JPH11165141A - Method for landfill disposal treatment of industrial waste and wrapping structural body used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently prevent environmental pollution due to leakage and elution of harmful waster-liquor and malodor out of industrial wastes for landfill disposal during the landfill in the present time and also after closing the site for wastes at the time of completion of landfill in further. SOLUTION: Industrial wastes D are disposed for landfill in a wrapping structural body 100 comprising a waterproof layer 10 formed on the surface of the site F3 for disposal, a circumferential wall 20 formed in the surrounding of the layer 10, and a tent 30 stretched above the circumferential wall 20 in a downward movable manner. On completion of landifilling, the tent 30 is lowered to wrap the industrial wastes D with the waterproof layer 10, the circumferential wall 20, and the tent 30, and the wastes are isolated from the peripheral environments.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for landfilling industrial waste which can prevent leaching and diffusion of harmful substances and odors from the landfilled industrial waste in the future, and to a method for this method. In order to implement, when burying industrial waste, landfilling of the industrial waste with a water-tight structure and landfilling will result in the leaching of harmful substances from the landfilled waste over time and in the future. More particularly, the present invention relates to a packaging structure that can achieve these objects even during a landfill operation.

[0002]

2. Description of the Related Art For industrial waste, chemical treatment and incineration treatment are performed according to the type of waste, and landfill treatment is selected for those that cannot be performed. Landfills require vast disposal sites due to their nature. Landfill sites are usually located in mountain valleys where a fixed distance from the city is maintained, and land prices are low and land can be acquired. Is selected. This is compared to dumping waste from a low position to a high position,
This is because discarding from a high position to a low position requires much lower cost.

[0003] In consideration of workability, the selected sloping land is leveled in a stepped manner with dog running at several intermediate points, and harmful substances are leached into the ground and mixed into tributaries of rivers. In order to prevent the environment from being polluted by dispersing through groundwater flowing underneath, a waterproof sheet is used over the entire land for disposal. In addition, a sewage treatment facility is provided at the bottom of the slope where rainwater is concentrated,
Sewage flowing out of industrial waste during and after rainfall is subjected to a predetermined detoxification treatment such as filtration, chemical treatment, pH adjustment, etc., and then released into the surrounding environment.

[0004] Naturally, such waste land has a limit in the capacity of industrial waste according to the size of the land.
It is closed when the industrial waste reaches a predetermined capacity. At this time, the sewage treatment facility may be closed at the same time as the closing of the land for disposal, or may continue to operate for a while after the closure, and may be closed when the harmful substances fall below a predetermined reference value. In addition, after closure, embankment may be formed on dumped waste to form artificial topsoil.
Expect natural purification power and leave as it is. Which of these is different depending on the type and amount of the main waste in the waste, and is ultimately left to the judgment of the local government or the like who is in charge of the management of the land for disposal.

[0005]

In the conventional landfill treatment of industrial waste, it is necessary to operate a wastewater treatment facility during use of the land for disposal and after the land is closed. , The running cost of the sewage treatment plant is not negligible, and the off-flavor and harmful substances from the waste dumped after the closure of the land for disposal are still present, There is no methodological or practical assurance that no spills or leaching will occur in the future, and the problem is that local residents must continue to be threatened by the uncertain dangers of environmental pollution for many months. there were. This is evidenced by the fact that there is strong opposition from local residents to the construction of landfills.

According to the present invention, it is possible to isolate the industrial waste to be landfilled from the surrounding environment in view of the tendency of industrial waste requiring landfilling to increase year by year and the current state of landfilling as described above. It is an object of the present invention to provide a simple methodology and an industrial waste packaging structure as an entity for implementing the methodology most easily.

[0007]

The present invention employs the following method and structure to achieve the above object. That is, as a method, a peripheral wall for preventing infiltration of rainwater or the like is formed around land in a range selected as a place where industrial waste should be dumped, and a waterproof layer is formed on the surface of the land surrounded by the peripheral wall. At the same time, the space above the peripheral wall is shielded with a waterproof roof member so as to form a space for storing a predetermined amount of industrial waste between the waterproof layer and the space after storing the industrial waste in the space. The gist of the present invention is to seal and then bury air by evacuating the air in the gap and bringing the roof member into close contact with the industrial waste, thereby packing the industrial waste with the waterproof layer, the peripheral wall, and the roof member.

According to such a configuration, the waterproof layer and the peripheral wall on the ground surface, and the roof member above it are all watertight, and being watertight means that they are airtight. . Therefore, the voids formed by surrounding them are in a state of being isolated from the surrounding environment as long as sewage and odor are a problem.By dumping industrial waste in the voids, sewage during the dumping process, Odor leakage can be prevented. In addition, since the inside of the gap is not exposed to wind and rain, the reclamation work can proceed steadily without being affected by the weather. Furthermore, after the industrial waste reaches a predetermined capacity, the roof member is brought into close contact with the industrial waste, and the dumped industrial waste is wrapped with the waterproof layer on the ground surface, the peripheral wall, and the roof member. Therefore, even after the disposal site is closed, leaching of sewage and odor and leakage are prevented in the future.

On the other hand, a packaging structure for carrying out such a method has a shieldable entrance at least in one place,
A peripheral wall of a waterproof structure formed around a certain range of land, a waterproof layer formed on the surface of the land in this peripheral wall, and a peripheral portion connected to the peripheral wall so as to form a gap between the waterproof layer and the waterproof layer. The gist of the present invention is to provide an awning made of a waterproof sheet material stretched over the peripheral wall and a removable support for supporting an intermediate portion of the awning.

[0010] According to such a configuration, the waterproof layer, the peripheral wall, and the awning can form a water-tight and air-tight void for accommodating industrial waste, and after accommodating the industrial waste. Finally, the industrial waste was wrapped by the waterproof layer, the surrounding wall and the awning, because by removing the pillars and lowering the awning, the dumped industrial waste can be covered with a waterproof sheet material. In this state, the industrial waste treatment method described above can be easily implemented.

[0011] The industrial waste packaging structure according to the above configuration may have a pressurizing means for keeping the internal pressure higher than the external pressure. By keeping the internal pressure higher than the external pressure by the pressurizing means, the weight of the awning can be supported by air pressure together with the struts, so that the struts need to be simpler and easier to remove, and the awnings will not loosen. This can be effectively prevented, and rain and snow can slide down.

[0012] The pressurizing means can be composed of an air passage formed between the awning and the peripheral wall, and a flexible valve curtain hanging down from the awning to the inside of the peripheral wall. In this configuration, the valve curtain hanging from the awning is flexible,
The valve curtain can swing away from the inside of the peripheral wall or in close contact with the inside of the peripheral wall according to the flow of the surrounding air around the connection point with the awning. Therefore,
The air outside the gap formed by the waterproof layer, the surrounding wall, and the awning can push the valve curtain through the ventilation path and enter the gap, while the air in the gap is attached to the valve curtain that adheres to the surrounding wall. Because it is blocked and can not leak out of the gap,
The indoor air pressure can be kept higher than the external air pressure throughout the four seasons without imposing a burden on the surrounding environment or by using natural wind based on the surrounding terrain.

[0013] In addition, for those having the above-mentioned pressurizing means, a blower device for blowing air into the gap may be additionally provided with the above-mentioned pressurizing means. it can. When the blower device is used alone, it is possible to omit the ventilation passage and the valve curtain to keep the internal air pressure high, so that the structure of the rim of the awning and the connection structure between the awning and the surrounding wall should be simplified. Can be. Further, when the blower device is used in combination with a valve curtain or the like, the blower device can keep the internal air pressure high as a backup for the valve curtain or the like even under a slight wind where natural wind is not available or under no wind.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The method for landfilling industrial waste is carried out using a packaging structure 100 constructed on land secured as a disposal site F3 (FIG. 1). Here, an outline of the disposal site F3 selected as a suitable place will be described. The east side of the city area HP is a mountain range connecting the low-elevation mountains M1 to M4, and the west side has an ocean. Between the city area HP and the mountain area, a small hill F1,
F2 exists, and a plurality of routes R1... R6 from the city area HP to the mountain area via the hills F1 and F2 are provided. The river flowing out of the mountain area (indicated by a dotted line in the figure) substantially runs toward the ocean along roads R1 to R6. In such terrain, land for disposal F
The road R2, which is a branch road of the road R1 from the city area HP to the mountain M3 through the southern side of the hill F2,
A gentle slope beside is selected. This waste land F3 is
It is located on the northwest slope of the mountain M3, which is in front of the valley line VR running in the direction connecting the ocean and the mountain M3, and is separated from the city area HP by about 9 km.

The packaging structure 100 for industrial waste has a peripheral wall 20 formed so as to surround a predetermined area of the disposal site F3.
And a waterproof layer 10 formed on the surface of the surrounding land, an awning 30 extending over the peripheral wall 20, a support 40 for supporting the awning 30, a pressing means 50A, and the like (FIGS. 2 and 3). .

The packaging structure 100 is installed so as to hang down from the road R2 along the slope of the land for disposal F3. The planar shape of the peripheral wall 20 is a rectangular shape with a large corner cut, and the side surface shape is such that the height gradually increases toward the valley side. Road R2 on the surrounding wall 20
On the side, a carry-in entrance 20A provided with a shielding door 20B is formed, a turning site F4 of the transport vehicle TR is secured, and the packaging structure 100 is connected to the road R2 via the turning site F4. The tent 30 is provided over the entire sky above the peripheral wall 20.
0, 40... Each support 40 is accompanied by a plurality of wire ropes 47, 47. The wire ropes 47, 47 are stretched between the support 40 and the peripheral wall 20 and between the support 40 and the support 40.

The pressurizing means 50A is substantially a turbine type large blower device, and two pressurizing means are provided beside the turning site F4. Each of the pressurizing means 50A communicates with the internal space separated from the surrounding environment by the waterproof layer 10, the peripheral wall 20, and the awning 30 through the duct 52, respectively. In such a state, the peak M3 is located in front of the packaging structure 100, and the valley line VR is located almost behind. Further, heavy machines T, T for pressing and leveling the carried waste are arranged inside the packaging structure 100.

The waterproof layer 10 is formed after the disposal land F3 is leveled in steps (FIG. 4). This is to form a stable slope that is hard to collapse due to civil engineering, increase the internal volume of the packaging structure 100, and prevent massive heavy waste from falling along the slope. . However,
The equivalent width along the inside of the peripheral wall 20 is the hoistway 10 of the heavy equipment T.
The slope is left as A. The waterproof layer 10 is composed of two layers: a mortar layer 12 containing a desiccant sprayed onto the surface of the land F3 after the leveling, and a rubber-based waterproof mat layer 11 laid on the mortar layer 12. , Mortar layer 1
Reference numeral 2 also functions as a slope retaining member. In addition, each pillar 4
No. 0 has an independent foundation 41 in the horizontal portion of the land for disposal F3, and its tip has a double pipe structure with a cap pipe 44. Wire rope 47, 47 ...
Is attached to the column 40 via the cap pipe 44.

Each of the columns 40 comprises an independent concrete foundation 41 formed by molding, a pole 43 and a cap pipe 44 (FIG. 5). An anchor boss 42 is embedded in the independent foundation 41, and the anchor boss 42 projects upward from the center of the independent foundation 41. The pole 43 is made of a single high-strength steel pipe having a small diameter and sufficient strength, and is positioned by being fitted into the anchor boss 42 of the independent foundation 41 buried underground. Therefore, a through hole H2 for inserting the anchor boss 42 is provided at a predetermined position of the waterproof mat layer 11. The cap pipe 44 is formed of a metal pipe having a diameter slightly larger than that of the pole 43, and a flange 45 having screw holes H1, H1,. A plurality of metal rings 44b are welded to the outer periphery of the cap pipe 44 in different directions. The cap pipe 44 is fitted to the outside of the distal end of the pole 43 in a loosely fitted state, so that the entire support column 40 can extend and extend to the length of the cap pipe 44. Each of the wire ropes 47 has one end thereof passed through a metal ring 44b, and is tightened by a clamp fitting 47a.
It is connected to.

The tent 30 is made of a waterproof sheet material 31, 3
Are three-dimensionally sewn (FIGS. 6 and 7). Sheet material 3
Preferred as 1 is a material having water repellency in addition to waterproofness. Here, a translucent vinyl sheet that includes a tough net wire 31S as a reinforcing material and is lightly colored is used. The light transmittance of the sheet material 31 is about 70%.
In the daytime, workability in the packaging structure 100 is ensured without requiring special lighting equipment, and consideration is given to preventing the indoor temperature from excessively rising.

Sheet material 31 constituting each part of awning 30
Are sewn on top of each other and sandwiched between the reinforcing sheets 32, 32 made of tent fabric from the front and back (FIG. 6). In addition, the periphery of the awning 30 is
Are rolled up to prevent cracks from the periphery and are given a certain weight. On the back side of the awning 30, a large number of locking pieces 35, 35, which are fixed to the tent cloth with eyelet fittings and are kept at a fixed distance from the periphery, are arranged in line. Further, a plurality of valve curtains 34, 34,... Made of a flexible sheet material are similarly arranged on the inner side so as to keep a constant distance from the peripheral edge. Only the upper edge of the valve curtain 34 is sewn to the awning 30, and the lower edge of the valve curtain 34 assumes a hanging posture regardless of the posture of the awning 30. The valve curtains 34, 34 have a margin in the horizontal direction. The sheet material of the valve curtain 34 uses the edge cut of the awning 30.

Reinforcing sheets 32 are further applied to the corners of the awning 30 where a large number of sheet materials 31 are gathered by three-dimensional sewing, from the front and back.
(FIG. 7). In this portion, a through hole H3 corresponding to the screw hole H1 of the bracket 45 at the top of the column 40 is provided, and the awning 30 includes bolts B1, B1,.
Further, it is fixed to the top of the column 40 by the cover 48 having the through hole H4 corresponding to the through hole H3.

On the other hand, the peripheral edge of the awning 30 and the other end of the wire rope 47 are connected to the upper end of the peripheral wall 20 (FIG. 8). In addition, the surrounding wall 20 has the same structure as the cloth foundation of the wooden building, that is, the excavation site F3 is excavated in a belt shape, and the rubble stone is laid there, then the stone is slabbed, and the concrete is thrown away. Is the base 21. Further, a reinforcing bar is provided on the base portion 21, a formwork is assembled at a predetermined height, and concrete is cast on the formwork to form a wall portion 22. However, on the inner side of the upper end room of the wall portion 22, a projection 23 as a valve seat of a valve curtain 34 is formed continuously over the entire peripheral wall 20, and an eyebolt 26 and a stay 25 are attached. The eyebolt 26 is embedded in the upper end surface of the wall 22, and the other end of the wire rope 47 from the column 40 is passed through the eyebolt 26 and fixed using a clamp 47 a.

The stay 25 is made of a metal round bar, and is welded so as to mutually connect the tips of a large number of stud arms 24 provided at regular intervals on the upper end surface of the wall 22. Each stud arm 24 is bent obliquely upward to the outside of the wall portion 22. As a result, the stay 25 is positioned along the peripheral wall 20 so as to surround the upper end portion of the wall portion 22 obliquely outward from above. Then, the awning 30 is connected to the peripheral wall 20 via the stay 25 so that a part of the peripheral edge portion thereof hangs down from the stay 25. At this time, the valve curtain 34 hangs at a position inside the ridge 23 of the wall 22 (FIGS. 8 and 9).

The tent 30 and the stay 25 are connected to the tent 3
The wire 35 is attached to the locking pieces 35, 35,.
a is inserted and wound around the stay 25 and connected. Further, the ventilation passage W formed between the awning 30 and the upper end of the wall 22 and the valve curtains 34, 34.
Is composed. The pressurizing means 50B is a kind of one-way valve mechanism that allows only the flow of air in a direction to introduce outdoor air into the inside (FIG. 9B). That is, the outside air that has passed through the ventilation path W can enter the inside by pushing the valve curtain 34 away from the ridge 23 (indicated by a two-dot chain line in the figure). On the other hand, the flow of air from the inside to the outside causes the valve curtain 34 to come into close contact with the ridge 23. As a result, air that has once entered the interior cannot flow back to the outside. Such pressurizing means 50B extends over the entire circumference of the peripheral wall 20, and therefore can take in wind from any direction. Note that the valve curtain 34 can be artificially pushed out of the ridge 23 (shown by a dotted line in the figure), and thereby, the blowing of outside air can be shut off.

The packaging structure 100 has a structure in which the roof member is a sheet-like awning 30 and the pressing means 50
By adjusting the internal pressure via A, 50B,
Can well withstand the wind and snow. In addition, the packaging structure 10
The location condition of 0 is taken into consideration so that the pressurizing means 50B using natural wind which requires no running cost can be utilized as much as possible. That is, the packaging structure 10
The mountain M3 rises behind 0, and the valley line VR runs in the ocean direction across the packaging structure 100 on the northwest side of the mountain M3. Therefore, the land wind and the sea wind based on the temperature change characteristics of the land and the ocean, and the mountain wind and the valley wind based on the temperature change characteristics of the mountain and the flat land both blow along the valley line VR, and the vicinity of the packaging structure 100 So, always,
A rich air volume can be obtained.

Specifically, rainwater throughout the four seasons
Since 0 is water-repellent, it flows down quickly from the awning 30. In this case, the periphery of the tent 30 is
4, the rainwater can be guided to the outside of the peripheral wall 20 without fail, and even if it is raining sideways, it is prevented by the peripheral edge of the hanging awning 30, No entry into the packaging structure 100 is possible.

Against the snowfall in winter, the pressurizing means 50B raises the internal pressure by using the pressurizing means 50A when there is a slight wind or no wind, and increases the tension of the awning 30 to counter the weight. can do. Further, since the awning 30 itself is a material containing the mesh wire 31S as a reinforcing material, it can exhibit sufficient breaking strength and has excellent surface smoothness, so that the internal pressure is intentionally changed. Then, by stretching or loosening the awning 30, it is possible to perform an operation of causing a crack in the snow layer to slide down.

Further, in the case of strong wind, the valve curtains 34, 34
.. Can be dealt with by extruding a certain amount to the outside of the ridge 23 and adjusting the blowing amount of the wind, and also in the event of an unexpected gust or the like, each of the columns 40 expands and contracts to a certain extent and joins the tent 30. Since shocking stress can be eliminated, the awning 30 can be prevented from breaking. In the event of a storm such as a typhoon, the valve curtains 34, 34 ...
It is preferable to completely close the awning 30 and completely shut off the blowing of the wind in order to prevent the awning 30 from being damaged in advance.

The packaging structure 100 has a loading port 20A.
The industrial waste D which is continuously carried in through the wastewater is used in such a manner as to be leveled to a lower portion of the disposal site F3 by using heavy machines T, T disposed therein. At this time, the stored industrial waste D includes a waterproof layer 10 formed on the surface of the disposal site F3,
The surrounding wall 20 and the awning 30 are separated from the surrounding environment (FIG. 10). In addition, it is preferable that the shielding door 20B be opened and closed each time the carrying-in work is performed, in order to prevent the odor from being diffused, except during a time when the carrying-in work is particularly frequent.

The packaging structure 100 is closed when the stored industrial waste D reaches a predetermined amount and it becomes difficult to secure a sufficient working space inside. The industrial waste D uses the packaging structure 100. And packaged. First, the packaging work
After extruding all the valve curtains 34 to the outside of the protruding shape 23, cut them in order from the poles 43 of the columns 40 distant from the carry-in entrance 20 </ b> A, and pull out the cap pipes 44.
The worker moves to the column 40 located closer to the entrance 20A. The worker also cuts the pole 43,
Pull out from the cap pipe 44. Here, tent 30
Gradually descends with the weight of the cap pipe 44, but due to the viscous resistance of the air that pushes the valve curtain 34 and flows out to the outside,
The tent 30 does not fall instantly. Finally, the worker processes the column 40 closest to the carry-in entrance 20A, retreats from the carry-in entrance 20A to the outside, and closes the shielding door 20B. In this situation, the valve curtain 34 allows only the movement of air flowing from the inside to the outside.
The industrial waste D comes into close contact with the stored industrial waste D, and as a result, the industrial waste D is air-tightly and water-tightly wrapped by the packaging structure 100, and the industrial waste D is wrapped in a landfill. A method of landfilling the article D is realized.

In the above description, the term industrial waste is used as a representative noun, and is not intended to exclude general waste. Further, the above-mentioned packaging structure 100 relates to one having two types of pressurizing means 50A, 50B. However, any one of the pressurizing means 50A, 50B may be provided, and the pressurizing means 50A, 50B is not necessarily provided. It doesn't need anything. This is because the function of supporting the awning 30 can be dealt with by increasing the number of the supports 40. The constituent materials of the waterproof layer 10 and the awning 30 are examples of suitable materials.

[0033]

As described above, according to the method for landfilling industrial waste according to the present invention, the waterproof layer on the ground surface, the peripheral wall, and the roof member are all water-tight and air-tight.
By dumping the industrial waste into the voids formed by the surroundings, it is possible to prevent the leakage of sewage and odor during the dumping process, and after the industrial waste reaches a predetermined capacity, the roof member Is brought into close contact with the industrial waste, and the industrial waste is wrapped by the waterproof layer on the ground surface, the surrounding wall, and the roof member. There is an excellent effect that environmental pollution caused by leaching and leakage of harmful substances, sewage, and odors from objects can be effectively prevented. Further, according to the industrial waste packaging structure according to the present invention, a void is formed by the waterproof layer on the ground surface, the peripheral wall, and the awning supported by the removable support,
After storing the industrial waste in this space, by removing the pillars, a state in which the industrial waste is packaged by the waterproof layer, the surrounding wall and the awning is realized, so that the above-mentioned treatment method is rational and extremely simple. The effect is excellent.

[0034]

[Brief description of the drawings]

FIG. 1 is a topographical map for explaining a location condition of a packaging structure.

FIG. 2 is a plan view showing an embodiment of a packaging structure.

FIG. 3 is a side view of the embodiment.

FIG. 4 is a side sectional view of the embodiment.

FIG. 5 is a perspective view of a column in the embodiment.

FIG. 6 is an explanatory diagram of a tent in the embodiment.

FIG. 7 is a perspective view showing how to attach the awning in the embodiment.

FIG. 8 is a perspective view of a peripheral wall portion in the embodiment.

FIG. 9 is an explanatory diagram of a pressing unit in the embodiment.

FIG. 10 is a front sectional view of the embodiment.

[0035]

[Explanation of symbols]

D: Industrial waste W: Ventilation path 100: Packaging structure 50A, 50B: Pressurizing means 10: Waterproof layer 20: Peripheral wall 20A: Carry-in entrance 30: Tent 34: Valve curtain 40: Support

Claims (5)

[Claims] 1. A peripheral wall for preventing infiltration of rainwater or the like is formed around land in a range selected as a place where industrial waste is to be dumped, and a waterproof layer is formed on the surface of the land surrounded by the peripheral wall. The space above the peripheral wall is shielded by a waterproof roof member so as to form a gap for storing a predetermined amount of industrial waste between the waterproof layer and the gap, after storing the industrial waste in the gap. Sealing, then, the air in the gap is evacuated and the roof member is brought into close contact with the industrial waste, whereby the industrial waste is packed and landfilled with the waterproof layer, the peripheral wall, and the roof member. Landfill method for industrial waste. 2. A peripheral wall of a waterproof structure having a shieldable entrance at least in one place and formed around a certain area of land, a waterproof layer formed on the surface of the land in the peripheral wall, and An awning made of a waterproof sheet material stretched over the peripheral wall so as to form a gap between the rim and the waterproof layer, and a removable support supporting an intermediate portion of the awning; An industrial waste packaging structure consisting of: 3. The packaging structure for industrial waste according to claim 2, further comprising pressurizing means for maintaining the internal pressure of a gap formed by the waterproof layer, the peripheral wall, and the awning higher than the external pressure. 4. The pressure means comprises an air passage formed between the awning and the peripheral wall, and a flexible valve curtain hanging down from the awning to the inside of the peripheral wall. Item 4. An industrial waste packaging structure according to Item 3. 5. The packaging structure for industrial waste according to claim 3, wherein said pressurizing means is a blower device for blowing air into said gap.