JP2019042655A - Processing method and processing device of organic matter containing harmful microorganism - Google Patents

Abstract

To provide a processing method and a processing device of organic matter containing harmful microorganisms where the activity of the microorganisms and the like is suppressed, an activity optimal environment of the microorganisms is realized and the organic matter contaminated with the harmful microorganisms can be processed when wastes (processing object) such as the organic matter are fermented and dried using the added microorganisms while being heated in reduced pressure using a fermentation dryer 3.SOLUTION: A processing method of organic matter containing harmful microorganisms includes: a step (step S2) performing sterilization treatment by storing the organic matter containing the harmful microorganisms in a pressure tank 30 (closed container), being heated to a prescribed temperature or higher and being kept for a prescribed time; a step (step S3) adding prescribed microorganisms to the organic matter; and a step (step S4) stirring the pressure tank 30 while heating in a prescribed temperature range in reduced pressure, fermenting and drying the organic matter using the prescribed microorganisms and obtaining dried matter decreased in volume.SELECTED DRAWING: Figure 3

Description

  The present invention relates to the treatment of organic matter containing harmful microorganisms, and in particular, when organic matter containing harmful microorganisms is contained in the organic matter, organic matter containing harmful microorganisms discarded in airports and hospitals is within the area. It is suitable when it has to be processed.

  Conventionally, for example, waste (general waste) discharged from ordinary households and industrial waste from various offices are treated as fuel after drying or fermented using microorganisms. It is known that it is used as compost or feed after being used. However, the object of such treatment contains various organic substances such as garbage, paper waste, human waste, domestic wastewater, animal and vegetable residues, sludge, etc., and since it has a high moisture content, it should be sufficiently dried for treatment. It is necessary.

  In this regard, the inventors of the present application promote organic fermentation by containing organic matter such as garbage in a sealed container and adding and stirring a predetermined microorganism while heating to a predetermined temperature range under reduced pressure. In addition, a patent application has already been filed for an apparatus (fermentation drying apparatus) that can efficiently remove moisture and dry it.

  For example, in the fermentation and drying apparatus described in Patent Document 1, since the boiling point of water is reduced by reducing the pressure in the sealed container, the death of microorganisms due to temperature rise can be prevented. In addition, evaporation of moisture contained in the organic matter in the interior is promoted, and the drying time is shortened.

JP 2007-319738 A

  However, in general, various microorganisms are included in the waste. Even if an attempt is made to promote fermentation of organic matter by adding a predetermined microorganism as in the conventional example (Patent Document 1), it is suitable for its function. In many environments, the action of microorganisms other than those added, that is, the microorganisms contained in the waste is often activated. If it becomes like this, the function of the added microorganism will be inhibited and it will become impossible to accelerate | stimulate fermentation of organic substance as it aimed.

  In recent years, harmful microorganisms such as viruses that can infect not only livestock but also humans, such as bird flu, are known. Carcasses of livestock contaminated with such harmful microorganisms have spread infection. To prevent it, there is a fact that it must be buried in the ground under strict management. Furthermore, since organic substances discarded in airports and hospitals may be contaminated with harmful microorganisms, there are circumstances that must be disposed of in the area. Here, harmful microorganisms refer to viruses, bacteria, yeasts, molds, protozoa, parasites, and the like that are harmful to humans, animals and plants, and the environment.

  In view of such actual conditions, the object of the present invention is to kill microorganisms contained in an object when the subject is fermented and dried using a known fermentation drying apparatus, and then add the microorganisms added. By realizing an optimal environment for activities, it is possible to treat organic matter contaminated with or harmful organic matter under atmospheric pressure.

  In order to solve the above-described problems, the treatment method of the present invention is a sterilization method in which an organic substance containing harmful microorganisms is contained in a sealed container, heated to a predetermined temperature or higher and maintained for a predetermined time, thereby sterilizing the organic substance. And a step of adding a predetermined microorganism to the organic matter in the sealed container after the sterilization step, and then stirring the organic matter in the sealed container while heating to a predetermined temperature range under reduced pressure, A fermentation drying step of fermenting and drying the organic matter using the predetermined microorganism to obtain a reduced dried product.

  By this method, first, organic substances are stored in a sealed container, and heated to a predetermined temperature or higher in a sterilization process and maintained for a predetermined time, whereby harmful microorganisms such as bacteria and viruses can be killed. Thereafter, a predetermined microorganism is added, and an organic substance such as a carcass contaminated with harmful microorganisms can be processed in the fermentation drying process by realizing an optimum environment for the activity.

  In order to kill harmful microorganisms such as bacteria and viruses contained in organic substances, the inside of the sealed container is maintained at 130 ° C or higher for about 10 minutes (at least 120 ° C or higher, in this case about 20 minutes). However, in such a high temperature state, predetermined microorganisms for fermentation drying are also killed. Therefore, after the sterilization step, the temperature in the sealed container is set before starting the fermentation drying step. It is preferable that the predetermined microorganism is added under atmospheric pressure after being lowered.

  Therefore, when a vacuum pump for decompressing the inside of the sealed container is connected via a communication path, the vacuum pump is operated after the sterilization step and before the addition step, What is necessary is just to decompress the inside of a container. If it carries out like this, the temperature can be rapidly reduced by decompressing the inside of an airtight container.

  In that case, the communication path may be provided with a condensing part for liquefying (condensing) the vapor generated from the organic matter in the sealed container in the fermentation drying process. Microorganisms remain. Therefore, it is preferable that an atmosphere release valve capable of opening the atmosphere between the condensing unit and the vacuum pump is provided, and in the addition step, the atmosphere release valve is opened to introduce outside air into the communication path. .

  In this way, the outside air that has flowed into the communication path from the opened air release valve flows through the condensing part and is sucked into the sealed container, and by the flow, the predetermined microorganisms enter the sealed container from the condensing part. Incorporated. Therefore, it is possible to add a predetermined microorganism to the organic matter after sterilization without opening the inlet of the organic matter provided in the sealed container.

  Further, it is preferable that an opening / closing valve capable of opening / closing between the condensing part and the sealed container is provided in the communication path, and that the inside of the sealed container is heated with the opening / closing valve closed in the sterilization step. . If it carries out like this, the temperature in the airtight container can be raised efficiently by heating only the space by the side of the airtight container rather than the on-off valve. On the other hand, in the addition step, both the air release valve and the open / close valve may be opened.

  In other words, the present invention is an apparatus for treating organic matter containing harmful microorganisms, which contains the organic matter in a hermetically sealed container and is stirred while heating to a prescribed temperature range under reduced pressure. Fermentation drying apparatus for fermenting and drying organic matter to obtain a reduced volume dried product, a vacuum pump connected to the hermetic container via a communication path for decompressing the inside thereof, installed in the communication path, A condensing part for liquefying the vapor generated in the sealed container, an air opening valve that can be opened to the atmosphere between the condensing part and the vacuum pump, and an open / close valve that can be opened and closed between the condensing part and the sealed container; It is equipped with. If the processing apparatus configured as described above is used, the above-described processing method can be suitably realized.

  According to the treatment method and the treatment apparatus of the present invention, organic substances containing harmful microorganisms are stored in a sealed container, killed by sterilization treatment at high temperature and high pressure, and heated under reduced pressure to use predetermined microorganisms. Thus, fermentation of organic matter can be promoted and drying can be promoted. Thus, organic matter such as carcasses of livestock contaminated with harmful microorganisms can also be fermented and dried.

It is a schematic block diagram of the whole 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 substance.

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

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

-Fermentation drying device-
The fermentation drying apparatus 3 is a known apparatus described in Patent Document 1 and the like. As described below, the organic substance to be treated is stirred while being heated to a predetermined temperature range under reduced pressure, and microorganisms are used. The organic matter is fermented and dried using the above to obtain a dried product with a reduced volume.

  As schematically shown in FIG. 2, the fermentation and drying apparatus 3 is formed as an airtight container so as to keep the interior at or above atmospheric pressure as a sealed container containing the organic matter supplied by the transport conveyor 21 as described above. A cylindrical pressure-resistant tank 30 is provided. A heating jacket 31 is provided on the peripheral wall portion of the pressure tank 30 so that high-temperature heating steam is supplied from the steam generation boiler 7 through a steam path 70 as will be described later.

  Further, 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 is rotated at a predetermined rotational speed by the electric motor 32a. It has become so. The agitation shaft 32 is provided with a plurality of agitation plates 32b spaced apart in the axial direction thereof, whereby the organic matter can be agitated and sent in the longitudinal direction of the pressure-resistant tank 30 after completion of fermentation drying. Further, 32a may use a hydraulic motor.

  In other words, an organic material inlet 30a supplied from the transfer conveyor 21 is provided on the upper side of the pressure tank 30 in the longitudinal direction (left side in FIG. 2). As described above, the agitation is performed by the rotation of the agitation shaft 32 while being heated. And after carrying out the fermentation drying process for the predetermined time, it discharges | emits from the discharge part 30b provided in the lower part of the pressure-resistant tank 30. FIG.

  Although not shown in detail, in the present embodiment, a steam passage is also formed inside the agitation shaft 32 and the agitation plate 32b, and the steam for heating from the steam generating boiler 7 is also provided here via the steam path 70. Is to be supplied. Thereby, it can heat also from the inner side, stirring an organic substance with the stirring shaft 32. FIG. Then, the drain water condensed by the steam is returned to the steam generating boiler 7 through the steam path 70.

  A guide part 30c for guiding the vapor generated from the heated organic substance to the condensation part 33 protrudes from an upper part of the pressure tank 30 for heating the organic substance, and the communication path 34 from here to the condensation part 33 opens and closes. A valve 34a is interposed. The condensing unit 33 includes a plurality of cooling pipes 33b supported by a pair of heads 33a, and a cooling water path 80 is provided between the cooling pipes 33b and the cooling tower 8 described below.

  That is, the cooling water that has circulated in the cooling pipe 33b in the condenser 33 and increased in temperature by heat exchange with the high-temperature steam is circulated through the cooling water path 80 as schematically shown by arrows in FIG. It flows into the water receiving tank 81 of the cooling tower 8. The cooling tower 8 is provided with a pump 82 for pumping cooling water from the water receiving tank 81, and a nozzle 83 for injecting the pumped cooling water. When the air flows down, the temperature is lowered by receiving air from the fan 85 and flows into the water receiving tank 81 again.

  Thus, the cooling water cooled by the cooling tower 8 is sent by the cooling water pump 86, sent to the condensing part 33 by the cooling water path 80, and distribute | circulates the inside of the several cooling pipe 33b again. Then, after the temperature rises due to heat exchange with the high-temperature steam as described above, it flows through the cooling water passage 80 again and flows into the water receiving tank 81 of the cooling tower 8. That is, the cooling water circulates in the cooling water path 80 between the condensing unit 33 and the cooling tower 8.

  Further, in addition to the cooling water circulating in this way, the cooling tower 8 also injects condensed water of steam generated from the organic matter heated in the condensing unit 33. That is, although not shown, a water collecting part is provided below the condensing part 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 unit 33 via a communication path 35 so as to depressurize the pressure tank 30.

  That is, by the operation of the vacuum pump 36, air and condensed water are sucked out from the condensing portion 33 through the communication passage 35, and further, the air in the pressure tank 30 and the air through the communication passage 34 and the guide portion 30c. Condensed water is sucked out. In this way, the condensed water is sucked out from the condensing unit 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 through the water conduit.

  In this way, 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, so that the odor components and the like contained in the condensed water are decomposed. As a result, the odor does not diverge outside the tank. Further, this condensed water is mixed with the cooling water in the water receiving tank 81, pumped up to the pumping pump 82 as described above, injected from the nozzle 83, and then cooled while flowing down the lower part 84.

  In the present embodiment, the filler in the lower part 84 where the cooling water and the condensed water flow down is used as the carrier for the predetermined microorganism, and the condensed water flowing into the water receiving tank 81 after cooling is used here. Microorganisms are included.

-Operation of fermentation drying equipment-
The operation of the fermentation drying apparatus 3 configured as described above will be described. The organic matter accommodated in the pressure tank 30 is heated by high-temperature steam supplied to the heating jacket 31 (and the steam passage such as the stirring shaft 32). While being stirred, the agitation is performed as the agitation shaft 32 rotates. The temperature of the steam supplied from the steam generating boiler 7 is preferably about 140 ° C., for example.

  In this way, the heating jacket 31 surrounding the inside of the pressure-resistant tank 30 receives the heating from the outside and the heating from the inside by the stirring shaft 32 and the like, so that the temperature is effectively increased and the stirring shaft 32 stirs. 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 moisture is accelerated, and the fermentation drying is promoted.

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

  Next, the organic matter during fermentation is dried over 1.5 hours. Therefore, when the pressure in the 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 steam temperature), and the drying of organic matter is sufficiently accelerated. .

  In addition, SHIMOSE 1 is an international deposit on March 14, 2003 in FERM BP-7504 (Ministry of Economy, Trade and Industry, National Institute of Advanced Industrial Science and Technology (AIST)) In addition, SHIMOSE 2 is a microorganism belonging to FERM BP-7505 (which was deposited internationally in the same manner as SHIMOSE 1) and Pichiafarinosa which is resistant to salt, and SHIMOSE 3 is FERM BP -7506 (those deposited internationally as in SHIMOSE 1), a microorganism belonging to Staphylococcus.

  Next, the procedure of processing organic matter containing harmful microorganisms according to the present embodiment will be described. As shown in the flowchart of FIG. 3 as an example, first, in step S1, organic matter such as livestock that has been contaminated and killed by harmful microorganisms is removed. Put in the receiving hopper 1. Thereafter, the lid of the inlet 30a of the pressure tank 30 of the fermentation drying apparatus 3 is opened, the organic matter in the receiving hopper 1 is conveyed by the conveyor 2, and the organic matter is introduced from the inlet 30a. And while closing the lid | cover of the inlet 30a, the opening-and-closing valve 34a in the communication path 34 from the guide part 30c of the pressure-resistant tank 30 to the condensation part 33 is also closed, and the inside of the pressure-resistant tank 30 is sealed in atmospheric pressure state.

  Next, in the sterilization process (step S2), the inside of the pressure resistant tank 30 is maintained at a high temperature and high pressure for a predetermined time to kill and sterilize harmful microorganisms such as normal bacteria and the virus. For this purpose, the lid of the inlet 30a is closed, and the open / close valve 34a in the communication path 34 from the guide part 30c of the pressure tank 30 to the condensing part 33 is closed.

  Then, the steam for heating is supplied from the steam generating boiler 7 to the pressure resistant tank 30 (heating jacket 31 or the like). By closing the open / close valve 34a of the communication passage 34 in this manner, the condenser 33 and the vacuum pump 36 are shut off, the pressure-resistant tank 30 is hermetically sealed, and the inside is at high temperature and pressure.

  Specifically, in the sterilization step, for example, the temperature in the pressure-resistant tank 30 is maintained at about 140 ° C. and the pressure is maintained at, for example, about 0.3 MPa for about 8 to 10 minutes, thereby killing harmful microorganisms in the organic matter. And aseptic conditions can be created. For example, the temperature may be about 120 ° C., and the pressure may be about 0.2 MPa, for example, and maintained for about 20 minutes.

  After the inside of the pressure tank 30 is sterilized, 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 remove air from the condensing portion 33. And suck out condensed water. As a result, the inside of the pressure tank 30 is depressurized through the communication path 34 and the guide portion 30c, and the boiling point of water is lowered, whereby evaporation is promoted and the temperature in the pressure tank 30 is lowered by the latent heat.

  As a result, the temperature in the pressure-resistant tank 30 can be quickly reduced as compared with natural heat dissipation, and the processing time can be shortened. When the temperature in the pressure tank 30 is lowered to some extent, the process proceeds to step S3, where 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 condensing unit 33. open.

  If it carries out like this, external air will flow in into the communicating path 35 from the air release valve 35a, and the inside of the condensation part 33, the communicating path 34, the guide part 30c, and the pressure | voltage resistant tank 30 will become atmospheric pressure rapidly. In addition, due to the gas flow at that time, a part of the microorganisms remaining in the condensing unit 33 is brought into the pressure tank 30. In addition, since the pressure tank 30 is at atmospheric pressure, it may be possible to open the inlet 30a and input a predetermined microorganism.

  In this way, in step S3, after adding a predetermined microorganism to the organic matter in the pressure tank 30, the atmosphere release valve 35a is closed to seal the pressure tank 30 inside. Then, as described above with reference to FIG. 2, the inside of the pressure tank 30 is heated under reduced pressure to promote the fermentation and drying of the organic matter housed therein (fermentation drying step: step S4). That is, heating steam is supplied from the steam generating boiler 7 to heat the inside of the pressure 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 inside of the pressure tank 30 is depressurized by the operation of the vacuum pump 36, As a result, the temperature in the pressure-resistant tank 30 becomes an optimum environment for microbial activity, and the harmful microorganisms are killed as described above.

  In this way, 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 tank 30. At this time, the dry matter has been reduced in volume. Then, in step S5, it is determined whether or not the fermentation drying process has been repeated a preset number of times. If the determination is negative (NO), the process returns to step S1.

  Thus, a large amount of organic matter can be sufficiently fermented and dried by introducing the organic matter into the pressure tank 30 and repeating the fermentation drying step a set number of times. If an affirmative determination (YES) is made in step S5, the operation proceeds to step S6 to stop the operation of the vacuum pump 36 and the steam generating boiler 7, while the agitation shaft 32 is reversed, the lid of the discharge unit 30b is opened, and the pressure resistance is increased. Dry matter is discharged from the tank 30 (discharge step). After that, these dried products are stored in the hopper 39 through the charging hopper 37 and the conveying conveyor 38, and are combusted in the combustion furnace 41 through the dried product supply device 40 as appropriate.

  Step S2 of the flow of FIG. 3 corresponds to a sterilization process in which an organic substance as a processing target is stored in the pressure tank 30, heated to a predetermined temperature or higher and maintained for a predetermined time, and a sterilization process is performed. However, this 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 drying process in which the organic matter is stirred while being heated to a predetermined temperature range under reduced pressure, and the organic matter is fermented and dried using microorganisms to obtain a reduced dried product.

  In this embodiment, in the sterilization process of step S2, the open / close valve 34a of the communication path 34 is closed to heat the inside of the pressure-resistant tank 30, and then the vacuum pump 36 is operated before moving to the addition process of step S3. The pressure tank 30 is depressurized. In the subsequent addition step, the open / close valve 34a and the air release valve 35a are opened to introduce outside air into the communication passage 35, and microorganisms are taken into the pressure-resistant tank 30 from the condensing unit 33 by the gas flow at that time. .

  Therefore, according to the processing method of the organic matter containing harmful microorganisms according to the present embodiment, the pressure-reducing tank 30 containing the organic matter is decompressed and the boiling point of the water is lowered by using the known fermentation drying apparatus 3. Drying can be promoted by efficiently evaporating water at a low temperature. By lowering the temperature in this way, the predetermined microorganism to be added can be activated and the fermentation of organic matter can be promoted.

  Furthermore, in this embodiment, before promoting the fermentative drying of the organic substance put into the pressure tank 30 as described above, harmful microorganisms can be killed by heating and sterilizing the organic substance to a predetermined temperature or higher. . Therefore, livestock carcasses contaminated with harmful microorganisms can be fermented and dried, and the optimum environment for the activity of the specified microorganisms added for this purpose is achieved. Can be promoted.

  In addition, in the present embodiment, after the sterilization step, the vacuum pump 36 is operated, and after the pressure tank 30 is depressurized, the atmosphere release valve 35a is opened, and the vacuum pump 36 and the condensing unit 33 are separated. The outside air is introduced into the communication path 35. As a result, the outside air that has flowed into the communication path 35 is sucked into the pressure-resistant tank 30 from the condensation section 33 via the communication path 34 and the guide section 30c.

  A part of the microorganisms remaining in the condensing unit 33 can be added to the organic matter in the pressure tank 30 by the flow of the outside air. That is, the predetermined microorganism can be added to the organic matter after being sterilized while the cover of the inlet 30a of the pressure tank 30 is closed.

  The disclosed embodiments are examples in all respects, and do not serve as a basis for limited interpretation. The technical scope of the present invention is not interpreted only by the above-described embodiments, but is defined based on the description of the scope of claims. The technical scope of the present invention includes meanings equivalent to the scope of claims and all modifications within the scope.

  Furthermore, as described above with reference to FIG. 3, in the above-described embodiment, after the sterilization step (S <b> 2) for sterilizing the organic matter in the pressure tank 30, the pressure in the pressure tank 30 is reduced by operating the vacuum pump 36. Although the temperature reduction is promoted, the temperature is not limited to this, and the temperature in the pressure tank 30 may be lowered by natural heat dissipation, or after the pressure tank 30 is always at atmospheric pressure. There is no need to add microorganisms.

  Further, in the step of adding microorganisms (S3), the air release valve 35a is opened to allow outside air to flow into the communication path 35 between the condensing unit 33 and the vacuum pump 36, and the condensing unit 33 is caused to flow by the gas flow at that time. The remaining microorganisms can be added to the organic matter in the pressure tank 30, but the present invention is not limited to this. For example, the lid of the inlet 30a is opened to add the microorganism to the organic matter in the pressure tank 30. May be.

  Furthermore, in the sterilization step (S2), the opening / closing valve 34a is not necessarily closed, and the opening / closing valve 34a is not necessarily provided in the communication path 34 from the guide portion 30c of the pressure-resistant tank 30 to the condensing portion 33. Similarly, the air release valve 35a that is opened in the atmospheric pressure step (S3) need not be provided in the communication path 35 between the condenser 33 and the vacuum pump 36, and may be provided in the communication path 34, for example.

  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 but may be oil. Further, after the treatment by the fermentation drying apparatus 3, the dried product may be crushed or the metal may be removed.

  The present invention can treat organic matter contaminated by harmful microorganisms when fermenting using microorganisms while heating the organic matter under reduced pressure using a fermentation drying apparatus. high.

3 Fermentation dryer 30 Pressure-resistant tank (sealed container)
33 Condensing section 34, 35 Pressure-resistant tank and vacuum pump communication path 34a Open / close valve 35a Atmospheric release valve 36 Vacuum pump

Claims (5)

A sterilization step of sterilizing the organic matter by storing the organic matter containing harmful microorganisms in a sealed container, heating it to a predetermined temperature or higher and maintaining it for a predetermined time;
An addition step of adding a predetermined microorganism to the organic matter in the sealed container after the sterilization step;
A fermentation drying step of stirring the organic matter in the sealed container while heating to a predetermined temperature range under reduced pressure and fermenting the organic matter using the predetermined microorganism to obtain a reduced dry matter. A method for treating organic matter containing harmful microorganisms. The processing method according to claim 1,
A vacuum pump is connected to the sealed container through a communication path in order to decompress the inside thereof.
A method for treating an organic matter containing harmful microorganisms, wherein the vacuum pump is operated after the sterilization step and before the addition step to decompress the inside of the sealed container. In the processing method of the organic substance containing the harmful microorganisms according to claim 2,
In the communication path, a condensing part for liquefying the steam generated in the closed vessel in the fermentation drying step, and an air release valve capable of opening the air between the condensing part and the vacuum pump are interposed,
In the adding step, the atmosphere release valve is opened to introduce outside air into the communication path, and the predetermined microorganisms are taken into the sealed container from the condensing unit by the flow of the outside air. . In the processing method of the organic substance containing the harmful microorganisms according to claim 3,
The communication passage is provided with an open / close valve that can be opened and closed between the condensing unit and the sealed container,
In the sterilization step, the inside of the sealed container is heated with the open / close valve closed, and in the adding step, both the air release valve and the open / close valve are opened. A fermentation and drying apparatus that contains organic matter containing harmful microorganisms in a sealed container, stirs while heating to a predetermined temperature range under reduced pressure, ferments the organic matter using predetermined microorganisms, and obtains a reduced dry matter; ,
A vacuum pump connected to the sealed container via a communication path to decompress the inside thereof;
A condensing part interposed in the communication path for liquefying the steam generated in the sealed container;
An air release valve that can be opened to the atmosphere between the condenser and the vacuum pump;
An open / close valve that can be opened and closed between the condensing unit and the sealed container;
An apparatus for treating organic matter containing harmful microorganisms, comprising:

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