JP5039671B2 - Waste disposal site - Google Patents

Description

  The present invention relates to a waste disposal site, and more particularly, to a waste disposal site having a semi-aerobic landfill structure.

  Generally, a semi-aerobic landfill structure is adopted in a waste disposal site (waste final disposal site). The semi-aerobic landfill structure is constructed by installing a water-impervious work on the inner surface of the disposal site and a drainage work on the upper part of the water-impervious work. The leachate from the waste is collected and discharged outside the disposal site, and air is taken from outside the disposal site and supplied to the waste to promote the decomposition of the waste.

  The impervious work is disposed of a water-impervious sheet made of a non-permeable material such as resin or rubber over the entire inner surface of the disposal site, and a non-woven fabric is laid on the upper part of the water-impervious sheet as necessary. The entire inner surface of the field is covered, and this impermeable structure prevents the leachate leached from the waste contained in the disposal site from flowing out to the ground side.

  The drainage works are made of natural stones such as crushed stones that surround the drainage pipes by laying a drainage pipe made of perforated pipes on the upper part of the impervious work made of water-impervious sheets laid on the inner surface of the disposal site. The collection drainage pipe is fixed to the upper part of the impervious construction, and the leachate leached from the waste contained in the disposal site is collected and discharged outside the disposal site. At the same time, air is taken in from outside the disposal site and supplied to the waste, thereby promoting the decomposition of the waste. In this case, the end of the drainage pipe is drawn out of the disposal site and connected to a treatment facility installed outside the disposal site.

And, by storing the waste in the disposal site of the waste disposal site equipped with the water-impervious work and drainage construction as described above, the leachate leached from the waste is collected and disposed of by the drainage pipe. In addition to being discharged out of the field, air is taken from outside the disposal site through the drainage pipe and supplied to the waste to promote the decomposition of the waste (see, for example, Patent Document 1).
JP 2002-192102 A

  By the way, in the waste disposal site configured as described above, the chestnut that fixes the drainage pipe of the drainage works is made up of natural stones such as crushed stones, etc. Therefore, many chestnuts having sharp corners on the surface are also mixed. For this reason, when the sharp corners of chestnut stone come into contact with the impervious sheet, the weight of the waste may be applied to the impervious sheet, which may damage or break the impervious sheet, and leaches out of the waste. There is a possibility that the leachate flows out to the ground side through the water shielding sheet and contaminates the surrounding environment.

  The present invention has been made in view of the conventional problems as described above, and the water impervious sheet or the like of the water impervious work is damaged or damaged by the chestnuts fixing the water collecting / draining pipes of the water collecting / draining work. The object of the present invention is to provide a waste disposal site that can maintain good water shielding performance that is stable over the long term.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a waste disposal site in which a water-impervious work is constructed on the inner surface of a disposal site that accommodates waste, and a drainage works are constructed on the upper part of the impermeable work, The work is a perforated drainage pipe laid in the upper part of the impermeable work, and a chestnut stone that is provided so as to surround the drainage pipe and fixes the drainage pipe to the upper part of the impermeable work wherein the Kuriishi is formed a corner pointed on the surface having no shape Rutotomoni, a plurality of the Kuriishi the top of the substrate are arranged in a predetermined pattern, integrally substrate and a plurality of said Kuriishi A plurality of pallet bodies are formed around the collection and drainage pipes so that the pallet bodies surround the circumference of the collection and drainage pipes, and a plurality of the chestnuts of the pallet bodies positioned above and below are engaged with each other. this that arranged in stages, to fix the collecting discharge pipe at the top of the water shield Engineering The features.

According to the waste disposal site of the present invention, the drainage pipe of the drainage drainage work is fixed to the upper part of the impermeable work by the chestnuts provided so as to surround the circumference of the drainage drainage pipe. In this case, Kuriishi is formed in a shape that does not have sharp corners on the surface, so even if the weight of waste is added to Kuriishi, the impervious work may be damaged or damaged by Kuriishi. No, stable and good water shielding performance by the water shielding work can be maintained for a long time.
In addition, the drainage pipe of the drainage collector is arranged so that the pallet body that integrates the board and a plurality of chestnut stones surrounds the circumference of the drainage pipe by arranging the chestnuts in a predetermined pattern on the upper part of the board. By this, it is fixed to the upper part of the impermeable work. In this case, Kuriishi is formed in a shape that does not have sharp corners on the surface, so even if the weight of waste is added to Kuriishi, the impervious work may be damaged or damaged by Kuriishi. No, stable and good water shielding performance by the water shielding work can be maintained for a long time. In addition, the use of the pallet body can reduce the labor required for the construction of the drainage work.
Furthermore, the upper and lower pallet bodies can be firmly connected to each other by arranging the pallet bodies in a plurality of stages around the drainage pipe so that the chestnuts of the pallet bodies located above and below are engaged with each other. It is possible to prevent the pallet body from shifting.

  The invention according to claim 2 is the waste disposal site according to claim 1, wherein the chestnut is formed in a substantially spherical shape or a substantially polyhedral shape.

  According to the waste disposal site according to the present invention, the chestnut stone is formed in a substantially spherical shape or a substantially polyhedral shape having no sharp corners on the surface, so even if the weight of waste is added to the chestnut stone, The impermeable work is not damaged or damaged, and stable and good impermeable performance by the impermeable work can be maintained for a long time.

  The invention according to claim 3 is the waste disposal site according to claim 1 or 2, wherein the chestnut is formed from a waste plastic material or a mixture of a waste plastic material and another resin material as a raw material. It is characterized by.

According to the waste disposal site according to the present invention, the chestnut is formed from a waste plastic material or a mixture of a waste plastic material and another resin material, so that the waste plastic material can be effectively used. . Moreover, since the weight of the chestnut can be reduced, the load burden of the impermeable construction can be reduced.
Furthermore, in the waste plastic waste disposal site, since only the plastic can be recovered at the stage where other decomposed products have disappeared and are in a cleaning state, it is possible to facilitate the recycling of plastic.

  The invention according to claim 4 is the waste disposal site according to any one of claims 1 to 3, wherein the chestnut stone is hollow or solid.

  According to the waste disposal site according to the present invention, the strength of the chestnut can be set to a desired value by forming the chestnut in a hollow or solid shape, and can be applied to various waste disposal sites. .

  The invention according to claim 5 is the waste disposal site according to any one of claims 1 to 4, wherein the chestnut has a particle size set in a range of 1 mm to 200 mm.

  According to the waste disposal site according to the present invention, the size of the gap formed between the chestnuts can be adjusted by setting the particle size of the chestnuts within the range of 1 mm to 200 mm, and the gap between the chestnuts can be adjusted. The amount of air circulation can be adjusted.

As described above, according to the waste disposal site of the present invention, the chestnut that fixes the drainage pipe of the drainage works to the upper part of the impermeable work has a shape that does not have sharp corners on the surface (for example, It is formed in a substantially spherical shape, a substantially polyhedral shape, etc., so even if the weight of the waste is added to the chestnut, it will not be damaged or damaged by the chestnut. Stable and good water shielding performance can be exhibited in the long term.
Further, by arranging a plurality of chestnuts in a predetermined pattern on the top of the substrate and using a pallet body in which the substrate and the plurality of chestnuts are integrated, it is possible to reduce the labor required for the construction of the drainage work. In this case, the upper and lower pallet bodies can be firmly joined to each other by arranging the pallet bodies in a plurality of stages around the drainage pipe so that the plurality of chestnuts of the pallet bodies positioned above and below are engaged with each other. It is possible to prevent the upper and lower pallet bodies from being displaced.
Moreover, since the chestnut stone is formed from a waste plastic material or a mixture of a waste plastic material and another resin material, the waste plastic material can be effectively used. Furthermore, since the weight of the chestnut can be reduced, it is possible to reduce the load of the impermeable work.
Further, in the waste plastic waste disposal site, only plastic can be recovered at the stage where other decomposed products disappear and are in a washed state, so that plastic resources can be easily recycled.
Moreover, since the strength of chestnut stone can be set to a predetermined value by making the chestnut stone hollow or solid, it can be applied to various waste disposal sites.
Furthermore, since the size of the gap formed between the chestnuts can be adjusted by setting the grain size of the chestnut to a predetermined value, the amount of air circulation through the gap between the chestnuts can be adjusted. It is possible to supply an appropriate amount of air necessary for the decomposition of the waste, and to promote the decomposition of various wastes.

Hereinafter, embodiments of the present invention shown in the drawings will be described.
1 to 3 show a first embodiment of a waste disposal site according to the present invention. FIG. 1 is a longitudinal sectional view showing the whole waste disposal site, and FIG. 2 is a part of FIG. FIG. 3 is an enlarged view and FIG. 3 is a partially enlarged view showing a modification of the waste disposal site.

  That is, the waste disposal site 1 is applied to the final waste disposal site, and is constructed on the entire inner surface of the concave disposal site 2 that accommodates the waste 10 as shown in FIGS. And a drainage work 5 constructed on the upper part of the impermeable work 3.

  The impervious work 3 is a sheet-like impermeable sheet 4 made of a water-impermeable material such as resin or rubber, which is laid over the entire inner surface of the disposal site 2 and covers the entire inner surface of the disposal site 2 And a nonwoven fabric is laid by the upper part of the water-impervious sheet 4 as needed (In this Embodiment, the example which has not laid the nonwoven fabric is shown). The leachate 3 containing the toxic substances leached from the waste 10 contained in the disposal site 2 is collected and discharged outside the disposal site 2 by the impermeable construction 3, and the leachate flows out to the ground 11 side. Be blocked.

  The drainage pipe 5 is laid down so as to surround the drainage pipe 6 around the drainage pipe 6 and the drainage pipe 6 laid on the upper part of the water barrier 3. It is comprised from the chestnut stone 7 fixed to the upper part.

  The drainage pipe 6 is composed of a perforated pipe having a plurality of holes penetrating between the inner and outer surfaces, and a plurality of the drainage pipes 6 are laid vertically and horizontally on the bottom surface of the disposal site 2 and the upper portion of the water barrier 3 on the slope. The drainage pipe 6 on the bottom surface of the disposal site 2 and the sloped drainage pipe 6 are connected to each other. The drainage pipe 6 laid on the slope is drawn out of the disposal site 2 and connected to a treatment facility (not shown) installed outside the disposal site 2.

  Each drainage pipe 6 is laid so as to have a predetermined distance from the upper surface of the water shielding sheet 4 of the water shielding work 3 and to be substantially parallel to the upper surface of the water shielding sheet 4. The chestnut stones 7 are laid out so as to surround the periphery of each of the 6, and the drainage pipes 6 are fixed to predetermined positions on the upper portion of the water shielding sheet 4 by the chestnut stones 7.

  A predetermined gap is formed between the chestnut stones 7 by spreading the chestnut stones 7 around the drainage pipes 6, and the waste accommodated in the plurality of holes of the drainage pipes 6 and the disposal site 2 through the gaps. 10, and the leachate from the waste 10 flows into the drainage pipes 6 through the gaps in the chestnut stone 7 and the holes of the drainage pipes 6. The air from 6 is supplied to the waste 10 through the plurality of holes of each drainage pipe 6 and the gaps between the chestnuts 7.

  Kuriishi 7 is formed using a waste plastic material as a raw material or a mixture of a waste plastic material and another resin material at a predetermined ratio as a raw material, and has no sharp corners on the surface. (For example, substantially spherical shape, polyhedron shape, etc.). In addition, when making Kuriishi 7 into a polyhedron shape, the corner | angular part of a polyhedron is dropped and it forms in a round surface.

  The chestnut 7 is formed in a hollow shape or a solid shape according to the type, weight, etc. of the waste 10 stored in the disposal site 2. In this case, the strength is set so as not to be deformed or damaged even when the weight of the waste 10 is added. The chestnut 7 is set to a desired size, for example, by setting the particle size within a range of 1 mm to 200 mm and setting the particle size to a desired value. can do. That is, when the gap between chestnut stones 7 is increased, the particle size is set large, and when it is decreased, the particle size is set small. Thus, the amount of air supplied to the waste 10 can be adjusted by adjusting the size of the gap between the chestnut stones 7.

  At a plurality of locations on the bottom surface of the disposal site 2, gas discharge pipes 8 made of perforated pipes similar to the drainage pipes 6 are erected vertically, and the waste 10 is decomposed through the gas discharge pipes 8. The generated gas is led out of the disposal site 2 and released into the atmosphere. In this case, a chestnut stone 7 is provided around the gas discharge pipe 8 so as to surround the gas discharge pipe 8 in the same manner as the drainage pipe 6, and the surface of the gas discharge pipe 8 is prevented from coming into direct contact with the waste 10. By comprising in this way, the gas from the waste material 10 can be collect | recovered efficiently.

  A water-permeable material such as sand or earth is spread over the water-impervious sheet 4 of the disposal site 2 with a predetermined thickness, and a protective layer 9 that covers the surface of the water-impervious sheet 4 is formed by the water-permeable material. By this protective feeding, it is possible to prevent protrusions or the like mixed in the waste 10 from coming into direct contact with the water shielding sheet 4 and causing the water shielding sheet 4 to be damaged or damaged.

  As shown in FIG. 3, instead of a water-permeable material such as sand or earth, a protective layer 9 may be formed by spreading chestnuts 7 having a small particle diameter of about 1 mm to 20 mm with a predetermined thickness. By forming the protective layer 9 with the chestnut 7 in this way, the waste plastic material can be effectively used and the weight of the protective layer 9 can be reduced, so that the load on the water shielding sheet 4 is reduced. Can be made.

  Then, by placing the waste 10 in the disposal site 2 of the waste disposal site 1 configured as described above, the leachate containing harmful components leached from the waste 10 is blocked by the disposal site 2. Collected in the water collection pipe 6 arranged on the upper part of the water sheet, discharged to the outside of the disposal site 2 through the water collection pipe 6, led to a treatment facility outside the disposal site 2, processed, detoxified, rivers, etc. To be discharged.

  Air taken into the collection / drainage pipe 6 from the outside of the disposal site 2 is guided into the disposal site 2 through the collection / drainage pipe 6, and through a plurality of holes in the collection / drainage pipe 6 and gaps between the chestnuts 7. It flows into the waste 10 and the decomposition of the waste 10 is promoted.

  Further, the gas generated when the waste 10 is decomposed is led out of the disposal site 2 through the gas discharge pipes 8 provided at a plurality of locations of the disposal site 2 and is released into the atmosphere. In the case of a gas containing a harmful component, the gas discharge pipe 8 may be connected to a treatment facility so that the gas is discharged into the atmosphere after being treated and rendered harmless in the treatment facility.

  In the waste disposal site 1 according to the present embodiment configured as described above, as a chestnut stone 7 for fixing the drainage pipe 6 to the upper part of the water shielding sheet 4, a shape having no sharp corners on the surface ( For example, a substantially steep shape, a substantially polyhedral shape, etc.) are used, so that even if the weight of the waste 10 stored in the disposal site 2 is added to the chestnut stone 7, the watertight sheet 4 is damaged by the chestnut stone 7. The stable and good water shielding performance by the water shielding sheet 4 can be maintained for a long time without being damaged or damaged.

  Moreover, since the waste plastic material is used as the raw material of the chestnut 7, the waste plastic material can be effectively used. Furthermore, since the weight of the chestnut stone 7 can be reduced, the load burden of the water shielding sheet 4 can be reduced.

  FIG. 4 shows a second embodiment of the waste disposal site according to the present embodiment, and this waste disposal site has a plurality of chestnuts arranged in a predetermined pattern on the upper part of the substrate. By constructing a pallet body in which the substrate and the plurality of chestnuts are integrated, and arranging the pallet body around the drainage pipe 6 in a plurality of stages so as to surround the drainage pipe 6, the drainage pipe 6 is It is configured to be fixed at a predetermined position on the upper part of the water-impervious sheet 4, and the other configuration is the same as that shown in the first embodiment.

  In this case, by arranging the pallet bodies in a plurality of stages around the drainage pipe so that the plurality of chestnuts of the pallet bodies located above and below can mesh with each other, the upper and lower pallet bodies can be firmly coupled to each other, It is possible to prevent the upper and lower pallet bodies from being displaced.

  Even in the waste disposal site according to the present embodiment configured as described above, the chestnut 7 that fixes the drainage pipe 6 to the upper part of the water shielding sheet 4 is the same as that shown in the first embodiment. Since the thing (for example, substantially steep shape, substantially polyhedral shape etc.) which does not have a sharp corner | angular part on the surface is used, the weight of the waste 10 accommodated in the disposal site 2 is the chestnut 7 Even if added, the water-impervious sheet 4 is not damaged or damaged by the chestnut stone 7, and stable and good water-impervious performance by the water-impervious sheet 4 can be maintained for a long time.

  Moreover, since the waste plastic material is used as the raw material of the chestnut 7, the waste plastic material can be effectively used. Furthermore, since the weight of the chestnut stone 7 can be reduced, the load burden of the water shielding sheet 4 can be reduced.

  Furthermore, in this embodiment, when fixing the drainage pipe to the upper part of the water shielding sheet, a plurality of chestnuts are arranged in a predetermined pattern on the top of the board, and the board and the plurality of chestnuts are integrated. Since the pallet body is used, the labor required for the construction of the drainage can be reduced.

It is the longitudinal cross-sectional view which showed the whole 1st Embodiment of the waste disposal site by this invention. It is the elements on larger scale of FIG. It is the elements on larger scale which showed the modification of the waste disposal site of 1st Embodiment. It is the elements on larger scale which showed 2nd Embodiment of the waste disposal site by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waste disposal site 2 Disposal site 3 Water-impervious work 4 Water-impervious sheet 5 Collection drainage 6 Collection drainage pipe 7 Kuriishi 8 Gas discharge pipe 9 Protective layer 10 Waste 11 Ground 15 Pallet body 16 Substrate

Claims (5)

A waste disposal site in which a water-impervious work is constructed on the inner surface of a disposal site that accommodates waste, and a drainage work is constructed on the upper part of the impermeable work,
The drainage is provided with a perforated drainage pipe laid on the upper part of the impermeable work and surrounding the drainage pipe, and the drainage pipe is fixed to the upper part of the impermeable work With Kuriishi,
The Kuriishi is Rutotomoni formed corners pointed to the surface having no shape, by arranging a plurality of the Kuriishi on top of the substrate in a predetermined pattern, by integrating the substrate and a plurality of said Kuriishi pallet The pallet body is arranged in a plurality of stages around the collection and drainage pipe so that the pallet body surrounds the circumference of the collection and drainage pipe, and the plurality of chestnuts of the pallet body positioned above and below are engaged with each other And a waste disposal site , wherein the drainage pipe is fixed to an upper portion of the impermeable construction .   2. The waste disposal site according to claim 1, wherein the chestnut is formed in a substantially spherical shape or a substantially polyhedral shape.   The waste disposal site according to claim 1 or 2, wherein the chestnut is formed from a waste plastic material or a mixture of a waste plastic material and another resin material.   The waste disposal site according to any one of claims 1 to 3, wherein the chestnut is hollow or solid.   5. The waste disposal site according to claim 1, wherein the chestnut has a particle size set in a range of 1 mm to 200 mm.

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