic view of a landfill coverage;
wherein: 1-garbage, 2-middle layer earthing, and 3-day earthing;
FIG. 2 is a graph showing the change in permeability coefficient according to example 1 of the present invention;
FIG. 3 is a graph showing the change in permeability coefficient according to example 2 of the present invention;
FIG. 4 is a graph showing the change in permeability coefficient according to example 3 of the present invention.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
The cement used in the following examples is not particularly limited as long as it is a common Portland P.O42.5 cement known to those skilled in the art. The portland cement adopted in the following examples has the specific gravity of 3.0-3.2, the fineness of 0.08 mm, the screen residue of less than or equal to 10%, the initial setting time of more than or equal to 45 min, the final setting time of less than or equal to 10h, the 28d compressive strength of more than or equal to 42.5 MPa, the content of SO3 of less than or equal to 3.5%, the content of MgO of less than or equal to 5.0% and the loss on ignition of less than or equal to 5.0%.
The waste incineration fly ash is produced from a waste incineration power plant and is produced by a grate furnace. The specific gravity of the waste incineration fly ash adopted in the following examples is 2.5-2.6, the maximum particle size is not more than 0.5mm, the average particle size d50=0.3 mm, the bulk density is 1.0-1.1 g/cm3, the content of CaO is not less than 40%, and the content of SiO2 is not less than 2%.
The municipal sludge is the sludge dehydrated by a sewage treatment plant. The municipal sludge adopted in the following examples has the specific gravity of 2.1-2.2, the gravity of 10.3-10.5 kN/m3, the plastic limit of 50-60%, the liquid limit of 110-120%, the water content of 356% and the organic matter of 32%.
The waste incineration fly ash is prepared by the following method: placing the undisturbed fly ash in an environment with the temperature of 70-75 ℃, baking for 24h, grinding by using a high-speed grinder, and sieving by using a 35-mesh sieve to obtain the waste incineration fly ash. The high-speed mills used are commercially available.
The modified municipal sludge is prepared by the following method: according to the mass ratio, the waste incineration fly ash/(cement + waste incineration fly ash) =0.4-0.8, uniformly mixing fly ash and cement to serve as a modifier, taking municipal sludge/(waste incineration fly ash + cement) =2, adding the modifier into the municipal sludge, stirring for 10 min to a uniform state, and maintaining for 24h to serve as landfill covering soil.
The municipal sludge modified by the method is used as a covering soil material of a landfill, and during actual construction, construction is carried out according to the structure shown in figure 1, wherein the covering soil comprises a daily covering soil layer, a middle covering soil layer and a garbage layer, the modified municipal sludge is used as the material of the middle covering soil layer, compared with the material of the daily covering soil layer, the requirements on permeability and strength are higher, and the sequence and the method can be carried out according to methods well known by a person skilled in the art.
Example 1
The modified municipal sludge comprises the following raw materials: waste incineration fly ash, cement and municipal sludge, wherein, by mass ratio, municipal sludge/(waste incineration fly ash + cement) =2, waste incineration fly ash/(cement + waste incineration fly ash) = 0.4.
Specifically, 1334 kg of municipal sludge, 267 kg of waste incineration fly ash and 400 kg of cement are stirred and mixed by each cubic of modified municipal sludge to prepare the modified municipal sludge.
Performance testing
The test is carried out according to the existing standard of geotechnical test method (GB/T50123-2019), and the maintenance condition is underwater maintenance.
The test results are shown in fig. 2. The density is about 2000 kg/m3, the measured 7d unconfined compressive strength reaches 146 kPa, and the 28d unconfined compressive strength reaches 338 kPa; 28d, the cohesive force c reaches 124 kPa, and the internal friction angle phi is 12-15 degrees; the permeability coefficient is gradually reduced along with the increase of the age, and the permeability coefficient is basically maintained to be in the order of 10-7 cm/s.
By adopting the proportion to modify the municipal sludge, the mechanical strength and the permeability coefficient meet the requirements of temporary soil covering materials of landfill sites, the permeability is kept stable in the later period, and the strength is continuously increased.
Example 2
The modified municipal sludge comprises the following raw materials: the municipal sludge/waste incineration fly ash/cement) =2 and 0.6, wherein the mass ratio of the municipal sludge/waste incineration fly ash/cement + waste incineration fly ash is calculated.
Specifically, based on each cubic volume of modified municipal sludge, 1340 kg of municipal sludge, 402 kg of waste incineration fly ash and 268 kg of cement are stirred and mixed to prepare the modified municipal sludge.
Performance testing
The test is carried out according to the existing standard of geotechnical test method (GB/T50123-2019), and the maintenance condition is underwater maintenance.
The test results are shown in fig. 3. The density is about 2010 kg/m3, and the 7d unconfined compressive strength is measured to reach 55 kPa, and the 28d unconfined compressive strength reaches 280 kPa; the 28d cohesive force c reaches 59 kPa, and the internal friction angle phi is 25-27 degrees; the permeability coefficient is gradually reduced along with the increase of the age, and the permeability coefficient is basically maintained to be in the order of 10-7 cm/s.
The municipal sludge modified by the proportion has good later strength when rainwater conditions are rich, the mechanical strength and the permeability coefficient meet the requirements of temporary soil covering materials of landfill sites, the later permeability is kept stable, and the strength is continuously increased.
Example 3
The modified municipal sludge comprises the following raw materials: the municipal sludge/waste incineration fly ash/cement) =2 and 0.8, wherein the mass ratio of the municipal sludge/waste incineration fly ash/cement + waste incineration fly ash is calculated.
Specifically, 1340 kg of municipal sludge, 536 kg of waste incineration fly ash and 134 kg of cement are stirred and mixed according to each cubic volume of modified municipal sludge to prepare the modified municipal sludge.
Performance testing
The test is carried out according to the existing standard of geotechnical test method (GB/T50123-2019), and the maintenance condition is underwater maintenance.
The test results are shown in fig. 4. The density is about 2010 kg/m3, and the 7d unconfined compressive strength is measured to reach 56 kPa, and the 28d unconfined compressive strength reaches 86 kPa; 28d, the cohesive force c reaches 30 kPa, and the internal friction angle phi is 2-6 degrees; the permeability coefficient is gradually reduced along with the increase of the age, and the permeability coefficient is basically maintained to be in the order of 10-7 cm/s.
By adopting the proportion to modify the municipal sludge, the later mechanical strength and the permeability coefficient meet the requirements of temporary soil covering materials of landfill sites, the later permeability is kept stable, and the strength is continuously increased.
Comparative example 1
The modified municipal sludge comprises the following raw materials: the municipal sludge/waste incineration fly ash/cement) =2 and 0.4, wherein the mass ratio of the municipal sludge/waste incineration fly ash/cement + waste incineration fly ash is calculated.
Specifically, 1334 kg of municipal sludge, 267 kg of waste incineration fly ash and 400 kg of cement are stirred and mixed by each cubic of modified municipal sludge to prepare the modified municipal sludge.
Performance testing
The test is carried out according to the existing standard of geotechnical test method (GB/T50123-2019), and the maintenance condition is standard maintenance.
The density is about 2000 kg/m3, the measured 7d unconfined compressive strength reaches 199 kPa, and the measured 28d unconfined compressive strength reaches 228 kPa; 28d, the cohesive force c reaches 106 kPa, and the internal friction angle phi is 29-34 degrees; the permeability coefficient is basically maintained in the order of 10-7 cm/s.
The modified municipal sludge maintained by the method has the disadvantages of overhigh early strength, inconvenient construction and insufficient later strength development.
Comparative example 2
The modified municipal sludge comprises the following raw materials: waste incineration fly ash, cement and municipal sludge, wherein, by mass ratio, municipal sludge/(waste incineration fly ash + cement) =2, waste incineration fly ash/(cement + waste incineration fly ash) = 0.6.
Specifically, based on each cubic volume of modified municipal sludge, 1340 kg of municipal sludge, 402 kg of waste incineration fly ash and 268 kg of cement are stirred and mixed to prepare the modified municipal sludge.
Performance testing
The test is carried out according to the existing standard of geotechnical test method (GB/T50123-2019), and the maintenance condition is standard maintenance.
The density is about 2010 kg/m3, and the 7d unconfined compressive strength is measured to reach 70 kPa, and the 28d unconfined compressive strength reaches 112 kPa; 28d, the cohesive force c reaches 31 kPa, and the internal friction angle phi is 3-4 degrees; the permeability coefficient is basically maintained in the order of 10-7 cm/s.
The modified municipal sludge maintained by the method has the advantages of overhigh early strength, inconvenient construction, insufficient later strength development and lower shear strength.
Comparative example 3
The modified municipal sludge comprises the following raw materials: the municipal sludge/waste incineration fly ash/cement) =2 and 0.8, wherein the mass ratio of the municipal sludge/waste incineration fly ash/cement + waste incineration fly ash is calculated.
Specifically, 1340 kg of municipal sludge, 536 kg of waste incineration fly ash and 134 kg of cement are stirred and mixed according to each cubic volume of modified municipal sludge to prepare the modified municipal sludge.
Performance test
The test is carried out according to the existing standard of geotechnical test method (GB/T50123-2019), and the maintenance condition is standard maintenance.
The density is about 2010 kg/m3, and the 7d unconfined compressive strength reaches 26 kPa, and the 28d unconfined compressive strength reaches 50 kPa; 28d, the cohesive force c reaches 29 kPa, and the internal friction angle phi is 0-1 degree; the permeability coefficient is basically maintained in the order of 10-7 cm/s.
The method for curing and modifying the municipal sludge has the advantages that the strength is not up to 50kPa, the requirement of temporary covering soil materials of a landfill cannot be met, and the shearing strength is low.
The above examples and comparative examples show that:
the modified municipal sludge is suitable for the environment rich in rainwater, so that the modified municipal sludge is more suitable for the landfill environment rich in moisture and rainwater.
The waste incineration fly ash is used for replacing part of cement modified municipal sludge, so that the cement consumption can be saved, the waste incineration fly ash is recycled, and the cost is reduced.
The characteristics that the particle size of the waste incineration fly ash is large and a large number of pores exist on the surface of the particles are utilized, so that the pores of the municipal sludge soil body are enlarged, and the permeability of the modified municipal sludge meets the requirement of the landfill soil covering material.
The volcanic ash property of the waste incineration fly ash is utilized to modify the municipal sludge together with the cement, so that the later strength development of the modified municipal sludge is effectively enhanced.
The municipal sludge is modified by the waste incineration fly ash and is used as a landfill covering soil material, so that the use of other soil materials is reduced, and the landfill space is saved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a modified municipal sludge for landfill earthing which characterized in that: comprises municipal sludge, waste incineration fly ash and cement, wherein the mass ratio of the municipal sludge to the waste incineration fly ash and the cement is 1.8-2.2.
2. The modified municipal sludge for covering soil in a landfill site according to claim 1, wherein: the mass of municipal sludge and both the waste incineration fly ash and the cement were 2 in mass and ratio.
3. The modified municipal sludge for covering soil in a landfill site according to claim 1, wherein: the mass ratio of the waste incineration fly ash to the mass of the waste incineration fly ash and the cement is 0.4-0.8.
4. The modified municipal sludge for covering soil in a landfill site according to claim 1, wherein: the municipal sludge has the gravity of 10.3-10.5 kN/m3, the plastic limit of 50-60%, the liquid limit of 110-120%, the water content of 365% and the organic matter of 32%.
5. The modified municipal sludge for covering soil in a landfill site according to claim 1, wherein: the cement is ordinary Portland P.O42.5 cement with the fineness of 0.08 mm.
6. The modified municipal sludge for covering soil in a landfill site according to claim 1, wherein: the waste incineration fly ash is powdery and has the particle size of 0.1-0.5 mm.
7. A preparation method of the modified municipal sludge for covering soil of the landfill site as claimed in any one of claims 1 to 6 comprises the following specific steps: mixing and stirring municipal sludge, waste incineration fly ash and cement for 8-12min, and then maintaining for 20-28h, thus being used as a landfill soil covering material in a rainwater-rich area.
8. The method for preparing the modified municipal sludge for covering soil in the landfill site according to claim 7, wherein the method comprises the following steps: the waste incineration fly ash is ground into powder before being mixed, and is sieved by a 35-mesh sieve, so that the particle size is 0.1-0.5 mm.
9. The method for preparing the modified municipal sludge for covering soil in the landfill site according to claim 8, wherein the method comprises the following steps: the waste incineration fly ash is roasted for 20-28h in the environment with the temperature of 70-75 ℃ before being ground.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210584323.4A CN114907073A (en) | 2022-05-27 | 2022-05-27 | Modified municipal sludge for covering soil of landfill and preparation method thereof |
| PCT/CN2022/131837 WO2023226321A1 (en) | 2022-05-27 | 2022-11-15 | Modified municipal sludge for landfill covering and preparation method therefor |
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| CN202210584323.4A CN114907073A (en) | 2022-05-27 | 2022-05-27 | Modified municipal sludge for covering soil of landfill and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226321A1 (en) * | 2022-05-27 | 2023-11-30 | 江苏科技大学 | Modified municipal sludge for landfill covering and preparation method therefor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0120097A1 (en) * | 1983-03-18 | 1984-10-03 | LEONHARD WEISS GmbH & Co. | Process for the solidification of sludges |
| US5143481A (en) * | 1991-04-18 | 1992-09-01 | American Fly Ash Company | Method of treating municipal sewage sludge and product produced thereby |
| CN101579682A (en) * | 2009-06-04 | 2009-11-18 | 浙江理工大学 | Mixing disposal method of incineration ash of municipal sludge and domestic garbage |
| CN104761113A (en) * | 2015-04-28 | 2015-07-08 | 江苏理工学院 | Stabilization and solidification method of electroplating sludge |
| CN107162366A (en) * | 2017-07-05 | 2017-09-15 | 安徽潜润环保科技有限公司 | A kind of solidification method of disposal of municipal sewage |
| CN109053101A (en) * | 2018-10-12 | 2018-12-21 | 江苏科技大学 | The construction method of modified sewage sludge and preparation method thereof as well as cover soil material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09323099A (en) * | 1996-06-04 | 1997-12-16 | Chichibu Onoda Cement Corp | Treatment of sludge |
| JP2006213574A (en) * | 2005-02-04 | 2006-08-17 | Sumitomo Osaka Cement Co Ltd | Method for effectively utilizing phosphorus-containing sludge incineration ash |
| CN113651506A (en) * | 2021-08-31 | 2021-11-16 | 广东工业大学 | Method for solidifying infiltration filtrate sludge in new garbage landfill process |
| CN114907073A (en) * | 2022-05-27 | 2022-08-16 | 江苏科技大学 | Modified municipal sludge for covering soil of landfill and preparation method thereof |
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2022
- 2022-05-27 CN CN202210584323.4A patent/CN114907073A/en active Pending
- 2022-11-15 WO PCT/CN2022/131837 patent/WO2023226321A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0120097A1 (en) * | 1983-03-18 | 1984-10-03 | LEONHARD WEISS GmbH & Co. | Process for the solidification of sludges |
| US5143481A (en) * | 1991-04-18 | 1992-09-01 | American Fly Ash Company | Method of treating municipal sewage sludge and product produced thereby |
| CN101579682A (en) * | 2009-06-04 | 2009-11-18 | 浙江理工大学 | Mixing disposal method of incineration ash of municipal sludge and domestic garbage |
| CN104761113A (en) * | 2015-04-28 | 2015-07-08 | 江苏理工学院 | Stabilization and solidification method of electroplating sludge |
| CN107162366A (en) * | 2017-07-05 | 2017-09-15 | 安徽潜润环保科技有限公司 | A kind of solidification method of disposal of municipal sewage |
| CN109053101A (en) * | 2018-10-12 | 2018-12-21 | 江苏科技大学 | The construction method of modified sewage sludge and preparation method thereof as well as cover soil material |
Non-Patent Citations (2)
| Title |
|---|
| 刘汉桥等: "利用垃圾焚烧飞灰固化污染底泥的实验研究", 《天津城市建设学院学报》 * |
| 李丰等: "脱水污泥作填埋场覆盖材料的正交试验", 《城市环境与城市生态》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023226321A1 (en) * | 2022-05-27 | 2023-11-30 | 江苏科技大学 | Modified municipal sludge for landfill covering and preparation method therefor |
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