JP2004298730A - Waste material treatment facility and waste material treatment method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste material treatment facility and a waste material treatment method efficiently separating and enriching contaminants contained in waste materials and contaminated soil generated by dismantling a facility including a refuse incinerator or the like. <P>SOLUTION: This waste material treatment facility and waste material treatment method have a waste material charging port 1 and a rotary drum body 2 washing the contaminants of the waste material charged from the charging port 1 by water stream while rotating the contaminants. The rotating drum body 2 has multiple rotary washing brushes 9 disposed along the inner periphery thereof. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a waste material treatment facility and a waste material treatment method, and more particularly, to a waste material treatment facility and a waste material treatment method having a waste material inlet and a rotating drum main body for cleaning contaminants contained in the inputted waste material by a water flow while rotating. .
[0002]
[Prior art]
When dismantling facilities including refuse incinerators, a large amount of harmful contaminants such as dioxins and heavy metals (hereinafter simply referred to as "contaminants") are present on the surface of the structural steel material and the refractory bricks that make up the furnace walls. ) Adheres or penetrates, and if these remain, they may volatilize and adversely affect the surrounding environment when gas is cut during disassembly. After cleaning the surface, they are dismantled and removed.
[0003]
However, refractory bricks and irregular-shaped refractories cannot be sufficiently removed by washing with high-pressure water if they are left installed, and in particular, refractory materials in which contaminants have penetrated several mm into the interior from the surface layer. In such cases, contaminants remain without being discharged. Under these circumstances, these dismantled wastes are currently being landfilled at final disposal sites as specially managed waste.
[0004]
Furthermore, when treating soil contaminated with dioxins, heavy metals, and the like, a method of wet classification is generally used to separate and concentrate contaminants attached to rocks and the like. This method generally uses a trommel (rotating sieve) type classifier (Patent Document 1).
[0005]
[Patent Document 1]
[Patent Document 1] Japanese Patent Application Laid-Open No. 10-5538
However, landfill disposal of dismantled waste at a managed final disposal site not only requires expensive disposal costs (about 10 times that of general stable waste disposal), but also reduces the number of disposal sites. It is not desirable from the viewpoint of environmental protection and from the viewpoint of environmental protection, and it is necessary to detoxify and dispose of it even if it is disposed.
[0006]
In addition, the trommel type classifier cleans and classifies the object to be processed while rotating the rotary sieve by immersing it in a water tank, but the cleaning efficiency is high because of the friction between the rocks, sand, and gravel that are composed. There is a problem that it is not possible to efficiently and surely remove the infiltrated contaminants.
[0007]
Accordingly, the present invention has been made in view of the above-mentioned problems of the prior art, and a waste material treatment facility and a waste material capable of efficiently separating and concentrating waste materials and contaminants contained in contaminated soil and the like, which have been dismantled from facilities including refuse incinerators. It is to provide a processing method.
[0008]
[Means for Solving the Problems]
The above object is achieved by the invention described in each claim. That is, the characteristic structure of the waste material treatment equipment according to the present invention includes a waste material input port, and has a rotating drum main body that rotates and cleans the contaminants of the waste material input from the waste material input port with a water stream. In addition, a plurality of rotary cleaning means are provided inside the rotary drum body along its inner periphery.
[0009]
According to this configuration, the inputted waste material is rotated by the rotating drum and also by the rotary cleaning means, so that not only the waste material repeatedly collides with the waste material but also the waste material and the rotary cleaning means repeatedly collide with each other. Thus, not only the contaminants adhering to the surface of the waste material but also the contaminants that have permeated into the waste material can be effectively removed and removed while shaving off the contaminants together with the surface layer. Moreover, the removed contaminants are washed away by the water stream, and can be separated and removed from the waste material. In this case, since the waste material is washed by the brushing effect of the rotary washing means, the amount of washing water can be reduced as compared with the prior art.
[0010]
As a result, it was possible to provide a waste material treatment facility capable of efficiently separating and concentrating waste materials obtained by dismantling facilities including a refuse incinerator and contaminated soil and the like.
[0011]
A non-rotating cleaning means is interposed between the rotary cleaning means, and a predetermined gap is formed between the cleaning means, and the cleaned waste material is discharged to the rotary drum body. It is preferable to provide a discharge port for discharging the contaminated material that has been washed together with water.
[0012]
According to this configuration, the presence of the rotary cleaning means and the non-rotating cleaning means changes the collision mode of the input waste material, and removes and removes contaminants even with irregularly shaped waste material. Is effective, and contaminants and waste material pieces of a predetermined size can be removed through gaps formed between these cleaning means. Therefore, waste materials of a predetermined size or more can be separated, separated, and discharged.
[0013]
It is preferable that the rotating cleaning unit and the non-rotating cleaning unit are provided so as to extend between both ends in the longitudinal direction of the rotating drum main body, and include a plurality of blade members protruding radially from an axis. .
[0014]
According to this configuration, the contaminants contained in the large amount of waste material charged into the rotary drum main body can be scraped off by the plurality of blade members, and can be effectively separated and removed from the surface layer of the waste material.
[0015]
Further, the characteristic structure of the waste material treatment method according to the present invention is such that in the method of throwing waste material through a waste material inlet of a rotary drum body and washing the thrown waste material by a water flow while rotating the thrown waste material, The cleaning is performed while colliding with a rotary cleaning means provided in the drum main body.
[0016]
According to this configuration, it is possible to provide a waste material treatment method capable of efficiently separating and concentrating waste materials obtained by dismantling a facility including a refuse incinerator and the like and contaminants contained in contaminated soil and the like.
[0017]
It is preferable that a non-rotating cleaning means is interposed between the rotary cleaning means, and a gap is provided at a predetermined interval between the cleaning means so that classification can be performed.
[0018]
According to this configuration, classification can be performed, and contaminants can be efficiently separated and concentrated.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a partial cross-sectional front structure of the waste material treatment equipment according to the present embodiment, and FIG. 2 shows an AA cross-sectional structure. The waste material processing equipment includes a waste material input port 1, a rotary drum main body 2 for removing contaminants attached to a surface layer from the waste material a input from the waste material input port 1 and cleaning the waste material a, and a rotary drum main body 2. A waste material discharge port 3 for taking out the waste material a washed by the above, a cleaning water introduction pipe 4 injected into the rotary drum main body 2, and a cleaning drain discharge port 5 for discharging the cleaning waste water introduced from the cleaning water introduction pipe 4. And a base 7 for supporting and placing them. In this case, the waste material inlet 1 may be provided integrally with the rotary drum body 2 or may be separate.
[0020]
As shown in FIGS. 1 and 2, the rotary drum main body 2 has guide rings 2 a externally fitted at two longitudinally front and rear portions, and the left and right guide rings 2 a are disposed at the front and rear on the base 7. It is mounted on the roller 6 and supported. The rotating drum main body 2 is rotated by a motor (with a speed reducer) 11 via a chain 10 wound around a gear 2b formed substantially at the center in the longitudinal direction. The number of rotations of the rotary drum main body 2 can be appropriately changed according to the size and specifications of the rotary drum main body, or the characteristics, shape, amount, and the like of the waste material.
[0021]
It is preferable that the base 7 be placed on a trolley and the waste material processing equipment is configured to be movable. Therefore, it is preferable that the rotating drum main body 2 has an inner diameter of about 1000 mm and a length of about 2000 to 3000 mm. If the waste material processing equipment is made movable by a trolley, the waste material processing equipment can be moved to the dismantling site for work, which is convenient. Note that FIG. 2A shows a cross-sectional structure of the rotary drum body 2 taken along the line AA, and the rollers 6 and the like are omitted for convenience.
[0022]
Inside the rotating drum main body 2, a cylindrical frame 8 having a large number of through holes of a predetermined size is arranged in a circumferential direction along the inner peripheral surface thereof, and furthermore, an inner side is provided on the inner peripheral side thereof. A large number of small-diameter steel cleaning brushes 9 are arranged and mounted along the circumference. The cleaning brush 9 has a shape shown in FIG. 3 and constitutes a cleaning unit.
[0023]
As shown in FIG. 3, the cleaning brush 9 is provided with a plurality of steel blade members 9b having a plurality of projections radiating from the outer peripheral surface of the shaft core 9a. The contaminants attached to the waste material a are separated and removed together with the surface layer of the waste material a while colliding with the waste material a. The number, shape, material, and the like of the blade members 9b can be appropriately selected according to the processing capacity of the waste material processing facility, the characteristics of the material to be processed, and the like. The rotary drum main body 2 is gently inclined toward the rear end, and contaminants removed from the waste material a accumulate at the bottom of the rotary drum main body 2 through the cylindrical frame 8, and the cleaning drainage formed on the rear end side It is discharged from the discharge port 5 to the outside. The inclination of the rotating drum main body 2 may be such that the gently washed waste material is conveyed to the rear end side, and is usually preferably about 3/100, but can be appropriately changed depending on the characteristics, amount, shape, etc. of the waste material. The washed waste material a is discharged from a waste material discharge port 3 also formed on the rear end side.
[0024]
Numerous cleaning brushes 9 arranged along the inner peripheral surface of the rotary drum main body 2 have a small gap therebetween, and contaminants removed from the washed waste material fall through the gap to the bottom. . Therefore, by selecting the gap between the cleaning brushes 9 and selecting the size of the hole of the cylindrical frame 8, the sieve can be simultaneously performed with the cleaning.
[0025]
A large number of cleaning brushes 9 mounted in the rotary drum main body 2 are provided with spur gears 9c at their ends every other along the circumferential direction, and rotate with the rotation of the rotary drum main body 2. It has become. That is, an inner gear 2c that meshes with the spur gear 9c of the cleaning brush 9 is formed on the end side of the rotary drum main body 2 to which the spur gear 9c of the cleaning brush 9 is attached. The cleaning brush 9 to which the gear 9c is attached is configured to rotate. As a result, the surface layer of the input waste material is effectively scraped off, and the contaminated layer in which the contaminated material has penetrated is surely separated and removed. The rotatable cleaning brush 9 constitutes a rotary cleaning means, and a cleaning brush 19 as a non-rotating cleaning means is interposed between the rotary cleaning brushes 9.
[0026]
FIG. 2 shows an example in which the non-rotating cleaning brushes 19 are disposed alternately between the rotary cleaning brushes 9, but the present invention is not limited to this, and two non-rotating cleaning brushes 9 are disposed between the rotary cleaning brushes 9. The number of non-rotating cleaning brushes 19 may be arranged, or a larger number of non-rotating cleaning brushes 19 may be arranged. Combinations are conceivable, and may be composed of only the rotary cleaning brush 9.
[0027]
Further, the washing water introduction pipe 4 is inserted in the longitudinal direction at substantially the center position of the cylindrical section of the rotary drum, so that the washing water can be injected from the washing water introduction pipe 4 into the rotary drum main body. Inside the rotary drum main body 2, a plurality of nozzles 4a are formed at intervals in the longitudinal direction of the washing water introduction pipe 4 to form injection ports. The number, shape, amount of water, and the like of the nozzles can be appropriately selected according to the specifications of the rotary drum main body 2.
[0028]
According to the waste material treatment equipment according to the present embodiment, waste materials obtained by dismantling facilities including a refuse incinerator and contaminants contained in contaminated soil can be efficiently separated and concentrated. The washed waste material is one from which contaminants have been removed, and no post-process is required. In addition, the concentrated contaminants have a fine particle size, and the number of processing steps in the post-process can be effectively reduced.
[0029]
[Another embodiment]
(1) As shown in FIG. 4, the first half in the longitudinal direction of the rotary drum shown in the above embodiment may be a trommel type classification structure 2d, and the latter half may be the cleaning configuration of the above embodiment. That is, among the waste materials input from the waste material input port 1, sand and gravel are first classified and removed, and waste materials having a predetermined size or more are sent backward to be washed. With this configuration, the cleaning process can be performed according to the size of the waste material, and the cleaning efficiency can be increased. The waste material sieved by the trommel type classification structure 2 is carried out to the outside by the screw conveyor 12 arranged at the lower part. M is a motor that drives the screw conveyor 12.
[0030]
(2) In the above-described embodiment, the example in which the inner gear is formed on the front end side of the rotary drum main body 2 has been described. However, the inner gear may be formed on the rear end side. A rotating body having an outer gear may be attached to the end side of the rotating drum main body 2 so as to mesh with the spur gear 9c of the cleaning brush 9.
[0031]
(3) In the above embodiment, the shape of the blade member 9b is made of steel having a projecting shape. However, the shape, material, and the like are not limited to these, and the blade member 9b can withstand a waste material to be input to some extent. Any shape and material having strength may be used. Therefore, the blade member may be shaped like a plate, a block, a saw-tooth projection, or another shape.
[0032]
(4) The rotation of the rotary drum 2 is not limited to the chain, and may be performed by a belt drive system, a gear rotation, or another system.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of a waste material treatment facility showing one embodiment of a waste material treatment facility according to the present invention. FIG. 2A is a cross-sectional view of a rotary drum AA of the waste material treatment facility, and FIG. FIG. 3 is a perspective view of a cleaning brush as an example of a cleaning unit. FIG. 4 is a partial cutaway view of a waste material processing facility showing another embodiment of the waste material processing facility according to the present invention. Front view [Explanation of reference numerals]
DESCRIPTION OF SYMBOLS 1 Waste material input port 2 Rotary drum main body 3 Waste material discharge port 5 Cleaning drainage outlet 9 Rotary cleaning means 9a Shaft core 9b Blade member 19 Non-rotating cleaning means a Waste material

Claims (5)

It has a waste material inlet, and has a rotating drum body that cleans with a water stream while rotating contaminants of the waste material introduced from the waste material inlet. Waste treatment equipment provided with a rotary cleaning means. A non-rotating cleaning means is interposed between the rotary cleaning means, and a predetermined gap is formed between the cleaning means, and the cleaned waste material is discharged to the rotary drum body. The waste material treatment equipment according to claim 1, further comprising a discharge port for discharging the washed contaminants together with water. 2. The rotating washing means and the non-rotating washing means are provided so as to extend between both ends in the longitudinal direction of the rotary drum main body, and include a plurality of blade members projecting radially from a shaft center. Or 2 waste material treatment equipment. In a waste material treatment method of throwing waste material through a waste material inlet of a rotating drum body and washing the thrown waste material by a water flow while rotating the thrown waste material, the thrown waste material collides with a rotary cleaning means provided in the rotating drum body. A waste material treatment method characterized by washing while performing. 5. The waste material processing method according to claim 4, wherein a non-rotating cleaning means is interposed between said rotary cleaning means, and a predetermined gap is formed between each of said cleaning means to enable classification.

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