JP2002172377A - Apparatus for treating organic substance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waste treatment apparatus which reduces operation costs while a high deodorization capacity by the use of a deodorization device having an oxidation catalyst is maintained and can discharge exhaust gas directly without the restriction of an installation place. SOLUTION: Exhaust gas from a treatment tank 1 for treating organic substances is heated by passing through a heater 7 set in an exhaust gas passage 5 and deodorized by passing through the deodorization device 6 having the oxidation catalyst. By the exhaust gas which passed through the deodorization device 6, the exhaust gas before being passed through the heater 7 is heated, and the inside of the treatment tank 1 is also heated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic substance processing apparatus for decomposing organic substances such as kitchen waste by utilizing the activity of microorganisms, and more particularly to an organic substance processing apparatus for deodorizing exhaust gas generated by the decomposition using an oxidation catalyst. Related to the device.

[0002]

2. Description of the Related Art As a method for treating organic matter such as kitchen garbage (garbage) generated in kitchens of ordinary households and restaurants, there is a method utilizing decomposition by microorganisms. The organic matter treatment apparatus according to this method is configured such that an inlet is opened at an upper part of a treatment tank for storing a carrier (sawdust, wood chips, activated carbon, etc.) suitable for the inhabitation of microorganisms, and a stirrer is arranged inside. Then, the organic matter to be charged into the treatment tank through the charging port is left mixed with the carrier by the operation of the stirrer, and is decomposed by the activity of microorganisms living in the carrier.

[0003] The decomposition of organic matter inside the treatment tank is performed in exactly the same manner as the decomposition of organic matter that is routinely performed in nature, and the organic matter mixed in the carrier removes a small amount of composted residue. The remaining gas is decomposed into a gas containing carbon dioxide as a main component and water, and the generated gas and the generated water are discharged, whereby the amount of organic substances can be significantly reduced.

[0004] The activity of microorganisms inhabiting the carrier requires an appropriate amount of air (oxygen) and has conventionally been supplied to an air supply passage connected to an air supply opening opening in the upper space of the processing tank. By arranging an air fan and driving the air supply fan to introduce outside air into the processing tank, an appropriate amount of air is supplied.

Further, the inside of the treatment tank is heated by a heating means such as a heater attached to the bottom in order to enhance the activity of microorganisms living in the carrier and obtain a sufficient treatment capacity, so that a temperature suitable for the activity of microorganisms is obtained. The water generated by the decomposition of the organic matter evaporates sequentially and fills the upper space of the processing tank together with the generated gas. Therefore, the discharge of the generated gas and the generated water can be performed collectively by the operation of the exhaust fan arranged in the exhaust air path connected to the exhaust port opening to the upper space, and the supply air path is It is released to the outside air with the extra air supply introduced via it.

[0006]

In the organic material processing apparatus as described above, the exhaust gas from the processing tank contains an odor generated due to the decomposition of the organic matter in the processing tank, and this odor is discharged to the outside air as it is. In this case, the odor may drift around and cause deterioration of the surrounding environment. Therefore, conventionally, a deodorizer is arranged in the middle of the exhaust air path, and the exhaust from the processing tank is passed through the deodorizer, and is then released to the outside air after being deodorized.

For the deodorization of exhaust gas, an adsorption-type deodorant such as activated carbon is generally used. However, JP-A-6-292879 and JP-A-6-292880 (B09B 3/00) disclose: Pt-Al2 O3 can be used to obtain high deodorizing ability in a small volume.
An organic substance processing apparatus using an oxidation catalyst, such as an oxidation catalyst, is disclosed.

[0008] Deodorization by an oxidation catalyst is carried out by catalytically burning (oxidizing) an organic substance that causes odor and decomposing it into carbon dioxide gas and water. The catalytic combustion is usually carried out by the presence of a catalyst. It is carried out at a temperature lower than the combustion temperature of, without generating a flame, but requires a temperature of around 300 ° C.

Therefore, in order to use the oxidation catalyst for deodorizing the exhaust gas from the processing tank in the organic substance processing apparatus having the above-described structure, it is necessary to heat the exhaust gas to a temperature at which the catalytic combustion can be performed and bring the exhaust gas into contact with the oxidation catalyst. In the related art, conventionally, a deodorizer having a built-in oxidation catalyst in the middle of an exhaust air path and a heater disposed in front of the deodorizer are arranged. It is heated and then passed through a deodorizer to obtain the desired deodorizing effect.

However, the exhaust gas from the processing tank only has a temperature substantially corresponding to the internal temperature of the processing tank (50 to 60 ° C.), and the temperature at which the catalytic combustion can be performed (about 300 ° C.). The load of the heater for heating the processing tank is large, and the load of the heater for heating the inside of the processing bath to maintain the inside of the processing tank at a predetermined temperature is added. As a result, there is a problem that the operating cost is increased.

The exhaust gas after passing through the deodorizer is:
It has a temperature substantially equal to that at the time of the contact combustion, and when this exhaust gas is directly discharged, an article placed near the discharge position is overheated and ignites, and also passes near the discharge position. There are inconveniences such as causing burns to a person, and there is a problem that the selection of an installation place that does not hinder the emission of high-temperature exhaust gas is restricted.

[0012] The present invention has been made in view of such circumstances, and while maintaining high deodorizing performance by using a deodorizer having a built-in oxidation catalyst, the operating cost is reduced and the installation location is limited. It is an object of the present invention to provide an organic matter processing apparatus capable of directly discharging exhaust gas without using the same.

[0013]

An organic substance processing apparatus according to the present invention supplies air into a processing tank for decomposing organic substances,
In an organic matter treatment apparatus, the exhaust gas is exhausted together with a gas generated inside the treatment tank, the exhaust gas is heated through a heater, deodorized through a deodorizer containing an oxidation catalyst, and then released to the outside air. The exhaust gas that has passed through the deodorizer heats the exhaust gas before passing through the heater and forms an exhaust flow path that heats the inside of the processing tank.

Further, in the present invention, a temperature detector for detecting an internal temperature of the processing tank, and means for adjusting a heating amount of the processing tank by exhaust gas passing through a deodorizer based on a detection result of the temperature detector. It is preferable to provide

Further, in the present invention, the means for adjusting the heating amount of the processing tank includes a flow path for heating the processing tank by exhaust gas passing through the deodorizer, and a flow path for not heating the processing tank by exhaust gas passing through the heater. It is preferable to diverge into a road.

Further, in the present invention, it is preferable to provide an electromagnetic opening / closing valve for opening and closing the flow path in a flow path that does not heat the processing tank by exhaust gas passing through the heater.

Further, in the present invention, it is preferable to dispose a temperature sensor in the processing tank.

Further, in the present invention, it is preferable that a control unit for controlling the electromagnetic on-off valve based on the detection result of the temperature sensor is provided.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments thereof. FIG. 1 is a schematic diagram showing a configuration of an organic matter processing apparatus according to the present invention. In the figure, reference numeral 1 denotes a treatment tank for decomposing organic substances, the outside of which is covered with a heat insulating material 10 having a predetermined thickness, and is supported by being suspended inside the outer box 2.

A carrier A having a predetermined depth is accommodated in the processing tank 1. The carrier A is made of sawdust, wood chips, activated carbon and the like, and serves as a home for microorganisms active inside. In the processing tank 1,
Stirrers 3 are arranged on a stirrer shaft 30 laid laterally between both side walls, with stirrers 31, 31,... Protruding radially at predetermined intervals in the axial direction. An end of a stirring shaft 30 protruding to one side of the processing tank 1 is connected to an output end of a stirring motor M fixed in the outer box 2 via a transmission belt 32, and the stirring body 3 is The carrier A is agitated by the stirring rods 31, 31,.

In the upper part of the outer box 2, an inlet 11 which opens into the inside of the processing tank 1 is formed so as to be openable and closable by an upper lid 12, and an organic substance to be treated is opened by operating the upper lid 12. It is thrown into the inside of the processing tank 1 through the inlet 11, is taken in the carrier A by the rotation of the stirrer 3 in a fragmented state, and inhabits the carrier A while being left in this state. Due to the activity of the microorganisms, a small amount of composted residue is left and is decomposed into gas mainly composed of carbon dioxide and water.

The stirrer 3 is driven to rotate every predetermined time (for example, one hour) after it is driven to take in the organic substance every time the organic substance is introduced. This rotation is performed in order to agitate the carrier A together with the organic matter taken in, take air in the upper space of the processing tank 1 into the carrier A, and increase the activity of the microorganism.

During the decomposition of organic substances performed as described above, the inside of the treatment tank 1 is maintained at a high temperature of about 50 to 60 ° C. in order to increase the activity of microorganisms in the carrier A. In the organic matter treatment apparatus according to the present invention, a heat exchanger E2 is laid on the inside bottom of the treatment tank 1 so as to straddle between both side walls, and the inside of the treatment tank 1 is The internal temperature of the processing tank 1 thus heated is, for example, a temperature fixed on the inner wall of the processing tank 1. It is detected by the sensor 15.

The moisture generated by the decomposition of the organic matter in the carrier A evaporates by heating the inside of the processing tank 1 and fills the upper space of the processing tank 1 together with the gas generated by the decomposition. An air supply port 13 having an opening on one side wall and an exhaust port 14 having an opening on the other side wall are formed in the upper part of the processing tank 1, respectively. The latter communicates with the outside of the outer box 2 via an air supply path 4 provided with an exhaust fan 5a on the way. The outside of the processing tank 1 is supplied to the inside of the processing tank 1 through the supply air passage 4 by the operation of the air supply fan 4a.
The exhaust filling the upper space of the
The air is collected by the exhaust fan 14 and discharged to the outside air through the exhaust air passage 5 by the operation of the exhaust fan 5a.

In the organic matter treatment apparatus according to the present invention, a counter-current heat exchanger E 3 is disposed in the middle of the supply air passage 4.
The supply air supplied to the inside of the processing tank 1 is passed outside the high-temperature ventilation introduced into the heat exchanger E3 as described later in order to prevent the temperature inside the processing tank 1 from dropping due to the introduction of the low-temperature supply air. Thus, it is preheated by heat exchange with the ventilation. The temperature of the supply air preheated in this way is detected, for example, by a temperature sensor 16 fixed on the supply air passage 4 at the outlet side of the heat exchanger E3.

The exhaust air from the processing tank 1 that is ventilated in the exhaust air path 5 contains an odor generated due to the decomposition of organic matter inside the processing tank 1, and A deodorizer 6 for deodorizing odor contained in exhaust gas is provided downstream of the exhaust fan 5a, and is interposed with a heater 7 having a built-in heater. The deodorizer 6 performs a deodorizing action by utilizing the catalytic combustion by the oxidation catalyst. The heater 7 heats the ventilation in the exhaust air passage 5 to a predetermined temperature (around 300 ° C.) required for the catalytic combustion. It is provided to do so.

FIG. 2 is a perspective view showing an example of the oxidation catalyst contained in the deodorizer 6. The illustrated oxidation catalyst 6a is provided with Pt-Al2O on the inner surface of a large number of vents 6c, 6c,... Which are juxtaposed on a honeycomb base material 6b made of a heat-resistant material such as ceramics.
3 and the like, and a vapor-deposited film of a substance acting as an oxidation catalyst is formed.
It is built in the deodorizer 6 so as to follow the flow direction of the inside ventilation, and secures a large contact area between the ventilation and the oxidation catalyst to perform favorable contact combustion of ventilation and reduce ventilation resistance. I try to keep it.

The exhaust air passage 5 is arranged in such a manner that the inlet side of the heater 7 and the outlet side of the deodorizer 6 cross each other. A countercurrent heat exchanger E1 is formed to pass through the outside of the vent on the outlet side of the deodorizer 6 and exchange heat between the two. Deodorizer 6 as described above
Exhaust gas heated to about 300 ° C. by passing through the heater 7 is introduced, and is deodorized and sent out by contact combustion accompanying contact with the built-in oxidation catalyst 6a. Maintains a high temperature around 270 ° C. The heat exchanger E1 uses high-temperature ventilation at the outlet side of the deodorizer 6 to preheat the ventilation on the entrance side to the heater 7, thereby reducing the load on the heater 7. it can.

On the other hand, the ventilation on the outlet side of the deodorizer 6 is sent out after the temperature is lowered by the heat exchange in the heat exchanger E1.
The temperature of the ventilation at the time of this sending is sufficiently higher than 50-60 ° C. which is an appropriate temperature inside the processing tank 1. In the organic matter treatment apparatus according to the present invention, the heat retained in the vent on the outlet side of the deodorizer 6, which has been cooled down by passing through the heat exchanger E 1, is used to heat the inside of the treatment tank 1 and supply air into the treatment tank 1. It is used for preheating.

That is, the exhaust air passage 5 on the exit side of the heat exchanger E1
Is the heat exchanger E2 laid on the inner bottom of the processing tank 1.
And the heat exchanger E3 arranged in the middle of the supply air passage 4 in this order, and the ventilation in the exhaust air passage 5
When the heat exchanger E2 is ventilated, the inside of the processing tank 1 that contacts the outside is heated, and when the heat exchanger E3 vents, the supply air that contacts the outside is preheated and then released to the outside air. There is something.

The heat exchangers E2 and E3 are provided with bypass passages 50 and 51 which are not in contact with the ventilation inside the processing tank 1 or the air supply passage 4, respectively. These bypass paths 5
Electromagnetic on-off valves 52 and 53 are interposed in the middle of 0 and 51, respectively. When the electromagnetic on-off valve 52 (or the electromagnetic on-off valve 53) is opened, the ventilation of the exhaust air passage 5 causes heat exchange. E2 and bypass
When the solenoid valve 52 (or the solenoid valve 53) is closed, the air flows through the exhaust air path 5 to the full extent. Is heat exchanger E
2 (or heat exchanger E3).

As described above, the internal temperature of the treatment tank 1 must be maintained at a predetermined temperature (50 to 60 ° C.) suitable for the inhabitation of microorganisms. Tank 1
To obtain a temperature corresponding to the internal temperature of The electromagnetic on-off valves 52 and 53 adjust the ventilation of the heat exchangers E1 and E2 by opening and closing the respective bypass passages 50 and 51 so as to properly heat the inside of the processing tank 1 and preheat the air supply. Is provided.

FIG. 3 is a block diagram of a control system for the above heating and preheating. In the figure, reference numeral 9 denotes a heating control unit using a microprocessor. On the input side of the heating control unit 9, a temperature sensor 15 disposed inside the processing tank 1 and a heating sensor disposed inside the supply air passage 4 are provided. The temperature sensor 16 is connected,
These output signals are provided. Temperature sensors 15, 16
A known temperature sensor using a thermistor, a bimetal, or the like can be used. The heating control unit 9 captures the output signal of the temperature sensor 15 to determine the internal temperature of the processing tank 1 and the output signal of the temperature sensor 16. The temperature of the air supply to the processing tank 1 is recognized by taking in the air.

On the other hand, on the output side of the heating control unit 9, electromagnetic on-off valves 52, 53 disposed in the middle of the bypass passages 50, 51 are provided.
Each is connected via a separate excitation open circuit,
The solenoid valves 2 and 53 are opened and closed according to operation commands given separately from the heating control unit 9. The opening and closing of the solenoid on-off valve 52 is performed based on the detection result of the temperature sensor 15 and the opening and closing of the solenoid on-off valve 53. Opening and closing are performed as follows based on the detection result of the temperature sensor 16, respectively.

FIG. 4 is a flowchart showing the operation of the heating control unit 9 for maintaining the internal temperature of the processing tank 1 properly. The heating control unit 9 starts operation in response to the ON operation of an operation switch (not shown), captures the output of the temperature sensor 15 connected to the input side at a predetermined sampling cycle (step 1), and processes the output. The internal temperature T of the tank 1 is recognized, and the internal temperature T is set to a preset upper limit temperature T1.
(For example, 60 ° C.) (step 2), and when T exceeds T1, an open command is issued to the solenoid on-off valve 52 (step 3).

According to this operation, when the internal temperature T of the processing tank 1 detected by the temperature sensor 15 exceeds the upper limit temperature T1 and the internal temperature of the processing tank 1 is excessively high, the electromagnetic on-off valve 52 is opened and the heat exchange is performed. Since the ventilation to the vessel E2 is reduced, the heating inside the processing tank 1 is reduced, and the internal temperature of the processing tank 1 is gradually lowered due to the heat exchange with the outside air contacting through the peripheral wall.

Next, the heating control section 9 compares the internal temperature T with a preset lower limit temperature T2 (for example, 50 ° C.) (step 4), and when T is lower than T2, the electromagnetic switching valve 52 A close command is issued (step 5).

By this operation, the internal temperature T of the processing tank 1 detected by the temperature sensor 15 falls below the lower limit temperature T2,
When the internal temperature of the processing tank 1 is excessively lowered, the electromagnetic on-off valve 52 is closed, and the ventilation to the heat exchanger E2 increases,
Heating inside the processing tank 1 is strengthened, and the temperature inside the processing tank 1 gradually rises due to heat exchange with the ventilation in the heat exchanger E1.

The above operation is performed by the temperature sensor in step 1.
As shown in FIG. 5, the internal temperature of the processing tank 1 is set between the upper limit temperature T1 and the lower limit temperature T2, for example, within a temperature range of 50-60 ° C., as shown in FIG. It moves up and down repeatedly to maintain a temperature suitable for the inhabitation of microorganisms.

As described above, in the organic substance processing apparatus according to the present invention, the internal temperature of the processing tank 1 can be properly maintained without using a dedicated heater, which can contribute to a reduction in operating costs, Since the heat exchange in the exchanger E2 further lowers the temperature of the ventilation in the exhaust air passage 5, there is no fear that the ventilation of the ventilation to the outside air is hindered, and there is no possibility that the installation location is restricted. In the above description, only the heat exchanger E2 is provided as a heating means inside the processing tank 1, but a heater may be provided as an auxiliary heating means.

FIG. 6 is a flowchart showing the operation of the heating control unit 9 for maintaining the supply air temperature to the processing tank 1 properly. This operation is performed by the temperature sensor provided in the air supply air passage 4.
Based on the 16 detection results, the operation according to the flowchart shown in FIG. 4, that is, the operation for maintaining the internal temperature of the processing tank 1 properly, is performed in the same manner as the operation.

That is, the heating control unit 9 takes in the output of the temperature sensor 16 connected to the input side at a predetermined sampling cycle (step 11), and recognizes the supply air temperature T0 to the processing tank 1 from this output. The supply air temperature T0 is compared with the upper limit temperature T3 (step 12). When T0 is higher than T3, it is determined that the preheating of the air supply is excessive, and an open command is issued to the electromagnetic on-off valve 53 to issue an open command. (Step 13) An operation for reducing the ventilation to the heat exchanger E3 is performed, and then the supply air temperature T0 is compared with the lower limit temperature T4 (Step 14). If T0 is lower than T4, the supply air is reduced. It is determined that the preheating is insufficient, a close command is issued to the electromagnetic on-off valve 52 (step 15), an operation for increasing the ventilation to the heat exchanger E3 is performed, and then the above operation is repeated.

The upper limit temperature T used in the above operation
3 and the lower limit temperature T4 are set substantially equal to the upper limit temperature T1 and the lower limit temperature T2 used for the heating control operation of the processing tank 1, respectively. Is preheated to a temperature substantially equal to the internal temperature of the exhaust air passage, it is possible to prevent a decrease in the internal temperature due to this air supply, and to further reduce the temperature of the ventilation in the exhaust air passage 5 by heat exchange in the heat exchanger E3. Therefore, there is no fear that the ventilation of the ventilation to the outside air is hindered, and there is no fear that the installation location is restricted.

In the above-described embodiment, as means for adjusting the ventilation to the heat exchangers E2 and E3, bypass passages 50 and 51 and electromagnetic on-off valves 52 and 53 arranged in the middle of these are provided. However, other adjusting means such as providing a valve capable of adjusting the opening degree in the middle of the bypass passages 50 and 51 may be used.

Further, the heat exchanger E shown in the above embodiment
2 and E3 have a simple structure in which the contact between the inside and the outside is made through the peripheral surface of the cylindrical body. However, by increasing the contact area by forming a plurality of radiation fins on the peripheral surface, Heat can be efficiently exchanged within a limited length range. Further, the heat exchanger E3 for preheating the air supply is of the countercurrent type, but may be of the cocurrent type or the crossflow type.

Further, in the above-described embodiment, the configuration including the heat exchanger E2 for heating the inside of the processing tank 1 and the heat exchanger E3 for preheating the air supply has been described. However, it goes without saying that a configuration having the heat exchangers E1 and E2 alone is also included in the scope of the present invention.

[0047]

According to the first aspect of the present invention, since the exhaust gas before passing through the heater is preheated by using the high-temperature exhaust gas after passing through the deodorizer, the load on the heater is reduced. At the same time, since the inside of the processing tank is heated using the high-temperature exhaust gas after passing through the deodorizer, a heater for heating the inside of the processing tank is substantially unnecessary, and the operating cost is maintained while maintaining high deodorizing performance. Can be greatly reduced.

Further, the heat of the high-temperature exhaust gas after passing through the deodorizer is effectively used for preheating the exhaust gas before deodorization and for heating the inside of the treatment tank, and the temperature of the exhaust gas discharged to the outside air decreases. There is an effect that there is no fear that the discharge to the air is hindered, and the installation place is not restricted.

According to the second to sixth aspects of the present invention, the amount of heating of the processing tank by the exhaust gas passing through the deodorizer is adjusted based on the detection result of the internal temperature of the processing tank. It is possible to maintain the temperature appropriately and obtain effects such as stable processing ability.

[Brief description of the drawings]

FIG. 1 is a schematic view showing one embodiment of an organic substance processing apparatus according to the present invention.

FIG. 2 is a perspective view showing an example of an oxidation catalyst built in a deodorizer.

FIG. 3 is a block diagram of a control system for heating the inside of the processing tank and preheating air supply to the processing tank.

FIG. 4 is a flowchart showing the operation of a heating control unit for heating a processing tank.

FIG. 5 is a time chart showing a change state of the internal temperature of the processing tank.

FIG. 6 is a flowchart showing the operation of a heating control unit for preheating air supply.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processing tank 3 Stirrer 4 Supply air path 5 Exhaust air path 6 Deodorizer 7 Heater 9 Heating control unit 13 Air supply port 14 Exhaust port 15 Temperature sensor 16 Temperature sensor 50 Bypass path 51 Bypass path 52 Electromagnetic on-off valve 53 Electromagnetic open / close Valve E1 heat exchanger E2 heat exchanger E3 heat exchanger

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) B01J 37/02 301 B01D 53/36 HF term (reference) 4C080 AA07 BB02 CC01 CC15 HH05 JJ03 KK02 LL02 MM03 MM07 NN02 QQ11 QQ17 4D004 AA02 AA03 AB01 AB10 BA04 CA15 CA19 CA22 CA48 CB04 CB28 CB32 CB36 CC02 CC08 CC09 CC11 CC15 DA01 DA02 DA06 4D048 AA22 AB01 BA03X BA30X BA41X BB02 CC52 CC54 DA01 DA02 DA06

Claims (6)

[Claims] 1. An inside of a treatment tank for decomposing organic substances is supplied and exhausted together with a gas generated inside the treatment tank. The exhaust gas is heated through a heater to heat the oxidation catalyst. In an organic matter processing apparatus that releases air to the outside after deodorizing by passing through a built-in deodorizer, the exhaust gas that has passed through the deodorizer heats the exhaust before passing through the heater, and forms an exhaust flow path that heats the inside of the processing tank. An organic matter processing apparatus characterized by being formed. 2. A temperature detector for detecting an internal temperature of the processing tank, and means for adjusting a heating amount of the processing tank by exhaust gas passing through the deodorizer based on a detection result of the temperature detector. The organic matter processing apparatus according to claim 1, wherein: 3. A means for adjusting the amount of heating of the processing tank,
A flow path for heating the processing tank by exhaust gas passing through the deodorizer,
3. The organic substance processing apparatus according to claim 2, wherein the exhaust gas having passed through the heater is diverted into a flow path that does not heat the processing tank. 4. The organic substance processing apparatus according to claim 3, wherein a solenoid valve for opening and closing the flow path is provided in a flow path in which the processing tank is not heated by exhaust gas passing through the heater. 5. The organic substance processing apparatus according to claim 2, wherein a temperature sensor is provided in the processing tank. 6. Based on a detection result of the temperature sensor,
The organic matter processing apparatus according to claim 4, further comprising a control unit configured to control the electromagnetic on-off valve.