JPH09278570A - Fermentation processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fermentation processing apparatus which enables uniform fermentation without agitation and flow turning and enables the processing of the fermentation product with a reduced amount of water. SOLUTION: This fermentation processing apparatus comprises a frame stand 21, a storage housing 20 which is set on the frame stand 21 and is opened only at its one side wall, a bottom plate 6 which is arranged on the frame 21 and beneath the storage housing 20, divided into a plurality of sheets and equipped with a plurality of air-feeding pipes having a plurality of outputs embedded in and is made horizontally movable, the wall face 19 which is made horizontally movable to close the opened side wall of the housing 20, and a moving means 8 which moves the bottom plate 6 and the wall face 19 horizontally. An auxiliary plate 22 is attached to the wall face 19 corresponding to the storage side face, a sucking pipe 11 having a plurality of sucking inlets 12 is set inside the storage housing to communicate the sucking tube 11 through a blower 9 to the air-feeding tube.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fermentation treatment apparatus for fermenting an organic waste to reduce its weight, compost it, and feed it.

[0002]

2. Description of the Related Art Conventionally, as a fermentation treatment apparatus for fermenting organic waste in the process of inputting organic waste from the input side and transferring the input organic waste to the output side, a slope is used. Fermentation while moving organic waste by using it, fermenting in the process of moving the floor by conveyor method to transfer organic waste, kiln-screw method, transferring organic waste by turning back What was fermented during the process was used.

In addition to this, a fermentation treatment apparatus for putting organic waste into a fermenter to treat it in a batch system, and an apparatus for fermenting while rotating the fermenter have been conventionally used.

In any of the above methods, the fermentation is
Air is supplied to the organic waste, the organic waste is biodegraded in an aerobic environment, and the heat of decomposition raises the temperature of the organic waste to promote biodegradation more actively.
It is intended to kill and detoxify various bacteria in organic waste. After the fermentation progresses and the temperature of the organic waste reaches a certain temperature or higher, the evaporated moisture is taken out by passing air through the accumulated organic waste, and the fermentation product stabilizes the organic matter and It can be reused as a soil-remediating agent as a material with reduced water content and easy to handle.

[0005]

However, in these conventional fermentation treatment apparatuses, the unfermented portion remains in the organic waste in the fermenter and the quality of the fermentation product is not stable. This is because the air supplied to the organic waste plays a role in removing water from the organic waste and taking it out of the system in the process of passing through the sedimentary layer of the organic waste in addition to supplying oxygen. Since the upper surface of the organic waste comes into contact with the air having a relatively low temperature, the air containing water condenses on the upper part of the organic waste to cause partial excess of water and the fermentation does not proceed sufficiently. It is due to. As a matter of course,
In such a case, a fermented product having a high water content is produced, resulting in poor handleability.

Another problem is that when the amount of air supplied is small, the temperature rise in the early stage of fermentation occurs but the amount of evaporated water taken out is small and the water content of the fermentation product does not decrease.
Fermentation does not proceed sufficiently, or conversely, when the air supply is large, there is a problem that the fermentation material is cooled by the air supply and the temperature does not rise and the fermentation does not proceed in a period when the outside temperature is low. It was

In the present invention, in view of the above problems, a fermentation product having a stable quality, that is, a fermentation product in which fermentation uniformly progresses throughout the fermenter and the water content is reduced to an appropriate level as a recycled product The purpose is to provide a device.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a gantry, a storage portion installed on the top surface of the pedestal and having only one side wall opened, and a plurality of divided portions on the top surface of the pedestal and below the storage portion. A horizontally movable bottom plate in which an air supply pipe having an air supply port is embedded, a horizontally movable wall surface that closes the open side surface of the storage section, and a moving means that horizontally moves the bottom plate and the wall surface. An auxiliary plate corresponding to the side surface of the storage portion is provided on the wall surface, a suction pipe having a plurality of suction ports is installed inside the storage portion, and the suction pipe is connected to an air supply pipe through a blower. Is characterized by.

[0009] The above-mentioned constitution is made as a result of various studies on the fermentation process of the organic waste in the fermenter, and as a result, when the organic waste is agitated and cut back, the temperature rise of the organic waste due to fermentation is hindered. It is difficult to reach the desired fermentation temperature, and it has been found that this is a cause of adversely affecting the stabilization of the quality of the fermentation product.

In other words, the constitution of the present invention is to ferment the organic waste without stirring and turning back in the fermentation process.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described with reference to FIG. 1. A plurality of bottom plates 6 and wall surfaces 19 which are driven by a moving device 8 and connected to each other through hydraulic cylinders 18 are simultaneously pulled out to the insertion port 2 side. The space 16 surrounded by the wall surface 19, the bottom plate 6 and the auxiliary plate 22 is filled with the organic waste 1 from the charging port 2 formed by drawing the bottom plate 6 and the wall surface 19. Then, when the organic waste 1 is filled in the space 16 just below the charging port 2 in the height direction, the moving device 8 is driven as shown in FIG. The wall surface 19 and the organic waste material 1 are extruded at the same time, and the organic waste 1 is stored in the fermentation tank 17. At this point, the organic waste 1 in the fermenter 17 is being pushed by the wall surface 19 and the bottom plate 6 on the input port 2 side while being fermented.
The organic waste 1 is present at the inlet of the fermenter 17 when the wall surface 19 and the bottom plate 6 are completely accommodated in the fermenter 17.

Next, in order to further add the organic waste 1, as shown in FIG. 3, the moving device 8 is driven to pull out the plurality of bottom plates 6 and the wall surface 19 from the fermentation tank 17 by the hydraulic cylinder 18. The input port 2 appears. At this point, the deposited layer of the organic waste 1 is in contact with the auxiliary plate 22 and the bottom plate 6 that are erected upright on both sides of the wall surface 19,
By pulling out the divided bottom plates 6 individually by the moving device 8 and pulling out the wall surface 19, the deposited layer of the organic waste 1 is separated from the auxiliary plate 22, the bottom plate 6, and the wall surface 19, and the charging port 2 There is a space below. Then, the organic waste 1 is charged into the space 16 below the charging port 2 to fill it, and this operation is sequentially repeated to continuously charge the organic waste 1. It is necessary to move the organic waste 1 on the bottom plate 6 in order to make the input port 2 appear, but it is not possible to move the organic waste simply by moving the bottom plate 6. . Therefore, the bottom plate 6 is divided into a plurality of parts, and the bottom plates 6 are moved separately, not simultaneously, so that the organic waste 1 is peeled from the bottom plate 6 and moved.

By performing the input and transfer of the organic waste 1 as described above, the reaction heat due to the decomposition of the organic waste 1 can be stored because the input waste is not stirred and cut back, and the temperature rise is promoted. The fermentation proceeds well.

After the fermenter 17 is full and the addition is completed, the blower 9 is operated to move the suction pipe 11 as shown in FIG.
The air in the fermenter 17 is sucked through a plurality of suction ports 12 provided in the suction pipe 11. The sucked air is partly or wholly discharged from the blower 9 and then distributed in two directions. One is the fermenter 17 with the inlet side air pipe 14.
It is supplied from the central part to the organic waste 1 or the fermentation product 10 at the beginning of fermentation on the side of the input port 2. The other is supplied from the central part of the fermentation tank 17 to the organic waste 1 or the fermentation product 10 at the latter stage of fermentation on the side of the outlet 3 by the outlet side air pipe 15 (see FIG. 8). As for the distribution ratio in the two directions, it is preferable to supply more air in the latter half of the fermentation than in the first half of the fermentation. This is because in order to surely raise the temperature in the early stage of fermentation, it is necessary to suppress the air supply amount that causes a temperature decrease, and in the latter half of fermentation to reduce the water content, it is desirable to supply a larger amount of air than in the initial stage of fermentation. .

In the case of the present invention, since the suction pipe 11 directly sucks the hot and humid air from the inside of the sediment layer of the organic waste 1 or the fermentation product 10, the dew zone above the sediment layer is greatly reduced, The removal of water by insufflation is effectively performed. Further, by dividing the air supply pipe, it is possible to reliably advance the temperature rise in the initial stage of fermentation and reduce the water content of the fermentation product 10.

When the fermentation product 10 is taken out, the process shown in FIG.
As shown in FIG.
By pulling out the plurality of bottom plates 6 divided by 8 from the fermentation tank 17, the fermentation product 10 located immediately above the take-out port 3 is naturally dropped by its own weight and transferred by the take-out conveyor 5.

[0017]

Embodiments of the present invention will be described with reference to FIGS. As shown in FIG. 1, the fermentation treatment apparatus of the present invention comprises, as shown in FIG. 1, a fermentation tank 17 mainly composed of a pedestal 21 and a storage section 20, a plurality of horizontally movable bottom plates 6, and the bottom plate 6 as a separate body. Wall surface 19 provided with two auxiliary plates 22 facing each other
And a hydraulic cylinder 1 for moving the bottom plate 6 and the wall surface 19
A moving device (moving means) 8 provided with 8, a suction pipe 11 for sucking air in the fermenter 17, a suction pipe 11 and a blower 9
It is composed of an inlet side air supply pipe 14 and an outlet side air supply pipe 15 (see FIG. 7) which are communicated with each other through. Suction tube 11
As shown in FIGS. 6 and 7, the organic waste 1
When it is inserted into the fermenter 17, it is provided so as to be buried in the organic waste 1.

An opening is provided at one end of the gantry 21 to form an outlet 3 for the fermentation product 10, and an inlet 2 for the organic waste 1 is formed at the other end. The bottom plate 6 is a pedestal 2
1 is movable in the horizontal direction, in other words, in the longitudinal direction, and a wall surface 19 that closes the opening side surface provided on the storage portion 20 of the bottom plate 6 is provided separately from the bottom plate 6. Has been done. As shown in FIG. 7, two auxiliary plates 22 are joined to the wall surface 19 so as to prevent the organic waste 1 from spilling.

A moving device 8 for moving the hydraulic cylinder 18 is provided near the wall surface 19, and the moving device 8 and the wall surface 1 are provided.
9. The moving device 8 and the plurality of bottom plates 6 are connected by hydraulic cylinders 18, respectively, so that the wall surface 19 and the plurality of bottom plates 6 can be moved in the horizontal direction.

The suction pipe 11 is provided in the storage portion, and the position thereof is preferably a place where the organic waste 1 is buried. By providing it in a position where it is buried, the air to be sucked becomes hot and humid, and it is possible to effectively prevent dew condensation. The suction pipe 11 is connected to the inlet side air supply pipe 14 and the outlet side air supply pipe 15 via the blower 9 as described above, and the sucked air is mixed with the outside air in whole or in part. The air supply port 7 of the air supply pipes 14 and 15
More air is fed into the fermenter 17. The inlet-side air supply pipe 14 and the outlet-side air supply pipe 15 are attached to the upper surface of the bottom plate 6, and the surfaces in contact with the bottom plate 6 are open. The air discharged by the blower 6 is transferred by the inlet side air supply pipe 14 and the outlet side air supply pipe 15, and is supplied into the fermenter 17 through the plurality of air supply ports 7 provided in the bottom plate 6.

As an example, the dehydrated sludge of the septic tank sludge, which is the organic waste 1, is mixed with a water content adjusting agent, and the feeding conveyor 4 is used.
Was charged into the fermenter 17. Input amount is 1 fermenter
Volume of filling the inlet 2 side from the central part of 7, that is, fermenter 1
The volume is about half of the total volume of 7. The blower 9 was operated to supply air to the above-mentioned input material by the input port side air supply pipe 14. The temperature of the charged material increased to 60 to 70 degrees Celsius due to the heat of decomposition reaction of organic matter in sludge within 7 days from the day of charging. Then, the septic tank sludge was again charged into the fermentation tank 17 as in the previous case. In this operation, first, the plurality of bottom plates 6 are not moved at the same time but individually, so that the organic waste 1 and the fermentation product 10 attached to the bottom plate 6 are peeled off, and then the wall surface 19 is moved to move the charging port. The space portion 16 appeared at the bottom of 2. After the space 16 is filled by charging the space 16 with the charge,
The plurality of bottom plates 6 and the wall surface 19 were moved to the outlet 3 side at the same time to store the input material in the fermenter 17. By repeating the above operation, a new charge occupies the center of the fermenter 17 from the center to the input side, and an old charge occupies the center to the outlet side. Further, the blower 9 was operated, air was supplied to the new charge by the inlet side air supply pipe 14, and air was supplied to the old charge by the outlet side air supply pipe 15. At this time, the amount of air supplied to the inlet-side air supply pipe 14 is set small so as not to hinder the temperature rise of the input material, and the amount of air supplied to the outlet-side air supply pipe 15 is set to the inlet-side air supply in order to promote water evaporation. A larger amount of air was supplied than the amount of air sent from the trachea 14.

After the temperature of the initial charge dropped, the fermentation product 10 was taken out. In this operation, first, the take-out conveyor 5 was operated, the bottom plate 6 was moved to the moving device 8 side, and the take-out port 3 appeared. The fermentation product 10 located on the take-out port 3 falls on the take-out conveyor 5 and is conveyed. The result of measuring the water content of the fermentation product 10 is
What was 51% at the time of input was 42%. Moreover, the dew zone is extremely small, and the fermentation tank 17
Uniform fermentation proceeded throughout. On the other hand, when the same operation as described above is performed with the suction pipe 11, the inlet side air supply pipe 14 and the outlet side air supply pipe 15 stopped, the water content of 51% at the time of supply is reduced to only 46%. In addition, the dew zone was large and uniform fermentation could not be performed.

[0023]

INDUSTRIAL APPLICABILITY As described above, the present invention conveys the organic waste in the fermenter without stirring or turning it back. Therefore, the heat of decomposition of the organic waste is stored and stored at high temperature. Fermentation is stable. In addition, a suction pipe is provided at a position where it is buried by the organic waste put in the fermenter, and an air supply pipe for supplying air to the organic waste in the fermenter is connected to the inlet side from the central part of the fermenter. By dividing the fermentation tank from the center to the outlet side, the temperature of the fermentation can be surely raised at the beginning of fermentation and the evaporation of moisture from the fermentation product can be promoted. A fermentation product having excellent properties is obtained.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of a fermentation treatment apparatus according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view illustrating the movement of the bottom plate of the fermentation treatment apparatus according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view illustrating the relationship between the bottom plate of the fermentation treatment apparatus and the organic waste according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating the relationship between the organic waste and the takeout conveyor of the fermentation treatment apparatus according to the embodiment of the present invention.

FIG. 6 is a plan view of a bottom plate which is a main part of the present invention.

7 is a cross-sectional view taken along the line AA of the fermentation treatment apparatus shown in FIG.

FIG. 8 is a plan view showing a relationship between a bottom plate and an air supply pipe, which is an essential part of the present invention.

[Explanation of symbols]

1. Organic waste 2. Input port 3. Outlet 4.
Input conveyor 5. Take-out conveyor 6. Bottom plate 7.
Air outlet 8. Mobile device 9. Blower 10. Fermentation product 11. Suction tube 12. Suction port 13. Suction tube Fixed tube
14． Inlet side air pipe 15. Air outlet tube 1
6. Space section 17. Fermenter 18. Hydraulic cylinder 1
9. Wall surface 20. Storage section 21. Stand 22. Auxiliary plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) One inventor Takahashi 1250 Shimoeden, Shimodate-shi, Ibaraki Inside the Yuki factory of Hitachi Chemical Co., Ltd. (72) Kenichi Shibamoto 1250 Shimoedren, Shimodate, Ibaraki Hitachi Seikou Co., Ltd.Yuki Factory (72) Inventor Toshimitsu Ishida 2736 Sezaki-cho, Kurayoshi-shi, Tottori Prefecture Ishida Industry Co., Ltd. (72) Inventor Noritoshi Taniguchi 2736 Sezaki-cho, Kurayoshi-shi, Tottori Ishida Industry Co., Ltd.

Claims (2)

[Claims] 1. A gantry, an accommodating section which is installed on the gantry upper surface and has only one side wall opened, and a feeding unit which is divided into a plurality of sheets and has a plurality of air supply ports on the gantry upper surface and below the accommodating section. It comprises a horizontally movable bottom plate with a trachea buried therein, a horizontally movable wall surface that closes the open side surface of the storage section, and a moving means that horizontally moves the bottom plate and the wall surface. A fermentation treatment apparatus, characterized in that an auxiliary plate corresponding to the side surface of the unit is provided, a suction pipe having a plurality of suction ports is installed inside the storage unit, and the suction pipe is connected to an air supply pipe via a blower. 2. A plurality of air supply pipes embedded in the bottom plate, a part of which has an air supply port only in a half length with respect to the longitudinal direction of the bottom plate, and the other air supply pipes have a remaining half length. The fermentation treatment apparatus according to claim 1, wherein the fermentation treatment apparatus has an air supply port only at the end.