JP2005111318A - Volume reduction system for waste disposal place and volume reduction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a volume reduction system for a waste disposal place capable of carrying out excavation work and final backfil work of an enormous range of a reclaimed land without changing arrangement of a sorting (volume reduction) device. <P>SOLUTION: The volume reduction system has a first multi-joint type conveyor 3 capable of moving a throwing port 5 for the dug up waste 2a accompanying with movement of a range of excavation work of the reclaimed land 1; a hydraulic shovel 6 for magnetic sorting for sorting and removing an iron scrap 8 or the like from the waste 2b conveyed by the first multi-joint type conveyor 3; a screen sorting device 9 for sorting the waste 2b obtained by sorting and removing the iron scrap 8 or the like to, for example, three kinds of wastes 21L, 21M, 21S corresponding to the size; and a second multi-joint type conveyor 25 for conveying the sorted/treated waste 21S and the wastes 21M, 21L subjected to volume reduction after the sorting and capable of moving a chute 7 at a discharge side accompanying with movement of a range of the final backfil work of the reclaimed land 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a volume reduction system and a volume reduction method for a waste disposal site, and more particularly, a volume reduction system for a waste disposal site that efficiently performs excavation work and backfilling work in a wide range of landfill sites. And a volume reduction method.

  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, excavate the landfill waste at the disposal site, sort out the excavated waste, backfill the incombustible material such as selected earth and sand to the landfill, and reduce the volume of the combustible material selected by incineration. A method for reducing the volume of a waste disposal site by backfilling in a landfill has been proposed (see, for example, Patent Document 1).

JP-A-9-150125

  However, there are the following problems in the above-described prior art.

That is, for example, when excavation work is performed in a large landfill with a capacity of about 2 million m ³ , the excavation work range and the sorting (volume reduction) device for sorting (volume reduction) are separated from each other. The waste must be transported to a sorting (volume reduction) device, for example, by a dump truck or a conveyor. However, in a dump truck, the longer the conveyance distance, the harder it is to move and the work efficiency has been reduced. In general conveyors, the sorting (volume reduction) device may be rearranged as the excavation work range moves, and work efficiency is reduced.

  Similarly, when the backfilling operation is performed after sorting (reducing) the waste that has been dug up, the sorting (volume reduction) device for sorting (reducing) the waste is separated from the backfilling location. Therefore, it must be conveyed by a dump truck or a conveyor. When transporting on a conveyor or the like, it becomes necessary to move the sorting (volume reduction) device, re-install the conveyor device, or add a new conveyor device as the landfill site moves. The efficiency was decreasing.

  An object of the present invention is to provide a volume reduction system and a volume reduction in a waste disposal site that can efficiently perform excavation work and backfill work in a large area of a landfill without rearranging a sorting (volume reduction) device. It is to provide a conversion method.

  (1) In order to achieve the above object, the volume reduction system for a waste disposal site according to the present invention is configured such that the input port of the excavated waste can move along with the movement of the excavation work range of the landfill. 1 articulated conveyor, a sorting device for sorting waste conveyed by the first articulated conveyor, waste sorted by the sorting device and waste reduced in volume It has a second articulated conveyor that transports and can move its discharge side along with the movement of the reclaiming work range of the landfill.

  In the present invention, the waste that has been dug from the landfill is transported to the sorting device using the first articulated conveyor whose input port is movable as the excavation work range of the landfill moves. At this time, the first articulated conveyor can easily change the arrangement of the inlets while fixing the arrangement on the discharge side. Therefore, excavation work for a wide range of landfills without changing the sorting device arranged on the discharge side of the first articulated conveyor and changing the arrangement of the inlets of the first articulated conveyor. It can be performed.

  In addition, using the second articulated conveyor whose discharge side can move with the movement of the reclaiming work range of the landfill, the waste sorted by the sorting device and the waste reduced in volume are collected. Transport it and back it to the landfill. At this time, the second articulated conveyor can easily change the arrangement on the discharge side while fixing the arrangement of the inlets. Therefore, without changing the sorting (volume reduction) device arranged on the inlet side of the second articulated conveyor, the predetermined position of the landfill is changed while changing the arrangement on the discharge side of the second articulated conveyor. The backfilling operation can be performed by selecting the position.

  (2) In order to achieve the above object, the volume reduction system of the waste disposal site of the present invention includes a sorting device for sorting waste, and a sorting device for sorting waste generated from a landfill. In the case of transporting to the landfill, when the excavation work range of the landfill is moved, the input port can be moved, and when the waste sorted and volume-reduced by the sorting device is transported, A common articulated conveyor that can move on its discharge side as the ground backfilling range moves.

  In the present invention, when transporting waste excavated from a landfill to a sorting device and when transporting waste sorted and volume-reduced by the sorting device, a common articulated type Use a conveyor. At this time, the shared articulated conveyor can easily change the placement of the inlets while fixing the discharge side arrangement when transporting the excavated waste to the sorting device. When transporting waste that has been subjected to sorting processing and volume reduction processing by the apparatus, it is possible to easily change the placement on the discharge side while fixing the placement of the inlet. Therefore, similarly to the above (1), excavation work and backfill work in a large area of the landfill can be efficiently performed without rearranging the sorting (volume reduction) device. Further, compared to the above (1), the number of articulated conveyors is reduced, and the cost can be reduced.

  (3) In the above (1) or (2), preferably, the multi-joint type conveyor is provided so as to be able to turn on a traveling body on which the charging side can self-run.

  (4) In order to achieve the above object, the volume reduction method of the waste disposal site according to the present invention is a first articulated type in which the inlet can be moved along with the movement of the excavation work range of the landfill. After the waste excavated from the landfill is transported by the conveyor, the transported waste is sorted by the sorting device, then the volume is reduced, and the discharge side moves as the landfill work area of the landfill moves. The possible second articulated conveyor conveys the sorted and volume-reduced waste and backfills the conveyed waste to the landfill.

  (5) In order to achieve the above object, the volume reduction method of the waste disposal site according to the present invention is a common articulated type in which the input port can be moved in accordance with the movement of the excavation work range of the landfill. After the waste excavated from the landfill is transported by the conveyor, the transported waste is sorted by the sorting device, and then the volume is reduced. The shared and articulated conveyor that can be used transports the waste that has been sorted and volume-reduced, and backfills the transported waste to the landfill.

  According to the present invention, it is possible to perform excavation work and backfill work in a wide range of landfills without rearranging the sorting (volume reduction) device, so that waste volume reduction processing can be performed efficiently. Can do.

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

  FIG. 1 is a plan view showing a schematic configuration of an embodiment of a volume reduction system for a waste disposal site according to the present invention, and FIG. 2 is an overall structure of an articulated conveyor viewed from the direction of arrow II in FIG. FIG. 3 is a side view showing the overall structure of the screen sorting apparatus as seen from the direction of arrow III in FIG.

  1 to 3, reference numeral 1 denotes a landfill site of a target waste disposal site, and 2a is excavated from the landfill site 1 by, for example, a excavating hydraulic excavator or the like (not shown) equipped with an excavation work tool and accumulated. 3 is a first articulated conveyor for conveying the excavated waste 2a, and 4 is an inlet (hopper) 5 for the first articulated conveyor 3. For example, a loading hydraulic excavator provided with a gripping work tool (grapple) 4a for charging the waste 2a into the waste 2a is provided from a chute 7 on the discharge side (right side in FIG. 1) of the first articulated conveyor 3. For example, a magnetic sorting hydraulic excavator provided with a magnetic adsorption machine (lifting magnet) 6a for sorting and removing iron scraps 8 and the like from the discharged waste 2b. Select 2b by its size The screen sorting apparatus 10 has a structure similar to that of the loading excavator 5, and includes, for example, a gripping work tool (grapple) 10 a for feeding the waste 2 b into the loading port (hopper) 11 of the screen sorting apparatus 9. This is a loading hydraulic excavator.

  The first multi-joint type conveyor 3 is configured by, for example, three substantially linear belt conveyors 12A, 12B, and 12C (for example, conveyance distances of about 20 m to 30 m) that are rotatably connected. These belt conveyors 12A, 12B, and 12C are respectively provided so as to incline upward from the charging port 5 side (left side in FIG. 2) to the chute 7 side (right side in FIG. 2), and the waste 2a that has been input to the charging port 5 Are conveyed in the order of the belt conveyors 12A, 12B, 12C and discharged from the chute 7. Between the discharge side of belt conveyor 12A (right side in FIG. 2) and the receiving side of belt conveyor 12B (left side in FIG. 2), and between the discharge side of belt conveyor 12B and the receiving side of belt conveyor 12C. A member or the like (not shown) for assisting the delivery of the waste 2a may be provided.

  Further, for example, substantially cylindrical conveyor supports 13A, 13B, and 13C are provided at the lower discharge side of the belt conveyors 12A, 12B, and 12C. The conveyor supports 13A and 13B receive the belt conveyors 12B and 12C, respectively. The sides are pivotally connected. Further, wheels 14 are provided below the conveyor supports 13A and 13B, respectively, and the inlet 5 side of the conveyor support 13C and the belt conveyor 12A includes, for example, left and right endless track shoes 15 and 15 respectively. It is provided on the traveling body 16 so as to be able to turn through a turning device (turning wheel) 17 and is capable of self-propelling. For example, a radio signal corresponding to the operation lever is received from a remote operation device (not shown) provided with an operation lever (not shown) that can be operated by the operator, and the turning device 17 is received according to the radio signal. Is driven to turn the traveling body 16 or the traveling body 16 is driven to travel. Thereby, for example, the arrangement of the insertion port 5 can be easily changed while fixing the arrangement of the chute 7 of the first articulated conveyor 3.

  The screen sorting device 9 includes a screen sorting unit (for example, although not shown in detail, for example) that sorts the input port 11 and the waste 2b charged into the input port 11 into, for example, three types of sizes. A structure for sorting the waste 2b based on the size of the comb teeth of the comb teeth arranged in a plurality of stages 18) and the left and right endless tracks provided below the screen sorting section 18 The traveling body 20 provided with the footwear 19, 19 (only one 19 is shown in FIG. 3) and the overflow that discharges the waste 21L having the largest particle size out of the three types of waste sorted by the screen sorting section 18 A conveyor 22, a middle conveyor 23 that discharges medium-sized waste 21M, and an under conveyor 24 that discharges the smallest granular waste 21S are provided.

  Then, the small-sized waste (for example, relatively small-sized sediment) 21S is used as covering soil for the landfill 1 and the medium-sized waste 21M and the large-sized waste 21L are reduced in volume by a volume reduction device (not shown). The As this type of volume reduction device, there are known compression devices for compressing and reducing, such as a compression device for reducing the volume, a melting and solidifying device for compressing and reducing by heating and softening, and an incinerator for reducing the volume by incineration.

  Reference numeral 25 denotes a second multi-joint type conveyor for transporting the small-size waste 21S (or medium-size waste 21M and large-size waste 21L whose volume has been reduced), and 26 denotes a second multi-joint type conveyor. For example, it is a wheel loader for feeding small-size waste 21S or the like into 25 loading ports 5.

  The second articulated conveyor 25 has, for example, the same structure as the first articulated conveyor 3 (see FIG. 2 described above), and three substantially linear belt conveyors 12A, 12B, and 12C rotate. It is configured to be connected. The small granular waste 21S and the like charged into the charging port 5 are conveyed in the order of the belt conveyors 12A, 12B, and 12C and discharged from the chute 7.

  Similarly to the first articulated conveyor 3, the second articulated belt conveyor 25 is provided with wheels 14 below the conveyor supports 13A and 13B, and the conveyor support 13C and the belt conveyor 12A are loaded. The mouth 5 side is provided so as to be able to turn through a turning device 17 on a traveling body 16 provided with left and right endless track shoes 15, 15, etc., respectively, and is capable of self-running. A radio signal corresponding to the operation lever from the remote control device is received, and the turning device 17 is driven in response to the radio signal so that the traveling body 16 turns or the traveling body 16 is driven to travel. It has become. Thereby, for example, the arrangement of the chute 7 can be easily changed while fixing the arrangement of the insertion ports 5 of the second articulated conveyor 25.

  Next, the volume reduction method of the waste disposal site according to this embodiment will be described.

In order to reduce the volume of waste landfilled at the disposal site for the purpose of extending the life of the waste disposal site, the waste is first excavated and accumulated from the landfill 1 by a hydraulic excavator for excavation. The excavated waste 2a is input to the input port 5 of the first articulated conveyor 3 by the input excavator 4 and conveyed by the first articulated conveyor 3. Then, iron scraps 8 and the like are sorted and removed from the waste 2b discharged from the chute 7 of the first articulated conveyor 3 by the magnetic sorting hydraulic excavator 6, and the sorted and removed waste 2b is loaded. 10 is put into the inlet 11 of the screen sorting device 9, and the screen sorting device 9 sorts into three kinds of sizes, that is, a large grain waste 21L, a medium grain waste 21M, and a small grain waste 21S.
Then, the wheel loader 26 puts the small grain waste 21 </ b> S into the insertion port 5 of the second articulated conveyor 25 and conveys it by the second articulated conveyor 25. The small granular waste 21S discharged from the chute 7 of the second articulated conveyor 25 is backfilled in the reclaimed land 1 as cover soil by a wheel loader or the like (not shown), for example. Further, the medium-size waste 21M and the large-size waste 21L are reduced by a volume reduction device (for example, a compression device, a melt-solidification device, an incinerator, etc.), and the reduced medium-size waste 21M and the large-size waste 21L Is also conveyed by the second articulated conveyor 25 and backfilled in the landfill 1.

  In the present embodiment, the waste 2a dug from the landfill 1 using the first articulated conveyor 3 whose input port 5 is movable along with the movement of the excavation work range of the landfill 1 It is transported to the vicinity of a magnetic sorting hydraulic excavator 6 and a screen sorting device 9 arranged in the landfill 1. At this time, the first articulated conveyor 3 can easily change the arrangement of the inlets 5 while fixing the arrangement of the discharge chute 7. Therefore, without changing the magnetic sorting hydraulic excavator 6 and the screen sorting device 9 arranged on the discharge side of the first articulated conveyor 3, the arrangement of the inlets 5 of the first articulated conveyor 3 can be changed. The excavation work of the vast area of the landfill 1 can be efficiently performed while being changed.

  Also, the waste 21S, 21M, and 21L that has been sorted and reduced by using the second articulated conveyor 25 that can move the chute 7 along with the movement of the backfilling work range of the landfill 1 Transport them and backfill them in landfill 1 At this time, the second multi-joint type conveyor 25 can easily change the arrangement of the discharge chute 7 while fixing the arrangement of the input port 5. Therefore, the second multi-joint type conveyor 25, the magnetic sorting hydraulic excavator 6, the screen sorting device 9 and the like (and the above-described volume reduction device etc.) arranged on the side of the insertion port 5 are not rearranged. While changing the arrangement of the chute 7 on the discharge side of the articulated conveyor 25, the predetermined position of the landfill 1 can be selected and the backfilling operation can be performed efficiently.

  In the above-described embodiment, the first and second articulated conveyors 3 and 25 have a structure in which the inlet 5 side and the chute 7 side are provided on the traveling body 16 so as to be turnable via a turning device 17. However, the present invention is not limited to this. That is, for example, the multi-joint type conveyor may include a wheel instead of the traveling body 16 and be pulled by a hydraulic excavator or the like so that the arrangement of the insertion port 5 and the chute 7 can be easily changed. In this case, the same effect as described above can be obtained.

  In the above-described embodiment, the first and second articulated conveyors 3 and 25 have been described by taking a configuration in which a plurality of belt conveyors 12A, 12B, and 12C are rotatably connected. For example, a plurality of chain conveyors, screw conveyors, or conveyors that can be expanded and contracted in the conveyance direction may be connected to be rotatable. In this case, the same effect as described above can be obtained.

  Moreover, in the said one Embodiment, although the 1st and 2nd articulated type conveyors 3 and 25 demonstrated taking the structure conveyed in the landfill 1 as an example, for example as a structure conveyed outside the landfill 1 Needless to say.

  In the above-described embodiment, the first articulated conveyor 3 that conveys the excavated waste 2a to the vicinity of the magnetic excavator 6 for magnetic sorting, the screen sorting device 9 and the like, and the sorting / volume reduction processing are performed. The configuration using the second articulated conveyor 25 that transports the wastes 21L, 21M, and 21S has been described as an example, but the configuration is not limited thereto. That is, when transporting the excavated waste 2a to the vicinity of the magnetic sorting hydraulic excavator 6 and the screen sorting apparatus 9 and when transporting the sorted and volume-reduced wastes 21L, 21M, and 21S, for example, The articulated conveyor 3 (or 25) may be shared. Also in such a modification, excavation of a large area of the landfill 1 is performed without rearranging the magnetic sorting hydraulic excavator 6 and the screen sorting device 9 (and the above-described volume reduction device etc.) as in the above embodiment. Work and backfill work can be performed. Moreover, since the number of articulated conveyors can be reduced as compared with the above-described embodiment, the cost can be reduced.

It is a top view showing the schematic structure of one Embodiment of the volume reduction system of the waste disposal site of this invention. It is the side view seen from the arrow II direction in FIG. 1, and represents the whole structure of the articulated type conveyor which comprises one Embodiment of the volume reduction system of the waste disposal site of this invention. It is the side view seen from the direction of arrow III in Drawing 1, and represents the whole structure of the screen sorter which constitutes one embodiment of the volume reduction system of the waste disposal site of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Landfill 2a, 2b Waste 3 First articulated conveyor 5 Input port 6 Hydraulic excavator for magnetic sorting (sorting device)
9 Screen sorting device (sorting device)
16 Traveling body 25 Second articulated conveyor 21L Large particle waste 21M Medium particle waste 21S Small particle waste

Claims (5)

  Along with the movement of the excavation work range in the landfill, the first articulated conveyor that can move the input port of the excavated waste and the waste conveyed by the first articulated conveyor are selected. A sorting device to be processed, and a second type of waste that has been sorted by this sorting device and waste that has undergone volume reduction treatment, and whose discharge side can be moved along with the movement of the backfill work range of the landfill. A volume reduction system for a waste disposal site, comprising an articulated conveyor.   When the sorting device for sorting waste and the waste excavated from the landfill are transported to the sorting device, the inlet can be moved along with the movement of the excavation work range of the landfill, and When transporting waste sorted and volume-reduced by the sorting device, a common articulated conveyor whose discharge side can move along with the movement of the backfilling work area of the landfill A volume reduction system for a waste disposal site.   The volume reduction system of the waste disposal site according to claim 1 or 2, wherein the articulated conveyor is provided on a traveling body capable of self-propelling on the input side, and disposed of. Volume reduction system for landfills.   The first articulated conveyor, which can move its input port as the excavation work area of the landfill moves, transports the waste excavated from the landfill and sorts the transported waste with a sorting device. After the treatment, the volume is reduced, and the waste that has been sorted and reduced is transported by the second articulated conveyor whose discharge side can be moved along with the movement of the backfill work area of the landfill. A method for reducing the volume of a waste disposal site, wherein the transported waste is backfilled in a landfill.   A common articulated conveyor that can move its input port as the excavation work area of the landfill moves, transports the waste excavated from the landfill, and sorts the transported waste with a sorting device. After that, the volume is reduced, and the waste that has been sorted and volume-reduced is conveyed by the shared articulated conveyor whose discharge side can be moved along with the movement of the backfilling work area of the landfill. A method for reducing the volume of a waste disposal site, wherein the transported waste is backfilled in a landfill.

Images