CN114130784A - Waste packaging device and method - Google Patents
Waste packaging device and method Download PDFInfo
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- CN114130784A CN114130784A CN202111313503.0A CN202111313503A CN114130784A CN 114130784 A CN114130784 A CN 114130784A CN 202111313503 A CN202111313503 A CN 202111313503A CN 114130784 A CN114130784 A CN 114130784A
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- 239000002699 waste material Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 11
- 239000010881 fly ash Substances 0.000 claims abstract description 92
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 238000003860 storage Methods 0.000 claims abstract description 34
- 238000004056 waste incineration Methods 0.000 claims abstract description 34
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 15
- 239000000440 bentonite Substances 0.000 claims abstract description 15
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000005538 encapsulation Methods 0.000 claims description 39
- 239000003344 environmental pollutant Substances 0.000 claims description 26
- 231100000719 pollutant Toxicity 0.000 claims description 26
- 238000009792 diffusion process Methods 0.000 claims description 22
- 238000002955 isolation Methods 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 18
- 239000004568 cement Substances 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 229920006262 high density polyethylene film Polymers 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 229920002457 flexible plastic Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 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 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000000926 separation method Methods 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
- 238000001179 sorption measurement Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 16
- 239000002245 particle Substances 0.000 description 9
- 238000012856 packing Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000004088 simulation Methods 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 230000002787 reinforcement Effects 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 239000002920 hazardous waste Substances 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
- 239000000443 aerosol Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 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
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
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- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 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 packaging device and a waste packaging 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
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 a speed of about 9 percent each year. In 2018, the urban domestic garbage clearing and transporting amount in China reaches 21520.9 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 the year round reaches 40.2%, the incineration amount of the garbage reaches 21034.2 ten thousand tons, and the fly ash generated by the garbage incineration is about 631.026 ten thousand tons. The waste incineration fly ash is mainly composed of dust particles with fine particles, the incineration fly ash is low in water content and is light gray powder, the fly ash particles are uneven in size, complex in structure and variable in property, the fly ash particles mostly exist in an amorphous state and a polycrystalline polymer structure, the particle size of the fly ash particles is usually less than 100 mu m, the surface of the fly ash particles is rough, and the fly ash particles have large specific surface and high 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 SiO2、Al2O3、Fe2O3. 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 disposal of the waste incineration fly ash after solidification and stabilization in a dangerous waste safe landfill site is the most reliable disposal mode. However, due to the huge amount of generated fly ash, all storage capacities of the hazardous waste safety landfill built in China are used for disposing newly added fly ash, and all the fly ash is 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 also high in consideration of the essential solidification and stabilization 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 as high as more than 2000 yuan. The existing fly ash treatment mode and method has high cost, low efficiency and occupies 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 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 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 cooperatively treating waste incineration fly ash in a waste 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, separating the goaf or the roadway of the closed pit mine into a plurality of storage spaces by adopting a section separation 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 the waste encapsulation device;
the waste packaging device adopts the waste packaging device.
Step four, stacking a plurality of waste encapsulation devices filled with waste incineration fly ash in a storage space of a goaf or a roadway of a closed pit mine in a layered, 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, filling secondary encapsulation grouting bodies in 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; 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.
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 body.
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 is cooperatively used for treating the fly ash, and reduces hidden disaster factors such as collapse, subsidence 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 the 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 graph of a treated fly ash abandoned mine contaminant diffusion simulation without both section partition walls and secondary encapsulation grouting.
Fig. 8 is a simulation diagram of the diffusion of pollutants in a fly ash abandoned 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 seal layer, 302-bentonite sandwich layer, 303-inner seal 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 of the present invention are provided, 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 within the protection scope of the present invention.
Example 1:
this embodiment provides a waste encapsulation device, as shown in fig. 1 and fig. 2, including an outer side sealing layer 301, a bentonite sandwich layer 302 and an inner side sealing layer 303, which are sequentially attached from the outside to the inside, wherein a waste storage cavity 304 is formed in the inner side sealing 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 located at the top of the waste encapsulation 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 partition wall 2 to partition the goaf or 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 for cooperatively treating 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-processed by filling with a waste storage device, isolating with an isolation wall, and performing secondary encapsulation and grouting for 3 times is controlled to be 1-2 m around the waste storage device, and the pollution is safely controlled inside the mine isolation wall without affecting the underground environment.
Comparative example 1:
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 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 processing 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 affected.
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 adopting 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 the closed pit mine space, goaf reinforcement and cooperative disposal of fly ash in the 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 treated by directly adopting a waste mine is 13-14 m, the pollutant diffusion range is large, and the influence on the underground environment is large.
As can be seen from the comparison between the example 2 and the comparative examples 1 to 3, the diffusion range of pollutants in the abandoned mine site where the fly ash is cooperatively treated after the filling of the waste encapsulation device 3, the isolation of the section isolation wall 2 and the 3-fold treatment of the secondary encapsulation grouting body 4 is only 1-2 m, is 5% -10% of the diffusion range of pollutants after the cooperative treatment of the conventional mine, has a very good antifouling and pollution control effect, 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 (8)
1. A waste packaging device is characterized by comprising 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).
2. A waste encapsulating device as claimed in claim 1, characterised in that the outer enclosing layer (301) is integrally formed of HDPE film, flexible plastics or flexible composite material, without a seam, the outer enclosing layer (301) being integral.
3. A waste encapsulating device as claimed in claim 1, characterised in that the inner enclosing layer (303) is integrally formed of HDPE film, flexible plastics or flexible composite material, without a connecting seam, and the inner enclosing layer (303) is integrally formed and integrally connected to the outer enclosing layer (301) at the location of the port (305).
4. The waste encapsulation device according to claim 1, wherein the bentonite sandwich layer (302) is bentonite slurry with water content of 30-100%, can effectively adsorb pollutants, and the thickness of the sandwich layer (302) is 1-10 cm.
5. 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 waste incineration power plant, has stable stratum and complete goaf and 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 encapsulating apparatus (3) as claimed in claim 1.
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;
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 roadway (1) of the closed pit mine of the waste encapsulation device (3) filled with the waste incineration fly ash.
6. The method for the collaborative disposal of waste incineration fly ash in the abandoned mine, as set forth in claim 5, wherein, in the second step, the section isolation wall (2) is cast by adopting materials with high impermeability and high strength as a seamless connection whole.
7. 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 5, 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 3 m.
8. The method for the co-disposal of fly ash from waste incineration in the abandoned mine according to claim 5, wherein the secondary encapsulating grouting body (4) is cement clay mortar, cement fly ash bentonite slurry or pure bentonite slurry, has good filling and pollutant adsorption effects, and slightly expands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111313503.0A CN114130784B (en) | 2021-11-08 | 2021-11-08 | Waste packaging device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111313503.0A CN114130784B (en) | 2021-11-08 | 2021-11-08 | Waste packaging device and method |
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| CN114130784A true CN114130784A (en) | 2022-03-04 |
| CN114130784B CN114130784B (en) | 2022-12-13 |
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