JP2019217470A - Waste landfill method - Google Patents

Abstract

To provide means for promoting stabilization of landfilled waste.SOLUTION: A waste landfill method comprises the following processes. In a first process, a landfill zone selected from plural landfill zones for a disposal pit 11 is covered with a cover facility 12. In a second process, waste of a prescribed thickness or less is landfilled in the landfill zone covered with the cover facility 12. In a third process, soil covering of the prescribed thickness is performed on the waste landfilled in the landfill zone covered with the cover facility 12. In a fourth process, the cover facility 12 is moved to another landfill zone selected from the plural landfill zones. At that time, the soil-covered waste is exposed to environment without being covered with an impermeable layer. As a result, sufficient oxygen and water (rain water) are supplied to microbes in the waste and decomposition of organic matters in the waste progresses, and washing-out of the waste is performed by rain water. As a result, stabilization of the waste is promoted. Each of the processes are repeatedly performed with respect to each of the plural landfill zones until the disposal pit 11 becomes full.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a method for landfill disposal of waste.

  Most managed landfills where waste is landfilled are open landfills that are installed outdoors. In an open-type disposal site, problems such as scattering of waste, odor, and groundwater pollution may occur at the time of landfill.

  In order to alleviate the above-mentioned problem of the open type disposal site, a closed system disposal site having a cover facility that covers the landfill at the time of landfill may be employed. In the closed system disposal site, a whole shed system in which everything above the landfill is covered by a cover facility, and a small cover facility that covers a part of the landfill where the landfill is to be performed. There is a shed moving system that allows you to move.

  As a patent document which discloses a technique relating to a closed system disposal site of a shed moving system, there is, for example, Patent Document 1. Patent Literature 1 describes an indoor waste disposal site provided with a movable roof above a disposal pit for landfill disposal of waste. In the indoor waste disposal site described in Patent Literature 1, while moving a movable roof to an adjacent section, waste is reclaimed in multiple stages in a disposal pit below the movable roof.

JP 2011-194369 A

  In both open-type and closed-system landfills, if the landfill is high, the air permeability to the waste landfilled below is impaired, and the decomposition of organic matter by microorganisms is hindered. In addition, waste often shows high alkalinity due to the influence of incineration ash and the like. Therefore, it takes a long time for the leachate to reach the drainage standard.

  In view of the above background, the present invention provides a means for promoting the stabilization of landfill waste.

  In order to solve the above-mentioned problems, the present invention provides a step of covering a landfill section selected from a plurality of landfill sections of a disposal pit with a cover facility, and a step of reclaiming waste having a predetermined thickness or less in the covered landfill section. And a step of covering the covered landfill with a predetermined thickness of waste buried below the predetermined thickness in the covered landfill section, and moving the cover facility from the landfill section where the covering of the waste was performed, A step of stabilizing the waste buried in the landfill section to which the cover facility has been moved without covering the landfill with an impermeable layer, wherein for each of the plurality of landfill sections, the step of covering and the step of burying the landfill. A first aspect of the present invention provides a method of landfilling waste, in which the soil covering step, the moving step, and the stabilizing step are performed a plurality of times.

  According to the waste landfill method according to the first aspect, the waste buried to a predetermined thickness or less in the landfill section is watered during the period covered by the cover facility and the period not covered by the cover facility. In this way, the stabilization of waste is promoted by washing out with rainwater and decomposing organic matter by supplying oxygen to microorganisms.

  In the waste landfill method of the first aspect, a configuration may be adopted as a second aspect, which comprises a step of installing an impermeable layer on the cover soil after the stabilizing step.

  According to the waste disposal method of the second aspect, leachate from unstabilized upper layer waste does not enter lower layer stabilized waste.

  In the waste landfill method according to the first or second aspect, for each of the unfilled landfill sections among the plurality of landfill sections, the pH and the decomposition of organic matter of the waste landfilled in the landfill sections are determined. A step of specifying at least one of the progress degree, and the cover moved in the moving step from the unfilled landfill section based on at least one of the specified pH and the progress degree of organic matter decomposition. A configuration in which a landfill section to be newly covered at a facility is selected may be adopted as the third mode.

  According to the waste landfill method of the third aspect, waste can be efficiently stabilized.

The figure which showed typically the whole structure of the waste disposal site which concerns on one Embodiment. The figure for demonstrating the process which performs landfilling of the waste material in the disposal pit which concerns on one Embodiment. The figure for demonstrating the process which performs landfilling of the waste material in the disposal pit which concerns on one Embodiment. The figure for demonstrating the treatment of the leachate from waste in the disposal pit which concerns on one Embodiment. The figure for demonstrating the process which performs the landfill of the waste in the waste disposal site concerning one modification. The figure for demonstrating the process which performs the landfill of the waste in the waste disposal site concerning one modification.

[Embodiment]
Hereinafter, a method of landfilling waste in a waste disposal site 1 according to an embodiment of the present invention will be described. FIG. 1 is a diagram schematically showing the entire configuration of the waste disposal site 1.

  The waste disposal site 1 is a closed system disposal site of a shed movement type, and is provided with a disposal pit 11 having a rectangular bottom surface and a cover facility 12 that covers a part of the upper part of the disposal pit 11. In the following description, directions in the waste disposal site 1 are described using x, y, and z indicated by three arrows in FIG.

  The cover facility 12 includes a roof 121 that covers above the disposal pit 11, a right wall 122R that supports the roof 121 below the y-side edge, and a roof 121 that is below the −y-side edge. A left wall 122L as a supporting wall is provided. Hereinafter, the right wall 122R and the left wall 122L are collectively referred to as “walls 122”.

  The cover facility 12 further includes a front curtain 123F that is a flexible sheet that hangs down from the x-side edge of the roof 121, and a flexible sheet that hangs down from the −x-side edge of the roof 121. A curtain 123B is provided. Hereinafter, the front curtain 123F and the rear curtain 123B are collectively referred to as “curtain 123”.

  The material of the curtain 123 may be any material as long as it prevents dust generated in the cover facility 12 from leaking to the outside, has water resistance, and has flexibility that can follow the shape of waste and cover soil. There may be. Specific examples of the material of the curtain 123 include polyester, tarpaulin, rubber, and the like.

  The cover facility 12 further includes a winding mechanism (not shown) that winds the front curtain 123F and the rear curtain 123B. By the winding mechanism, the lower end positions of the front curtain 123F and the rear curtain 123B can be adjusted within a range from the bottom surface to the top surface of the disposal pit 11.

  In the waste disposal site 1 shown in FIG. 1, a slide method is adopted as a method of moving the cover facility 12. In this case, a rail 13R extending in the x direction is installed outside the upper edge of the disposal pit 11 in the y direction, and a rail 13L extending in the x direction is installed outside the upper edge of the disposal pit 11 in the −y direction. Is installed. Hereinafter, the rails 13R and 13L are collectively referred to as “rails 13”.

  Wheels (not shown) that rotate along the rails 13 are provided on the lower end surfaces of the right wall 122R and the left wall 122L of the cover facility 12, respectively. The operator can easily move the cover facility 12 along the rail 13 by rotating the wheels.

  A leachate treatment facility 14 is provided adjacent to the disposal pit 11. The leachate treatment facility 14 is a facility for treating leachate from waste reclaimed in the disposal pit 11.

  FIG. 2 is a diagram for explaining a process of landfilling waste in the disposal pit 11. 2 (A), 2 (B), 2 (C), and 2 (D), the upper part is a plan view of the disposal pit 11 as viewed from above, and the lower part is the disposal pit 11 on the side. It is sectional drawing seen from the direction (y side).

  In the example of FIG. 2, the size of the disposal pit 11 in plan view is approximately four times the size of the roof 121. FIG. 2A shows a state in which approximately one quarter of the disposal pit 11 closest to the −x side is covered by the roof 121. Hereinafter, the portion of the disposal pit 11 covered by the roof 121 in the state shown in FIG. 2A is referred to as a first landfill section.

  FIG. 2B illustrates a state in which approximately one quarter of the disposal pit 11 adjacent to the first landfill section from the x side is covered by the roof 121. Hereinafter, the portion of the disposal pit 11 covered by the roof 121 in the state shown in FIG. 2B is referred to as a second landfill section.

  FIG. 2C illustrates a state in which approximately one quarter of the disposal pit 11 adjacent to the second landfill section from the x side is covered by the roof 121. Hereinafter, the portion of the disposal pit 11 covered by the roof 121 in the state shown in FIG. 2C is referred to as a third landfill section.

  FIG. 2 (D) shows approximately one quarter of the disposal pit 11 adjacent to the third landfill section from the x side, that is, approximately one quarter of the disposal pit 11 closest to the x side. Is covered by the roof 121. Hereinafter, the portion of the disposal pit 11 covered by the roof 121 in the state shown in FIG. 2D is referred to as a fourth landfill section.

  The worker first covers the first landfill section of the empty disposal pit 11 with the cover facility 12 as shown in FIG. The operator adjusts the length of the front curtain 123F such that the lower end of the front curtain 123F contacts the bottom surface of the disposal pit 11. Further, the operator adjusts the length of the rear curtain 123B such that the lower end of the rear curtain 123B contacts the upper end of the disposal pit 11.

  Subsequently, the worker reclaims the waste to a predetermined thickness (for example, approximately 3 m or less for general waste) in the first landfill section covered by the cover facility 12, and places the waste on the bottom surface of the first landfill section. To form a waste layer 21 (1).

  Subsequently, the worker covers the waste layer 21 (1) with a predetermined thickness (for example, approximately 50 cm in the case of general waste), and covers the soil layer 31 (1) on the waste layer 21 (1). Form 1). The lower part of FIG. 2A shows a state where the formation of the earth covering layer 31 (1) is completed.

  Subsequently, the worker moves the cover facility 12 from the first landfill section to the second landfill section. That is, the worker moves the cover facility 12 from the first landfill section to the second landfill section, which is a newly selected landfill section from the first landfill section to the fourth landfill section.

  The cover facility 12 shown in FIG. 2B shows the cover facility 12 in a state of covering the second landfill section. The operator adjusts the length of the rear curtain 123B such that the lower end of the rear curtain 123B contacts the upper surface of the earth covering layer 31 (1). The length of the front curtain 123F is maintained such that the lower end is in contact with the upper surface of the disposal pit 11.

  Subsequently, the worker fills the second landfill section covered by the cover facility 12 with waste having a thickness of about 3 m or less. As a result, a waste layer 21 (2) having a thickness of about 3 m or less is formed on the bottom surface of the second landfill section.

  Subsequently, the worker covers the waste layer 21 (2) with a thickness of about 50 cm. As a result, a soil covering layer 31 (2) is formed on the waste layer 21 (2). The lower part of FIG. 2B shows a state in which the formation of the earth covering layer 31 (2) is completed.

  Subsequently, the worker moves the cover facility 12 from the second landfill section to the third landfill section. That is, the worker moves the cover facility 12 from the second landfill section to the third landfill section, which is a newly selected landfill section from the first landfill section to the fourth landfill section, and covers it.

  The cover facility 12 shown in FIG. 2C shows the cover facility 12 covering the third landfill section. The length of the front curtain 123F is maintained such that the lower end thereof is in contact with the upper surface of the disposal pit 11, and the length of the rear curtain 123B is such that the lower end thereof is in contact with the upper surface of the earth covering layer 31 (2). Has been maintained.

  Subsequently, the worker fills the third landfill section covered by the cover facility 12 with waste having a thickness of about 3 m or less. As a result, a waste layer 21 (3) having a thickness of about 3 m or less is formed on the bottom surface of the third landfill section.

  Subsequently, the worker covers the waste layer 21 (3) with a thickness of about 50 cm. As a result, a soil covering layer 31 (3) is formed on the waste layer 21 (3). The lower part of FIG. 2C shows a state in which the formation of the covering layer 31 (3) is completed.

  Subsequently, the worker moves the cover facility 12 from the third landfill section to the fourth landfill section. That is, the worker moves the cover facility 12 from the third landfill section to the fourth landfill section, which is a newly selected landfill section from the first landfill section to the fourth landfill section, and covers it.

  The cover facility 12 shown in FIG. 2D shows the cover facility 12 covering the fourth landfill section. The operator adjusts the length of the front curtain 123F so that the lower end of the front curtain 123F contacts the upper end of the disposal pit 11. The length of the rear curtain 123B is maintained such that the lower end is in contact with the upper surface of the earth covering layer 31 (3).

  Subsequently, the worker fills the fourth landfill section covered by the cover facility 12 with waste having a thickness of about 3 m or less. As a result, a waste layer 21 (4) having a thickness of about 3 m or less is formed on the bottom surface of the fourth landfill section.

  Subsequently, the worker covers the waste layer 21 (4) with a thickness of about 50 cm. As a result, a soil covering layer 31 (4) is formed on the waste layer 21 (4). The lower part of FIG. 2D shows a state in which the formation of the earth covering layer 31 (4) is completed.

  FIG. 3 is a view for explaining a step that follows the step of forming the soil covering layer 31 (4). After completing the formation of the earth covering layer 31 (4) in the fourth landfill section, the worker subsequently moves the cover facility 12 from the fourth landfill section to the first landfill section, which is a newly selected landfill section. The cover facility 12 shown in FIG. 3A is a cover facility 12 arranged to cover the first landfill section again.

  In the lower diagram of FIG. 3A, the waste layer 21 indicates a waste layer in which the waste layers 21 (1) to 21 (4) are connected. In the lower part of FIG. 3A, the soil covering layer 31 indicates a soil covering layer in which the soil covering layers 31 (1) to 31 (4) are connected.

  In the cover facility 12 shown in FIG. 3A, the front curtain 123 </ b> F is adjusted to have a length such that the lower end contacts the upper surface of the covering layer 31. Further, in the cover facility 12 shown in FIG. 3A, the rear curtain 123B is adjusted to a length such that the lower end is in contact with the upper end of the disposal pit 11.

  The worker performs the second formation of the waste layer and the formation of the soil cover layer in the first landfill section covered by the cover facility 12. As a result, as shown in the lower part of FIG. 3A, a waste layer 22 (1) having a thickness of about 3 m or less and a soil covering of about 50 cm in thickness are provided on the soil covering layer 31 of the first landfill section. Layer 32 (1) is formed.

  Thereafter, the worker performs the second formation of the waste layer and the formation of the soil cover layer after performing the cover by the cover facility 12 for each of the second to fourth landfill sections. FIG. 3B shows a state in which the second formation of the waste layer and the formation of the earth covering layer are completed for each of the first to fourth landfill sections. In the lower part of FIG. 3B, the waste layer 22 is the second waste layer formed in the first to fourth landfill sections. In the lower part of FIG. 3B, the soil covering layer 32 is a second soil covering layer formed in the first to fourth landfill sections.

  Thereafter, the worker performs the third formation of the waste layer and the formation of the soil cover layer after performing the cover by the cover facility 12 for each of the first to fourth landfill sections. FIG. 3C shows a state in which the formation of the third waste layer and the formation of the cover soil layer are completed for each of the first to fourth landfill sections. In the lower part of FIG. 3C, the waste layer 23 is the third waste layer formed in the first to fourth landfill sections. In the lower part of FIG. 3C, the soil covering layer 33 is a third soil covering layer formed in the first to fourth landfill sections.

  In the example of FIG. 2 to FIG. 3, the disposal pit 11 is full when three layers of the waste layer and the cover layer are alternately stacked.

  Subsequently, the operator removes the cover facility 12 from the disposal pit 11 and caps the soil cover layer 33. This completes the landfill operation for the disposal pit 11.

  FIG. 4 is a diagram for explaining the treatment of leachate from waste in the disposal pit 11. FIG. 4 shows a state in which the formation of the first waste layer and the soil cover layer in the first to third landfill sections has been completed, and the first formation of the waste layer in the fourth landfill section has been performed. ing.

  In the fourth landfill section covered by the cover facility 12, watering is performed by the watering facility 124 on the input waste. Also, in the first to third landfill sections not covered by the cover facility 12, if there is natural rainfall, rainwater infiltrates into the covered waste.

  In any of the first to fourth landfill sections, since the input waste is not covered with the impermeable layer, oxygen and water are supplied into the waste. Therefore, the organic matter is decomposed by the microorganism and the waste is washed out. As a result, the stabilization of waste is promoted. In the present application, the stabilization of the waste means at least one of the progress of decomposition of the organic matter contained in the waste and the decrease of the pH of the waste.

  As described above, in the present embodiment, the soil-covered waste is exposed to air and rainwater without being covered with the impermeable layer and is stabilized after the cover facility 12 is removed. That is, in the waste landfill method according to the present embodiment, in each of the first to fourth landfill sections, a waste layer and a soil layer are formed, and after the cover facility 12 is removed, And stabilizing the object without covering it with the impermeable layer. The step of stabilizing the waste is continuously performed while the step of burying the waste in the landfill section covered by the cover facility 12 and the step of covering the buried waste with soil proceed.

  With the stabilization of waste, leachate is generated from waste. This leachate contains rainwater and water sprinkled from the sprinklers 124. A leachate drainage pipe (not shown) for draining leachate generated from waste in the disposal pit 11 is provided on the bottom surface of the disposal pit 11. The leachate collected by the leachate drainage pipe is drained to the leachate treatment facility 14 and treated by the leachate treatment facility 14.

  In the waste landfill method according to the present embodiment, since the rainwater that has fallen into the landfill section covered by the cover facility 12 is discharged out of the disposal pit 11 as compared with the open type disposal site, the leachate treatment facility is used. 14 reduces the amount of leachate to be treated. Therefore, the leachate treatment facility 14 can be downsized.

  Further, the treatment capacity that the leachate treatment facility 14 should have is also affected by the peak value of the leachate concentration. In the case of the waste landfill method according to the present embodiment, when the waste is charged to a predetermined thickness, the waste is covered with soil, is exposed to the outside without being covered with an impermeable layer, and is stabilized by the supply of oxygen and the penetration of rainwater. For example, the peak value of the leachate concentration is compared with a method in which waste and cover soil are alternately charged at a predetermined thickness until the same section is full without moving the cover facility 12, because the cover facility 12 is not moved. Is lower. Therefore, a high treatment capacity is not required for the leachate treatment facility 14.

[Modification]
The embodiments described above can be variously modified. Hereinafter, examples of those modifications will be described. Note that two or more modified examples described below may be appropriately combined.

(1) The waste landfill method according to the above-described embodiment does not include a step of covering the covered waste layer with an impermeable layer. However, the waste landfill method according to the present invention may include a step in which the worker installs an impermeable layer on the soil cover layer after the waste is sufficiently stabilized.

  FIG. 5 is a diagram for explaining a step of performing landfill of waste in a waste disposal site 1 according to this modification. Although FIG. 5 shows an example in which landfill is performed in the first landfill section, landfill is performed in the same procedure for other landfill sections.

  FIG. 5A shows a state in which the waste layer 21 (1) is formed on the bottom surface of the first landfill section covered by the cover facility 12. A drain pipe p for discharging leachate to a leachate treatment facility 14 (not shown in FIG. 5) is disposed at the bottom of the disposal pit 11. In this state, the water (arrow w1) sprinkled by the water spray facility 124 (not shown in FIG. 5) in the cover facility 12 passes through the waste layer 21 (1) and reaches the bottom of the disposal pit 11 (arrow). w2) Then, it flows into the drain pipe p (arrow w3) and is discharged to the leachate treatment facility 14.

  FIG. 5B shows a state in which the formation of the waste layer 21 (1) is completed in the first landfill section covered by the cover facility 12, and the soil layer 31 (1) is formed thereon. ing. In this state, the water (arrow w4) sprinkled by the water spraying facility 124 in the cover facility 12 passes through the soil cover layer 31 (1) and the waste layer 21 (1) and reaches the bottom of the disposal pit 11 (arrow). w5) Then, it flows into the drain pipe p (arrow w6) and is discharged to the leachate treatment facility 14.

  FIG. 5 (C) shows a state of the first landfill section after the cover facility 12 has been moved after the formation of the soil covering layer 31 (1) is completed. In this state, the rainwater (arrow w7) due to the rainfall passes through the soil covering layer 31 (1) and the waste layer 21 (1), reaches the bottom of the disposal pit 11 (arrow w8), and then flows into the drain pipe p. (Arrow w9), and is discharged to the leachate treatment facility 14.

  FIG. 5D shows that after the waste layer 21 (1) has sufficiently stabilized in the state of FIG. 5C, the impermeable layer 41 (1) is disposed on the covering layer 31 (1). FIG.

  FIG. 5E shows that after the impermeable layer 41 (1) is disposed, the first landfill section is covered again by the cover facility 12, and the waste layer 22 (1) is placed on the impermeable layer 41 (1). Are formed. In this state, the water (arrow w10) sprinkled by the water spray equipment 124 in the cover facility 12 passes through the waste layer 22 (1), reaches the water-impermeable layer 41 (1) (arrow w11), and is impermeable. Flow on the layer 41 (1) toward the side wall of the disposal pit 11 and the curtain 123 of the cover facility 12 (arrow w12), descends along the side wall of the disposal pit 11 and the curtain 123 of the cover facility 12, and flows into the drain pipe p ( An arrow w13) is discharged to the leachate treatment facility 14.

  According to this modification, when unstabilized waste is input onto the stabilized waste layer, leachate from the unstabilized waste enters the stabilized waste layer. Is avoided.

(2) In the above-described embodiment, after the formation of the waste layer and the soil cover layer in one landfill section is completed, the next selection of the landfill section in which the waste layer and the cover soil layer are formed includes the first landfill section, The second landfill section, the third landfill section, the fourth landfill section, the first landfill section, and so on are performed in accordance with the rules of patrol in a certain order. The rules for selecting a landfill section are not limited to this. For example, after a waste layer is formed at least once in each landfill section, when selecting the next landfill section to be landfilled, the stabilization progress of each of the plurality of landfill sections, that is, pH, And at least one of the progress of organic matter decomposition is specified, and based on at least one of the specified pH and the progress of organic matter decomposition, the landfill section to which the cover facility 12 is moved from among the unfilled landfill sections, that is, Next, a landfill section to be landfilled may be selected.

(3) In the above-described embodiment, the disposal pit 11 is divided into four landfill sections. However, the number of the landfill sections constituting the disposal pit 11 may be any number as long as it is two or more. Good.

(4) In the above embodiment, the number of the covering facilities 12 used is one, but two or more covering facilities may cover two or more landfill sections of the disposal pit 11 at the same time. . FIG. 6 shows that in a waste disposal site having two disposal pits, namely, disposal pits 511 and 512, the landfill disposal of waste is performed using the lid facility 521 in the disposal pit 511 and the lid facility 522 in the disposal pit 512. It is a figure (plan view) for explaining the method to perform.

  FIG. 6A shows a state in which the cover facility 521 covers the first landfill section of the disposal pit 511, and the cover facility 522 covers the first landfill section of the disposal pit 512. In this state, the worker puts waste into the first landfill section of the disposal pit 511, and then performs soil covering. Subsequently, the worker puts waste into the first landfill section of the disposal pit 512, and then performs soil covering.

  The worker moves the cover facility 521 to the second landfill section of the disposal pit 511 while the disposal pit 512 is being charged with waste or covered with soil. FIG. 6B shows a state where the cover facility 521 has moved to the second landfill section of the disposal pit 511.

  When the input and the covering of the waste in the first landfill section of the disposal pit 512 covered by the cover facility 522 are completed, the worker inputs the waste in the second landfill section of the disposal pit 511 covered by the cover facility 521. And soil covering.

  The worker moves the cover facility 522 to the second landfill section of the disposal pit 512 while the disposal pit 511 is being filled with waste or soil is being covered. FIG. 6C shows a state in which the cover facility 522 has moved to the second landfill section of the disposal pit 512.

  By using a plurality of cover facilities as described above, the work of landfilling waste and covering soil in a landfill section covered by another cover facility while moving one cover facility can be performed in parallel.

(5) The thickness of the waste layer and the thickness of the covering layer exemplified in the above-described embodiment may be variously changed within a range specified by law. Further, in the above-described embodiment, the number of the waste layers and the soil covering layers that fill the disposal pit 11 is three, but the number may be any number as long as it is two or more.

(6) In the above-described embodiment, the case where the sliding method is adopted as the method of moving the cover facility 12 has been described. Either method may be adopted.

DESCRIPTION OF SYMBOLS 1 ... Waste disposal site, 11 ... Disposal pit, 12 ... Cover facility, 13R ... Rail, 13L ... Rail, 14 ... Leachate treatment facility, 124 ... Sprinkling equipment, 511 ... Disposal pit, 512 ... Disposal pit, 521 ... Cover Facility 522: Cover facility.

Claims (3)

Covering a landfill section selected from a plurality of landfill sections of the disposal pit with a cover facility;
Landfilling waste having a predetermined thickness or less in the covered landfill area,
Covering the landfilled waste with a predetermined thickness in the covered landfill section with a predetermined thickness or less,
Moving the cover facility from a landfill where soil covering for waste was performed;
A step of stabilizing the waste without covering the waste buried in the landfill section where the cover facility was moved with an impermeable layer,
For each of the plurality of landfill sections, performing the covering step, the landfilling step, the covering step, the moving step, and the stabilizing step a plurality of times. The method according to claim 1, further comprising a step of installing an impermeable layer on the covering soil after the stabilizing step. For each of the unfilled landfill sections of the plurality of landfill sections, identifying at least one of the pH of the waste landfilled in the landfill sections and the degree of progress of organic matter decomposition,
Based on at least one of the specified pH and the degree of progress of organic matter decomposition, a landfill section to be newly covered by the cover facility moved in the moving step is selected from the unfilled landfill sections. The method for landfilling waste according to claim 1.

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