JP3595749B2 - Fermentation processing equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fermentation treatment apparatus for producing organic fertilizer by fermenting organic sludge generated in a sewage treatment plant, a septic tank, and an agricultural settlement wastewater treatment facility.
[0002]
[Prior art]
BACKGROUND ART Conventionally, organic sludge typified by sewage sludge and livestock sludge has been treated such as landfilling after dehydration, incineration, and ocean dumping. However, due to the shortage of disposal sites, disposal costs are increasing. In addition, landfill and ocean dumping are not appropriate methods for global environmental protection.
[0003]
In general, since organic sludge contains biological bacteria, it can be reused as a biomass resource. As one of the methods, a method of fermenting organic sludge and reducing it to green lands and agricultural lands as organic fertilizer has attracted attention in recent years.
[0004]
As a method of fermenting organic sludge and turning it into organic fertilizer, the organic sludge generated in sewage sludge, septic tanks and agricultural settlement wastewater treatment facilities is dewatered and dried in a sludge dryer, and the water content is about 60% suitable for fermentation by microorganisms. There is a method in which the fermentation is adjusted, stored in a fermentation room having good air permeability, and fermented.
[0005]
[Problems to be solved by the invention]
However, the conventional method as described above has a problem that it takes about one month to ferment organic sludge and convert it to organic fertilizer. In addition, sulfur compounds such as mercaptan and odor components such as ammonia and nitrogen oxides that emit a strong odor accompanying the fermentation of organic sludge are generated, which lowers the efficiency of workers working in the fermentation chamber and reduces the surrounding environment. There is a problem of worsening.
[0006]
The present invention has been made in view of such points, and promotes the fermentation of organic sludge, shortens the time required for fertilization, and discharges odor components generated during fermentation to the outside. It is an object of the present invention to provide a fermentation treatment apparatus that can prevent such a phenomenon.
[0007]
[Means for Solving the Problems]
The present invention has an air supply port and an exhaust port, a fermenter for storing organic sludge and fermenting organic sludge, and a ventilation device connected to the air supply port of the fermenter and supplying air to the fermenter. A water injection mechanism for injecting water into the exhaust gas from the exhaust port to the exhaust port of the fermenter , comprising: an ozone generator that is disposed on the inlet side or the outlet side of the aeration apparatus and injects ozone into the fermenter tank. A fermentation process, wherein a bypass path is provided between the inlet side of the fermenter and the outlet side of the water injection mechanism to bypass air to the outlet side of the water injection mechanism without passing through the fermenter. Device.
[0008]
According to the present invention, since air can be supplied into the fermenter through the air supply port by the aeration device, the fermentation efficiency of the organic sludge in the fermenter is improved, and the time required for conversion to organic fertilizer is reduced. can do. Further, in the fermenter, the odor component generated from the organic sludge in the fermentation process can be decomposed and removed by the ozone injected from the ozone generator, so that the exhaust gas discharged from the exhaust port deteriorates the surrounding environment. Never.
[0009]
The present invention also provides a fermenter having an air supply port and an exhaust port, for storing organic sludge and fermenting organic sludge, and a ventilation device connected to the air supply port of the fermenter to supply air to the fermenter. And an ozone generator that is disposed on the inlet side or the outlet side of the aeration apparatus and injects ozone into the fermenter, a stirrer provided in the fermenter to stir organic sludge, and an exhaust port and a ventilator for the fermenter. A circulation path that is provided between the inlet side and returns exhaust gas from the exhaust port to the vent side, and a water injection mechanism that is provided at the exhaust port of the fermenter and injects water into the exhaust gas from the exhaust port. And an ultraviolet irradiation device provided on the outlet side of the water injection mechanism to irradiate exhaust gas with ultraviolet light to decompose residual ozone, and a fermenter, an aeration device, an ozone generation device, a circulation path, a water injection mechanism, and an ultraviolet irradiation device And a storage container for covering the It is a processing apparatus.
[0010]
According to the present invention, since the fermenter, the aeration device, the ozone generator, the circulation path, the water injection mechanism, and the ultraviolet irradiation device are housed in the housing container, the entire installation space can be made compact. Further, it is possible to prevent the exhaust gas from being released to the surroundings.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
First Embodiment Hereinafter, a first embodiment of a fermentation treatment apparatus according to the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a diagram showing a first embodiment of a fermentation treatment apparatus according to the present invention.
[0013]
As shown in FIG. 1, the fermentation treatment apparatus has an air supply port 7 and an exhaust port 8, stores the organic sludge 4 and ferments the organic sludge 4, and the air supply port 7 of the fermenter 1. , Which is connected to the fermenter 1 and supplies air to the fermenter 1, and ozone is injected into the fermenter 1 by being connected to the air supply path 2 a between the ventilator 2 and the fermenter 1 (to the outlet side of the ventilator 2). And an ozone generator 3 that performs the operation. Further, the fermenter 1 has a sludge inlet 5 for introducing organic sludge 4 into the fermenter 1 and a sludge outlet 6 for extracting fermentation completed and turned into organic fertilizer to remove sludge to the outside of the fermenter 1. Are provided respectively. Further, the ozone generator 3 has a discharge tube (not shown).
[0014]
In FIG. 1, an organic sludge 4 collected from sewage, a septic tank, an agricultural settlement drainage treatment facility, etc., dehydrated and dried by a sludge dryer or the like, and adjusted to a water content of about 60% suitable for fermentation by microorganisms is supplied to a sludge inlet. The fermentation tank 5 is fed into the fermenter 1, and a fermentation reaction is performed by aerobic bacteria living in the organic sludge 4. At this time, the air required for the aerobic bacteria to be active and perform the fermentation reaction is constantly supplied from the air supply port 7 into the fermenter 1 by the ventilation device 2.
[0015]
Further, during the fermentation reaction by the aerobic bacteria, an odor component such as (i) ammonia and the like and (ii) a sulfur compound such as methyl mercaptan which emits a strong odor even in a small amount are generated.
[0016]
On the other hand, the supply air from the ventilation device 2 is injected with ozone from the ozone generator 3. It is known that this ozone exerts a strong oxidizing power. Among the odor components generated during the fermentation reaction, sulfur compounds such as methyl mercaptan, which emit a malodor even in a very small amount, are decomposed and removed by the ozone oxidation reaction. Is done.
[0017]
As described above, according to the present embodiment, the air containing oxygen required for fermentation of organic sludge is always forcibly supplied into fermenter 1 by aeration device 2, so that the fermentation reaction in fermenter 1 is performed. Is performed well. For this reason, the time required for converting the contamination into organic fertilizer in the fermenter 1 can be reduced, and the odor component generated by the fermentation reaction is decomposed and removed by ozone injected from the ozone generator 3. Therefore, it is possible to prevent the odor component from diffusing into the surrounding environment.
[0018]
Second Embodiment Next, an embodiment according to the present invention will be described with reference to FIG. In the second embodiment shown in FIG. 2, an ozone generator 3 is installed in an air supply path 2a between a ventilation device 2 and an air supply port 7, and the ozone generator 3 has an ozone generation lamp 9 inside. Are provided. Each of the ozone generation lamps 9 is partitioned by a partition plate 10 whose upper and lower sides are alternately opened to form a single-pass flow path, so that air flows along the light emitting surface of the ozone generation lamp 9. Has become.
[0019]
2, the other configuration is substantially the same as that of the first embodiment shown in FIG.
[0020]
In FIG. 2, the same parts as those in the first embodiment shown in FIG.
[0021]
In FIG. 2, an ozone generation lamp 9 of the ozone generation device 3 is a lamp that emits ultraviolet light having a wavelength of 185 nm, and generates ozone by dissociating a part of oxygen molecules in the air. Since the ozone generation device 3 has the ozone generation lamp 9 as described above, ozone can be obtained at a lower cost as compared with a conventional ozone generation device using discharge or the like. Further, maintenance of the fermentation treatment apparatus can be simplified by replacing the lamp 9 having a reduced light emission characteristic.
[0022]
Third Embodiment Next, a third embodiment according to the present invention will be described with reference to FIG. In the third embodiment shown in FIG. 3, a device 11 is provided in the fermenter 1. The stirring device 11 includes a stirring paddle shaft 14 and a paddle 11 a fixed to the stirring paddle shaft 14. The stirring paddle shaft tube 14 of the stirring device 11 is connected by a belt 13 to a driving motor 12 installed at a lower part of the fermenter 1.
[0023]
3, the other configuration is substantially the same as that of the second embodiment shown in FIG.
[0024]
3, the same parts as those in the second embodiment shown in FIG. 2 are denoted by the same reference numerals, and detailed description is omitted.
[0025]
In FIG. 3, the organic sludge 4 stored in the fermenter 1 is stirred by a paddle 11 a of a stirring device 11, and air containing oxygen necessary for a fermentation reaction by aerobic bacteria is evenly supplied to the entire organic sludge 4. For this reason, the whole organic sludge 4 can be fermented uniformly, and the time until it becomes an organic fertilizer can be shortened.
[0026]
Further, the air supplied from the air supply port 7 contains ozone generated by the ozone generator 3, and the odor component generated by the fermentation reaction of the organic sludge 4 is removed by the oxidative decomposition reaction using the ozone. . In this case, the organic sludge 4 is stirred by the paddle 11a, and the odor component generated by the fermentation reaction is discharged without being trapped in the sedimentary layer of the organic sludge 4. Therefore, the efficiency of the oxidative decomposition reaction by ozone can be improved. Ozone is known to have an adverse effect on the human body when the concentration increases, but according to the present embodiment, the injected ozone can be effectively consumed, so that the amount of ozone discharged to the outside can be reduced. it can.
[0027]
In FIG. 3, the stirring paddle shaft tube 14 is a hollow tube, but a solid rod may be used instead of the stirring paddle shaft tube 14.
[0028]
Fourth Embodiment Next, a fourth embodiment according to the present invention will be described with reference to FIG. In the fourth embodiment shown in FIG. 4, the stirring device 11 has a hollow tubular stirring paddle shaft tube 14, and the stirring paddle shaft tube 14 is provided with a plurality of air blowing nozzles 15. The stirring paddle shaft tube 14 communicates with the air supply port 7 via a bearing 16.
[0029]
4, the other configuration is substantially the same as the embodiment shown in FIG.
[0030]
In FIG. 4, the same portions as those of the third embodiment shown in FIG. 3 are denoted by the same reference numerals, and detailed description is omitted.
[0031]
In FIG. 4, the air sent by the ventilation device 2 is sent to the stirring paddle shaft tube 14 via the ozone generator 3 and the air supply port 7. Thereafter, the air is supplied into the fermentation tank 1 through the air blowing nozzle 15 of the stirring paddle shaft pipe 14, and is discharged from the exhaust port 8 to the outside of the fermentation tank 1.
[0032]
During this time, oxygen necessary for the fermentation reaction by the aerobic bacteria and air containing ozone necessary for oxidatively decomposing the odor components are supplied from the blowing nozzle 15 formed in the stirring paddle shaft tube 14 to the inside of the sedimentary layer of the organic sludge 4. Supplied directly to For this reason, the efficiency of the fermentation reaction of the organic sludge 4 can be increased, and the time required for converting the organic sludge 4 into an organic fertilizer can be reduced. For this reason, the injected ozone can be efficiently consumed by the oxidative decomposition reaction, whereby the amount of discharged ozone can be reduced.
[0033]
Fifth Embodiment Next, a fifth embodiment according to the present invention will be described with reference to FIGS. In the fifth embodiment shown in FIG. 5, the ozone generator 3 is installed in the air supply path 2 a on the inlet side of the ventilation device 2, and a part of the exhaust air exiting the exhaust port 8 of the fermenter 1 is branched. A circulation path 17 is provided so as to return to the air supply path 2a between the ozone generator 3 and the ventilation apparatus 2. On the outlet side of the exhaust port 8 of the fermenter 1, an exhaust fan 18 is installed in an exhaust path 19 that branches off from the circulation path 17. A flow control valve 20 is provided in each of the circulation path 17, the exhaust path 19, and the air supply path 2a on the inlet side of the ozone generator 3, and most of the air discharged from the fermenter 1 is supplied to the circulation path. The opening degree of each flow control valve 20 is adjusted so that the flow control valve 20 is returned to the inlet side of the ventilation device 2 through 17. In addition, the amount of air passing through the ozone generator 3 and the amount of exhaust gas passing through the exhaust path 19 are the same, and the amount is such that the amount of oxygen necessary for fermentation of the organic sludge 4 by the aerobic bacteria can be supplied. Has become. Further, the amount of ozone supplied from the ozone generator 3 is set to a level that replenishes the amount of ozone used for the oxidative decomposition reaction of the odor component in the fermenter 1.
[0034]
The other configuration in FIG. 5 is substantially the same as the fourth embodiment shown in FIG. In FIG. 5, the same portions as those of the fourth embodiment shown in FIG. 4 are denoted by the same reference numerals, and detailed description is omitted.
[0035]
On the other hand, FIG. 6 shows the temporal characteristics of the oxidative decomposition reaction of the odor component by ozone. In FIG. 6, the horizontal axis indicates elapsed time, and the vertical axis indicates the functional odor intensity of the odor component.
[0036]
As shown in FIG. 6, the oxidative decomposition reaction of the odor component by ozone is relatively slow, and is a reaction that proceeds in units of tens of seconds. Therefore, if the air containing ozone supplied to the fermenter 1 is immediately exhausted, the ozone will be exhausted to the outside without being sufficiently used for the oxidative decomposition reaction with the odorous component.
[0037]
On the other hand, according to the present embodiment, the time necessary for the oxidative decomposition reaction of the odor component is secured by circulating the air containing the ozone and the odor component between the inlet and the outlet of the fermenter 1. be able to. Therefore, the injected ozone can be used for effective oxidative decomposition reaction, and the odor component can be more reliably decomposed and removed. Therefore, the amount of ozone in the exhaust gas discharged outward from the exhaust path 19 can be significantly reduced.
[0038]
Sixth Embodiment Next, a sixth embodiment according to the present invention will be described with reference to FIG. In the sixth embodiment shown in FIG. 7, the ozone generator 3 is installed in the circulation path 17 instead of being installed in the air supply path 2a on the inlet side of the ventilation apparatus 2, and other configurations are shown in FIG. This is substantially the same as the fifth embodiment shown.
[0039]
7, the same components as those of the fifth embodiment shown in FIG. 5 are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0040]
In FIG. 7, most of the air discharged from the fermenter 1 is passed through the circulation path 17, whereby air containing odorous components and ozone are circulated between the inlet side and the outlet side of the fermenter 1, whereby Odor can be decomposed by effectively using ozone.
[0041]
Further, since the ozone generating lamp 9 is used as the ozone generating means, the odor component can be dissociated and decomposed by ultraviolet light having a wavelength of 185 nm emitted from the ozone generating lamp 9. For this reason, the performance of decomposing and removing odor components is improved, and the amount of injected ozone can be reduced.
[0042]
Seventh Embodiment Next, a seventh embodiment according to the present invention will be described with reference to FIG. In the seventh embodiment shown in FIG. 8, a water injection mechanism 21 for injecting water into the exhaust gas from the exhaust port 8 is provided in an exhaust path 19 between the exhaust port 8 and the exhaust fan 18. . The water injection mechanism 21 has a shower nozzle 22 inside, and water set to a predetermined flow rate is supplied to the shower nozzle 22 from a water supply pipe 23 via a water flow meter 24 and a water flow rate adjustment valve 25. Drainage from the water injection mechanism 21 is discharged from a drain pipe 26 provided in the water injection mechanism 21. 8, the other configuration is substantially the same as the sixth embodiment shown in FIG.
[0043]
8, the same parts as those of the sixth embodiment shown in FIG. 7 are denoted by the same reference numerals, and the detailed description is omitted.
[0044]
As shown in FIG. 8, in the odor components generated by the fermentation reaction of the organic sludge 4 in the fermenter 1, a large amount of ammonia may be generated as compared with sulfur compounds such as methyl mercaptan. When the amount of ammonia increases with the progress of the fermentation reaction of the organic sludge 4, the concentration of ammonia contained in the exhaust gas from the fermenter 1 increases, causing a strong pungent odor. Among the odor components, sulfur oxides and the like are decomposed and removed by the oxidative decomposition reaction of ozone injected from the ozone generator 3, but it is difficult to oxidize and decompose ammonia with ozone.
[0045]
Since ammonia is a substance having high water solubility, as shown in FIG. 8, a water injection mechanism 21 is installed in the exhaust path 19 and water is injected into the exhaust gas to reduce the ammonia contained in the exhaust gas. By dissolving in water to produce ammonia water, and discharging this ammonia water from the drain pipe 26, the emission of ammonia odor can be prevented.
[0046]
Eighth Embodiment Next, an eighth embodiment according to the present invention will be described with reference to FIG. In the eighth embodiment shown in FIG. 9, an ultraviolet irradiation device 27 is installed behind the water injection mechanism 21 in the exhaust path 19.
[0047]
The ultraviolet irradiation device 27 has a plurality of ultraviolet lamps 28 that emit light mainly around ultraviolet light having a wavelength of 253.7 nm in the inside thereof. The irradiation between the ultraviolet lamps 28 is such that the upper and lower sides are alternately opened. The chamber is partitioned by the chamber partition plate 29 to form a single-pass flow path. In FIG. 9, other configurations are substantially the same as those of the seventh embodiment shown in FIG.
[0048]
9, the same parts as those of the seventh embodiment shown in FIG. 8 are denoted by the same reference numerals, and the detailed description will be omitted.
[0049]
As shown in FIG. 9, an oxidative decomposition reaction by ozone is performed inside the fermenter 1, and ammonia is recovered by the water injection mechanism 21. However, it is difficult to completely remove the odor component in the exhaust gas discharged from the water injection mechanism 21, and it is difficult to completely consume the ozone injected from the ozone generator 3 for the decomposition reaction. Therefore, the exhaust gas discharged from the exhaust fan 18 may include a residual odor component and residual ozone.
[0050]
According to the present embodiment, the ultraviolet lamp 28 incorporated in the ultraviolet irradiation device 27 generates ultraviolet light (hν) having a wavelength of 253.7 nm suitable for ozone absorption. Decomposes ozone (O ₃ ) and reacts with moisture (H ₂ O) in the exhaust gas to generate OH radicals. This reaction is represented by the following equation.
[0051]
O ₃ + hν → O ₂ + O ^*
H ₂ O + O ^* → 2 ・ OH
Here, O ^* represents an excited atom of oxygen.
[0052]
Since the OH radicals generated by the ozonolysis reaction exert stronger oxidizing power than ozone, the odor components remaining in the exhaust can be oxidized and decomposed, and the residual ozone can be reduced.
[0053]
Ninth Embodiment Next, a ninth embodiment according to the present invention will be described with reference to FIG. In the ninth embodiment shown in FIG. 10, a part of the air sucked from the air supply path 2 a is branched at one end of the bypass path 30 upstream of the junction with the circulation path 17, The end side is connected to the outlet side of the water injection mechanism 21 installed in the exhaust path 19, and the other configuration is substantially the same as that of the seventh embodiment shown in FIG.
[0054]
10, the same parts as those of the seventh embodiment shown in FIG. 8 are denoted by the same reference numerals, and the detailed description is omitted.
[0055]
As shown in FIG. 10, a part of the air sucked from the air supply path 2 a is sent to the exhaust path 19 on the outlet side of the water injection mechanism 21 by the bypass path 30 and mixed with the exhaust gas in the exhaust path 19, The concentration of residual odor components and residual ozone in exhaust gas can be reduced. In this case, the odor component and the residual concentration of ozone in the exhaust gas discharged from the exhaust fan 18 are adjusted by adjusting the bypass flow rate in the bypass path 30 by the flow rate adjusting valve 20 installed in the bypass path 30. be able to.
[0056]
Tenth embodiment Next, a tenth embodiment according to the present invention will be described with reference to FIGS. The tenth embodiment shown in FIG. 11 includes a fermenter 1, an aeration device 2, an ozone generator 3, a circulation path 17, a water injection mechanism 21, and an ultraviolet irradiation device 27. The configuration of the eighth embodiment shown in FIG. All the elements are stored in the same storage container 31. Further, an exhaust treatment device 32 is constituted by the water injection mechanism 21 and the ultraviolet irradiation device 27.
[0057]
11 and 12 are substantially the same as those of the eighth embodiment shown in FIG. In FIGS. 11 and 12, the same parts as those in the eighth embodiment shown in FIG. 9 are denoted by the same reference numerals, and detailed description will be omitted.
[0058]
As shown in FIGS. 11 and 12, all the components are stored in the same storage container 30, so that the installation space of the device can be reduced, and the device can be easily moved and transported. In particular, when small-scale treatment facilities are dispersed in an area, the fermentation treatment apparatus according to the present embodiment that is easy to transport without taking up space is effective.
[0059]
In the present embodiment, the case where the components of the eighth embodiment shown in FIG. 9 are stored in the same storage container 30 has been described, but all the components of the other embodiments are stored in the same storage container 30. It may be stored.
[0060]
【The invention's effect】
As described above, according to the present invention, by supplying air into the fermentation tank, it is possible to improve the fermentation efficiency of organic sludge and reduce the time required for conversion to organic fertilizer, and in the fermentation process. Odor components generated can be decomposed and removed. Therefore, a useful organic fertilizer can be efficiently produced without deteriorating the surrounding environment. Further, since the entire installation space can be made compact and exhaust gas can be prevented from being released to the surroundings, deterioration of the surrounding environment can be more reliably prevented.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a first embodiment of a fermentation treatment apparatus according to the present invention.
FIG. 2 is a configuration diagram showing a second embodiment of the fermentation treatment device according to the present invention.
FIG. 3 is a configuration diagram showing a third embodiment of the fermentation treatment device according to the present invention.
FIG. 4 is a configuration diagram showing a fourth embodiment of the fermentation treatment apparatus according to the present invention.
FIG. 5 is a configuration diagram showing a fifth embodiment of the fermentation treatment apparatus according to the present invention.
FIG. 6 is a configuration diagram showing the time characteristics of the oxidative decomposition reaction of the odor component by ozone.
FIG. 7 is a configuration diagram showing a sixth embodiment of the fermentation treatment apparatus according to the present invention.
FIG. 8 is a configuration diagram showing a seventh embodiment of the fermentation treatment apparatus according to the present invention.
FIG. 9 is a configuration diagram showing an eighth embodiment of the fermentation treatment apparatus according to the present invention.
FIG. 10 is a configuration diagram showing a ninth embodiment of the fermentation treatment apparatus according to the present invention.
FIG. 11 is a configuration diagram showing a tenth embodiment of the fermentation treatment apparatus according to the present invention.
FIG. 12 is a configuration diagram showing a fermentation treatment apparatus according to a tenth embodiment of the fermentation treatment apparatus according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fermenter 2 Ventilation device 3 Ozone generator 4 Organic sludge 7 Air supply port 8 Exhaust port 11 Stirrer 14 Stirring paddle shaft tube 15 Air blowout nozzle 17 Circulation path 18 Exhaust fan 19 Exhaust path 20 Flow control valve 21 Water injection mechanism 27 UV irradiation device 30 Bypass path 31 Storage container

Claims (3)

A fermenter having an air supply port and an exhaust port, containing organic sludge and fermenting organic sludge,
A ventilator connected to the air supply port of the fermenter and supplying air to the fermenter;
An ozone generator that is arranged on the inlet or outlet side of the aeration device and injects ozone into the fermenter;
Equipped with a,
A water injection mechanism is provided at the exhaust port of the fermenter to inject water into the exhaust gas from the exhaust port,
A fermentation treatment apparatus, wherein a bypass path for bypassing air to an outlet side of a water injection mechanism without passing through a fermenter is provided between an inlet side of the fermenter tank and an outlet side of the water injection mechanism . A fermenter having an air supply port and an exhaust port, containing organic sludge and fermenting organic sludge,
A ventilator connected to the air supply port of the fermenter and supplying air to the fermenter;
An ozone generator that is arranged on the inlet or outlet side of the aeration device and injects ozone into the fermenter;
A stirrer provided in the fermenter to stir organic sludge,
A circulation path that is provided between the exhaust port of the fermenter and the inlet side of the ventilator, and that returns the exhaust gas from the exhaust port to the outlet side of the ventilator,
A water injection mechanism that is provided at an exhaust port of the fermenter and injects water into exhaust gas from the exhaust port;
An ultraviolet irradiation device that is provided on the outlet side of the water injection mechanism and irradiates the exhaust gas with ultraviolet light to decompose residual ozone;
A storage container that covers the fermenter, aeration device, ozone generator, circulation path, water injection mechanism, and ultraviolet irradiation device,
A fermentation treatment device comprising: 3. The bypass path according to claim 2, wherein a bypass path is provided between the inlet side of the fermenter and the outlet side of the water injection mechanism to bypass air to the outlet side of the water injection mechanism without passing through the fermenter. Fermentation processing equipment.

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