WO2019044995A1

WO2019044995A1 - Apparatus and method for treating organic matter including harmful microorganisms

Info

Publication number: WO2019044995A1
Application number: PCT/JP2018/032174
Authority: WO
Inventors: 眞一下瀬
Original assignee: 株式会社下瀬微生物研究所
Priority date: 2017-08-31
Filing date: 2018-08-30
Publication date: 2019-03-07
Also published as: CN111465457A; CN111465457B; JP6829468B2; JP2019042655A

Abstract

[Problem] To achieve an optimum environment for microorganism activity by restraining activity of bacteria and the like, and enable the treatment of organic matter contaminated by microorganisms, when waste such as organic matter (object to be treated) is fermented and dried using added microorganisms while being heated under reduced pressure using a fermentation-drying device 3. [Solution] The present invention has: a step (step S2) for holding organic matter including harmful microorganisms, in a pressure resistant tank 30 (a sealed container), heating the pressure resistant tank 30 to a predetermined temperature or higher and maintaining the pressure resistant tank 30 for a predetermined time period to perform a sterilization treatment; then, a step (step S3) for adding predetermined microorganisms to the organic matter; and a step (step S4) for heating and stirring within a predetermined temperature range while reducing the pressure inside the pressure resistant tank 30 , and fermenting and drying the organic matter using predetermined microorganisms, thereby obtaining a volume-reduced dried substance.

Description

Method and apparatus for treating organic matter containing harmful microorganisms

The present invention relates to the treatment of organic matter containing harmful microorganisms, and in particular when the organic matter contains harmful microorganisms, and organic matter containing harmful microorganisms discarded in an airport or hospital is within the area. It is suitable if it has to be processed.

Conventionally, for example, as a method for treating waste (general waste) discharged from general households and industrial waste from various establishments etc., it is used as fuel after drying it, or fermentation using microorganisms is carried out It is known to use it as compost or feed after it is allowed to However, the object of such treatment contains various organic substances such as garbage, paper waste, human waste, domestic wastewater, animal and plant residues, sludge, etc. It is necessary.

In this regard, the inventor of the present application promotes the fermentation of the organic matter by storing the organic matter such as food waste in a closed container and adding and stirring a predetermined microorganism while heating to a predetermined temperature range under reduced pressure. Patent application has already been filed for an apparatus (fermentation drying apparatus) capable of efficiently removing water and drying it.

For example, in the case of the fermentation / drying apparatus described in Patent Document 1, since the boiling point of water is lowered by depressurizing the inside of the closed container, it is possible to prevent the kill of the microorganism due to the temperature rise. In addition, evaporation of water contained in the organic matter and the like in the inside is promoted, and the drying time can be shortened.

JP 2007-319738 A

However, wastes generally contain various microorganisms, and even if it is intended to promote the fermentation of organic matter by adding a predetermined microorganism as in the prior art (Patent Document 1), it is suitable for the function. Under the environment, the action of microorganisms other than those added, that is, the microorganisms contained in the waste, is often activated. If this happens, the action of the added microorganism is inhibited, and it becomes impossible to promote the fermentation of the organic matter as intended.

Also, in recent years, harmful microorganisms such as viruses that can infect humans as well as livestock, for example, avian influenza, are known, and the morbidity of livestock contaminated with such harmful microorganisms causes the spread of infection. There is a fact that it must be buried in the ground under strict control to prevent it. Furthermore, there is a possibility that the organic matter discarded in the airport or in the hospital must be disposed of in the area, because it may be contaminated with harmful microorganisms. Here, harmful microorganisms refer to viruses, bacteria, yeasts, molds, protozoa, parasites and the like which harm humans, animals and plants, and the environment.

In view of such a situation, the object of the present invention is to add the microorganism which is added after killing the microorganism contained in the object when the object is fermented and dried using a known fermentation and drying apparatus. By achieving an optimal activity environment, it is possible to treat even organic substances contaminated with harmful microorganisms and organic substances that are likely to be harmful, under atmospheric pressure.

In order to solve the above-mentioned problems, the treatment method of the present invention is to sterilize the organic matter by storing the organic matter containing the harmful microorganism in a closed container, heating it to a predetermined temperature or higher and maintaining it for a predetermined time. A step of adding a predetermined microorganism to the organic substance in the closed container after the sterilization step, and thereafter stirring the organic substance in the closed container while heating to a predetermined temperature range under reduced pressure; And the step of fermenting and drying the organic matter using the predetermined microorganism to obtain a reduced-volume dried product.

According to this method, harmful organisms such as bacteria and viruses can be killed by first storing the organic matter in a sealed container and heating it to a predetermined temperature or higher in the sterilization step and maintaining it for a predetermined time. Thereafter, predetermined microorganisms can be added, and at that time, an optimum activity environment can be realized to process organic substances such as carcasses contaminated with harmful microorganisms in the fermentation and drying step.

As such, in order to kill harmful microorganisms such as bacteria and viruses contained in organic matter, the inside of the sealed container is maintained at, for example, 130 ° C. or more for about 10 minutes (at least 120 ° C. or more, in this case, about 20 minutes) In such a high temperature state, a predetermined microorganism for fermentative drying is also killed. Therefore, after the sterilizing step, the temperature in the closed container is set to the temperature before starting the fermentative drying step. Once reduced, it is preferred to add the predetermined microorganism under atmospheric pressure.

Therefore, when a vacuum pump for decompressing the inside is connected to the sealed container via the communication passage, after the sterilization step, the vacuum pump is operated before the addition step to seal the sealed container. The pressure in the container may be reduced. By so doing, the temperature can be reduced quickly by depressurizing the inside of the closed container.

In that case, there may be a case where a condensing unit for liquefying (condensing) the vapor generated from the organic substance in the sealed container in the fermentation and drying step may be interposed in the communication passage, Microorganisms remain. Therefore, it is preferable to provide an atmosphere open valve capable of opening the atmosphere between the condensation section and the vacuum pump, and in the addition step, open the atmosphere open valve to introduce outside air into the communication passage. .

In this case, the outside air flowing into the communication passage from the open air release valve flows through the condensation unit and is sucked into the closed container, and a predetermined microorganism from the condensation unit flows into the closed container by the flow. Be taken. Therefore, a predetermined microorganism can be added to the organic matter after sterilization processing is performed inside the closed container without opening the organic material input port and the like provided in the sealed container.

Furthermore, it is preferable that an open / close valve capable of opening and closing between the condensing unit and the closed container is provided in the communication passage, and that the inside of the closed container is heated in a state where the open / close valve is closed in the sterilization step. . In this case, the temperature in the closed container can be efficiently raised by heating only the space on the closed container side of the on-off valve. On the other hand, in the addition step, both the atmosphere release valve and the on-off valve may be opened.

From another point of view, the present invention is an apparatus for treating organic matter containing harmful microorganisms, wherein the organic matter is contained in a closed vessel, stirred while heating to a predetermined temperature range under reduced pressure, and using a predetermined microorganism A fermentation / drying apparatus for fermenting and drying organic matter to obtain a reduced-volume dried product, a vacuum pump connected to the closed container via a communication passage to decompress the inside thereof, and the communication passage; A condenser for liquefying the vapor generated in the closed vessel, an atmosphere open valve capable of opening to the atmosphere between the condenser and the vacuum pump, an open / close valve capable of opening and closing between the condenser and the closed vessel; Is provided. The processing method described above can be suitably realized by using the processing apparatus configured in this way.

According to the treatment method and treatment apparatus according to the present invention, an organic substance containing harmful microorganisms is contained in a closed container, the harmful microorganisms are killed by sterilization treatment under high temperature and high pressure conditions, and heating is performed under reduced pressure to use predetermined microorganisms. As well as promoting the fermentation of the organic matter, drying can be promoted. Therefore, the organic matter such as the corpse of livestock contaminated with harmful microorganisms can be fermented and dried.

It is a schematic block diagram of the processing apparatus which concerns on embodiment. It is a schematic block diagram of a fermentation drying apparatus. It is a flowchart figure of the processing system of organic matter.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic block diagram of a processing apparatus according to an embodiment of the present invention, which relates to, for example, incineration after subjecting an organic substance such as a pig killed in a pig farm to a fermentation and drying treatment.

And in the processing apparatus of this embodiment, the receiving hopper 1 into which organic substance is thrown in is provided, and the organic substance is supplied to the fermentation drying apparatus 3 by the conveyance conveyor 2 attached to the receiving hopper 1.

-Fermentation dryer-
The fermentation / drying apparatus 3 is a known apparatus described in Patent Document 1 and the like, and as described below, the organic substance to be treated is stirred while heating to a predetermined temperature range under reduced pressure, and microorganisms Is used to ferment and dry the organic matter to obtain a reduced-volume dried product.

As schematically shown in FIG. 2, as described above, the fermentation / drying apparatus 3 is airtightly formed so as to hold the inside at or above atmospheric pressure as a closed container for containing the organic matter supplied by the transport conveyor 21. A cylindrical pressure-resistant tank 30 is provided. A heating jacket 31 is provided on a peripheral wall portion of the pressure-resistant tank 30, and high-temperature heating steam is supplied from the steam generation boiler 7 via a steam path 70 as described later.

A stirring shaft 32 extending in the longitudinal direction (left and right direction in FIG. 3) is provided inside the pressure-resistant tank 30 so as to be surrounded by the heating jacket 31 and rotated at a predetermined rotational speed by the electric motor 32a. It has become so. The stirring shaft 32 is provided with a plurality of stirring plates 32b spaced apart in the axial direction, thereby allowing the organic matter to be stirred and fed in the longitudinal direction of the pressure-resistant tank 30 after completion of the fermentation and drying. A hydraulic motor may be used instead of the electric motor 32a.

That is, at the top of one longitudinal direction side (left side in FIG. 2) of the pressure-resistant tank 30, an inlet 30a for the organic substance supplied from the transfer conveyor 21 is provided. While being heated by the rotation of the stirring shaft 32 as described above. Then, after being subjected to the fermentation and drying process for a predetermined time, it is discharged from the discharge part 30 b provided at the lower part of the pressure tank 30.

Although details are not illustrated, in the present embodiment, a passage for steam is also formed inside the stirring shaft 32 and the stirring plate 32b, and the steam for heating from the steam generation boiler 7 via the steam passage 70 is also formed here. Is to be supplied. Thereby, it can heat also from the inside, stirring the organic substance by the stirring shaft 32. Then, the drain water having the steam condensed therein is returned to the steam generation boiler 7 through the steam path 70.

In the upper part of the pressure-resistant tank 30, which heats the organic matter, a guide portion 30c for guiding the vapor generated from the heated organic matter to the condensing portion 33 is protruded. From here, the communication path 34 to the condensing portion 33 is opened and closed. A valve 34a is interposed. The condenser 33 includes a plurality of cooling pipes 33b supported by a pair of heads 33a, and a cooling water passage 80 is provided between the cooling pipes 33b and a cooling tower 8 described below.

That is, the cooling water which flows in the cooling pipe 33b in the condenser portion 33 and whose temperature is raised by heat exchange with the high temperature steam flows in the cooling water passage 80 as schematically shown by the arrows in FIG. It flows into the water receiving tank 81 of the cooling tower 8. The cooling tower 8 is provided with a pumping pump 82 for pumping the cooling water from the water receiving tank 81, and a nozzle 83 for injecting the pumped cooling water, and the cooling water injected from the nozzle 83 is flowing downstream 84 While flowing down, the temperature is lowered due to the air blowing from the fan 85 and flows into the water receiving tank 81 again.

The cooling water thus cooled by the cooling tower 8 is supplied by the cooling water pump 86, sent to the condenser 33 by the cooling water passage 80, and circulated again through the plurality of cooling pipes 33b. Then, after the temperature rises due to the heat exchange with the high temperature steam as described above, it flows again through the cooling water passage 80 and flows into the water receiving tank 81 of the cooling tower 8. That is, the cooling water circulates through the cooling water path 80 between the condenser 33 and the cooling tower 8.

Furthermore, in addition to the cooling water thus circulated, condensed water of steam generated from the organic matter heated in the condensing section 33 is also supplied to the cooling tower 8. That is, although not shown, a water collecting portion is provided below the condensing portion 33, and condensed water generated by heat exchange with high temperature steam as described above is collected. Further, a vacuum pump 36 is connected to the condensing section 33 via a communication passage 35 so that the pressure in the pressure resistant tank 30 is reduced.

That is, by the operation of the vacuum pump 36, air and condensed water are sucked out of the condensation section 33 through the communication passage 35, and further, the air in the pressure resistant tank 30 and the communication passage 34 and the guide portion 30c. Condensed water is drawn out. Thus, the condensed water is sucked from the condensation section 33 to the vacuum pump 36 and is led from the vacuum pump 36 to the water receiving tank 81 of the cooling tower 8 by the water conduit.

Thus, the condensed water led to the water receiving tank 81 of the cooling tower 8 contains the same microorganisms as those added to the organic matter in the pressure tank 30, and the odorous components and the like contained in the condensed water are thereby decomposed The odor does not escape to the outside of the tank. Further, the condensed water mixes with the cooling water in the water receiving tank 81, and is pumped up by the pumping pump 82 as described above, and is injected from the nozzle 83 and then cooled while flowing down the downstream portion 84.

In the present embodiment, the filler of the lower flow portion 84 where the cooling water and the condensed water flow is used as a carrier of the predetermined microorganism, and the condensed water which is cooled here and flows into the water receiving tank 81 is used. It will contain microorganisms.

-Operation of Fermentation Drying Equipment-
The organic substance contained in the pressure-resistant tank 30 is heated by the high temperature steam supplied to the heating jacket 31 (and the steam passage such as the stirring shaft 32). While being stirred, it is stirred as the stirring shaft 32 rotates. The temperature of the steam supplied from the steam generation boiler 7 is preferably, for example, about 140.degree.

Thus, the heating from the outside by the heating jacket 31 surrounding the inside of the pressure-resistant tank 30 and the heating from the inside by the stirring shaft 32 and the like are performed, and the temperature is effectively raised and stirred by the stirring shaft 32. In addition, since the pressure is reduced by the operation of the vacuum pump 36, the boiling point is lowered in the pressure tank 30, the evaporation of water is accelerated, and the fermentative drying is promoted.

In addition, it is preferable that one process is 2 hours, for example in the fermentation drying process by the fermentation drying apparatus 3, and the organic matter will be fermented first over 30 minutes. When the pressure in the tank 30 is reduced to -0.06 to -0.07 MPa (gauge pressure, hereinafter, the gauge pressure is omitted), the water temperature in the pressure tank 30 becomes 76 ° C to 69 ° C (saturated vapor temperature). Maintained. As a result, the organic matter is mainly fermented and decomposed by the following microorganisms.

Next, the organic matter in fermentation will be dried for 1.5 hours. Therefore, when the pressure in the pressure tank 30 is further reduced to -0.010 to -0.092 MPa, the water temperature in the tank is maintained at 42 to 46 ° C (saturated vapor temperature), and the drying of the organic matter is sufficiently promoted. .

In addition, SHIMOSE 1 is March 14, 2003 to FERM BP-7504 (Patent Microorganisms Depositary Center, Institute of Technology for Industrial Science and Technology, Institute of Industrial Technology, Research Institute for Biotechnological Research, Institute of Technology and Technology, Ibaraki Prefecture, Japan). (The one deposited internationally). In addition, SHIMOSE 2 is a microorganism belonging to FERM BP-7505 (as deposited internationally as in SHIMOSE 1), Pichiafarinosa resistant to a salt, and SHIMOSE 3 is a microorganism belonging to FERM BP-7506 (SHIFOSE 1 and Similarly, those deposited internationally) are microorganisms that belong to Staphylococcus (Staphylococcus).

Next, the procedure of the treatment of the organic matter containing harmful microorganisms according to the present embodiment will be described. First, as shown in the flowchart of FIG. Load into the receiving hopper 1 Thereafter, the lid of the input port 30a of the pressure tank 30 of the fermentation and drying apparatus 3 is opened, the organic substance in the receiving hopper 1 is transported by the transport conveyor 2, and the organic substance is input from the input port 30a. Then, the lid of the inlet 30a is closed, and the on-off valve 34a in the communication passage 34 from the guide portion 30c of the pressure tank 30 to the condensation portion 33 is also closed to seal the inside of the pressure tank 30 under atmospheric pressure.

Next, in the sterilization step (step S2), the inside of the pressure-resistant tank 30 is maintained at high temperature and pressure for a predetermined time to kill and sterilize harmful bacteria such as normal bacteria and the virus. Therefore, the lid of the inlet 30a is closed, and the open / close valve 34a in the communication passage 34 from the guide portion 30c of the pressure tank 30 to the condensation portion 33 is closed.

Then, the heating steam is supplied from the steam generation boiler 7 to the pressure tank 30 (such as the heating jacket 31). By closing the on-off valve 34a of the communication passage 34 in this manner, the condenser unit 33, the vacuum pump 36, etc. are shut off, the pressure resistant tank 30 is sealed, and the inside becomes high temperature and high pressure.

Specifically, in the above-mentioned sterilization step, harmful microorganisms in the organic matter are killed by maintaining the temperature in the pressure tank 30, for example, at about 140 ° C. and the pressure, for example, at about 0.3 MPa for about 8 to 10 minutes. It can be made sterile. For example, the temperature may be set to about 120 ° C., and the pressure may be set to, for example, about 0.2 MPa and maintained for about 20 minutes.

After sterilizing the inside of the pressure tank 30, the open / close valve 34a is opened to open the communication passage 34 from the guide portion 30c to the condensing portion 33, and the vacuum pump 36 is operated to discharge air from the condensing portion 33. And suck out the condensed water. As a result, the pressure in the pressure tank 30 is reduced via the communication passage 34 and the guide portion 30 c, and the boiling point of water is lowered to promote evaporation, and the latent heat thereof reduces the temperature in the pressure tank 30.

As a result, the temperature in the pressure-resistant tank 30 can be reduced more quickly than in the case of natural heat dissipation, and the processing time can be shortened. Then, when the temperature in the pressure resistant tank 30 decreases to some extent, the process proceeds to step S3, and the operation of the vacuum pump 36 is stopped, and the air release valve 35a of the communication passage 35 between the vacuum pump 36 and the condenser 33 is stopped. open.

Then, the outside air flows from the atmosphere release valve 35a into the communication passage 35, and the pressure in the condensation portion 33, the communication passage 34, the guide portion 30c, and the pressure-resistant tank 30 quickly becomes atmospheric pressure. Further, due to the flow of the gas at that time, a part of the microorganisms remaining in the condensation section 33 is brought into the pressure tank 30. Moreover, since the inside of the pressure-resistant tank 30 is atmospheric pressure, it is also conceivable to open the insertion port 30a and to input a predetermined microorganism.

Thus, in step S 3, after a predetermined microorganism is added to the organic matter in the pressure tank 30, the air release valve 35 a is closed to seal the inside of the pressure tank 30. Then, as described above with reference to FIG. 2, the inside of the pressure-resistant tank 30 is heated under reduced pressure to promote fermentation and drying of the organic substance contained therein (fermentation drying step: step S4). That is, the heating steam is supplied from the steam generation boiler 7 to heat the inside of the pressure resistant tank 30.

Then, the inside of the pressure tank 30 is heated by the heating steam, the stirring shaft 32 is rotated at a predetermined rotation speed (for example, about 8 rpm), and the pressure inside the pressure tank 30 is reduced by the operation of the vacuum pump 36. As a result, the temperature in the pressure tank 30 becomes the optimum activity environment of the microorganism, and the harmful microorganism is killed as described above, so that the fermentation and drying of the organic matter is suitably promoted.

Thus, the vacuum pump 36 is temporarily stopped when a predetermined time (for example, about 2 hours) elapses while maintaining the temperature and pressure in the pressure-resistant tank 30. At this time, the dry matter is reduced in volume. Then, it is determined in step S5 whether or not this fermentation / drying step has been repeated a preset number of times, and if a negative determination (NO), the process returns to step S1.

In this way, the organic substance is charged into the pressure tank 30, and by repeating the fermentation / drying step a set number of times, a large amount of organic substance can be sufficiently fermented and dried. Then, if an affirmative determination (YES) is made in step S5, the process proceeds to step S6 to stop the operation of the vacuum pump 36 and the steam generation boiler 7 while reversing the stirring shaft 32 and opening the lid of the discharge unit 30b. The dry matter is discharged from the tank 30 (discharge step). Thereafter, the dried matter is stored in the hopper 39 through the input hopper 37 and the conveying conveyor 38, and is appropriately burned in the combustion furnace 41 through the dried matter supply device 40.

Step S2 of the flow in FIG. 3 corresponds to a sterilization step in which an organic substance to be treated is contained in the pressure-resistant tank 30, heated to a predetermined temperature or higher, and maintained for a predetermined time to perform sterilization. Corresponds to an addition step of adding a predetermined microorganism to the organic matter in the pressure tank 30 after the sterilization step. Step S4 corresponds to a fermentation and drying step of heating the organic matter under a reduced pressure while heating to a predetermined temperature range and fermenting and drying the organic matter using microorganisms to obtain a reduced-volume dried product.

In the present embodiment, in the sterilization step of step S2, the open / close valve 34a of the communication passage 34 is closed to heat the inside of the pressure tank 30, and then the vacuum pump 36 is operated before proceeding to the addition step of step S3. The pressure in the pressure tank 30 is reduced. Then, in the subsequent addition step, the open / close valve 34a and the atmosphere release valve 35a are opened to introduce the outside air into the communication passage 35, and the microbes are taken into the pressure tank 30 from the condenser 33 by the flow of gas at that time. .

Therefore, according to the method for treating an organic substance containing harmful microorganisms according to the present embodiment, the pressure inside the pressure tank 30 containing the organic substance is depressurized using the known fermentation / drying apparatus 3 to lower the boiling point of water. The drying can be accelerated by efficiently evaporating the water at a very low temperature. By lowering the temperature in this manner, the predetermined microorganism to be added can be activated to promote the fermentation of the organic matter.

Furthermore, in the present embodiment, harmful microorganisms can be killed by heating and sterilizing the organic substance added to the pressure-resistant tank 30 as described above by heating the organic substance to a predetermined temperature or higher. . Therefore, while being able to carry out the fermentation drying process of the livestock etc. which were polluted with harmful microorganisms, while realizing the activity optimum environment of the predetermined microorganism added for that, fermentation of the organic matter is possible as much as possible by the function of this microorganism. Promote.

In addition, in the present embodiment, the vacuum pump 36 is operated after the above-mentioned sterilization step, and once the pressure in the pressure tank 30 is reduced, the air release valve 35a is opened, and the space between the vacuum pump 36 and the condenser 33 is opened. Outside air is introduced into the communication passage 35 of FIG. As a result, the outside air having flowed into the communication passage 35 is sucked into the pressure-resistant tank 30 from the condensing portion 33 through the communication passage 34 and the guide portion 30 c.

Then, due to the flow of the outside air, a part of the microorganisms remaining in the condensation section 33 can be added to the organic matter in the pressure tank 30. That is, the predetermined microorganism can be added to the organic substance that has been subjected to sterilization processing inside the pressure port 30a while the lid of the inlet 30a of the pressure tank 30 is closed.

The presently disclosed embodiments are illustrative in all respects and not restrictive of interpretation. The technical scope of the present invention is not interpreted only by the embodiments described above, but is defined based on the description of the claims. Further, the technical scope of the present invention includes all modifications within the meaning and scope equivalent to the claims.

Furthermore, as described above with reference to FIG. 3, in the above embodiment, after the sterilization step (S2) of subjecting the organic matter in the pressure tank 30 to sterilization, the pressure in the pressure tank 30 is reduced by the operation of the vacuum pump 36, Although the reduction in temperature is promoted, the invention is not limited to this, and the temperature in the pressure tank 30 may be reduced by natural heat radiation, and the pressure in the pressure tank 30 is not necessarily reduced to the atmospheric pressure. There is no need to add microorganisms.

Further, in the step of adding microorganisms (S3), the atmosphere release valve 35a is opened to allow the outside air to flow into the communication passage 35 between the condenser 33 and the vacuum pump 36, and the gas flows at that time to the condenser 33. The remaining microorganisms can be added to the organic substances in the pressure tank 30, but the invention is not limited thereto. For example, the lid of the inlet 30a is opened to add the microorganisms to the organic substances in the pressure tank 30. May be

Furthermore, the on-off valve 34 a may not necessarily be closed in the sterilization step (S 2), and the on-off valve 34 a may not be provided in the communication passage 34 from the guide portion 30 c of the pressure tank 30 to the condensation portion 33. Similarly, it is not necessary to attach the air release valve 35a opened in the atmospheric pressure step (S3) to the communication passage 35 between the condenser 33 and the vacuum pump 36, and may be attached to the communication passage 34, for example.

Further, in the above embodiment, high temperature steam is supplied from the steam generation boiler 7 in order to heat the inside of the pressure resistant tank 30, but the heating medium is not limited to steam, and may be oil. In addition, the dried product may be crushed or metal may be removed after the treatment by the fermentation / drying apparatus 3.

This application claims priority based on Japanese Patent Application No. 2017-167129 filed in Japan on August 31, 2017. By reference to this, the entire content of which is incorporated into the present application.

The present invention can treat even organic substances contaminated by harmful microorganisms when fermenting using microorganisms while heating organic substances under reduced pressure using a fermentation / drying apparatus, and the industrial applicability is high.

3 Fermentation dryer 30 Pressure-resistant tank (sealed container)
33

Condensing part

34, 35 Communication path for pressure tank and vacuum pump 34a On-off valve 35a Atmospheric release valve 36 Vacuum pump

Claims

A sterilization step of sterilizing the organic matter by storing the organic matter containing harmful microorganisms in a sealed container and heating the organic matter to a predetermined temperature or higher for a predetermined time;
An addition step of adding a predetermined microorganism to the organic substance in the closed container after the sterilization step;
The organic substance in the closed container is stirred while heating to a predetermined temperature range under reduced pressure, and the organic substance is fermented using the predetermined microorganism to obtain a reduced-volume dried product. What is claimed is: 1. A method of treating organic matter containing harmful microorganisms characterized in that
In the processing method according to claim 1,
A vacuum pump is connected to the sealed container via a communication passage to reduce the pressure inside the container.
After the sterilization step, the vacuum pump is operated before the addition step to decompress the inside of the closed container, and a method of treating an organic substance containing harmful microorganisms.
In the method for treating an organic substance containing harmful microorganisms according to claim 2,
In the communication passage, a condensation unit for liquefying the vapor generated in the closed container in the fermentation and drying step, and an atmosphere opening valve capable of opening the atmosphere between the condensation unit and the vacuum pump are interposed.
In the addition step, the atmosphere release valve is opened to introduce outside air into the communication passage, and the flow of the outside air causes harmful microorganisms to be introduced into the closed container from the condensing unit. How to treat organics.
In the method for treating an organic substance containing harmful microorganisms according to claim 3,
In the communication passage, an open / close valve that can be opened and closed is interposed between the condensing unit and the sealed container,
In the sterilization step, the inside of the closed container is heated in a state in which the on-off valve is closed, while in the addition step, both the air release valve and the on-off valve are opened. .
An organic substance containing harmful microorganisms is contained in a closed container, and stirred while heating to a predetermined temperature range under reduced pressure, and the organic substance is fermented using the predetermined microorganism to obtain a reduced-volume dried product ,
A vacuum pump connected to the sealed container via a communication passage to reduce the pressure inside the container;
A condensing unit interposed in the communication passage for liquefying the vapor generated in the closed container;
An air release valve capable of air release between the condenser and the vacuum pump;
An open / close valve that can be opened and closed between the condensing unit and the closed container;
An apparatus for treating organic matter containing harmful microorganisms, comprising: