Landfill covering film partition sealing system and partition sealing method

Abstract

The present invention discloses a landfill covering film partition sealing system and a partition sealing method. The partition sealing system includes a landfill area, the landfill area is provided with at least one garbage partitioning ditch, so as to divide the two sides of the garbage partitioning ditch into two independent garbage piles, and the garbage partitioning ditch is provided with a covering film inserted along its height direction, and the covering film covers the top surface of the two garbage piles respectively. Such a setting provides a new type of covering film partition sealing method, which can quickly partition the pile, cooperate with the landfill gas collection method of under-film gas collection, separate the landfill gas between each partition, and can quickly control the gas collection area. Local damage will not affect the overall landfill gas concentration, effectively improve the landfill gas collection efficiency, and the covering film is partitioned and sealed, and the area of ​​each partition covering film becomes smaller, so that the covering film is not easily blown away by the wind, thereby improving the sealing effect of the covering film and reducing safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of landfills, and more particularly to a landfill covering film partition sealing system and a partition sealing method. Background Art

[0002] The existing landfill gas collection method is to collect gas through horizontal and vertical pipes in the pile, lay a covering film on the surface of the pile, and press it with cement blocks. However, when the covering film is damaged, air will enter the entire area under the film, reducing the landfill gas concentration. In addition, the pressure of cement blocks on the covering film is relatively small. Since the landfill area is large, the area of ​​the covering film is also relatively large. When the landfill is at an altitude, the wind speed is very high, and the covering film is prone to blasting, resulting in the covering film being lifted. The covering film has poor airtightness, reduces the landfill gas concentration, and poses a safety hazard. Summary of the invention

[0003] The object of the present invention is to provide a landfill covering film zoning sealing system and zoning sealing method to solve the problems in the above-mentioned background technology, to divide the landfill garbage pile into areas and seal them, to effectively improve the landfill gas collection efficiency, and to seal the covering film in areas so that the covering film is not easily blown away by the wind.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] The present invention provides a landfill covering film partitioning closed system, including a landfill area, wherein the landfill area is provided with at least one garbage partitioning ditch to divide the two sides of the garbage partitioning ditch into two independent garbage piles, and the garbage partitioning ditch is provided with a covering film inserted along its height direction, and the covering film covers the top surfaces of the two garbage piles respectively.

[0006] Preferably, the garbage partitioning groove is a square groove.

[0007] Preferably, the bottom and side surfaces of the garbage partitioning ditch are covered with the covering film.

[0008] Preferably, there are two covering films which are arranged overlappingly, the first ends of the two covering films are located at the bottom surface of the garbage partitioning groove, and the second ends of the two covering films extend out of the garbage partitioning groove and are stretched and spread toward the garbage piles on both sides respectively to cover the top surfaces of the two garbage piles.

[0009] Preferably, the first ends of the two covering films are fixedly connected together.

[0010] Preferably, the first ends of the two covering films are fixedly connected by single-track welding.

[0011] Preferably, the height H of the garbage partitioning ditch is 1.8 meters to 2.2 meters, and the width W is 0.8 meters to 1.2 meters.

[0012] Preferably, the garbage partitioning trench also includes landfill garbage filled on the covering film to compact the covering film.

[0013] Preferably, the covering film is a high-density polyethylene film.

[0014] The present invention also provides a partition sealing method based on the landfill covering film partition sealing system as described above, comprising the following steps: after compacting and leveling the landfill area, digging at least one garbage partitioning ditch on the landfill area; placing the covering film at the bottom of the garbage partitioning ditch and laying it flat along the bottom and side surfaces of the garbage partitioning ditch; filling the garbage partitioning ditch with landfill garbage, and compacting and leveling it; stretching and laying the covering film flat toward the garbage piles on both sides to cover the top surfaces of the two garbage piles.

[0015] In the technical solution provided by the present invention, a landfill covering film partition sealing system includes a landfill area, the landfill area is provided with at least one garbage partitioning ditch, so as to divide the two sides of the garbage partitioning ditch into two independent garbage piles, and the garbage partitioning ditch is provided with a covering film inserted along its height direction, and the covering film covers the top surface of the two garbage piles respectively. Such a setting provides a new type of covering film partition sealing method, which can quickly partition the pile, cooperate with the landfill gas collection method of under-film gas collection, separate the landfill gas between each partition, and can quickly control the gas collection area. Local damage will not affect the overall landfill gas concentration, effectively improve the landfill gas collection efficiency, and the covering film partitions are sealed, and the area of ​​each partition covering film becomes smaller, so that the covering film is not easily blown away by the wind, thereby improving the sealing effect of the covering film and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The structure of the landfill covering membrane partition closed system in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 2 The structure of the landfill covering membrane partition closed system in the embodiment of the present invention is shown in FIG. Figure 2 .

[0019] Figure 1-Figure 2 middle:

[0020] 1- Garbage partitioning ditch; 2-Garbage pile; 3-Covering film; 4-Garbage landfill. DETAILED DESCRIPTION

[0021] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0022] The following embodiments are described in detail with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the content of the invention described in the claims. In addition, the entire content of the structure represented by the following embodiments is not limited to the solution required as the invention described in the claims.

[0023] Please refer to the attached Figure 1-2 The landfill covering membrane partitioning closed system provided in this embodiment includes a landfill area, the landfill area is provided with at least one garbage partitioning ditch 1, so as to divide the two sides of the garbage partitioning ditch 1 into two independent garbage piles 2, and the garbage partitioning ditch 1 is provided with a covering film 3 inserted along its height direction, and the covering film 3 covers the top surfaces of the two garbage piles 2 respectively, so as to isolate and separate the two garbage piles 2. It should be noted that the "height direction" of the garbage partitioning ditch mentioned in the text refers to Figure 1 The placement state of the landfill covering film partition sealing system shown in the figure is indicated by the vertical direction in the figure. Such a setting provides a new type of covering film partition sealing method, which can quickly partition and seal the pile body, collect landfill gas in conjunction with the landfill gas collection method of under-film gas collection, separate the landfill gas between each partition, and quickly control each gas collection area. Local damage will not affect the overall landfill gas concentration, effectively improving the landfill gas collection efficiency, and the covering film is partitioned and sealed, and the area of ​​each partition covering film becomes smaller, so that the covering film is not easily blown away by the wind, improving the sealing effect of the covering film and reducing safety hazards.

[0024] like Figure 1 As shown, the garbage partition trench 1 is a square trench, which is convenient for construction and excavation during the elevation landfill process. The height H of the garbage partition trench 1 is 1.8 meters to 2.2 meters, and the width W is 0.8 meters to 1.2 meters. After multiple actual construction verifications and observations, it is concluded that the height H of the garbage partition trench 1 is preferably 2 meters and the width W is preferably 1 meter. The partition trench formed at this time is not only convenient for construction, but also has a better isolation effect. When the covering film is damaged, it can effectively play a partition role, ensuring that air does not enter other areas and reduce the landfill gas concentration in other areas.

[0025] In this embodiment, the bottom and sides of the garbage partitioning groove 1 are covered with a covering film 3, that is, the covering film 3 is laid flat along the bottom of the groove and extends upward along the side, further enhancing the isolation and blocking effect and improving the partition and sealing control of the garbage pile.

[0026] Specifically, there are two overlapping covering films 3, the first ends of the two covering films 3 are located at the bottom surface of the garbage partitioning groove 1, and the two layers of films are laid flat to cover the bottom surface. The second ends of the two covering films 3 extend out of the garbage partitioning groove 1 and are stretched and laid flat to the garbage piles 2 on both sides to cover the top surfaces of the two garbage piles 2. In this way, double-layer separation is adopted in the isolation area, and the partition sealing effect is better.

[0027] In a specific embodiment of the present invention, the first ends of the two covering films 3 are fixedly connected together to ensure that the two layers of film will not be misaligned and separated from each other, and to always ensure that there is double-layer isolation in the partition trench. In addition, the film connection is placed at the bottom to ensure that the two will not be easily torn apart by the wind, and to ensure that the covering film will not be damaged due to the disconnection of the connection, thereby affecting the landfill gas collection concentration.

[0028] In the preferred solution of this embodiment, the first ends of the two covering films 3 are fixedly connected by single-track welding, so that the welding speed is fast, the weld is formed in one time, the welding strength is high, the weld is smooth, and the connection is more firm and reliable, which is easy to implement.

[0029] like Figure 2 As shown, the garbage partition trench 1 also includes landfill garbage 4 filled on the covering film 3 to compact the covering film 3. In this way, the covering film is directly inserted into the garbage pile and compacted, which can play a role in fixing the covering film, and compared with fixing with cement blocks, the fixing effect of the covering film is improved.

[0030] As an optional embodiment, the covering film 3 is a high-density polyethylene film with a thickness of 0.75 mm or 1 mm. The high-density polyethylene film has excellent anti-corrosion performance, electrical performance, moisture resistance, anti-leakage performance, environmental stress cracking resistance, high tensile strength, anti-aging, stable and reliable material, long service life, and is suitable for closed isolation of landfills.

[0031] This embodiment also provides a partition sealing method based on the above-mentioned landfill covering film partition sealing system. The method is used when the landfill body is divided into regions to collect gas when collecting landfill gas in the landfill. When the garbage pile body is covered with a covering film, the covering film is inserted into the garbage pile body for partition sealing. The method includes the following steps: after compacting and leveling the landfill area, at least one garbage partition trench 1 is dug on the landfill area. Preferably, the garbage partition trench 1 is 2 meters high and 1 meter wide; the covering film 3 completed by single-track welding is placed at the bottom of the garbage partition trench 1 and laid flat along the bottom and side of the garbage partition trench 1; the landfill garbage 4 generated by trenching is filled into the garbage partition trench 1, and compacted and leveled; the covering film 3 is stretched and laid flat to the garbage pile bodies 2 on both sides to cover the top surfaces of the two garbage pile bodies 2. This covering film sealing method can quickly partition and seal the garbage pile body without interfering with each other, effectively improve the landfill gas collection efficiency, ensure the landfill gas concentration of each partition, and fix the covering film so that the covering film is not blown away by the wind.

[0032] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A landfill covering membrane partition closed system, characterized in that: The landfill area comprises at least one garbage partitioning ditch (1) for dividing two sides of the garbage partitioning ditch (1) into two independent garbage piles (2); the garbage partitioning ditch (1) is provided with a covering film (3) inserted along its height direction, and the covering film (3) covers the top surfaces of the two garbage piles (2) respectively; The bottom and side surfaces of the garbage partitioning trench (1) are covered with the covering film (3); The garbage partitioning trench (1) also includes landfill garbage (4) filled on the covering film (3) to compact the covering film (3); The covering films (3) are two and overlap each other, the first ends of the two covering films (3) are located on the bottom surface of the garbage partitioning groove (1), and the second ends of the two covering films (3) extend out of the garbage partitioning groove (1) and are stretched and laid flat on the garbage piles (2) on both sides to cover the top surfaces of the two garbage piles (2) and the top surface of the landfill garbage (4); The first ends of the two covering films (3) are fixedly connected together.

2. The landfill covering membrane partition closed system as claimed in claim 1, characterized in that: The garbage partitioning groove (1) is a square groove.

3. The landfill covering membrane partition closed system as claimed in claim 2, characterized in that: The first ends of the two covering films (3) are fixedly connected by single-track welding.

4. The landfill covering membrane partition closed system as claimed in claim 2, characterized in that: The height H of the garbage partitioning ditch (1) is 1.8 meters to 2.2 meters, and the width W is 0.8 meters to 1.2 meters.

5. The landfill covering membrane partition closed system as claimed in claim 1, characterized in that: The covering film (3) is a high-density polyethylene film.

6. A partition sealing method based on the landfill covering membrane partition sealing system according to claim 2, characterized in that: The following steps are involved: After compacting and leveling the landfill area, at least one garbage partitioning trench (1) is dug on the landfill area; a covering film (3) is placed at the bottom of the garbage partitioning trench (1) and spread along the bottom and side surfaces of the garbage partitioning trench (1); landfill garbage (4) is filled into the garbage partitioning trench (1), and compacted and leveled; the covering film (3) is stretched and spread toward the garbage piles (2) on both sides to cover the top surfaces of the two garbage piles (2).

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