JPH0336101A - Structure for waste disposal and waste disposal method - Google Patents

Abstract

PURPOSE:To increase the quantity of disposal, prevent public nuisance like polluted water and odor, and improve the ease of control in a structure for reclamation and disposal of household wastes by enclosing periphery with continuous underground walls reaching down to impermeable layers, and constructing a water-barrier work at the bottom to form a cylindrical underground space. CONSTITUTION:A cylindrical underground space 6 is formed with continuous underground walls 2 reaching down to impermeable layers 1 and a water-barrier work 3 at the bottom, and its top face is covered with a crust-shaped roof 4. In addition, pumping/degassing pipes 7 for seepage water with degassing function, an underground water pumping pipe 8 and a garbage crane 9 are installed. The constitution enlarges the quantity of disposal for an areal expanse of a site, and prevents public nuisance like odor and polluted water, and lessens the time and labor required for maintenance and control.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure for disposing of waste discharged from general households in a landfill, and a waste disposal method.

[Problem to be solved by the invention]

In recent years, the amount of general waste generated by households has been increasing steadily, placing a heavy burden on local governments. This is not only due to an increase in processing costs, but the traditional method of landfilling directly on land owned by local governments causes environmental problems for local residents, and the current trend is to construct managed disposal sites. are doing.

Most controlled disposal sites involve shaping slopes in mountainous areas, placing rubber sheets on the ground surface, and then dumping the waste into a pile, while treating wastewater while separating groundwater and leachate.

On the other hand, in managed disposal sites built on reclaimed land or flat land near densely populated cities, the groundwater level is high, and after constructing impermeable walls with thin steel sheet piles up to the impermeable layer, internal excavation is necessary. After that, a rubber sheet was placed on the bottom and the slope, and
Waste is disposed of in a landfill, and at the same time, wastewater is treated while separating groundwater and leachate.

However, even these managed disposal sites have the following problems.

■ A large area (shallow bottom, wide mouth) is required for the capacity,
It is not suitable for areas near cities where land is scarce.

■ Because it is open to the atmosphere, it causes environmental problems such as odor, making it unsuitable for areas near urban areas where there are many residents.

■ - If a rubber sheet develops a defect, its function as a disposal site will be impaired, making it difficult to maintain and manage the sheet during landfilling.

This invention was made in view of the above circumstances. The purpose is to dispose of a large amount of waste compared to the land area, to eliminate the risk of deteriorating the environment in terms of sewage, odor, or landscape, to save time and effort in maintenance, and to dispose of waste in landfills. The purpose of the present invention is to propose a waste disposal structure and a waste disposal method that can be effectively used as a structure after disposal.

[Means to solve the problem]

The waste disposal structure of the present invention is characterized by having an underground cylindrical waste landfill space surrounded by an underground continuous wall that reaches an impermeable layer and provided with a wood shield at the bottom. do. Another waste disposal structure is claimed in claim 1.
The structure for waste disposal according to the present invention is characterized in that two parts of the structure for waste disposal as described in paragraph 1 are provided with a roof covering the upper surface. Another method for disposing of waste is to construct an underground cylindrical space that reaches the impermeable layer around it, dump the waste into this space, and remove the top surface of the space after filling it with a landfill. It is characterized by providing a covering floor body.

〔Example〕

As shown in Fig. 1, the waste disposal structure of this embodiment has a cylindrical shape and is surrounded by a continuous underground wall 2 that reaches an impermeable layer 1, with a water barrier 3 at the bottom and an upper wall at the top. It has a spherical roof 4 covering it, and has a cylindrical underground space 6 in which waste 5 is disposed of in a landfill. This underground space 6 includes a pumping gas venting pipe 7 for leachate that also has a gas venting function.
A pumping pipe 8 for underground water and a garbage crane 9 are installed and configured.

To construct this structure, as shown in Figure 2.3.4.5, a cylindrical underground wall 2 made of reinforced concrete with a depth that reaches the impermeable layer 1 is installed (see Figure 2). ). The interior is excavated while being reinforced with reinforced concrete rings 10 at predetermined height intervals, and the earth is lifted up using a vessel or the like (Figure 3). Note that the ring 10 may be unnecessary depending on conditions such as the size of the structure, ground conditions, and structure of the underground continuous wall. When the excavation reaches the specified depth, the first
As shown in the figure, crushed stone layer 11 for drainage, bottom slab concrete IJ -)
12 and a waterproof layer 3 are installed in an underground space 6 (70 mφ, 52 m deep) that is completely isolated from the groundwater in the external ground.
1 capacity 200,000 m') (Fig. 4). A roof 4 of reinforced concrete or steel structure is provided to cover the upper surface of this space 6 (FIG. 5), and equipment such as a garbage crane, exhaust/water pump, etc. are installed within the space 6.

Similar to conventional landfill sites, this structure is collected and transported from households, etc., and combustible materials are incinerated, and non-combustible materials are crushed and compressed to reduce their volume and are subject to landfill disposal. becomes.

When these wastes are emitted and landfilled, the underground space is filled to the brim and the original mission of the structure is completed, as shown in Figure 6.
Gas-impermeable gas tight sheet 1 covers the upper surface of underground space 6
3 is laid and covered, and a concrete floor 14 is poured on top of it to form a structure 15 with a roof 4 after waste disposal.

In addition, 16 in FIG. 6 is gas processing equipment. This structure 15 can be used as an all-weather multipurpose urban facility, for example, as shown in FIG.

In the above embodiment, a roof was attached to cover the top surface of the structure, but it is not necessarily necessary to provide a roof in areas isolated from urban areas. Depending on the situation, it may be enough to cover a simple waterproof sheet. Although the structure in the above embodiment has a cylindrical shape, it may have a rectangular cylindrical shape.

[Function] This invention has the above-mentioned configuration, and the waste disposal structure has a large-capacity landfill capacity despite the small surface area it occupies in order to utilize the deep underground space. Can be secured.

■Since it is surrounded by a continuous underground wall that connects to the impermeable layer, and a water-blocking ball is installed at the bottom, the underground space is reliably isolated from the groundwater, preventing the environment from being contaminated by leachate from the waste. Never. ■Since waste is buried in a cylindrical space underground, compared to conventional disposal sites, odors do not spread, the scenery is not spoiled, and the surrounding environment is not affected. It is more suitable to cover the top surface and provide a roof as in the example, and if the top surface is covered, rainwater will not enter the waste and the amount of leachate will not increase.
Maintenance management such as treatment of leachate does not require much effort and costs are low.

Furthermore, in the waste disposal method according to the present invention, waste is dumped into an underground cylindrical space and a floor is provided to cover the top of the space after filling it in a landfill, so that the waste inside is isolated from the outside. ,
Since only a small amount of gas is emitted, it can be safely disposed of in a landfill without harming the environment. Moreover, the structure after the floor body is installed can be effectively used as a sports facility, etc. by simple modification.

〔Effect of the invention〕

This invention is as described above, and has a large landfill capacity compared to the area it occupies, and there is no risk of damaging the surrounding environment even if it is constructed in a large city. Maintenance management is not labor-intensive and costs are low, and structures after waste disposal can be used effectively, reducing disposal costs.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a perspective view showing a cross section of a structure for waste disposal, and FIG. 2.3.4
．． , Figure 5 is a vertical cross-sectional view showing the construction process of the structure in order, Figure 6
The figure is a vertical sectional view of the post-waste disposal structure, and FIG. 7 is a perspective view, partially in section, of the post-waste disposal structure showing its usage as an urban facility. I... Impermeable layer, 2... Underground continuous wall, 3... Seepage control work, 4... Roof, 5... Waste, 6... Underground space, 7... Pumping gas vent pipe, 8... Pumping pipe, 9...
Garbage crane, IO...ring, II...crushed stone layer,
12...Bottom concrete, 13...Gas tight sheet, I4-...Floor concrete, 15...Structure after waste disposal, 16...Gas processing equipment. Figure 5 JP-A-3 36101 (6) Castle

Claims (3)

[Claims] (1) A waste disposal structure characterized by having an underground cylindrical waste landfill space surrounded by an underground continuous wall that reaches an impermeable layer and provided with an impermeable structure at the bottom. (2) A waste disposal structure characterized in that a roof is provided on the top of the waste disposal structure according to claim 1 to cover the upper surface. (3) Build an underground cylindrical space for waste landfill by surrounding it with a continuous underground wall that reaches the impermeable layer, and installing a water-blocking structure at the bottom, and dumping the waste within this space. A waste disposal method characterized by covering the upper surface of the space after filling the landfill with a floor.