JP2884229B2 - Landfill method for waste - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the separation of incombustible materials such as sorted trash and bulky trash from general households and incinerated ash, dust ash and sludge discharged from public facilities and the like for use in lakes, rivers, bays and the like. The present invention relates to a landfill method for waste that is dumped and disposed on a shore or land.

[0002]

2. Description of the Related Art Generally, waste disposal methods include incineration, landfill, biochemical treatment, and the like. Leveling was performed by leveling the ground, and the site after leveling was greened to construct facilities such as parks.

However, in such a method, it is necessary to secure a large land for waste disposal in a flat area, and there is a shortage of suitable land near an urban area that discharges a large amount of waste. There is a problem that the waste has to be transported and the transportation cost increases. Furthermore, since the waste being landfilled comes into contact with the outside air, foul odors drift around the landfill, and the waste is scattered nearby due to the effects of wind or birds and beasts. There was a problem of damage.

Therefore, Japanese Patent Application Laid-Open No. 2-95489 discloses that
The landfill site is divided into unit work sections, and a roof sheet is provided in each unit work area. A bird's net is suspended on the front and rear space of the roof sheet, and after the completion of one landfill, the roof is replaced with the next landfill work area. A final disposal method has been proposed for garbage disposal works to be relocated.

[0005]

According to the above-mentioned final disposal method, birds can be prevented from invading by the bird-proofing net, but the stench of the waste cannot be prevented from leaking. Rain invades the construction area, and the rain that enters the garbage turns into sewage.
If the water shielding treatment becomes insufficient, there is a possibility that the wastewater may flow into a nearby basin.

Further, after landfilling in one construction section, the roof sheet or the like must be removed and erected in the next construction section, which is inferior in workability associated with roof relocation.

In addition, the above-mentioned final disposal method has a problem that, for example, it is necessary to secure a landfill site where a relatively large depression is formed, and a large amount of waste is sanitarily sanitized near an urban area. It is expected that it is difficult to secure land that can be used.

[0008] Therefore, the present invention relates to the infiltration of rain, leakage of foul odor,
Sanitary landfill can be performed by preventing the scattering of waste, land is relatively easy to secure, large amounts of waste can be treated sanitarily, and economical waste is also excellent. And a landfill method.

[0009]

The gist of the present invention will be described with reference to the accompanying drawings.

[0010] The waste forms a section of the pit landfill plurality of unit aligned to the end point from the compartment to the starting point side of the planned landfills before the landfill Teru reclamation and dumping, one of the compartments of the starting side Construction to form a pit reclamation one unit, to form a roof body moving to the end point of the pit Te the unit landfill closes the pit Te said unit landfill over the top of the pit Te the unit landfill, the roof Dump waste into the unit landfill pit below the body, and
After creating a unit landfill pit section to form one unit landfill pit, after burying the soil on the waste dumped in the unit landfill pit covered by the roof, The roof body is moved so as to be positioned on the unit landfill pit on the adjacent end point side ,
Unit reclamation by forming and reclamation by waste and cover soil
The present invention relates to a method for treating landfill waste, characterized in that the unit landfill pits are formed in a continuous landfill land by repeatedly performing the process for each pit.

[0011] Further, a landfill site is divided, and the landfill is excavated to form a landfill pit, and a retaining wall is provided around the landfill pit. And a movable roof that is large enough to hide the surroundings.
Only, this roof member provided and out section carrying vehicles can enter and exit such as a dump car, after providing a soil cover dumping waste the landfill pit, of another compartment to form the roof member adjacent < Landfilling of waste, characterized in that it is moved over the landfill pit, excavating one landfill pit, and continuously dumping waste and providing soil cover in one landfill pit The processing method.

[0012]

According to the present invention, waste is dumped into a unit landfill pit closed by a roof, and a cover soil is provided on top of the waste for landfill, and the adjacent unit landfill pit is formed. Then, the roof body is sequentially moved, and similarly, the dumping of waste and the creation of the unit landfill pit section are performed.

[0013] Since the present invention is constructed as described above, it is relatively easy to secure land, and it is possible to treat a large amount of waste in a sanitary manner. Can be provided.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described with reference to the drawings.

FIG. 1 to FIG. 10 show an embodiment of the present invention. On both sides of a landfill site 1 before excavation, a self-supporting earth, which is a wall made of steel pipe sheet piles 2 previously driven in parallel. The retaining wall 3 is formed, and the landfill
A plurality of section steel pipe sheet piles 4 which are walls cast between the steel pipe sheet piles 2 and 2, for example, each section has a plane of 50 m × 5.
0m plural landfill pits 5C, 5C, 5, 5A,
5B are sectioned side by side from the start point side to the end point side. That is, the left side in FIG. 1 is the start point side, and the right side is the end point side.

Although not shown, the landfill site may be excavated by open excavation without using the retaining wall 3, and a partition may be formed by a partition plate serving as an appropriate wall.

In FIG. 1, reference numeral 5C denotes a unit landfill pit after landfilling, and 5 denotes the earth retaining wall 2 which is formed by excavating the section by excavation or the like and has substantially the same height on all sides, and a steel pipe sheet pile for section. Unit reclamation pit during reclamation surrounded by 4 and 5
A is the second unit landfill pit being built by excavation, 5B
Indicates a third unit landfill pit before excavation. In addition, R is a lake. E is the bottom of the landfill pit 5 and is obtained by improving the soil by a consolidation method.

The unit landfill pit 5 where the waste 6 is being landfilled is formed by excavating it to a depth of, for example, 10 m and, as shown in FIG. 3, its bottom and the surfaces of the steel pipe sheet piles 2 and 4 are shielded. A water sheet 7 is provided to block the inside of the landfill pit 5 to prevent leakage of the leachate W from the waste 6 to the outside and intrusion of groundwater (not shown) from the outside.

Numeral 8 designates a movable roof body which covers the upper part corresponding to the unit landfill pit 5 and closes the roof, and has a waterproof film body 10 on an arch-shaped frame structure 9 made of steel or the like.
In addition, a waterproof film body 10 is provided between the steel pipe sheet pile 4 on the start point side and the end point side of the unit landfill pit 5.

In addition, a leg 11 is provided on the lower part of the roof 8 to be installed on the steel sheet piles 2 and 4.

The film body 10 is translucent so that natural light can be taken in the landfill pit 5.

A traveling rail 12 is laid on the retaining wall 3 made of the steel pipe sheet pile 2 provided in parallel as shown in FIG.
The wheel 13 is rotatably pivotally attached to a lower portion of an elevating member 14, and is raised and lowered by a hydraulic jack 15 as an elevating device provided at an upper portion of the elevating member 14 so as to freely advance from the lower surface of the leg 11. It is provided in.

An airtight member 16 made of hard rubber or the like is provided below the leg portion 11.

On the side of the roof 8, there is provided a waste dumping port 17 as an access port, and a vehicle entrance 18 is provided integrally with the roof 8 so as to cover the dumping port 17. A waste transporting vehicle 19 such as a dump truck enters the vehicle entrance 18, and throws the waste 6 into the unit landfill pit 5 from the dump port 17.

An opening / closing door 20 is provided at the dumping opening 17, and the opening / closing door 20 is pivotally connected at its upper portion to the roof 8 side, and is opened and closed by a hydraulic jack 21 connected to the rear surface.

The vehicle entry section 18 comprises a bottom section 22 and a substantially arched roof section 23. When the wheels 13 of the movable roof section 8 descend, the vehicle entry section 18 can move up integrally with the roof section 8. it can.

As shown in FIG. 5, an air outlet 24 is provided above the dump port 17, and the air outlet 24 is provided by a compressor or a blower (not shown).
Air is blown out from the.

In order to treat the leachate W from the waste 6 in the unit landfill pit 5, a collection / drainage pipe 25 is formed at the bottom of the unit landfill pit 5 as shown in FIGS. The drainage pipe 25 has a discharge side 26 connected to a drainage pit 27, the other end of which is closed, and a small hole (not shown) formed in the drainage pipe 25 is used as a unit landfill pit. The leachate W in 5 is collected.

The leachate W accumulated in the water collecting pit 27 is pumped by a submersible pump 28 and sent to a water treatment facility 30 through a water guide pipe 29 for treatment.

In the unit landfill pit 5, a plurality of degassing pipes 31 are disposed in the waste 6 as shown in FIG. 8 in order to process gas (not shown) generated from the waste 6 during landfill. Standing up, the upper end of this gas vent tube 31 is detachable joint
The connecting pipe 33 is connected to the connecting pipe 33 via a pipe 32, and the connecting pipe 33 is piped along the beam 34 of the frame structure 9. The gas collected through the connecting pipe 33 is purified by a gas purifying device 35. After that, the air is exhausted from the discharge pipe 35A.

When the landfill of the waste 6 reaches a specified amount, as shown in FIG. 9, the exhaust pipe 36 is connected to the upper end of the degassing pipe 31 by removing the joint 32, and After the soil is covered with the soil 37 and landfilled, the gas generated from the waste 6 is discharged to the outside.

As shown in FIG. 10, a plurality of water sprinkling devices 38, such as sprinklers, are provided below the beam 34 of the roof body 8.
These are connected to a water supply pipe (not shown), and water can be sprinkled into the unit landfill pit 5 by a pump device (not shown) or the like.

The roof 8 is provided with a plurality of fire extinguishing devices 39 for irradiating CO ₂ .

Reference numeral 40 denotes a work vehicle such as a bulldozer or a landfill compactor for leveling and compacting the landfill waste 6, which is operated by a remote control unattended and provided on the roof 8. It is driven from the room 41 by remote control.

Next, the waste landfill method of the present invention will be described.

The steel sheet piles 2 are cast in parallel to form the earth retaining wall 3 and, at the same time, the first landfill pit section formed by excavation is formed by excavating the unit landfill pit section defined by the wall made of the sectioning steel sheet pile 4. The unit landfill pit 5 is constructed.

Then, the movable roof 8 is installed on the first unit landfill pit 5.

Then, the roof body 8 and both steel pipe sheet piles 2,
Into the first unit landfill pit 5 which is isolated from the outside by 4, waste 6 is charged and landfilled, and for example, a cover soil 37 having a depth of about 1 m is provided on the waste 6 and The landfill of the first unit landfill pits 5 is completed at almost the same height.

As the covering soil 37, a part of the soil excavated from the third unit landfill pit 5B before excavation, which is the end point side, is used.

Further, after the roof 8 is installed in the first unit landfill pit 5, a section of the second unit landfill pit 5A adjacent to the end point side is excavated and formed. After the first unit landfill pit 5 has been reclaimed, the roof 8 is moved onto the second unit landfill pit 5A to reclaim waste 6, from which a soil 37 is reclaimed. The process is performed in sequence to generate waste 6 in each unit landfill pit 5, 5A, 5B.
Landfill. Further, during the reclamation of the second unit reclamation pit 5A, greening is performed on the cover soil 37 of the first unit reclamation pit 5 which has been reclamated, and the park is formed like the unit reclamation pit 5C shown in FIG. Construction of P or parking lot Q is performed.

As described above, in this embodiment, a plurality of unit landfill pits 5C, 5C, which are arranged from the starting point to the ending point by dividing the scheduled landfill site 1 before dumping and reclaiming the waste 6
5C, 5, 5A, and 5B are formed, and the starting point-side section is formed to be surrounded by a self-supporting retaining wall 3 having almost the same height on all sides and a plurality of sectioning steel pipe sheet piles 4. A unit landfill pit 5 is formed, and the unit landfill pit 5 is covered by covering the unit landfill pit 5 and closed.
A roof body 8 that moves toward the end point of the vehicle is formed, and waste 6 is dumped into a unit landfill pit 5 below the roof body 8.
A section of the unit landfill pit 5A on the end point adjacent to the unit landfill pit 5 is formed in the same manner as described above to form the unit landfill pit 5A, and discarded in the unit landfill pit 5 covered by the roof body 8. After covering soil 37 on the waste 6 and burying it at almost the same height as the self-supporting retaining wall 3 and the plurality of steel pipe sheet piles 4, the roof body 8 is moved to a unit landfill on the adjacent end point side. This is a method in which a unit landfill pit is formed on a continuous waste landfill while the landfill with the waste 6 and the cover soil 37 is sequentially repeated while being positioned on the pit 5A. The roof 6 is sequentially moved, and the waste 6 is landfilled in the unit landfill pit 5 which is surrounded on all sides by walls of almost the same height and is always isolated from the outside by the roof 8. The odor is prevented from leaking to the outside and the waste 6 is prevented from being scattered. Waste can be landfilled rawly, and the roof 8 prevents rainwater from entering the unit landfill pits 5, so that the amount of leachate W to be treated is reduced, thereby reducing wastewater. It can be prevented from flowing into nearby basins.

Further, by forming the unit landfill pits 5 surrounded by walls of almost the same height on all sides, a large amount of waste 6 can be sanitarily landfilled on a smaller area than before.

Therefore, land can be secured near the suburbs of the city, etc., and the transportation cost of the waste 6 can be reduced, which is economically superior.

In addition, since the waste 6 does not come into direct contact with the outside world, it can be sanitarily landfilled, and the waste 6 in the unit landfill pit 5 cannot be seen from the outside. There is no loss.

Further, since birds and beasts can be prevented from entering the unit landfill pit 5 during reclamation, the wastes 6 are not scattered by the birds and beasts and sanitary.

Further, as an effect of the embodiment, the covering soil 37 provided on the upper part of the waste 6 uses a part of the soil formed by excavating the section on the end point side, so that the excavated soil is discarded. Transportation costs and the like can be reduced.

Further, after the landfill is completed, the site can be used by performing greening or the like sequentially.

In this embodiment, the unit landfill pits 5C, 5C, 5, 5A, and 5B are arranged on both sides of the unit landfill pits 5C, 5C, 5, 5A, and 5B along the direction adjacent to the unit landfill pits. Since it has the running rail 12 laid and the wheels 13 provided below the roof 8 and running along the running rail 12, after the unit landfill pit 5 has been reclaimed, the running rail 12 The roof 8 can be easily moved onto the adjacent unit landfill pit 5A via the wheels 13, and after the roof 8 is moved, the roof 8 invades rainwater, leaks odors and wastes 6.
The waste 6 can be dumped in the unit landfill pit 5A to prevent sanitary landfill while preventing scattering of waste.

It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, as shown in FIG. 11, a steel pipe sheet pile 2 serving as a third wall is provided in parallel with steel pipe sheet piles 2 and 2 provided in parallel.
A and a steel pipe sheet pile 4A serving as a wall between the steel pipe sheet piles 2 and 2A to form a unit landfill pit 5B.
May be provided in a two-row grid pattern in the upper and lower rows. In this case, the central steel pipe sheet pile 2 can be shared and used as the retaining wall 3 of the upper and lower unit landfill pits, resulting in excellent equipment efficiency.

The number of unit landfill pits is not limited to two, but may be three.
.., 4 rows...

Further, in this embodiment, the case where the scheduled landfill site 1 is set on the shore of the lake R is shown.
It is possible to select not only the shores such as lakes, rivers, and coasts but also the appropriate places on land.

Further, the bottom of the excavated landfill site 1 need not be improved by consolidation or the like.

[Brief description of the drawings]

FIG. 1A is a sectional view of a landfill according to the present embodiment, and FIG.
FIG.

FIG. 2 is a cross-sectional view showing a landfill pit during landfill of the present embodiment.

FIG. 3 is an explanatory diagram of a main part of the present embodiment.

FIG. 4 is a cross-sectional view of a main part showing a leg of the roof body of the present embodiment.

FIG. 5 is a cross-sectional view illustrating the area around a waste dumping port of the present embodiment.

FIG. 6 is an explanatory diagram of a main part showing around a drainage pipe of the present embodiment.

FIG. 7 is an explanatory diagram of the present embodiment.

FIG. 8 is an explanatory diagram showing landfill pits during landfill according to the embodiment.

FIG. 9 is an explanatory diagram showing landfill pits after landfill according to the present embodiment.

FIG. 10 is an explanatory diagram showing landfill pits during landfill according to the present embodiment.

FIG. 11 is a plan view showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Landfill site 2, 2A steel pipe sheet pile 3 Retaining wall (wall) 4, 4A Sectional steel pipe sheet pile (wall) 5, 5A, 5B, 5C Unit landfill pit 6 Waste 8 Roof body 12 Running rail 13 Wheel 37 Earth covering

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B09B 1/00 E02B 3/18

Claims (2)

(57) [Claims] Claims: 1. A landfill site before a landfill where waste is dumped and landfilled is sectioned to form a plurality of unit landfill pits arranged from a starting point side to an end point side, and one of the starting point side pits is formed . A roof that forms a unit to form one unit landfill pit, covers the upper part of the unit landfill pit, closes the unit landfill pit, and moves to the end point side of the unit landfill pit A body is formed, the waste is dumped into the unit landfill pit below this roof, and one unit landfill pit on the end point adjacent to this unit landfill pit is created to form one unit landfill After forming a pit and providing land covering on the waste dumped in the unit landfill pit covered with the roof body and burying it, the roof body is moved and the unit landfill on the adjacent end point side is moved. Position on the pit, and
Unit reclamation by forming and reclamation by waste and cover soil
A landfill pit is formed in a continuous landfill by successively and repeatedly performing the process for each pit. 2. A partition the planned landfills, pits Te one landfill by drilling the compartment was a section forming a Retaining walls provided this reclamation around the pit, the upper portion of the landfill pits And a rotatable roof body large enough to hide the surroundings ,
Entry and exit portions transportation vehicles can enter and exit such as a dump car on the roof member is provided, the landfill after providing a soil cover dumping waste pit Te pit reclamation of another compartment to form the roof member adjacent move up, landfill waste disposal method characterized by continuously performing the that one Te that and one landfill drilling a pit reclamation providing soil cover dumping waste pit.