JP2003039051A - Method and apparatus for treating low moisture-active organic waste - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently carry out fermentation even of organic wastes containing animal protein with low moisture activity. SOLUTION: The apparatus comprises a rotary cylindrical body 1 and stirring blades 31-34 attached to a rotary shaft 23 and the inside of the rotary cylindrical body is divided into a plurality of treatment zones A, B, C1, and C2 for solubilization, drying, and fermenting steps and through which the organic substances are moved in the axial direction. The rotary shaft 23 is divided so as to be rotated and driven corresponding to some or all of the treatment zones and some or all of the treatment zones are independently provided with water spraying means 51a, 51b, and 51c and air ventilation means 40, 44a, 44b, and a control means for controlling rotation, controlling the air ventilation amount, and controlling the spraying of water based on the water content data set for every treatment zone and adjusted to the solubilization step, drying step, and fermentation step. Material treatment can be carried out by properly stirring and mixing the material in a plurality of the treatment zones where the solubilization step, drying step, and fermentation step are carried out and thus raw materials containing animal protein and subjected to the heating treatment can be fermented and decomposed at a high speed to an advanced extent.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to raw garbage, livestock dung,
Agricultural waste, food processing residues, sludge, and other organic waste containing low-water-activity organic matter are aerobically fermented for effective recovery and reduction as soil conditioners and organic fertilizers. The present invention relates to a fermentation treatment method and a fermentation treatment apparatus for organic waste that is solubilized to facilitate disposal.

[0002]

2. Description of the Related Art When an organic material having a high water content is used for composting an organic material by fermentation,
Generally, the material is dried before being adjusted to a water content suitable for fermentation and then subjected to fermentation. The applicant of the present application has previously proposed a new apparatus and method that enable these processes to be performed in the same apparatus (Japanese Patent Application No. 9-27).
6824). In this device, the material is accommodated in a cylinder having a scraping plate on the inner surface, and a rotation axis passing through the cylinder is arranged along the axis of the cylinder, and a stirring blade is provided on the axis to form a cylinder. A fermentation process is performed by moving the material in the axial direction while stirring the material by combining the rotation of the body and the rotation of the stirring blade. Furthermore, the cylinder is divided into a plurality of partition chambers in the axial direction, and each chamber is sequentially processed while controlling the fermentation environment.

In the above apparatus, for example, the case where the cylinder is divided into three partition chambers will be described. In the first chamber, a material input chute is provided on the fixed side wall of the cylinder at one end side, and the first chamber and the first chamber are separated from each other. A partition plate having a notched structure is provided between the second chamber and between the second chamber and the third chamber so that the material can overflow. Further, at the bottom position of the contained material, a heating ventilation pipe is arranged in the first chamber, and a sprinkler pipe is arranged in the upper space of the second and third chambers. Further, stirring blades that stir the materials in the respective chambers are provided at the rotation axis center that penetrates the respective chambers.

The raw material is introduced into the first chamber through the introduction chute and added to the already introduced material being dried. In the first chamber, room temperature air or hot air (about 200 ° C.) is ventilated from the heating vent pipe, and the mixture is agitated and mixed by the rotating cylinder and the agitating shaft for about 1 day, and dried to a water content of about 40%. Then, the increased amount of this material overflows the partition plate, moves to the second chamber, and is mixed and added to the material being fermented in the second chamber. As in the first chamber, the second chamber is agitated and mixed (completely mixed) by the cylindrical body and the agitation shaft, and the amount of water is adjusted by sprinkling water if necessary according to the state of the organic matter, and the aeration operation from the ventilation pipe is performed. A fermentation process for 7 days is performed. Then, this material moves to the third chamber by the increase of the material overflowing the partition plate,
Similar to the chamber, it is transferred and stirred by a cylindrical body and a stirring shaft, and a fermentation process is carried out for about 10 days by adjusting the water content by sprinkling water as necessary according to the state of the organic matter and aeration operation, and then extracted from the discharge chute. That is, in the above apparatus, the fermentation process is efficiently performed by simulating the zones as a plurality of zones in the cylinder, first proceeding to dry the organic matter in the fermentation apparatus, and then performing environmental control according to the change in the state of the organic matter. It is designed to be done.

[0005]

However, according to the subsequent studies by the inventors, it was found that the above-mentioned apparatus has the following problems in fermentation of animal protein heated. That is, animal protein heated by cooking etc. has low water activity, and in the normal continuous three-step fermentation system, the first tank, which controls the fermentation mainly for drying, is less susceptible to decomposition by microorganisms, and the composting reaction starts up. Absent. Therefore, the composting reaction cannot be continued in a few tanks, and the fermentation processing efficiency of the entire apparatus is not good.

The present invention has been made in view of the above circumstances, and provides a fermentation treatment method and a fermentation treatment apparatus capable of efficiently fermenting a low water activity animal protein or an organic substance containing the same. The purpose is to do.

[0007]

In order to solve the above-mentioned problems, in the fermentation treatment method of a low water activity organic matter of the present invention, the invention of claim 1 is a rotary cylinder for accommodating and fermenting an organic matter, Organic matter is sequentially disposed in the inner space of the rotary cylinder of the fermentation treatment apparatus having a stirring blade that is located inside the rotary cylinder and rotates by a rotation axis along the axial direction of the cylinder to stir the organic matter. The material is divided into a plurality of treatment zones that can be moved, and rotation control, aeration rate control, and water sprinkling control are performed for each treatment zone, and each treatment zone is subjected to solubilization process, drying process, and fermentation process of organic matter as a fermentation process. It is characterized by performing processing.

According to a second aspect of the present invention, there is provided the method for fermenting a low water activity organic matter according to the first aspect of the invention, wherein the rotation control, the aeration rate control, and the sprinkling are performed based on the information on the set water content determined for each treatment zone. It is characterized by performing control.

The method for fermenting a low water activity organic matter according to claim 3 is the method according to claim 1 or 2, wherein
The organic matter is solubilized in the treatment zone of the former solubilization process, the solubilized organic matter is moved to the treatment zone of the drying process, and the rotary cylinder and the rotation axis are continuously rotated in the treatment zone of the drying process. To accelerate the drying of the organic matter, move the dried organic matter to the processing zone of the fermentation process, and rotate the rotating cylinder and the rotation axis intermittently in the processing zone of the fermentation process to rotate the organic matter as necessary. It is characterized in that the organic matter is efficiently fermented by adjusting the contact between air and the air.

Further, the low water activity organic waste treatment device according to the present invention is characterized in that: a rotary cylinder for accommodating and fermenting an organic matter; and a rotary shaft located in the rotary cylinder and extending in the axial direction of the cylinder. A plurality of a solubilization process, a drying process, and a fermentation process in which an organic material is rotated by an axial center and has a stirring blade that stirs the organic matter, and the inner space of the rotating cylinder is axially sequentially movable In addition to being divided in the processing zone of
The rotation axis is divided in the axial direction so as to be rotationally driven in accordance with a part or all of the processing zone,
Further, for some or all of the treatment zones, having a watering means and an aeration means, based on the set water content information for each treatment zone adapted to the solubilization process, drying process and fermentation process,
The present invention is characterized by having control means for controlling rotation, controlling the amount of ventilation of the ventilation means, and controlling the watering of the watering means for each or all of the processing zones.

According to a fifth aspect of the present invention, there is provided an apparatus for treating organic waste having low water activity, wherein the treatment zone corresponding to the solubilization process and the treatment zone corresponding to the fermentation process are different from each other. It is characterized in that it has a sprinkling means and a ventilation means which can be controlled independently for each zone, and has a ventilation means which can be controlled independently for another zone in a treatment zone corresponding to a drying process.

According to a sixth aspect of the present invention, there is provided the apparatus for treating low-water-activity organic waste according to the fourth or fifth aspect of the present invention, wherein the rotary cylinder and the rotary shaft center correspond to the treatment zone corresponding to the fermentation process. It is characterized by having an intermittent operation means or a control function that makes intermittent rotation possible.

The apparatus for treating organic waste having low water activity according to claim 7 is the treatment zone according to the invention according to any one of claims 4 to 6, wherein the treatment zone is a solubilization chamber in the first stage and a drying chamber in the middle stage, It has a second-stage fermentation chamber, and is characterized in that the spaces between the chambers are partitioned by partition walls that allow the organic material to overflow and move.

That is, according to the method for fermenting a low water activity organic substance of the present invention as set forth in claim 1, rotation control and aeration suitable for the solubilization process, the drying process and the fermentation process are performed according to the divided treatment zones. Since the organic matter is treated while controlling the amount and watering, even in the case of organic waste containing animal proteins with low water activity, the water activity is increased by the solubilization treatment, and then the drying and fermentation treatments are performed. It is done and the fermentation proceeds efficiently. The rotation control, the air flow rate control, and the water sprinkling control according to the treatment zone are preferably performed based on the information of the set water content determined for each treatment zone as described in claim 2. For example, as the rotation control according to the treatment zone, as described in claim 3, in the treatment zone of the drying step, the rotary cylinder and the rotation axis are continuously rotated to promote the drying of the organic matter, and the fermentation process. In the processing zone, the rotary cylinder and the rotation axis are intermittently rotated as necessary to adjust the contact between the organic matter and the air to efficiently ferment the organic matter. By performing rotation control or the like according to the treatment zone in this manner, each process such as the solubilization process, the drying process, the fermentation process, etc. can be performed reliably and efficiently.

Further, according to the fermentation treatment apparatus for low water activity organic matter of the present invention, the rotary cylinder is divided into solubilization process, drying process and fermentation process treatment zones, and rotation control is performed for each treatment zone. Since the ventilation amount control and the water sprinkling control can be performed, it is possible to reliably and easily carry out the above processing method. For example, when the rotating cylinder has a solubilization chamber, a drying chamber, and a fermentation chamber, water for sprinkling is supplied as needed in the solubilization chamber so that the material has the lowest water content that can be solubilized. Adjusted to. Further, in order to promote the solubilized state, the organic matter is continuously mixed and stirred by the action of the rotary shaft having a rotary cylinder and a blade such as a paddle and a skid type and rotating in the opposite direction to the cylinder, The contact between the material and the heated air and the volatilization of the generated vapor are promoted to efficiently solubilize the organic matter.

Next, in the drying chamber, the solubilized material overflowing from the solubilizing chamber flows in and is accommodated, and heated air is fed in for drying, and at the same time, the rotary cylinder and the blades of the ribbon, paddle, skid type, etc. The organic substance is continuously mixed and agitated by the function of the rotating shaft that rotates in the opposite direction to the tubular body, and the contact between the material and the heated air and the volatilization of the generated vapor are promoted, and the organic substance is efficiently Is dried. In the drying room, it is also possible to return a part of the material that has undergone the fermentation process and mix it with a new material to promote the decrease in water content.

Next, in the fermentation chamber, the dried material overflowing from the drying chamber flows in and is accommodated, and it has a cylindrical body which rotates independently of the drying chamber and a stirring blade such as a ribbon or paddle type, which is the reverse of the cylindrical body. By the function of the rotating shaft which rotates in the direction, it is mixed and homogenized with the already stored fermented material. Further, in the fermentation chamber, air is forcibly fed in by an appropriate aeration means, water is sprinkled from the water sprinkling means as necessary to adjust the environment suitable for the fermentation room, and the organic matter is satisfactorily fermented. In this operation,
By intermittently rotating the cylinder and the rotation axis,
An organic material is prevented from coming into contact with air excessively and volatilization of water is increased, thereby preventing an appropriate fermentation decomposition temperature from being maintained and ensuring a good fermentation state. The organic matter is efficiently fermented by this series of treatments.

The apparatus of the present invention has a rotating tubular body which serves as a fermenter, and the tubular body having an appropriate shape such as a circular cross section, an elliptical cross section, or a polygonal shape can be used. it can. The cylinder is rotated by an appropriate drive device, and the drive device is based on the type and amount of the organic matter contained in the cylinder, the rotation speed, the operating state (continuous, intermittent operation, etc.).
It is desirable to be able to control the above. Further, the rotating cylinder is
It is desirable to fit one cylinder into the processing zone and divide it into two, for example, between the drying chamber and the fermentation chamber. It is assumed that the divided rotating cylinders can be individually controlled in rotation by the control means. This control can be performed by providing a drive device for each divided rotary cylinder or providing a different driving force transmission device for each divided rotary cylinder. The rotation control can be performed by controlling the number of rotations, the rotation timing, and the like. It should be noted that the division of the rotary cylinder is not necessarily required to be performed for each processing zone, and may be divided so as to include a plurality of processing zones.

Further, a rotary shaft center is arranged along the axial direction of the rotary cylinder body in the rotary cylinder body according to the present invention, and a stirring blade rotated by this rotary shaft center is provided. In some cases, the rotation axis may be divided according to part or all of the processing zones, and the rotation may be controlled separately for each divided portion. The rotation control can be performed by the control means similarly to the above-mentioned rotary cylinder, and by providing a drive device for each divided rotation axis or providing a different driving force transmission device for each divided rotation axis. It can be carried out. The rotation control can be performed by controlling the number of rotations, the rotation timing, and the like. Further, the stirring blade provided on the rotating shaft, the type of raw material, depending on the characteristics and characteristics changes in the fermentation process,
Cutter type, ski type, paddle type, ribbon type, screw type, etc. can be applied individually or in combination,
In order to save the power of stirring the material by the stirring blade, it is possible to select and set an appropriate combination including local attachment, omission, and diameter. When the fermenter is divided into a plurality of treatment zones, these changes can be partially performed corresponding to each zone.

It is desirable to provide a scraping plate on the inner surface of the rotary cylinder in order to efficiently stir the organic substance to be treated. Thereby, the organic material can be stirred from the inner and outer circumferences in cooperation with a stirring blade described later. The shape and number of the scraping plates are not particularly limited, and can be appropriately changed according to the type of material to be processed. Further, the shape and arrangement position of the scraping plate can be changed depending on the axial position of the fermenter so as to correspond to the treatment zone described later.

The rotary cylinder is divided into a plurality of processing zones in the axial direction, and in each processing zone, ventilation, moisture adjustment and temperature adjustment can be individually performed as needed. Different treatment zones can be selected in consideration of properties of organic matter and progress of fermentation. The position of this division and the number of divisions can be determined in consideration of the type of organic matter and the degree of progress of fermentation thereof. The fermentation environment in each treatment zone includes the temperature of the fermented material, the water content, the amount of carbon dioxide in the atmosphere, the stirring condition, and the like. The above control controls one or more of these elements. The control method of the method of the present invention is not particularly limited, but it can be performed by intake, drainage, water sprinkling, intake or sprinkling, heating of the intake, change of stirring blades, and the like. These may be controlled for each processing zone, but in the present invention, in some cases, it is possible to provide a control means common to a plurality of processing zones.

This method of dividing the rotary cylinder into a plurality of processing zones is particularly effective in the apparatus and method for actively performing the drying in the rotary cylinder, which is the subject of the present invention. As a treatment zone in this case, a solubilization zone in the first step, a drying zone in the second step, and a fermentation zone in the third step can be representatively mentioned. You can also list them. Each processing zone may virtually divide the inside of the rotary cylinder,
In order to properly control the environment of each zone, it is desirable to provide a partition between the processing zones to make each processing zone a partition chamber. It is desirable that the partition section be composed of a partition wall that allows the organic material material to overflow and move in order to smoothly move the organic material material between the partition chambers. In addition to this, the movement of the organic material can be adjusted by opening / closing the opening provided in the partition or adjusting the opening amount.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. The rotary cylinder 1 having a circular cross section is provided with a large number of scraping plates 2a, 2b, 2c, 2d extending in the axial direction and arranged at regular intervals in the circumferential direction on the inner peripheral surface thereof. Further, the rotary cylinder 1 is connected to the drive device 3 and its rotation can be controlled. Further, the drive device 3 has a control circuit (control means;
(Not shown) is incorporated as an intermittent operation means.

On the opening side of both ends of the cylindrical body 1, non-rotating fixed side walls 7a and 7b for blocking the opening are arranged, and these side walls are fixed to the installation surface. It should be noted that ring-shaped seals 8a and 8b are arranged so as to be rotatable with respect to the cylindrical body 1, respectively. The fixed side wall 7
A charging chute 62 for storing the fermentation raw material in the fermenter is connected to a and 7b. On the other hand, the side wall 7 on the outlet side
A discharge section 11 is provided at b, and the lower end of the discharge section 11 is connected to the product storage 63.

Further, a fermenter partition wall 21a for partitioning the rotary cylinder 1 in the axial direction is provided at the center of the rotary cylinder 1 in the axial direction.
21b, 21c are provided, and the partition walls 21a, 2
1b and 21c are located on the lower side of the rotary cylinder 1 and are located on the side wall 7
It is fixed by a tie rod 22 which is installed and fixed between a and 7b. The partition wall 21a divides the solubilization chamber A and the drying chamber B, the partition wall 21b divides it into the drying chamber B and the pre-stage fermentation chamber C1, and the partition wall 21c divides it into the pre-stage fermentation chamber C1 and the post-stage fermentation chamber C22. The partition wall 21
a is an organic matter from the solubilization chamber A to the drying chamber B, 21b is from the drying chamber B to the pre-stage fermentation chamber C1, and 21c is the pre-stage fermentation chamber C1.
To the downstream fermentation chamber C2 so that the upper end does not close the rotary cylinder 1 so as to be overflowed into the latter fermentation chamber C2, and the upper end position assumes the amount of organic matter stored in the rotary cylinder 1. It is set.

Further, in the rotary cylinder 1, a shaft body 23 constituting a rotary shaft center is arranged along the axis center of the rotary cylinder body 1, and the shaft body 23 is supported between the partition wall and the bearings 24a and 24b.
, And one end of which extends outwardly of the side wall 7a and is connected to the drive unit 6 so that its rotation is controlled. Further, the drive device 6 has a control circuit (control means; not shown) that enables intermittent rotation of the cylinder 1 incorporated therein as an intermittent operation means.

A stirring blade is attached to the shaft 23, a paddle type stirring blade 31 is attached to a portion in the solubilizing chamber A, and a ribbon type stirring blade 3 is provided in the drying chamber B.
2, a stirring blade 33 combining a ribbon type and a paddle type is installed in the pre-stage fermentation chamber C1, and a paddle type stirring blade 34 is installed in the post-stage fermentation chamber C1, respectively.

Further, a heating vent pipe 40 is arranged below the rotary cylinder 1, and the rotary pipe 1 is attached to the vent pipe 40.
Is connected to an air heater 41 installed outside the device, and the air heater 41 is connected to a flow meter 42 and a blower 43. Further, a ventilation pipe 44a for the solubilization chamber A, a ventilation pipe 44b for the pre-stage fermentation chamber C1, and a passage pipe for the post-stage fermentation chamber C2 are provided at the lower part of the rotary cylinder 1 so as to be located at a lower position of the organic matter material. A trachea 44c is installed, and these ventilation pipes 44a, 44b, 44c penetrate the side wall 7b outwardly, and flow meters 45a, 45b, 45c and a valve 46 are provided.
It is connected to a common blower 47 via a, 46b, and 46c. The ventilation pipes 44a to 44c and the flow meter 45a
-45c, valves 46a-46c, and blower 47 constitute a ventilation means. Further, the heating ventilation pipe 40, the solubilization chamber A ventilation pipe 44a, the pre-fermentation chamber C1 ventilation pipe 4
4b, thermocouples 48a, 48b, 48c, 48d are installed in the ventilation pipe 44c for the second-stage fermentation chamber C2,
Cables are installed outward from the side walls 7b along the ventilation pipes to transmit temperature signals to control means (not shown).

Further, the water content meters 52a, 52b, 52c,
52d is a scraping plate 2 on the solubilizing chamber A, the drying chamber B, the pre-stage fermentation chamber C1, and the post-stage fermentation chamber C2 of the rotary cylinder 1.
a. ． It is installed so that it does not interfere with 2d and does not hinder the rotation of the stirring blade attached to the shaft body 23. These signals are transmitted to the control means via the non-contact type power supply and signal transmission / reception device 70. Further, in the upper space of the rotary cylinder 1, a sprinkler pipe 51a for the solubilization chamber A, a sprinkler pipe 51b for the front-stage fermentation chamber C1, and a sprinkler pipe 51c for the rear-stage fermentation chamber C2 are arranged. Is the side wall 7a,
The water sprinkling pipes 51b and 51c penetrate the side wall 7b outward respectively, and are connected to a common water sprinkling pump 55 through flowmeters 53a, 53b and 53c and valves 54a, 54b and 54c, respectively. The sprinkling pipes 51a to 551
c, flow meters 53a-553c, valves 554a-554
c, the watering pump 555 constitutes a watering means.

Further, outside the rotary cylinder 1, a raw material storage tank 60 for temporarily storing a raw material organic material, and the organic material supplied from the raw material storage tank 60 are crushed into a size suitable for processing. The crusher 61 is provided, and the raw material is supplied from the crusher 61 to the charging chute 62. Further, as described above, the product storage tank 63 for storing the fermentation material discharged from the discharge section 11 is installed near the discharge section side 11, and the material is returned to the discharge side of the product product storage tank 63. A return conveyer 12 for the above is installed, and one of them is connected to the input port 13 of the drying chamber B. Further, the product storage tank 63 is connected to the granulator 64, and is connected to the bag filling 65 and the sealer 66. On the other hand, an exhaust pipe 67 is connected to the rotary cylinder 1, and the other end of the exhaust pipe 67 is passed through a blower 68 to a catalytic combustion oxidation type deodorizer 6
9 is connected.

The fermentation treatment method using the above apparatus will be described below. The organic matter material to be subjected to the fermentation treatment (in this embodiment, a heated animal protein raw material such as shiimai) is supplied from the raw material storage tank 60 and is supplied to the crusher 61 to be crushed. The crushed raw material is introduced into the solubilizing chamber A (first chamber) through the input port 62. Here, the scraping plate 2a is provided on the inner surface, the cylindrical body 1 that continuously rotates in the range of 0.05 to 1 rpm and the ribbon-type stirring blade 31 are provided, and
The solubilization chamber A has been already stirred by the stirring operation by the shaft 23 that continuously rotates in the opposite direction to the cylinder 1 in the range of 1 rpm.
It is homogenized by mixing it with the material that is being processed. At this time, air is dispersed and supplied to the material through a blower 47 and a ventilation pipe 44a having a pore size of several millimeters.

In the solubilizing chamber A, the organic material is stored for 3 days while being mixed and stirred while adjusting the water content of the organic material to be 58 to 60%. In the adjustment of the water content, tap water or sewage of the facility is supplied to the material from the water sprinkling pipe 51a to the material via the water sprinkling pump 55, the valve 54a, and the flow meter 53a, if necessary. In the solubilization chamber A, the raw material is usually fed continuously for several hours a day, but after the solubilization treatment, the increased amount of the raw material overflows through the partition wall 21a and is sent to the drying chamber B.

As for the material overflowing the partition wall 21a as described above, the material from the solubilizing chamber A enters into the drying chamber B. Here, it has a scraping plate 2b on its inner surface and is similarly stirred by the rotary cylinder 1 rotating in the range of 0.05 to 1 rpm and the ribbon type stirring blade 32 rotating in the opposite direction to the rotary cylinder 1 and already dried. The material stored in the chamber B and the material returned from the return conveyor 12 are mixed and processed. At this time, the heated air is dispersed and supplied to the material through the blower 43, the air dryer 41, and the heating ventilation pipe 40 having a pore size of several millimeters. This material is contacted with air at about 200 ° C. and dried so that the water content is about 55% or less in about 3 days. After the drying treatment, the amount of the material added by the input raw material overflows through the partition wall 21b and moves to the fermentation chamber C1. Further, the gas containing steam rises to the upper space of the drying chamber B, is sucked by the exhaust pipe 67, and is collected in the facility.

The fermentation chamber is divided into a front stage and a rear stage by the partition plate 21c as described above, but the material from the drying chamber B first enters the front stage fermentation chamber C1. Here, a scraping plate 2c is provided on the inner surface, and a rotating cylinder 1 that rotates intermittently for about several minutes in the range of 0.05 to 1 rpm for several minutes and a stirring blade 33 that combines a ribbon type and a paddle type are provided. And then 0.05
By the stirring operation by the shaft 23 that rotates in the direction opposite to the cylinder 1 in the range of up to 1 rpm and intermittently along with the cylinder 1, the material that is already fermented is mixed and homogenized. At this time, air is dispersed and supplied into the material through a blower 47, a valve 46b, and a flow meter 45b through a ventilation pipe 44b having a pore size of several millimeters, and the material is agitated while being in contact with the air for about 6 days. It is processed by aerobic fermentation decomposition. At this time, the air flow rate is adjusted to the range of 0.05 to 0.5 m ³ / min, and the tap water or the facility sewage is passed through the watering pump 55 so as to keep the water content of the material at 50 to 55%. Valve 54b,
Water is supplied to the material from the water sprinkling pipe 51b through the flow meter 53b and sprinkled. By this treatment, the temperature of the material can be kept at 60 ° C. or higher. About 32% of the organic content of the input material is decomposed.

Next, this material overflows the partition plate 21c and enters the fermentation chamber C1 of the third chamber, where it has a scraping plate 2d on the inner surface and is mixed and transferred by a stirring operation by a paddle type stirring blade 34. At this time, the material comes into contact with the air which is distributed and supplied through the blower 47, the valve 46c, the flow meter 45c, and the ventilation pipe 44c having a pore size of several millimeters, and about 1
The fermentation material is aerobically fermented for one day, and about 8% of the input raw material is decomposed, and about 40% of the organic content in the input raw material is decomposed and becomes a stabilized material in the entirety including the latter fermentation chamber C2. This material is taken out from the chute 11 on the side wall 7b of the fermentation chamber. At this time, the ventilation amount is adjusted to be in the range of 0.01 to 0.2 m ³ / min, and the water supply or the facility sewage is sprayed by a pump 55 so that the water content of the material is maintained at 45 to 50%.
Through the flowmeter 54c and valve 53c.
Water is supplied from 1c and adjusted. The material in which fermentation has proceeded in the fermentation chamber C2 in this way is temporarily stored in the product storage tank 63 after being discharged from the discharge unit 11, and is charged into the drying chamber B of the rotary cylinder 1 via the conveyor 12 as necessary. To be done. Alternatively, it is put into the granulator 64 and granulated. The granulated material is bag-packed through a bag-filling 65 and a sealer 66 to form a product compost. The pattern of solubilization, drying and fermentation data over time in this embodiment is shown in FIG. As can be seen from this figure, it is shown that the organic material containing animal protein is also effectively treated.

[0036]

As described above, according to the present invention,
Fermentation treatment of organic matter having a rotating cylinder for accommodating and fermenting organic matter and a stirring blade located in the rotating cylinder and rotated by a rotation axis along the axial direction of the cylinder to stir the organic matter In the apparatus, the inner space of the rotary cylinder is divided into a plurality of treatment zones in which organic matter is sequentially movable in the axial direction and undergoes a solubilization process, a drying process, and a fermentation process, and appropriate agitation in each treatment zone. Since the materials can be processed by the mixing operation, high-speed and advanced fermentation decomposition processing becomes possible. Then, the heat-treated animal protein raw material, which could not be composted by the conventional composting apparatus, can also be composted. Furthermore, for these treatments, if a solubilization chamber, a drying chamber, and a fermentation chamber are provided as treatment zones in the composting device, and if operation can be controlled independently in accordance with these, the solubilization chamber can be solubilized in the same device. Since drying, fermentation and fermentation can be performed at high speed and efficiently, it is possible to achieve compactness.

[Brief description of drawings]

FIG. 1 is a front sectional view of a fermentation treatment apparatus according to the present invention.

FIG. 2 is a schematic view of a fermentation treatment system incorporating the same treatment device.

FIG. 3 is a graph showing a drying / fermentation treatment pattern in the same embodiment.

[Explanation of symbols]

1 rotating cylinder tank 2a scraping board 2b scraping board 2c scraping board 2d scraping board 3 drive 6 drive 7a Fixed side wall 7b Fixed side wall 8a Ring-shaped seal 8b ring-shaped seal 9 throwing chute 11 discharge chute 12 Return conveyor 21a partition wall 21b Partition wall 21c partition wall 22 Tie rod 23 Shaft 24a bearing 24b bearing 31 Stirring blade for solubilization chamber 32 Drying room blades 33 Feather for the first-stage fermentation chamber 34 Feather for the second-stage fermentation chamber 40 heating vent pipe 41 Air heater 42 Flowmeter 43 Blower 44a ventilation pipe 44b ventilation pipe 44c ventilation pipe 45a flow meter 45b flow meter 45c flow meter 46a valve 46b valve 46c valve 47 Blower 48a thermocouple 48b thermocouple 48c thermocouple 48d thermocouple 51a Sprinkler pipe 51b water sprinkler 51c water sprinkler 52a Water content meter 52b Water content meter 52c Water content meter 52d moisture content meter 53a Flow meter 53b Flowmeter 53c flow meter 54a valve 54b valve 54c valve 60 raw material storage tank 61 crusher 62 slot 63 product storage tank 65 bagging machine 66 sealer 67 Exhaust pipe 70 Power supply and signal transmitter / receiver

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) C05F 3/00 C05F 7/00 5/00 9/00 7/00 17/00 9/00 17/02 17 / 00 B09B 3/00 ZABD 17/02 A (72) Inventor Yuji Komatsu 1-6-1 Funakoshi Minami, Aki-ku, Hiroshima City, Hiroshima Prefecture Japan Steel Works F-term (reference) 4D004 AA02 AA03 AA04 AB01 AC05 BA04 CA15 CA19 CA42 CB04 CB28 CB36 CB41 DA02 DA13 DA20 4D059 AA01 AA03 AA07 AA08 BA02 BA03 BD01 BD21 BD33 BJ01 BJ04 CC01 EB01 EB15 4G078 AA10 AA21 AA22 AB20 BA01 DA43 DA01 EA03 4H061 CC1649 CC43 CC01

Claims (7)

[Claims] 1. A rotating cylinder for accommodating and fermenting an organic matter, and a stirring blade which is located in the rotating cylinder and rotated by a rotation axis along the axial direction of the cylinder to agitate the organic matter. The inner space of the rotary cylinder of the fermentation treatment apparatus is divided into a plurality of treatment zones in which the organic material can be moved sequentially in the axial direction, and the treatment is performed by performing rotation control, aeration rate control, and water sprinkling control for each treatment zone. Solubilization process in each zone,
A method for fermenting an organic substance having a low water activity, which comprises fermenting an organic substance as a drying process and a fermentation process. 2. The method for fermenting a low water activity organic matter according to claim 1, wherein the rotation control, the air flow rate control, and the water sprinkling control are performed based on information on a set water content determined for each treatment zone. . 3. The organic matter is solubilized in the treatment zone of the former solubilization step, the solubilized organic matter is moved to the treatment zone of the drying step, and the rotary cylinder and the rotation axis are moved in the treatment zone of the drying step. Is continuously rotated to promote the drying of the organic matter, the dried organic matter is moved to the treatment zone of the fermentation process, and the rotary cylinder and the rotation axis are intermittently provided in the treatment zone of the fermentation process as needed. The method for fermenting a low water activity organic matter according to claim 1 or 2, wherein the organic matter is efficiently fermented by rotating to adjust contact between the organic matter and air. 4. A rotating cylinder for accommodating and fermenting an organic substance, and a stirring blade for rotating the organic substance in the rotating cylinder along an axial direction of the cylinder and stirring the organic substance. Then, the inner space of the rotary cylinder is divided into a plurality of treatment zones in which the organic material is sequentially movable in the axial direction, such as a solubilization process, a drying process, and a fermentation process, and the rotation axis is in the axial direction. It is divided so that it can be rotationally driven according to some or all of the treatment zones, and further has a sprinkling means and an aeration means for each of some or all of the treatment zones, and has a solubilization process, a drying process and a fermentation process. Based on the set water content information for each treatment zone adapted to the above, it has a control means for performing rotation control, ventilation rate control of the ventilation means, and sprinkling control of the sprinkling means for each or all of the treatment zones. Low water Equipment for the separation of organic waste. 5. A treatment zone corresponding to the drying step, which has a sprinkling means and an aeration means independently controllable to the other zones in the treatment zone corresponding to the solubilization process and the treatment zone corresponding to the fermentation process, respectively. 5. A zone having ventilation means independently controllable with respect to other zones.
The low water activity organic waste treatment device described. 6. An intermittent operation means or a control function for enabling intermittent operation of rotation of a rotary cylinder and a rotation axis corresponding to a processing zone corresponding to the fermentation process, according to claim 4 or 5. The low water activity organic waste treatment device described. 7. The treatment zone has a solubilization chamber in the front stage, a drying chamber in the middle stage, and a fermentation chamber in the rear stage, and between the chambers,
7. The low water activity organic waste treatment device according to claim 4, wherein the organic matter material is partitioned by a partition wall that overflows and is movable.