CN216007052U

CN216007052U - Rigid refuse landfill

Info

Publication number: CN216007052U
Application number: CN202120207224.5U
Authority: CN
Inventors: 耿海榕
Original assignee: Shanghai Hehui Ecological Environmental Technology Co ltd
Current assignee: Zhejiang Hehui Ecological Environment Technology Co ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2022-03-11
Anticipated expiration: 2031-01-25

Abstract

The utility model discloses a rigid refuse landfill, and belongs to the technical field of environmental protection. Including landfill reservoir area, landfill reservoir area comprises a plurality of landfill units, the bottom of landfill unit is equipped with the sump pit, be provided with the ladder groove in the sump pit, the bottom that all is equipped with the reservoir area cell body in each sump pit is equipped with the submerged dirty pump of filtration liquid, be equipped with the glass apron on the sump pit, the bottom of landfill reservoir area is equipped with solid-walled pipe and drainage pipe system, drainage pipe system includes pre-buried pipe, waterproof cover and waste liquid collecting pipe, the upper end of pre-buried pipe and the border and the HDPE geomembrane welding of pre-buried pipe intercommunication and solid-walled pipe, the bottom and the waste liquid collecting pipe intercommunication of pre-buried pipe, the top of sump pit is access to the one end of waste liquid collecting pipe, the bottom of reservoir area cell body still is equipped with a plurality of pipeline brackets that are used for fixed waste liquid collecting pipe. By providing the rigid refuse landfill, the problems that accumulated water in the refuse landfill unit and the refuse are accumulated for a long time to generate harmful gas to pollute the environment and harm the human health are avoided.

Description

Rigid refuse landfill

Technical Field

The utility model relates to a rigid refuse landfill, and belongs to the technical field of environmental protection.

Background

At present, the garbage disposal mainly comprises modes of garbage landfill, garbage incineration and the like, the garbage incineration investment is large, the technical requirement is high, toxic and harmful gases generated in the disposal process are difficult to dispose, and secondary pollution is easy to form, so about 85 percent of municipal domestic garbage is subjected to landfill disposal. After the domestic garbage landfill is completed, the landfill site is sealed, so that the domestic garbage landfill forms an independent system, the domestic garbage is prevented from seeping into underground polluted underground water and rainwater is prevented from entering the garbage landfill to increase the treatment capacity of percolate, and the environment is prevented from being polluted by waste water and waste gas of the domestic garbage landfill.

In the prior art, a chinese patent with an authorization publication number of CN212153470U describes a sealing system for a domestic refuse landfill, which includes a compacted soil impermeable layer, a HDPE film layer, a geotextile layer and an ecological bag sealing vegetation layer laid on the surface of the refuse landfill in sequence from bottom to top. The utility model also provides a household garbage landfill, which comprises a bottom seepage-proofing system, a side seepage-proofing system and the household garbage landfill closing system. According to the utility model, the geotextile layer is laid on the HDPE film layer, the HDPE film layer can be prevented from being broken due to the geotextile, surface water is not easy to enter the garbage buried layer, and the anti-seepage effect is better. The utility model lays an ecological field-sealing vegetable layer on the surface of the geotextile layer. The household garbage landfill closing system is simple in structure and small in occupied space, and can increase the effective landfill capacity of a garbage landfill.

Similar refuse landfill sites are common in the market at present, but water accumulation easily occurs in the refuse landfill sites, so that the refuse is decomposed to generate harmful gas, and the refuse landfill sites are not beneficial to human health.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the rigid refuse landfill solves the problem that in the prior art, accumulated water in the refuse landfill is not discharged timely enough, so that harmful gas generated by refuse decomposition is easy.

The technical problem to be solved by the utility model is realized by adopting the following technical scheme:

a rigid landfill for garbage comprises a landfill area, wherein the landfill area is composed of a plurality of landfill units, and each landfill unit is composed of a reservoir area pool body and an artificial lining layer;

a concrete pool is arranged in the pool body of the reservoir area, the concrete pool comprises concrete walls and a concrete bottom plate, the concrete walls are vertically arranged on the upper surface of the concrete bottom plate, the reinforced concrete walls divide the rigid landfill site into a plurality of landfill areas, gaps are reserved between the reinforced concrete walls of the adjacent landfill areas, and the reinforced concrete walls divide the landfill areas into a plurality of landfill units;

the artificial lining comprises an impermeable layer, a protective layer, a guide and drainage layer and a pebble layer, wherein the impermeable layer comprises an HDPE geomembrane, the protective layer comprises filament non-woven geotextile, and the guide and drainage layer comprises a geotechnical composite drainage network;

a concrete layer is arranged below the geotechnical composite drainage network on the surface of the landfill unit;

the bottom of the landfill unit is provided with a water collecting pit, a stepped groove is arranged in the water collecting pit, the bottom of each water collecting pit, which is internally provided with a reservoir area pool body, is provided with a percolate submersible sewage pump, a glass cover plate is arranged on the water collecting pit, the bottom of the landfill area is provided with a solid-wall pipe and a drainage pipeline system, the drainage pipeline system comprises a pre-buried pipe, a waterproof sleeve and a waste liquid collecting pipe, the upper end of the pre-buried pipe is communicated with the solid-wall pipe, the edge of the pre-buried pipe is welded with a high-density polyethylene (HDPE) geomembrane, the bottom of the pre-buried pipe is communicated with the waste liquid collecting pipe, one end of the waste liquid collecting pipe is communicated to the upper part of the water collecting pit, the other end of the waste liquid collecting pipe is provided with a brick pipe pier for installing the waste liquid collecting pipe, and the bottom of the reservoir area pool body is also provided with a plurality of pipeline brackets for fixing the waste liquid collecting pipe;

an accident pool and an initial rainwater pool are arranged on the landfill reservoir area, an accident pool submersible sewage pump is arranged in the accident pool, an initial rainwater pool submersible sewage pump is arranged in the initial rainwater pool, and a rainwater pipe network is arranged at the same end of the accident pool and the initial rainwater pool;

and two ends of the landfill area are respectively provided with a public unloading lifting channel.

As a preferred example, the reservoir tank is a steel concrete tank.

As a preferred example, the barrier layer has a thickness of 2 mm.

As a preferred example, the waste liquid collecting pipe is arranged in a manner of inclining from the end far away from the collecting pit to the end close to the collecting pit.

As a preferred example, a rain shed is arranged on the landfill reservoir area.

As a preferred example, the canopy includes a ceiling, a middle pillar, side pillars, and side walls, the ceiling being a double pitched ceiling.

As a preferred example, the slope of the ceiling is between 3 ° and 5 °.

As a preferred example, the side sheds are arranged on the side struts on two sides, and the side sheds are single-slope side sheds.

As a preferred example, the side sheds are three-ply.

As a preferred example, the slope of the side sheds is between 30-45 deg..

The utility model has the beneficial effects that:

1. the water collecting area is arranged in the refuse landfill area, accumulated water in each landfill unit can be discharged out of the landfill unit through the solid-wall pipe at the bottom and the drainage pipeline system in time, and meanwhile, a percolate submersible sewage pump is arranged inside each landfill unit and can pump out the accumulated water from the water collecting pit, so that the situation that the accumulated water in the refuse landfill unit and refuse accumulate for a long time to generate harmful gas to pollute the environment and harm the health of human bodies is avoided.

2. Categorised the back can realize the categorised landfill of discarded object to be provided with the clearance between the landfill reservoir area, make every landfill reservoir area become independent landfill unit, constitute extensive landfill yard by a plurality of units, avoided because the unstable condition that causes the leachate of bottom plate fracture or flexible artifical lining damage and make the landfill yard of geology to reveal.

3. The side canopy of multilayer list slope formula structure is installed along vertical direction on the side pillar of two slope formula structure ceiling both sides, makes the side that shelters from the canopy stop the rainwater, and rain-proof effect is better, reduces the influence of rainwater to the landfill operation, in addition, has still guaranteed that the landfill has certain air permeability.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a sump configuration;

FIG. 3 is a schematic view of the waste liquid collecting tube;

FIG. 4 is a schematic structural view of a leachate submersible sewage pump;

FIG. 5 is a schematic structural diagram of a brick pipe pier;

FIG. 6 is a schematic structural view of an accident pool and an initial rain pool;

FIG. 7 is a schematic structural view of a common discharge lifting channel;

fig. 8 is a schematic structural view of the canopy.

In the figure: 1. burying a reservoir area; 2. a canopy; 3. a concrete pool; 4. an impermeable layer; 5. a protective layer; 6. a guide and discharge layer; 7. a sump; 8. a leachate submersible sewage pump; 9. a glass cover plate; 10. a solid wall pipe; 11. pre-burying a pipe; 12. a waterproof jacket; 13. bricking pipe piers; 14. a conduit bracket; 15. an accident pool; 16. an initial rain pool; 17. A common discharge lifting channel; 18. a waste liquid collecting pipe; 19. a ceiling; 20. a middle strut; 21. a side pillar; 22. side sheds; 23. a pebble layer.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the utility model easy to understand, the utility model is further described with reference to the specific drawings.

As shown in fig. 1-8, a rigid landfill site for garbage comprises a landfill area 1, wherein the landfill area 1 is composed of a plurality of landfill units, each landfill unit is composed of a reservoir body and an artificial lining, and a rain shed 2 is arranged on the landfill area 1. Adopt the overground type rigid structure of reinforced concrete shell and the combination of flexible artifical lining to set up canopy 2, the rainy day is not worked, avoids the rainwater greatly to get into landfill reservoir area 1.

The canopy 2 includes a ceiling 19, a middle post 20, side posts 21, and side sheds 22. The ceiling 19 is a double-slope ceiling, and the slope of the ceiling 19 is between 3 and 5 degrees. The side sheds 22 are arranged on the side struts 21 at two sides, the side sheds 22 are single-slope type side sheds, the side sheds 22 are preferably three-layer, and the slope of the side sheds 22 is 30-45 degrees.

The inside of reservoir district cell body is equipped with concrete pond 3, and concrete pond 3 includes concrete wall and concrete bottom plate, and the concrete wall sets up the upper surface at concrete bottom plate perpendicularly, and the reinforced concrete wall divides the rigidity landfill yard into a plurality of landfill storehouse district 1, leaves the clearance between the reinforced concrete wall of adjacent landfill storehouse district 1, and the reinforced concrete wall divides landfill storehouse district 1 into a plurality of landfill units.

The artificial lining layer comprises an impermeable layer 4, a protective layer 5, a guide and drainage layer 6 and a pebble layer 23, wherein the impermeable layer 4 comprises an HDPE geomembrane, the protective layer 5 comprises filament non-woven geotextile, the guide and drainage layer 6 comprises a geotechnical composite drainage network, and the pebble layer 23 is composed of a plurality of cobblestones.

And a concrete layer is arranged below the soil engineering composite drainage net on the surface of the landfill unit.

The reservoir area cell body is the steel concrete cell body, and the inside of reservoir area cell body is equipped with concrete pool 3, and barrier 4 includes the HDPE geomembrane, and the thickness of HDPE barrier is 2 mm. The barrier performance tests of HDPE films against various organics show that as the thickness of the HDPE film increases, the contaminant diffusion capacity begins to decrease rapidly and then the decrease tends to be flat. When the thickness of the HDPE film is 1.0mm, the HDPE film is in a rapid decline period, and the permeability is relatively large; when the thickness of the HDPE film is 2.0mm, the permeability of various pollutants is basically in a gradual decline period, and the influence of increasing the thickness of the film on the permeability is little; when the HDPE film thickness is 1.5mm, part of the matter is already in a gentle descent period, but part of the matter is still in a rapid descent period, and some of the matter is still in an intermediate transition period.

The infiltration liquid amount is effectively reduced by optimizing the covering material, and the daily covering and middle covering material of the project are covered by the HDPE impervious film, so that the amount of rainwater infiltrating into the pile body is greatly reduced, and the yield of the infiltration liquid is reduced.

The protective layer 5 comprises filament non-woven geotextile, and the drainage guide layer 6 comprises a geotechnical composite drainage network.

The bottom of landfill unit is equipped with sump pit 7, is provided with the ladder groove in the sump pit 7, and the bottom that all is equipped with reservoir area cell body in each sump pit 7 is equipped with filtration liquid submersible sewage pump 8, is equipped with glass apron 9 on the sump pit 7.

The bottom of landfill storehouse district 1 is equipped with solid-wall pipe 10 and drainage pipe-line system, and drainage pipe-line system includes buried pipe 11, waterproof cover 12 and waste liquid collecting pipe 18 in advance, and waste liquid collecting pipe 18 sets up to the one end slope that is close to sump 7 from keeping away from sump 7.

The upper end of pre-buried pipe 11 and solid-wall pipe 10 intercommunication and the border and the HDPE geomembrane welding of pre-buried pipe 11, the bottom and the waste liquid collecting pipe 18 intercommunication of pre-buried pipe 11, the top of sump pit 7 is led to the one end of waste liquid collecting pipe, and the other end is equipped with the brick pipe mound 13 of installation waste liquid collecting pipe 18, and the bottom of reservoir district cell body still is equipped with a plurality of pipeline brackets 14 that are used for fixed waste liquid collecting pipe 18.

An accident pool 15 and an initial rainwater pool 16 are arranged on the landfill area 1, an accident pool submersible sewage pump is arranged in the accident pool 15, an initial rainwater pool submersible sewage pump is arranged in the initial rainwater pool 16, and a rainwater pipe network is arranged at the same end of the accident pool 15 and the initial rainwater pool 16.

Initial stage rainwater pond 16 is according to the standard design, can satisfy project initial stage rainwater and accomodate the demand, and initial stage rainwater pond 16 entries sets up the liquid level automatic control diverter valve, reaches the calculated amount when initial stage rainwater collection volume to when quality of water meets the requirements, diverter valve automatic switch-over to rainwater pipe network, later stage rainwater directly drains into rainwater pipe network. And two ends of the landfill reservoir area 1 are respectively provided with a public unloading lifting channel 17.

The working principle is as follows:

1) numbering the landfill and the landfill materials and filling the landfill records

The properties of the landfill wastes in the reservoir area of the safe landfill site are different, and in order to track the landfill wastes, the positions of the landfill materials in the landfill reservoir need to be determined, and the reservoir area pool bodies of the landfill area are numbered and classified. The dangerous waste entering the reservoir area needs to fill in a landfill record, and the dangerous waste is recorded in an electronic file, and the number and the depth of the reservoir area reservoir body in the landfill reservoir and the landfill position in a landfill unit are noted.

2) Hazardous waste pretreatment and detection

After being pretreated, the hazardous waste is detected including leaching toxicity, and can be buried after meeting the entrance standard of a hazardous waste landfill.

3) Transportation in the field

The landfill materials are lifted by the temporary storage through the collecting and transporting vehicles through the public unloading lifting channel 17 and then transported to the top of the pool body storage in the storage area.

4) Unloading operation

And unloading and burying are carried out by adopting a driving operation mode, and meanwhile, a landfill unit reservoir area is provided with a forklift for transporting and stacking materials at the bottom of the reservoir. And selecting the corresponding pool body in the reservoir area to operate along with the change of the landfill operation and the variety of the landfill materials.

5) Initial landfill of reservoir bottom

When the pond bodies in each reservoir area are filled, the dangerous wastes paved on the anti-seepage system are transported to the reservoir area by a dump truck, the dangerous wastes are dispatched and transported by a traveling crane, and the dangerous wastes are carefully piled and filled at the bottom of the reservoir, and the thickness of the dangerous wastes is at least 0.5 m.

6) Filling and compacting

The piling, filling and compacting operation can be completed by a forklift, the paving adopts a plane piling method, the forklift pushes the unloaded wastes on the operation surface to a slope outside the operation surface, pushes the wastes in the depth direction, gradually pushes the wastes, and rolls the wastes back and forth for three times, and the track of the track rolled each time is covered by three quarters of the track last time until a new operation surface is formed. The working level is 2m in height and the working level for dumping the waste daily is sized so that the final height of the landfill on the day is close to the end of the daily operation.

7) Day cover and intermediate cover

At the end of daily work, and after completion of landfills, areas must be covered with artificial materials. Unless a complete canopy 2 is provided, landfill work is not suitable to be carried out in rainy days. Although the project is a rigid hazardous waste safety landfill site, the landfill reservoir area 1 is provided with a rain shed 2, in order to avoid the influence of drifting rain, daily coverage and intermediate coverage measures are still strictly adopted, and the landfill operation is not carried out in rainy days.

8) Landfill sealing field

When a single reservoir area pool body is filled, the reservoir area pool body needs to be sealed. The sealing field adopts a combination form of 1.5mm high-density polyethylene film and impervious concrete, the top elevation of the landfill body is 13.3m, and the top elevation of the sealing field structure layer is 13.6 m.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A rigid landfill for garbage comprises a landfill area (1) and is characterized in that the landfill area (1) is composed of a plurality of landfill units, and each landfill unit is composed of a reservoir area pool body and an artificial lining layer;

a concrete pool (3) is arranged in the pool body of the reservoir area, the concrete pool comprises concrete walls and a concrete bottom plate, the concrete walls are vertically arranged on the upper surface of the concrete bottom plate, the reinforced concrete walls divide the rigid landfill site into a plurality of landfill areas, gaps are reserved between the reinforced concrete walls of the adjacent landfill areas, and the reinforced concrete walls divide the landfill areas into a plurality of landfill units;

the artificial lining comprises an impermeable layer (4), a protective layer (5), a drainage guide layer (6) and a pebble layer (23), wherein the impermeable layer (4) comprises an HDPE geomembrane, the protective layer (5) comprises filament non-woven geotextile, and the drainage guide layer (6) comprises a geotechnical composite drainage network;

the bottom of the landfill unit is provided with a water collecting pit (7), a step groove is arranged in the water collecting pit (7), the bottom of each reservoir area pool body arranged in each water collecting pit (7) is provided with a percolate submersible sewage pump (8), the water collecting pit (7) is provided with a glass cover plate (9), the bottom of the landfill reservoir area (1) is provided with a solid wall pipe (10) and a drainage pipeline system, the drainage pipeline system comprises a pre-buried pipe (11), the device comprises a waterproof sleeve (12) and a waste liquid collecting pipe, wherein the upper end of a pre-buried pipe (11) is communicated with a solid-wall pipe (10), the edge of the pre-buried pipe (11) is welded with a high-density polyethylene (HDPE) geomembrane, the bottom of the pre-buried pipe (11) is communicated with the waste liquid collecting pipe, one end of the waste liquid collecting pipe is communicated to the upper part of a water collecting pit (7), a brick-built pipe pier (13) for installing the waste liquid collecting pipe is arranged at the other end of the waste liquid collecting pipe, and a plurality of pipeline brackets (14) for fixing the waste liquid collecting pipe are further arranged at the bottom of a pool body in a pool area;

an accident pool (15) and an initial rainwater pool (16) are arranged on the landfill reservoir area (1), an accident pool submersible sewage pump is arranged in the accident pool (15), an initial rainwater pool submersible sewage pump is arranged in the initial rainwater pool (16), and a rainwater pipe network is arranged at the same end of the accident pool (15) and the initial rainwater pool (16);

and two ends of the landfill reservoir area (1) are respectively provided with a public unloading lifting channel (17).

2. A rigid landfill site for refuse according to claim 1, wherein the reservoir tank is a steel concrete tank.

3. A rigid landfill site according to claim 1, wherein the barrier layer (4) has a thickness of 2 mm.

4. A rigid landfill site according to claim 1, wherein the waste collection pipe is inclined from a position away from the sump (7) to a position close to the sump (7).

5. A rigid landfill site according to claim 1, wherein the landfill site (1) is provided with a canopy (2).

6. A rigid landfill site according to claim 5, wherein the canopy (2) includes a ceiling (19), a central post (20), side posts (21) and side sheds (22), the ceiling (19) being a double pitched ceiling.

7. A rigid landfill site according to claim 6, wherein the slope of the roof (19) is between 3 ° and 5 °.

8. A rigid landfill site according to claim 6, wherein the side walls (22) are provided on the side pillars (21) at both sides, and the side walls (22) are single-slope side walls.

9. A rigid landfill site according to claim 8, wherein the side walls (22) are triple layered.

10. A rigid landfill site according to claim 8, wherein the slope of the side walls (22) is between 30 ° and 45 °.