JPH08318248A - Organic matter treatment apparatus - Google Patents

Abstract

PURPOSE: To enhance org. matter treatment capacity by mounting a first heater on the outer surface of a treatment tank corresponding to the position where org. matter is accumulated in the treatment tank and mounting a second heater on the outer surface of the treatment tank corresponding to the position above the org. matter in the treatment tank. CONSTITUTION: A first planar heater 4 is mounted on the outer surface of a treatment tank 1 corresponding to the position where org. matter is accumulated in the treatment tank 1 so as to face to an air passage and the org. matter such as garbage charged in the treatment tank 1 is held to 30-40 deg.C by the first thermistor 5 arranged in the vicinity of the outer surface of the bottom part of the treatment tank 1. A second planar heater 6 is mounted on the outer surfrace of the treatment tank 1 corresponding to an air layer 3 so as to face to the air passage and the air layer 2 is held to 20-25 deg.C by the second thermistor 7 arrangd to a circulating passage. By this constitution, the temp. irregularity of an upper space is elminated and the moisture of org. matter can be efficiently evaporated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic substance treating apparatus for treating organic substances such as garbage with microorganisms.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Laid-Open No. 7-24435 (B09B 3/00)
As shown in Fig. 2, the heating means provided inside the treatment tank maintains the temperature inside the treatment tank at the optimum temperature for activating the microorganisms that decompose organic substances, and the microorganisms cultured in the treatment medium decompose organic substances such as garbage. An organic substance processing device for processing is known.

In this organic substance treatment apparatus, a heating means is provided in a substantially central portion of the treatment tank so as to control the inside of the treatment tank to an optimum temperature for activating microorganisms. When the temperature is low, there is a drawback that the temperature of the vicinity of the wall surface of the processing tank is lowered due to the influence of the outside air and the processing ability of the organic matter is lowered. In order to solve this, it is possible to increase the capacity of the heating means so that the temperature near the wall of the treatment tank will be the optimum, but the heat generated by the decomposition of organic matter is added, and the central part of the treatment tank becomes hot and the microorganisms The problem of dying arises. In addition, since the heating means is in the processing tank, it is necessary to protect the heating means from gas, dust, etc. generated in the processing tank, which complicates the structure and increases the number of parts and the cost.

Further, since no means for heating the air above the organic matter in the treatment tank is provided, when the outside air temperature is low, the temperature of the surface of the organic matter is lowered by the influence of the outside air, and the treatment capacity of the organic matter is reduced. There is. Further, although oxygen supply is also necessary for activating the microorganisms, the conventional technique has a drawback that the oxygen supply is insufficient because only natural ventilation is performed.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide an organic substance treating apparatus capable of improving the organic substance treating ability with a simple structure.

[0006]

The first means for solving the above-mentioned problems is a treatment tank for accommodating and decomposing organic substances, and a treatment corresponding to the position where the organic substances are deposited in the treatment tank. A first heater mounted on the outer surface of the tank for heating the inside of the processing tank; and a second heater mounted on the outer surface of the processing tank corresponding to a position above the organic substance in the processing tank for heating the inside of the processing tank. Is characterized by.

A second means for solving the above problems is
A treatment tank for accommodating and decomposing organic matter, a first heater mounted on the outer surface of the treatment tank corresponding to a position where the organic matter is deposited in the treatment tank, and a heater for heating the inside of the treatment tank; A second heater mounted on the outer surface of the treatment tank corresponding to a position above the organic matter, for heating the inside of the treatment tank, a first control unit for controlling the first heater, and a second control unit for controlling the second heater. Is provided.

A third means for solving the above problems is
A treatment tank for accommodating and decomposing organic matter, a first heater mounted on the outer surface of the treatment tank corresponding to a position where the organic matter is deposited in the treatment tank, and a heater for heating the inside of the treatment tank; A second heater mounted on the outer surface of the treatment tank corresponding to a position above the organic substance, for heating the inside of the treatment tank, and a control circuit for controlling the first heater and the second heater, and above the organic substance in the treatment tank. It is characterized in that the temperature of the position is set lower than the temperature of the position where the organic matter is deposited.

A fourth means for solving the above problems is
A treatment tank for accommodating and decomposing organic matter, a first heater mounted on the outer surface of the treatment tank corresponding to a position where the organic matter is deposited in the treatment tank, and a heater for heating the inside of the treatment tank; A second heater that is mounted on the outer surface of the treatment tank corresponding to a position above the organic matter and that heats the inside of the treatment tank, and a circulation path that circulates the air in the treatment tank in the space above the organic matter in the treatment tank It is characterized by that.

A fifth means for solving the above-mentioned problems is as follows.
A treatment tank for accommodating and decomposing organic substances, a suction port formed in the treatment tank, and an outer surface of the treatment tank corresponding to a position where the organic substances are accumulated in the treatment tank are attached to heat the inside of the treatment tank. A first heater, a second heater mounted on the outer surface of the treatment tank corresponding to a position above the organic matter in the treatment tank, and heating the inside of the treatment tank; and a treatment tank in a space above the organic matter in the treatment tank. And a control circuit for controlling the second heater on the basis of the output of the detection part. The detection part for detecting the temperature of the air in the processing tank is provided in the circulation path. It is characterized by that.

[0011]

According to the first means of the present invention, the first heater heats the position where organic substances are deposited in the treatment tank to maintain the organic substances at an optimum temperature for decomposition, and the second heater causes the treatment tank to be decomposed. By heating the space above the organic matter inside, it is possible to prevent the temperature of the space above the organic matter from decreasing due to the effect of the outside air when the outside air temperature is low, such as in winter, and improve the decomposition efficiency of organic matter. . Further, since the first heater and the second heater are mounted on the outer surface of the processing tank, they are not affected by the gas generated by the decomposition of the organic matter, and there is no need for a special configuration for protecting the heater. , The structure is simplified.

According to the second means of the present invention, the first heater heats the position where the organic substances are deposited in the treatment tank to maintain the organic substances at the optimum temperature for decomposition, and the second heater causes the treatment tank to be decomposed. By heating the space above the organic matter inside, it is possible to prevent the temperature of the space above the organic matter from decreasing due to the effect of the outside air when the outside air temperature is low, such as in winter, and improve the decomposition efficiency of organic matter. . Moreover, since the first heater and the second heater are independently controlled, the position where the organic matter is deposited and the space above it are maintained at optimum temperatures.

According to the third means of the present invention, the first heater heats the position where the organic substances are deposited in the treatment tank to maintain the organic substances at the optimum temperature for decomposition, and the second heater causes the treatment tank to be decomposed. By heating the space above the organic matter inside, it is possible to prevent the temperature of the space above the organic matter from decreasing due to the effect of the outside air when the outside air temperature is low, such as in winter, and improve the decomposition efficiency of organic matter. . Further, since the temperature of the space above the organic substance is set lower than the temperature of the position where the organic substance is deposited, it is prevented that the surface of the organic substance is dried and the decomposition treatment efficiency is lowered.

According to the fourth means of the present invention, the first heater heats the position where the organic substances are deposited in the treatment tank to maintain the organic substances at the optimum temperature for decomposition, and the second heater causes the treatment tank to be decomposed. By heating the space above the organic matter inside, it is possible to prevent the temperature of the space above the organic matter from decreasing due to the effect of the outside air when the outside air temperature is low, such as in winter, and improve the decomposition efficiency of organic matter. . Further, by circulating the air in the space above the organic matter through the circulation path, the temperature unevenness in the space above is eliminated, the moisture of the organic matter is efficiently evaporated, and the organic matter decomposition treatment efficiency is further improved.

According to the fifth means of the present invention, the position where organic substances are deposited in the processing tank is heated by the first heater to maintain the organic substances at the optimum temperature for decomposition, and the second heater is used for the processing tank. By heating the space above the organic matter inside, it is possible to prevent the temperature of the space above the organic matter from decreasing due to the effect of the outside air when the outside air temperature is low, such as in winter, and improve the decomposition efficiency of organic matter. . In addition, by circulating the air in the space above the organic matter through the circulation path, the temperature unevenness in the space above is eliminated, the water content of the organic matter is efficiently evaporated, and the decomposition efficiency of the organic matter is further improved. Since the temperature detection unit is arranged in the passage, reliable control is performed without being affected by the outside air supplied into the processing tank.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.

Reference numeral 1 denotes a treatment tank having a top opening for accommodating a carrier 2 made of wood chips such as sawdust and activated carbon. The bottom portion has a substantially semicircular cross section, and the carrier 2 in the treatment tank 1 and a circulation path described later are provided. An air layer 3 is formed in the space between them.

Reference numeral 4 denotes a first planar heater which is mounted on the outer surface of the processing tank 1 corresponding to the position where the organic substances are deposited in the processing tank 1 and faces the air flow path described later. The first thermistor 5 installed controls the organic substances such as kitchen waste introduced into the processing tank 1 at 30 to 40 degrees Celsius.

Reference numeral 6 denotes a second planar heater which is mounted on the outer surface of the processing tank 1 corresponding to the air layer 3 and faces the air flow path. The second thermistor 7 installed in the circulation path described later allows the air layer 3 is controlled to maintain 20 to 25 degrees Celsius.

Reference numeral 8 denotes an opening formed at the bottom of the bottom surface of the processing tank 1, the opening edge extending downward. Reference numeral 9 denotes a suction port provided on the side surface of the processing tank 1 in the vicinity of a discharge tube 19 described later, and to an intake port 12 described later through an air flow path formed between the outer surface of the processing tank 1 and a main body case described later. It is in communication.

Reference numeral 10 denotes a lower case made of synthetic resin, on which the processing tank 1 is placed, and the upper case 45 described later constitutes a main body case. Reference numeral 11 is a leg portion formed on both sides of the lower case 10. The leg portion 11 forms a space between the bottom surface of the lower case 10 and the installation surface, and the leg portion 11 has an opening 8 on the bottom surface of the processing tank 1. The corresponding position is opened.

Reference numeral 12 is an intake port formed on the back side of the lower case 10.

Reference numeral 13 denotes a metal first reinforcing plate which is mounted on one side surface of the processing tank 1. The upper end is screwed to the upper surface of the processing tank 1 and the lower end is screwed to the lower case 10. There is. Reference numeral 14 denotes a metal second reinforcing plate fixed to the other side surface of the processing tank 1 opposite to the one side surface, and the lower end of the second reinforcing plate is screwed to the lower case 10 by screwing.
The processing tank 1 and the lower case 10 are fixed by screwing the 13 and the second reinforcing plate 14 to the lower case 10.

Reference numeral 15 is the first reinforcing plate 13 and the second reinforcing plate 13 of the processing tank 1.
Reinforcing the processing tank 1 with a first reinforcing frame fixed to the first reinforcing plate 13 and the second reinforcing plate 14 with a first reinforcing frame fixed to approximately the center of both side surfaces adjacent to the both side surfaces on which the reinforcing plate 14 is mounted. The side wall of the processing tank 1 is prevented from expanding outwardly by the stirring of the stirrer 30 described later. Reference numeral 16 denotes a second reinforcing frame disposed on the lower part of the front side of the processing tank 1, which is fixed to the first reinforcing plate 13, the second reinforcing plate 14 and the lower case 10, and is a lower case of the processing tank 1.
It is designed to be fixed to 10.

Numeral 17 is the upper part of the rear wall of the processing tank 1,
In the recess formed in the left-right direction, a suction cylinder 18 and a discharge cylinder 19 communicating with the processing tank 1 are extended downward at both ends of the recess 17. The discharge tube 19 is divided into front and rear by a rear wall of the processing tank 1. A front part of the rear wall communicates with the inside of the processing tank 1 and constitutes a part of a circulation path described later. The exhaust passage 21 formed in the back surface of the processing tank 1 communicates with an exhaust port 21 formed in the lower case 10.

Reference numeral 22 denotes a board housing case which covers the upper side of the recess 17 in a state where a space is formed between the bottom surface of the recess 17 and is screwed to the recess 17, and is a control board 23 on which control components are mounted. The space between the recess 17 and the substrate storage case 22 and the front portions of the intake cylinder 18 and the discharge cylinder 19 constitute a circulation path for circulating the air in the processing tank 1.

24 is a fan mounted on the discharge tube 19,
The air in the air layer 3 is sucked from the suction cylinder 18 by the drive of the fan 24 and is discharged from the discharge cylinder 19 through the space between the recess 17 and the substrate storage case 22. Since it is divided into front and rear by the rear wall of the tank 1, the air sucked from the intake cylinder 18 circulates in the processing tank 1 through the circulation path, and a part of this air is exhausted from the rear part of the discharge cylinder 19 to the exhaust path. It is exhausted to the outside from the exhaust port 21 via 20.

Reference numeral 25 denotes a filter mounted on the suction cylinder 18 to prevent inconveniences such as dust or the like rising due to stirring of a stirring body 30 described later adheres to the second thermistor 7 or the fan 24.

Reference numeral 26 designates a concave portion formed in the upper portion of the processing tank 1 adjacent to the suction cylinder 18, and an electric motor 27 is arranged therein. The electric motor 27 decelerates the rotation of the electric motor 27 by the reduction mechanism 28 and rotationally drives the stirring body 30 described later. Reference numeral 29 denotes a synthetic resin cover that covers the speed reduction mechanism portion 28, supports the shaft of the gear of the speed reduction mechanism portion 28, and suppresses sound leakage from the speed reduction mechanism portion 28.

Reference numeral 30 denotes an agitator rotatably arranged in the processing tank 1, which penetrates both side surfaces of the processing tank 1 and rotates on a bearing 31 fixed to the first reinforcing plate 13 and the second reinforcing plate 14. A stirring shaft 32 that is freely supported and a plurality of stirring blades 33 that are fixed to the stirring shaft 32.
It consists of and.

Reference numeral 34 denotes a synthetic resin guide member fixed to the lower case 10 and formed in a substantially L shape. Reference numeral 35 denotes a first guide portion formed between the guide member 34 and the edge of the opening 8 of the processing tank 1 so as to sandwich a side edge of a shutter 37 described later. Reference numeral 36 is a second guide portion formed on the guide member 34, and is adapted to support a collar portion 44 of a container 43 described later.

A shutter 37 is slidably mounted on the first guide portion 35 to openably and closably close the opening 8 on the bottom surface of the processing tank 1, and is a flat plate made of a highly corrosion-resistant metal material, in this embodiment, stainless steel. -Shaped closure 38 and synthetic resin handle 39
It consists of and. Reference numeral 40 denotes a storage portion formed in the handle 39, in which a magnet 41 is stored.

Reference numeral 42 denotes a reed switch provided in the lower case 10, which is turned on and off by the magnetic force of the magnet 41, pulls the shutter 37 forward, and opens the opening 8 at the bottom of the processing tank 1 to open the electric motor 27. Is supposed to stop.

Reference numeral 43 denotes the processing tank 1 by the second guide portion 36.
When the carrier 2 is replaced, the carrier 2 is supported below the opening 8 of the carrier 2.
Is a container made of a transparent synthetic resin, which has a collar portion 44 on the periphery. With respect to the container 43, the central portion of the front flange portion 44 is lowered, and when the container 43 is pulled out, the handle 39 of the shutter 37 is held.
Do not come into contact with.

Reference numeral 45 denotes an upper case made of synthetic resin covering the processing tank 1. The lower parts of both side surfaces and the lower part of the rear surface are screwed to the lower case 10 so that the lower case 10 and the upper case 45 form a main body case. It has become.

Reference numeral 46 denotes a handle portion mounted on the upper case 45, which is screwed to the processing tank 1 and the cover 29. Reference numeral 47 denotes a charging opening formed on the upper surface of the upper case 45, the opening edge of which extends into the processing tank 1. Reference numeral 48 denotes a seal body attached to the opening edge of the upper surface of the processing tank 1, which is made of foamed resin,
It abuts the edge of the opening 47 to prevent leakage of offensive odors and invasion of insects.

Reference numeral 49 denotes a lid body which is swingably supported on the upper surface of the upper case 45, and which closes the opening 47 so as to be openable and closable. 50 is a sealing body made of foamed resin mounted on the back surface of the lid body 49, which abuts on the periphery of the charging opening 47 on the top surface of the upper case 45, so that the malodor in the processing tank 1 leaks to the outside through the charging opening 47. Insects are prevented from entering the processing tank 1 through the input opening 47.

Reference numeral 51 denotes a display portion formed on the upper surface of the upper case 45 for displaying the operating states of the electric motor 27, the fan 24, etc., and a lid is provided through a see-through window 52 formed in the lid 49. The operating state can be confirmed with the body 49 kept closed.

Next, the electric circuit diagram will be described in detail with reference to FIG.

Reference numeral 53 is a control circuit for inputting outputs from the first thermistor 5, the second thermistor 7, the reed switch 42 and a lid detecting means 54 which will be described later, and the first planar heater 4 via the first controller 55. The second planar heater 6, the fan 24, and the electric motor 27 are controlled via the second controller.

The lid detecting means 54 has a reed switch (not shown) attached to the upper case 45 and is turned on and off by a magnet (not shown) attached to the lid 49. When the lid 49 is opened, the power supply is stopped. The power is turned on when it is closed.

Then, the lid 49 is opened, and an organic substance such as garbage is put into the processing tank 1 through the feeding opening 47 to close the lid 49. The lid detecting means 54 detects the closed state of the lid 49, and the control circuit 53 energizes the electric motor 27, the first planar heater 4, the fan 24 and the second planar heater 6 based on the output thereof.

When the electric motor 27 and the first planar heater 4 are energized, the agitator 30 is rotated to mix the carrier 2 and the organic matter, and the temperature inside the treatment tank 1 is set to an optimum range for activating microorganisms and the like. The maintained organic matter is decomposed into carbon dioxide and water by the microorganisms cultured on the carrier 2 and composted.

Further, by energizing the fan 24 and the second planar heater 6, the air in the air layer 3 is circulated while being heated through the circulation path, and the water generated by the decomposition of the organic matter is vaporized,
The water content of the carrier 2 is maintained within an optimum range for activation of microorganisms and the like, and oxygen necessary for activation of microorganisms is supplied.

Since the air layer 3 must prevent the surface of the organic substance from drying and prevent the deterioration of the organic substance treatment capacity, and must maintain the optimum temperature at which the microorganisms are activated, the control temperature of the second planar heater 6 is controlled. Is set to a temperature slightly lower than that of the first planar heater 4. Further, since the second thermistor 7 is installed in the circulation path, it prevents the external air taken in through the suction port 9 from being directly detected, and prevents the second planar heater 6 from malfunctioning.

A part of the air circulating in the processing tank 1 is exhausted from the rear portion of the discharge tube 19 to the outside of the main body case through the exhaust passage 20 and the exhaust port 21, so that the air in the processing tank 1 is in a humid condition. To improve the efficiency of removing water in the treatment tank 1, activate the microorganisms, and improve the ability to treat organic substances.

As the air in the processing tank 1 is exhausted to the outside, the outside air is taken into the main body case from the intake port 12 formed in the lower case 10, and the suction port 9 formed on the side surface of the processing tank 1
The air that is supplied into the processing tank 1 from the inside is heated by the first planar heater 4 and the second planar heater 6 and is mixed with the air circulating in the processing tank 1. Therefore, even when the outside air temperature is low, such as in winter, the treatment tank 1
It is possible to prevent a decrease in the organic substance processing ability without significantly decreasing the internal temperature.

Further, since the first planar heater 4 and the second planar heater 6 are mounted on the outer surface of the processing tank 1, it is possible to prevent corrosion and dust from being accumulated due to the gas generated in the processing tank 1. Therefore, a special structure for protecting the first planar heater 4 and the second planar heater 6 is unnecessary, and the structure can be simplified.

[0049]

According to the constitution of claim 1 of the present invention, with a simple constitution, the inside of the treatment tank is maintained at the optimum temperature for activating the microorganisms, and the space above the organic matter is affected by the outside air temperature. It is possible to prevent the processing efficiency from being lowered due to the decrease and to improve the organic substance processing efficiency.

According to the structure of claim 2 of the present invention, the first heater and the second heater are independently controlled with a simple structure so that the position where the organic substances are deposited in the processing tank and the space above it are respectively set. While maintaining the optimum temperature, it is possible to prevent a decrease in the processing efficiency due to a decrease in the space above the organic substance due to the influence of the outside air temperature, and it is possible to improve the organic substance processing efficiency.

According to the structure of claim 3 of the present invention, the first heater and the second heater are controlled with a simple structure to optimize the optimum temperature at the position where the organic substances are deposited in the processing tank and the space above it. In addition to maintaining the above, it is possible to prevent a decrease in processing efficiency due to a decrease in the space above the organic matter due to the influence of the outside air temperature. By setting it lower, it is possible to prevent degradation of the decomposition treatment efficiency due to drying of the surface of the organic matter, and it is possible to improve the efficiency of the organic matter treatment.

According to the structure of claim 4 of the present invention, with a simple structure, the first heater and the second heater are controlled to optimize the position where the organic substances are deposited in the processing tank and the space above it. Along with maintaining the temperature, the air in the upper space is circulated through a circulation path to eliminate temperature unevenness in the upper space, and it is possible to efficiently evaporate the water content of the organic matter, improving the efficiency of organic matter treatment. There is an effect such as being able to.

According to the structure of claim 5 of the present invention, with a simple structure, the first heater and the second heater are controlled to optimize the position where the organic substances are deposited in the processing tank and the space above it. While maintaining the temperature, the air in the upper space is circulated through the circulation path to eliminate temperature unevenness in the upper space, and it is possible to efficiently evaporate the water content of the organic matter, and to detect the temperature in the circulation path. By arranging the parts, reliable control can be performed without being affected by the outside air supplied into the processing tank, and the organic material processing efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view seen from the other direction.

FIG. 3 is a sectional view of a main part of the shutter.

FIG. 4 is a bottom view of the same.

FIG. 5 is the same electric circuit diagram.

[Explanation of symbols]

 1 Processing Tank 3 First Sheet Heater 6 Second Sheet Heater

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Mitsuyoshi Otani 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (5)

[Claims] 1. A treatment tank for accommodating and decomposing organic matter, and a first heater mounted on the outer surface of the treatment tank corresponding to the position where the organic matter is deposited in the treatment tank, for heating the inside of the treatment tank. An organic substance processing apparatus, comprising: a second heater mounted on the outer surface of the treatment tank corresponding to a position above the organic matter in the treatment tank and heating the inside of the treatment tank. 2. A treatment tank for accommodating and decomposing organic matter, and a first heater mounted on the outer surface of the treatment tank corresponding to the position where the organic matter is deposited in the treatment tank and heating the inside of the treatment tank. A second heater which is mounted on the outer surface of the treatment tank corresponding to a position above the organic matter in the treatment tank and heats the inside of the treatment tank;
An organic matter processing apparatus, comprising: a first controller that controls the first heater; and a second controller that controls the second heater. 3. A treatment tank for accommodating and decomposing organic matter, and a first heater mounted on the outer surface of the treatment tank corresponding to the position where the organic matter is deposited in the treatment tank, for heating the inside of the treatment tank. A second heater which is mounted on the outer surface of the treatment tank corresponding to a position above the organic matter in the treatment tank and heats the inside of the treatment tank;
A control circuit for controlling the first heater and the second heater, wherein the temperature of the position above the organic substance in the processing tank is set lower than the temperature of the position where the organic substance is deposited. . 4. A treatment tank for accommodating and decomposing organic matter, and a first heater mounted on the outer surface of the treatment tank corresponding to the position where the organic matter is deposited in the treatment tank, for heating the inside of the treatment tank. A second heater which is mounted on the outer surface of the treatment tank corresponding to a position above the organic matter in the treatment tank and heats the inside of the treatment tank;
An organic matter processing apparatus comprising: a circulation path for circulating air in the treatment tank in a space above the organic matter in the treatment tank. 5. A treatment tank for accommodating and decomposing an organic substance, a suction port formed in the treatment tank, and an outer surface of the treatment tank corresponding to a position where the organic substance is deposited in the treatment tank, A first heater for heating the inside of the treatment tank, and an outer surface of the treatment tank corresponding to a position above the organic substance in the treatment tank,
A detection unit that includes a second heater that heats the inside of the processing tank, and a circulation path that circulates the air inside the processing tank in the space above the organic substances in the processing tank, and detects the temperature of the air inside the processing tank. Is provided in the circulation path, and a control circuit for controlling the second heater based on the output of the detection unit is provided.