Fermentation liquid extraction apparatus and fermentation liquid extraction method

Abstract

The present invention provides a fermentation liquid extraction apparatus, a fermentation accelerator, and a fermentation liquid extraction method that can reduce the cost of fermentation processing. [Solution] The system is characterized by comprising a cultivation tank 10, a water collection tank 20, a first pipe 61, a water purification tank 30, an air pump 50, a second pipe 62, and a storage tank 40. The cultivation tank 10 stores a fermented material 110 on which grain 120 has been scattered, and a fermented liquid 100 containing fermentation bacteria contained in the fermented material 110, into which the fermented material 110 is immersed. The water collection tank 20 is provided separated from the side wall 11 of the cultivation tank 10 and stores the fermented liquid 100 flowing in from the cultivation tank 10.

Description

Technical Field

[0001] The present invention relates to a fermentation broth extraction device , and and a fermentation broth extraction method.

Background Art

[0002] Conventionally, as a method for fermenting waste generated along with agricultural production activities, for example, a method for producing a fermented product disclosed in Patent Document 1 has been proposed. Further, as the use of the fermented product, for example, in addition to being used as a raw material when re-fermenting waste, it is known to mix with a material for plant cultivation disclosed in Patent Document 2 and perform plant cultivation.

[0003] In Patent Document 1, it is a method for producing a fermented product by fermenting a waste culture medium used for mushroom cultivation, the method comprising: a step of steam sterilizing the waste culture medium used for mushroom cultivation by spraying steam into the waste culture medium while stirring in a steam sterilization device opened to the atmosphere; a step of cooling the steam-sterilized waste culture medium and then adding a fermenting bacterium and protease to the waste culture medium; and a step of fermenting the waste culture medium to which the fermenting bacterium and the protease have been added while turning it over at a predetermined interval for a predetermined period, and a fermented product is produced by the above method.

[0004] In Patent Document 2, a material for plant cultivation containing a biologically-derived extract having an adjusted hydrogen ion index (pH) by extraction of a dipeptide (anserine) is disclosed. This material for plant cultivation may further contain a fertilizer. This material for plant cultivation may be acidified, and the hydrogen ion index may be 0.5 or more and 5 or less. This material for plant cultivation may be used, for example, as a soil improvement material, a fertilizer, or a mineral extraction water.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] In this context, it is known that the fermentation reaction weakens with each subsequent fermentation, and therefore, substances such as proteases (protein-degrading enzymes) are often added. However, proteases are expensive as materials in fermentation processes, raising concerns that in some cases, the waste disposal business may not be viable. In this regard, the technologies disclosed in Patent Documents 1 and 2 do not adequately address these concerns.

[0007] Therefore, the present invention was devised in view of the above-mentioned problems, and its purpose is to provide a fermentation liquid extraction device that can reduce the cost of fermentation processing. , and The present invention provides a method for extracting fermented liquid. [Means for solving the problem]

[0008] The fermentation liquid extraction apparatus according to the first invention is characterized by comprising: a cultivation tank containing a fermented material on which grains have been scattered, and a fermentation liquid containing fermentation bacteria contained in the fermented material, into which the fermented material is immersed; a water collection tank provided across the side wall of the cultivation tank for storing the fermentation liquid flowing in from the cultivation tank; a first pipe connected to the water collection tank; a water purification tank connected to the water collection tank via the first pipe for storing the fermentation liquid flowing in from the water collection tank; an air pump for supplying air to the fermentation liquid stored in the water purification tank; a second pipe connected to the water purification tank; and a storage tank connected to the water purification tank via the second pipe for storing the fermentation liquid flowing in from the water purification tank.

[0009] The fermentation liquid extraction apparatus according to the second invention is characterized in that, in the first invention, the water collection tank, the water purification tank, and the storage tank store the fermentation liquid that flows in by the overflow method.

[0010] The fermentation liquid extraction apparatus according to the third invention is characterized in that, in the second invention, the water purification tank and the storage tank are installed underground.

[0011] The fermentation liquid extraction apparatus according to the fourth invention is characterized in that, in the third invention, the cultivation tank is installed outdoors where raindrops fall, and the water collection tank has a ceiling that prevents the raindrops from falling.

[0012] The fermentation liquid extraction apparatus according to the fifth invention is characterized in that, in the fourth invention, the bottom of the cultivation tank is provided in an inclined shape, with the position becoming higher as it moves away from the side wall.

[0013] The fermentation liquid extraction apparatus according to the sixth invention is characterized in that, in the second invention, the height of the connection position of the first pipe connected to the water collection tank is set at a height lower than the side wall.

[0014] The fermentation liquid extraction apparatus according to the seventh invention is characterized in that, in the sixth invention, it further comprises a third pipe connecting the storage tank and the cultivation tank.

[0016] The 8 The fermentation liquid extraction method according to the invention is characterized by comprising: a cultivation step of storing a fermented material on which grains have been scattered, and a fermentation liquid containing fermentation bacteria contained in the fermented material, in a cultivation tank by immersing the fermented material in the cultivation tank; a water collection step of storing the fermentation liquid flowing in from the cultivation tank in a water collection tank provided across the side wall of the cultivation tank; a water purification step of storing the fermentation liquid flowing in from the water collection tank in the water purification tank via a first pipe connected to the water collection tank and a water purification tank; a supply step of supplying air to the fermentation liquid stored in the water purification tank using an air pump; and a storage step of storing the fermentation liquid flowing in from the water purification tank in the storage tank via a second pipe connected to the water purification tank and a storage tank. [Effects of the Invention]

[0017] According to the first to seventh inventions, the cultivation tank stores a fermented material on which grains have been scattered, and a fermentation liquid containing fermentation bacteria that have been immersed in the fermented material. A water collection tank is provided separated from the side wall of the cultivation tank and stores the fermentation liquid that flows in from the cultivation tank. In this way, the fermentation bacteria contained in the fermented material can be activated via the grains and then stored as a fermentation liquid. This allows the stored fermentation liquid to be used in the fermentation process, thereby reducing the cost of the fermentation process.

[0018] In particular, according to the second invention, the water collection tank, water purification tank, and storage tank store the fermented liquid that flows in by the overflow method. Therefore, the fermented liquid can be extracted with the minimum necessary energy without using machinery such as pumps. This makes it possible to reduce the cost of extracting the fermented liquid. In addition to the above, because the fermented liquid is stored using the overflow method, the fermented liquid can be extracted while suppressing the intrusion of impurities such as fermented waste products. This makes it possible to improve the quality of the fermented liquid.

[0019] In particular, according to the third invention, the water purification tank and storage tank are installed underground. Therefore, it is possible to suppress the deterioration of the quality of the fermented liquid stored in the water purification tank and storage tank due to changes in temperature. This makes it possible to suppress the deterioration of the quality of the fermented liquid.

[0020] In particular, according to the fourth invention, the cultivation tank is installed outdoors where raindrops fall. That is, when it rains, raindrops are collected in the cultivation tank, promoting the outflow of fermentation bacteria from the fermented material and the activation of fermentation bacteria via the grain, thereby increasing the volume of fermentation liquid. Furthermore, the water collection tank has a ceiling that prevents raindrops from falling. Therefore, it is possible to suppress the dilution of the fermentation liquid stored in the water collection tank by raindrops. As a result, it is possible to extract a highly concentrated fermentation liquid while keeping material costs down.

[0021] In particular, according to the fifth invention, the bottom of the cultivation tank is provided in an inclined shape that shows a higher position as it moves away from the side wall. Therefore, when the fermented liquid stored in the cultivation tank flows into the water collection tank, the possibility of the fermented processed product and grains flowing in can be reduced. As a result, it becomes possible to increase the purity of the extracted fermented liquid.

[0022] In particular, according to the sixth invention, the height of the connection position of the first pipe connected to the water collection tank is provided at a height lower than the side wall. Therefore, when the fermented liquid flows from the water collection tank into the clean water tank, it is possible to prevent the fermented liquid from flowing out over the side wall to the cultivation tank side. As a result, it becomes possible to improve the efficiency when extracting the fermented liquid.

[0023] In particular, according to the seventh invention, the third pipe connects the storage tank and the cultivation tank. Therefore, the fermented liquid stored in the storage tank can flow into the cultivation tank, and the fermenting bacteria can be activated through the grains. As a result, it becomes possible to improve the quality of the fermented liquid.

[0025] According to the 8 invention, the cultivation step stores the fermented processed product sprinkled with grains and the fermented liquid containing the fermenting bacteria contained in the fermented processed product in the cultivation tank. Also, the water collection step stores the fermented liquid flowing in from the cultivation tank in a water collection tank provided隔着 the side wall of the cultivation tank. Therefore, the fermenting bacteria contained in the fermented processed product can be activated through the grains and then stored as a fermented liquid. As a result, the stored fermented liquid can be used for the fermentation process, and it becomes possible to suppress the cost of the fermentation process.

Brief Description of the Drawings

[0026] [Figure 1] FIG. 1 is a schematic top view showing an example of a fermented liquid extraction device in an embodiment. [Figure 2] FIG. 2(a) is a schematic cross-sectional view corresponding to A-A in FIG. 1, FIG. 2(b) is a schematic cross-sectional view corresponding to B-B in FIG. 1, and FIG. 2(c) is a schematic cross-sectional view corresponding to C-C in FIG. 1. [Figure 3]Figure 3(a) is a schematic cross-sectional view showing a first modified example of the fermentation liquid extraction apparatus in the embodiment, and Figure 3(b) is a schematic cross-sectional view showing a second modified example of the fermentation liquid extraction apparatus in the embodiment. [Figure 4] Figure 4 is a flowchart showing an example of a fermentation liquid extraction method in an embodiment. [Modes for carrying out the invention]

[0027] The following describes in detail an example of a fermentation liquid extraction apparatus, a fermentation accelerator, and a fermentation liquid extraction method according to the present invention.

[0028] (Embodiment: Fermentation liquid extraction apparatus 1) Figure 1 is a schematic top view showing an example of the fermentation liquid extraction apparatus 1 in this embodiment. Figure 2(a) is a schematic cross-sectional view corresponding to AA in Figure 1, Figure 2(b) is a schematic cross-sectional view corresponding to BB in Figure 1, and Figure 2(c) is a schematic cross-sectional view corresponding to CC in Figure 1.

[0029] The fermentation liquid extraction apparatus 1 is used, for example, to extract a fermentation liquid 100 used when fermenting waste. The waste includes known organic waste generated from agricultural production activities and food consumption. The fermentation process refers to a known processing method that utilizes fermentation by fermenting bacteria. The fermentation liquid 100 is used to promote the fermentation process and includes, for example, fermenting bacteria, enzymes that activate the fermentation of the fermenting bacteria, and water.

[0030] The fermentation liquid extraction apparatus 1 comprises a cultivation tank 10, a water collection tank 20, a water purification tank 30, a storage tank 40, an air pump 50, and piping 60. The piping 60 includes, for example, a first pipe 61, a second pipe 62, and a third pipe 63.

[0031] <Cultivation tank 10> The cultivation tank 10 stores the fermented material 110 on which grain 120 has been scattered, and the fermented liquid 100, as shown in Figure 2(a), for example. The cultivation tank 10 has a bottom and sides made of an impermeable material such as concrete, and is shaped to prevent the fermented material 110 and fermented liquid 100 from flowing out of the fermented liquid extraction device 1. For example, a known concrete outdoor storage facility may be used as the cultivation tank 10.

[0032] The fermented material 110 includes fermented waste. The type and method of fermentation used to produce the fermented material 110 are arbitrary. The fermented material 110 may be mixed with, for example, soil. The fermented material 110 includes, for example, compost made using enzymes.

[0033] The fermentation liquid 100 is stored in the cultivation tank 10 with the fermented product 110 submerged in it. The fermentation liquid 100 contains the fermentation bacteria contained in the fermented product 110. For example, at the time of storage in the cultivation tank 10, only water such as raindrops may be used as the fermentation liquid 100. In this case, after about one month with the fermented product 110 submerged in it, the fermentation bacteria contained in the fermented product 110 will be included in the fermentation liquid 100.

[0034] Grain 120 refers to the seeds of grass crops such as rice and wheat. Grain 120 may include, for example, germinated seeds. In particular, the inventors have discovered that using germinated brown rice as grain 120 enhances the fermentation reaction of the extracted fermented liquid 100. This is presumed to be because, considering that brown rice contains more than 10 times the nutrients of white rice, the fermentation bacteria contained in the fermented product 110 readily react with the enzymes contained in germinated brown rice and also readily leach into the fermented liquid 100 in which the fermented product 110 is immersed.

[0035] For example, as shown in Figure 3(a), the bottom 10u of the cultivation tank 10 is provided in a sloping shape, becoming higher as it moves away from the side wall 11. In this case, when the fermentation liquid 100 stored in the cultivation tank 10 flows into the water collection tank 20, the possibility of the fermented material 110 and grain 120 flowing in can be reduced.

[0036] The cultivation tank 10 is installed outdoors, for example, where raindrops fall. In this case, when it rains, raindrops are collected in the cultivation tank 10, promoting the outflow of fermentation bacteria from the fermented material 110 and the activation of fermentation bacteria via the grains 120, thereby increasing the volume of fermentation liquid 100.

[0037] <Water collection tank 20> The water collection tank 20 is provided separated from the side wall 11 of the cultivation tank 10 and stores the fermentation liquid 100 flowing in from the cultivation tank 10. The water collection tank 20 has a bottom and sides made of an impermeable material such as concrete, similar to the cultivation tank 10, and is shaped to prevent the fermentation liquid 100 from flowing out of the fermentation liquid extraction device 1.

[0038] The water collection tank 20 may be formed, for example, by isolating a part of the cultivation tank 10 with a side wall 11. In this case, the height of the side wall 11 is formed to be lower than the height of the sides of the cultivation tank 10 other than the side wall 11. This makes it easier for the fermentation liquid 100 to flow from the cultivation tank 10 to the water collection tank 20.

[0039] The water collection tank 20 stores the fermentation liquid 100 that overflows from the side wall 11, for example, by an overflow method. In addition to the above, the water collection tank 20 may also store the fermentation liquid 100 that has been pumped up from the cultivation tank 10 using a known pump.

[0040] The water collection tank 20 may have a ceiling portion 21 that prevents raindrops from falling, as shown in Figure 3(b), for example. In this case, it is possible to suppress the dilution of the fermentation liquid 100 stored in the water collection tank 20 by raindrops. For example, the ceiling portion 21 may be provided at an angle so that its height decreases towards the cultivation tank 10. In this case, raindrops that fall on the ceiling portion 21 can easily flow into the cultivation tank 10, making it possible to increase the amount of fermentation liquid 100.

[0041] <Water purification tank 30> The water purification tank 30 is connected to the water collection tank 20 via the first pipe 61 and stores the fermented liquid 100 flowing in from the water collection tank 20. The water purification tank 30 can be a known water storage tank, such as a plastic tank made of polyethylene or other materials, or a stainless steel tank.

[0042] The water purification tank 30 is installed, for example, underground. By installing the water purification tank 30 underground (for example, in the soil or in a place not exposed to the outside air, such as the basement of a building), temperature changes inside the water purification tank 30 due to changes in ambient temperature are suppressed. Therefore, the deterioration of the quality of the fermented liquid 100 stored in the water purification tank 30 due to temperature changes can be suppressed.

[0043] The water purification tank 30 stores the fermented liquid 100 that overflows from the water collection tank 20 via the first pipe 61, for example, by an overflow method. In addition to the above, the water purification tank 30 may also store the fermented liquid 100 that has been pumped up from the water collection tank 20 using a known pump. If the water purification tank 30 is installed above ground, it is preferable to use a known pump.

[0044] <Storage tank 40> The storage tank 40 is connected to the water purification tank 30 via the second pipe 62 and stores the fermentation liquid 100 flowing in from the water purification tank 30. The storage tank 40 can be a known water storage tank, such as a plastic tank made of polyethylene or other materials, or a stainless steel tank.

[0045] The storage tank 40 is installed, for example, underground. By installing the storage tank 40 underground, temperature changes inside the storage tank 40 due to changes in ambient temperature are suppressed. Therefore, the deterioration of the quality of the fermentation liquid 100 stored in the storage tank 40 due to temperature changes can be suppressed. The quality of the fermentation liquid 100 can be evaluated using known measurement results such as biochemical oxygen demand (BOD). The measurement of biochemical oxygen demand can be carried out, for example, by a method conforming to JIS K 0102.

[0046] The storage tank 40 stores the fermented liquid 100 that overflows from the water purification tank 30 via the second pipe 62, for example, by an overflow method. In addition to the above, the storage tank 40 may also store the fermented liquid 100 that has been pumped up from the water purification tank 30 using a known pump. If the storage tank 40 is installed above ground, it is preferable to use a known pump.

[0047] <Air pump 50> The air pump 50 supplies air to the fermentation liquid 100 stored in the water purification tank 30. By supplying air to the fermentation liquid 100, the death of fermentation bacteria contained in the fermentation liquid 100 can be suppressed. For example, a known air supply type pump can be used as the air pump 50.

[0048] <Piping 60> The piping 60 connects each of the tanks 10, 20, 30, and 40 and is used for the inflow of the fermentation liquid 100. The piping 60 can be a known liquid supply pipe, such as a resin pipe made of rigid polyvinyl chloride or a steel pipe made of stainless steel. The diameter and length of the piping 60 can be arbitrarily set according to the application. The piping 60 may also be connected to a known pump, for example. In this case, the fermentation liquid 100 may be inflowed into each of the tanks 10, 20, 30, and 40 via the known pump and the piping 60.

[0049] The first pipe 61 is connected to the water collection tank 20 and the purified water tank 30. The fermented liquid 100 flows from the water collection tank 20 to the purified water tank 30 via the first pipe 61. For example, the height of the first pipe 61 connected to the water collection tank 20 is set lower than the top of the side wall 11. In this case, when the fermented liquid 100 flows from the water collection tank 20 to the purified water tank 30, it is possible to prevent the fermented liquid 100 from flowing over the side wall 11 into the cultivation tank 10.

[0050] The second pipe 62 is connected to the water purification tank 30 and the storage tank 40. The fermented liquid 100 flows from the water purification tank 30 to the storage tank 40 via the second pipe 62. For example, the height of the second pipe 62 connected to the water purification tank 30 is less than or equal to the height of the first pipe 61 connected to the water purification tank 30. In this case, when the fermented liquid 100 flows from the water purification tank 30 to the storage tank 40, it is possible to suppress the fermented liquid 100 from flowing into the water collection tank 20.

[0051] For example, if piping 60 includes a third pipe 63, the third pipe 63 is connected to the storage tank 40 and the cultivation tank 10. The fermentation liquid 100 flows from the storage tank 40 to the cultivation tank 10 via the third pipe 63. For example, the height of the third pipe 63 connected to the storage tank 40 is less than or equal to the height of the second pipe 62 connected to the storage tank 40. In this case, when the fermentation liquid 100 flows from the storage tank 40 to the cultivation tank 10, it is possible to suppress the flow of the fermentation liquid 100 into the water purification tank 30.

[0052] When the fermentation liquid extraction device 1 is connected to the storage tank 40 and the cultivation tank 10 via the third pipe 63, the fermentation liquid 100 can be circulated. In this case, by circulating the fermentation liquid 100 for about one month, impurities can be removed and a concentrated fermentation liquid 100 can be produced.

[0053] (Embodiment: Method for extracting fermented liquid) Next, an example of a fermentation liquid extraction method in this embodiment will be described. Figure 4 is a flowchart of an example of a fermentation liquid extraction method in this embodiment. The fermentation liquid extraction method comprises a cultivation step S110, a water collection step S120, a water purification step S130, a supply step S140, and a storage step S150. The fermentation liquid extraction method is carried out, for example, using the fermentation liquid extraction apparatus 1 described above.

[0054] <Cultivation Step S110> In cultivation step S110, the fermented material 110 on which the grain 120 has been sprayed, and the fermented liquid 100 containing the fermentation bacteria contained in the fermented material 110, are stored in the cultivation tank 10. In cultivation step S110, for example, after storing the fermented material 110 in the cultivation tank 10, the grain 120 is sprayed onto the fermented material 110 and the fermented liquid 100 is stored.

[0055] As the fermentation liquid 100, for example, a liquid obtained by mixing a pre-prepared fermentation stock solution such as protease with water may be used, or a liquid containing at least a portion of the pre-extracted fermentation liquid 100 may be used. In addition, for example, the fermentation liquid 100 may contain raindrops.

[0056] <Water collection step S120> The water collection step S120 stores the fermentation liquid 100 flowing in from the cultivation tank 10 into a water collection tank 20, which is provided separated from the side wall 11 of the cultivation tank 10. The water collection step S120 stores the fermentation liquid 100 overflowing from the side wall 11 into the water collection tank 20, for example, by an overflow method. In this case, the water collection step S120 may, for example, use raindrops to cause the fermentation liquid 100 to overflow from the side wall 11.

[0057] <Water purification step S130> In the water purification step S130, the fermented liquid 100 flowing in from the water collection tank 20 via the first pipe 61 connected to the water collection tank 20 and the water purification tank 30 is stored in the water purification tank 30. In the water purification step S130, for example, by the overflow method, the fermented liquid 100 overflowing from the water collection tank 20 into the first pipe 61 is stored in the water purification tank 30.

[0058] <Supply step S140> In the supply step S140, air is supplied to the fermented liquid 100 stored in the water purification tank 30 using the air pump 50. The amount of air supplied to the fermented liquid 100 can be set arbitrarily according to the application. In the supply step S140, for example, protease or molasses may be added to the fermented liquid 100 stored in the water purification tank 30.

[0059] <Storage step S150> In the storage step S150, the fermented liquid 100 flowing in from the water purification tank 30 via a second pipe 62 connected to the water purification tank 30 and the storage tank 40 is stored in the storage tank 40. In the storage step S150, for example by the overflow method, the fermented liquid 100 overflowing from the water purification tank 30 into the second pipe 62 is stored in the storage tank 40.

[0060] By performing each of the steps described above, the fermentation liquid extraction method is completed. This allows the fermentation liquid 100 stored in the storage tank 40 to be used for fermentation processing, thereby reducing the cost of the fermentation process.

[0061] For example, in the supply step S140, air may be supplied to the fermentation liquid 100 stored in the storage tank 40 using the air pump 50.

[0062] Furthermore, the fermentation liquid extraction method may include a circulation step. The circulation step involves storing the fermentation liquid 100 flowing in from the storage tank 40 into the cultivation tank 10 via a third pipe 63 connected to the storage tank 40 and the cultivation tank 10.

[0063] For example, a fermentation accelerator comprises a fermentation liquid 100 and a diluent. The fermentation liquid 100 is obtained, for example, from a storage tank 40. The diluent is used to dilute the fermentation liquid 100, and for example, water is used as the diluent. The fermentation accelerator is, for example, a mixture of 50 to 500 times the amount of diluent to the amount of fermentation liquid 100. Therefore, the extracted fermentation liquid 100 can be used in a diluted state according to its intended use. This makes it possible to reduce the cost of the fermentation process.

[0064] According to the embodiment described above, the cultivation tank 10 stores the fermented material 110 on which the grain 120 has been scattered, and the fermented liquid 100 in which the fermented material 110 is immersed and contains fermentation bacteria. The water collection tank 20 is provided separated from the cultivation tank 10 by the side wall 11 and stores the fermented liquid 100 that flows in from the cultivation tank 10. As a result, the fermentation bacteria contained in the fermented material 110 can be activated via the grain 120 and then stored as the fermented liquid 100. This makes it possible to use the stored fermented liquid 100 for fermentation processing and to reduce the cost of fermentation processing.

[0065] Furthermore, according to the above-described embodiment, the water collection tank 20, the water purification tank 30, and the storage tank 40 store the fermentation liquid 100 that flows in by the overflow method. Therefore, the fermentation liquid 100 can be extracted with the minimum necessary energy without using machinery such as pumps. This makes it possible to reduce the cost of extracting the fermentation liquid 100. In addition to the above, since the fermentation liquid 100 is stored using the overflow method, the fermentation liquid 100 can be extracted while suppressing the intrusion of impurities such as fermentation treated material 110. This makes it possible to improve the quality of the fermentation liquid 100.

[0066] Furthermore, according to the embodiment described above, the water purification tank 30 and the storage tank 40 are installed underground. Therefore, it is possible to suppress the deterioration of the quality of the fermented liquid 100 stored in the water purification tank 30 and the storage tank 40 due to changes in temperature. This makes it possible to suppress the deterioration of the quality of the fermented liquid 100.

[0067] Furthermore, according to the embodiment described above, the cultivation tank 10 is installed outdoors where raindrops fall. That is, when it rains, raindrops are collected in the cultivation tank 10, promoting the outflow of fermentation bacteria from the fermented material 110 and the activation of fermentation bacteria via the grains 120, thereby increasing the volume of fermentation liquid 100. In addition, the water collection tank 20 has a ceiling portion 21 that prevents raindrops from falling. Therefore, it is possible to suppress the dilution of the fermentation liquid 100 stored in the water collection tank 20 by raindrops. As a result, it is possible to extract a highly concentrated fermentation liquid 100 while keeping material costs down.

[0068] Furthermore, according to the embodiment described above, the bottom 10u of the cultivation tank 10 is provided in a sloping shape, becoming higher as it moves away from the side wall 11. Therefore, when the fermentation liquid 100 stored in the cultivation tank 10 flows into the water collection tank 20, the possibility of fermented material 110 and grain 120 flowing in can be reduced. This makes it possible to increase the purity of the extracted fermentation liquid 100.

[0069] Furthermore, according to the embodiment described above, the connection point of the first pipe 61 connected to the water collection tank 20 is set at a height lower than the side wall 11. Therefore, when the fermentation liquid 100 flows from the water collection tank 20 to the water purification tank 30, it is possible to suppress the fermentation liquid 100 from flowing over the side wall 11 to the cultivation tank 10 side. This makes it possible to improve the efficiency when extracting the fermentation liquid 100.

[0070] Furthermore, according to the embodiment described above, the third pipe 63 connects the storage tank 40 and the cultivation tank 10. Therefore, the fermentation liquid 100 stored in the storage tank 40 can flow into the cultivation tank 10, and the fermentation bacteria can be activated via the grains 120. This makes it possible to improve the quality of the fermentation liquid 100.

[0071] Furthermore, according to the embodiment described above, the diluent is used to dilute the fermentation liquid 100. Therefore, the extracted fermentation liquid 100 can be used in a diluted state according to its intended use. This makes it possible to reduce the cost of the fermentation process.

[0072] Furthermore, according to the embodiment described above, the cultivation step S110 involves immersing the fermented material 110 on which the grain 120 has been scattered, and the fermented liquid 100 containing the fermentation bacteria contained in the fermented material 110, into the cultivation tank 10. The water collection step S120 involves storing the fermented liquid 100 flowing in from the cultivation tank 10 into a water collection tank 20 provided across the side wall 11 of the cultivation tank 10. As a result, the fermentation bacteria contained in the fermented material 110 can be activated via the grain 120 and then stored as the fermented liquid 100. This allows the stored fermented liquid 100 to be used for fermentation processing, thereby reducing the cost of fermentation processing.

[0073] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of Symbols]

[0074] 1: Fermentation liquid extraction device 10:Cultivation tank 10u: Bottom 11: Side wall 20: Water collection tank 21: Ceiling 30: Water purification tank 40: Storage tank 50: Air pump 60: Piping 61: First piping 62: Second piping 63: Third pipe 100: Fermentation liquid 110: Fermented product 120: Grain S110: Cultivation Steps S120: Water collection step S130: Water purification step S140: Supply step S150: Storage step

Claims

1. A cultivation tank containing a fermented material in which grains have been scattered, and a fermentation liquid containing fermentation bacteria contained in the fermented material, A collection tank is provided, separated from the side wall of the cultivation tank, for storing the fermentation liquid flowing in from the cultivation tank, The first pipe connected to the aforementioned water collection tank, A water purification tank is connected to the water collection tank via the first pipe and stores the fermented liquid flowing in from the water collection tank, An air pump is used to supply air to the fermentation liquid stored in the water purification tank, The second pipe connected to the aforementioned water purification tank, A storage tank connected to the water purification tank via the second piping, which stores the fermentation liquid flowing in from the water purification tank, To be prepared A fermentation liquid extraction device characterized by the following.

2. The water collection tank, the water purification tank, and the storage tank store the fermented liquid that flows in by the overflow method. A fermentation liquid extraction apparatus according to claim 1, characterized by the following:

3. The water purification tank and the storage tank shall be installed underground. A fermentation liquid extraction apparatus according to claim 2, characterized by the following:

4. The aforementioned cultivation tank is installed outdoors where raindrops fall, The water collection tank has a ceiling to prevent raindrops from falling. A fermentation liquid extraction apparatus according to claim 3, characterized by the following:

5. The bottom of the cultivation tank is provided in a sloping manner, with the position becoming higher as it moves away from the side wall. A fermentation liquid extraction apparatus according to claim 4, characterized by the following:

6. The height of the connection point of the first pipe connected to the water collection tank is set lower than the height of the side wall. A fermentation liquid extraction apparatus according to claim 2, characterized by the following:

7. The storage tank and the cultivation tank are further provided with a third pipe connecting them. A fermentation liquid extraction apparatus according to claim 6, characterized by the following:

8. A cultivation step in which a fermented material on which grains have been scattered, and a fermentation liquid containing fermentation bacteria contained in the fermented material, are placed in a cultivation tank, A water collection step is provided in a water collection tank separated from the side wall of the cultivation tank, for storing the fermentation liquid flowing in from the cultivation tank, A water purification step in which the fermented liquid flowing in from the water collection tank is stored in the water purification tank via a first pipe connected to the water collection tank and the water purification tank, A supply step involves supplying air to the fermentation liquid stored in the water purification tank using an air pump, A storage step in which the fermented liquid flowing in from the water purification tank is stored in the storage tank via a second pipe connected to the water purification tank and the storage tank, To be prepared A fermentation liquid extraction method characterized by the following.

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