JPH08173945A - Device for decomposition and digestion of organic substance - Google Patents

Abstract

PURPOSE: To provide a device for decomposition and digestion of organic substances wherein its stirring means for stirring a large amount of the organic substances to be treated can be driven by a small driving force. CONSTITUTION: The structure of a decomposing and digesting tank 2 comprises the cascade plates 4 arranged in three tiers, upper, intermediate and lower, on the inner peripheral wall thereof, a horizontal transfer part 20 for horizontally transferring the organic substances which are loaded for treatment in the tank from a supply and discharge opening 21 and fall from above and a vertical transfer part 8 for receiving the organic substances from the horizontal transfer part and vertically transferring the same to the uppermost cascade plate 4. A cascade plate 4 in each tier is provided thereon with a plurality of stirring rods 9a connected to a cylindrical transfer part 8a of the vertical transfer part 8 and a chain is engaged with the motor-driven chain wheel and driven chain wheel provided outside the decomposing and digesting tank 2 and is passed around a chain engaging tooth 11 at the outer end of the stirring rod 9a in the lowermost tier.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for decomposing and digesting organic matter, in which waste solid organic matter such as dehydrated cake of excess sludge generated from raw waste and wastewater treatment facilities is decomposed into water and carbon dioxide to obtain solid components. The present invention relates to an apparatus for decomposing and digesting organic substances for digestion and volume reduction.

[0002]

2. Description of the Related Art As a device for decomposing and digesting organic matter such as debris discharged from kitchens or food factories such as restaurants or cafeterias and dehydrated cake of excess sludge generated from wastewater treatment facilities into water and carbon dioxide Conventionally, there is, for example, a garbage disposal that uses a cylindrical closed processing container.

In this food waste disposer, a cylindrical processing container whose both ends are closed is hermetically disposed on a support sideways and
The handle is rotatably supported about its axis, and a handle for rotating it by the user is fixed to the end of the processing container. It has a free garbage input port.

[0004] This conventional food waste disposer is a fungus that is a fungus that is a fungus in which raw garbage is thrown in by opening an input port and natural bacteria are concentrated before and after it, and which is harmless to humans, pets and plants, and a moisture control material. It is said that the raw garbage can be digested and reduced in volume by adding, and manually turning the treatment container once or twice using the handle and then leaving it to stand. More specifically, it is said that vegetables, fish, and meat lose their original shape in 5 to 10 days, and the bad odor is hardly noticeable.

However, when the inventors of the present invention actually tested it, it is recognized that the processing container is hermetically sealed, so that almost no malodor leaks to the outside, but the inside thereof removes excess water and introduces air. Maintenance of aerobic bacteria
It has the inconvenient result that it becomes difficult to grow and the decay progresses.

As another conventional apparatus of this type, an octagonal tubular processing container is laterally arranged on a support and rotatably around the axis thereof, and the processing container is provided on one side of the peripheral side of the processing container. There is a kitchen waste extinguishing machine in which a raw garbage input port is configured to be openable and closable in its part, and a large number of small holes are formed in a lid of the input port.

[0007] In this conventional apparatus, wood chips that have been specially treated in advance are made to exist in a processing container as a filler, and the lid of the charging port is opened in the processing container to throw in the garbage,
After turning the processing container by hand once or twice as needed, if left standing, the input garbage can be digested and extinguished,
It is said that the bad odor is hardly noticeable. Further, it is explained that the filling agent needs to be replenished because it decreases by about 10% in one year.

However, according to actual tests conducted by the inventors of the present invention also with respect to this conventional apparatus, as in the case of the conventional example described above, the aerobic bacteria are not sufficiently maintained and proliferated, and decay proceeds. It has the inconvenient result that it does.

That is, the principle of waste treatment is to promote volume reduction, stabilization, and detoxification, but the above-mentioned two conventional devices cannot adjust the conditions for the activity of aerobic bacteria. It is difficult to maintain and multiply, and the organic matter such as the input garbage is spoiled, resulting in inconvenient results.

Therefore, the applicant of the present invention has solved the above problems of the prior art, adjusted the conditions for the growth of aerobic bacteria with a minimum of energy, and converted various waste organic substances into almost water and carbon dioxide. As a simple device capable of decomposing and reducing the volume of solids to a minimum, an organic substance decomposing / digesting device was previously proposed (JP-A-6-246252).

This organic matter decomposing / digesting apparatus is a decomposing / digesting tank rotatably arranged around an axis, and the decomposing / digesting tank having a plurality of small holes passing through the inside and outside, and the aforesaid decomposing / digesting tank have their axial centers. Is a rotation driving means for rotating around the center, and an organic matter crushing stirring means arranged inside the decomposition and digestion tank, the organic matter that can be crushed and stirred with the rotation of the decomposition and digestion tank An apparatus for decomposing and digesting organic matter, which comprises crushing and stirring means.

[0012] This technique is excellent for achieving the above object, but the organic matter to be treated put into the inside is crushed and stirred by the organic matter crushing and stirring means as the decomposition and digestion tank is rotated. Therefore, it is necessary to rotate the decomposition digestion tank, in that respect, it is not suitable for increasing the size of the decomposition treatment tank, and it was assumed that the decomposition treatment tank is mainly oriented horizontally or diagonally. There is also a problem that the installation area becomes large, and there is a limit to increasing the size of the device. As a result, the increasing amount of organic waste cannot be treated in a large amount, and it is suitable for decomposing and digesting organic matter mainly discarded from small-scale facilities such as restaurants and cafeterias.

Therefore, the inventor of the present invention has advanced the technology capable of constructing a large-scale decomposing / digesting tank suitable for treating an increasing amount of organic waste, and decomposes and digests a large amount of organic waste in a short period of time. , Developed and proposed an organic matter decomposing / digesting device that can secure a speedy decomposing / digesting treatment of surplus sludge such as increasing waste and sewage treatment plants, and can be installed in a narrow space (Japanese Patent Application No. 6-218011). issue). It should be noted that this technique is not yet publicly known at this point.

This apparatus for decomposing and digesting organic matter comprises a vertical decomposing and digesting tank having a heat insulating material on the peripheral wall and a bottom portion made of a moisture permeable member, and stirring means arranged in the decomposing and digesting tank. A stirring means for stirring the organic matter to be introduced into the decomposition and digestion tank by its own operation, and a horizontal transfer which is located at the lower part of the decomposition and digestion tank and selectively transfers the organic material to a supply / discharge port or a vertical transfer means described later. A horizontal transfer means having an opening at the top for receiving an organic substance coming down the decomposition and digestion tank, and an organic matter transferred by the horizontal transfer means is pulled up, and the inside of the decomposition and digestion tank is supplied from above. It is a device for decomposing and digesting organic matter, which is composed of a vertical transfer means to be charged into.

According to this technique, many of the above-mentioned objects can be achieved, such as the installation of a device equipped with a large digestive digestion tank in a narrow space, and it is extremely effective.

[0016]

However, the above-mentioned unknown decomposition and digestion apparatus for organic substances, which the applicant of the present invention has previously filed, is an excellent one capable of solving the problems of the above-mentioned known examples. It still had issues that needed to be resolved.

That is, in the above-described apparatus for decomposing / digesting organic matter, the decomposing / digesting tank is lengthened in the longitudinal direction. The amount of organic matter to be processed in the stack increases, and the load applied to the lower organic matter to be processed increases according to the stacking depth of the organic matter to be processed.
The load on the stirring means for stirring the organic substance to be treated also becomes very large. As a result, there is a new problem that it is necessary to increase the strength of the stirring means and the power of the driving means for driving the stirring means is also large.

Therefore, the present invention solves the problems of the above-mentioned known examples, and further, by constructing a vertically long digestive digestion tank as long as necessary and adding as much organic substance as possible to this, It is an object of the present invention to provide an apparatus for decomposing and digesting organic matter having a stirring means capable of stirring a large amount of organic matter to be treated with a small driving force.

[0019]

The apparatus for decomposing and digesting organic matter according to the present invention is a decomposing and digesting tank in which a heat insulating material is arranged on the peripheral wall and a moisture permeable member is arranged on the bottom, and the organic matter to be treated is introduced. A vertical type digestive and digestive tank, and a stirring means for stirring the organic substance to be treated, which is arranged from the vertical axis standing in the center of the digestive and digestive tank toward the inner peripheral wall of the digestive and digestive tank. An agitating means composed of a plurality of rod-shaped members rotatably around the vertical axis and arranged at constant angular intervals to each other, and engaging the outer end of each rod-shaped member of the agitating means with the agitating means. Driving means for rotationally driving about the vertical axis, and lateral transfer means located at the lower part of the decomposition and digestion tank for transferring the received organic substance to be processed in the lateral direction of the decomposition and digestion tank, and at the upper part thereof. An opening to receive the organic matter to be processed falling from the bottom of the digestion tank The lateral transfer means having a feed and discharge port for receiving or discharging the to-be-processed organic matter input from the outside of the decomposition and digestion tank, and the to-be-processed organic matter transferred by the lateral transfer means to the decomposition and digestion tank. The above object can be achieved by adopting a configuration in which the vertical transfer means is provided for transporting it to the upper part of the digestive digestion tank and introducing it into the digestive digestion tank from the upper part of the digestive digestion tank.

In this case, for example, as described in claim 2, the drive means is a chain wheel mechanism including a drive chain wheel and a tension adjusting chain wheel provided outside the peripheral wall of the decomposition and digestion tank, and A rotary driving body for driving the drive chain wheel of the chain wheel mechanism, the drive chain wheel of the chain wheel mechanism, the tension adjusting chain wheel, and the chain engaging teeth formed on the outer ends of the rod members of the stirring means. An annular chain member that engages with each other and circumscribes each of the partially arcuate chain guide members that are arranged between the adjacent rod-shaped members so that the vicinity of the outer ends thereof are connected to each other. Of course, the invention is not limited to this as long as it engages with the outer end of each rod-shaped member of the stirring means to rotate the stirring means about the vertical axis.

Further, for example, as described in claim 3, the vertical axis is constituted by a pipe body, and the vertical transfer means is
It may be arranged in the vertical axis. It goes without saying that the vertical transfer means may have a configuration other than this, for example, a configuration in which it is erected on the outer side of the digestion and digestion tank.

Further, for example, as described in claim 4, in the decomposition and digestion tank, a cascade plate having a dropping port for dropping the organic matter to be treated is provided in the upper and lower parts of the inner peripheral wall thereof in a horizontal direction. A cascade plate of one or more stages extending in a state is provided, and the stirring means is positioned at least above each cascade plate in order to transfer the organic matter to be treated to the drop port while stirring the organic substance to be processed on the cascade plate. Can be configured as.

Further, for example, when the cascade plate is provided on the inner peripheral wall of the digestive digestion tank as described above, the cascade plate is provided above and below the inner peripheral wall of the digestive digestion tank as described in claim 5. It is suitable to dispose two or more stages in the middle of the direction, and to dispose the positions of the drop openings of the cascade plates that are adjacent to each other in the up-down direction by shifting the upper and lower cascade plates.

Further, for example, when a plurality of stages of stirring means are provided on the vertical axis as described in claim 6, the driving means is arranged to drive the stirring means of any stage among them. , The outer end of each rod-shaped member of the stirring means of the stage can be engaged. Usually, it is convenient in terms of configuration to provide the stirring means at the lowest stage.

The decomposition and digestion tank is of a vertical type so as not to expand the installation space, and has a structure in which the stirring means is rotated around a vertically standing vertical axis. Is appropriate.

Further, the stirring means rotates the organic substance to be treated, such as raw garbage, which has been put into the decomposition and digestion tank, on each cascade plate and / or by the rotating operation of the rod-shaped member constituting the stirring means about the vertical axis. As long as it can be crushed on the bottom of the digestive digestion tank, stirred, mixed, and transferred to the drop port formed in the cascade plate, its configuration is free within the range of the above configuration. .

It is preferable that the cascade plate has a gap between the inner end thereof and the peripheral side of the vertical axis to leave a gap through which air can be circulated in the vertical direction.

Since the organic substance to be treated, which is put into the decomposition and digestion tank, is an organic substance, most of it is decomposed into water and carbon dioxide by facultative anaerobic bacteria, aerobic bacteria and the like. Water sometimes becomes steam. Further, some odorous gas may be generated during the above decomposition process. Therefore, it is preferable to discharge the gases generated in the above decomposition process through the deodorizing means.

For example, it is preferable that a deodorizing means is connected to the decomposition and digestion tank through a gas discharge pipe, and gas is discharged through the deodorizing means. Needless to say, the existing means can be freely adopted as the step odor means.

However, according to the decomposition and digestion apparatus of the present invention, the decomposition and digestion of the organic matter to be treated progresses well and is decomposed into water and carbon dioxide, so that the generation of odorous gases is relatively small. However, there is little problem even if exhausted without deodorizing means.

By the way, the supply / discharge port of the lateral transfer means is
Literally, it is a doorway for inputting the organic matter to be treated from here, and taking out the residues of decomposition and digestion from here, but especially when introducing the organic matter to be treated, make it as fine as possible for later decomposition and digestion. It would be better if it had been crushed. Therefore, it is preferable that a crushing means for crushing the to-be-treated organic substance to be input is attached to the supply / discharge port of the lateral transfer means.

Further, since the moisture permeable member forming the bottom of the digestive digestion tank is intended to discharge excess moisture added together with raw garbage and water generated inside, it is introduced into the digestive digestion tank. The solid content of the organic material to be processed, which has been fragmented into pieces, can be composed of a punching plate material having a large number of small holes having a diameter that cannot easily pass to the outside, a net material, or the like. . The diameter of the small holes or the size of the mesh is suitably about 0.5 to 10 mm.

Below the bottom, there is provided a tray or tank for receiving and temporarily holding the falling water. Since the organic substance to be treated may be dissolved in this water, it is suitable to further decompose and digest it for drainage.

According to the operator's selection, the lateral transfer means
The organic matter to be processed is transferred to the vertical transfer means side, or the decomposition residue or the like of the organic matter to be processed can be transferred back to the supply / discharge port, and has an opening at the upper portion as described above, As long as the organic substance to be treated that descends from the digestion and digestion tank can easily enter it, the specific configuration is free. For example, it is possible to use a screw conveyor or the like in which the upper portion on the peripheral side of the transport cylinder is open. It may be configured such that it can be rotated in the forward and reverse directions.

Further, the vertical transfer means may have any specific constitution as long as it can vertically transfer the organic substance to be treated carried in by the horizontal transfer means to above the decomposition and digestion tank. . As described above, the vertical transfer means can be installed inside or outside the digestive digestion tank, and, of course, the transfer destination of the horizontal transfer means should be determined corresponding to the installation position. Needless to say.

The vertical transfer means, the horizontal transfer means, and the stirring means are basically operated in conjunction with each other, and for that reason, they are operated at an appropriate time, regularly or irregularly. It is appropriate to provide control means for this. As a mode of this operation, for example, it is set to repeat a cycle of operating for 1 hour and stopping for 8 hours, or set to operate for a fixed time each time an organic substance to be treated is introduced.

However, the horizontal transfer means, if necessary, does not interlock with the other two, that is, the vertical transfer means and the stirring means, and sends back the decomposition residue of the organic matter to be treated to the supply / discharge port. It must be configured so that it can perform the operation.

[0038]

The organic substance decomposing / digesting apparatus of the present invention, which is constructed as described above, can be used as follows. First, the organic substance to be treated is put into the decomposing / digesting tank, and as a premise, a predetermined amount, for example, a filling rate of about 60% of sawdust, dead leaves or the like is previously set in the decomposing / digesting tank. Then, a photosynthetic bacterium, a mutant bacterium, an enzyme agent or the like is added as necessary.

After such preparation, the organic substance to be treated is fed from the feed / discharge port. At this time, when the feed / discharge port is provided with a crushing means, the fed organic substance is crushed by this crushing means. To be done.

The organic substance to be treated is transferred by the horizontal transfer means to the lowermost receiving port of the vertical transfer means, vertically transferred by the vertical transfer means, and then introduced into the decomposition digestion tank from the upper part of the decomposition digestion tank. It

The organic substance to be treated put into the digestive digestion tank is rotatively agitated by an agitating means composed of a plurality of rod-shaped members extending in the circumferential wall direction from the vertical axis at the center of the digestive digestion tank,
Then, it is crushed into small pieces, and is transferred to the opening of the lateral transfer means while being stirred, crushed and mixed. When the cascade plate is provided, it is transferred to the drop port,
After being sequentially dropped, they are further transferred to the opening of the lateral transfer means.

That is, the stirring means is driven to rotate about the vertical axis by the driving means which engages with the outer end of the rod-shaped member which constitutes the stirring means, thereby mixing various organic substances to be treated and bringing them into close contact. A space is provided between the adjacent organic substance pieces to be treated, and air is introduced between them, and then the organic substance is transferred, and finally, the lateral transfer means is caused to drop from the opening.

Further, in this stirring process, excess water contained in the organic substance to be treated and water generated in the process of decomposing and digesting the organic substance permeate through the moisture permeable member from the bottom of the digestive digestion tank, The water content of the organic substance to be treated in the digestion and digestion tank is appropriately adjusted.

Then, the organic matter to be treated which has fallen from the opening to the horizontal transfer means is transferred to the upper part of the digestive digestion tank again by the horizontal transfer means and the vertical transfer means, and is dropped therein. To be done.

Therefore, while the horizontal transfer means, the vertical transfer means and the stirring means are in operation, the organic substance to be treated, which has been put into the decomposition and digestion tank, descends while being stirred by the stirring means, and is horizontally transferred from the opening. The cycle of dropping to the means, being carried to the upper part of the digestive digestion tank by the horizontal transfer means and the vertical transfer means, and returning to the upper part of the digestive digestion tank is repeated.

In the stationary process of the stirring means and the like, the organic substance to be treated, which has been put into the decomposition and digestion tank through the process of the above operation, is crushed, stirred and mixed, and excess water is also removed. Then, it is aggregated together with a filler such as dead leaves that are pre-filled, and it becomes a condition suitable for the growth of aerobic microorganisms, and the crushed organic fine particles are gradually decomposed into carbon dioxide and water. Will be discharged. Water passes through the processes of natural flow and forced flow, and finally is discharged from the bottom of the decomposition digestion tank at the bottom, carbon dioxide, steam,
Other gases are deodorized through the deodorizing means if they are provided as described above, and then released to the atmosphere. Otherwise, they are released from the upper part of the digestive digestion tank to the atmosphere as they are. To be done.

Thus, depending on the type and nature of the organic matter to be treated, when the temperature rises due to the activity of the microorganisms and the conditions are further improved, the activity of the microorganisms becomes more active and the decomposition and digestion action proceeds. This means that the solid component will gradually decrease.

Since the organic substance to be treated is decomposed and digested with high efficiency, it goes without saying that, when the organic substance to be treated is charged every day within the capacity, the above-mentioned points are repeated, As long as it is an organic substance, it is discharged as carbon dioxide and water, so that the solid component will hardly remain in the end.

Even when the conditions of microbial activity are bad, such as in winter, the organic substance decomposing / digesting apparatus of the present invention is thermally insulated from the inside by the heat insulating material, so that it can be produced in the decomposing / digesting tank well. Good environmental conditions are maintained well, and highly efficient decomposition and digestion action is continued.

As described above, in the above operation process, the drive means engages with the outer end of each rod-shaped member constituting the stirring means to apply the rotational drive force, and hence the rotation center portion. The stirring means can be driven to rotate with a smaller driving force as compared with the case where a driving force is applied to the digestive digestion tank, and even if the digestive digestion tank is increased in size, the digestive digestion tank can be fully processed. Even if an organic substance is added, the stirring means can be rotationally driven with a smaller driving force.

As a result, a large amount of organic substances to be digested can be treated at one time, and it can be sufficiently applied to a large-scale facility.

In the above case, for example, as described in claim 2, the drive means is a chain wheel mechanism including a drive chain wheel and a tension adjusting chain wheel provided outside the peripheral wall of the decomposition and digestion tank. A rotary drive for driving a drive sheave of the sheave mechanism, a drive sheave of the sheave mechanism, a tension adjusting sheave, and a chain engaging member formed at an outer end of each rod-shaped member of each stirring means. And a ring-shaped chain member that engages the artificial teeth and circumscribes each of the partially arcuate chain guide members arranged between the adjacent rod-shaped members in a state of connecting the outer ends of the adjacent rod-shaped members to each other. In addition, the driving means can be formed with a simple structure, and the decomposition and digestion apparatus can be further downsized.

Further, for example, as described in claim 3, the vertical axis is formed of a pipe body, and the vertical transfer means is
When arranged in the vertical axis, the digestion and digestion tank can be further downsized.

Further, for example, as described in claim 4, the decomposition and digestion tank is a cascade plate having a drop opening for dropping the organic matter to be treated in the vertical direction midway of the inner peripheral wall thereof, which is horizontal. A cascade plate of one or more stages extending in a state is provided, and the stirring means is positioned at least above each cascade plate in order to transfer the organic matter to be treated to the drop port while stirring the organic substance to be processed on the cascade plate. In such a case, the organic matter to be treated in the digestion / digestion tank can be divided by a cascade plate, and the organic matter to be treated can be crushed into pieces and stirred and mixed to decompose and digest. It is possible to prevent the weight of all the organic substances to be treated in the tank from being applied to the stirring means on the bottom.

As a result, the decomposition and digestion treatment of the organic substance to be treated can be performed more appropriately, and the stirring means can be driven with a smaller driving force.

Further, for example, as described in claim 5, the cascade plates are arranged in two or more stages in the middle of the inner peripheral wall of the decomposition and digestion tank in the vertical direction, and the cascade plates are adjacent to each other in the vertical direction. When the positions of the drop ports of the plates are shifted from each other in the upper and lower cascade plates, the treated organic matter pieces and water dropped from the upper cascade plate are the drop ports formed in the immediately upper and lower cascade plates. Since they do not exist at the vertically aligned position, they do not fall straight down to the bottom of the bottom, but fall on the cascade plate directly below, and through the same process, the cascade plate below it or It will fall to the bottom of the digestion and digestion tank.

Therefore, the stacking of the organic substances to be treated in the digestion / digestion tank is made possible by the above-mentioned two or more cascade plates.
It can be further divided into smaller pieces, and the organic matter to be processed can be crushed into pieces on each cascade plate, and can be stirred and mixed, and the organic matter to be processed in the digestion digestion tank is a bottom stirring means and each cascade plate. The weight of the stirring means arranged above can be reduced. As a result, the decomposition and digestion treatment of the organic substance to be treated can be more appropriately performed, and the stirring means can be driven with a smaller driving force.

Further, for example, as described in claim 6, a plurality of stages of stirring means are provided on the vertical axis, and the driving means is arranged to rotate the stirring means of any one of the stages. When the outer end of each rod-shaped member of the stirring means is engaged, the driving means need only be engaged with any one of the stirring means, so that the digestion and digestion apparatus can be further downsized. It is possible to drive a plurality of stirring means with a small driving force.

[0059]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The examples described below are
Since it is a preferred specific example of the present invention, various technically preferable limitations are attached, but the scope of the present invention is, unless otherwise stated in the following description, a limitation to the present invention.
It is not limited to these modes.

1 to 5 are views showing an embodiment of the apparatus for decomposing and digesting organic substances according to the present invention. In FIG. 1, a decomposition and digestion apparatus 1 for an organic substance has a cylindrical decomposition and digestion tank 2 arranged upright, that is, arranged vertically. This decomposition digestion tank 2
Is made of a corrosion-resistant metal in this embodiment and has a capacity of 8.8 cubic meters. Also, this decomposition digestion tank 2
Has a double-walled peripheral wall between which the heat insulating material 3
Is filled.

The decomposition and digestion tank 2 has the inner wall shown in FIG.
As shown in FIG. 3, three stages of cascade plates 4 projecting toward the center side are fixedly provided at predetermined intervals in the vertical direction, and each of the cascade plates 4 has a donut shape as shown in FIG. The plate material is cut out at three places to form three sector-shaped drop openings 4a, 4a, 4a. Each of the drop openings 4a formed in the cascade plate 4 is formed in a sector shape having an angular width of about 30 degrees from the center of the donut shape, and the three drop openings 4a, 4a, 4a are each of a donut shape. It is formed at an angular interval of 120 degrees from the center.

In the vertical direction, the three cascade plates 4, 4 and 4 are arranged such that, with respect to the adjacent cascade plates 4 and 4, their mutual drop openings 4a and 4a are 60 degrees as shown in FIG. It is fixed to the inner peripheral wall of the digestive digestion tank 2 so as to be located at a shifted position. That is, the drop openings 4a, 4a, 4a of the uppermost cascade plate 4 and the drop openings 4 of the second cascade plate 4
a, 4a, and 4a are located at positions shifted from each other by 60 degrees, and the drop openings 4a, 4a, and 4a of the uppermost cascade plate 4 are located.
And the bottom, that is, the drop port 4 of the third cascade plate 4
a, 4a, and 4a are arranged so as to be located at the same position in the vertical relationship with each other.

Since the cascade plate 4 has a donut shape as its basic shape, the vertical transfer section 8 which functions also as a vertical axis which is a rotation axis of a stirring mechanism 9 which will be described later is conveyed to the center side. A gap 4 between the outer periphery of the tubular portion 8a and the upper and lower cascade plates 4, 4 is sufficient to ensure air flow.
b.

Again, in FIG. 1, a bottom plate 6 having a large number of small holes 5, 5, ... Is fixedly provided in the middle of the lower part of the digestion and digestion tank 2, and below the bottom plate 6. A tank portion 7 for temporarily storing the water flowing down through the small holes 5, 5, ... Is formed.

At the center of the digestion / digestion tank 2, a transfer cylinder 8a of a vertical transfer unit 8 is rotatably arranged in an upright state, and a screw conveyor is applied to the vertical transfer unit 8. That is, the vertical transfer section 8 is rotatably erected on the axis of the digestion and digestion tank 2 by means of upper and lower bearings 8d, 8d and the like, and a conveying cylinder 8a. The screw cylinder 8b includes a screw member 8b and a motor 8c that rotationally drives the screw member 8b.
Has a lower end penetrating the bottom plate 6 and extending to a lower part thereof, and is rotatably connected to an end of a lateral transfer unit 20 described later. The transfer cylinder portion 8a of the vertical transfer portion 8 is
The cascade plates 4 are penetrated through the gaps 4b in the central part of the cascade plates 4, 4, and the upper end thereof is located above the uppermost cascade plate 4 and below the lid 2a of the digestive digestion tank 2. And the upper end is open.

In the vertical transfer section 8, however, the motor 8c rotationally drives the screw member 8b so that the horizontal transfer section 2 is moved.
The organic substance to be treated, which has been transported by 0, is transported (transported) upward, and from the upper end opening, as shown by the arrow in FIG.
It is discharged onto the uppermost cascade plate 4 in the digestive digestion tank 2.

Agitating rods 9a, 9a, ... Of an agitating mechanism 9 are provided at positions directly above the respective cascade plates 4 in the transfer cylinder 8a of the vertical transfer unit 8 as shown in FIGS. Each of the four is fixed at a constant angle interval and extends in parallel to each cascade plate 4 up to the vicinity of the inner peripheral wall of the digestive digestion tank 2 except for the stirring rods 9a, 9a at the bottom.

That is, as shown in FIG. 1, each stirring rod 9a of the uppermost stirring mechanism 9 is located above the uppermost cascade plate 4, and each stirring rod 9a of the second stirring mechanism 9 is 2 Above the cascade plate 4 of the third stage, each stirring rod 9a of the stirring mechanism 9 of the third stage is above the cascade plate 4 of the third stage, and each stirring rod 9a of the stirring mechanism 9 of the lowermost stage is The transfer cylinder portion 8a of the vertical transfer portion 8 is located above the bottom plate 6 so as to be positioned respectively.
It is connected and fixed to.

As shown in FIG. 4, the stirring rod 9a of each stirring mechanism 9 at the lowermost stage is provided with an annular metal fitting 10 having an L-shaped cross section in a plan view at the outer end thereof. Are connected to each other, and the chain engaging teeth 11 are fixed to the outer ends of the stirring rods 9a via the annular metal fittings 10. The annular metal fittings 10 include the stirring rods 9a adjacent to each other,
It is not divided into the lengths between 9a, but is connected to form a ring, but if each part is viewed individually, it plays the role of each chain guide member of the partial arc shape. is there.

The annular metal fitting 10 has an upper cover 12 extending from the peripheral wall of the digestive digestion tank 2 as shown in FIG.
Covers the upper part and the center part of the upper part, and the bottom plate 6 and the lower cover 13 raised from the bottom plate 6 cover the lower part and the center part of the annular metal fitting 10. The upper cover 12 and the lower cover 13 are formed in a ring shape along the lower inner peripheral surface of the digestive digestion tank 2 in a state where each chain engaging tooth 11 is isolated from the inside of the digestive digestion tank 2. .

Further, in this embodiment, the ring-shaped space is formed by projecting and mounting the upper cover 12 and the lower cover 13 on the inner peripheral side of the digestion / digestion tank 2. However, the lower part of the digestion / digestion tank 2 may be projected outward and the inside of the projection may be a ring-shaped space.

As shown in FIG. 4, each chain engaging tooth 11 is engaged with a chain (annular chain member) 14 wound around the annular metal fitting 10 in an circumscribed state.
Reference numeral 4 is engaged with a tension adjusting chain wheel 15 and a drive chain wheel 16 arranged outside the peripheral wall of the digestive digestion tank 2.

As shown in FIG. 5, the tension adjusting chain wheel 15 and the drive chain wheel 16 are rotatably installed on a support plate 17 formed outside the peripheral wall of the digestive digestion tank 2.
The drive chain wheel 16 is rotationally driven by an electric motor (drive mechanism) 19 attached to a support plate 18. Further, the chain wheel 15 for adjusting the tension is attached to the support plate 17 so as to be slightly movable, and the chain 14 can be adjusted by moving the chain wheel 15 as necessary.

Therefore, when the drive chain wheel 16 is rotationally driven by the electric motor 19, the chain 14 engaged with this and the chain wheel 15 is orbitally driven along the inner peripheral surface of the digestion and digestion tank 2. The stirring rods 9a, 9a, ... Of the stirring mechanism 9 at the lowermost stage are driven to rotate about the transport tube portion 8a via the chain engaging teeth 11, 11 ... Become.

The stirring rods 9a, 9a of the stirring mechanism 9 in all stages
.. are connected and fixed to the transport cylinder portion 8a as described above, so that when the stirring rods 9a, 9a of the lowermost stirring mechanism 9 are rotationally driven, the transport cylinder portion 8a is rotated, When the transport tube portion 8a is rotationally driven, the stirring rods 9a, 9a ... Of the stirring mechanism 9 in the other stage are rotationally driven. Therefore, the stirring rods 9a of the stirring mechanism 9 at the bottom are connected to the drive chain 1
6, when the electric motor 19 is rotationally driven through the tension adjusting chain wheel 15 and the chain 14, the stirring rods 9a of the other stages are also rotationally driven through the transport cylinder portion 8a.

A cover 27 covers the tension adjusting sheave 15, the driving sheave 16, and the portion of the chain 14 extending outside the peripheral wall of the digestive digestion tank 2, which is installed outside the peripheral wall of the digestive digestion tank 2. There is.

Incidentally, in FIG. 1, just below the bottom plate 6, a lateral transfer section 20 is formed toward the axial center of the digestive digestion tank 2. A screw conveyor is used for the lateral transfer unit 20, and the screw member 20a is externally covered by the transfer cylinder unit 20b. Transport cylinder 20
An opening (not shown) is formed on the upper side of the peripheral side of b, and a notch opening (not shown) is also formed at a portion of the bottom plate 6 along the lateral transfer portion 20.

Therefore, the organic substance to be processed which is transferred while being crushed and stirred by the stirring rods 9a, 9a of the lowermost stirring mechanism 9 on the bottom plate 6 is provided with the cutout opening and the transfer tube portion 2.
Through the opening 0b, it falls into the transport cylinder 20b.

A feed / discharge port 21 of the organic substance to be treated is connected to one end (the left end in FIG. 1) of the horizontal transfer unit 20, and the feed / discharge port 21 rotates around the axis of the horizontal transfer unit 20. It is movably arranged. Therefore, the supply / discharge port 21 is used as an upward direction when used as a supply port of the organic substance to be treated, and as a downward direction when used as a discharge port. In addition, the electric motor 20 is provided at the same end of the lateral transfer unit 20.
c is connected, and the electric motor 20c is configured to rotate the screw member 20a of the screw conveyor in the forward and reverse directions.

The other end of the lateral transfer section 20 (the other end in FIG. 1)
Is connected to the receiving end at the lower end of the vertical transfer unit 8, and the horizontal transfer unit 20 vertically transfers the organic substance to be treated introduced from the supply / discharge port 21 and the organic substance to be treated dropped from the bottom portion 6. Transport to 8. The vertical transfer unit 8 is configured to transfer the organic substance to be processed, which has been transferred by the horizontal transfer unit 20, upward and drop it onto the uppermost cascade plate 4.

On the outside of the peripheral wall of the digestive digestion tank 2,
A deodorization tower 22 is erected along this, and the deodorization tower 2
2 has a contact material filling portion 22b in which a contact material is filled in an intermediate portion of a cylindrical tower body 22a. The contact material filling section 2
A gas exhaust pipe 22d that rises from the liquid spray nozzle portion 22c and the contact material filling portion 22b is disposed above the 2b, and the water that drips in a drop shape from the portion below the contact material filling portion 22b. Is formed to hold the tank 22e. The tank portion 22e is provided with a discharge port 22f for discharging the water accumulated therein.

A gas introducing pipe 23 for introducing the gas from the decomposing / digesting tank 2 is further connected to the contact material filling section 22b of the deodorizing tower 22. A suction fan 24 is inserted to suck the gas in the tank 2 and send the gas to the contact material filling section 22b of the deodorization tower 22. Further, the water flowing down to the lowermost tank portion 7 of the decomposition and digestion tank 2 is pumped up by the pump device 25 and fed to the liquid spray nozzle portion 22c.

The operation of the horizontal transfer section 20, the vertical transfer section 8, the stirring mechanism 9 and the pump device 25 of this embodiment is controlled by a control section (not shown) so that they operate in conjunction with each other. To be done. For example, the control unit may set the above units to operate each unit for a desired time, regularly or irregularly, and set to repeat a cycle of operating for 1 hour and stopping for 8 hours, for example. You can

As a matter of course, the horizontal transfer section 20 supplies and discharges the decomposition residue of organic matter and the like, if necessary, without interlocking with the other two, that is, the vertical transfer section 8 and the stirring mechanism 9. 21 is configured to be capable of performing the operation of sending the data back to the device 21.

Next, the operation of this embodiment will be described. To use the apparatus 1 for decomposing and digesting organic matter of this embodiment, first, the operating conditions are set by the controller. The operating conditions are
The optimum setting is made according to the properties of the organic matter to be treated, the source and the amount thereof. For example, the lateral transfer unit 20,
The vertical transfer unit 8 and the stirring mechanism 9 are operated in a cycle of stopping for 6 hours after the operation for 2 hours, and the stirring mechanism 9 is configured so that the transport cylinder portion 8a serving as the rotation axis thereof rotates at a rotation speed of 6 rpm. Set.

Further, the deodorization tower 22 is pumped with a pump device 25 for feeding the water flowing down to the lowermost tank portion 7 of the decomposition digestion tank 2 and the gas in the decomposition digestion tank 2 is sucked into the deodorization tower 22. The suction fan 24 is set to operate in accordance with the above operation cycle, except when the water level in the tank section 7 is lowered to the extent that it is inconvenient for the operation of the pump. The water level in the tank 7 is constantly checked by a sensor (not shown).

In the decomposing / digesting tank 2, for example, shavings (wood particles) and carbon particles are filled in advance at a filling rate of about 58% (about 5%).
It is filled as a floor material up to 100 liters, and as a degrading bacterium, 6% (volume%, about 306 liters) of mutant bacteria (facultative anaerobic bacteria: good regardless of the presence or absence of air) , Which coexists well with aerobic bacteria existing in the natural state.) Is added.

Thus, the operating conditions are set, the operation is started, and organic matter such as vegetable waste, raw fish waste and waste oil generated in the food factory is treated as an organic matter to be treated through the supply / discharge port 21 of the lateral transfer section 20. throw into. The organic substance to be treated introduced from the supply / discharge port 21 passes through the lower part of the digestion / digestion tank 2 by the screw member 20a of the horizontal transfer part 20, and the lowermost inlet of the vertical transfer part 8 provided at the axial center part thereof. Be transported to. In addition, during this period, it has already been put into the digestive digestion tank 2,
A part of the floor material located on the bottom plate 6 is slightly conveyed by the transfer cylinder portion 20.
There is also the possibility of downward mixing from the opening at the top of b.

The organic matter to be treated thus conveyed to the inlet of the vertical transfer section 8 is conveyed to the uppermost part by the screw member 8b of the vertical transfer section 8 and dropped on the uppermost cascade plate 4 in the decomposition and digestion tank 2. Is discharged.

Most of the organic matter to be treated, which has been dropped on the uppermost cascade plate 4 of the digestion / digestion tank 2, is placed on the uppermost cascade plate 4, and the stirring mechanism 9 is rotated and stirred according to the set conditions. Therefore, it is crushed while being mixed with the floor material on the cascade plate 4 by the uppermost stirring rods 9a, 9a ... And transferred in the direction of the drop ports 4a, 4a, 4a.

The stirring ports 9a, 9a ...
a, 4a, it gradually drops onto the second cascade plate 4 from there, but the second cascade plate 4
As described above, the drop ports 4a, 4a, 4a formed on the uppermost cascade plate 4 are arranged with their positions shifted by 60 degrees from those of the uppermost cascade plate 4, as described above. The organic matter to be treated that has fallen from the falling ports 4a, 4a, 4a of the above is placed on the second cascade plate 4, and even on the second cascade plate 4, the same crushing is performed by the stirring rods 9a, 9 ...・ Agitation processing is performed and it drops onto the third cascade plate 4.

At this time, since the drop openings 4a, 4a, 4a of the second-stage cascade plate 4 and those of the third-stage cascade plate 4 are also formed with a deviation of 60 degrees, the second-stage cascade plate 4 is similarly formed. The to-be-processed organic substance dropped from the drop ports 4a, 4a, 4a of the cascade plate 4 drops onto the third-stage cascade plate 4, and the same crushing and stirring process is performed, and the third-stage cascade plate 4 is processed. From the drop openings 4a, 4a, 4a of the above.

That is, as in the above-mentioned set condition, during the operation for 2 hours, the conveying cylinder portion 8a of the vertical transfer portion 8 which also functions as the rotating shaft of the stirring mechanism 9 is rotated at the rotation speed of 6 rpm, The organic substances that have been dropped fall into the cascade plates 4
And, on the bottom plate 6, it is crushed and divided into small pieces by the stirring rods 9a, 9a ... Of the stirring mechanism 9 and also mixed with the floor material such as the already introduced mutant bacterial carrier. Further, excess water also easily flows down, and in each of the cascade plates 4, the excess water is sequentially dropped from the drop ports 4a, 4a, 4a, and finally from the small holes 5, 5 on the bottom plate 6 to the tanks below. After flowing down to the part 7, the water condition becomes more appropriate.

Then, in such a state, the organic substance to be treated is sequentially placed on each of the cascade plates 4 by the stirring rods 9a, 9a ...
Is transferred to the drop ports 4a, 4a, 4a,
From here, it drops onto the lower cascade plate 4 or the bottom plate 6 and the same processing is performed.

Therefore, the gas phase condition of the organic substance to be treated is improved in this stirring, crushing and mixing process, but it is further promoted in the process of dropping from the drop ports 4a, 4a, 4a of each cascade plate 4. Moreover, the stacking of organic substances to be treated is divided by each cascade plate 4, and the organic substance to be treated at the lower side is not crushed by the load of the organic substance to be treated at the upper side, so that good gas phase conditions are maintained and ensured. .

Further, the stacking of organic substances to be treated is divided by each cascade plate 4, and not all the loads of the organic substances to be treated above are applied to the organic substances to be treated below, so that the stirring mechanism 9 is overloaded. It is possible to prevent the organic matter from being decomposed and digested in the digestion tank 2 as much as possible.
It is easy to maintain the normal operation even when it is put into the digestive digestion tank 2.

Further, the stirring rod 9a of the stirring mechanism 9 at the bottom,
9a ... is a transport cylinder 8a which is the center of rotation of each stirring rod 9a.
Instead of rotating by directly driving,
A drive chain wheel 16 installed outside the peripheral wall of the digestion / digestion tank 2 is rotationally driven by an electric motor 19, and the chain 14 engaged with the drive chain wheel 16 and the tension adjusting chain wheel 15 is attached to the tip of the stirring rod 9a. The chain-engaging teeth 11, 11 ... Provided are engaged to rotate them. Then, the rotation of the lowermost stirring rods 9a, 9a ... around the transport cylinder portion 8a as the center of rotation is carried out via the transport cylinder portion 8a.
a, 9a ..., and the stirring rod 9a of the stirring mechanism 9 at each stage,
9a ... are rotationally driven.

Therefore, a rotational driving force can be applied to the outer peripheral portions of the stirring rods 9a, 9a ... Of the lowermost stirring mechanism 9 to rotationally drive each stirring rod 9a of each stage of the stirring mechanism 9. The stirring rods 9a of the stirring mechanisms 9 can be rotationally driven with a smaller driving force as compared with the case where a rotational driving force is applied to the transporting cylinder portion 8a at the center of the rods 9a to rotate.

As a result, the electric motor 19 having a relatively small capacity can be used, the organic decomposition and digestion apparatus 1 can be downsized, and the decomposition and digestion tank 2 can be increased in capacity as much as necessary. Then, even if the organic substance to be treated is put to the limit, the electric motor 1 with a small driving force
The stirring rod 9a of each stirring mechanism 9 can be easily rotationally driven by 9 and a large amount of organic substances to be treated can be treated at one time.

In the above process, air passes through the gaps 4b formed between the cascade plates 4 and the drop openings 4a of the cascade plates 4 and the transfer cylinder 8a, so that the floor material Air can be introduced between the treated organic fractions being mixed with to enhance the activity of the aerobic bacteria present.

When the above operation is carried out and the organic substance to be treated is no longer fed from the supply / discharge port 21 and is not sent to the lateral transfer section 20, from the lowermost part of the digestion / digestion tank 2,
At first, the floor material, and then, with the lapse of time, the mixture of the floor material and the organic substance to be treated descends and enters from the opening in the upper part of the transport cylinder portion 20b. The horizontal transfer unit 20 transfers these fallen objects to the vertical transfer unit 8, and the vertical transfer unit 8 transfers them to the upper part of the digestive digestion tank 2 and sequentially re-inputs them.

As described above, in the digestion / digestion tank 2, horizontal stirring / crushing / mixing by the stirring mechanism 9 and vertical mixing by the horizontal transfer section 20 and the vertical transfer section 8 are performed.

The above operation is carried out, for example, for 2 hours and then stopped for 6 hours following this, depending on the set conditions. Then, the operation is repeated for 2 hours and then stopped for 6 hours, and so on.

In this way, the organic matter to be treated in the digestion and digestion tank 2 is aggregated together with the waste wood particles and carbon particles that have been put in as the floor material, and the action of each cascade plate 4 is also added to the growth of aerobic microorganisms. The condition is extremely suitable for the above, and it is gradually decomposed by mutant bacteria and other aerobic bacteria existing in the natural state, and decomposed into carbon dioxide and water.

Then, the excess water contained in the organic substance to be treated and the water produced in the decomposition process gradually fall in the decomposition digestion tank 2 and pass through the small holes 5, 5, ... It flows down to the tank part 7. The water that has flowed down into the tank portion 7 is pumped up by the pump device 25, and sprayed into the contact material filling portion 22b of the deodorization tower 22 through the liquid spray nozzle portion 22c.

The generated gas containing carbon dioxide and the like is
In the upper part of the decomposition digestion tank 2, it is sucked by a suction fan 24 and introduced into the contact material filling section 22b of the deodorization tower 22 through the gas introduction pipe 23.

The water flowing down to the tank portion 7 at the bottom of the digestion / digestion tank 2 also contains mutant bacteria and other aerobic bacteria. The water containing these bacteria is filled with the contact material of the deodorization tower 22. When supplied to the contact material 22b, the bacteria adhere to the contact material and proliferate while decomposing the organic matter dissolved in the water, and also the odorous components in the gas introduced into the contact material filling part 22b. , Will be decomposed by the corresponding bacteria.

Therefore, in the water supplied into the contact material filling section 22b, the organic substances contained therein are decomposed and purified, and the water is dripped into the lower tank section 22e and the drain port 22f.
Emitted from. Further, the gas introduced into the contact material filling portion 22b has its odor component removed, and the gas exhaust pipe 2
It is released into the atmosphere through 2d.

In this example, as described above, 1994
Between July 30th and October 30th, 1994, the experiment was conducted by continuously inputting 650Kg / day as an organic matter to be treated such as vegetable waste, raw fish waste and waste oil generated in a food factory. , Decomposition and digestion were carried out smoothly. Meanwhile, good temperature conditions (45-65 ° C) were maintained and the mutant bacteria did not need to be added once during the period.

Also, during that time, the floor material was consumed and became a fine powder, so on October 30, three months after the start of the operation, the supply / discharge port 21 was turned downward. Then, when the horizontal transfer section 20 was reversely transferred and the decomposition residue in the decomposition digestion tank 2 was taken out, about 400 liters were taken out. This is in addition to the original decomposition residue such as inorganic matter, Since the decomposable organic matter cannot be separated and taken out from the decomposition residue in practice, it is contained in a considerable amount.

As described above, according to this embodiment, the chain 14 of the driving means is engaged with the chain engaging teeth 11 of the outer end of the stirring rod 9a which is the stirring means, and the chain wheel for adjusting the tension is engaged. 15, the electric motor 19 gives a rotational driving force to each stirring rod 9a of the lowermost stirring mechanism 9 through the drive chain 16, so that the stirring force is applied to the center of rotation. Compared with the case, each stirring rod 9a can be rotationally driven with a smaller driving force, and even if the size of the decomposition digestion tank 2 is increased, the decomposition digestion tank 2 is filled with the organic substance to be treated. Even if added, each stirring rod 9 with a smaller driving force
a can be rotationally driven. As a result, a large amount of digested organic substances can be treated at one time, and the organic substance decomposition treatment apparatus 1 can be sufficiently applied to a large-scale facility.

Further, according to this embodiment, the driving means is
A chain drive mechanism including a chain wheel 15 for tension adjustment and a drive chain wheel 16 provided outside the peripheral wall of the digestion and digestion tank 2, an electric motor 19 as a drive mechanism for driving the chain wheel mechanism,
A chain 14 as an annular chain member that engages with the chain wheel mechanism and engages with the chain engaging teeth 11 at the outer ends of each stirring rod 9a.
Since the driving means is formed with a simple structure, the decomposition and digestion apparatus 1 can be further downsized.

Further, according to this embodiment, since the vertical transfer section (vertical transfer means) 8 is arranged at the axial center of the digestive digestion tank 2, the digestive digestion tank 2 can be further downsized. it can.

Further, according to this embodiment, the decomposition digestion tank 2
, Extending horizontally in the vertical direction of its inner peripheral wall,
Drop port 4a through which the organic matter to be treated in the digestion and digestion tank 2 falls,
The cascade plates 4 having 4a and 4a are provided in three stages, each stirring rod 9a of the stirring mechanism 9 is positioned on the cascade plate 4 for each cascade plate 4, and the organic substance to be treated is transferred to the cascade plate 4.
Since it is configured to be transferred to each of the drop ports 4a while being stirred, the stack of organic substances to be treated in the decomposition and digestion tank 2 is divided by the cascade plates 4 of each stage, and the stack of organic substances on each cascade plate 4 is divided. The treated organic matter can be crushed into pieces and stirred and mixed, and the weight of all the treated organic matter in the decomposition and digestion tank 2 is prevented from affecting the respective stirring rods 9a of the stirring mechanism 9 of the bottom portion 6. can do.

As a result, the decomposition and digestion treatment of the organic substance to be treated can be more appropriately performed, and each stirring rod 9a of each stirring mechanism 9 can be driven with a smaller driving force.

Further, according to this embodiment, the positions of the drop ports 4a, 4a, 4a of the cascade plates 4 adjacent to each other in the vertical direction among the three cascade plates 4 are such that the upper and lower cascade plates 4, 4 are located. Since they are formed so as to be offset from each other, the organic matter fragments and water that have fallen from the upper cascade plate 4 do not fall straight down to the bottom portion 6 at the bottom, but fall directly onto the cascade plate 4 directly below. After going through the same process, the cascade plate 4 or the bottom portion 6 of the digestion / digestion tank 2 therebelow is dropped.

Therefore, the stack of organic substances to be treated in the digestion and digestion tank 2 is further divided into smaller pieces by the cascade plates 4, and the organic substances to be treated are crushed into pieces on each cascade plate 4 and stirred and mixed. It is possible to reduce the weight of the organic substance to be treated in the decomposition and digestion tank 2 relating to each stirring rod 9a of the stirring mechanism 9 of the bottom 6 and each stirring rod 9a arranged on each cascade plate 4, 4, 4. can do. As a result, the decomposition and digestion treatment of the organic substance to be treated can be more appropriately performed, and each stirring rod 9a can be driven with a smaller driving force.

Further, according to this embodiment, the vertical transfer unit 8
Is rotatably arranged at the axial center of the digestion and digestion tank 2, and the inner ends of all the stirring rods 9a, 9a ...
a, each stirring rod 9a of at least the lowermost stirring mechanism 9 has a chain 14 and a chain wheel 15 for tension adjustment.
Also, it is configured to be rotationally driven by the electric motor 19 via the drive chain wheel 16 and to rotate together with the transport tube portion 8a, thereby driving the other stirring rods 9a connected to the transport tube portion 8a to rotate. Therefore, the plurality of stirring rods 9a, 9a ... Can be driven with a smaller driving force, and the digestion and digestion apparatus 1 can be further downsized.

In the above embodiment, the cascade plates 4 are provided in three stages, but the number of stages is not limited to three.
Further, even if the cascade plate 4 is not provided, the required driving force is larger than that provided, but the stirring rods 9a can be rotationally driven with a considerably small driving force. Further, in the above embodiment, the vertical transfer section 8 is arranged at the axial center of the digestive digestion tank 2, but as described above,
It goes without saying that the present invention is not limited to this.

Furthermore, in the above embodiments, the present invention is applied to the case of treating organic matter to be treated such as vegetable waste, raw fish waste and waste oil generated in a food factory, but the present invention is not limited to this. It can also be applied to the case of treating an organic substance to be treated such as human waste, and in this case, the horizontal transfer unit 20, the vertical transfer unit 8 and the stirring mechanism 9 are operated in a cycle of operating for 1 hour and then for 7 hours. Then, the stirring mechanism 9 was rotated at a rotation speed of 5 rpm to obtain an appropriate treatment result. In this case, the decomposing and digesting tank 2 is previously provided with sawdust (wood particles).
And mineral particles were filled as a flooring material so that the filling rate was about 67%, and photosynthetic bacteria were used as degrading bacteria.

Under the above conditions, from July 30, 1994 to 19
During the three months of October 30, 1994, an experiment of the digestive digestion treatment of human waste was conducted by the digestive digestion apparatus 1 of this example. When human waste was continuously added at a rate of 260 liters / day, the odor disappeared and no fly was generated. In addition, the temperature did not rise, and during this period, it was not necessary to add additional photosynthetic bacteria.

[0122]

According to the organic substance decomposing / digesting apparatus of the present invention, when the organic substance to be treated is put into the vertical type decomposing / digesting tank having the heat insulating material on the peripheral wall and the moisture permeable member on the bottom. The introduced organic substance to be treated is transferred by the horizontal transfer means to the lowermost receiving port of the vertical transfer means, vertically transferred by the vertical transfer means, and then injected into the decomposition digestion tank from the upper part thereof.

The organic substance to be treated put into the digestive digestion tank is a stirring means composed of a rod-shaped member arranged from the vertical axis of the axial center of the digestive digestion tank toward the peripheral wall, and the vertical axis is the center. By stirring means arranged rotatably, it is rotated and stirred,
While being crushed into pieces, and mixed, they are transferred to the opening of the lateral transfer means.

Then, the organic substance to be treated, which has fallen from the opening to the horizontal transfer means, is again transferred to the upper part of the decomposition digestion tank by the horizontal transfer means and the vertical transfer means, and is dropped therein.

Therefore, while the horizontal transfer means, the vertical transfer means and the stirring means are in operation, the organic matter to be treated put in the decomposition and digestion tank is stirred by the stirring means and finally from the opening. The cycle of vertical movement is repeated, in which it falls on the horizontal transfer means, is carried to the upper part of the digestive digestion tank by the horizontal transfer means and the vertical transfer means, and returns to the upper part.

In such an operation process, the driving means applies the rotational driving force from the outer end portion of the rod-shaped member of the stirring means to rotationally drive the stirring means. Compared to the case of applying force, the stirring means can be rotationally driven with a smaller driving force, and even if the size of the digestive digestion tank is increased, the organic substance to be treated is filled in the digestive digestion tank to the full extent. Even if charged, the stirring means can be rotationally driven with a smaller driving force. As a result, a large amount of organic matter to be digested can be treated at one time, and it can be sufficiently applied to a large-scale facility.

Further, in the above case, as described in claim 2, the drive means is a chain wheel mechanism including a drive chain wheel and a tension adjusting chain wheel provided outside the peripheral wall of the decomposition and digestion tank. A rotary driving body for driving the drive chain wheel of the chain wheel mechanism, the chain drive teeth of the chain wheel mechanism, the tension adjusting chain wheel, and chain engaging teeth formed on the outer ends of the rod members of the stirring means. When configured with an annular chain member circumscribing each of the partially arcuate chain guide members arranged between the adjacent rod-shaped members in a state in which the vicinity of the outer ends of the adjacent rod-shaped members are interconnected, The driving means can have a simple structure, and the digestion and digestion apparatus can be downsized.

Further, as described in claim 3, when the vertical axis arranged in the central portion of the decomposition and digestion tank is formed of a pipe body and the vertical transfer means is arranged in the vertical axis. Since there is no vertical transfer means that rises outside the digestive digestion tank,
The size can be further reduced.

[0129] Further, as described in claim 4, the decomposition and digestion tank is a cascade plate having a dropping port for dropping the organic matter to be treated, which is in a horizontal state in a vertical direction of an inner peripheral wall thereof. A cascade plate having one or more stages extending is provided, and the stirring means is positioned at least on each cascade plate in order to transfer the organic matter to be treated to the drop port while stirring the organic substance on the cascade plate. When configured, the stack of organic substances to be treated in the digestive digestion tank is divided by a cascade plate, and the organic substances to be treated can be crushed into small pieces on the cascade plate and agitated / mixed to decompose. It is possible to prevent the weight of all the organic substances to be treated in the digestion tank from being applied to the stirring means located at the bottom. As a result, it is possible to more appropriately perform the crushing, stirring, mixing, and the like of the organic substance to be treated, and it is possible to drive the stirring means with a smaller driving force.

Further, as described in claim 5, two or more stages of the cascade plates are arranged in the vertical direction midway of the inner peripheral wall of the digestion / digestion tank, and the cascade plates are mutually adjacent in the vertical direction. In the case where the positions of the drop ports of the above are shifted and arranged in the upper and lower cascade plates, the organic matter pieces and water to be treated that have fallen from the upper cascade plate do not fall straight down to the bottom. , Falls directly on the cascade plate, goes through the same process, and then falls on the cascade plate or the bottom of the digestion / digestion tank therebelow, resulting in sufficient stacking effect of organic substances to be treated and crushing / stirring.・ Mixing effect can be obtained.

That is, the stack of organic substances to be treated in the digestion and digestion tank is finely divided by a cascade plate, and the organic substances to be treated are crushed into pieces on each cascade plate, and
It is possible to stir and mix, and the weight of the organic substance to be treated in the decomposition and digestion tank on the stirring means at the bottom and the stirring means arranged on each cascade plate can be reduced. As a result, the decomposition and digestion treatment of the organic substance to be treated can be more appropriately performed, and the stirring means can be driven with a smaller driving force.

Further, as described in claim 6, a plurality of stages of stirring means are provided on the vertical axis, and the driving means is arranged to drive the stirring means of any stage among them. When engaged with the outer end of each rod-shaped member, the drive means can be selected at any convenient position,
Since the driving force can be transmitted through the portion having a large diameter, it is possible to drive the plurality of stirring means with a smaller driving force.

[Brief description of drawings]

FIG. 1 is a side cross-sectional explanatory view of an apparatus according to an embodiment.

FIG. 2 is a plan view of a cascade plate.

FIG. 3 is a schematic plan explanatory view of a cascade plate and a stirring mechanism in a state where the inside of the digestive digestion tank of the apparatus of one embodiment is viewed from above.

FIG. 4 is an explanatory plan cross-sectional view of the lowermost stirring rod and the drive mechanism in the digestive digestion tank of the apparatus according to the first embodiment.

FIG. 5 is a partially cutaway side view of the drive mechanism of the apparatus according to the first embodiment.

[Explanation of symbols]

 1 Decomposition / digestion apparatus 2 Decomposition / digestion tank 2a Lid 3 Heat insulating material 4 Cascade plate 4a Drop port 4b Gap 5 Small hole 6 Bottom plate 7 Tank part 8 Vertical transfer part 8a Conveying cylinder part 8b Screw member 8c, 19 Electric motor 8d Bearing 9 Stirring Mechanism 9a Stirring rod 10 Annular metal fitting 11 Chain engaging tooth 12 Upper cover 13 Lower bar 14 Chain 15 Chain wheel for tension adjustment 16 Drive chain wheel 17, 18 Support plate 20 Horizontal transfer section 20a Screw member 20b Conveying cylinder section 20c Electric motor 21 Supply / Discharge Port 22 Deodorization Tower 22a Tower Main Body 22b Contact Material Filling Section 22c Liquid Spray Nozzle Section 22d Gas Exhaust Pipe 22e Tank Section 22f Discharge Port 23 Gas Inlet Pipe 24 Suction Fan 25 Pump Device 27 Cover

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshikatsu Kawasumi 1-69 Yatsu-cho, Mito City, Ibaraki Prefecture

Claims (6)

[Claims] 1. A digestive digestion tank having a peripheral wall provided with a heat insulating material and a bottom provided with a moisture permeable member, which is a vertical type digestive digestion tank into which an organic substance to be treated is introduced. A stirring means for stirring the organic matter to be treated, which is arranged from the vertical axis standing in the center toward the inner peripheral wall of the digestive digestion tank, is rotatable about the vertical axis, and has a constant angle with respect to each other. A stirring means composed of a plurality of rod-shaped members arranged at intervals, a driving means for engaging the outer end portion of each rod-shaped member of the stirring means to rotate the stirring means about the vertical axis, It is a lateral transfer means located at the lower part of the decomposition and digestion tank and transferring the received organic material to be processed in the lateral direction of the decomposition and digestion tank, and the organic material to be processed falling from the bottom of the decomposition and digestion tank to the upper part thereof. It has an opening to receive it and is put in from the outside of the decomposition and digestion tank. A lateral transfer means having a supply / discharge port for receiving or discharging the treated organic matter, and an organic matter to be treated transferred by the lateral transport means are transferred to an upper portion of the decomposing / digesting tank, and then from the upper portion of the decomposing / digesting tank. An apparatus for decomposing and digesting organic matter, comprising: a vertical transfer means that is put into the decomposing and digesting tank. 2. A chain drive mechanism comprising a drive chain wheel and a tension adjusting chain wheel provided outside the peripheral wall of the digestion and digestion tank, and a rotary drive for driving the drive chain wheel of the chain wheel mechanism. The body, the drive sheave of the sheave mechanism, the tension adjusting sheave, and the chain engaging teeth formed on the outer ends of the rod members of each of the stirring means, and the outside of each adjacent rod member. 2. The apparatus for decomposing and digesting organic matter according to claim 1, comprising an annular chain member circumscribing each chain guide member having a partial arc shape arranged between the end portions so as to be connected to each other. 3. The apparatus for decomposing and digesting organic matter according to claim 1, wherein the vertical axis is formed of a pipe, and the vertical transfer means is arranged in the vertical axis. 4. The decomposition digestion tank is a cascade plate having a drop opening through which the organic matter to be processed falls in the middle of the inner peripheral wall in the up-down direction, and one or more cascade plates extending in a horizontal state. 4. The apparatus according to claim 1, 2 or 3, wherein the stirring means is arranged at least above each cascade plate so as to transfer the organic matter to be processed to the drop port while stirring the organic matter on the cascade plate. Decomposing and digesting organic substances. 5. The cascade plate is arranged in two or more stages in the vertical direction midway of the inner peripheral wall of the digestive digestion tank, and the positions of the drop ports of the cascade plates adjacent to each other in the vertical direction are set to The apparatus for decomposing and digesting organic matter according to claim 4, wherein the upper and lower cascade plates are displaced from each other. 6. The vertical axis is provided with a plurality of stages of agitation means, and the drive means is provided at the outer end of each rod-shaped member of the agitation means of the stage so as to rotationally drive the agitation means of any of the stages. The apparatus for decomposing and digesting organic matter according to claim 1, which is engaged.