KR100658441B1 - Landfill Leachate Filtration Mat - Google Patents

Abstract

The present invention relates to a landfill leachate filtration mat, it is an object of the landfill waste is not settled even if the landfill settlement.

Waste landfill leachate filtration mat according to the present invention, the first geosynthetic sheet 10, the order sheet 20, the second geosynthetic sheet 30, the filtration sheet 40 are sequentially stacked from the bottom of the landfill (1) And a third geotextile sheet 50, wherein the filter sheet has a high tension filter net 41 having a drain hole and a purifying sand 42 that is filled in the filter net to purify the leachate discharged from the garbage embedded in the landfill. It is made of landfill. The filter net has a plurality of partitioned spaces formed therein through longitudinal partitions.

Description

Landfill Leachate Filtration Mat {LANDFILL PURIFYING-MAT}

1 is a state of construction of landfill leachate filter mat according to the present invention.

Figure 2 is an exploded perspective view of the landfill leachate filtration mat according to the present invention.

Figure 3 is a plan view of the filter network applied to the landfill leachate filter mat according to the present invention.

<Description of Signs for Main Parts of Drawings>

1: landfill, 10,30,50: geotextile sheet

11,21,31: non-slip band, 20: order sheet

40: filter sheet, 41: filter network

41a: partition, 41b: space

The present invention relates to a landfill leachate filtration mat, and more particularly, it is constructed in a landfill without using mutual coupling means, and even if partial settlement occurs in the landfill while allowing drainage and aeration of the leachate in the landfill trash. The present invention relates to a landfill leachate filtration mat which prevents the landfill from sinking due to the load of landfill waste.

Generally, landfill facilities for landfills are used either in the mountains, in valleys, or by digging in pits. All of these landfill facilities are inclined from the bottom. Therefore, the waste is stacked in a landfill facility, and then covered with waste to bury the waste.

In this case, however, rainwater permeates and the waste itself contains water, and the stacked waste streams of leachate contaminated with heavy metals, chemicals, etc. flow through the slope to contaminate soil and groundwater. Let's go.

In addition, in the case of the waste landfill facility 10, ventilation is not smooth, so that the gas formed in the stacked waste is not easily discharged, and oxygen is not smoothly supplied from the outside. Therefore, stabilization of waste landfill facilities is difficult because aerobic or semi-aerobic waste landfill facilities are not realized in a short time.

For this reason, slopes of landfills are constructed as follows to block leachate and effect aeration.

If the base is earth and sand, apply nonwoven fabric, synthetic synthetic resin clay (bentonite mat), order sheet, and nonwoven fabric (geocomposite, geonet, geotextile) from the base, Waste materials for leachate drainage, such as sand, are filled to a height of 30 cm or more, or waste tires are filled with sand, waste foundry sand, or sand, and landfill is disposed of.

The leachate drainage material is filled in, and the sandbag and waste tires woven from polyethylene filter and discharge the leachate contaminated with heavy metals and chemicals, and ensure the breathability to smoothly discharge the gas generated inside the garbage. In addition, it is prescribed to construct oxygen in order to smoothly supply oxygen from the outside to become an aerobic or semi-aerobic state and to protect the order sheet.

By the way, in the case of the sandbag, there is a lack of the coupling means of each sandbag, when stacked on the inclined surface, there is a problem that collapses well, when construction on the top of the inclined order sheet, the construction is slipped down well Not easy

In the above example, when the waste tire is installed on the upper surface of the inclined surface, that is, on the nonwoven fabric of the upper surface of the order sheet, the waste tire having a plurality of holes perforated on the ground surface is arranged on the inclined surface of the waste landfill facility, and then the low After binding to each other, the top of the top is fixed to the pile fixed to the outside in a low rope, and after filling the leachate drainage material in the top and the inside of the waste tire, the garbage is embedded.

In the case of the waste tires described above, the coupling means are mutually lacking and are easily collapsed even when stacked along the inclined surface from the bottom surface.

However, in this case, the weight of the waste tire is so large that when the waste is stacked, the rope bound to the outer pile or the rope binding to the top of the waste tire is cut off, and the waste tire falls along with the settled waste and the order sheet is torn.

Of course, the order sheet is constructed under the nonwoven fabric, but the order sheet is easily damaged by the nonwoven fabric descending together with the waste tires, or the nonwoven fabric is torn.

In addition, after the waste tires are installed on the inclined upper surface of the waste landfill facility, even when the waste tires are filled with leachate drainage materials such as sand, the leachate drainage materials flow down with rainwater and are lost. There is a problem.

In addition, the drainage and aeration is possible through a limited number of apertures perforated on the ground plane of the waste tire, thereby substantially reducing drainage and aeration efficiency.

And tying the waste tires listed on the wide slope into lows is cumbersome and difficult, requiring a lot of construction time and labor.

The present invention is to solve the above-mentioned conventional problems, the construction of the landfill without using a mutual coupling means, allowing the drainage and aeration of the leachate in the landfill waste and even if partial settlement occurs in the landfill landfill waste The purpose is to provide a landfill leachate filtration mat that prevents the landfill from total settlement by load.

Garbage landfill leachate filtration mat according to the present invention for achieving the above object includes a geosynthetic sheet, the order sheet, geosynthetic sheet, filtration sheet, geosynthetic sheet laminated from the bottom to a landfill, the filtration sheet is high-tension mesh Characterized in that the structure consists of a filtering net and a purifying sand filled in the filter net.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

As shown in Figure 1, the landfill leachate filtration mat 100 according to the present invention, the first geosynthetic sheet 10, the order sheet 20, the second geosynthetic fiber sheet 30 are sequentially stacked from the bottom side , Consisting of a filtration sheet 40 and a third geosynthetic fiber sheet 50 is laid on the bottom of the puddle form landfill (1).

The first, second and third geosynthetic fiber sheets (10,30,50) are made of the same material, and can be knitted, woven, and nonwoven fabrics, and are made of thermoplastic fibers having excellent physical properties, mechanical properties, and chemical resistance. To form a sheet.

The order sheet 20 is a geotextile, and blocks the leachate from being discharged.

Non-slip bands 11, 31, and 21 may be further formed on the surfaces (top and / or bottom) of the first and second geosynthetic fiber sheets 10 and 30 and the order sheet 20. That is, the non-slip strips 11, 31, 21 are caught by the non-slip strips 11, 31, 21 of the sheets which protrude from the sheets 10, 20, 30, and are stacked. Do not slip 30, 40, 50).

The non-skid straps 11, 21, 31 can be made by any method (such as winding on the sheets 10, 20, 30, etc.) that can protrude above the surface of each sheet 10, 20, 30. .

The filter sheet 40 is composed of a high tension filtration net 41 and a purifying sand 42 filled in the inner space of the filtration net 41 and a space formed therein.

The filter net 41 is woven in a net form by high tension fibers or the like so that even if partial settlement occurs in the landfill 1, the filter network 41 is pulled together by tension so that the partial settlement of the landfill 1 is not conducted to the surroundings.

Since the landfill 1 has an inclined surface, the filtering network 41 is divided by the vertical and horizontal partitions 41a so that the purifying sand 42 filled in the filtering network 41 does not flow downward on the inclined surface of the landfill 1. Partitioned space 41b. Briefly describing the manufacturing method of the filter net 41, the filter net 41 and the partition 41a are each woven in the form of a net formed to have a smaller hole than the particle size of the sand for purification. After arranging in the longitudinal direction, knotted with wires to form the space 41b, the filter 41 is made by filling the sand 41 for purification in this space 41b, and knotting and weaving a net with wires at the top. Can be. That is, the filter net 41 is in the form of a gabion.
Purifying sand 42 filters and discharges leachate contaminated with heavy metals and chemicals, ensures breathability to smoothly discharge the gas generated inside the waste (W), and smoothly supplies oxygen from the outside to aerobic or semi-ho It is an aggregate (stone) of the particle size which will be made into a ready state, protects a sheet | seat, and will not pass through the hole of the filter net 41 and the partition 41a which are respectively a net form.

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The filter sheet 40 may be used only in accordance with the size of the landfill 1 or a plurality of nets are woven, it is fixed through the anchor 60 as described below.

Here, the first, second, third geosynthetic sheet (10, 30, 50) and the order sheet 20 is a thin thickness, the filter sheet 40 is the first, second, third to ensure filtration and breathability Geotextile sheet 10, 30, 50 and the order sheet 20 is formed thicker than, for example, 8 ~ 12cm.

Each of these sheets 10, 20, 30, 40, 50 are sequentially laminated from the bottom surface to the landfill 1, it may be firmly fixed to the landfill 1 through one or more anchors (60).

On the other hand, the bottom of the landfill 1 may be provided with a collecting well (2) for collecting the water drained from the mat (100). At this time, the first geosynthetic sheet 10, the order sheet 20 and the second geosynthetic sheet 30 may be divided into both sides with respect to the sump (2) can be constructed respectively.

The operation of the landfill leachate filtration mat according to the present invention configured as described above is as follows.

The ground is excavated to form a puddle-type landfill 1, and a water collecting well 2 is constructed at the bottom of the landfill 1. The sump (2) is connected to the sump pump through the sump pipe to drain the water drained from the mat (100).

When the compaction work of the landfill 1 is completed, the first geotextile sheet 10, the order sheet 20, the second geotextile sheet 30, the filter sheet 40, and the third civil engineering work from the bottom of the landfill 1 are completed. The fiber sheets 50 are sequentially stacked.

The laminated sheets 10, 20, 30, 40, and 50 remain pressed while being pressed by their own weight, and additionally, non-slip strips 11, 21, and 31 of the respective sheets 10, 20, and 30 are held. The slippage is less likely to occur.

In addition, the purifying sand 42 is filled with the filter net 41 of the filter sheet 40 in a plurality of partitioned space 41b so that the purifying sand 42 corresponding to the inclined surface of the landfill 1 is inclined on the inclined surface. It will not flow down.

When the construction of the mat 100 is completed, the land (W) is embedded on the mat 100 and then covered.

The leachate in the waste (W) is purified through the sand 42 for purification of the filter sheet 40, the air is smoothly discharged through the pores between the sand for purification 42 to discharge the gas generated inside the waste (W) smoothly .

Meanwhile, when the landfill 1 is a soft ground, partial settlement may occur in the landfill 1. When the ground subsidence of the landfill 1 is generated as described above, the mat 100 is deformed along the ground subsidence by the load of the waste (W), but the strainer 41 of the filter sheet 40 pulls each other because it is a high tensile force. Thus, the sand for purification 42 does not sag downward due to ground subsidence. That is, since the sand for purification 42 having the greatest load among the sheets 10, 20, 30, 40, and 50 does not settle, the landfill waste W maintains the landfill state without settling.

As described above, according to the landfill leachate filtration mat according to the present invention, the leachate generated from the landfill waste can be filtered to prevent soil contamination, and even if the landfill is settled, the mat is not deformed along the settlement. The landfill state of landfill waste can be maintained without

In addition, by using only one filter sheet on the landfill, a coupling means for combining a plurality of filter sheets is unnecessary, and the sand for purification is filled in the partitioned space of the filter net so as not to flow downward along the slope of the landfill to maintain a stacked state. The sheet can be protected by this.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described. Rather, it will be apparent to those skilled in the art that many changes and modifications to the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (3)

delete It comprises a first geosynthetic sheet, a degree sheet, a second geosynthetic sheet, a filter sheet and a third geosynthetic sheet, which are sequentially stacked from the bottom of a landfill of fine form on the ground, The filter sheet is composed of a high tension filter net having a drain and a purifying sand filled in the filter net to purify the leachate discharged from the garbage embedded in the landfill, and spread on the landfill, The filter net is a landfill type leachate filtration, characterized in that a plurality of partitions are formed by knotting each other in the form of a net-shaped partitions arranged in the longitudinal direction, and the sand for purification is independently filled in the plurality of partitions. mat. The landfill leachate filtration mat according to claim 2, wherein an anti-slip band is further formed on the surfaces of the first geotextile sheet, the order sheet, and the second geotextile sheet.

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