JP2005118663A - Volume-reduction treatment method for waste disposal site - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a volume-reduction method for a waste disposal site capable of enhancing workability by shortening a conveying distance between a sorting and volume-reduction device and an excavation section and a burying section of a reclaimed land. <P>SOLUTION: In the volume-reduction treatment method for the waste disposal place, a waste 5 dug out from the excavation sections 24A, 24B, 24C of the reclaimed land 1 is sorted and volume-reduced by the sorting and volume-reduction device 4 and the sorted and volume-reduced waste 15S, 22 is re-buried in the burying sections 25A, 25B, 25C of the reclaimed land 1. The sorting and volume-reduction treatment is carried out by moving a screen sorting device 6 or the like accompanying shift (24A→24B→24C) of the excavation section such that the screen sorting device 6 is not separated from the excavation section. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a volume reduction processing method in a waste disposal site.

  In recent years, the remaining capacity of waste disposal sites has become tight due to the high level of waste emissions and the decrease in the number of waste disposal sites that embed them, extending the life of waste disposal sites. Is desired. Therefore, the waste accumulated in the landfill is dug up, the waste that has been dug out is sorted out, the incombustible material such as the selected earth and sand is backfilled in the landfill, and the sorted combustible material is incinerated, melted and compressed. A method for reducing the volume of a waste disposal site by reducing the volume by, for example, backfilling to a landfill has been proposed (see, for example, Patent Document 1).

JP-A-9-150125

  In general, in the case of the volume reduction method of the waste disposal site as in the above prior art, the waste dug up from the landfill is transported to a sorting (volume reduction) device installed at a predetermined place by means of transport means such as a conveyor or a truck. Then, after sorting (volume reduction) processing, it is transported to the landfill by the transport means described above and backfilled. For this reason, the larger the disposal site (landfill) for volume reduction, the longer the transport distance between the excavation and buried sections and the sorting (volume reduction) device, and the labor and cost associated with the addition of conveyor equipment. Increased or increased labor for truck transportation has been a problem.

  The present invention has been made based on the above matters, and its purpose is to shorten the transport distance between the sorting / volume reducing device and the excavation section and the buried section of the landfill, and to improve the workability. It is to provide a volume reduction treatment method for a waste disposal site.

(1) In order to achieve the above object, according to the present invention, the waste excavated from the excavation section of the landfill is sorted and reduced by a sorting and volume reducing device, and the sorted and reduced volume waste is landfilled. In the volume reduction processing method of the waste disposal site to be backfilled in the landfill section,
In order to prevent the sorting apparatus from leaving the excavation section, the sorting apparatus is moved along with the movement of the excavation section to perform sorting / volume reduction processing.

  In the present invention, since the sorting device is moved along with the movement of the excavation section so as not to leave the excavation section of the landfill, the transport distance between the sorting device and the excavation section of the landfill can be shortened. Therefore, it is possible to reduce the labor of the conveying means such as the conveyor and the truck, and to improve the workability in reducing the volume of the waste disposal site.

  (2) In the above (1), preferably, the volume reduction process is performed by moving the volume reduction device along with the movement of the embedded section so that the volume reduction device is not separated from the embedded section.

  Thereby, the conveyance distance of the volume reduction apparatus and the burial section of a landfill can be shortened, and the workability | operativity in volume reduction of a waste disposal site can be improved.

  (3) In order to achieve the above object, the present invention also sorts and reduces the volume of waste that has been excavated from the excavation section of the landfill using a sorting and volume reduction device. In the volume reduction processing method of the waste disposal site to be backfilled in the buried section of the landfill, the sorting device is disposed so as to face the under conveyor for carrying out the small-size waste to the buried section side, and at least the sorting device The volume reduction device is arranged so that the input port comes near the discharge side of the over conveyor that discharges large-size waste, and the discharge conveyor comes to the buried section side, and as the excavation section and the buried section move, The sorting device and the volume reduction device are moved to perform sorting / volume reduction processing.

  ADVANTAGE OF THE INVENTION According to this invention, the conveyance distance of a sorting / volume reduction apparatus, the excavation division of a landfill, and a buried division can be shortened, and the workability | operativity in the volume reduction process of a waste disposal site can be improved.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view showing the entire structure of a landfill where one embodiment of a volume reduction processing method for a waste disposal site according to the present invention is implemented.

  In FIG. 1, reference numeral 1 denotes a substantially rectangular landfill having a deposition section 2 (depicted by oblique lines in the upper right in FIG. 1) where waste is deposited and an empty section 3 where waste is not deposited. Sorting that is arranged in the sedimentation section 2 of the landfill 1 and that sorts and reduces the volume of waste 5 (see FIG. 2 to be described later) excavated from the deposition section 2 by, for example, a known excavator for excavation (not shown).・ It is a volume reduction device.

  FIG. 2 is a plan view showing the arrangement configuration of the sorting / volume reduction device 4 as an example, and FIG. 3 is a side view showing the overall structure of the self-propelled screen sorting device as seen from the direction of arrow III in FIG. FIG. 4 is a side view showing the entire structure of the self-propelled crushing device viewed from the direction of arrow IV in FIG.

  2 to 4, reference numeral 6 denotes a self-propelled screen sorting device that sorts the excavated waste 5 by its size, and reference numeral 7 denotes an inlet (hopper) 8 of the self-propelled screen sorting device 6. For example, a self-propelled hydraulic excavator is provided with a gripping work tool (grapple) 7a for throwing in the waste 5, and 9 indicates waste (details will be described later) sorted by the self-propelled screen sorting device 6. A self-propelled crushing apparatus for crushing and reducing the volume, 10 has the same structure as the self-propelled hydraulic excavator 7 for charging, and is used for charging the waste into the inlet (hopper) 11 of the self-propelled crushing apparatus 9. For example, a self-propelled hydraulic excavator for loading provided with a gripping tool (grapple) 10a. The sorting / volume reducing device 4 includes the self-propelled screen sorting device 6, a loading self-propelled hydraulic excavator 7, a crushing device 9, and a loading self-propelled hydraulic excavator 10.

  The self-propelled screen sorting device 6 includes a screen sorting section (not shown in detail) that sorts, for example, three kinds of sizes of the input port 8 and the waste material 5 input to the input port 8 according to the size. For example, a structure that sorts the waste 5 by its size based on the comb gap size of the comb teeth arranged in a plurality of stages) 12 and the left and right provided below the screen sorting unit 12 Of the endless track track 13, 13 (only one of which is shown in FIG. 3) and the waste 15L having the largest particle size among the three types of waste sorted by the screen sorting unit 12. An over conveyor 16 that discharges, a middle conveyor 17 that discharges medium-sized waste 15M, and an under conveyor 18 that discharges the smallest granular waste 15S are provided.

  The small-size waste (for example, relatively small-size sediment) 15S is used as the cover of the landfill 1 and the medium-size waste 15M and the large-size waste 15L are self-propelled by the input hydraulic excavator 10. It is put into the type crusher 9 and crushed and reduced in volume. Although not shown, the medium-sized waste 15M and the large-sized waste 15L are subjected to, for example, selection of metals and plastics, compression reduction and incineration reduction by a known compression device and incinerator, for example. Also good.

  The self-propelled crusher 9 is provided below the crushing part 19, the crushing part 19 that crushes the large particle waste 15 </ b> L and the medium particle waste 15 </ b> M introduced into the charging inlet 11, and the crushing part 19. A traveling body 21 provided with left and right endless track shoes 20, 20 (only one 20 is shown in FIG. 4) and a carry-out conveyor 23 for discharging the waste 22 crushed and reduced in the crushing section 19 are provided. I have.

  In the sorting / volume reduction device 4 configured as described above, the excavated waste 5 is carried from the lower right side in FIG. 2 and accumulated, and the waste 15S that has been sorted / volume-reduced as described above, 22 are arranged so as to be carried out from the left side in FIG. Moreover, it arrange | positions so that the discharge | emission side of the under conveyor 18 of the self-propelled screen sorter 6 may face the below-mentioned burial section side (left side in FIG. 2), and the inlet 11 of the self-propelled crusher 9 is self-propelled screen sorter. In the vicinity of the discharge side of the over conveyor 16 of the apparatus 6, the discharge conveyor 23 is disposed so as to face the buried section side.

  Then, as shown in FIG. 1 described above, the carry-in side (bottom right side in FIGS. 1 and 2) of the sorting / volume-reducing device 4 and the excavation section 24A that digs up the waste 5 first (indicated by a two-dot chain line in FIG. 1). The burial is performed so that the waste 15S, 22 that has been subjected to the sorting / volume reduction processing and the sorting / volume-reducing device 4 are first backfilled. The sorting / volume-reducing device 4 is arranged in the deposition section 2 of the landfill 1 so as not to leave the section 25A (that is, the empty section 3).

  Next, the detailed procedure of the volume reduction processing method of the waste disposal site according to this embodiment will be described in three stages. FIG. 5 is a plan view showing the second stage of the landfill 1 where the volume reduction method of the waste disposal site according to the present embodiment is implemented, and FIG. 6 is a volume reduction of the waste disposal site according to the present embodiment. It is a top view showing the 3rd step of the landfill 1 where a processing method is implemented.

(1) First stage (see FIG. 1 above)
The excavation section 24A in the first stage of the landfill 1 is dug up by the excavating hydraulic excavator, and the excavated waste 5 is carried into the sorting / volume reduction device 4 by, for example, a truck or a conveyor (arrow A _{1 in} FIG. 1). reference). Then, the self-propelled screen sorter 6 sorts into three kinds of sizes, large-sized waste 15L, medium-sized waste 15M, and small-sized waste 15S, of which large-sized waste 15L and medium-sized waste 15M are classified. The volume is reduced by the self-propelled crusher 9. Waste 15S, 22 treated this sorting and compacting for example, by a wheel loader or the like (or be discharged directly from the self-propelled crushing device 9, etc.) backfilled unloaded in embedded sections 25A (see arrows in FIG. 1 B ₁₎ . When such an operation is repeated and the entire area of the excavation section 24A in the first stage is dug up, the process proceeds to the second stage.

(2) Second stage 24B is an excavation section in the second stage, and 25B is a buried section in which the first stage excavation section 24A is an empty section. First, the loading side (right side in FIG. 5) of the sorting / volume reducing device 4 and the excavation section 24B are not separated from each other, and the unloading side (lower side in FIG. 5) of the sorting / volume reducing apparatus 4 and the buried section 25B. The sorting / volume-reducing device 4 is arranged and moved so as not to be separated from each other (in this embodiment, the whole arrangement shown in FIG. 2 is rotated 90 degrees counterclockwise). The first stage similarly described above, the waste 5 dug up from the excavation compartment 24B is loaded into sorting and compacting device 4 (see arrows in FIG. 5 A _2), the self-propelled screen sorting device 6 and the self-propelled backfill unloaded waste 15S, 22 which are sorting and compacting treatment by crushing device 9 or the like embedded partition 25B (see arrow in FIG. 5 _{B 2).} When such an operation is repeated and the entire excavation section 24B in the second stage is dug up, the third stage is started.

(3) Third stage 24C is the excavation section in the third stage (in other words, the deposition section 2 in which the sorting / volume reduction device 4 was arranged in the second stage), and 25C is the above-mentioned excavation sections 24A and 24B are empty. It is a buried section that became a section. First, the sorting / volume reducing device 4 is arranged and moved to the second-stage embedded section 25B (shown by the upper left oblique line in FIG. 6). At this time, the carry-in side (right side in FIG. 6) of the sorting / volume reduction device 4 and the buried section 25C are set so that the carry-in side (upper side in FIG. 6) of the sorting / volume reduction device 4 is not separated from the excavation section 24C. The sorting / volume-reducing device 4 is arranged so as not to be separated from each other (in this embodiment, the entire arrangement shown in FIG. 2 described above is rotated 180 degrees). The first and similarly the second step described above, carries the waste 5 dug up from the excavation compartment 24C to the sorting and compacting device 4 (see arrow in FIG. 6 A _3), self-propelled screen sorting apparatus 6 and backfill unloaded waste 15S, 22 having been selected, volume reduction processing by the self-propelled crushing device 9 or the like embedded compartment 25C (see arrow in FIG. 6 B _3). When such operations are repeated and the entire excavation section 24C in the third stage is dug up and backfilled in the buried section 25C, the volume reduction process of the waste disposal site is completed.

  As described above, in the present embodiment, along with the movement of the excavation section (24A → 24B → 24C), the separation / volume reduction device 4 and the excavation sections 24A, 24B, 24C of the landfill 1 are not separated. The waste carrying side of the sorting / volume reducing device 4, that is, the self-propelled screen sorting device 6 is arranged and moved, and the sorting / volume reducing device 4 and the buried sections 25 </ b> A, 25 </ b> B, 25 </ b> C of the landfill 1 are not separated. As the buried section is moved (25A → 25B → 25C), the waste carry-out side of the sorting / volume reduction device 4, that is, the self-propelled crushing device is arranged and moved. Thereby, the conveyance distance between the sorting / volume reduction device 4 and the excavation sections 24A, 24B, 24C and the buried sections 25A, 25B, 25C of the landfill 1 can be shortened. Therefore, it is possible to reduce the labor of the conveying means such as the conveyor and the truck, and to improve the workability in reducing the volume of the waste disposal site.

It is a top view showing the 1st step of the landfill where one Embodiment of the volume reduction processing method of the waste disposal site of the present invention is enforced. It is a top view showing the arrangement composition of the sorting and volume reduction device for explaining one embodiment of the volume reduction processing method of the waste disposal site of the present invention. It is the side view seen from the arrow III direction in FIG. It is the side view seen from the arrow IV direction in FIG. It is a top view showing the 2nd step of the landfill where one Embodiment of the volume reduction processing method of the waste disposal site of the present invention is enforced. It is a top view showing the 3rd step of the landfill where one Embodiment of the volume reduction processing method of the waste disposal site of this invention is implemented.

Explanation of symbols

1 Landfill 4 Sorting / Volume reduction device 5 Waste 6 Self-propelled screen sorting device (sorting device)
9 Self-propelled crusher (volume reduction device)
11 inlet 15L large particle size waste 15S small particle size waste 16 over conveyor 18 under the conveyor 22 Waste 23 out conveyor 24A, 24B, 24C excavation sections 25A, 25B, 25C embedded sections _{A 1,} A 2, _{A 3} carry-in path B ₁ , B ₂ , B ₃ carry-out route

Claims (3)

Waste that has been excavated from the excavation section of the landfill is sorted and volume-reduced by a sorting / volume-reducing device, and the waste that has been sorted and volume-reduced is backfilled in the landfill section of the landfill. In the method
A volume reduction treatment method for a waste disposal site, wherein the sorting apparatus is moved along with the movement of the excavation section so that the sorting apparatus is moved away from the excavation section to perform sorting / volume reduction processing. .   2. The volume reduction treatment method for a waste disposal site according to claim 1, wherein the volume reduction device is moved along with the movement of the buried section so that the volume reduction device is not separated from the buried section. A volume reduction processing method for a waste disposal site, characterized by being performed. Waste that has been excavated from the excavation section of the landfill is sorted and volume-reduced by a sorting / volume-reducing device, and the waste that has been sorted and volume-reduced is backfilled in the landfill section of the landfill. In the method
The sorting device is arranged so that an under conveyor for carrying out small-sized waste is directed to the buried section side, and at least an input port is provided in the vicinity of the discharge side of the over-conveyor for discharging large-size waste of the sorting device. Place the volume reduction device so that the discharge conveyor comes to the buried section side,
A volume reduction processing method for a waste disposal site, wherein the sorting apparatus and the volume reduction apparatus are moved in accordance with the movement of the excavation section and the buried section, and the sorting / volume reduction processing is performed.

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