JPH11221539A - Method for effectively utilizing vitrified material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the method for effectively utilizing the solidified glass material by which the amt. of waste to be finally stored in a waste disposal plant is minimized, and the life of the plant is prolonged. SOLUTION: Intermediate treating equipment 10 including waste vitrifying equipment 40 is set close to the waste disposal plant 1 having waste receiving and delivering equipment 11 and 12 divided by partition walls into plural sections Z and for storing waste in the respective sections Z. The waste to be intermediately treated is temporarily placed in the sections ZR of the plant 1, then transferred to the intermediate treating equipment 10 and melted and vitrified in the vitrifying equipment 40, and the vitrified material is used as the structure material of the waste disposal plant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for effectively using a vitrified material, and more particularly, to a method for installing waste brought into a waste disposal site such as a managed waste final disposal site adjacent to the disposal site. The present invention also relates to a method for effectively utilizing a vitrified product which is melted and vitrified in a vitrifying device as an intermediate treatment facility, and the obtained vitrified product is used as a structural material of a waste disposal site.

[0002]

2. Description of the Related Art Conventionally, general waste such as household waste and non-combustible waste and industrial waste discharged from factories have been subjected to intermediate treatment for final landfill such as incineration and volume reduction. After being disposed of, the final waste is transported to the landfill for managed waste disposal and landfilled.

[0003]

However, in recent years,
Emissions of general and industrial wastes are increasing only, and there is a shortage of disposal sites, and it is extremely difficult to set up new disposal sites to deal with them due to environmental protection. Are coming. Therefore, it is desired to extend the life of the waste disposal site.

Conventionally, intermediate treatment facilities for intermediate treatment, such as incineration, volume reduction, detoxification, etc., for final disposal of waste at a final disposal site such as storage and landfill, have been used in the final disposal site. In addition to this, the final waste after the intermediate treatment is required to be transported, and the transportation cost is high, which hinders the smooth disposal of the waste.

[0005] The present invention has been made in view of the above-mentioned problems, and provides a method for vitrifying waste and effectively using the obtained vitrified material as a structural material of a waste disposal site.
It is an object of the present invention to provide a vitrified material that can minimize the amount of waste to be finally stored (landfilled) at a disposal site, and to provide a method for effectively utilizing waste.

[0006]

In order to achieve the above object, the present invention has the following arrangement.

[0007] (1) Using a waste disposal site installed close to an intermediate treatment facility, temporarily placing the waste to be intermediately treated by the intermediate treatment facility in the waste disposal site, and disposing the temporarily disposed waste. The material is transferred to an intermediate treatment facility including a vitrification facility,
The waste was melted and vitrified in the vitrification facility, and the obtained vitrified material was used as a structural material for a waste disposal site.

(2) Divided into a plurality of sections by partition walls,
Having a waste receiving and discharging facility in each of the compartments,
Using a waste disposal site in which an intermediate treatment facility including a vitrification facility for waste is installed in close proximity, temporarily placing waste to be subjected to intermediate treatment in a section of the waste disposal site, and temporarily placing the waste Was transferred to the intermediate treatment facility, melted and vitrified in the vitrification facility, and the obtained vitrified material was used as a structural material for a waste disposal site.

(3) In the above-mentioned method (2) for effectively utilizing the vitrified waste, the waste receiving and dispensing equipment provided in each section of the waste disposal site where the waste to be subjected to the intermediate treatment is temporarily placed, It was configured as a conveyor and / or a traveling lift provided above the partition that defines the compartment.

(4) In the above method (2) or (3), the intermediate treatment facility may be a combustion incineration facility and an electric resistance which melts and vitrifies ash generated in the combustion incineration facility. And a crusher for crushing the vitrified material obtained by the vitrification equipment, and a crushed product of the vitrified material crushed by the crusher once removes the waste to be subjected to the intermediate treatment. Temporarily placing the temporary disposal waste disposal site in a different section from the temporary storage section, and using the temporarily placed crushed product as a structural material as a structural material for expansion of the waste disposal site or other It is configured to be used as structural material for a new disposal site.

However, in the method for effectively utilizing the vitrified product having the constitution (1), the vitrified product obtained by the vitrification facility of the intermediate treatment facility is installed, for example, by installing the intermediate treatment facility close to the intermediate treatment facility. As a structural material of a disposal site (hereinafter also referred to as a former disposal site) for temporarily storing (temporarily storing) waste to be treated, as a structural material for adding to the former disposal site, or adjacent to the former disposal site By using it as a structural material for other newly constructed disposal sites, for example, by minimizing the amount of waste to be stored (landfilled) in the original disposal site, and thus in the newly constructed disposal site or the newly constructed disposal site can do.

Further, since the vitrification equipment is provided as an intermediate treatment equipment, the volume can be significantly reduced by melting and vitrifying the waste in the equipment. The final disposal (disposal) disposal at the disposal site will greatly extend the life of the disposal site. Therefore, the use of the obtained vitrified body as a structural material of the above-mentioned disposal site significantly prolongs the life of the disposal site.

According to this method, the intermediate treatment facility is installed near the waste disposal site, and the waste to be intermediately treated by the intermediate treatment facility is temporarily placed in the disposal site. In this way, waste can be collected and intermediate treatment can be performed on the spot, and a storage place for waste for intermediate treatment as in the related art is not required, and the disposal site itself is effectively used. Also,
Compared with the conventional case where the intermediate treatment facility and the disposal site are located far apart from each other, the time and labor for transporting the waste after the intermediate treatment to the disposal site are not required, and the distribution cost is reduced.

The configuration (2) provides the following operation in addition to the operation (1). Since the waste disposal site is divided into a plurality of sections, the intermediate waste is intermediaryly treated by an intermediate treatment facility installed in close proximity, and the waste is utilized by using any of the plurality of sections. Temporary storage is possible, and it is possible to easily distinguish and manage the temporary storage section for intermediate treatment waste and the section for landfilling final waste such as after intermediate treatment. In addition, when temporarily placing intermediate treatment waste in the section and paying out from the section, receiving and paying equipment provided in each section can efficiently receive and pay out the section.

[0015] Since the disposal site is divided into small sections, the temporary storage of the waste is performed in the section or in a predetermined area (location) in the section according to the type and / or property of the waste. It is possible to sort and place temporarily. In order to temporarily place for a fixed period or a fixed time in each of the above-mentioned sections or in predetermined sections in a section for a certain period or for a certain time, it is possible to homogenize the components by devising storage methods such as stacking, etc. Mix with stored waste and adjust ingredients. Therefore, it is possible to feed the component waste stably without being affected by the component variation for each receiving lot, for example, to a combustion incineration facility, a vitrification facility, or the like as an intermediate treatment facility.

[0016] Since the disposal site is formed with a plurality of compartments, the amount of leachate treatment required for draining into public waters can be significantly reduced. That is, in a conventional disposal site, it is common to perform a wastewater treatment in a state where leachate and rainwater are mixed without distinction, but in the present invention, a compartment in which waste is stored (landfilled), Since the other sections are clearly distinguished, a leachate drain and a rainwater drain are separately provided in a position close to the section, and for example, leachate discharged from the waste in the section where the waste is stored is the same. The storm water is drained through a leachate drain, and rainwater generated (falling) in a compartment that has not yet received waste is drained through the storm drain, for example. By allowing the leachate to be discharged from the repository without mixing, the leachate treatment load can be significantly reduced.

In the configuration of (3), the following operation is further achieved in addition to the operation of (2). Since a receiving and dispensing facility consisting of a conveyor and a traveling lift is provided on the partition that defines the section, there is no need to provide a long receiving and dispensing facility such as a belt conveyor inside the section, and the inside of the section is effectively temporarily placed, In addition to being used for storage (landfill) and the like, the partition is provided with a receiving and dispensing facility, so that the partition can be effectively used, and from this point, the disposal site can be effectively used.

Further, since a belt conveyor and a traveling lift are provided as waste receiving / discharging equipment, the waste for temporary storage is classified according to the form such as bulk materials, drums, and the like, so that the receiving and discharging operations at the disposal site can be performed. Efficiency can be improved. When the traveling lift is a lift provided with a boom rotatably provided in a horizontal plane, it is possible to receive and discharge waste in adjacent sections, thereby simplifying the receiving and discharging facility.

In the above configuration (4), the following operation is further achieved in addition to the operation of the above (3). Intermediate treatment equipment consists of combustion incineration equipment, electric resistance heating equipment as vitrification equipment, and crusher, so that combustion incineration and / or molten vitrification can be performed according to the type and properties of various wastes. It is possible to significantly reduce the amount of waste (ash or slag as vitrified material) stored in the disposal site by reducing the volume by burning and incineration of the waste and reducing the volume by melting and vitrifying, The ash after incineration is melted and vitrified by an electric resistance heating facility, so that the ash can be further reduced in volume and made harmless.

The vitrified product is crushed to a predetermined particle size by a crusher and used as an aggregate as a structural material for a disposal site or the like. In this use, the crushed product is temporarily stored in a separate section from the temporary storage section of the intermediate treatment waste in the disposal site. The temporary storage of the crushed product in the compartment can be clearly distinguished from the temporary storage of intermediate treatment waste due to the formation of a plurality of compartments in the disposal site. Landfill), temporary storage management is easy, and the disposal site itself is effectively used.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings relate to an embodiment of the present invention, and FIG. 1 shows a managed waste final disposal site as a waste disposal site applied to a method for effectively utilizing a vitrified product according to the present invention. FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1, FIG. 3 is an enlarged plan view of a main part of FIG. 1, and FIG.
FIG. 5 is a sectional view of the waste disposal site of FIG.
It is the fragmentary enlarged perspective view cut | disconnected by-C line and seen from diagonally upward.

FIG. 6 shows that the waste is received at the final disposal site by the waste receiving facility and temporarily stored (temporarily stored), and the temporarily placed waste is sent to the intermediate processing facility by the dispensing facility for intermediate treatment. The waste (final waste) after treatment is returned to the disposal site for storage (landfill), and the crushed vitrified product is returned to the disposal site and temporarily disposed when used as a structural material. It is a block diagram showing the flow of goods or structural materials, and shows an example of the state of acceptance of various types of waste for intermediate treatment temporarily placed in a disposal site, the flow of intermediate treatment in intermediate treatment equipment, FIG. 4 is an explanatory view of forming a disposal site using a vitrified body as a structural material. FIG. 7 is a longitudinal sectional view illustrating a schematic configuration of an electric resistance heating furnace as a vitrification facility, and FIG.
FIG. 5 is a cross-sectional view corresponding to FIG. 4, illustrating a collection point of rainwater and leachate in a section where temporary storage and the like have been completed.

As shown in FIG. 1, a managed waste final disposal site (hereinafter sometimes simply referred to as a disposal site 1) is provided with a rainwater drain 2 at the center and a leachate drain at the both sides thereof in a top view. Grooves 3 and 3 are provided side by side, and waste receiving portions are provided on the left and right sides on both sides of the drain grooves 2 and 3, and a plurality of partitions Z are formed by the partition walls 2 in each of the waste receiving portions. Thus, it is configured. Each section Z is formed to extend in a direction crossing the longitudinal direction of the drain grooves 2 and 3.

Then, as shown in FIG. 2, in the disposal site 1, the waste receiving part forming each section Z has a ground surface (GL).
The outer embankment 1A is embanked upward from above to form a depression at the top of the surface of the ground, and the bottom of the depression and the boundary between the slope EA and the ground EA along the dam 1A of the disposal site 1 are rubber-like. Alternatively, a water-blocking material 5 formed of a mat or the like of an asphalt site is laid so that the leachate does not penetrate into the ground EA. The partition 2 defining the section Z has a height substantially extending to the surface of the ground. The partition 2 that defines the section Z is approximately the height of the bank 1A of the disposal site. In addition,
The dam 1A of the disposal site 1 may be formed by projecting a wall with concrete, and the lower part of the water shield 5 at the bottom of the depression of the disposal site 1 may be formed of a concrete base.

A protective layer (protective material) 6 of a predetermined thickness, which is made of soil mixed with sand and allows the permeation of water, is formed on the upper part of the water shielding material 5 and is compacted at a predetermined pressure. The protection layer 6 is configured to prevent the waste from directly colliding with the water barrier 5 when the waste is put into the pit of each section Z, thereby preventing the water barrier 5 from being damaged. You.

The protective layer 6 and the upper surface of the protective layer 6 constituting the bottom surface 6a of the disposal site 1 are easy for water to flow toward the drains 3 and 4 on the upper surface and inside of the protective layer. For this purpose, a slope of, for example, about 1/200 is provided so as to decrease toward the drain grooves 3 and 4. A plurality of leachate drain holes 7 are provided through the side wall 3a on the side wall 3a on the side where the section Z of the leachate drain groove 3 is located. The opening on the section Z side of the leachate drainage hole 7 faces the protective layer 6 and communicates with the inside of the protective layer 6, and water such as leachate penetrating the inside of the protective layer 6 is supplied to the leachate drainage hole. It is configured to be able to be guided to the leachate drain 3 through 7.

As shown in FIG. 4, the two leachate drainage grooves 3, 3 and the rainwater drainage groove 4 are each formed in a U-shape and similar to each other with a cross section open at the top. The side wall 3a located on the section Z side and the other side wall 3b have the same height, and the side walls on both sides as the rainwater drainage groove 4 are also configured as the side walls 3b. Disposal site 1
The height of the connection point of the upper surface of the protective layer 6 constituting the bottom surface 6a of the leaching water drainage groove 3 to the side wall 3a is substantially equal to the height of the side wall 3a. That is, the connection point on the upper surface of the protective layer 6 has a height substantially equal to the side wall 3 a of the leachate drainage groove 3.

Although the number of sections Z is not particularly limited, it is determined by comprehensively taking into account, for example, the annual scheduled throughput, the useful life, the type and capacity of the intermediate processing facility installed in the intermediate processing facility 10, and the like. Generally, it is desirable to divide into 10 to 30 sections Z. Each section Z is divided by the partition 2 as described above, so that rainwater does not seep into other sections Z.

On the other hand, in the waste disposal site 1 constructed as described above, the intermediate treatment facility 1 is located at a position close to the disposal site 1.
0 is set. In this embodiment, as shown in FIG. 6, the intermediate treatment facility 10 includes a combustion incinerator 30 including a fluidized bed incinerator or a fluidized bed boiler, an electric resistance heating furnace 40 as a vitrification facility, and crushing. A machine (crusher) 50 is provided.

As shown in FIG. 5, a belt conveyor 11 or a traveling lift 12 is provided at each section Z of the disposal site 1 on the top of the partition walls 2 on both sides of the section Z, thereby reducing waste. Receiving and dispensing facilities are provided. In addition, as the receiving and dispensing equipment, equipment corresponding to the receiving cargo type is provided in each section. For bulk waste, in addition to the belt conveyor 11, a transport heavy machine 13 such as a shovel loader (car) or a bulldozer is used. For drums, containers and bagged waste,
In addition to the traveling lift 12, a forklift or the like is used as a transport heavy machine.

A belt conveyor 11 for receiving or discharging waste and a rail 12d laid in the longitudinal direction of the top of the partition 2 are provided on the walls of the partition 2 on both sides defining the section Z, that is, on the top. A lift 12 which is provided so as to be able to travel reciprocally is attached. The lift 12 is provided with a boom 12b facing a section Z and supported rotatably in a horizontal plane on a lift main body 12a, and a tip end boom is provided at a tip end of the boom 12b with respect to the boom 12b. It is provided so as to be telescopically fitted.

A waste hanging rope having a hook 12c at the lower end is provided on the tip boom so as to extend and contract freely via a sheave. Therefore, by moving the lift 12 along the longitudinal direction of the partition wall 2 and rotating the boom 12b, waste is loaded (received) or unloaded into and from the sections Z adjacent to both sides of the partition wall 2 on which the traveling rail 12d is mounted. (Payout).

The belt conveyor 11 is of a reversible type,
In order to receive waste for intermediate treatment from the outside and place it temporarily in a section ZR, which is a temporary storage section for waste for intermediate processing, that is, for temporary storage or for intermediate treatment of waste temporarily placed in the section ZR. It is configured to be able to pay out.

Receiving waste for temporary storage in each section ZR is performed by placing the belt conveyor 11 in each section Z at the outer end of the disposal site (the end opposite to the drains 2 and 3) by a truck or shovel. A waste transporting vehicle such as a loader transfers and transports waste introduced from the outside to a predetermined position in the compartment by the belt conveyor 11, and separates bulk waste by a cutting device (not shown). The waste in the drums, bags and containers is lifted on the conveyor 11 by the lift 12 and unloaded into the compartment.

Storage of said bulk waste in compartment ZR;
For work such as stacking, a heavy loader 13 such as a shovel loader (car) or a bulldozer carried in from a heavy equipment carry-in port (not shown) in the section Z is also used as a receiving and dispensing facility.

The waste containing the drums, bags and containers is discharged from a waste transporting vehicle such as a truck or shovel loader at the outer end of the disposal site (the end opposite to the drains 2 and 3). And lifts the lift 12 directly on the traveling rail 12d inside the compartment (disposal site) to rotate or tilt the boom 12b at a predetermined position, and lowers the hook 12c to temporarily move the boom 12c to a predetermined storage location. It can also be placed.

When the waste temporarily placed in the predetermined section ZR is transferred to the intermediate treatment facility 10, the waste is similarly discharged from the section ZR using the belt conveyor 11 and / or the lift 12, and the outer end of the disposal site ( (The end opposite to drain grooves 2 and 3)
To transfer the waste to a waste transporting vehicle such as a truck or shovel loader, and transport it into the intermediate treatment facility 10. Further, when the ash or vitrified waste as the final waste after being treated in the intermediate treatment facility 10 is returned to the storage (landfill) section ZU for landfilling (storage) or a crushed product of the vitrified body When using the waste as a structural material for the disposal site, when returning to the zone ZRP, which is a temporary storage site for the structural material for the disposal site, and temporarily storing the same, the outer end of the disposal site (drain grooves 2, 3) To the belt conveyor 1
1 and / or lift 12 to transfer to the landfill zone ZU or temporary storage zone ZRP.

As shown by the two-dot chain line in FIG. 1, the dam 1 at the outer end of the disposal site 1 (the end opposite to the drains 3 and 4).
A separate reversible belt conveyor BC1, B along A
C2 may be provided, and the waste may be transferred to a belt conveyor 11 or a lift 12 provided on the top of the partition wall 2 via the conveyors BC1 and BC2 to convey waste to a predetermined position in a predetermined section. Such a conveyor BC
1, when the BC2 is installed, the unloading point from the waste transporting vehicle such as a truck or an excavator loader may be one in each of the left waste receiving part and the right waste receiving part in FIG.

Further, as shown by a two-dot chain line in FIG. 1, the reversible traveling type belt conveyor BC3 is connected to the belt conveyor BC3.
1 and the position near the intermediate treatment facility 10, the waste temporarily placed in the section ZR of the left waste receiving section in FIG. 1 is discharged from the section ZR to remove the conveyor BC1. The intermediate waste is transported to the intermediate treatment facility 10 via a conveyor BC.
1 when returning to the section ZU of the waste receiving section on the left side of the disposal site 1 for landfilling (storage), or the intermediate treatment facility 1
It can be used, for example, when a crushed product of the vitrified material that has been melt-solidified at 0 is temporarily stored in the structural material temporary storage section ZRP of the disposal site 1. When the belt conveyors BC1, BC2, and BC3 are used as described above, vehicles for transporting waste such as trucks and shovel loaders are required during bidirectional transport between the intermediate treatment facility 10 and the disposal site 1. No longer.

By arranging one end of the conveyor BC2 near the intermediate processing facility 10, the waste temporarily placed in the waste receiving section ZR on the right side in FIG. Transport or intermediate processing equipment 10
The intermediate waste is returned to the section ZU for landfilling, or the crushed product of the vitrified molten glass solidified in the intermediate treatment facility 10 is temporarily put into the structural material storage section ZR of the disposal site 1.
P can be temporarily stored.

As described above, in the present embodiment, as shown in FIG. 1 or FIG. 6, when the waste is intermediately treated, a part of the disposal site ZR having a large number of compartments Z divided by the partition walls 2 is used. A vitrified material that is used as a temporary storage (temporary storage) place for the waste, another section ZU is used for storage (landfill), and another section ZRP is molten and vitrified in the intermediate treatment facility 10. Used for temporary storage of crushed products.

As shown in FIG. 6, the intermediate treatment waste temporarily stored in the section ZR of the disposal site 1 for the intermediate treatment is in the form of bulk, drums, bags, containers, and the like. Classified separately. Examples of the bulk waste include sludge, paper waste, wood waste, metal waste, waste plastics (waste plastic), and rice cake. The waste in the drum can includes, for example, waste oil, waste acid, waste alkali, waste solvent, and the like. Examples of the bagged waste include incinerated ash, paper waste, waste plastic, waste agricultural chemicals, and the like. Examples of waste in containers include incinerated ash, paper waste, waste plastic, waste catalyst, and the like.

The wastes classified according to their form and type are received in the disposal site 1 in a flow as shown in FIG. 6, temporarily stored (temporarily stored) in the section ZR, discharged, and discharged. The intermediate treatment equipment 10 performs an intermediate treatment such as a combustion incineration treatment and / or a melt vitrification treatment, and the waste after the intermediate treatment is returned to the section ZU of the disposal site 1 and finally processed. It is either stored (landfilled) or returned to the structural material temporary storage section ZRP for temporary storage.

At the time of receiving the waste for the first intermediate treatment into the disposal site 1, the division of the disposal site 1 or the designation within the division is performed according to the form and type, and the waste is received at each designated place. Can be Then, the wastes classified according to their forms and types and designated storage locations are transferred from the waste transport vehicle to the belt conveyor 11 located in a predetermined zone ZR where the wastes in the disposal site 1 are temporarily stored. After being loaded and transported to the storage position of the section ZR, the bulk waste is dropped into a predetermined storage location of the section ZR by a cutting device (not shown) attached to the conveyor 5 and temporarily stored. The waste in the bag, the bag, and the container is lifted from the conveyor 5 by the lift 12 and is temporarily stored in a predetermined storage location in the section ZR.

The waste classified by form such as the drum can is directly received by a lift 12 facing a predetermined section ZR temporarily stored from a waste transporting vehicle, and the waste is directly received by the lift 12. It can also be temporarily stored in a predetermined storage location in the section ZR. In this way, the wastes are successively carried into predetermined storage locations where sorting is designated in advance in the section ZR for each form or type, and are temporarily stored (temporarily stored).

When the waste is temporarily stored in a predetermined section ZR, the waste is individually transferred from a transport vehicle to an individual belt conveyor 11 or lift 12 installed on the top of the partition 2 in each section ZR. Instead, if the reversible traveling belt conveyors BC1 and BC2 are installed and used, the waste brought from outside to the disposal site 1 by a transportation vehicle may be transferred to one of the conveyors BC1 or BC2. Therefore, waste receiving work efficiency is improved.

When the temporarily placed waste is transferred from the section ZR to the intermediate treatment facility 10, the type, properties and quantity of the waste according to the intermediate treatment in the combustion and incineration facility 30 and the vitrification facility 40 of the intermediate treatment facility 10 are determined. The waste is discharged from the compartment ZR in the reverse order of the receiving. That is, bulk materials from the temporary storage area of the section ZR are transferred by a receiving and dispensing facility consisting of a conveyor heavy machine 13 such as a shovel loader and a forklift and a belt conveyor 11, and drums, bags, containers and the like are loaded on a lift 12 or a belt conveyor. Predetermined waste is discharged by the receiving and discharging facility 11, transferred to a waste transport vehicle at a position outside the disposal site 1 of the lift 12 or the belt conveyor 11, and sent to the intermediate treatment facility 10.

When the temporarily disposed waste is transferred from the section ZR to the intermediate treatment equipment 10, if the reversible traveling belt conveyors BC1, BC2, and BC3 are installed and used, the lift can be lifted as described above. 12 or belt conveyor 11
There is no need to reload the waste transport vehicle at the outer end position of the disposal site 1, and the dispensing efficiency is improved.

In the intermediate treatment facility 10, as shown in FIG. 6, of the waste temporarily stored in the temporary storage section ZR, for example, sludge, paper waste, wood waste, waste plastic, waste oil, waste acid, waste solvent, waste alkali, etc. , Grit, garbage, etc. are sent to the combustion and incineration facility 30 for incineration. Then, part of the incinerated ash is returned to the storage section ZU of the disposal site 1 for storage (landfill) disposal as described above, and the rest is put into the electric resistance heating equipment 40 as vitrification equipment and melted. You. Temporary storage section Z
Among the waste temporarily placed in R, incinerated ash, waste pesticides, waste catalyst, metal scraps, rice hulls, etc. are supplied to the electric resistance heating equipment 4.
0 and is converted into molten slag together with the incineration ash of the combustion and incineration equipment 30.

FIG. 7 shows a schematic configuration of the electric resistance heating equipment 40 as the vitrification equipment.
The electrodes 42, 42 are inserted into a waste layer such as the incinerated ash supplied from the inlet port 45 and deposited, and the power supply 4
The waste is melted by Joule heat generated by energizing the electrodes 42, 42 by 2a, and a molten slag MS layer is formed at the lower part of the furnace body.

The molten slag MS is gradually cooled after being taken out from the slag outlet 43 on the lower side wall of the furnace body to become large crystal grains and to generate vitrified material having strong physical properties. In this way, the waste such as ash put into the electric resistance heating equipment 40 is reduced in volume and made harmless. The gas generated by the melting is discharged from the discharge port 46 to the outside of the furnace and is detoxified.

The vitrified material produced as described above is supplied to a crusher 50 of the intermediate treatment facility 10 and crushed to a predetermined particle size as an aggregate for a structural material of a disposal site. Although not shown in FIG. 6, a sorting / sieving device such as a sieve and a mixing device such as a sieve are installed downstream of the crusher 50 to collect a product having a particle size equal to or less than a predetermined particle size as a product. The material is returned to the crusher 50 again to be crushed again to obtain a crushed product of a vitrified body having a desired particle size distribution (configuration) as an aggregate. In addition, a part of the vitrified matter generated as described above is returned to the storage section ZU of the disposal site 1 as final waste without being charged into the crusher 50.

The combustion incinerator 30 of the intermediate treatment facility 10
Of the combustion ash (incineration ash) after incineration in the above, or a part of the vitrified material obtained by melting the combustion ash and the like in the electric resistance heating equipment 40 as intermediate waste treatment waste 1 as final landfill waste
0, the waste is transported by a waste transport vehicle, further transferred to a belt conveyor 5 or a lift 12 on a partition 2 of a predetermined landfill section ZU of the disposal site 1 and transported, and dropped at a predetermined position in the section ZU. It is carried into the zone ZU and landfilled.

The crushed vitrified product used as a structural material for the disposal site as described above is also used in the intermediate treatment facility 1.
0, the waste is transported by a waste transport vehicle, and further transferred to a belt conveyor 5 or a lift 12 on a partition 2 of a predetermined temporary storage section ZRP of the disposal site 1 and transported there.
It is carried into the section ZRP by being dropped at a predetermined position of P and temporarily placed.

In the return transport of the final waste after the intermediate treatment by the intermediate treatment facility 10 and the crushed product of the vitrified product used as the structural material of the disposal site to the disposal site 1 as described above, Traveling belt conveyor BC1, BC
2. If BC3 is installed and used, as described above, the lift 12 or the belt conveyor 11 facing the landfill section ZU or the temporary storage section ZRP is moved from the waste transport vehicle to the lift end or the belt conveyor 11 at the outer end position of the disposal site 1. This eliminates the need for transshipment, and improves the efficiency of receiving final waste and crushed vitrified products.

In this embodiment, since the waste to be intermediately treated in each section ZR can be temporarily stored for a certain period of time, the method of temporarily storing the waste, for example, the method of stacking, can improve the composition of the waste. Can be homogenized, and the components can be adjusted by, for example, mixing with waste temporarily placed at another location in the same section ZR. Therefore, the combustion incinerator 30 and the vitrification facility 40 of the intermediate treatment facility 10
Thus, stable feed of component waste can be performed without being affected by component fluctuation for each receiving lot.

In this embodiment, since the intermediate treatment facility 10 is provided close to the disposal site 1, the intermediate waste is finally disposed of in the managed waste final disposal site 1 before landfill. Since the volume can be reduced by performing an intermediate treatment, for example, a combustion incineration treatment and / or a vitrification treatment, in the treatment facility 10, the amount of waste finally to be landfilled at the disposal site depends on the capacity of the intermediate treatment facility. Although it differs depending on the type, the volume is reduced, for example, by a factor of 1 to 30 compared to the conventional disposal site.
The life of the disposal site 1 can be significantly prolonged.

Further, in this embodiment, the crushed product of the vitrified material is reused as a structural material of the repository, so that the amount of waste to be finally stored (landfilled) in the repository 1 can be minimized. Accordingly, the life of the disposal site 1 can be significantly prolonged in combination with the reduction of the volume of waste by the intermediate treatment facility 10. In addition, the crushed product of the vitrified material and the waste for intermediate treatment are respectively divided into zones ZRP,
Since the temporary storage is performed using the ZR, the disposal site 1 is effectively used.

Further, the disposal site 1 is divided into small sections to form sections, and the sections are used as the temporary storage areas, whereby the intermediate processing waste temporary storage section ZR and the final waste after intermediate processing are disposed. The distinction management of the landfill section ZU of the article and the temporary placement section ZRP of the vitrified crushed product becomes easy. Also,
By installing a waste receiving / discharging facility including a belt conveyor 11 and a lift 12 on a partition 2 that defines a section Z of the disposal site 1, the disposal site can be effectively used.

Then, the waste receiving and dispensing equipment is connected to a lift 12 running on the partition wall 2 defining the section Z, a belt conveyor 11 installed on the partition wall 2, or another embodiment as described above. Belt conveyor BC1, BC2,
By using BC3, it is possible to improve the efficiency of waste collection and payment.

In this embodiment, the intermediate processing equipment 10
Is disposed in a place close to the disposal site 1, the distance between the disposal site 1, which is a temporary storage site, and the intermediate treatment facility 10 is remarkably reduced, and the waste for intermediate treatment from the disposal site 1 to the intermediate treatment facility 10 is removed. The transportation and the final waste for landfill intermediately treated by the intermediate treatment facility 10 are transported to the disposal site 1, and the crushed vitrified products used as structural materials of the disposal site are transported to the disposal site 1. The efficiency is significantly reduced, and the efficiency of waste transfer between the disposal site 1 and the intermediate treatment facility 10 is improved. The transportation by the waste transport vehicle such as a truck between the disposal site 1 and the intermediate treatment facility 10 is performed by the belt conveyors BC1, BC2, and B shown in the above-described other embodiments.
It can be eliminated by installing C3, and the efficiency of waste collection and payment can be improved.

Further, since the disposal site 1 of this embodiment has a plurality of sections Z, the section U receiving the waste is provided.
Z and the compartment UNZ that has not yet received waste can be clearly distinguished by the partition wall 2. For this reason, as shown in FIGS. 3 and 4, for a section UNZ that has not yet received waste, a rainwater guide lid 8 is provided at the upper opening of the leachate drain 3 facing the section UNZ. By this, the section UNZ
Rain falling on the upper surface 6a of the protection member 6 which is the bottom surface of the section UNZ, which is sloped so as to become lower toward the leachate drain groove 3 side, It can be guided to the surface and guided to the rainwater guide groove 4 for drainage.

In this case, since the rainwater outflow preventing flanges 8a are provided on both sides of the upper surface of the rainwater guide lid 8 in the width direction at substantially the same interval as the inner width of the section Z, the rainwater is discharged. Outflow to the groove 3 is prevented. A rubber plate 8b for sealing rainwater is attached to the back surface of the rainwater guide lid 8, and the rubber plate 8b and the side wall 3 of the leachate drainage groove 3 are attached.
a because it is in close contact with the top of
It is prevented from invading.

For the section UZ in the process of receiving the final waste for landfill or the bulk waste for temporary storage for intermediate treatment, the upper opening of the leachate drain 3 facing the section UZ is provided. On the other hand, the rainwater guide lid 8 is not attached or detached, and the rain falling on the waste is used as leachate, so that the upper end of the side wall 3a of the leachate drain groove 3 and a plurality of leachate discharge holes in the side wall 3a are formed. 7 to the leachate drain 3.

As shown in FIG. 8, for the section Z in which the landfill of the waste has been completed or the section ZR in which the reception of the temporary bulk waste for intermediate treatment has been completed, the rainwater guide By attaching the lid 8 to the upper opening of the leachate drain 3, rainwater falling on the deposited waste 20 can be covered by the rainwater guide lid 8.
In the rainwater drain 4.

That is, as shown in FIG.
Cover 21 is provided on the upper surface and the slope of the rainwater guide 0, and a waterproof sheet 22 is laid on the surface so that the lower end is located near the left end of the rainwater guide lid 8. To prevent rainwater from penetrating into the waste 20 and to guide it to the rainwater guide lid 8 so as to flow out into the rainwater drain 4
The amount of leachate discharged from the waste 20 can be minimized.

The water that has already penetrated into the waste 20,
Alternatively, when the waterproof sheet 22 is broken, the water that has permeated into the waste 20 is provided as a leachate by a plurality of leachate drain holes provided on the side wall 3 a of the leachate drain groove 3 via the protective layer 6. 7 to the leachate drain 3 to collect water. By doing as above, rainwater and leachate can be separated and collected, and the amount of leachate that requires drainage treatment can be minimized.

In the embodiment of the present invention, the crushed product of the vitrified material is used as a structural material of a waste disposal site, for example, as a material for constructing a dam such as a concrete aggregate of the dam 1a of the disposal site in FIG. As a concrete aggregate of the partition wall 2, as a construction aggregate of the drains 3 and 4, as a protective layer 6
In the upper half layer, as a constituent material of the protective layer 6 instead of the soil mixed with the sand, as a substitute for the cover soil 21 shown in FIG. 8, as an intermediate cover layer under the cover, or as a roadbed material, Used as a structural material for layers and gas release layers.

When the crushed vitrified product is used as a structural material for a waste disposal site as shown in FIG. 6, for example, as shown in FIG. It is used as a structural material for extension of itself, as a structural material of the original disposal site itself, or as a structural material of another newly established disposal site newly installed adjacent to the original disposal site 1 or the like. As a result, storage (landfill) at the original disposal site, and eventually at the additional disposal site or the new disposal site
The amount of waste to be made can be minimized.

In the above embodiment, the electric resistance heating equipment 40 having the furnace body 41 as the vitrification equipment of the intermediate treatment equipment 10 has been described, but the electric resistance heating equipment is not shown in the drawings. No special furnace body is constructed, and the waste to be treated (incinerated ash, waste pesticide, etc.) is buried in the soil in a batch system, and the soil is buried at both sides of the waste buried in the soil. The electrodes are inserted vertically into the electrodes, and the electrodes are energized to generate Joule heat in the soil containing the wastes between the electrodes and the wastes. Electric resistance heating equipment of a type for removing the solidified body may be used.

As the vitrification equipment, a gasification / melting furnace, an arc-type melting furnace, a plasma furnace, a surface melting furnace, a rotary melting furnace, a coke-bed-type furnace, etc. are used to obtain a vitrified body. Can also.

Here, waste is buried in the soil by the batch method as the vitrification facility of the present embodiment, and an electrode inserted vertically into the soil with the waste interposed is energized to melt and solidify the waste. Of waste as incineration ash, melting the incineration ash and crushing the obtained vitrified material with a crusher using concrete resistance and heating equipment of the type The results are shown in Tables 1 and 2, respectively.
As shown in Table 1 [Evaluation as a concrete aggregate (sample A)] and Table 2 [Evaluation as a roadbed material (sample B)], it can be effectively used as a concrete aggregate and a roadbed material.

[0073]

[Table 1]

[0074]

[Table 2]

In the managed waste final disposal site 1, which is the original disposal site of the above embodiment, the intermediate (U) of the waste carried into the disposal site does not require intermediate treatment, and the storage (landfill) section ZU of the disposal site is used as it is. It goes without saying that some waste is transported to and finally stored and disposed of.

In the above embodiment, a part of the incineration ash taken out from the combustion and incineration equipment 30 is sent to the storage (landfill) section ZU of the disposal site 1 for final storage, and is finally stored (landfill).
However, it is a matter of course that all of the incineration ash taken out from the combustion and incineration equipment 30 may be sent to the electric resistance heating equipment 40 of the vitrification equipment to obtain a vitrified body.

Further, a case where a part of the vitrified material taken out of the electric resistance heating equipment 40 of the vitrification facility is sent to the storage (landfill) section ZU of the disposal site 1 for final storage for final storage (landfill disposal) However, all of the vitrified matter taken out from the electric resistance heating equipment 40 is crushed by a crusher 5.
It goes without saying that the product may be crushed to zero and sent to the temporary storage section ZRP and temporarily stored as structural material of the disposal site.

In the above-described embodiment, the vitrified body is crushed by the crusher 50. However, the molten slag may be cooled and crushed by the water crushing method.

In the above embodiment, the case where the disposal site (former disposal site) provided with the intermediate treatment facility 10 adjacent thereto is the disposal site 1 in which a plurality of sections Z are formed by the partition walls 2 in the waste receiving section. Although shown, the present invention may be a disposal site that does not have a partition and does not form the compartment. Even in such a disposal site, temporary waste for intermediate treatment is temporarily placed in an appropriate place of the disposal site, or a crushed product of a vitrified body generated in the intermediate treatment facility 10 and used as a structural material is placed in the disposal site. Or a part of the ash or vitrified waste discharged from the intermediate treatment facility 10 for final storage and disposal can be landfilled in another area.

[0080]

As is clear from the above description, the following excellent effects can be obtained according to the method for effectively utilizing the vitrified product of the present invention.

In the structure of the first aspect, the vitrified material obtained by the vitrification facility of the intermediate treatment facility is used, for example, as a structural material of the original disposal site which is installed in the vicinity of the intermediate treatment facility, or By using it as a structural material for the extension of the original disposal site or as a structural material for another newly established disposal site that is newly installed adjacent to the original disposal site, the original disposal site and, consequently, the additional disposal site or The amount of waste to be stored (landfilled) in the new disposal site can be minimized.

Since the vitrification equipment is provided as the intermediate treatment equipment, the volume can be significantly reduced by melting and vitrifying the waste with the equipment, and the reduced vitrified material is used as the final waste. The final disposal (landfill) disposal at the disposal site can significantly extend the life of the disposal site. Therefore, in combination with using the obtained vitrified material as the structural material of the above-mentioned disposal site, the life of the disposal site can be significantly prolonged.

According to this method, the intermediate treatment facility is installed near the waste disposal site, and the waste to be intermediately treated by the intermediate treatment facility is temporarily stored in the disposal site. Waste can be collected and processed on the spot for intermediate treatment, eliminating the need for a conventional waste storage area for intermediate treatment, enabling efficient waste treatment and effective disposal sites. Can be used for Also, compared to the conventional case where the intermediate treatment facility and the disposal site are located far apart, the time and labor required to transport the waste after the intermediate treatment to the disposal site are not required, and the distribution cost can be reduced. .

According to the configuration of the second aspect, the following effect is further obtained in addition to the effect of the first aspect. Since the waste disposal site is divided into a plurality of sections, the intermediate waste is intermediaryly treated by an intermediate treatment facility installed in close proximity, and the waste is utilized by using any of the plurality of sections. Temporary storage can be performed, and the temporary storage section for the intermediate treatment waste and the section for landfilling final waste such as after intermediate treatment can be easily distinguished and managed. In addition, when temporarily placing intermediate treatment waste in the section and paying out from the section, receiving and paying equipment provided in each section can efficiently receive and pay out the section.

Since the disposal site is divided into sub-compartments, the temporary storage of the waste can be performed in the compartment or in a predetermined area (location) in the compartment according to the type and / or property of the waste. It can be placed separately for temporary storage. In order to temporarily place waste in the above-mentioned sections or at predetermined locations in the sections for a certain period or for a certain period of time, waste can be homogenized by means of storage, such as loading, etc. It can be mixed with the waste stored in the place and the components can be adjusted. Therefore, stable feed of the component waste can be performed to the intermediate treatment facility such as a combustion incineration facility or a vitrification facility without being affected by the component fluctuation for each receiving lot.

[0086] Since the disposal site is formed with a plurality of sections, the amount of leachate treatment required for draining into public waters can be greatly reduced. That is, in a conventional disposal site, it is common to perform a wastewater treatment in a state where leachate and rainwater are mixed without distinction, but in the present invention, a compartment in which waste is stored (landfilled), Since the other sections are clearly distinguished, a leachate drain and a rainwater drain are separately provided in a position close to the section, and for example, leachate discharged from the waste in the section where the waste is stored is the same. The storm water is drained through a leachate drain, and rainwater generated (falling) in a compartment that has not yet received waste is drained through the storm drain, for example. By allowing the leachate to be discharged from the repository without mixing, the leachate treatment load can be significantly reduced.

According to the configuration of the third aspect, the following effect is further obtained in addition to the effect of the second aspect. Since the receiving and dispensing facilities consisting of conveyors and traveling lifts are provided on the partition walls that define the sections, there is no need to provide long receiving and dispensing facilities such as belt conveyors inside the sections. In addition to being used for (landfill) and the like, the partition is provided with a receiving and dispensing facility, so that the partition is effectively used, and from this point, the disposal site can be effectively used.

Further, since a belt conveyor and a traveling lift are provided as waste receiving / discharging equipment, the waste for temporary storage is classified according to the form such as bulk, drums, etc., so that the receiving and discharging work at the disposal site can be performed. Efficiency can be improved. When the traveling lift is a lift in which a boom is rotatably provided in a horizontal plane, waste can be received and discharged in adjacent sections, and the receiving and discharging facility can be simplified.

In the structure of the fourth aspect, the following effect is further obtained in addition to the effect of the third aspect. Intermediate treatment equipment consists of combustion incineration equipment, electric resistance heating equipment as vitrification equipment, and crusher, so that combustion incineration and / or molten vitrification can be performed according to the type and properties of various wastes. It is possible to significantly reduce the amount of waste (ash or slag as vitrified material) stored in the disposal site by reducing the volume by burning and incineration of the waste and reducing the volume by melting and vitrifying, The ash after incineration is melted and vitrified by an electric resistance heating facility, so that the ash can be further reduced in volume and made harmless.

Then, the vitrified product is crushed to a predetermined particle size by a crusher and used as an aggregate as a structural material for a disposal site. In this use, the crushed product is temporarily stored in a separate section from the temporary storage section of the intermediate treatment waste in the disposal site. The temporary storage of the crushed products in the compartments can be clearly distinguished from the temporary storage compartments for intermediate treatment waste due to the formation of a plurality of compartments in the disposal site, and the waste is stored (landfilled). In addition, the temporary storage management can be easily performed, and the disposal site itself can be effectively used.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a managed waste final disposal site as a waste disposal site applied to the method of the present invention.

FIG. 2 is a sectional view of the disposal site of FIG. 1 taken along line A-A.

FIG. 3 is an enlarged plan view of a main part of the disposal site of FIG. 1;

FIG. 4 is a sectional view of the disposal site of FIG.

FIG. 5 is a partially enlarged perspective view of the disposal site of FIG. 1 cut along line CC and viewed obliquely from above.

FIG. 6: Waste is received at a final disposal site by a waste receiving facility and temporarily stored (temporarily stored), and the temporarily placed waste is sent to an intermediate processing facility by a payout facility for intermediate processing, and after the intermediate processing. Waste (final waste) is returned to the disposal site and stored (landfilled), and the waste or waste when the crushed vitrified product is returned to the disposal site and temporarily stored when used as a structural material It is a block diagram showing the flow of the structural material, and shows an example of the state of acceptance of various types of waste for intermediate treatment temporarily placed in a disposal site, the flow of intermediate treatment in intermediate treatment equipment, and glass It is explanatory drawing which forms a disposal site using a solidified body as a structural material.

FIG. 7 is a longitudinal sectional view showing a schematic configuration of an electric resistance heating furnace as a vitrification facility.

FIG. 8 is a sectional view corresponding to FIG. 4 showing a collection point of rainwater and leachate in a section where landfilling and temporary placing of waste have been completed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Waste disposal site (managed waste final disposal site) 2 Partition wall 3 Leachate drainage ditch 4 Rainwater drainage ditch 5 Waterproof material 6 Protective layer 7 Leachate drainage hole 8 Rainwater guide lid 10 Intermediate treatment equipment 30 Combustion incineration equipment (Intermediate treatment equipment) 40 Electric resistance heating equipment (vitrification equipment)
[Intermediate processing equipment] 41 Furnace body 42 Electrode MS molten slag 50 Crusher (Intermediate processing equipment) 11 Belt conveyor (Waste receiving and discharging equipment) 12 Traveling lift (Waste receiving and discharging equipment) 12a Lift body 12b Boom 12c Hook 12d Traveling Rail Z section (disposal site) ZR Temporary waste disposal section for intermediate treatment ZRP Structural material (vitrified waste) Temporary storage section ZU Waste storage (landfill) section UZ Waste receiving (in use) section UNZ Waste not received (unused) section BC1, BC2, BC3 Belt conveyor (waste receiving and dispensing equipment)

Claims (4)

[Claims] 1. A waste disposal site in which an intermediate treatment facility is installed in proximity to a waste disposal site, and a waste to be subjected to intermediate treatment by the intermediate treatment facility is temporarily placed in the waste disposal site. Is transferred to an intermediate treatment facility including a vitrification facility, the waste is melted and vitrified in the vitrification facility, and the obtained vitrified material is used as a structural material of a waste disposal site. How to use vitrified waste effectively. 2. A waste disposal site divided into a plurality of sections by a partition wall, each section having a waste receiving / discharging facility, and an intermediate treatment facility including a vitrification facility for the waste installed in close proximity. Using, temporarily place the waste to be intermediately treated in the section of the waste disposal site, transfer the temporarily placed waste to the intermediate treatment facility, melt it in the vitrification facility and vitrify it, A method for effectively utilizing a vitrified product, wherein the obtained vitrified product is used as a structural material of a waste disposal site. 3. A waste receiving and dispensing facility in each of the sections of the waste disposal site where the waste to be intermediately treated is temporarily stored, comprising: a conveyor provided at an upper portion of the partition wall defining the section; 3. The method according to claim 2, wherein the vitrified body is configured as a traveling lift. 4. The intermediate treatment equipment is a vitrification equipment comprising a combustion incineration equipment, an electric resistance heating equipment for melting and vitrifying ash generated in the combustion incineration equipment, and a vitrification obtained by the vitrification equipment. It is a crusher that crushes the body, and the crushed product of the vitrified body crushed by the crusher uses a different section from the temporary storage section of the waste disposal site where the intermediate waste is temporarily stored. 4. The temporarily placed crushed product is used as a structural material as a structural material for expanding the waste disposal site or as a structural material for another new disposal site. An effective use method of the vitrified body described in the above.