CN212318968U

CN212318968U - Rigid landfill gas guiding-liquid discharging integrated device

Info

Publication number: CN212318968U
Application number: CN202022115710.2U
Authority: CN
Inventors: 费孔娟; 张东; 韩军平; 巩琳婕; 康为清
Original assignee: China Qiyuan Engineering Design Research Institute Co ltd
Current assignee: China Qiyuan Engineering Design Research Institute Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-01-08
Anticipated expiration: 2030-09-24

Abstract

The utility model provides a rigidity landfill gas guide-flowing back integrated device, including drainage guide pipe and drain, drainage guide pipe's side is connected with a downward return bend of export, and drain's one end is connected with outside drainage guide pump, and when detecting infiltration filtrating highly surpasss the threshold value in the filtration liquid sump pit, transfers drain's the other end to drainage guide pipe and leads the row. The utility model discloses can also lead automatically when leading row's filtration liquid and arrange landfill gas.

Description

Rigid landfill gas guiding-liquid discharging integrated device

Technical Field

The utility model relates to a hazardous waste handles and technical field, especially relates to rigidity landfill gas guide-flowing back integrated device.

Background

In the dangerous waste rigid landfill technology, leachate and gas generated in a landfill unit are generated, and a drainage guide pipeline system is installed at the bottom of the landfill unit in the conventional drainage guide technology. The leachate that produces simultaneously can lead to the fact serious corruption to drainage guide pipe way and valve, and the corruption can lead to revealing of pipeline and valve, reveals the environmental pollution that the risk all can arouse soil, water etc. above.

SUMMERY OF THE UTILITY MODEL

The application provides a rigid landfill gas guide-liquid discharge integrated device, which solves the problem that the leakage probability of infiltration filtrate in the existing landfill unit is high and simultaneously takes account of the guide and discharge of landfill gas.

The gas guide-liquid discharge integrated device for the rigid landfill comprises

The guide and exhaust pipe is arranged at a position close to the side wall of the landfill unit, the guide and exhaust pipe sequentially penetrates through a field sealing unit and a landfill material layer in the landfill unit from top to bottom and then is fixed at the bottom of the percolate water collecting well, a plurality of pore channels are uniformly formed in the pipe wall of the guide and exhaust pipe positioned on the lower side of a top plate of the field sealing unit, and the side end of the guide and exhaust pipe positioned on the upper side of the field sealing unit is connected with a bent pipe with a downward outlet;

one end of the liquid drainage device is connected with an external drainage guide pump;

and when the fact that the height of the percolate in the percolate collecting well exceeds a threshold value is detected, the other end of the drainage device is placed to a drainage guide pipe to conduct drainage.

The utility model discloses can reduce the landfill unit internal infiltration filtrating and reveal probability and to the environmental pollution risk, can also lead automatically when leading row's filtration liquid and arrange the landfill gas, reduce engineering cost.

It is preferable that: the top of the guide and exhaust pipe is connected with a reducing tee, the top 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, so that automatic guide and exhaust of landfill gas is realized.

It is preferable that: the pipe diameter of the side end of the reducing tee is smaller than the pipe diameters of the other two ends, so that landfill gas can be conveniently discharged.

It is preferable that: the elevation of reducing tee bend is less than parapet crown height, the bent pipe is apart from the distance of closing unit roof face is not less than 30cm, the drainage of landfill gas of being convenient for.

It is preferable that: the drainage guide pipe is located the position department cover of seal unit roof is equipped with waterproof casing, the upper end of drainage guide pipe is fixed through the support, the support includes that connecting pipe, cover are established at the outside clamp of drainage guide pipe and predetermine the built-in fitting of landfill unit lateral wall, the one end of clamp is passed through the connecting pipe and is fixed on the built-in fitting, adopt above-mentioned structure can fix the drainage guide pipe in the position that is close to the lateral wall of landfill unit.

It is preferable that: the guide and exhaust pipe is an HDPE pipe which has good chemical corrosion resistance and wear resistance.

It is preferable that: the seepage-proof layer is laid in the percolate water collecting well and comprises a geotechnical single-side composite drainage net, a pebble layer and a seepage-proof film, the bottom of the drainage guide pipe is fixed in the pebble layer, the pebble layer is used for fixing the drainage guide pipe, and the geotechnical single-side composite drainage net is used for reverse filtration.

It is preferable that: the drainage guide pump is a movable self-sucking pump and is used for timely guiding and discharging the percolate out of the landfill unit.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses compare filtration liquid lower part guide row, reduce landfill unit check bottom and open reservation hole and the dangerous waste filtration liquid leakage risk of pipe connection department.

2. The utility model discloses can also lead automatically when leading row's filtration liquid and arrange landfill gas, reduce engineering cost.

3. The utility model discloses a filtration liquid upper portion drainage guide reduces the whole height of the unit leak hunting room that visualizes of landfill, reduces fixed calandria and valve application by a wide margin.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a landfill unit of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a plan view of the leachate collecting well of the present invention;

FIG. 4 is a schematic structural view of the impermeable layer of the present invention;

fig. 5 is a schematic structural diagram of the bracket of the present invention.

Illustration of the drawings:

the system comprises a landfill unit 1, a field sealing unit 11, a landfill material layer 12, a percolate collecting well 13, an impermeable layer 131, a 1311 geotechnical single-sided composite drainage network, a pebble layer 1312, an impermeable membrane 1313, a drainage guide pipe 2, a pore passage 21, a bent pipe 3, a tee joint 4 with different diameters, a movable end cap 5, a waterproof sleeve 6, a support 7, a connecting pipe 71, a hoop 72 and an embedded part 73.

Detailed Description

Referring to fig. 1, a schematic structural view 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 collecting well 13 from top to bottom, and an impermeable layer 131 is laid inside the percolate collecting well 13. As shown in fig. 4, the impermeable layer 131 comprises a geotechnical single-sided composite drainage net 1311, a pebble layer 1312 and an impermeable membrane 1313, wherein the impermeable membrane 1313 is made of a whole piece of material and is not allowed to have a welding seam. The position department that is close to landfill unit 1 lateral wall sets up guide exhaust pipe 2, and guide exhaust pipe 2 chooses for use chemical resistance nature and the good HDPE pipe of wearability, adopts the upper portion guide exhaust, reduces landfill unit 1 and looks at the overall height of leak hunting room, can also reduce fixed calandria and valve application by a wide margin.

Referring to fig. 2-5, the rigid landfill gas guiding-liquid discharging integrated device comprises a guide and discharge pipe 2 and a liquid discharging device.

The guide exhaust pipe 2 sequentially penetrates through the field closing unit 11 and the landfill material layer 12 from top to bottom and then extends into the leachate collecting well 13, the bottom of the guide exhaust pipe 2 is fixed through a pebble layer 1312, and the bottom of the pipe is used as a punching blind plate. As shown in fig. 5, the upper end of the pipe guide 2 is fixed by a bracket 7, the bracket 7 includes a connecting pipe 71, a hoop 72 sleeved outside the pipe guide 2, and an embedded part 73 preset on the sidewall of the landfill unit 1, one end of the hoop 72 is fixed on the embedded part 73 by the connecting pipe 71, and when the embedded part 73 is located at the top of the partition wall and penetrates the impermeable material of the top of the wall, the periphery of the perforated part of the impermeable material should be anchored by an expansion bolt pressing pad to avoid leakage. As shown in figure 2, the drainage guide pipe 2 is sleeved with a waterproof sleeve 6 at the position of the top plate of the seal unit 11, and a trumpet-shaped sealing sleeve is arranged at the position of an impermeable membrane penetrating through the seal unit 11.

The top end of the guide and exhaust 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 keeping off rain, the side end of the reducing tee is connected with a bent pipe 3, the pipe diameter of the side end of the reducing tee 4 is smaller than those of the other two ends, the elevation of the reducing tee 4 is lower than the top height of a parapet, the distance between the bent pipe 3 and the top plate surface of the field sealing unit 11 is not smaller than 30cm, and the guide and exhaust of landfill gas are facilitated; the pipe wall of the guide and exhaust pipe 2, which is positioned at the lower side of the top plate of the closing unit 11, is uniformly provided with a plurality of pore canals 21, and the landfill gas and the percolate enter the guide and exhaust pipe 2 through the pore canals 21.

Drain's one end is connected with outside drainage guide pump, and drainage guide pump is portable self priming pump, detects 13 wells of filtration liquid through the level gauge, detects the height of filtration liquid, transfers drain's the other end to and leads in drainage guide 2, and drain is for absorbing water the pipe.

Example 2: the method for guiding and discharging gas and liquid in the rigid landfill comprises

The landfill waste gas adopts a guide exhaust pipe 2 and a bent pipe 3 at the side end of the guide exhaust pipe 2 to realize automatic guide and exhaust, and the percolate guide and exhaust adopts a mode of combining the guide exhaust pipe 2, a drainage device and an external guide and exhaust pump to guide and exhaust;

wherein, the outlet of the elbow 3 is downward, and a plurality of pore canals 21 are uniformly arranged on the pipe wall of the guide and exhaust pipe 2 positioned at the lower side of the top plate of the seal unit 11.

The specific implementation steps are as follows:

the method comprises the following steps: opening the reducing tee 4 at the lower part of the movable end cap, lowering the portable liquid level meter, and detecting whether the percolate collecting well generates percolate and detects the liquid level condition;

step two: if it produces and reaches certain liquid level to detect there is the filtration liquid, transfers drain, and portable filtration liquid drainage pump is led to the other end of drain, leads out the landfill unit with the filtration liquid that produces in the filtration liquid collecting well. The small-caliber side end of the reducing tee joint 4 is connected with a bent pipe 3 with the corresponding caliber, the bent pipe 2 is bent downwards, and landfill gas generated in the landfill unit 1 is guided and discharged.

The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.

Claims

1. The gas guide-liquid discharge integrated device for the rigid landfill site is characterized by comprising

The drainage guide pipe (2) is arranged at a position close to the side wall of the landfill unit (1), the drainage guide pipe (2) sequentially penetrates through a field sealing unit (11) and a landfill material layer (12) in the landfill unit (1) from top to bottom and then is fixed at the bottom of a percolate water collecting well (13), a plurality of pore channels (21) are uniformly formed in the pipe wall of the drainage guide pipe (2) positioned on the lower side of the top plate of the field sealing unit (11), and the side end of the drainage guide pipe (2) positioned on the upper side of the field sealing unit (11) is connected with a bent pipe (3) with a downward outlet;

when the fact that the height of the percolate in the percolate collecting well (13) exceeds a threshold value is detected, the other end of the drainage device is placed into the drainage guide pipe (2) to conduct drainage.

2. The rigid landfill gas guiding-liquid discharging integrated device according to claim 1, wherein a reducing tee (4) is connected to the top end of the pipe guiding and discharging pipe (2), a movable end cap (5) is detachably connected to the top end of the reducing tee (4), and the side end of the reducing tee (4) is connected with the elbow (3).

3. The rigid landfill gas guide-liquid discharge integrated device of claim 2, wherein the pipe diameter of the side end of the reducing tee (4) is smaller than that of the other two ends.

4. The rigid landfill gas guide-liquid discharge integrated device according to claim 2, wherein the height level of the reducing tee (4) is lower than the top height of the parapet wall, and the distance between the elbow (3) and the top plate surface of the sealing unit (11) is not less than 30 cm.

5. The rigid landfill air guide-drainage integrated device of claim 1, wherein the drainage guide pipe (2) is sleeved with a waterproof sleeve (6) at a position of a top plate of the sealing unit (11), the upper end of the drainage guide pipe (2) is fixed through a support (7), the support (7) comprises a connecting pipe (71), a hoop (72) sleeved outside the drainage guide pipe (2) and an embedded part (73) preset on the side wall of the landfill unit (1), and one end of the hoop (72) is fixed on the embedded part (73) through the connecting pipe (71).

6. Rigid landfill gas guide-drain integrated device according to claim 2, characterized in that the guide-drain pipe (2) is a HDPE pipe.

7. The rigid landfill gas guiding-liquid discharging integrated device according to claim 1, wherein an impermeable layer (131) is laid inside 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), and the bottom of the drainage guide pipe (2) is fixed in the pebble layer (1312).

8. The rigid landfill gas guide-drainage integrated device of claim 1, wherein the drainage pump is a mobile self-priming pump.