CN114130784B - Waste packaging device and method - Google Patents
Waste packaging device and method Download PDFInfo
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- CN114130784B CN114130784B CN202111313503.0A CN202111313503A CN114130784B CN 114130784 B CN114130784 B CN 114130784B CN 202111313503 A CN202111313503 A CN 202111313503A CN 114130784 B CN114130784 B CN 114130784B
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- 239000002699 waste material Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004806 packaging method and process Methods 0.000 title claims description 10
- 239000010881 fly ash Substances 0.000 claims abstract description 89
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 238000003860 storage Methods 0.000 claims abstract description 34
- 238000004056 waste incineration Methods 0.000 claims abstract description 32
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 16
- 239000000440 bentonite Substances 0.000 claims abstract description 16
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000005538 encapsulation Methods 0.000 claims description 35
- 239000003344 environmental pollutant Substances 0.000 claims description 28
- 231100000719 pollutant Toxicity 0.000 claims description 28
- 238000002955 isolation Methods 0.000 claims description 25
- 238000009792 diffusion process Methods 0.000 claims description 22
- 239000002002 slurry Substances 0.000 claims description 18
- 239000004568 cement Substances 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 229920006262 high density polyethylene film Polymers 0.000 claims description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 2
- 239000004567 concrete Substances 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 239000011178 precast concrete Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 16
- 238000012856 packing Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000011278 co-treatment Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229920002457 flexible plastic Polymers 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
- B09B1/004—Covering of dumping sites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
-
- 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)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a waste encapsulating device and a method, which comprises an outer side sealing layer, a bentonite sandwich layer and an inner side sealing layer which are sequentially attached from outside to inside, wherein a waste storage cavity is arranged in the inner side sealing layer; the waste storage cavity is communicated with the waste storage cavity, and a sealing cover is arranged on the port. The invention can effectively solve the problems of high treatment cost and large occupation of land and material resources of the waste incineration fly ash, and reasonably utilizes underground resources of the closed pit mine while solving the problem of safe and efficient treatment of the waste fly ash. The waste storage device for the canned waste incineration fly ash has the advantages of simple structure, convenience in operation, good sealing property, practicability and reliability. The closed pit mine has the advantages of huge storage space, low fly ash disposal cost, safety, reliability and no pollution.
Description
Technical Field
The invention belongs to the technical field of mines, relates to hazardous waste disposal, and particularly relates to a waste packaging device and a method.
Background
Along with the improvement of the living standard of residents in China, the production of urban domestic garbage is increased year by year, and the production of the domestic garbage is increased at the speed of about 9 percent each year. In 2018, the urban domestic garbage clearing and transporting amount in China reaches 21.520.9 ten thousand tons. The domestic garbage incineration can realize the reduction and the energy recycling of the garbage. By 2018, the harmless incineration treatment rate of the garbage in China all year round reaches 40.2%, the incineration amount of the garbage reaches 21 034.2 ten thousand tons, and the fly ash generated by garbage incineration is about 631.026 ten thousand tons. The waste incineration fly ash mainly consists of dust particles with fine particles, and the incineration fly ash contains waterThe fly ash has low rate, is light grey powder, has uneven size of fly ash particles, complex structure and variable properties, exists in an amorphous state and a polycrystalline polymer structure, generally has the particle size of the fly ash particles smaller than 100 mu m, has rough surface, and has larger specific surface and higher porosity. The chemical components of the incineration fly ash comprise Cl, ca, K, na, si, al, O and other elements, and the main chemical components are CaO and SiO 2 、Al 2 O 3 、Fe 2 O 3 . In addition, the incineration fly ash often contains heavy metals with high concentration, such as Hg, pb, cd, cu, cr, zn and the like, and the heavy metals mainly exist in the form of aerosol small particles and are enriched on the surfaces of fly ash particles; meanwhile, the incineration fly ash also contains a small amount of dioxin and furan, so the incineration fly ash has strong potential hazard.
At present, the methods applied to incineration fly ash treatment in China mainly comprise a safe landfill method, a solidification stabilization method and a wet chemical treatment method. The most reliable disposal method is to dispose the waste incineration fly ash after solidification and stabilization in a dangerous waste safe landfill. However, due to the huge amount of fly ash, all storage capacities of the dangerous waste safety landfill sites built in China are used for disposing the newly added fly ash, and all the fly ash can be filled in less than one year. Meanwhile, the investment cost of the safe landfill site is high, and the cost of safe landfill disposal is high in consideration of the essential curing and stabilizing operation before landfill.
In the prior art, the wet chemical treatment method has low operation cost and can recover salts and heavy metals, but has the problems of high difficulty and high cost in the treatment of soluble salts and drainage. The solidification and stabilization method has simple treatment and low investment, but can lead to large capacity increase of a solidified body of the fly ash, large space occupation and difficult landfill. The safe landfill method not only occupies a large amount of land, but also has extremely high landfill treatment cost, and the cost per ton is up to more than 2000 yuan. The existing fly ash treatment mode and method have high cost, low efficiency and occupy a large amount of land and material resources.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a waste packaging device and a waste packaging method, and solve the technical problem that the waste treatment occupies land surface resources in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a waste packing device comprises an outer side sealing layer, a bentonite sandwich layer and an inner side sealing layer which are sequentially attached from outside to inside, wherein a waste storage cavity is formed in the inner side sealing layer; the waste storage cavity is communicated with the waste storage cavity, and a sealing cover is arranged on the port.
The invention also has the following technical characteristics:
the outer side sealing layer is made of an HDPE film, flexible plastic or flexible composite material integrally, is free of connecting seams, and is an organic whole.
The inner side sealing layer is integrally made of an HDPE film, flexible plastic or flexible composite material and has no connecting seam, and the inner side sealing layer is an organic whole and is connected with the outer side sealing layer into a whole at the position of the port.
The bentonite interlayer is bentonite slurry with the water content of 30-100%, can effectively adsorb pollutants, and is 1-10 cm thick.
The invention also provides a method for co-processing waste incineration fly ash in a abandoned mine, which comprises the following steps:
screening a closed pit mine which is close to a waste incineration power plant, has stable stratum and complete goaf and roadway;
secondly, isolating the goaf or the roadway of the closed pit mine into a plurality of storage spaces by adopting a section isolation wall;
step three, filling fly ash or fly ash slurry of the waste incineration power plant into a waste storage cavity through a port of a waste encapsulation device through a pipeline; sealing the port with a sealing cover after filling, and sealing the fly ash or fly ash slurry in a waste encapsulating device;
the waste packaging device adopts the waste packaging device.
Step four, stacking a plurality of waste encapsulation devices filled with the waste incineration fly ash in a storage space of a gob or a roadway of a closed pit mine in a layering, orderly and orderly manner;
step five, the section partition walls trap waste encapsulation devices which are stored in the goaf or the roadway and are filled with incineration fly ash or fly ash slurry into different isolation units;
step six, pouring secondary encapsulation grouting bodies into gaps among the waste encapsulation devices in each isolation unit; the secondary encapsulation grouting body further fixes and encapsulates the waste encapsulation device in the isolation unit, and the leakage of pollutants is controlled;
seventhly, repeating the second step to the sixth step, and filling the gob or the roadway of the closed pit mine with the safely treated waste incineration fly ash; reasonable utilization of closed pit mine space, reinforcement of a roadway or a goaf and cooperative disposal of fly ash in a garbage power plant are realized.
And step eight, arranging a plurality of ground pollutant diffusion monitoring holes around the goaf or the roadway of the closed pit mine of the waste encapsulating device filled with the waste incineration fly ash. And monitoring the effect of the closed pit mine for cooperatively treating the waste incineration fly ash and the pollutant diffusion condition.
Preferably, the section isolation wall is cast by adopting materials with high impermeability and high strength to form a seamless connection whole.
Preferably, the section isolation wall is a cast-in-place concrete wall, a ground precast concrete wall, a cement fly ash slurry wall or a cement clay slurry wall, and the thickness of the section isolation wall is 0.5 m-3 m.
Preferably, the secondary encapsulation grouting body is cement clay mortar, cement clay slurry, cement fly ash bentonite slurry or pure bentonite slurry, has good effects of filling and adsorbing pollutants, and slightly expands.
Compared with the prior art, the invention has the following technical effects:
the invention can effectively solve the problems of high treatment cost and large occupation of land and material resources of the waste incineration fly ash, and reasonably utilizes underground resources of the closed pit mine while solving the problem of safe and efficient treatment of the waste fly ash.
(II) the waste storage device for the canned waste incineration fly ash has the advantages of simple structure, convenient operation, good sealing property, practicability and reliability.
(III) the closed pit mine has the advantages of huge storage space, low fly ash disposal cost, safety, reliability and no pollution.
The Invention (IV) realizes multiple sealing and multiple protection of the waste incineration fly ash, fills the closed-pit mine space while the goaf or the roadway cooperatively disposes the fly ash, and reduces hidden disaster-causing factors such as collapse, settlement and the like of the closed-pit mine.
Drawings
Figure 1 is a cross-sectional view of a waste encapsulation device of the present invention.
Figure 2 is a perspective view of the waste encapsulation device of the present invention.
FIG. 3 is a schematic diagram of the operation of the method for co-processing fly ash from waste incineration in a abandoned mine.
Fig. 4 is a schematic view of contaminant diffusion monitoring according to the present invention.
Fig. 5 is a graph showing the diffusion simulation of pollutants in a treated fly ash abandoned mine according to the invention.
Fig. 6 is a simulation diagram of the pollutant diffusion of a fly ash abandoned mine without secondary encapsulation grouting.
Fig. 7 is a simulated view of the diffusion of pollutants in a treated fly ash abandoned mine without section partition walls and secondary encapsulation grouting.
Fig. 8 is a simulation diagram of the diffusion of pollutants in a fly ash disposal mine without a waste encapsulation device, section isolation walls and secondary encapsulation grouting.
The meaning of the individual reference symbols in the figures is: 1-a goaf or a roadway, 2-a section of partition wall, 3-a waste encapsulation device, 4-secondary encapsulation grouting body and 5-a ground pollutant diffusion monitoring hole;
301-outer sealing layer, 302-bentonite sandwich layer, 303-inner sealing layer, 304-waste storage cavity, 305-port, 306-sealing cover.
The present invention will be explained in further detail with reference to examples.
Detailed Description
The following embodiments are given as examples of the present invention, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are included in the protection scope of the present invention.
Example 1:
this embodiment provides a waste enclosure apparatus, as shown in fig. 1 and fig. 2, comprising an outer enclosing layer 301, a bentonite sandwich layer 302 and an inner enclosing layer 303, which are sequentially attached from outside to inside, wherein a waste storage cavity 304 is formed in the inner enclosing layer 303; and further includes a port 305 communicating with the waste storage chamber 304, the port 305 being provided with a sealing cap 306.
The outer side sealing layer 301 is made of high-permeability-resistant and high-flexibility-resistant materials such as HDPE films or PE films, and is resistant to seepage, puncture and deformation.
The bentonite interlayer 302 is filled between the outer closed layer 301 and the inner closed layer 302, and can sufficiently adsorb and complex fly ash seeping substances of the inner closed layer.
The inner side sealing layer is made of high-impermeability, strong-flexibility, corrosion-resistant, impermeable and deformation-resistant materials such as 303HDPE films or PE films.
The waste storage cavity 304 is used for storing waste incineration fly ash, the fly ash is poured into the waste storage cavity through a port, and the fly ash or fly ash slurry is sealed in the waste packaging device by the sealing cover 306.
The port 305 is positioned at the top of the waste packaging device, the port 305 is respectively connected with the inner sealing layer 303, the bentonite sandwich layer 302 and the outer sealing layer 301 one by one, and the outer side is sealed by the sealing cover 306.
Example 2:
this embodiment provides a method for co-disposing fly ash from waste incineration in a waste mine, as shown in fig. 3 and 4, the method includes the following steps:
screening a closed pit mine which is close to a waste incineration power plant, has stable stratum and complete goaf and roadway;
secondly, adopting a section isolation wall 2 to isolate the goaf or the roadway 1 of the closed pit mine into a plurality of storage spaces;
the section isolation wall 2 is cast by adopting materials with high impermeability and high strength as a seamless connection whole.
Step three, the fly ash or fly ash slurry of the waste incineration power plant is filled into the waste storage cavity 304 through a pipeline through a port 305 of the waste encapsulation device 3; sealing the port 305 with a sealing cover 306 after filling, and sealing the fly ash or fly ash slurry in the waste encapsulation device 3;
the waste packing apparatus 3 used in example 1 was the waste packing apparatus.
Step four, stacking a plurality of waste encapsulation devices 3 filled with waste incineration fly ash in a storage space of a goaf or a roadway 1 of a closed pit mine in a layered, orderly and orderly manner;
step five, the section partition wall 2 traps the waste encapsulation device 3 which is stored in the goaf or the roadway 1 and is filled with the incineration fly ash or fly ash slurry into different isolation units;
step six, pouring secondary encapsulation grouting bodies 4 into gaps among the waste encapsulation devices 3 in each isolation unit; the secondary encapsulation grouting body 4 further fixes and encapsulates the waste encapsulation device 3 in the isolation unit, and controls the leakage of pollutants;
step seven, repeating the step two to the step six, and filling the gob or the roadway 1 of the closed pit mine with the safely treated waste incineration fly ash; the reasonable utilization of the closed pit mine space, the reinforcement of the roadway or the goaf and the cooperative disposal of the fly ash of the garbage power plant are realized.
Eighthly, arranging a plurality of ground pollutant diffusion monitoring holes 7 around the goaf or the roadway 1 of the closed pit mine of the waste encapsulating device 3 filled with the waste incineration fly ash. And monitoring the effect of the closed pit mine in cooperation with the treatment of the waste incineration fly ash and the pollutant diffusion condition.
In this embodiment, as shown in fig. 5, the abscissa and the ordinate are distances, and the unit of m is, the diffusion range of pollutants in the abandoned mine site where the fly ash is co-treated after 3 times of filling by using a waste storage device, isolation by using an isolation wall, and secondary encapsulation and grouting is controlled to be 1-2 m around the waste storage device, and the pollution is safely controlled inside the mine isolation wall, so that the underground environment is not affected.
Comparative example 1:
this comparative example shows a method of disposing of fly ash from incineration of refuse in a refuse dump mine, which is substantially the same as example 2 except that: the sixth step of example 2 is not present in this comparative example, i.e. the secondary encapsulation slip 4 is not poured in this comparative example.
In the comparative example, as shown in fig. 6, the abscissa and the ordinate are distances, the unit is m, the unit of a pollutant diffusion cloud chart is mg/L, the pollutant diffusion range of the abandoned mine site of the co-processed fly ash after 2-fold treatment by filling of the waste storage device and isolation of the isolation wall is controlled to be 3-5 m around the waste storage device, the pollution is completely controlled in the mine isolation wall, and the underground environment is not influenced.
Comparative example 2:
this comparative example shows a method of treating fly ash from incineration of refuse in a refuse dump mine, which is substantially the same as example 2 except that: the second, fifth and sixth steps of example 2 are omitted in this comparative example, i.e., neither the section partition wall 2 nor the secondary encapsulating grout 4 is poured in this comparative example.
In the comparative example, as shown in fig. 7, the abscissa and the ordinate are distances, the unit is m, the unit of the pollutant diffusion cloud chart is mg/L, the pollutant diffusion range of the abandoned mine site for the synergistic treatment of the fly ash after the filling treatment by the waste storage device is controlled to be 6-10 m around the waste storage device, and the pollutant diffusion range is in a controllable range, so that the influence on the underground environment is small.
Comparative example 3:
this comparative example shows a method of treating fly ash from incineration of refuse in a refuse dump mine, which is substantially the same as example 2 except that: this comparative example does not have step two, step five and step six of example 2; and step three in example 2 was changed to:
the goaf or the roadway 1 of the closed pit mine is directly filled with the treated waste incineration fly ash. Reasonable utilization of closed pit mine space, goaf reinforcement and cooperative disposal of fly ash in a garbage power plant are realized.
That is, in this comparative example, the waste packing device 3 was not used for packing, the section separation wall 2 was not provided, and the secondary packing slip 4 was not poured.
In the comparative example, as shown in fig. 8, the abscissa and the ordinate are distances, the unit m is a unit, the unit of a pollutant diffusion cloud chart is mg/L, the field pollutant diffusion range of the waste incineration fly ash directly treated by the abandoned mine is 13-14 m, the pollutant diffusion range is large, and the influence on the underground environment is large.
It can be known from the comparison between the example 2 and the comparative examples 1 to 3 that the diffusion range of pollutants in the abandoned mine site for the co-treatment of the fly ash after the filling of the waste encapsulating device 3, the isolation of the zone isolation wall 2 and the 3-fold treatment of the secondary encapsulating grouting body 4 is only 1 to 2m, is 5 to 10 percent of the diffusion range of pollutants after the co-treatment of the conventional mine, has very good antifouling and pollution-control effects, can control the waste incineration fly ash within a very small range, and ensures the safety of underground water and the environment of the mine.
Claims (3)
1. A method for cooperatively treating waste incineration fly ash in a waste mine is characterized by comprising the following steps:
screening a closed pit mine which is close to a refuse incineration power plant, has stable stratum and is complete in a goaf and a roadway;
secondly, separating the goaf or the roadway (1) of the closed pit mine into a plurality of storage spaces by adopting a section separation wall (2);
step three, filling fly ash or fly ash slurry of the waste incineration power plant into a waste storage cavity (304) through a port (305) of the waste encapsulation device (3) through a pipeline; sealing the port (305) with a sealing cover (306) after filling, and sealing the fly ash or fly ash slurry in the waste encapsulation device (3);
the waste packaging device (3) comprises an outer side sealing layer (301), a bentonite sandwich layer (302) and an inner side sealing layer (303) which are sequentially attached from outside to inside, wherein a waste storage cavity (304) is arranged in the inner side sealing layer (303); the waste storage device also comprises a port (305) communicated with the waste storage cavity (304), and a sealing cover (306) is arranged on the port (305);
the outer side sealing layer (301) is integrally made of HDPE films and has no connecting seam, and the outer side sealing layer (301) is integral;
the bentonite sandwich layer (302) is bentonite slurry with the water content of 30% -100% and can effectively adsorb pollutants, and the thickness of the bentonite sandwich layer (302) is 1 cm-10 cm;
the inner side sealing layer (303) is made of an HDPE film integrally and has no connecting seam, the inner side sealing layer (303) is integrated and is connected with the outer side sealing layer (301) into a whole at the position of the port (305);
step four, stacking a plurality of waste encapsulation devices (3) filled with waste incineration fly ash in layers, tidily and orderly in a storage space of a goaf or a roadway (1) of a closed pit mine;
step five, the section partition wall (2) traps the waste encapsulation device (3) which is stored in the goaf or the roadway (1) and is filled with incineration fly ash or fly ash slurry into different isolation units;
step six, pouring secondary encapsulation grouting bodies (4) into gaps among the waste encapsulation devices (3) in each isolation unit; the secondary encapsulation grouting body (4) further fixes and encapsulates the waste encapsulation device (3) in the isolation unit, and controls the leakage of pollutants;
the secondary encapsulation grouting body (4) is cement clay mortar, cement clay slurry, cement fly ash bentonite slurry or pure bentonite slurry, has good functions of filling and adsorbing pollutants, and can expand;
step seven, repeating the step two to the step six, and filling the gob or the roadway (1) of the closed pit mine with the safely treated waste incineration fly ash;
eighthly, arranging a plurality of ground pollutant diffusion monitoring holes (7) around the goaf or the roadway (1) of the closed pit mine of the waste encapsulating device (3) filled with the waste incineration fly ash.
2. The method for disposing waste incineration fly ash in cooperation with abandoned mines according to claim 1, wherein in the second step, the section isolation walls (2) are cast by high-impermeability and high-strength materials into a seamless connection.
3. The method for the co-disposal of the fly ash from the incineration of garbage in the abandoned mine shaft as set forth in claim 1, wherein the sectional partition wall (2) is a cast-in-place concrete wall, a ground precast concrete wall, a cement fly ash slurry wall or a cement clay slurry wall, and has a thickness of 0.5m to 3m.
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| CN202111313503.0A CN114130784B (en) | 2021-11-08 | 2021-11-08 | Waste packaging device and method |
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| CN202111313503.0A CN114130784B (en) | 2021-11-08 | 2021-11-08 | Waste packaging device and method |
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| CN114130784B true CN114130784B (en) | 2022-12-13 |
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| CN107725051A (en) * | 2017-10-09 | 2018-02-23 | 北京科技大学 | A kind of municipal solid wastes deep-well closing and filling mining method |
| CN109944610A (en) * | 2019-04-09 | 2019-06-28 | 中国矿业大学 | A method of refuse landfill is reconstructed using coal mine waste roadway |
| CN110153137A (en) * | 2019-04-10 | 2019-08-23 | 伟明环保科技有限公司 | A kind of incineration of refuse flyash filler and burying method |
| CN111151549A (en) * | 2020-01-21 | 2020-05-15 | 科领环保股份有限公司 | Hazardous waste flexible landfill, hazardous waste flexible landfill system and method for controlling hazardous waste landfill risk |
| CN214040529U (en) * | 2021-01-19 | 2021-08-24 | 安徽多富士智慧物联科技有限公司 | Landfill seepage monitoring devices |
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