CN220658715U - Percolate and landfill gas collecting and lifting well for pit type fly ash landfill - Google Patents
Percolate and landfill gas collecting and lifting well for pit type fly ash landfill Download PDFInfo
- Publication number
- CN220658715U CN220658715U CN202322068358.5U CN202322068358U CN220658715U CN 220658715 U CN220658715 U CN 220658715U CN 202322068358 U CN202322068358 U CN 202322068358U CN 220658715 U CN220658715 U CN 220658715U
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- CN
- China
- Prior art keywords
- perforated pipe
- landfill
- percolate
- fly ash
- pipe
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- 239000010881 fly ash Substances 0.000 title claims abstract description 32
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 17
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 3
- 239000002956 ash Substances 0.000 claims description 2
- 239000013039 cover film Substances 0.000 claims 1
- 239000010408 film Substances 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 19
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000004936 stimulating effect Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 239000012528 membrane Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002738 chelating agent 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
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The utility model provides a percolate and landfill gas collecting and lifting well for a pit type fly ash landfill, which comprises a perforated pipe, a wellhead pipeline, a landfill gas guide and discharge solid pipe, a well cover and a percolate guide and discharge solid pipe, wherein the perforated pipe is vertically arranged between fly ash bags, the wellhead pipeline is connected above the perforated pipe, the landfill gas guide and discharge solid pipe is connected to the side surface of the wellhead pipeline, the well cover is arranged at the top of the wellhead pipeline, the well cover is penetrated with the percolate guide and discharge solid pipe, the percolate guide and discharge solid pipe extends to the bottom of the perforated pipe and is provided with a percolate pump, the lower part of the wellhead pipeline is connected with an HDPE board, and the bottom side of the HDPE board is detachably connected with a temporary covering film. The utility model pumps out the percolate at the bottom through the percolate guide and discharge solid pipe and the percolate pumping and discharging pump, and sends the percolate to the regulating tank, and the stimulating gas generated by the fly ash enters the perforated pipe through the opening of the perforated pipe and is discharged through the landfill gas guide and discharge solid pipe, so as to collect the percolate and landfill gas.
Description
Technical Field
The utility model belongs to the field of environmental engineering, and particularly relates to a percolate and landfill gas collecting and lifting well for a pit type fly ash landfill.
Background
In the prior art, the pit type fly ash landfill is a household garbage incineration fly ash landfill built by utilizing the mining abandoned pit, so that the topography of the abandoned pit is fully utilized, and the land resources are saved. Because the depth of the abandoned pit is large, the conventional drainage system for automatically flowing the percolate out of the landfill storage area is difficult to implement, or measures such as jacking pipes are needed, so that the cost is high, and under the condition, the percolate is collected and lifted in the storage area, so that the method is relatively low in cost and easy to implement.
When the fly ash is buried, solidification and stabilization are needed, ton bags are packed, and finally the fly ash is transported to a landfill storage area for stacking and filling. Because the pit is deeper, the height of the pile body is higher, the height of the collecting and lifting well is gradually increased along with the landfill pile body, and at the moment, the stability of the lifting well is related to the stable operation of the fly ash landfill. Meanwhile, because the chelating agents used for solidifying and stabilizing the fly ash are different in types, the partially-chelated fly ash can generate pungent odor, and landfill gas needs to be collected and discharged when percolate is collected. During the fly ash landfill, temporary coverage is needed to be made, so that rainwater infiltration is prevented, and the generation of percolate is reduced. Adopt welded connection between traditional temporary covering membrane and the lift well, need cut repeatedly and weld during the landfill operation, the work load is great, and the convenience of operation is related to the connected mode of lift well and temporary covering membrane.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides a percolate and landfill gas collecting and lifting well for a pit type fly ash landfill, which can collect landfill gas while collecting percolate.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a promote well is collected to filtration liquid and landfill gas for pit type flying ash landfill site, includes perforated pipe, well head pipeline, landfill gas guide and discharge real pipe, well lid and filtration liquid guide and discharge real pipe, and the perforated pipe is vertical to be arranged between the fly ash bag, and well head pipeline connection is in the perforated pipe top, landfill gas guide and discharge real pipe is connected in the side of well head pipeline, the well lid sets up in the top of well head pipeline, and the well lid wears to have filtration liquid guide and discharge real pipe, filtration liquid guide and discharge real pipe extends to the bottom of perforated pipe and is provided with filtration liquid pump, the lower part of well head pipeline is connected with the HDPE board, the bottom side of HDPE board can be dismantled and be connected with temporary covering film.
Further, the bottom side of HDPE board is provided with first hasp, and the top of interim covering film is provided with the second hasp, and first hasp and second hasp cooperation lock.
Further, the first lock catch and the second lock catch are provided with a plurality of spherical protrusions, and the spherical protrusions are arranged at equal intervals.
Further, the bottom below the perforated pipe is connected with an extension perforated pipe, and flanges are arranged at two ends of the perforated pipe and the extension perforated pipe.
Further, the flanges are connected with reinforcing steel bars in series.
Further, the reinforcing steel bars are wrapped with HDPE layers.
Further, a civil grid is arranged at the height position of the joint of the perforated pipe and the extended perforated pipe.
Further, the outside of the perforated pipe is provided with a lead wire mesh cage, broken stone is filled between the lead wire mesh cage and the perforated pipe, and a polypropylene geotechnical filter screen is arranged at the bottom of the lifting well.
Further, the particle size of the crushed stone is 40-60mm.
Compared with the prior art, the utility model has the beneficial effects that: the percolate at the bottom is pumped out through the percolate guide and discharge solid pipe and the percolate pump, and is sent to the regulating tank, and the stimulating gas generated by the fly ash enters the perforated pipe through the opening of the perforated pipe and is discharged through the landfill gas guide and discharge solid pipe, so that the collection of the percolate and the landfill gas is realized.
Drawings
FIG. 1 is a longitudinal cross-sectional view of an embodiment of the present utility model;
FIG. 2 is a transverse cross-sectional view of an embodiment of the present utility model;
FIG. 3 is a schematic view of the structure of an HDPE board according to an embodiment of the utility model;
FIG. 4 is a schematic view of a latch according to an embodiment of the present utility model;
in the drawings, the list of components represented by the various numbers is as follows:
1. perforated pipe, 2, wellhead pipeline, 3, landfill gas guide and discharge solid pipe, 4, well lid, 5, leachate guide and discharge solid pipe, 6, leachate pump, 7, HDPE board, 8, temporary covering film, 91, first lock catch, 92, second lock catch, 10, extension perforated pipe, 11, flange, 12, reinforcing steel bar, 13, civil grid, 14, wire mesh cage, 15, rubble, 16, polypropylene woven geotechnical filter screen.
Detailed Description
The present utility model will be described in further detail with reference to specific examples so as to more clearly understand the present utility model by those skilled in the art.
As shown in fig. 1-3, the fly ash landfill is provided with a plurality of fly ash bags, the percolate and landfill gas collecting and lifting well for the pit type fly ash landfill comprises a perforated pipe 1, a wellhead pipeline 2, a landfill gas guide and discharge solid pipe 3, a well cover 4 and a percolate guide and discharge solid pipe 5, the perforated pipe 1 is vertically arranged between the fly ash bags, the wellhead pipeline 2 is connected above the perforated pipe 1, the landfill gas guide and discharge solid pipe 3 is connected to the side surface of the wellhead pipeline, the well cover 4 is arranged at the top of the wellhead pipeline 2, the well cover 4 is penetrated with the percolate guide and discharge solid pipe 5, the percolate guide and discharge solid pipe 5 extends to the bottom of the perforated pipe 1 and is provided with a percolate pump 6, the lower part of the wellhead pipeline 2 is connected with an HDPE plate 7, and the bottom side of the HDPE plate 3 is detachably connected with a temporary covering film 8.
In the embodiment, the percolate guide and discharge solid pipe 5 extends to the bottom of the perforated pipe 1, the percolate pump 6 is arranged at the bottom end of the percolate guide and discharge solid pipe 5, percolate at the bottom is pumped out and sent to the regulating tank, meanwhile, fly ash can generate stimulating gas, the fly ash enters the perforated pipe 1 through the opening of the perforated pipe 1 and is discharged through the landfill gas guide and discharge solid pipe 3, and collection of the percolate and landfill gas is realized.
Specifically, as shown in fig. 1, 3 and 4, a first lock catch 91 is welded on the bottom side of the HDPE plate 3, a second lock catch 92 is welded on the top of the temporary covering film 8, and the two lock catches are locked in a matching manner, so that the HDPE plate 3 and the temporary covering film 8 can be detachably connected.
Further, the first lock catch 91 and the second lock catch 92 are provided with a plurality of spherical protrusions, the diameters of the spherical protrusions are 25mm, the distance between the spherical protrusions is 30mm, and the two lock catches squeeze the spherical protrusions into the gaps between the spherical protrusions of the other side through extrusion, so that connection and sealing are achieved.
The bottom of the lower part of the perforated pipe 1 is connected with an extension perforated pipe 10, the lengths of the perforated pipe and the extension perforated pipe are 3m, flanges 11 are arranged at two ends of the perforated pipe 1 and the extension perforated pipe 10, the flanges 11 are in welded connection with the perforated pipe 1, and similarly, the long perforated pipe 10 is also in welded connection with the flanges 11.
The flanges 11 are provided with 20 bolt holes, steel bars 12 are inserted between the bolt holes, and the flanges 11 are connected in series through the steel bars 12, so that the connection between the perforated pipe 1 and the extended perforated pipe 10 is stabilized.
Because the percolate is corrosive, preferably, the HDPE layer is wrapped outside the steel bar 12, the corrosion resistance of the steel bar 12 is improved, the steel bar 12 is prevented from being corroded by the percolate for a long time to reduce the strength, and the connection stability of the perforated pipe 1 and the extended perforated pipe 10 is further affected.
The height position of the joint of the perforated pipe 1 and the extended perforated pipe 10 is provided with a geogrid 13, improving the overall structural stability.
The outside of the perforated pipe 1 is provided with a lead wire mesh cage 13, broken stone 15 is filled between the lead wire mesh cage 14 and the perforated pipe 1, the bottom of the lifting well is provided with a polypropylene geotechnical filter screen 16, and the polypropylene geotechnical filter screen is specifically arranged on the bottom surface of the percolate pump 6 to serve as a reverse filtering layer.
The particle size of the crushed stone 15 is 40-60mm.
Mechanisms, components, and members not described in the specific structure of the present utility model are all existing structures already existing in the prior art. Can be purchased directly from the market.
The foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The utility model provides a promote well is collected to filtration liquid and landfill gas for pit type flying ash landfill site, its characterized in that, including perforated pipe (1), well head pipeline (2), landfill gas guide and discharge real pipe (3), well lid (4) and filtration liquid guide and discharge real pipe (5), perforated pipe (1) vertical arrangement is between the fly ash bag, well head pipeline (2) are connected in perforated pipe (1) top, landfill gas guide and discharge real pipe (3) are connected in the side of well head pipeline, well lid (4) set up in the top of well head pipeline (2), and well lid (4) wear to have filtration liquid guide and discharge real pipe (5), filtration liquid guide and discharge real pipe (5) extend to the bottom of perforated pipe (1) and are provided with filtration liquid pump (6), the lower part of well head pipeline (2) is connected with HDPE board (7), the bottom side of HDPE board (3) can be dismantled and be connected with interim covering film (8).
2. The leachate and landfill gas collection lift well for pit fly ash landfill according to claim 1, wherein the bottom side of the HDPE plate (3) is provided with a first latch (91), the top of the temporary cover film (8) is provided with a second latch (92), and the first latch (91) and the second latch (92) are cooperatively locked.
3. The leachate and landfill gas collection lift well for a pit-type fly ash landfill according to claim 2, wherein the first latch (91) and the second latch (92) are each provided with a plurality of spherical protrusions, the spherical protrusions being arranged at equal intervals.
4. The percolate and landfill gas collecting and lifting well for the pit-type fly ash landfill according to claim 1, wherein an extension perforated pipe (10) is connected to the bottom below the perforated pipe (1), and flanges (11) are arranged at two ends of the perforated pipe (1) and the extension perforated pipe (10).
5. The leachate and landfill gas collection lift well for pit fly ash landfill according to claim 4, wherein the plurality of flanges (11) are connected in series with reinforcing bars (12).
6. The leachate and landfill gas collection lift well for a pit fly ash landfill according to claim 5, wherein the steel reinforcement (12) is wrapped with HDPE layer.
7. The leachate and landfill gas collection lift well for pit fly ash landfill according to claim 4, characterized in that a civil grid (13) is provided at the height position of the junction of perforated pipe (1) and extended perforated pipe (10).
8. The percolate and landfill gas collecting and lifting well for the pit-type fly ash landfill according to claim 1, wherein a lead wire mesh cage (14) is arranged on the outer side of the perforated pipe (1), broken stone (15) is filled between the lead wire mesh cage (14) and the perforated pipe (1), and a polypropylene geotechnical filter screen (16) is arranged at the bottom of the lifting well.
9. The leachate and landfill gas collection lift well for pit fly ash landfill according to claim 8, wherein the particle size of the crushed stone (15) is 40-60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322068358.5U CN220658715U (en) | 2023-08-02 | 2023-08-02 | Percolate and landfill gas collecting and lifting well for pit type fly ash landfill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322068358.5U CN220658715U (en) | 2023-08-02 | 2023-08-02 | Percolate and landfill gas collecting and lifting well for pit type fly ash landfill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220658715U true CN220658715U (en) | 2024-03-26 |
Family
ID=90336685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322068358.5U Active CN220658715U (en) | 2023-08-02 | 2023-08-02 | Percolate and landfill gas collecting and lifting well for pit type fly ash landfill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220658715U (en) |
-
2023
- 2023-08-02 CN CN202322068358.5U patent/CN220658715U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |