JP7444810B2 - Leachate collection equipment at waste disposal site - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act Completion location: Eco Park Shimoyokokura, 532 Shimoyokokura-cho, Utsunomiya City, Tochigi Prefecture Completion date: March 24, 2020

The present invention relates to leachate collection equipment for a waste disposal site that processes leachate from waste that has been reclaimed in a landfill space partitioned off from the surrounding ground by a seepage barrier.

A final disposal site can be decommissioned after it has been closed, i.e., after landfilling has been completed, by meeting the decommissioning standards stipulated by the "Order to Establish Technical Standards for Final Disposal of Municipal Wastes and Final Disposal of Industrial Wastes." can. For example, decommissioning standards are set based on the properties of leachate, the temperature of the reclaimed layer, the status of ground subsidence, etc.

Leachate from the waste is guided to a water collection pit along a leachate guide path placed along the seepage barrier, where it is collected and pumped to the ground by a water pump installed in the water collection pit. processed later.

Patent Document 1 describes a waste disposal facility that disposes waste in a landfill, and includes a storage tank that stores the waste in a mortar-shaped storage space partitioned from the surrounding ground by an impermeable layer, and a water collection pipe that collects leachate in the space, a water reservoir that stores the leachate collected by the water collection pipe, and a leachate discharge path that discharges the leachate from the water reservoir to the outside of the storage tank; A waste disposal facility is disclosed, comprising: a water collection pit having a water collection pit, the water collection pit being located in a region closer to the storage space than the impermeable layer.

In the water collection pit, a cylindrical frame with a rectangular cross section is formed to install a leachate discharge channel, and an inspection gallery is formed through which people can pass.The inspection gallery has multiple landings and stairs connecting the landings. has been done.

Japanese Patent Application Publication No. 2013-126639

However, when it is necessary to carry leachate stored in the water storage pit out of the water collection pit for maintenance purposes, a person carries the pump, which is a heavy object, and passes through the stairs installed in the inspection gallery. This required a lot of labor to be carried out.

Therefore, as shown in FIGS. 7(a) and 7(b), a monorail B is arranged along the inclined shaft A that constitutes the inspection gallery, and the monorail B is run along the monorail B using the power of an internal combustion engine EG such as a diesel engine. It is conceivable that a driving vehicle C is installed, and a pump is mounted on a transport vehicle D that is towed by the driving vehicle C, and the pump is carried in and out. Note that although a plurality of drive vehicles C are depicted running along monorail B in FIG. There is one.

In this case, the exhaust gas from the internal combustion engine fills the inclined shaft A, deteriorating the environment, so it is necessary to provide ventilation equipment and a gas sensor to monitor the environment inside the shaft, which will actually increase the equipment cost. Moreover, since the monorail B and the driving vehicle C are not general-purpose products but special-purpose products, their maintenance costs will also increase.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide leachate collection equipment for a waste disposal site that allows heavy equipment such as water pumps to be easily transported in and out without increasing equipment costs.

In order to achieve the above-mentioned object, the first characteristic configuration of the leachate collection equipment for a waste disposal site according to the present invention is to A leachate collection facility, comprising: a water collection pit into which the leachate is guided; a shaft installed at a position distant from the water collection pit; a tunnel connecting the water collection pit and the shaft; a loading/unloading device for loading and unloading a water pump installed in a water collection pit and pumping up leachate through the tunnel and the vertical shaft, and the tunnel is composed of an inclined shaft with a smoothly continuous floor surface. It is in.

The tunnel that connects the water collection pit and the vertical shaft is composed of an inclined shaft with a smoothly continuous floor surface, so the water pump can be easily transported along the smoothly continuous floor surface via the loading/unloading device. be able to.

The second characteristic configuration is that in addition to the first characteristic configuration described above, the carrying-in/out device includes a first conveyance mechanism that raises and lowers the water pump in the water collection pit, and a first transport mechanism that raises and lowers the water pump in the vertical shaft. a third transport mechanism that transports the water pump along a smooth guide path formed along the floor of the inclined shaft between the first transport mechanism and the second transport mechanism; The point is that it is configured with the following features.

A first transport mechanism installed in the water collection pit raises and lowers the water pump, a second transport mechanism installed in the shaft raises and lowers the water pump, and a third transport mechanism moves the water pump along a smooth guide path along the inclined shaft. By configuring the lift pump to be transported, even a heavy lift pump can be easily carried in and out, and can be carried in and out safely and without requiring any effort.

The third characteristic configuration is that, in addition to the second characteristic configuration described above, the tunnel has the third conveyance mechanism disposed on the floor surface, and the upper part of the tunnel is formed in an arch shape.

Since the upper part of the tunnel is formed in an arch shape, the tunnel can be easily constructed while having a strong structure, and the third conveyance mechanism can be easily installed along the smoothly continuous floor of the tunnel.

The fourth characteristic configuration is that, in addition to the second or third characteristic configuration described above, the third conveyance mechanism includes a conveyance table that moves along the guide path, and a conveyance table that moves the conveyance table along the guide path. The main feature is that it is equipped with a motor-driven traction device that pulls it up.

Since the carrier is towed by a motor-driven traction device along a smooth guideway laid in the inclined shaft, there is no need for special equipment for evacuation of exhaust gas, which is required when an internal combustion engine is used.

In addition to the fourth characteristic configuration described above, the fifth characteristic configuration is that the guide path is configured by rail units formed in advance to a predetermined length arranged linearly along the bottom surface of the inclined shaft; The present invention is characterized in that the conveyance table is constituted by a conveyance carriage that runs on the rail unit.

It is sufficient to simply lay a rail unit formed in advance to a predetermined length along the road surface of the inclined shaft, which simplifies the installation work.

The sixth characteristic configuration is that, in addition to the fifth characteristic configuration described above, the first transport mechanism movably supports a lifting device that raises and lowers the water pump in the water collection pit, and a lifting device that moves the lifting device. The present invention further includes a ceiling rail for moving the water pump lifted up by the lifting device to a space above the transport vehicle disposed above the guide path.

If you lift the water pump from the water tank in the water collection pit using a lifting device that can be moved along the ceiling rail, and then move the water pump along the ceiling rail in that state, you can move it to the space above the transport vehicle on the guideway, and as it is. By lowering the lifting device, it can be mounted on a transport vehicle.

The seventh characteristic configuration is that, in addition to the sixth characteristic configuration described above, the second transport mechanism includes the lifting device that lifts and lowers the water pump mounted on the transport truck, and the lifting device that lifts and lowers the lifting device. It comprises an elevating device and a pair of guide columns for positioning and guiding the pump that moves up and down along the elevating device, and is configured such that a guided part of the pump is sandwiched between the pair of guide columns. It is in the point where it is.

When the lift pump is moved up and down by the second conveyance mechanism installed in the shaft, the guided part of the lift pump gets caught in the guide column, causing the lift pump suspended from the lifting device to swing while going up and down. This allows you to avoid collisions with surrounding equipment and damage.

As explained above, according to the present invention, it has become possible to provide leachate collection equipment for a waste disposal site that allows heavy equipment such as water pumps to be easily transported in and out without increasing equipment costs.

(a) is an explanatory diagram showing the vertical cross-sectional structure of the leachate collection equipment provided at the waste disposal site, (b) is an explanatory diagram of the bottom view of the leachate collection equipment (a) shows a water collection pit, a sectional view taken along the line AA in Fig. 1(a), and (b) shows a slanted shaft, a sectional view taken along the BB line in Fig. (indicates space for transport trolley) (a) is a vertical sectional view of the main part showing the pump guide path from the water collection pit to the vertical shaft via the slope shaft, and (b) is a longitudinal sectional view of the main part showing the pump guide path from the water collection pit to the vertical shaft via the slope shaft. (c) is a plan view of the main part showing an enlarged view of the rail unit in the area circled by the dashed line in (b). (a) is a plan view of the transport vehicle, (b) is a side view of the transport vehicle showing the state in which the water pump is mounted on the transport vehicle, and (c) is an explanation of the main parts showing the state in which the water pump is mounted on the transport vehicle. Since we have not received an accurate drawing of the sectional view taken along line A-A in Figure 4(b), we have chosen to use it as an ``illustrative drawing of the main parts.'' (a) is a side view of the main part of the shaft, and (b) is a plan view of the main part of the ground floor of the shaft, showing the pump engaged with the guide column. (a) is a side view of the main part of the upper and lower intermediate parts of the shaft, (b) is an explanatory diagram of the engagement state between the guided part of the pump and the guide column (a) is a side view of a conventional inclined shaft, (b) is an explanatory diagram of a conventional conveyance mechanism

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a leachate collection facility for a waste disposal site according to the present invention will be described below.
FIG. 1 shows the structure of a closed type (also called "covered type") controlled waste final disposal site 10 (hereinafter simply referred to as "waste final disposal site 10"). The final waste disposal site 10 is installed and operated based on the structural standards and maintenance standards stipulated by the Act on Waste Disposal and Public Cleansing, and is disposed of in a landfill according to the classification of waste stipulated in the same act.

In the final waste disposal site 10, a valley in a mountainous area or excavated ground is partitioned off by a dam to form a landfill space S, which serves as a landfill, and leachate from the waste, which is the landfill, is directed to a water collection pit. A collection/drainage guide facility 12 is installed which is equipped with grooves and pipes for guiding and collecting/draining water.

The final waste disposal site 10 is closed off with a fence to prevent unspecified persons from easily entering, and to prevent various odor gases generated from the landfill from leaking outside and to prevent rainwater from seeping in. It is covered with a covering facility 13. The covered facility 13 has a framework made of steel columns, and is separated from the outside air by placing metal plate-like bodies.

The structure of the covered facility 13 includes a rigid frame structure, an arch structure, a plane truss structure, a self-balancing hybrid structure that combines a high-rigidity bending material and a high-tensile strength cable, a space frame structure, a shell structure, and an air support structure. Various known support structures such as , suspension structure, etc. can be employed.

Organic waste such as sludge, incinerated ash, waste plastics, slag, concrete scraps, glass scraps, ceramic scraps, slag, rubble scraps, and the like are delivered to the final waste disposal site 10 and reclaimed.

The various wastes brought in by truck are buried on top of the water barrier 11 starting from the edge of the site, and each time a certain amount of waste is landfilled, it is covered with soil, and new waste is placed on top of it. Once the land is filled and the upper limit is reached, a final covering of soil is applied, and if necessary, air supply pipes are installed to supply air to the reclaimed layer.

Furthermore, sprinklers constituting a water sprinkling mechanism are installed in the space below the covering facility 13, and are configured to spray water from the sprinklers to prevent dust from flying up from the landfill and to promote biological treatment of the landfill. ing.

Once the final waste disposal site 10 is covered with soil, it will be closed, and the properties of the leachate, the temperature of the landfill layer, the state of ground subsidence, etc. will be managed until they reach predetermined decommissioning standards, and then it will be decommissioned. .

A water collection pit 20 is installed adjacent to the reclaimed space S, and a reservoir 22 is provided adjacent to the bottom of the water collection pit 20 with a sand settling basin 21 and a weir in between. Leachate from the waste flows into the settling basin 21 via the collection and drainage guide equipment 12, and the leachate after settling the sand flows into the reservoir 22 over the weir.

A vertical shaft 40 is excavated at a position remote from the water collection pit 20 outside the covered facility 13, and a diagonal shaft 30, which is a shaft connecting the water collection pit 20 and the vertical shaft 40, is excavated and formed. A leachate collection facility 100 is configured by the water collection pit 20, the inclined shaft 30, the vertical shaft 40, and the equipment installed therein.

As shown in FIGS. 1 (a), (b), FIGS. 2 (a), (b), and 3 (a), (b), the leachate collection equipment 100 includes a water collection pit 20, a diagonal shaft 30, In addition to the shaft 40, it includes a settling basin 21, a sand discharge pump 2, a reservoir 22, a pump 3, a pump pipe 4, a water supply pipe 5, a power supply line 6, a ventilation duct 9, a carry-in/out device 50, and the like.

The inclined shaft 30 has a smooth floor surface (a flat floor surface in this embodiment) with a constant slope of about 15 to 25% from the water collection pit 20 toward the vertical shaft 40, and has an arch-shaped upper part. ing. Since the upper part is arch-shaped and the lower part is box-shaped, the load on the upper part is transmitted as axial compressive force, and the bending moment generated on the upper part and side walls of the member is significantly reduced, resulting in a rational structure. There is.

There are two methods for constructing such inclined shafts: one is to cast concrete on-site, and the other is to construct by laying and connecting secondary concrete culverts.In the latter case, a certain level of quality is ensured. Not only is this possible, but it is also highly effective in shortening the construction period and reducing construction costs. Therefore, in this embodiment, the building is constructed by laying a precast concrete arch culvert (registered trademark of Geostar Co., Ltd.) whose upper part is arch-shaped. Note that a back culvert with a box-shaped upper part may be used. Moreover, it may be made of reinforced concrete instead of precast concrete.

Rails 7A and sleepers 7B forming a track 7 for a transport vehicle 70 for transporting equipment, which will be described later, are laid on the floor surface, and a passage for workers, that is, an inspection gallery is formed on the side thereof. In addition, in this embodiment, the tunnel is formed in the inclined shaft 30 with the aim of preventing the drainage water from the water collection pit from flowing into the tunnel, but the slope is not limited to the range of 15 to 25%. It can be set as appropriate. Further, the inspection corridor may be a flat road treated to prevent slipping, or may be a step road.

Furthermore, the slope of the tunnel does not need to be constant and may change smoothly. In other words, it is sufficient that the tunnel has a smoothly continuous floor surface, and a smooth guide path is provided on the floor surface. In this embodiment, a pair of left and right rails 7A are used as the guide path, but the guide path is constituted by a roller conveyor mechanism in which a friction reducing mechanism such as a plurality of rollers is arranged along the conveyance direction in addition to the rails 7A. You can leave it there. In place of the transport vehicle 70, a transport platform without wheels may be configured to move on the upper surface of the guide path.

Note that the term "diagonal shaft 30" used in this embodiment is used as a concept that also includes a horizontal shaft (gradient of 0%).

Two pumps 3 are immersed in the reservoir 22, and the leachate that has flowed into the reservoir 22 is guided by the pumps 3 to a leachate treatment facility installed on the ground, where it is purified. The pair of lift pumps 3 are each connected to vertical sub-lift pipes 4A and 4B provided with check valves, and are connected to a main lift pipe 4 which is connected so that the sub-lift pipes 4A and 4B merge. There is. Two main lift pipes 4 are arranged for maintenance and the like, and are composed of an inclined pipe line arranged in a diagonal shaft 30 and a vertical pipe line arranged in a vertical shaft 40. A portion of the treated water purified by the leachate treatment facility is used to water the landfill through sprinklers, and the rest is used as in-house treated water or discharged to a sewage treatment plant or the like.

The leachate collection facility 100 includes a loading/unloading device 50 for loading and unloading heavy equipment, such as maintenance of the water pump 3 installed in the water collecting pit 20, between the water collecting pit 20 and the shaft 40. The loading/unloading device 50 includes a first transport mechanism 20A that raises and lowers the water pump 3 in the water collection pit 20, a second transport mechanism 40A that raises and lowers the water pump 3 in the shaft 40, a first transport mechanism 20A, and a second transport mechanism. 40A, and a third transport mechanism 30A that transports the water pump 3 through a guide path formed along the floor surface of the inclined shaft 30. The first transport mechanism 20A and the second transport mechanism 40A are transport mechanisms that transport heavy equipment in the vertical direction, and the third transport mechanism 30A is a transport mechanism that transports the heavy equipment in the horizontal direction.

The first transport mechanism 20A includes a chain block 23 (see FIG. 3(a)), which is an example of a lifting device that lifts and lowers the water pump 3 between it and the reservoir 22, and a chain block 23 that movably supports the chain block 23. The ceiling rail 24 is arranged in a curved manner so as to move the water pump 3 lifted up at 23 to the space above the transport vehicle 70 arranged on the upper part of the rail 7A. As a lifting device, a rope hoist, winch, crane, etc. may be used in addition to a chain block.

When the water pump 3 is pulled up from the reservoir 22 by the chain block 23 that is movable along the ceiling rail 24, and the water pump 3 is moved along the ceiling rail 24 in this state, it is placed in the space above the transport vehicle 70 on the rail 7A. The chain block 23 can be moved, and by lowering the chain block 23 as it is, it can be mounted on the transport vehicle 70.

As shown in FIGS. 3A and 3B, the third transport mechanism 30A includes a transport cart 70 that runs along a linear track 7, which is an example of a smooth guide path laid in the inclined shaft 30. It is configured to include an electric winch 80, which is an example of a motor-driven traction device that pulls up or opens the transport vehicle 70 toward the shaft 40 along the track 7. The winding drum provided on the winch 80 is equipped with a manually operable handle. Instead of the electric winch 80, a hydraulic winch or a pneumatic winch may be used. Further, although an example has been shown in which the traction device is fixedly installed in the shaft 40, it may be mounted on the transport vehicle 70. Note that after the transport vehicle 70 is pulled up to the shaft 40 by a winch, the transport vehicle 70 may be moved to the water collection pit 20 along the inclined shaft using gravity by opening the winch.

As shown in FIGS. 3(b) and 3(c), the track 7 includes a rail 7A and sleepers 7B arranged at predetermined intervals along the rail 7A. Then, for the track 7, a rail unit 7U including a rail 7A of a predetermined size (about 2 m in this embodiment) set shorter than the total length and a sleeper 7B is prepared, and a plurality of rail units 7U are carried in from the shaft 40. It is configured to be arranged linearly on the ground of the inclined shaft 30 and fixed with anchor bolts. Equilateral angle steel is used for the rail 7A, a flat bar is used for the sleeper 7B, and the equilateral angle steel is welded to the flat bar.

As shown in FIGS. 4(a), (b), and (c), the transport vehicle 70 includes a pair of front and rear V-groove wheels 71, a loading platform 72 on which the water pump 3 is mounted, a gripping portion 73, A hook 74 for a load tightening belt and a hook 75 for a winch are provided. The V-groove formed in the wheel 71 fits into the top of the equilateral angle bar forming the rail 7A, so that derailment is avoided.

After the water pump 3 suspended by the first transport mechanism 20A is placed on the cargo receiving platform 72, it is fixed with the cargo tightening belt 76 via the cargo tightening belt hooks 74 arranged on the front and rear sides of the cargo receiving platform 72. Ru. The water pump 3 is transported toward the shaft 40 by engaging the wire 81 with a pair of winch hooks 75 arranged on the left and right sides of the front of the loading platform 72 and activating the winch 80 . Note that when transporting the water pump 3 from the shaft 40 to the water collection pit 20, by releasing the brake of the winch 80, the transport vehicle 70 can be made to travel on its own along the slope.

The water pump 3 includes a casing 3A housing an electric motor, a pump casing 3B below the casing 3A, a suction port 3C disposed below the pump casing 3B, and a discharge port 3D disposed on the side of the pump casing 3B. It is equipped with An eye bolt 3E for hanging is provided on the top surface of the casing 3A.

The shaft 40 is equipped with two main water pumps 4 arranged in the vertical direction, a lifting staircase 41 serving as a lifting equipment for inspection, and a pair of guide columns 43 and 44. Horizontal pipes 4B connected to the upper ends of the main water pumping pipes 4 are connected to a single water pipe 4C, and the water is sent to the leachate treatment facility. The guide columns 43 and 44 are fixed to the side wall of the shaft 40 at a plurality of locations so that their lower ends are spaced apart from the floor surface.

The second transport mechanism 40A includes a chain block 42 that raises and lowers the water pump 3 mounted on the transport vehicle 70, a lifting device 45 that includes a winding drum driven by an electric motor that lifts and lowers the chain block 42, and a lifting device 45 that moves along the lifting device 45. The pump is provided with a pair of guide columns 43 and 44 that position and guide the lift pump 3 as it moves up and down, and is configured so that a guided portion of the lift pump 3 is sandwiched between the pair of guide columns 43 and 44.

In FIG. 5(b), two water pumps 3 are shown, and the water pump 3 shown at the top in the figure is placed on a loading/unloading stage on the ground floor, and is lifted up via a chain block. By rotating the attitude in the direction of the dashed line from this state, the attitude of the lift pump 3 shown in the lower part of the figure, that is, the cover of the lift pump 3 facing in an arc shape in plan view can be changed. The guide portion 3F is engaged with the guide columns 43 and 44, and is in a position to be lowered downward along the guide columns 43 and 44. The drawing of two water pumps 3 is for convenience of explanation, and in reality there is only one water pump 3.

As shown in FIGS. 6(a) and 6(b), the water pump 3 transported by the third transport mechanism 30A is rotated 90 degrees by the operator while being lifted from the transport cart 70 via the chain block 42. and is pulled upward from the lower ends of the guide columns 43 and 44 so that the guide columns 43 and 44 engage with the guided portion 3F formed at the tip end side of the discharge port 3D and facing each other in an arc shape in plan view. Note that if the water pump 3 is mounted on the transport vehicle 70 in a state in which it has been rotated 90 degrees in advance, there is no need for the operator to rotate it 90 degrees. Also, when lifting the water pump 3 from the water collection pit 20, the water collection pit 20 may be provided with a structure similar to the guide columns 43, 44 so that the water pump 3 can be guided.

When the lift pump 3 is moved up and down by the second conveyance mechanism 40A installed in the shaft 40, the guided portion 3F of the lift pump 3 is sandwiched between the guide columns 43 and 44, so that it is suspended from the chain block 42. It is possible to avoid a situation in which the water pump 3 swings and collides with surrounding equipment, causing damage.

As explained above, according to the present invention, the water pump is moved up and down by the first transport mechanism installed in the water collection pit, the water pump is moved up and down by the second transport mechanism installed in the shaft, and the water pump is moved up and down along the guide path along the inclined shaft. By configuring the lift pump to be transported by the third transport mechanism that moves along the 3rd conveyance mechanism, even a heavy lift pump can be easily carried in and out, and it can be carried in and out safely and without requiring any effort. become.

In addition, the objects to be transported by each transport mechanism are not limited to water pumps, but also other heavy equipment, sand that has settled in the settling basin 21, which has been pulled up by sand pumps and accumulated in flexible container bags, etc. Sediments in water pits are also targeted.

Each of the embodiments described above is merely an example of the present invention, and the technical scope of the present invention is not limited by the description, and the specific configuration of each part is not limited to achieving the effects of the present invention. Needless to say, the design can be changed as appropriate within the range.

2: Sand removal pump 3: Lifting pump 3A: Casing 3B: Pump casing 3C: Suction port 3D: Discharge port 3E: Eye bolt 3F: Guided part 4A: 4B: Lifting pipe (sub-lifting pipe)
4: Lifting pipe (main lifting pipe)
10: Final waste disposal site 11: Seal barrier 12: Collection and drainage guide equipment 100: Leachate collection equipment 20: Water collection pit 22: Reservoir 50: Carrying in/out device 20A: First transport mechanism 23: Lifting device (chain block)
24: Ceiling rail 30A: Third transport mechanism 70: Transport vehicle 7: Track 7A: Rail 7B: Sleeper 7U: Rail unit 80: Motor-driven traction device (winch)
40A: Second transport mechanism 42: Lifting device (chain block)
43, 44: Guide pillar 45: Lifting device 30: Mine shaft (slope shaft)
40: Shaft

Claims (7)

A leachate collection facility for a waste disposal site that processes leachate from waste reclaimed in a landfill space,
a water collection pit into which the leachate is guided and equipped with a water pump;
a vertical shaft installed at a location remote from the water collection pit;
a mine shaft connecting the water collection pit and the shaft;
a loading/unloading device for loading/unloading the water pump through the tunnel and the shaft;
Equipped with
The tunnel is a leachate water collection facility for a waste disposal site, which is comprised of an inclined shaft with a smoothly continuous floor surface. The carry-in/out device includes a first conveyance mechanism that raises and lowers the water pump in the water collection pit, a second conveyor mechanism that raises and lowers the water pump in the shaft, the first transport mechanism, and the second transport mechanism. leachate from a waste disposal site according to claim 1, further comprising a third conveyance mechanism for conveying the water pump along a smooth guide path formed along the floor surface of the inclined shaft between Water collection equipment. 3. The leachate collection equipment for a waste disposal site according to claim 2, wherein the third conveyance mechanism is arranged on the floor of the tunnel, and the upper part is formed in an arch shape. 4. The third transport mechanism includes a transport platform that moves along the guide path, and a motor-driven traction device that pulls up the transport platform along the guide path. leachate collection equipment for waste disposal sites. 2. The guide path is configured by rail units pre-formed to a predetermined length arranged linearly along the bottom surface of the inclined shaft, and the conveyance platform is configured by a conveyance cart that runs on the rail units. Leachate collection equipment for the waste disposal site described in 4. The first conveyance mechanism includes a lifting device that raises and lowers the water pump in the water collection pit, and a lifting device that movably supports the lifting device and disposes the water pump lifted by the lifting device at the upper part of the guide path. The leachate collection equipment for a waste disposal site according to claim 5, further comprising a ceiling rail for moving to a space above the transport vehicle. The second transport mechanism positions the lifting device that lifts and lowers the water pump mounted on the transport vehicle, the lifting device that lifts and lowers the lifting device, and the lifting pump that moves up and down along the lifting device. 7. The leachate collection equipment for a waste disposal site according to claim 6, further comprising a pair of guiding pillars for guiding the water pump, and configured to sandwich a guided portion of the pump between the pair of guiding pillars.

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