JP3011129U - Decomposition and digestion equipment for organic substances - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an apparatus capable of satisfactorily adjusting the gas phase conditions of organic substances put into a digestion and digestion tank and performing the stirring and mixing with a low load. [Structure] On the inner peripheral wall of the digestion / digestion tank 1, three stages of cascade plates 15 having drop portions 15a at three positions are fixed, and a stirring mechanism 6 is provided with a rotating shaft 6a and each of the cascade plates 15
It is composed of a four-stage stirring section 6b consisting of stirring rods 6c extending above and on the bottom plate 4 of the digestion and digestion tank 1, the rotary shaft 6a and the stirring rods 6c are in communication with each other, and the air compressor 6e is the former and the nozzle holes are n is provided in the latter. An electric motor 6d is connected to the rotating shaft 6a. At the lower part of the digestion / digestion tank 1, a transfer cylinder 7b
A horizontal transfer section 7 having an open upper part on the circumferential side is arranged to transfer organic substances to the supply / discharge port 8 or the vertical transfer section 9. At the side of the digestion / digestion tank 1, a vertical transfer unit 9 for vertically lifting up the organic substances from the horizontal transfer unit 7 and charging them into the standing vertically is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is designed to reduce the amount of raw garbage discharged from kitchens or food factories such as restaurants or cafeterias and dewatered cake of excess sludge generated from these wastewater treatment facilities into wastewater and carbon dioxide. The present invention relates to a device for eliminating organic matter, which decomposes and digests and reduces solid components.

[0002]

[Prior art]

 In one of the conventional devices of this type, a cylindrical processing container with both ends closed is laid horizontally on the support and rotatably around its axis, and the user rotates it at the end. There is a food waste processing machine in which a handle for the operation is fixedly provided, and an opening for the input of food waste is configured to be openable and closable in a part of the peripheral side of the processing container.

[0003] This conventional device is a bacterium that is said to have concentrated natural bacteria before or after throwing in garbage by opening a charging port, and which is harmless to humans, pets and plants. It is said that the raw garbage can be digested and reduced in volume by adding a regulator, 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 odor is leaked to the outside, but removal of excess water and introduction of air inside are not permitted. Since it is not carried out, it is difficult to maintain and grow aerobic bacteria, which leads to the inconvenient result that spoilage progresses.

Further, in another conventional apparatus of this type, an octagonal tubular processing container is disposed on a support body in a lateral direction and rotatably about its axis, and a raw material is formed on a part of the peripheral side of the processing container. There is a garbage-disposal machine in which the garbage inlet is configured to be openable and closable, and many small holes are made in the lid of the inlet.

[0006] 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 a lid of an input port is opened in the processing container to put raw garbage into the processing container. It is said that if the processing container is manually rotated once or twice and then left to stand, the introduced garbage can be erased and disappeared, and the bad odor is hardly noticed. Further, it is explained that the filling agent needs to be replenished because it decreases by about 10% in one year.

However, according to the tests actually conducted by the inventors of the present invention, the conventional apparatus also showed that the aerobic bacteria were not sufficiently maintained and proliferated, and the decomposition proceeded, as in the conventional example described above. The result is inconvenient.

[0008] The principle of waste treatment is to promote volume reduction, stabilization and detoxification, but with the above-mentioned conventional equipment, the conditions for the activity of aerobic bacteria cannot be adjusted, so that maintenance and growth of the aerobic bacteria is not possible. It becomes difficult, and the inconvenient results such as the putrefaction of the organic substances such as the input garbage are brought about. Therefore, the present applicant solved the above-mentioned problems of the prior art, adjusted the conditions for the growth of aerobic bacteria with a minimum amount of energy, and decomposed various organic substances, which are wastes, into water and carbon dioxide. An apparatus for decomposing and digesting organic matter has been proposed as a simple apparatus capable of reducing the volume of solid matter to a minimum (JP-A-6-246252).

[0009] This technique is a digestive digestion tank rotatably arranged around an axis, and has a plurality of small holes passing through the inside and outside, and the above digestive digestion tank with the axial center as the center. A rotation drive means for rotating and an organic matter crushing and stirring means arranged inside the decomposition and digestion tank, which is capable of crushing and stirring the organic matter introduced therein as the decomposition and digestion tank rotates. This is a device for decomposing and digesting organic substances composed of and.

This technique is excellent in that it can achieve the above-mentioned object, but it rotates the decomposition digestion tank in order to crush and stir the organic matter to be treated introduced therein by the crushing and stirring means for organic matter. In that respect, it is difficult to construct a large-sized device. Therefore, it is not suitable for the treatment of a large amount of organic waste that is increasing, but is mainly suited for the decomposition and digestion treatment of organic substances that are discarded from small-scale facilities such as restaurants and cafeterias.

In view of the above circumstances, the inventor of the present invention, therefore, has proceeded with the development of a technology capable of constructing a large-scale decomposing / digesting tank suitable for treating an increasing amount of organic waste, and has been able to produce a large amount of organic waste in a short term We have developed and proposed an organic matter decomposing device that can be installed in a narrow space, while ensuring fast speedy decomposing and digesting of excess sludge that decomposes and digests between wastewater and sewage treatment plants ( Japanese Patent Application No. 6-218011). This technology is not yet publicly known at this time.

The contents of this technique are as follows. That is, a vertical type digestive digestion tank having a heat insulating material on the side wall and a bottom portion made of a moisture permeable member, and a stirring means disposed in the above digestive digestion tank, which is put into the digestive digestion tank. A stirring means for stirring the organic substance by its own operation, and a horizontal transfer means located at the lower part of the decomposition and digestion tank for selectively transferring the organic matter to the supply / discharge port or the vertical transfer means described later. A horizontal transfer means provided with an opening at the top for receiving organic substances coming down from the decomposition and digestion tank, and a vertical transfer for pulling up the organic materials transferred by the horizontal transfer means into the decomposition and digestion tank from above It is an apparatus for decomposing and digesting organic substances, which is composed of:

According to this technique, many of the above-mentioned objects can be achieved, for example, a device equipped with a large digestive digestion tank can be installed in a narrow space, which is extremely effective. However, if the decomposition and digestion tank is made longer in the vertical direction, that is, deeper, and if a correspondingly large amount of the organic matter to be treated is added, the organic matter to be treated is piled up and the lower treated matter is processed. The load applied to the organic matter becomes large, and the load applied to the stirring means for stirring the organic matter also becomes very large. Therefore, there is a new problem that the strength needs to be increased and the power of the driving body needs to be large.

[0014]

[Problems to be solved by the device]

 In the present invention, in addition to solving the problems of the above-mentioned publicly known example, some problems of the technology of the present inventor which are not yet publicly known, that is, the vertically long digestion and digestion tank is constructed as long as necessary, Provide a device for decomposing and digesting organic matter that does not apply an excessive load to the stirring means that stirs the treated organic matter in the lower part and the treated organic matter at that position even if as much organic matter as possible to be treated is added to this. This is also the task of solution. Furthermore, it is another object of the invention to provide a decomposing and digesting apparatus which can further improve the gas phase conditions of the organic substance to be treated and can efficiently perform the elimination action.

[0015]

[Means for Solving the Problems]

 The gist of the configuration of the present invention is that a vertical digestion and digestion tank having a heat insulating material on the side wall and a bottom portion made of a moisture permeable member, and a horizontal state in the vertical direction on the inner peripheral wall of the above digestion and digestion tank. And a cascade plate having one or more stages extending in the central direction, the cascade plate having one or more discontinuously separated portions that serve as a falling portion of the organic matter to be treated, and a stirring means arranged in the decomposition and digestion tank. An agitating means for transferring the organic matter to be treated located on the cascade plate to the discontinuous separation part while agitating by the operation of the agitating means itself, and an organic matter to be treated, which is located at the lower part of the decomposition and digestion tank, Optionally, a horizontal transfer means for transferring to a supply / discharge port or a vertical transfer means to be described later, the horizontal transfer means having an opening for receiving an organic substance to be treated falling from the bottom of the decomposition and digestion tank, , Above transfer It is a device for decomposing and digesting organic matter, which comprises a vertical transfer means for pulling up the organic matter to be processed which is transferred by means and throwing it from above into the uppermost cascade plate of the decomposing and digesting tank. can do.

The decomposition and digestion tank is required to have a vertical shape so as not to expand the installation space, but a rectangular container shape, a cylindrical container shape or the like can be freely adopted as the shape. However, when the stirring means is configured to rotate about a vertically standing rotating shaft, it is not suitable unless it is a cylindrical container.

As described above, the cascade plate is for dividing the inside of the vertical decomposition digestion and digestion tank into two or more rows arranged vertically within a certain range, but in particular, When two or more stages of the cascade plates are used, it is appropriate that the cascade plates adjacent to each other in the vertical direction do not coincide with each other in the discontinuous space. Whether the cascade plate of one stage is arranged in the digestion and digestion tank or the cascade plate of two or more stages is arranged, the discharge port at the upper part of the vertical transfer means is connected to the uppermost cascade plate. It is appropriate to place it at a position where it does not vertically match the continuous separation part.

Further, as described above, the agitating means causes the organic material to be treated, such as raw garbage, which has been put into the digestion and digestion tank, by each of the cascade plates by its own operation, for example, the operation of rotating or rocking. If it is possible to crush, stir, mix, and transfer to the top and / or the bottom of the digestion / digestion tank, and to transfer to the discontinuously separated part that is the drop port formed in the cascade plate, the configuration is Be free.

For example, in the case where the digestion and digestion tank is constituted by an upright cylindrical container, the stirring means is provided on a rotary shaft that is raised along the axis of the digestion and digestion tank, and on the rotary shaft. A stirrer arranged above each of the cascade plates and above the bottom of the digestion and digestion tank, the stirrer comprising a plurality of stir bars arranged in a direction orthogonal to the rotation axis. You can Further, in the case where the stirring means is constituted so as to rotate the stirring section on the rotating shaft which is raised along the axis of the digestion / digestion tank as described above, the inner end of the cascade plate and the stirring means It is suitable to have a structure in which a gap that allows the air to flow in the up-down direction is left between the rotary shaft and the circumferential side.

In addition, in order to improve the activity of aerobic bacteria and suppress the activity of anaerobic bacteria in the digestive digestion tank, it is appropriate to provide an air introducing means. As described above, when the stirring means is composed of the rotating shaft and the stirring portion composed of a plurality of stirring rods, the rotating shaft and the stirring rods are constituted by pipe members which communicate with each other, and air is supplied to the rotating shaft. It is preferable that the means is connected, air is supplied to the stirring rod through the rotary shaft, and the air is jetted into the digestive digestion tank from one or more nozzle holes opened in the stirring rod. By doing so, it becomes possible to blow air evenly into the organic material to be treated.

However, the means for introducing air is not limited to the above, and various configurations can be freely adopted, and depending on the type and conditions of the organic matter to be treated, the air above the digestion and digestion tank can be used. It suffices to simply provide an opening for introduction. To prevent raindrops from entering even when installed outdoors, for example, the digestive digestion tank is composed of the main body of the digestive digestion tank and the lid, and one or more places at the upper end of the digestive digestion tank where the lid is placed. Alternatively, the air may be introduced by means such as providing a notch for introducing the air. As long as the introduction of air into the organic matter to be treated can be sufficiently carried out, it is further free to adopt other means.

Since the material to be treated put into the decomposition digestion tank is an organic substance, it is mostly decomposed into water and carbon dioxide by facultative anaerobic bacteria, aerobic bacteria and the like. Water sometimes becomes steam. Also, some odorous gas may be generated during the decomposition process. Therefore, it is preferable to discharge the gases that may be generated during the decomposition process through the deodorizing means. For example, a deodorizing means is connected to the decomposition and digestion tank via a gas discharge pipe, and gas is discharged through the deodorizing means. As a deodorizing means, needless to say, existing means can be freely adopted. However, with this device, the organic matter to be treated can be decomposed and digested well and decomposed into water and carbon dioxide, so odorous gases are generated comparatively little and exhausted without deodorizing means. However, there are few problems.

By the way, the supply / discharge port of the lateral transfer means is literally an inlet / outlet for inputting an organic substance to be treated from here or taking out a decomposition and digestion residue from here, but particularly, an organic substance to be treated is inputted. When doing so, it is convenient to crush it as finely as possible for later digestion. Therefore, it is preferable to attach a crushing device for crushing the organic substance to be processed to be fed to the supply / discharge port of the lateral transfer device.

Further, the water permeable member constituting the bottom of the digestion and digestion tank is intended to discharge excess water that is added together with raw garbage and water generated inside, The solid content of the organic waste to be processed, such as shredded garbage, can be composed of a punching plate material having many small holes having a diameter that cannot easily pass to the outside, or a net material. It is suitable that the diameter of the small holes or the size of the mesh is about 0.5 to 10 mm. Below this bottom part, it is necessary to construct a pan or tank that receives the falling water and temporarily holds it. Since organic matter to be treated may be dissolved in this water, it is appropriate to further decompose and digest it and drain it.

The horizontal transfer means is configured to transfer the organic matter to be processed to the vertical transfer means side according to an operator's selection, or to reversely transfer the decomposition residue and the like of the organic matter to be processed to the supply / discharge port. The structure is open as long as it is open, and the organic matter to be treated coming down the digestion and digestion tank can easily enter it. For example, it is possible to use a screw conveyor or the like in which the upper portion on the peripheral side of the conveying cylinder is open. It suffices if it is configured so that it can rotate in the forward and reverse directions.

The vertical transfer means may have any specific configuration 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. This vertical transfer means can be installed inside or outside the digestive digestion tank. Of course, it goes without saying that the transfer destination of the lateral transfer means should be determined corresponding to the installation position.

The vertical transfer means, the horizontal transfer means, and the stirring means are basically operated in conjunction with each other, and are control means for operating them for an appropriate time, regularly or irregularly. Make up. As this operation, for example, a cycle of operating for 1 hour and stopping for 8 hours may be set to be repeated, or it may be set to operate for a fixed time each time an organic substance to be treated is introduced. However, the horizontal transfer means sets an operation of feeding back the decomposition residue of the organic matter to be treated to the supply / discharge port without interlocking with the other two, that is, the vertical transfer means and the stirring means, as required. It goes without saying that it should be configured so that it can be done.

[0028]

[Action]

 The organic matter decomposing / digesting apparatus of the present invention is configured as described above, and thus can be used as follows.

In the digestive digestion tank, sawdust, dead leaves, etc. should be put in advance at a filling rate of about 60%, and photosynthetic bacteria, mutant bacteria, enzyme agents, etc. should be added if necessary. And In addition, the control means for the horizontal transfer means, the vertical transfer means and the stirring means are set to appropriate operating conditions.

After such preparation, use is started and the organic substance to be treated is put into the decomposition and digestion tank. The charging is performed using the horizontal transfer means and the vertical transfer means. While these are operating, the organic substance to be treated is introduced from the supply / discharge port. If a crushing means is attached to the supply / discharge port, the organic matter to be treated will be crushed by this and input into the supply / discharge port. The inputted organic substance to be treated is not crushed or crushed, and is transferred by the horizontal transfer means to the receiving port at the bottom of the vertical transfer means, where it is received and vertically transferred, and the above-mentioned decomposition is carried out from the discharge port at the upper end thereof. It will be dropped on the uppermost cascade plate in the digestion tank.

The organic substance to be treated, which has been dropped onto the uppermost cascade plate, is crushed and fragmented on the cascade plate by the stirring means operating in conjunction at this time, and the mixture is stirred and mixed. While being transferred, it is transferred to the discontinuously separated portion which is a drop port formed in the cascade plate. In the above process, various organic substances to be treated are mixed together, and there is a gap between the organic substances to be treated that are in close contact with each other, and air is introduced between them. It will fall on the lower cascade plate.

In addition, since the appropriate air introduction means is configured according to the type of organic matter to be treated and the conditions thereof, air is more appropriately air-gap between the organic matter to be treated in the above stirring process. Will also be introduced. In this way, the organic substance to be treated is fragmented and, while being agitated, is transferred to the discontinuously separated portion, which is the drop port of the cascade plate, and falls from there. On the other hand, in the agitation process, excess water contained in the organic substance to be treated and water generated in the process of decomposing and digesting the organic substance are also sent to the discontinuous separating portion which is the dropping port, and are dropped from here. .

Since the organic matter fragments and water to be treated that have fallen as described above do not exist at positions where the discontinuously separated portions, which are the drop ports formed in the immediately upper and lower cascade plates, vertically match, It does not fall to the bottom of the bottom, it falls on the cascading plate directly below, and through the same process as above, it further drops to the bottom of the cascade plate or dissolution tank below it. Becomes

Then, the organic matter fragments to be treated which have fallen to the bottom of the digestive digestion tank through the above-mentioned process are stirred by the stirring means, and finally introduced into the lateral transfer means through the upper opening thereof, In the same manner as described above, it is transferred to the lowermost receiving port of the vertical transfer means, received there, vertically transferred, and again dropped on the uppermost cascade plate from the discharge port at the upper end thereof.

While the horizontal transfer means, the vertical transfer means and the stirring means are operating, the organic substance to be treated, which has been put into the decomposition digestion tank, is being stirred by the stirring means on the cascade plates of each stage, The organic substances that have been transferred to the discontinuous separation part, which is the drop port, sequentially dropped from the uppermost cascade plate to the lower cascade plate, and then fell to the bottom of the digestion / digestion tank at the bottom. Then, the cycle of carrying by the vertical transfer means to the upper part of the digestion and digestion tank and returning to the uppermost cascade plate is repeated.

On the other hand, as described above, in the stirring process on each cascade plate, excess water contained in the organic material to be treated and water generated in the decomposition and digestion process of the organic substance to be treated are respectively It is sent to the discontinuous separation part that is the drop port of the cascade plate, drops from here, and then sequentially drops to the bottom of the digestive digestion tank at the bottom, it is discharged below through the bottom composed of the moisture permeable member. Become. Therefore, the water content of the organic matter to be treated on each cascade plate and on the bottom of the digestion / digestion tank can be properly adjusted.

In the above operation process, the digestion / digestion tank is divided into a plurality of stages in the vertical direction within a certain range by the cascade plate, and the to-be-treated organic substance is divided into each stage. As a result, it does not stack high enough to fill the digestion tank. Therefore, even if the organic substances to be treated in the lower part are not loaded with all the organic substances to be treated, the operation of the stirring means does not require an extremely large power, and is extremely low. It is possible to operate smoothly without the need for a strong member. Further, the organic substance to be treated which is agitated by the agitating means and has a good vapor phase condition is not crushed by the weight of the upper organic substance to deteriorate the vapor phase condition.

In a stationary process such as a stirring means, the organic substance to be treated, which has been introduced into the decomposition and digestion tank through the process of the above-mentioned operation, is crushed and stirred and mixed, and excess water is also removed, and pre-filling is performed. Agglomerate with the existing filler such as dead leaves, and it becomes a condition suitable for the growth of aerobic microorganisms, and the crushed organic particles are gradually decomposed and become carbon dioxide and water and discharged. It will be. Water is discharged from the bottom of the bottom digestion and digestion tank through the process of natural flow and forced flow, and carbon dioxide, water vapor, and other gases are provided with deodorizing means as described above. Is released into the atmosphere after being deodorized via this, and if not provided, it is directly released from the upper part of the digestion and digestion tank. Thus, depending on the nature of the organic matter to be treated, the temperature of the microorganism generally rises, and if the conditions become better, the activity of the microorganism becomes more active and the action of eliminating the components proceeds. In this way, the solid content is gradually reduced.

Since the organic matter to be treated is decomposed and digested with high efficiency, it goes without saying that if the organic matter to be treated is added every day within the capacity, the above-mentioned process is repeated. However, as long as it is an organic substance, it is discharged as carbon dioxide and water, so that solid components will hardly remain in the end.

In addition, even when the activity conditions of microorganisms are bad such as in winter, the device of the present invention uses the heat insulating material to thermally shut off the inside and outside, so that good environmental conditions generated in the digestion and digestion tank can be obtained. Is easily maintained, and highly efficient digestive digestion action is continued. In addition, the water that flows out from the bottom of the digestion and digestion tank to the lower pan or tank is decomposed and digested to dissolve the organic substances in it, and then discharged.

[0041]

【Example】

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a cylindrical digestion and digestion tank 1 is arranged in a state where its axis is upright, that is, in a vertical direction. In this example, the decomposition and digestion tank 1 is made of a corrosion-resistant metal and has a capacity of 8.8 m ³ . The circumferential side has a double structure, and the heat insulating material 2 is filled between them.

Further, as shown in FIG. 1, on the inner peripheral wall of the digestion / digestion tank 1, three cascade plates 15, 15, 15 which are vertically spaced from each other and jut out toward the center side are arranged. As shown in FIG. 2, the one-stage cascade plate 15 is formed by cutting a doughnut-shaped basic plate material at three locations and cutting it out at three places to form the drop openings 15a, 15a which are sector-like discontinuously spaced portions. , 15a are formed. As shown in FIG. 2, in this example, each of the drop openings 15a is a sector-like discontinuously spaced part having an angular width of about 30 degrees, and each of the drop openings 15a is provided on the one-stage cascade plate 15. , 120 ° angular intervals between centers, as described above, it is configured in three places.

The upper and lower three cascade plates 15, 15, 15 are arranged such that their uppermost and lowermost drop ports 15a, 15a, 15a are displaced by 60 degrees as shown in FIG. It is arranged as follows. Therefore, the drop openings 15a, 15a, 15a of the uppermost cascade plate 15 and the drop openings 15a, 15a, 15a of the second-stage cascade plate 15 are located at positions 60 degrees apart from each other, and The 15 drop ports 15a, 15a, 15a and the lowermost part, that is, the drop ports 15a, 15a, 15a of the third stage cascade plate 15 are arranged in the same vertical position.

As described above, since the cascade plates 15, 15, 15 have a donut-shaped basic shape, the upper and lower parts of the cascade plate 15, 15, 15 are separated from the outer circumference of the rotating shaft 6a of the stirring mechanism 6 which will be described later. A sufficient gap 15b is left to ensure the air flow between the cascade plates 15, 15, 15.

A bottom plate 4 having a large number of small holes 3, 3, ... Perforated is fixed in the middle of the lower portion of the decomposition and digestion tank 1, and water flowing down through the small holes 3, 3 ,. The holding tank unit 5 is configured.

The decomposition and digestion tank 1 is provided with a stirring mechanism 6 that also serves as a means for introducing air into the decomposition and digestion tank 1. A rotary shaft 6a is erected along the axis of the digestion / digestion tank 1, and a four-stage stirring section 6b is formed on the rotary shaft 6a at intervals in the upper and lower directions. As shown in FIG. 1, the uppermost stirrer 6b is above the uppermost cascade plate 15, the second stirrer 6b is above the second cascade plate 15 and the third stirrer. 6b is located above the third cascade plate 15, and the bottom stirring section 6b is located above the bottom plate 4.

Each stirring section 6b is composed of three stirring bars 6c, 6c, 6c extending horizontally and in the radial direction at a constant angle interval of 120 degrees from the rotating shaft 6a. As shown in FIG. 3, the stirring bars 6c, 6c, 6c of the stirring sections 6b, 6b located immediately above and below are arranged at a position offset by 60 degrees. In the figure, the stirring rods 6c, 6c, 6c of the stirring unit 6b of the second stage are drawn with parallel diagonal lines to distinguish them from those of the uppermost stage. The second cascade plate 15 is also drawn with parallel diagonal lines so as to be separated from the uppermost cascade plate 15. The rotary shaft 6a penetrates the bottom plate 4 and extends to the lower part thereof, and an electric motor 6d is connected to the lower end of the rotary shaft 6a via a speed reducer.

Each of the rotating shaft 6a and the stirring rods 6c, 6c ... Is made of a pipe member and connects the two in a communicating state. A plurality of nozzle holes n, n ... Are opened in each of the stirring rods 6c, 6c. An air conditioner press 6e is connected to the upper end of the rotary shaft 6a. The air compressor 6e is rotatably connected using a universal joint.

However, when the rotating shaft 6a of the stirring mechanism 6 is rotated by the action of the electric motor 6d, each of the cascade plates 15 in the digestive digestion tank 1 is caused by each of the stirring portions 6b composed of the stirring rods 6C, 6c, 6c. The organic substances to be treated on the bottom plate 4 and the bottom plate 4 are crushed, stirred, and transferred, and the organic substances to be treated are successively dropped onto the respective cascade plates 15 or the bottom plate 4 below through the respective drop openings 15b. . In such a process, the gas phase condition between the treated organic matter pieces becomes favorable, and further, these treated organic matter pieces are dispersed on the cascade plate 15 and the bottom plate 4 of each stage, so that the total amount is piled up. As in, the large load is not applied to the lower part. Therefore, the improved gas phase conditions will not be broken, and the electric motor 6d of the stirring mechanism 6 for crushing / stirring and transferring them will not be overloaded.

On the other hand, when the air compressor 6e operates, the compressed air is sent to each stirring rod 6c through the rotating shaft 6a formed of a pipe member, and through the nozzle holes n 1, n 2 ... It will be ejected between the treated organic matter pieces. Therefore, the air can be blown very uniformly and satisfactorily between the pieces of organic matter to be treated, and the vapor phase condition becomes better.

Further, right below the bottom plate 4, a lateral transfer section 7 is constructed with a slight offset from the axial center of the digestive digestion tank 1. The lateral transfer section 7 is composed of a screw conveyor, and the upper side of the transfer cylinder section 7b which covers the screw member 7a is cut out and opened, and the portion of the bottom plate 4 along the lateral transfer section 7 is also cut. A cutout is provided so that the organic substance to be treated, which is crushed and stirred on the bottom plate 4 while being crushed and agitated by the agitator 6b, can fall into the conveyor 7b through this aperture.

A feed / discharge port 8 for the organic substance to be treated is connected to one end (the left end in FIG. 1) of the lateral transfer section 7. The supply / discharge port 8 is rotatably arranged around the axis of the lateral transfer section 7 so that it can be directed downward when used as a discharge port. An electric motor 7c is connected to the same end so that the screw member 7a of the screw conveyor can be driven to rotate in the forward and reverse directions.

A receiving port at the lower end of the vertical transfer unit 9 is connected to the other end (right end in FIG. 1) of the horizontal transfer unit 7. The vertical transfer unit 9 is upright on the outer side of the digestion and digestion tank 1, and the vertical transfer unit 9 is also constituted by a screw conveyor. In the lower part, a part of the conveying cylinder portion 9b which covers the screw member 9a is cut out and connected to the end of the lateral transfer portion 7. An electric motor 9c is connected to the lower end of the screw member 9a. Further, at the upper end of the vertical transfer section 9, a discharge port 9d having its tip protruding from the transfer cylinder section 9b to the upper part of the digestive digestion tank 1 is provided. The discharge outlet 9d is positioned so that the organic substance to be processed discharged therefrom is placed on the uppermost cascade plate 15 in general.

On the other hand, a deodorization tower 10 is attached to the outside of the decomposition digestion tank 1. This constitutes a contact material filling portion 10b in which the contact material is filled in the middle portion of a cylindrical tower body 10a, and a gas spray pipe 10d rising from the liquid spray nozzle portion 10c and the contact material filling portion 10b is formed above the contact material filling portion 10b. A tank portion 10e is provided below the contact material filling portion 10b, and the tank portion 10e for holding the water that drops in a drop shape from the contact material filling portion 10b is provided. The tank portion 10e is provided with a drainage port 10f for discharging the water accumulated therein.

A gas introduction pipe 11 for introducing the gas from the decomposing and digesting tank 1 is connected to the contact material filling section 10b of the deodorizing tower 10, and further, the decomposing and digesting tank 1 is connected to the liquid spray nozzle section 10c. The pump device 12 is connected so that the water that has flowed down to the lowermost tank portion 5 is pumped up by the pump device 12 and fed. A suction fan 13 for sucking gas is inserted in the middle of the gas introduction pipe 11.

Reference numeral 14 in the figure denotes an upper lid of the digestive digestion tank 1.

By the way, the horizontal transfer unit 7, the vertical transfer unit 9, the stirring mechanism 6, and the pump device 12 are basically operated in conjunction with each other, and are operated at a desired time, periodically or irregularly. And a control unit (not shown) for operating the above. This operation can be set, for example, 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 is introduced. Of course, in the horizontal transfer section 7, if necessary, the organic substance decomposition residue or the like is supplied to the supply / discharge port 8 without interlocking with other two members, that is, the vertical transfer section 9 and the stirring mechanism 6. It is configured so that it can perform the reverse sending operation.

The apparatus for decomposing and digesting organic matter according to this embodiment is constructed as described above, and can be used as follows.

Prior to the start of operation of this device, conditions are set in the control unit in advance. In this example, the horizontal transfer section 7, the vertical transfer section 9 and the agitating mechanism 6 are operated in a cycle in which they are stopped for 6 hours after operating for 2 hours, and the agitating mechanism 6 rotates the rotating shaft 6a at a rotation speed of 6 rpm. It was set to rotate. The deodorization tower 10 has a pump device 12 for feeding the water flowing down to the bottom tank part 5 of the digestion and digestion tank 1 and a suction fan 13 for sucking the gas in the decomposition and digestion vessel 1 and feeding it to the deodorization tower 10. It was set to operate all the time except when the water level in part 5 dropped to the extent that it would be inconvenient for pump operation. The water level in the tank 5 is constantly checked by a sensor (not shown).

Further, in this example, the decomposing digestion tank 1 was previously filled with sawdust (wood particles) and carbon particles as a flooring material until a filling rate of about 58% (about 5100 liters), and used as decomposing bacteria. , 6% (volume%, about 306 liters) of mutant bacteria against flooring (facultative anaerobic bacteria: works well regardless of the presence or absence of air. Coexisting) was added.

In this way, the operating conditions are set, the operation is started, and the organic substance to be treated is fed from the feed / discharge port 8 of the lateral transfer section 7. Here, organic substances such as vegetable scraps, raw fish scraps, and waste oil generated at food factories were added.

These organic substances to be treated pass through the lower part of the digestive digestion tank 1 by the screw member 7 a of the horizontal transfer section 7 and are carried to the lowest receiving port of the vertical transfer section 9. During this time, a part of the floor material that has already been put into the digestion and digestion tank 1 and located on the bottom plate 4 may slightly descend and mix from the upper side where the transfer tube portion 7b is open. The to-be-processed organic substance thus carried to the receiving port of the vertical transfer section 9 is further carried to the uppermost part by the screw member 9a of the vertical transfer section 9 and put into the uppermost part of the decomposition and digestion tank 1.

Most of the organic matter to be treated put in the upper part of the digestion and digestion tank 1 is placed on the uppermost cascade plate 15, and the stirring mechanism 6 is first rotated and stirred according to the set conditions. Therefore, the organic substances to be treated are mixed with the floor material on the cascade plate 15 and are crushed and transferred in the direction of the drop ports 15a, 15a, 15a, and gradually from the second stage cascade plate 15 It will fall on top. The same operation is performed on the second cascade plate 15, the organic substance to be processed falls on the third cascade plate 15, and the same operation is performed on the bottom plate 4.

That is, as in the above-mentioned set conditions, during the operation for 2 hours, the rotating shaft 6a of the stirring mechanism 6 is rotated at a rotation speed of 6 rpm, and the organic substance to be treated is charged in each cascade as described above. As the stirring mechanism 6 rotates on the plate 15 and the bottom plate 4, the stirring rods 6c, 6c ... crush and fragment into small lumps, and mix with the floor materials such as already-supplied mutant bacteria carriers. Become. Excessive water also easily flows down, and in each cascade plate 15, the water gradually drops from the drop ports 15a, 15a, 15a, and finally to the tank portion 5 below the small holes 3, 3 ... of the bottom plate 4. The water will flow down and the water condition will be more appropriate. Then, in such a state, the organic substance to be treated is sequentially transferred on the respective cascade plates 15 by the stirring rods 6c, 6c, 6c, and moves to the drop ports 15a, 15a, 15a, and from there to the next stage. The same is done by dropping onto the cascade plate 15 or onto the bottom plate 4.

Therefore, the organic substance to be treated has a good gas phase condition in the stirring, crushing, and mixing process, and is further promoted in the process of dropping from the drop ports 15a, 15a, 15a of each cascade plate 15, Moreover, the stack of organic substances to be treated is divided by each cascade plate 15 and the lower one is not crushed by the load of the upper one, so that the gas phase condition can maintain a good state. Further, as described above, the stacking of the organic substances to be treated is divided by each cascade plate 15, and the load of scraping the upper part thereof is not applied. Therefore, the stirring mechanism 6 may be overloaded. It is easy to maintain normal operation even if a maximum amount of organic matter to be treated is put into the decomposition and digestion tank 1.

Further, in the process of the operation of the stirring mechanism 6 described above, the air compressor 6e is also operating at the same time, and the compressed air generated by this is sent to the stirring rods 6c, 6c ... Through the rotary shaft 6a. , The air is ejected from the nozzle holes n, n, so that the air is surely and uniformly introduced between the organic material pieces being stirred and being mixed with the floor material, and the activity of the aerobic bacteria present. Can be active.

When the organic substance to be treated is not fed from the supply / discharge port 8 and is no longer sent to the lateral transfer section 7, the floor material is released from the bottom of the digestion / digestion tank 1 first, and then the time is consumed. With the passage of time, the mixture of the floor material and the organic substance to be treated comes into and descends from the opening in the upper part of the transfer cylinder part 7b, and this is carried to the vertical transfer part 9, and by this vertical transfer part 9, the digestive digestion tank 1 It will be transported to the upper part of and will be re-introduced sequentially. Thus, in the digestion / digestion tank 1, horizontal stirring and crushing mixing by the stirring mechanism 6 and vertical mixing by the horizontal transfer section 7 and the vertical transfer section 9 are performed.

The above operation is carried out for 2 hours according to the above-mentioned set conditions, and is stopped for the next 6 hours. The operation is repeated for 2 hours and then stopped for 6 hours, which is repeated.

In this way, the organic matter to be treated in the decomposition and digestion tank 1 is aggregated together with the slag particles and carbon particles that have been put in as the floor material, and as described above, also acts on the cascade plates 15, 15, 15. In addition, it becomes a condition very suitable for the growth of aerobic microorganisms, and is gradually decomposed by mutant bacteria and other naturally occurring aerobic bacteria to carbon dioxide and water.

As described above, the excess water contained in the organic substance to be treated and the water produced in the decomposition process thereof gradually fall in the digestive digestion tank 1 and pass through the small holes 3, 3, ... In the bottom plate 4. It flows down to the tank portion 5 below it. The water flowing down to the tank portion 5 is pumped up by the pump device 12 and spray-supplied to the contact material filling portion 10b of the deodorization tower 10 through the liquid spray nozzle portion 10c. The generated gas containing carbon dioxide and the like is sucked by the suction fan 13 in the upper portion of the decomposition digestion tank 1 and introduced into the contact material filling section 10b of the deodorization tower 10 through the gas introduction pipe 11.

The water flowing down to the lowermost tank portion 5 of the decomposition and digestion tank 1 also contains the mutant bacteria and other aerobic bacteria, and as described above, this is the contact material of the deodorization tower 10. When supplied to the filling part 10b, the bacteria adhere to the contact material and proliferate while decomposing the organic matter dissolved in the water, and further, as described above, the gas introduced into the contact material filling part 10b. The odorous components inside will also be decomposed into the corresponding bacteria.

However, the water supplied into the contact material filling section 10b is decomposed by the organic substances contained therein and is purified, and drops into the lower tank section 10e, and also into the contact material filling section 10b. The introduced gas also has its odor component removed and is released into the atmosphere through the gas exhaust pipe 10d. The water dropped in the tank portion 10e is drained through the drain port 10f.

In this example, as described above, 650 kg of vegetable scraps, raw fish scraps, waste oil, etc., generated in the food factory between July 21, 1994 and October 20, 1994 are directly used. When the input was continued at the input rate of / day, the digestion and digestion were carried out smoothly. Meanwhile, good temperature conditions (45 to 65 ° C.) could be maintained. Mutant bacteria did not need to be added once during the period. Also, the floor material will be consumed and become a fine powder, so at the end of the period, which is three months after the start of implementation, that is, on October 20, after the supply / discharge port 8 is turned downward, The horizontal transfer unit 7 was reversely transferred, and the decomposition residue in the decomposition digestion tank 1 was taken out. About 400 liters were taken out, but in addition to the original decomposition residue such as inorganic matter, degradable organic matter is contained in a considerable amount because it cannot be separated and taken out from the decomposition residue. Is.

Further, this apparatus was also used for decomposing and digesting human waste. The implementation period is from July 21, 1994 to October 20, 1994. In this case, the horizontal transfer section 7, the vertical transfer section 9 and the stirring mechanism 6 are operated in a cycle of operating for 1 hour and then stopped for 7 hours, and the stirring mechanism 6 is set to rotate at a rotation speed of 5 rpm. did. The pump device 12 for sending water to the deodorization tower 10 and the suction fan 13 for sending gas were set to be constantly operated. The decomposition and digestion tank 1 was previously filled with sawdust (wood particles) and mineral particles as a floor material so that the filling rate was about 67%. A photosynthetic bacterium was used as a degrading bacterium.

When human waste was continuously added at a rate of 260 liters / day, the odor disappeared and no fly was generated. Further, the temperature did not rise. No additional input of photosynthetic bacteria was required.

[0076]

[Effect of device]

 In the present invention, the stirring means does not simply stir and mix the organic matter to be treated put in the digestive digestion tank, but constructs one or more cascade plates in the digestive digestion tank, and on each cascade plate, Since the stirring means is configured so as to crush and stir the organic material to be processed and to transfer it to the drop port, the stacked organic material in the vertical direction is divided by each cascade plate, and the load on the upper side is divided. The one below it will not be received.

Therefore, the load on the stirring means is reduced, and even a driving body with a small capacity can be driven. In addition, in the process of falling from the drop port of the cascade plate, the dispersed state of the organic matter to be treated is promoted, and the gas phase conditions are improved.In addition, after the drop, the organic matter to be treated is placed on each cascade plate or in the digestive digestion tank. On the bottom, the weight of the organic matter to be treated at the top does not crush that at the bottom, so that good gas phase conditions are not destroyed. Thus, even when compared with the technology of Japanese Patent Application No. 6-218011 proposed by the applicant of the present invention and not yet known, the decomposition and digestion rate is improved by about 30%.

Further, as described above, since the horizontal transfer means and the vertical transfer means are provided to move the organic material to be treated in the lower part of the digestion and digestion tank upward and drop it, the organic material to be processed in the upper portion is lowered. There is also vertical circulation in which the organic matter to be processed that has reached the bottom moves to the top and is dropped, and the stack of organic matter in the vertical direction is separated by installing the cascade plate of one or more stages. Combined with this, even if the decomposition and digestion tank is configured to have a vertical shape and a high height, stirring and mixing of the organic substance to be treated inside is performed extremely well, and as described above, the gas phase conditions are favorable. Since it can be retained, there is an advantage that the digestive digestion action can be performed well.

As described above, since the organic substance to be treated can be decomposed and digested well even if it is configured in a vertical shape with a high height, the height can be further increased to a large capacity, while Since it is a vertical type, it is possible to construct a large capacity dissolution tank in a much smaller installation space than a horizontal type.

Further, both the conventional example and the technique disclosed in Japanese Patent Application Laid-Open No. 6-246252 proposed by the applicant of the present invention have a constitution in which the decomposition and digestion tank is rotated, whereby the organic substance to be treated inside is stirred and mixed. However, in contrast to this, the applicant of the present invention proposes that the digestion / digestion tank is of a vertical fixed type according to Japanese Patent Application No. 6-218011, which has not yet been publicly known, and agitates the inside thereof by its own operation. We proposed a technology that facilitates the upsizing of the digestion and digestion tank by constructing a stirring means that acts, and in the present invention, by adding a cascade plate to it, it is possible to further upsize it. This enables more efficient decomposition and digestion of large amounts of organic waste, which is currently being demanded.

In the present invention, the decomposition and digestion tank is constituted by an upright cylindrical container, and the stirring means is rotated along the axial center of the decomposition and digestion tank, and the rotation shaft. In addition, the above-mentioned agitating section arranged above each cascade plate and above the bottom of the digestion / digestion tank, and comprising a plurality of agitating rods arranged in a direction orthogonal to the rotation axis. Further, the rotating shaft of the stirring means and the stirring rod are constituted by a pipe member that communicates with each other, and the air supply means is connected to the rotating shaft, through which air is fed to the stirring rod, and the stirring rod is opened. When air is ejected from one or more of the nozzle holes described above, air can be blown from the nozzle holes of the stirring rod into the gap between the pieces of the organic material to be processed during the stirring and mixing process of the organic material to be processed. Blows air into the organic matter to be treated reliably and uniformly Therefore, the gas phase conditions are improved, the activity of aerobic bacteria is improved, and the decomposition and digestion of the organic matter to be processed proceeds with high efficiency.

A large number of fine spaces are generated in the organic substance piece to be treated by the action of the cascade plate, and the gas phase condition is improved. Therefore, in combination with the action of the air supply means, the warm air into the organic substance to be treated is combined. Since it can also be supplied satisfactorily, it can sufficiently decompose and digest even in cold regions.

In the present invention, as described above, the stirring means, the lateral transfer means, and the vertical movement means improve the stirring and mixing of the organic substance to be treated, whereby the organic matter to be treated is charged in advance or in the middle thereof. It promotes the growth of aerobic bacteria based on the gas phase conditions while improving the mixing with the floor material which is a bacterial carrier that may occur. In this way, the decomposition and digestion of the organic matter to be treated can be performed with high efficiency. That is, the organic matter to be treated can be decomposed into almost water and carbon dioxide with high efficiency and the volume of solid matter can be reduced to the minimum.

Further, the excess water generated by the decomposition and digestion action or contained at the time of adding the organic substance to be treated flows down from the bottom of the decomposition and digestion tank, and the water state is also adjusted by this. The excess water also has a function of separating and flowing down from the organic substance to be treated which is held by the stirring operation by the stirring means, which also adjusts the water state.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of an embodiment.

FIG. 2 is a plan view of a one-stage cascade plate according to an embodiment.

FIG. 3 is a schematic plan view of the cascade plate and the stirring mechanism when the inside of the digestion / digestion tank is viewed from the uppermost portion (the stirring rods in the stirring portion in the second stage are drawn with parallel diagonal lines to distinguish them from those in the uppermost stage). , Is drawn in parallel with the second cascade plate to distinguish it from that of the top).

[Explanation of symbols]

 1 Decomposition / digestion tank 2 Heat insulating material 3 Small hole 4 Bottom plate 5 Tank part 6 Stirring mechanism 6a Rotating shaft 6b Stirring part 6c Stirring rod 6d Electric motor 6e Air compressor 7 Horizontal transfer part 7a Screw member 7b Conveying cylinder part 7c Electric motor 8 Supply / discharge Outlet 9 Vertical transfer part 9a Screw member 9b Conveying cylinder part 9c Electric motor 9d Discharge port 10 Deodorizing tower 10a Tower body 10b Contact material filling part 10c Liquid spray nozzle part 10d Gas exhaust pipe 10e Tank part 10f Drain port 11 Gas introduction pipe 12 Pump Device 13 Suction fan 14 Upper lid 15 Cascade plate 15a Drop port 15b Gap n Nozzle hole

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

Claims (6)

[Scope of utility model registration request] 1. A vertical digestive digestion tank having a heat insulating material on a side wall thereof and a bottom portion formed of a moisture permeable member, and a single step extending vertically in the middle of an inner peripheral wall of the digestive digestion tank. The above-mentioned cascade plate, which is a cascade plate having one or more discontinuously spaced apart portions serving as a falling portion of the organic substance to be treated, and a stirring means arranged in the decomposition and digestion tank, and is located at least on the cascade plate. Stirring means for transporting the treated organic matter to the discontinuous separation portion while stirring by the operation of the stirring means itself, and the treated organic matter located at the lower part of the decomposition and digestion tank, selectively supplying and discharging the treated organic matter. Horizontal transfer means for transferring to an outlet or a vertical transfer means to be described later, the horizontal transfer means having an opening at the top for receiving an organic substance to be treated falling from the bottom of the decomposition and digestion tank, and the horizontal transfer means Being treated A vertical transfer means to introduce from above the top of the cascade plate on the digestion tank pulling organics in digestion apparatus constructed organics. 2. A structure in which two or more cascade plates are arranged midway in the vertical direction of the inner peripheral wall of the digestion and digestion tank so that the discontinuously spaced portions of the cascade plates immediately adjacent to each other do not coincide with each other in the vertical direction. The apparatus for decomposing and digesting organic matter according to claim 1. 3. The apparatus for decomposing and digesting organic matter according to claim 1, wherein the discharge port at the upper part of the vertical transfer means is arranged at a position which does not vertically coincide with the discontinuously spaced part of the uppermost cascade plate. 4. The decomposition digestion tank is constituted by an upright cylindrical container, and the stirring means is rotated along the axis of the decomposition digestion tank, and the rotary shaft is provided with each of the cascades. The organic substance according to claim 1, which comprises a stirring unit disposed above the plate and above the bottom of the digestion and digestion tank, the stirring unit including a plurality of stirring rods arranged in a direction orthogonal to the rotation axis. Decomposition and digestion equipment. 5. The rotating shaft of the stirring means and the stirring rod are constituted by a pipe member which communicates with each other, and an air supply means is connected to the rotating shaft, and air is supplied to the stirring rod through the pipe member.
The apparatus for decomposing and digesting organic matter according to claim 4, wherein air is ejected from one or more nozzle holes opened in the stirring rod. 6. The decomposition of organic matter according to claim 4, wherein a gap is left between the inner end of the cascade plate and the circumferential side of the rotating shaft of the stirring means, through which air can be circulated in the vertical direction. Digestive equipment.