JP5707717B2 - Waste landfill disposal method - Google Patents

Description

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

  When landfilling waste in a waste disposal site, various gases such as methane gas, hydrogen gas, and hydrogen sulfide gas are generated from the landfilled waste, and the gas diffuses to the surrounding area to contaminate the surrounding environment. In addition, rainwater falls on the landfilled waste, and the rainwater penetrates into the ground through the waste, so that a harmful substance contained in the waste is mixed into the groundwater and causes a problem of contaminating the groundwater.

  For this reason, in recent years, disposal pits (hereinafter referred to as pits) at waste disposal sites are covered with a movable or fixed roof to prevent various gases generated from waste in the pits from diffusing around. In addition, a closed waste disposal site (indoor waste disposal site) configured to prevent rainwater from falling into the waste in the pit and prevent harmful substances contained in the waste from entering the groundwater Has been built.

  An indoor waste disposal site using a mobile roof has multiple pits in the waste disposal site, and only the pits that are being disposed of in landfills are covered with the mobile roof, and the pits are filled with waste. Later, by repeatedly moving the movable roof from that pit to the next unused pit, rainwater is prevented from entering the pit during landfill disposal. An indoor waste disposal site using a fixed roof is provided with a large-capacity pit in the waste disposal site, and the entire pit is covered with a circular dome-shaped roof or the like.

  By the way, in an indoor waste disposal site using a mobile roof, when a plurality of pits are provided two-dimensionally, a rail is laid between a plurality of pits arranged in one direction, so that the mobile waste disposal site The movement of the roof in one direction only can be done with rails, but the movement in the other direction must be done with a crane. Furthermore, when multiple pits are provided, it is necessary to install a partition wall that can withstand the pressure of the waste landfilled between adjacent pits. The capacity that can be landfilled will be reduced.

  In addition, in the case of an indoor waste disposal site using a fixed roof, there is no problem like the indoor waste disposal site using the above-mentioned mobile roof, but to deal with a large capacity pit. In addition, for example, a large circular dome-shaped roof having a long span is required, and the construction thereof requires a great deal of labor, time and cost.

  On the other hand, in Patent Document 1, a circular pit is divided into a plurality of partitions by a partition wall, and a fan-shaped roof is bridged between a rail provided at the center of the pit and a rail provided at the peripheral edge of the pit. The sectoral roof can be moved along the rail, and after one section is filled with waste, the sectoral roof is moved to the next section along the rail to landfill waste in the next section. An indoor waste disposal site is described that is configured so that waste is disposed of in a plurality of sections by repeating such operations.

JP 2001-145858 A

  In the indoor waste disposal site described in Patent Document 1, it is not necessary to lay a large circular dome-shaped roof covering the entire circular pit, which requires a great amount of labor, time and cost for construction. However, since the circular pits are divided into a plurality of partitions by the partition walls, the volume of the circular pits is reduced by the amount of the partition walls, and the capacity for waste reclamation is reduced.

  It is an object of the present invention to provide a waste landfill disposal method that can reduce the labor, time, and cost required for construction and can increase the volume of waste that can be landfilled.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a method for landfill disposal of waste in an indoor waste disposal site having a disposal pit formed in a circular shape for landfill disposal of waste, and a movable roof provided above the disposal pit. The disposal pit is divided into a plurality of fan-shaped landfill sections in the circumferential direction, and the movable roof formed in a fan shape having a size covering the top of each section is placed above any of the landfill sections. After moving and covering the upper part of the compartment, in this state, after performing a step of filling the waste with a predetermined height so that the waste does not collapse , the surface of the waste buried in the compartment is impermeable to water. covering in means, said movable roof is moved above the next landfill compartment cover over the compartment, in this state, by repeating the step of filling up the waste by the predetermined height in the compartment, waste sequentially in each compartment, Serial landfill disposed of predetermined portions heights stepwise multistage, only in the circumferential direction on both sides of the movable roof, shields the sides of the compartment upper is covered by the movable roof, the interior of said compartment A shielding member for preventing rainwater from entering is provided.

According to the waste landfill disposal method of the present invention, while moving the fan-shaped mobile roof, the waste is buried in multiple stages in the circular disposal pit portion below the mobile roof. Compared to the case where the entire pit is covered with a roof, the time, labor, and cost required to install the movable roof can be reduced.
In addition, since only the upper part of the landfill section of the disposal pit needs to be covered with a mobile roof, the time, labor, and cost required for installation of the mobile roof can be reduced compared to the case where the entire disposal pit is covered with a roof. Can be reduced.
In addition, the mobile roof covers the upper part of the landfill section, and the both sides of the mobile roof in the circumferential direction can be shielded by the shielding members on both sides in the circumferential direction , thus preventing rainwater from entering the landfill section. it can.

Further, the present invention is a landfill disposal method for waste in an indoor waste disposal site having a disposal pit for landfilling waste, and a movable roof provided above the disposal pit , wherein the disposal pit Among the plurality of sections formed in the section, a step of reclaiming waste in a section located below the mobile roof by a predetermined height at which the waste does not collapse, and the mobile roof of the section adjacent to the section And repeating the step of moving upwards, so that the waste is sequentially filled into the compartments in stages at the predetermined height in stages, so as to straddle the boundaries of the already disposed lower waste compartments. It is characterized by landfilling the upper waste.

  Furthermore, in the present invention, the disposal pit is formed in a circular shape, and the inside of the disposal pit is partitioned into a plurality of fan-shaped landfill sections in the circumferential direction, and is disposed in a plurality of stages at a predetermined height in each section. While a thing is reclaimed, the said movable roof is good also as being formed in the fan shape of the magnitude | size which covers the upper direction of each said division.

  According to the waste landfill disposal method of the present invention, while moving the movable roof between adjacent landfill sections, the landfill is sequentially landfilled at a predetermined height with respect to the landfill section of the disposal pit. As a result, it becomes possible to dispose of waste in the entire disposal pit.

As described above, according to the waste landfill disposal method of the present invention, waste is buried in multiple stages in the disposal pit portion below the mobile roof, so that the entire disposal pit is covered with the roof. The time, labor, and cost required for installing a movable roof can be reduced compared to the conventional type.
In addition, since only the upper part of the landfill section of the disposal pit needs to be covered with a mobile roof, the time, labor, and cost required for installation of the mobile roof can be reduced compared to the case where the entire disposal pit is covered with a roof. Can be reduced.
In addition, since the waste landfilled in the landfill section in the disposal pit does not collapse to the adjacent section side, there is no need to install a partition wall between the adjacent landfill sections, and the volume of the disposal pit is only as much as the partition wall. The volume that can be disposed of in landfill can be increased.

It is the schematic which showed the whole indoor waste disposal site where one Embodiment of the waste landfill disposal method by this invention is applied. It is a schematic diagram of the indoor waste disposal site of FIG. It is explanatory drawing which showed the state which divided the disposal pit of the indoor waste disposal site of FIG. 2 into four landfill divisions, and divided each division into 3 steps | paragraphs by predetermined height. It is explanatory drawing which showed the state which carried out the landfill disposal of the waste in the 1st step | paragraph of a landfill division. It is explanatory drawing which showed the positional relationship of the waste and the movable roof which carried out the landfill disposal to the 1st step | level of each landfill division. It is explanatory drawing which showed the modification of the landfill disposal of a waste.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6 show an embodiment of a waste disposal method according to the present invention.
The waste landfill disposal method of the present embodiment is applied to a closed waste disposal site (indoor waste disposal site) in which the upper part of a disposal pit for landfilling waste is covered with a movable roof.

  As shown in FIG. 1, the indoor waste disposal site has a circular disposal pit (hereinafter referred to as pit 1) having an open ground surface, and a cylindrical center pole erected in the center of the pit 1 Part 2, an annular rail 3 laid around the opening periphery of pit 1 to surround the opening of pit 1, and a fan-shaped movable roof 4 bridged between center pole part 2 and rail 3 And a drive source (not shown) for moving the movable roof 4 along the rails 3 and a crane 21 installed so as to be able to turn around the center pole portion 2.

  The movable roof 4 is, for example, a frame 5 formed by assembling a steel frame or the like in a plan view fan shape, and a sheet or plate shape such as a metal or a synthetic resin provided so as to cover the outer surface of the frame 5. The roof plate 6, the bearing 7 that rotatably supports the center portion of the movable roof 4 on the upper portion of the center pole portion 2, and the arc-shaped peripheral edge portion of the movable roof 4 are movably supported on the upper portion of the rail 3. The movable roof 4 can be turned around the center pole portion 2 in the circumferential direction of the pit 1 by rotating the wheel 8 with a driving source.

  The movable roof 4 is formed slightly larger than the landfill sections 11 to 14 of the pit 1 described later. For example, as shown in FIG. 2, when the pit 1 is divided into four equal parts, that is, the pit 1 is divided into four fan-shaped landfill sections (first to fourth sections 11 to 14) having a central angle of 90 °. In the case of partitioning, the size of the fan-shaped roof 4 is set so that the central angle of the movable roof 4 is about 110 °. By setting the movable roof 4 to such a size, when the movable roof 4 is moved to the upper part of each section 11-14, the both ends of the circumferential direction of the movable roof 4 are made to each section 11-14. Since it can be located outward rather than the both ends of the circumferential direction of this, the whole upper direction of each division 11-14 can be covered.

  As shown in FIG. 2, sheet-like or plate-like shielding members 9 are suspended from both ends of the movable roof 4. The shielding member 9 is formed in a size capable of shielding both end surfaces in the circumferential direction of the respective sections 11 to 14, and the both end surfaces in the circumferential direction of the respective sections 11 to 14 are formed by the shielding member 9 and the movable roof 4. The upper surface is blocked, and rainwater can be prevented from entering each of the sections 11 to 14.

  In the present embodiment, as shown in FIG. 3, each of the first to fourth sections 11 to 14 is divided into a plurality of stages (three stages in the present embodiment) by a predetermined height, and the movable roof 4 The waste is sequentially landfilled while being moved above the landfill sections 11 to 14. That is, the first stage 11a of the first section 11 → the first stage 12a of the second section 12 → the first stage 13a of the third section 13 → the first stage 14a of the fourth section 14 → the second stage of the first section 11 11b → second stage 12b of the second section 12 …… third stage 11c of the first section 11 → third stage 12c of the second section 12 → third stage 13c of the third section 13 → three stages of the fourth section 14 The waste 15 is landfilled in the order of the eyes 14c. The detailed landfill operation procedure is as follows.

  That is, first, as shown in FIG. 2, the movable roof 4 is moved above the first section 11, the upper portion of the first section 11 is covered with the movable roof 4, and both ends in the circumferential direction of the first section 11 are covered. The surface is covered with a shielding member 9 to prevent rainwater from entering the inside of the first section 11 from the outside. In this state, as shown in FIG. 1, the dump truck 20 loaded with the waste 15 is carried into the peripheral edge of the opening of the pit 1 and the crane 21 for carrying the waste is operated to load the dump truck 20. The waste 15 is received from the bucket 22 and the waste 15 is carried into the first stage 11a (see FIG. 4) of the first section 11 through the bucket 22 or directly from the loading platform of the dump truck 20. To do.

  In this case, as shown in FIG. 5, the first step 11a is such that the boundary surface 15a of the waste 15 in the first step 11a of the first section 11 and the second section 12 becomes an inclined surface 15a of a predetermined angle. The waste 15 is disposed of in landfill. Further, the waste 15 is placed on the first stage 11a so that the shielding members 9 at both ends in the circumferential direction of the movable roof 4 are vertically arranged on the slope of the inclined surface 15a of the waste 15 of the first stage 11a. Landfill. As a result, it is possible to prevent the waste 15 landfilled in the first stage 11a from collapsing down to the second section 12 side, so that it is not necessary to provide a partition wall between the first section 11 and the second section 12; It is possible to prevent rainwater from falling on the waste 15 buried in the first stage 11a.

  And after the 1st step 11a of the 1st division 11 is reclaimed to the predetermined height with the waste 15, the surface of the waste 15 is covered with a water-impervious means (water-impervious sheet, covering soil, etc.). After preventing rainwater from falling on the waste 15 of the first stage 11a, as shown in FIG. 5, the movable roof 4 is moved from above the first section 11 to above the second section 12, The upper part of the second section 12 is covered with the movable roof 4, and the shielding member 9 on the front side in the circumferential direction of the movable roof 4 is vertically arranged on the end face on the front side in the circumferential direction of the second section 12. The shielding member 9 on the rear side in the circumferential direction of the roof 4 is placed on the end surface on the rear side in the circumferential direction of the second section 12 (on the shoulder of the inclined surface 15a of the waste 15 in the first stage 11a of the first section 11). Arranged vertically, secondly, both end surfaces of the partition 12 in the circumferential direction are shielded by the shielding member 9.

Then, similarly to the first stage 11a of the first section 11, the waste 15 is disposed of in the first stage 12a of the second section 12 continuous with the first stage 11a of the first section 11.
In this case, the portion of the waste 15 in the first stage 12a of the second section 12 on the first stage 11a side of the first section 11 is set to the boundary surface 15a (inclined) of the waste 15 in the first stage 11a of the first section 11. The waste 15 of the first stage 11a of the first section 11 and the waste 15 of the first stage 12a of the second section 12 are integrated by lapping with the surface 15a).

  Further, the waste 15 is disposed on the first stage 12a of the second section so that the boundary surface 15a between the waste 15 of the first stage 12a of the second section 12 and the third section 13 becomes an inclined surface 15a having a predetermined angle. Is disposed of in a landfill to prevent the waste 15 disposed in the first stage 12a of the second section 12 from collapsing to the third section 13 side.

  Furthermore, the first stage so that the shielding member 9 on the front side in the circumferential direction of the movable roof 4 is arranged vertically on the boundary surface 15a (inclined surface 15a) of the waste 15 of the first stage 12a. The waste 15 is disposed of in landfill 12a. Thereby, it is possible to prevent rainwater from falling on the waste 15 buried in the first stage 12a.

  Then, after the first stage 12a of the second section 12 is filled with the waste 15 to a predetermined height, the surface of the waste 15 is covered with a water shielding means, and rainwater falls on the waste 15 of the first stage 12a. As shown in FIG. 5, the movable roof 4 is moved from above the second section 12 to above the third section 13, and the upper portion of the third section 13 is covered with the movable roof 4. The shielding member 9 on the front side in the circumferential direction of the movable roof 4 is arranged vertically on the end surface on the front side in the circumferential direction of the third section 13, and the shielding member 9 on the rear side in the circumferential direction of the movable roof 4 is arranged. Arranged vertically on the rear end face in the circumferential direction of the third section 13 (on the shoulder of the inclined surface 15a of the waste 15 of the first stage 12a of the second section 12), and thirdly in the circumferential direction of the section 13 The both end surfaces of are shielded by the shielding member 9.

  Then, similarly to the first stage 12 a of the second section 12, the waste 15 is disposed of in the first stage 13 a of the third section 13 that is continuous with the first stage 12 a of the second section 12. Similarly, while moving the movable roof 4, the waste 15 is landfilled in the first stage 14 a of the fourth section 14.

  In this way, after the waste 15 is landfilled in the first stages 11a to 14a of the sections 11 to 14 of the pit 1, the waste 15 is sequentially landfilled to the second stages 11b to 14c of the sections 11 to 14. In addition, the waste 15 can be landfilled in the entire pit 1 by sequentially landfilling the waste 15 in the third stages 11 c to 14 c of the sections 11 to 14.

  In the waste landfill disposal method of the present embodiment configured as described above, the circular pit 1 is partitioned into four landfill sections (first to fourth sections 11 to 14), and each section 11 Since each of -14 is divided into three stages at a predetermined height, and the movable roof 4 is moved above the landfill sections 11-14, the waste 15 is buried in each section 11-14. A large circular dome-shaped roof covering the entire pit 1 is not necessary. Therefore, since the small movable roof 4 is sufficient, the time, labor, and cost required for installing the movable roof 4 can be greatly reduced.

  In addition, each of the sections 11 to 14 is divided into three stages each having a predetermined height (a height at which the waste 15 does not collapse), and the waste 15 is disposed of in each of the sections 11 to 14. Since the boundary surface 15a with each adjacent section 11-14 of the waste 15 of each step is formed on the inclined surface 15a of a predetermined angle (the inclined surface 15a of the angle at which the waste 15 does not collapse), each of the sections 11-14. There is no case where the waste 15 of each stage collapses toward the adjacent sections 11 to 14. Therefore, since it is not necessary to install a partition wall between the adjacent sections 11 to 14, the volume of the pit 1 can be increased, and the volume capable of landfill disposal of the waste 15 can be increased.

  Further, in the case where a plurality of pits 1 are provided in the waste disposal site, after the landfill disposal of the waste 15 in any pit 1 is completed, the mobile roof 4 is moved to the next by using a crane or the like. By moving to the pit 1, the landfill disposal of the waste 15 can be similarly performed on the next pit 1, so that various shapes can be obtained without being affected by the shape of the installation site of the waste disposal site. The present invention can be applied to a waste disposal site installed at the installation site.

  In the above description, the pit 1 is divided into four fan-shaped landfill sections (first to fourth sections 11 to 14), each of the sections 11 to 14 is divided into three stages, and the movable roof 4 is While the waste 15 is sequentially landed in each of the sections 11 to 14 while being moved above the landfill target sections 11 to 14, the pit 1 is divided into two or more, and each section is divided into two or more stages. It may be configured so that waste is buried in each section.

  In the above description, the waste 15 buried in the first stage 11a of the first section 11 and the waste 15 buried in the first stage 12a of the second section 12 are wrapped, as shown in FIG. As described above, the waste 15 buried in the first stage 11 a of the first section 11, the waste 15 buried in the first stage 12 a of the second section 12, and the waste 15 buried in the first stage 12 a of the second section 12. And the waste 15 buried in the first stage 13a of the third section 13 without wrapping, the waste 15 of the first stage 11a of the first section 11 and the waste 15 of the first stage 12a of the second section 12 Waste 15 of the first stage 11a of the first section 11 so as to straddle the boundary between the waste 15 of the first stage 12a of the second section 12 and the waste 15 of the first stage 13a of the third section 13 And the upper part of the waste 15 of the first stage 12a of the second section 12, and the second section Waste 15 on top of the waste 15 of the first stage 13a of the waste 15 and the third compartment 13 of the second first stage 12a landfill may be disposed so as to laminate.

  Further, in the above description, the first stage 11a of the first section 11 → the first stage 12a of the second section 12 → the first stage 13a of the third section 13 → the first stage 14a of the fourth section 14 → first The waste 15 was sequentially disposed of in the landfill as in the second stage 11b of the section 11, but the first stage 11a of the first section 11, the second section 12, the third section 13, and the fourth section 14 in any order. 12a, 13a, 14a, second stage 11b, 12b, 13b... The third stage 11c, 12c, 13c.

  Furthermore, in the above description, the present invention is applied to the circular pit 1, but the present invention may be applied to pits having other shapes such as a rectangle. When the present invention is applied to a rectangular pit, the pit is divided into a plurality of landfill sections in the longitudinal direction or the width direction, and the movable roof is discarded in each section while moving in the longitudinal direction or the width direction of the pit. You can dispose of the landfill.

  Furthermore, in the above description, each of the sections 11 to 14 is divided into three stages each having a height at which the waste 15 does not collapse, and the waste 15 is landfilled in each of the sections 11 to 14. Although the boundary surface with each adjacent section 11-14 of waste 15 of each step was formed in the inclined surface of the angle which waste 15 does not collapse, PC concrete board etc. between adjacent sections 11-14, 11-14 A simple partition member may be installed so that the waste 15 of each stage of each section 11-14 does not collapse into the adjacent sections 11-14.

DESCRIPTION OF SYMBOLS 1 Pit 2 Center pole part 3 Rail 4 Mobile roof 5 Frame 6 Roof board 7 Bearing 8 Wheel 9 Shield member 11 1st division 11a 1st stage 11b 2nd stage 11c 3rd stage 12 2nd division 12a 1st stage 12b 2 Stage 12c 3rd Stage 13 3rd Section 13a 1st Stage 13b 2nd Stage 13c 3rd Stage 14 4th Section 14a 1st Stage 14b 2nd Stage 14c 3rd Stage 15 Waste 15a Boundary Surface 20 Dump Truck 21 Crane 22 bucket

Claims (2)

It has a disposal pit formed in a circular shape for landfill disposal of waste, and is a landfill disposal method of waste in an indoor waste disposal site provided with a movable roof above the disposal pit,
Dividing the disposal pit into a plurality of fan-shaped landfill sections in the circumferential direction ;
Wherein said movable roof which is formed in a fan shape of the upper covering size of each section is moved upwards either reclaimed compartment cover over the compartment, in this state, the waste into the compartment After carrying out the process of landfilling only a predetermined height where waste does not collapse ,
Covers the surface of the waste landfill in the compartment with water blocking means, the movable roof are moved above the next landfill compartment cover over the compartment, in this state, the waste into the compartment By repeating the process of landfilling at a predetermined height, waste is sequentially disposed of in a multistage manner in stages with the predetermined height ,
Only on both sides of the movable roof in the circumferential direction, shielding members are provided that shield both sides of the section covered with the movable roof and prevent rainwater from entering the section. A landfill disposal method for waste. It has a disposal pit for landfill disposal of waste, and is a method for landfill disposal of waste in an indoor waste disposal site provided with a movable roof above the disposal pit,
Reclaiming waste in a section located below the movable roof by a predetermined height that prevents the waste from collapsing ;
By moving the movable roof above the section adjacent to the section, and sequentially reclaiming waste in each section step by step at a predetermined height , and at that time, the landfill has already been performed. A method for landfill disposal of waste, characterized by landfilling the upper waste so as to straddle the boundary of the lower waste compartment.

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