CN210208047U

CN210208047U - Refuse landfill

Info

Publication number: CN210208047U
Application number: CN201920584636.3U
Authority: CN
Inventors: Xingshun Shen; 沈兴顺
Original assignee: Malipo Xingshun Urban Environmental Management Service Co Ltd
Current assignee: Malipo Xingshun Urban Environmental Management Service Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-03-31
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses a refuse landfill, which comprises a landfill pool, a landfill pool covering layer and a methane pool, wherein the landfill pool comprises a pool body and a pool bottom; the tank bottom is in a quadrangular frustum pyramid shape, and a plurality of support walls are arranged in the tank bottom; a liquid accumulation pool is arranged between the support wall and the support wall; a leakage pipe is laid in the liquid accumulation tank and is connected with a liquid collection header pipe through a liquid collection branch pipe; the liquid collecting main pipe is connected with the methane tank; the top of the supporting wall is paved with a draining division bar, and a draining net is paved on the draining division bar; the wall of the landfill pond is sequentially provided with an inner impermeable layer, an outer impermeable layer and a foundation layer from inside to outside. The utility model discloses do benefit to solid-liquid separation, help the collection and the processing of rubbish fermentation liquid, avoid the seepage of harmful liquid or directly discharge to the environment in, the polluted environment.

Description

Refuse landfill

Technical Field

The utility model relates to a refuse handling installation, specifically speaking relate to a refuse landfill.

Background

The domestic garbage treatment has multiple modes of incineration, pyrolysis, landfill and the like, and because the cost of landfill treatment is low, the landfill treatment is carried out in a landfill mode in many places, but the existing garbage landfill site has a single structure and poor garbage treatment effect, and easily causes the leakage of garbage fermentation liquor to the environment to pollute the environment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an avoid rubbish zymotic fluid seepage, do benefit to the collection and the recovery processing of zymotic fluid, the refuse landfill of the emission of pollutant abatement.

In order to solve the technical problem, the utility model discloses a technical scheme does: a refuse landfill comprises a landfill pool, a landfill pool covering layer and a methane pool, wherein the landfill pool comprises a pool body and a pool bottom; the tank bottom is of a quadrangular frustum pyramid shape, and a plurality of support walls are arranged in the tank bottom; a liquid accumulation pool is arranged between the support wall and the support wall; a leakage pipe is laid in the liquid accumulation tank and is connected with a liquid collection header pipe through a liquid collection branch pipe; the liquid collecting main pipe is connected with the methane tank; a draining partition strip is laid on the top of the supporting wall, and a draining net is laid on the draining partition strip; the wall of the landfill pond is sequentially provided with an inner impermeable layer, an outer impermeable layer and a foundation layer from inside to outside.

Preferably, the outer impermeable layer comprises an HDPE thin film layer with the thickness of 1mm at the inner layer and a sodium bentonite waterproof blanket layer at the outer layer.

Preferably, the draining parting bead consists of a plurality of parting beads which are criss-cross.

Preferably, the covering layer of the landfill pool comprises a gravel layer, a sand sublayer, a waterproof layer, a pebble layer and a vegetation layer which are arranged from bottom to top.

Preferably, the waterproof layer comprises a bottom geotextile layer and an upper plastic film layer.

Preferably, the leakage pipe comprises an outer pipe and an inner pipe, wherein the outer pipe and the inner pipe are both provided with leakage holes, and a plurality of support rods are arranged between the outer pipe and the inner pipe.

Preferably, at least one underground water monitoring well is arranged around the landfill pool.

The utility model has the advantages that: 1. the bottom of the landfill pond is of a quadrangular frustum pyramid shape, so that the landfill pond is beneficial to the centralized accumulation of garbage fermentation liquor, and a plurality of supporting walls are arranged in the bottom of the landfill pond; a liquid accumulation pool is arranged between the support wall and the support wall; the leakage pipe is laid in the liquid accumulation tank, when garbage fermentation liquid in the liquid accumulation tank is accumulated to a certain extent, the garbage fermentation liquid can leak through the leakage pipe, finally enters the liquid collection header pipe through the liquid collection branch pipe, and is input into the fermentation tank for fermentation through the liquid collection header pipe, so that liquid collection at the bottom of the landfill tank is effectively avoided; 2. the wall of the landfill pond is sequentially provided with an inner impermeable layer, an outer impermeable layer and a foundation layer from inside to outside, and the double-layer impermeable layer is arranged, so that the fermentation liquor is effectively prevented from permeating to the bottom of the ground, and the pollutant is prevented from being discharged into the environment to cause secondary environmental pollution; 3. the mouth of the landfill pond is provided with a landfill pond covering layer, so that the discharge of harmful gas is reduced, and the fermentation is facilitated.

Drawings

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

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural view of the leakage pipe of the refuse landfill of the present invention;

fig. 4 is a sectional view a-a of fig. 2.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 4, the landfill of the present invention includes a landfill tank 1, a landfill tank covering layer 2 and a methane tank 3, specifically, the landfill tank 1 includes a tank body 11 and a tank bottom 12; the tank bottom 12 is of a quadrangular frustum pyramid shape, which is beneficial to the collection of garbage fermentation liquor, and a plurality of support walls 13 are arranged in the tank bottom 12; a liquid accumulation pool 14 is arranged between the support wall 13 and the support wall 13; the leakage pipe 4 is laid in the liquid collecting tank 14, the leakage pipe 4 in the utility model comprises an outer pipe 41 and an inner pipe 42, wherein both the outer pipe 41 and the inner pipe 42 are provided with leakage holes, a plurality of support rods 43 are arranged between the outer pipe 41 and the inner pipe 42, the double-layer leakage pipe is adopted to be beneficial to the permeation of fermentation liquor, the risk that the leakage pipe is blocked and liquid is inconvenient to drain is avoided, and the leakage pipe 4 is connected with the liquid collecting main pipe 6 through the liquid collecting branch pipe 5; the liquid collecting main pipe 6 is connected with the methane tank 3; the top of the supporting wall 13 is paved with a draining division bar 7, a draining net 71 is paved on the draining division bar 7, the draining division bar 7 mainly plays a supporting role, the draining net 71 prevents garbage from falling into the liquid accumulation pool 14, and the draining division bar 7 is composed of a plurality of criss-cross division bars; the wall of the landfill tank 1 is sequentially provided with an inner impermeable layer 15, an outer impermeable layer 16 and a foundation layer 17 from inside to outside; specifically, the outer barrier layer 16 comprises a HDPE film layer with an inner layer thickness of 1mm and a sodium bentonite waterproof blanket layer as an outer layer. The HDPE thin layer has good anti-seepage performance, can prevent liquid in the rubbish from permeating the earth surface and polluting underground water, and simultaneously prevents surface water from permeating the landfill pool 1, and the HDPE thin layer also has good anti-corrosion performance and moisture resistance, is suitable for various environments, and has long service life. The sodium bentonite waterproof blanket layer is formed by filling high-expansibility sodium bentonite between special composite geotextile and non-woven fabric, and the bentonite anti-seepage pad manufactured by a needle punching method can form a plurality of small fiber spaces, so that bentonite particles can not flow in one direction, and a uniform high-density colloidal waterproof layer is formed in the pad when meeting water, thereby further improving the anti-seepage performance of the outer anti-seepage layer 16. So that the fermentation liquor in the landfill tank 1 cannot permeate to the underground, and the discharge of polluted liquid is reduced.

In order to improve the landfill effect and avoid the cracking of the landfill covering layer 2, which leads to the release of more harmful gas and harmful substances, the landfill pool covering layer 2 comprises a gravel layer 21, a sand layer 22, a waterproof layer 23, a pebble layer 24 and a vegetation layer 25 which are arranged from bottom to top. The anti-seepage performance of the landfill covering layer 2 is enhanced through the multiple covering layers, clay is saved, and waste of the landfill storage capacity is reduced; rainwater and other external water are reduced from permeating into the garbage heap body, so that the aim of reducing garbage percolate is fulfilled; can prevent the impervious layer from cracking and shifting, control the stink emission of the landfill and organically release and collect the combustible gas from the upper part of the landfill

In order to improve the waterproofing effect of the landfill covering layer 2, the waterproof layer 23 includes a lower geotextile layer and an upper plastic film layer.

In order to facilitate the detection of whether the waste fermentation liquor in the landfill tank 1 is discharged or not, at least more than one underground water monitoring well 8 is arranged around the landfill tank 1.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A refuse landfill comprises a landfill pool (1), a landfill pool covering layer (2) and a methane tank (3), and is characterized in that the landfill pool (1) comprises a pool body (11) and a pool bottom (12); the tank bottom (12) is in a quadrangular frustum pyramid shape, and a plurality of support walls (13) are arranged in the tank bottom (12); a liquid accumulation pool (14) is arranged between the support wall (13) and the support wall (13); a leakage pipe (4) is laid in the liquid accumulation pool (14), and the leakage pipe (4) is connected with a liquid collection header pipe (6) through a liquid collection branch pipe (5); the liquid collecting main pipe (6) is connected with the methane tank (3); a draining partition strip (7) is laid on the top of the support wall (13), and a draining net (71) is laid on the draining partition strip (7); the wall of the landfill tank (1) is sequentially provided with an inner impermeable layer (15), an outer impermeable layer (16) and a foundation layer (17) from inside to outside.

2. The landfill site of claim 1, wherein the outer impermeable layer (16) comprises an HDPE film layer with an inner thickness of 1mm and a sodium bentonite waterproof blanket layer as an outer layer.

3. The landfill site according to claim 1, characterized in that the draining partitions (7) are composed of a plurality of criss-cross partitions.

4. A landfill site according to claim 1, characterized in that the landfill pond cover layer (2) includes a gravel layer (21), a sand layer (22), a waterproof layer (23), a pebble layer (24) and a vegetation layer (25) arranged from bottom to top.

5. The landfill according to claim 4, wherein the waterproof layer (23) comprises a bottom geotextile layer and an upper plastic film layer.

6. The landfill according to claim 1, wherein the leakage pipe (4) comprises an outer pipe (41) and an inner pipe (42), wherein the outer pipe (41) and the inner pipe (42) are provided with leakage holes, and a plurality of support rods (43) are arranged between the outer pipe (41) and the inner pipe (42).

7. A landfill site according to any one of claims 1 to 6, characterized in that there is at least one more groundwater monitoring well (8) around the landfill pond (1).