CN212153470U

CN212153470U - Household garbage landfill yard closing system and household garbage landfill yard

Info

Publication number: CN212153470U
Application number: CN202020566542.6U
Authority: CN
Inventors: 刘艳; 戴亮; 颜文平; 李慧; 晏洪铃
Original assignee: Hunan Modern Environment Technology Co ltd
Current assignee: Hunan Modern Environment Technology Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-12-15
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses a domestic waste landfill closure system, including laying in proper order compaction soil barrier layer, HDPE rete, geotechnological cloth layer and the ecological bag closure vegetable layer on landfill layer surface from bottom to top. The utility model also provides a domestic waste landfill, including bottom seepage prevention system, side seepage prevention system and foretell domestic waste landfill closure system. The utility model discloses lay geotechnological cloth layer on the HDPE rete, the existence on geotechnological cloth layer can prevent that the HDPE rete from breaking, and the difficult rubbish landfill layer that gets into of surface water, and the prevention of seepage effect is better. The utility model discloses lay ecological bag field-sealing vegetable layer on geotechnological cloth layer surface. The utility model discloses a domestic waste landfill closure system simple structure, occupation space is little, can increase the effective landfill capacity of landfill.

Description

Household garbage landfill yard closing system and household garbage landfill yard

Technical Field

The utility model belongs to the environmental protection field especially relates to a refuse landfill and closing system thereof.

Background

At present, garbage disposal mainly comprises modes of garbage landfill, garbage incineration and the like. The waste incineration investment is large, the technical requirement is high, and the toxic and harmful gases generated in the treatment process are difficult to treat and easy to form secondary pollution, so about 85 percent of municipal domestic waste is subjected to landfill treatment.

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. After the existing domestic garbage landfill is filled, the surface layer is usually subjected to anti-seepage treatment by adopting compacted soil, then an HDPE film is laid, soil is laid on the HDPE film, and finally plants are planted on the surface of the soil. The field sealing treatment method has the following problems: 1. the HDPE film is easy to break, so that surface water enters a domestic garbage layer, and the treatment capacity of percolate is increased; 2. in order to ensure the growth of the planted plants, soil paved on the HDPE film is not compacted tightly, so that animals such as mice and the like can damage the HDPE film, and serious problems such as water leakage and the like are caused; 3. before the plants do not grow up, if rainstorm weather occurs, water and soil loss is serious, and flood interception ditches on two sides of the refuse landfill are seriously blocked.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome not enough and the defect mentioned in the above background art, provide an prevention of seepage effectual, the steadiness good, to environment friendly landfill closure system and domestic waste landfill. In order to solve the technical problem, the utility model provides a technical scheme does:

the utility model provides a domestic waste landfill yard closed system, includes the compaction soil barrier layer, HDPE rete, geotechnological cloth layer and the ecological bag closed vegetation layer of laying in proper order in landfill layer surface from bottom to top.

In the above-mentioned domestic waste landfill yard closed field system, preferably, ecological bag closed field vegetation layer includes ecological bag, vegetation planting medium and vegetation, vegetation planting medium install in the ecological bag. The utility model discloses in, the vegetation planting medium is by little rubble and brown soil mixed combination.

Among the above-mentioned domestic waste landfill yard closure system, preferred, including the fixed frame of ecological bag, the fixed frame of ecological bag is located on the geotechnological cloth layer, the fixed frame of ecological bag is equipped with a plurality of independent grids, the ecological bag is located in the independent grid. The fixing frame of the ecological bags can adopt UPVC frames, 4-8 ecological bags are placed in each independent grid, the stability of the vegetation layer of the ecological bag field sealing is enhanced, and the ecological bag fixing frame is particularly suitable for heavy rainfall areas. Adopt the fixed frame of ecological bag can strengthen overall stability, prevent to collapse, simultaneously, adopt ecological bag field-sealed vegetable layer can practice thrift the storage capacity, bury more domestic waste.

In the above-mentioned sealing system for a municipal solid waste landfill site, preferably, a perforated partition plate is provided at the lower part of the independent grid, a gap is provided between the perforated partition plate and the geotextile layer, and a hole is provided on the wall of the independent grid below the perforated partition plate. Above-mentioned mode of setting up can guarantee to have the space between ecological bag shut-in vegetable layer and the geotechnological cloth layer, can guarantee that ecological bag shut-in vegetable layer bottom still has the air, is favorable to the growth of vegetation.

As a general technical idea, the utility model also provides a domestic waste landfill, including bottom seepage prevention system, side seepage prevention system and foretell domestic waste landfill closure system. The household garbage landfill site sealing system, the bottom seepage-proofing system and the side seepage-proofing system enclose the household garbage landfill site into a closed area.

In the domestic garbage landfill, preferably, the bottom seepage-proofing system sequentially comprises a compacted soil seepage-proofing layer, an HDPE (high-density polyethylene) film layer and a geotextile layer from bottom to top; the side anti-seepage system comprises a compacted soil anti-seepage layer, an HDPE film layer and a geotextile layer from outside to inside in sequence.

In the above-mentioned domestic waste landfill, preferably, bottom anti-seepage system includes the water collection layer, the water collection layer is located geotechnological cloth layer surface, the water collection layer includes water-collecting sheet, first support and second support layering staggered arrangement, first support and second support locate on the water-collecting sheet, it has the rubble to fill in the space that first support and second support erect back formation. The drain pipe is arranged in the bottom anti-seepage system, the first support and the second support are arranged in a layered and staggered mode (if the first support and the second support are arranged in a cross mode), rapid infiltration of leachate in a landfill layer is facilitated, collection and treatment through the drain pipe are facilitated, and the leachate collected by the drain pipe enters the sewage treatment station for treatment.

In the above-mentioned domestic waste landfill, preferably, including the gas collection system, the gas collection system includes tertiary vertical collecting pipe, horizontal second grade person in charge and vertical one-level person in charge, tertiary vertical collecting pipe and horizontal second grade are responsible for and all are located in the landfill layer, vertical one-level is responsible for and runs through domestic waste landfill closure system and gas gathering station intercommunication, tertiary vertical collecting pipe all with horizontal second grade is responsible for the intercommunication, horizontal second grade is responsible for with vertical one-level is responsible for the intercommunication. Three-stage vertical collecting pipes are arranged on the upper layer of the garbage burying layer at intervals, and then the three-stage vertical collecting pipes are converged into the transverse secondary main pipe, finally the three-stage vertical collecting pipes are converged into the vertical primary main pipe, and the vertical primary main pipe is sent into a gas collecting station for treatment. The gas collection system is beneficial to large-area collection of waste gas and prevents safety accidents.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses lay geotechnological cloth layer on the HDPE rete, the existence on geotechnological cloth layer can prevent that the HDPE rete from breaking, and the difficult rubbish landfill layer that gets into of surface water, and the prevention of seepage effect is better.

2. The utility model discloses lay ecological bag closure vegetable layer on geotechnological cloth layer surface, ecological bag is an ultraviolet resistance polymer bag that adopts special material to make, but anti biodegradable and animal destruction, do not support, do not absorb, do not help the fungus class to grow, do not rot, do not go mildy, do not deteriorate, load the little rubble of certain proportion and soil in the bag after, the steadiness is good, to torrential rain weather, can pin soil, prevent that the peripheral flood cut ditch of landfill from blockking up, also can prevent that animals such as mouse from destroying underlying structure. Moreover, the ecological bag not only can plant turf, but also can be used for planting small saplings, and the integration of a domestic garbage landfill and the surrounding environment can be realized.

3. The utility model discloses a domestic waste landfill yard closing system and domestic waste landfill yard simple structure, occupation space is little, can increase the effective landfill storage capacity of refuse landfill yard.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a landfill site of the present invention.

Fig. 2 is a schematic structural diagram of the sealing system of the domestic garbage landfill site of the present invention.

Fig. 3 is the structure schematic diagram of the fixing frame of the middle ecological bag of the utility model.

Fig. 4 is a schematic structural diagram of the middle bottom anti-seepage system of the present invention.

Fig. 5 is a schematic structural diagram of the middle gas collection system of the present invention.

Illustration of the drawings:

1. filling a garbage buried layer; 2. compacting the soil impervious layer; 3. an HDPE film layer; 4. a geotextile layer; 5. a vegetation layer of an ecological bag sealing field; 6. an ecological bag; 7. ecological bag fixing frames; 71. an independent grid; 81. a water collection plate; 82. a first bracket; 83. a second bracket; 91. a third-level vertical collecting pipe; 92. a transverse secondary main pipe; 93. a vertical primary main pipe.

Detailed Description

To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.

Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.

Example (b):

as shown in fig. 2, the household garbage landfill yard sealing system of the embodiment includes a compacted soil impermeable layer 2, an HDPE film layer 3, a geotextile layer 4 and an ecological bag sealing yard vegetation layer 5 which are sequentially laid on the surface of a garbage landfill layer 1 from bottom to top.

In this embodiment, the vegetation layer 5 of the ecological bag closure includes the ecological bag 6, vegetation planting medium and vegetation, and the vegetation planting medium is installed in the ecological bag 6.

As shown in fig. 3, in the present embodiment, the ecological bag fixing frame 7 is included, the ecological bag fixing frame 7 is disposed on the geotextile layer 4, the ecological bag fixing frame 7 is provided with a plurality of independent grids 71, and the ecological bag 6 is disposed in the independent grids 71. The fixing frame 7 for the ecological bags of the embodiment has the following structure: the lower part of the independent grid is provided with a perforated clapboard, a gap is arranged between the perforated clapboard and the geotextile layer, and the wall of the independent grid below the perforated clapboard is provided with holes. The preferable ecological bag fixing frame 7 is beneficial to the growth and drainage of vegetation.

As shown in fig. 1, the household garbage landfill of this embodiment includes a bottom seepage-proofing system, a side seepage-proofing system, and the above-mentioned sealing system of the household garbage landfill.

In the embodiment, the bottom anti-seepage system sequentially comprises a compacted soil anti-seepage layer 2, an HDPE (high-density polyethylene) film layer 3 and a geotextile layer 4 from bottom to top; the side anti-seepage system comprises a compacted soil anti-seepage layer 2, an HDPE film layer 3 and a geotextile layer 4 from outside to inside in sequence.

As shown in fig. 4, in this embodiment, the bottom anti-seepage system includes a water collection layer, the water collection layer is disposed on the surface of the geotextile layer 4, the water collection layer includes a water collection plate 81, a first support 82 and a second support 83, the first support 82 and the second support 83 are arranged in a staggered manner (in a cross shape), the first support 82 and the second support 83 are disposed on the water collection plate 81, and a gap formed after the first support 82 and the second support 83 are erected is filled with broken stones.

As shown in fig. 5, in this embodiment, the gas collection system is included, and the gas collection system includes a third-level vertical collecting pipe 91, a horizontal second-level main pipe 92, and a vertical first-level main pipe 93, where the third-level vertical collecting pipe 91 and the horizontal second-level main pipe 92 are both located in the landfill layer 1, the vertical first-level main pipe 93 is communicated with the gas collection station through the landfill yard sealing system, the third-level vertical collecting pipe 91 is communicated with the horizontal second-level main pipe 92, and the horizontal second-level main pipe 92 is communicated with the vertical first-level main pipe 93.

The embodiment also provides a construction method of the household garbage landfill, which comprises the following specific steps: selecting a proper address as a plant address of a household garbage landfill, and then constructing a bottom seepage-proofing system and a side seepage-proofing system, wherein the bottom seepage-proofing system is sequentially paved with a compacted soil seepage-proofing layer 2, an HDPE (high-density polyethylene) film layer 3, a geotextile layer 4 and a water collection layer from bottom to top, the water collection layer is sequentially paved with a water collection plate 81, a first bracket 82 and a second bracket 83 from bottom to top, and then paving small broken stones; the compacted soil impervious layer 2, the HDPE film layer 3 and the geotextile layer 4 are sequentially paved on the side impervious system from outside to inside. After the bottom seepage-proofing system and the side seepage-proofing system are laid, domestic garbage is filled, and after the storage is full, a domestic garbage landfill closure system is finally utilized to carry out closure (a gas collection system is synchronously built), namely a compacted soil seepage-proofing layer 2, an HDPE film layer 3, a geotextile layer 4 and an ecological bag closure vegetable layer 5 are sequentially laid on the surface of a landfill layer 1.

Claims

1. The utility model provides a domestic waste landfill yard closed system which characterized in that includes from bottom to top lays in proper order in compaction soil barrier layer (2) on landfill layer (1) surface, HDPE rete (3), geotechnological cloth layer (4) and ecological bag closed vegetation layer (5).

2. The household garbage landfill yard closing system according to claim 1, wherein the ecological bag closing vegetation layer (5) comprises an ecological bag (6), vegetation planting media and vegetation, and the vegetation planting media are installed in the ecological bag (6).

3. The sealing system for a municipal solid waste landfill according to claim 2, characterized by comprising a fixing frame (7) for ecological bags, wherein the fixing frame (7) for ecological bags is provided on the geotextile layer (4), the fixing frame (7) for ecological bags is provided with a plurality of independent grids (71), and the ecological bags (6) are provided in the independent grids (71).

4. A domestic waste landfill comprising a bottom seepage control system, a side seepage control system and a domestic waste landfill closure system as claimed in any one of claims 1 to 3.

5. The domestic waste landfill according to claim 4, wherein the bottom anti-seepage system comprises a compacted soil anti-seepage layer (2), an HDPE membrane layer (3) and a geotextile layer (4) from bottom to top in sequence; the side anti-seepage system comprises a compacted soil anti-seepage layer (2), an HDPE film layer (3) and a geotextile layer (4) from outside to inside in sequence.

6. The domestic waste landfill according to claim 5, wherein the bottom anti-seepage system comprises a water collection layer, the water collection layer is arranged on the surface of the geotextile layer (4), the water collection layer comprises a water collection plate (81), a first support (82) and a second support (83), the first support (82) and the second support (83) are arranged in a layered and staggered manner, the first support (82) and the second support (83) are arranged on the water collection plate (81), and a gap formed after the first support (82) and the second support (83) are erected is filled with broken stones.

7. The household garbage landfill site according to claim 5, characterized by comprising a gas collection system, wherein the gas collection system comprises a third-level vertical collection pipe (91), a horizontal secondary main pipe (92) and a vertical primary main pipe (93), the third-level vertical collection pipe (91) and the horizontal secondary main pipe (92) are both located in the garbage landfill layer (1), the vertical primary main pipe (93) penetrates through the household garbage landfill site sealing system to be communicated with a gas collection station, the third-level vertical collection pipe (91) is both communicated with the horizontal secondary main pipe (92), and the horizontal secondary main pipe (92) is communicated with the vertical primary main pipe (93).