CN112066083B - Integrated gas-guiding and liquid-draining device and method for rigid landfill - Google Patents
Integrated gas-guiding and liquid-draining device and method for rigid landfill Download PDFInfo
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- CN112066083B CN112066083B CN202011012493.2A CN202011012493A CN112066083B CN 112066083 B CN112066083 B CN 112066083B CN 202011012493 A CN202011012493 A CN 202011012493A CN 112066083 B CN112066083 B CN 112066083B
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- pipe
- landfill
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- drainage
- percolate
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
- F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides an air guide-liquid discharge integrated device and method for a rigid landfill, comprising a guide pipe and a liquid discharge device, wherein the side end of the guide pipe is connected with a bent pipe with a downward outlet, one end of the liquid discharge device is connected with an external guide pump, and when the height of percolate in a percolate collecting well is detected to exceed a threshold value, the other end of the liquid discharge device is lowered to the guide pipe for guide and discharge. The invention can automatically guide and discharge landfill gas while guiding and discharging percolate.
Description
Technical Field
The invention relates to the technical field of hazardous waste treatment, in particular to an air-liquid guiding and discharging integrated device and method for a rigid landfill.
Background
In the technology of rigid landfill of dangerous waste, leachate and gas which can be generated in a landfill unit, a drainage pipeline system is arranged at the bottom of the landfill unit in the conventional drainage technology, and the defect is that a designed leakage point exists at the bottom of the landfill unit. Meanwhile, the generated percolate can cause serious corrosion to the guide and discharge pipeline and the valve, the corrosion can cause leakage of the pipeline and the valve, and the leakage risks can cause environmental pollution of soil, water and the like.
Disclosure of Invention
The application provides a gas guide-liquid discharge integrated device and method for a rigid landfill, which solve the problem of high leakage probability of percolate in the existing landfill unit and simultaneously consider the gas guide and discharge of landfill.
The air-liquid guiding and draining integrated device for rigid landfill includes
The guide and discharge pipes are arranged at positions close to the side walls of the landfill units, sequentially penetrate through the field sealing units and the landfill material layers in the landfill units from top to bottom and then are fixed at the bottom of the percolate collecting well, a plurality of pore canals are uniformly formed in the pipe walls of the guide and discharge pipes positioned at the lower side of the top plate of the field sealing units, and a bent pipe with a downward outlet is connected to the side ends of the guide and discharge pipes positioned at the upper side of the field sealing units;
One end of the liquid draining device is connected with an external drainage guide pump;
when the height of the percolate in the percolate collecting well exceeds a threshold value, the other end of the liquid draining device is lowered to the guide and discharge pipe for guide and discharge.
The invention can reduce the leakage probability of percolate in the landfill unit and the risk of environmental pollution, and can automatically guide and discharge landfill gas while guiding and discharging the percolate, thereby reducing engineering cost.
Preferably, the top end of the guide and discharge pipe is connected with a reducing tee, the top end of the reducing tee is detachably connected with a movable end cap, and the side end of the reducing tee is connected with the bent pipe to realize automatic guide and discharge of landfill gas.
Preferably, the pipe diameter of the side end of the reducing tee is smaller than that of the other two ends, so that the landfill gas can be conveniently discharged.
Preferably, the elevation of the reducing tee is lower than the parapet wall jacking height, and the distance between the bent pipe and the top plate surface of the sealing unit is not less than 30cm, so that the gas is conveniently led and discharged.
Preferably, the waterproof sleeve is sleeved on the position of the top plate of the sealing unit, the upper end of the guide pipe is fixed through the bracket, the bracket comprises a connecting pipe, a clamp sleeved outside the guide pipe and an embedded part preset on the side wall of the landfill unit, one end of the clamp is fixed on the embedded part through the connecting pipe, and the guide pipe can be fixed at a position close to the side wall of the landfill unit by adopting the structure.
Preferably, the guide and discharge pipe is an HDPE pipe, and the HDPE pipe has good chemical corrosion resistance and wear resistance.
Preferably, an impermeable layer is paved in the percolate water collecting well and comprises a geotechnical single-sided composite drainage net, a pebble layer and an impermeable membrane, the bottom of the guide and discharge pipe is fixed in the pebble layer, the pebble layer is used for fixing the guide and discharge pipe, and the geotechnical single-sided composite drainage net is used for reverse filtration.
Preferably, the drainage pump is a movable self-priming pump and is used for timely guiding and draining the percolate out of the landfill unit.
The air-liquid guiding and draining method for the rigid landfill includes the following steps:
the landfill waste gas adopts a guide pipe and an elbow pipe at the side end of the guide pipe to realize automatic guide and discharge, and the percolate guide and discharge adopts a mode of combining the guide pipe, a liquid discharge device and an external liquid discharge pump;
the outlet of the bent pipe is downward, and a plurality of pore canals are uniformly formed in the pipe wall of the guide and discharge pipe which is positioned at the lower side of the top plate of the sealing unit. By adopting the method, landfill gas is automatically guided and discharged while the percolate is guided and discharged.
Compared with the prior art, the invention has the following beneficial effects:
1. Compared with the lower drainage of the percolate, the drainage device reduces the risk of leakage of dangerous waste percolate at the reserved holes and the pipeline joints at the bottoms of the landfill unit cells.
2. The invention can automatically guide and discharge landfill gas while guiding and discharging percolate, thereby reducing engineering cost.
3. The invention adopts the upper guide and drainage of the percolate, reduces the overall height of the visual leakage detection chamber of the landfill unit, and greatly reduces the application of fixed calandria and valves.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of a landfill unit according to the present invention;
FIG. 2 is a schematic diagram of the overall structure of the present invention;
FIG. 3 is a plan view of a percolate collection well of the present invention;
FIG. 4 is a schematic view of the structure of the barrier layer of the present invention;
fig. 5 is a schematic structural view of the stent of the present invention.
Illustration of:
The device comprises a1 landfill unit, a 11 field sealing unit, a12 landfill material layer, a 13 percolate water collecting well, a 131 impermeable layer, a 1311 geotechnical single-sided composite drainage net, a 1312 pebble layer, a 1313 impermeable film, a2 guide and discharge pipe, a 21 pore canal, a 3 bent pipe, a4 reducing tee, a 5 movable end cap, a6 waterproof sleeve, a 7 support, a 71 connecting pipe, a 72 clamp and a 73 embedded part.
Detailed Description
Referring to fig. 1, a schematic structure of a landfill unit 1 is shown. The landfill unit 1 sequentially comprises a field sealing unit 11, a landfill material layer 12 and a percolate water collecting well 13 from top to bottom, and an impermeable layer 131 is paved in the percolate water collecting well 13. The impermeable layer 131 as shown in fig. 4 includes a geotechnical single-sided composite drainage net 1311, pebble layer 1312, and impermeable membrane 1313, and the impermeable membrane 1313 is made of a single piece material, and no weld is allowed. The guide and discharge pipe 2 is arranged at a position close to the side wall of the landfill unit 1, the guide and discharge pipe 2 is an HDPE pipe with good chemical corrosion resistance and wear resistance, and the upper guide and discharge pipe is adopted, so that the overall height of the visual leakage detection chamber of the landfill unit 1 is reduced, and the application of fixed discharge pipes and valves can be greatly reduced.
Referring to fig. 2-5, the air-liquid guiding and discharging integrated device for the rigid landfill comprises an air guiding and discharging pipe 2 and a liquid discharging device.
The guide and discharge pipe 2 sequentially passes through the sealing unit 11 and the landfill material layer 12 from top to bottom and then extends to the inside of the percolate collecting well 13, the bottom of the guide and discharge pipe 2 is fixed through the pebble layer 1312, and the bottom of the guide and discharge pipe is used as a punching blind plate. As shown in fig. 5, the upper end of the guide and discharge pipe 2 is fixed by a bracket 7, the bracket 7 comprises a connecting pipe 71, a clamp 72 sleeved outside the guide and discharge pipe 2 and an embedded part 73 preset on the side wall of the landfill unit 1, one end of the clamp 72 is fixed on the embedded part 73 by the connecting pipe 71, and when the embedded part 73 is positioned at the top of a partition wall and penetrates through the wall top anti-seepage material, expansion bolt pressing gaskets are used for anchoring around the perforated part of the anti-seepage material to avoid seepage. As shown in fig. 2, the guide and discharge pipe 2 is sleeved with a waterproof sleeve 6 at the position of the top plate of the sealing unit 11, and the position of the impermeable membrane of the sealing unit 11 is used as a horn-shaped sealing sleeve.
The top end of the guide and discharge pipe 2 is connected with a reducing tee 4, the top end of the reducing tee 4 is detachably connected with a movable end cap 5 for shielding rain, the side end of the reducing tee 4 is connected with a bent pipe 3, the pipe diameter of the side end of the reducing tee 4 is smaller than that of the other two ends, the elevation of the reducing tee 4 is lower than the height of a parapet wall, the distance between the bent pipe 3 and the top plate surface of the sealing unit 11 is not smaller than 30cm, the guide and discharge pipe 2 is convenient for guiding and discharging landfill gas, a plurality of pore channels 21 are uniformly formed in the pipe wall of the lower side of the top plate of the sealing unit 11, and the landfill gas and percolate enter the guide and discharge pipe 2 through the pore channels 21.
One end of the liquid draining device is connected with an external drainage pump, the drainage pump is a mobile self-sucking pump, a percolate 13 well is detected through a liquid level meter, the height of the percolate is detected, the other end of the liquid draining device is lowered into the drainage pipe 2 for drainage, and the liquid draining device is a water sucking pipe.
Example 2 method of conducting air-liquid drainage in a rigid landfill comprising
The landfill waste gas is automatically guided and discharged by adopting a guide and discharge pipe 2 and a bent pipe 3 at the side end of the guide and discharge pipe 2, and percolate is guided and discharged by adopting a mode of combining the guide and discharge pipe 2, a liquid discharging device and an external guide and discharge pump;
wherein, the outlet of the elbow pipe 3 is downward, and a plurality of pore canals 21 are uniformly arranged on the pipe wall of the guide and discharge pipe 2 positioned at the lower side of the top plate of the sealing unit 11.
The specific implementation steps are as follows:
Step one, opening a reducing tee 4 at the lower part of the movable end cap, lowering a portable liquid level meter, and detecting whether the percolate collecting well has percolate generation and liquid level conditions;
And secondly, if the generation of percolate is detected and reaches a certain liquid level, a liquid discharging device is lowered, the other end of the liquid discharging device is connected with a movable percolate guide and discharge pump, and percolate generated in a percolate collecting well is guided and discharged out of a landfill unit. The small-caliber side end of the reducing tee 4 is connected with a bent pipe 3 with the corresponding pipe diameter, the bent pipe 2 is bent downwards, and landfill gas generated in the landfill unit 1 is guided and discharged.
The above-provided detailed description is merely a few examples under the general inventive concept and does not limit the scope of the present application. Any other embodiments which are extended according to the solution of the application without inventive effort fall within the scope of protection of the application for a person skilled in the art.
Claims (4)
1. The utility model provides a rigidity landfill gas-drain integration device which characterized in that includes:
The drainage pipe (2) is arranged at a position close to the side wall of the landfill unit (1), the drainage pipe (2) sequentially passes through the field sealing unit (11) and the landfill material layer (12) in the landfill unit (1) from top to bottom and then is fixed at the bottom of the percolate collecting well (13), a plurality of pore channels (21) are uniformly formed in the pipe wall of the drainage pipe (2) positioned at the lower side of the top plate of the field sealing unit (11), and a bent pipe (3) with a downward outlet is connected to the side end of the drainage pipe (2) positioned at the upper side of the field sealing unit (11);
One end of the liquid draining device is connected with an external drainage guide pump;
When the height of the percolate in the percolate water collecting well (13) exceeds a threshold value, the other end of the liquid discharging device is lowered into the pebble layer (1312) to conduct and discharge, an impermeable layer (131) is paved in the percolate water collecting well (13), the impermeable layer (131) comprises a geotechnical single-sided composite drainage net (1311), a pebble layer (1312) and an impermeable membrane (1313), the impermeable membrane (1313) is made of a whole sheet material and is not allowed to have welding seams, the bottom of the pebble layer (1312) is fixed at the bottom of the liquid discharging device, and the bottom of the pebble layer (2) is fixed through the pebble layer (1312);
The waterproof sealing sleeve is sleeved on the position of the top plate of the sealing unit (11), a horn-shaped sealing sleeve is arranged at the position penetrating through the impermeable membrane of the sealing unit (11), the upper end of the guide and discharge pipe (2) is fixed through a support (7), the support (7) comprises a connecting pipe (71), a clamp (72) sleeved outside the guide and discharge pipe (2) and an embedded part (73) preset on the side wall of the landfill unit (1), one end of the clamp (72) is fixed on the embedded part (73) through the connecting pipe (71), and when the embedded part (73) is positioned at the top of the partition wall and penetrates through the impermeable material of the wall top, expansion bolt pressing gaskets are anchored around the perforated part of the impermeable material;
The utility model discloses a bridge is characterized by comprising a field sealing unit (11), a bent pipe (3) and a reducing tee (4) connected with the top of the conduit (2), wherein the top of the reducing tee (4) is detachably connected with a movable end cap (5), the side end of the reducing tee (4) is connected with the bent pipe (3), the elevation of the reducing tee (4) is lower than the parapet wall jacking height, and the distance between the bent pipe (3) and the top surface of the field sealing unit (11) is not less than 30cm.
2. The integrated air-liquid guiding and draining device for the rigid landfill according to claim 1, wherein the pipe diameter of the side end of the reducing tee (4) is smaller than that of the other two ends.
3. The integrated air and liquid drainage device for a rigid landfill according to claim 1, wherein the drainage pipe (2) is an HDPE pipe.
4. The integrated air and liquid drainage device of the rigid landfill according to claim 1, wherein the drainage pump is a mobile self-priming pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011012493.2A CN112066083B (en) | 2020-09-24 | 2020-09-24 | Integrated gas-guiding and liquid-draining device and method for rigid landfill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011012493.2A CN112066083B (en) | 2020-09-24 | 2020-09-24 | Integrated gas-guiding and liquid-draining device and method for rigid landfill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112066083A CN112066083A (en) | 2020-12-11 |
| CN112066083B true CN112066083B (en) | 2025-05-27 |
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| CN202011012493.2A Active CN112066083B (en) | 2020-09-24 | 2020-09-24 | Integrated gas-guiding and liquid-draining device and method for rigid landfill |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115354726A (en) * | 2022-08-24 | 2022-11-18 | 江苏省环境工程技术有限公司 | Rigid landfill waste gas collection-leachate guide and discharge integrated device and method |
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