Treatment system for liquid waste containing organic matter

Abstract

Provided is a treatment system for liquid waste containing an organic substance, which can naturally and largely dry the liquid waste containing the organic substance, thereby reducing the operating cost and suppressing the equipment investment. This treatment system for liquid waste containing organic substances is provided with: a fermentation device (2) having a sealed container (21) for storing a fermentation raw material in a storage unit (21d) and decompressing and heating the storage unit (21d), and a stirring device (22) for stirring the fermentation raw material in the storage unit (21d), a treatment region (3) for treating the fermentation raw material in the storage unit (21d), and a transfer unit (10) for transferring the fermentation raw material to the storage unit (21d), and a release unit (51) for releasing the fermentation raw material; in the present invention, a fermentation device (2) in which organic components of a fermentation raw material are decomposed by microorganisms, a plant (P) to be treated is arranged in a treatment region (3), a transport unit (10) transports a fermentation product (S) discharged from the fermentation device (2) after the fermentation raw material has been fermented to the treatment region (3), and a release unit (51) releases the fermentation product (S) from the transport unit (10). The release unit (51) is configured so as to release the fermentation product (S) from a position above the plant (P) to be treated disposed in the treatment region (3) toward the plant (P) to be treated.

Description

Technical Field

[0001] The present invention relates to a system for effectively treating liquid waste containing organic matter, for example, water-rich excrement of livestock such as dairy cows. Background Art

[0002] The inventors have invented a reduced-pressure fermentation and drying device, which, as described in Patent Document 1, stores livestock excrement in a sealed container such as a can, and reduces the pressure in the sealed container and heats it to a specified temperature range while stirring it, thereby effectively removing moisture from the excrement stored in the sealed container and drying the excrement, and adding specified microorganisms to the livestock excrement treated in this way to promote the fermentation of the excrement.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Publication No. 2020-65979 Summary of the invention

[0006] -Technical problem to be solved by the invention-

[0007] However, in the above-mentioned existing excrement treatment system, it is difficult to dry a large amount of excrement with a lot of water. In addition, due to the long-term use of the dryer, the running cost may become high. In addition, in the system described in the above-mentioned patent document 1, in order to carry out a large amount of treatment, a plurality of reduced pressure fermentation drying devices are required, and the equipment investment may become high.

[0008] The present invention is completed in consideration of the above-mentioned actual situation, and its purpose is to provide a treatment system for liquid waste containing organic matter, which can naturally and massively ferment and dry liquid waste containing organic matter, thereby reducing operating costs and suppressing equipment investment.

[0009] -Technical solutions to solve technical problems-

[0010] In order to solve the above technical problems, the invention disclosed in this specification is constituted as follows. That is, the first aspect of the invention is characterized in that: a treatment system for liquid waste containing organic matter includes a fermentation device, a treatment area, a conveying part and a releasing part, the fermentation device includes a closed container, a storage part decompression part, a storage part heating part and a stirring device, the closed container has a storage part for storing liquid waste containing organic matter, that is, fermentation raw materials, the storage part decompression part decompresses the storage part, the storage part heating part heats the storage part, the stirring device has a stirring member for stirring the fermentation raw materials in the storage part, the fermentation device decomposes the organic components of the fermentation raw materials by microorganisms to generate fermentation products from the fermentation raw materials, and discharges the generated fermentation products, the treatment target plant used as bedding is arranged in the treatment area, the conveying part conveys the fermentation product discharged from the fermentation device toward the treatment area, the releasing part releases the fermentation product from the conveying part, and the releasing part is configured to release the fermentation product from a position above the treatment target plant arranged in the treatment area toward the treatment target plant.

[0011] According to the first aspect of the invention, by fermenting liquid waste containing organic matter with a fermentation device, a fermentation product containing a large number of microorganisms can be produced, and the microorganisms are useful for efficiently fermenting and drying the target plants. In addition, by releasing the fermentation product from a position above a large number of target plants arranged in a treatment area, the fermentation product can be infiltrated into the entire target plants while the fermentation product passes through the target plants from top to bottom due to the action of gravity. Thus, a treatment system can be provided, which can ferment and dry liquid waste containing organic matter in large quantities, thereby reducing operating costs and suppressing equipment investment.

[0012] The second aspect of the invention is based on the first aspect of the invention, and is characterized in that: the processing area includes a collecting bottom, the processing object plant is arranged on the collecting bottom, the collecting bottom collects the filtrate of the fermentation product that falls downward from the processing object plant after passing through the processing object plant, and stores the filtrate in a storage tank.

[0013] According to the second aspect of the invention, the liquid portion of the fermentation product falls downward from the treatment target plant after passing through the treatment target plant. Thus, the collecting bottom can promote the drying of the treatment target plant. In addition, while the fermentation product is passing through the treatment target plant from top to bottom, the solid portion present in the fermentation product can be hung on the treatment target plant so that it remains in the treatment target plant. And, the filtrate obtained by filtering the fermentation product can be collected in the storage tank using the collecting bottom. Thus, the filtrate can be stored in the storage tank. By allowing the filtrate stored in the storage tank to flow through the treatment target plant again from top to bottom, the filtrate can be fermented, dried, and disappeared.

[0014] The invention of the third aspect is based on the invention of the second aspect, and is characterized in that: the collection bottom has a first polygonal inclined plane portion and a second polygonal inclined plane portion, and the first polygonal inclined plane portion has a common side portion shared with the second polygonal inclined plane portion. The common side portion is inclined relative to a horizontal plane, and one end of the common side portion is formed as the lowest part of the collection bottom, and the storage tank is arranged near the lowest part.

[0015] According to the third aspect of the invention, if the treatment target plant is arranged at any position on the collecting bottom, the filtrate passing through the treatment target plant from the top to the bottom is temporarily collected at the common edge shared by the first polygonal inclined plane portion and the second polygonal inclined plane portion. In addition, the filtrate collected at the common edge can be smoothly guided to the lowest part of the collecting bottom and stored in the storage tank. Therefore, even when the treatment target plant is arranged at any position on the collecting bottom, the drying of the treatment target plant can be promoted. As a result, the degree of freedom of the arrangement location of the treatment target plant in the treatment area is improved. In addition, by allowing the filtrate stored in the storage tank to flow through the treatment target plant again from the top to the bottom, the filtrate can be fermented, dried, and disappeared.

[0016] The fourth aspect of the invention is based on the second or third aspect of the invention, and is characterized in that: the treatment system for liquid waste containing organic matter includes a repeated spraying flow path, and the repeated spraying flow path is used to spray the filtrate stored in the storage tank toward the treatment target plant from a spray nozzle located above the treatment target plant, and a liquid delivery pump is provided in the middle of the repeated spraying flow path, and the liquid delivery pump is used to transport the filtrate from the storage tank to the spray nozzle.

[0017] According to the fourth aspect of the invention, since the filtrate can be repeatedly passed through the treatment target plant from top to bottom, more microorganisms contained in the filtrate can be attached to the treatment target plant, and the fermentation and drying speed of the treatment target plant can be increased.

[0018] - Effects of the Invention -

[0019] According to the treatment system of organic-containing liquid waste according to the present invention, organic-containing liquid waste can be naturally fermented and dried in large quantities, so that a treatment system of organic-containing liquid waste with low running cost and suppressed equipment investment can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 1 is a schematic plan view showing the overall situation of a system for treating liquid waste containing organic matter according to an embodiment of the present invention;

[0021] Figure 2 is an overall structural diagram of a system for treating liquid waste containing organic matter according to the present embodiment;

[0022] Figure 3 Schematically shows the overall structure of a fermentation device included in the system for treating liquid waste containing organic matter according to the present embodiment;

[0023] Figure 4 This is an explanatory diagram showing the state of the plants to be treated after being treated in the treatment system for liquid waste containing organic matter according to the present embodiment. DETAILED DESCRIPTION

[0024] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0025] Figure 1 It is a schematic plan view showing the entirety of a system 1 for treating liquid waste containing organic matter according to the present embodiment. Figure 2 1 is an overall configuration diagram of a system 1 for treating liquid waste containing organic matter according to the present embodiment. Figure 3 This is a diagram schematically showing the overall schematic configuration of a fermentation device 2 included in a system 1 for treating liquid waste containing organic matter according to the present embodiment. Figure 4 1 is an explanatory diagram showing the state of the plant P to be treated after being treated in the treatment system 1 for liquid waste containing organic matter according to the present embodiment. Figure 1 to Figure 3 In the embodiment, the treatment system 1 for liquid waste containing organic matter includes: a fermentation device 2, a treatment area 3, a boiler 4, a cooling tower 5, a fermentation raw material input hopper 6, a liquid fermentation raw material input tank 7, a conveying part 10 and a release part 51.

[0026] The fermentation raw material input hopper 6 is a place where the feces and urine mixture of livestock such as dairy cows or organic sludge is temporarily stored as fermentation raw materials. The feces and urine mixture is put into the fermentation raw material input hopper 6 by, for example, a dump truck T that transports the feces and urine mixture from a livestock shed. The target livestock include, for example, dairy cows, pigs, sheep, chickens, etc., but are not particularly limited. The fermentation raw material input hopper 6 has a crushing screw 6a. The crushing screw 6a crushes the large pieces of the feces and urine mixture that is put in and makes it fine.

[0027] The fermentation raw material input hopper 6 is connected to the fermentation device 2 through the first input side conveyor 11, the second input side conveyor 12, the third input side conveyor 13 and the fourth input side conveyor 14. The first input side conveyor 11, the second input side conveyor 12, the third input side conveyor 13 and the fourth input side conveyor 14 are part of the conveying section 10. The slurry fermentation raw material is supplied from the fermentation raw material input hopper 6 to the fermentation device 2 through the above-mentioned multiple input side conveyors. When viewed from above, each input side conveyor transports the fermentation raw material in a straight line. The input side conveyors are combined in a manner that is orthogonal to each other in the length direction in the order of the first input side conveyor 11, the second input side conveyor 12, the third input side conveyor 13 and the fourth input side conveyor 14 starting from the side close to the fermentation raw material input hopper 6.

[0028] The liquid fermentation raw material input tank 7 temporarily stores urine with a particularly low solid content in a mixture of feces and urine of livestock such as dairy cows as a liquid fermentation raw material. The liquid fermentation raw material input tank 7 is connected to the fermentation device 2 through a liquid fermentation raw material liquid feeding pipe 9. A raw material liquid feeding pump 8 is provided in the middle of the liquid fermentation raw material liquid feeding pipe 9. The liquid fermentation raw material is supplied from the liquid fermentation raw material input tank 7 to the fermentation device 2 by the operation of the raw material liquid feeding pump 8.

[0029] The fermentation device 2 is a device that uses microorganisms to decompose the organic components of the fermentation raw materials. Figure 3 As shown, the fermentation device 2 includes a closed container 21 , a stirring device 22 and a condensation unit 23 .

[0030] The sealed container 21 is formed by, for example, using a pressure-resistant tank that is approximately cylindrical. The sealed container 21 stores a mixture of livestock feces and urine or organic sludge, i.e., fermentation raw materials, in a storage section 21d. In addition, in the storage section 21d of the sealed container 21, decompression is performed by a storage section decompression section described later and heating is performed by a storage section heating section described later. The sealed container 21 is formed in an airtight state so that the storage section 21d is kept below atmospheric pressure. A heating jacket 24 is provided on the peripheral wall portion of the sealed container 21. The heating jacket 24 is connected to the boiler 4 via a heating steam supply path that is omitted from the figure. The heating steam generated in the boiler 4 is supplied to the heating jacket 24. The above-mentioned storage section heating section is composed of the heating jacket 24 and the boiler 4.

[0031] A fermentation raw material inlet 21a is provided at the upper portion of the sealed container 21. The fermentation raw material inlet 21a is connected to the fourth conveyor 14 on the inlet side. The fermentation raw material conveyed from the fermentation raw material inlet hopper 6 or the liquid fermentation raw material inlet tank 7 is put into the fermentation raw material inlet 21a. In addition, a guide portion 21c is protrudingly provided at the upper portion of the sealed container 21. The guide portion 21c is respectively provided at one end side and the other end side in the length direction of the sealed container 21. The guide portion 21c guides the steam generated from the heated fermentation raw material toward the condensation portion 23. In addition, a fermentation product discharge port 21b for discharging the fermentation product S generated after the fermentation raw material is fermented is provided at the lower portion of the rear wall of the sealed container 21.

[0032] The stirring device 22 includes a stirring shaft 22a, a stirring plate 22b, and an electric motor 22c. The stirring shaft 22a extends in the longitudinal direction of the sealed container 21 in the storage portion 21d of the sealed container 21. A plurality of stirring plates 22b as stirring members are provided on the stirring shaft 22a in a manner separated from each other in the axial direction of the stirring shaft 22a. The electric motor 22c drives the stirring shaft 22a to rotate at a predetermined rotation speed.

[0033] After the fermentation raw material is introduced from the fermentation raw material introduction port 21a, the fermentation raw material is stirred by the stirring shaft 22a and the stirring plate 22b that are driven and rotated, and is heated by the heat of the heating steam supplied to the heating jacket 24. In addition, the fermentation raw material is transported to the fermentation product discharge port 21b along the longitudinal direction of the closed container 21 while being heated and stirred.

[0034] Microorganisms are added to the fermentation raw materials in the sealed container 21. As the added microorganisms, a composite effective microorganism group obtained by pre-culturing a plurality of indigenous bacteria is preferred. That is, the so-called SHIMOSE 1, SHIMOSE 2, and SHIMOSE 3 groups occupy the majority of the colonies. It should be noted that SHIMOSE 1 is FERM BP-7504 (internationally deposited at the Patent Microorganism Depository of the Institute of Biotechnology, National Institute of Advanced Industrial Science and Technology, Ministry of Economy, Trade and Industry of Japan (1-1-3 Higashi 1-chome, Tsukuba City, Ibaraki Prefecture, Japan) on March 14, 2003). SHIMOSE 2 is FERM BP-7505 (internationally deposited in the same manner as SHIMOSE 1), which is a microorganism belonging to Pichia farinosa that is resistant to salt. SHIMOSE 3 is FERM BP-7506 (internationally deposited in the same manner as SHIMOSE 1), which is a microorganism belonging to the genus Staphylococcus.

[0035] The condensation section 23 is connected to the guide section 21c of the closed container 21 through a connecting pipe 26. The condensation section 23 includes a plurality of cooling pipes 23b supported by a pair of head sections 23a. The cooling water in the cooling pipes 23b is heated to a high temperature by heat exchange with the steam entering the condensation section 23 from the guide section 21c. The high-temperature cooling water in the cooling pipes 23b is cooled in the cooling tower 5. A cooling water passage 5a is provided between the cooling pipes 23b and the cooling tower 5.

[0036] The cooling tower 5 has a water receiving tank 5b, an extraction pump 5c, a nozzle 5d, a flow-down portion 5e, and a fan 5f. The cooling water discharged from the condensation portion 23 flows into the water receiving tank 5b. The extraction pump 5c extracts cooling water from the water receiving tank 5b. The nozzle 5d sprays the extracted cooling water toward the flow-down portion 5e. While the cooling water flows downward in the flow-down portion 5e, the fan 5f blows air toward the flow-down portion 5e. The cooling water receives the air blown from the fan 5f, and its temperature is lowered. After the cooling water flows down from the flow-down portion 5e, it flows into the water receiving tank 5b again.

[0037] The cooling water cooled by the cooling tower 5 is transported by the cooling water pump 5g and returned to the condensation section 23 through the cooling water passage 5a. The cooling water returned to the condensation section 23 exchanges heat with the steam of the fermentation raw material while flowing in the plurality of cooling pipes 23b, so that its temperature rises. The cooling water after the temperature rise flows into the cooling tower 5 again through the cooling water passage 5a. That is, the cooling water circulates in the cooling water passage 5a provided between the condensation section 23 and the cooling tower 5.

[0038] The steam generated from the heated fermentation raw material is condensed in the condensation section 23. In the cooling tower 5, in addition to the cooling water circulated as described above, condensed water condensed in the condensation section 23 is also injected. Specifically, a connecting passage 28 is connected to the condensation section 23. The condensed water generated in the condensation section 23 is retained inside the condensation section 23 and the connecting passage 28. A vacuum pump 25 is connected to the connecting passage 28. The vacuum pump 25 acts as the above-mentioned storage section decompression section that decompresses the storage section 21d of the closed container 21. Therefore, the vacuum pump 25 works to suck out the air and condensed water from the condensation section 23 via the connecting passage 28. In addition, the vacuum pump 25 guides the air and steam in the storage section 21d to the condensation section 23 via the guide section 21c and the connecting pipe 26. The condensed water sucked out from the condensation section 23 by the vacuum pump 25 is guided to the water receiving tank 5b of the cooling tower 5 through the water guide pipe not shown in the figure.

[0039] The condensed water guided to the water receiving tank 5b of the cooling tower 5 is mixed with the cooling water and cooled. It should be noted that since the condensed water contains the same microorganisms as those in the fermentation raw materials added to the storage part 21d, the odor components contained in the condensed water are decomposed by the microorganisms. Therefore, the odor contained in the condensed water will not be emitted to the outside of the closed container 21.

[0040] The fermentation device 2 is constructed as described above. The fermentation raw material introduced from the fermentation raw material inlet 21a of the closed container 21 is heated by the heating jacket 24, which has been heated by the heating steam of the boiler 4. In addition, the storage section 21d of the closed container 21 is depressurized by the operation of the vacuum pump 25, and the boiling point of water is lowered due to the decompression effect. As a result, the storage section 21d is maintained at 50°C to 60°C, and the water contained in the fermentation raw material boils. In addition, the fermentation of the fermentation raw material is promoted by stirring the stirring plate 22b of the stirring device 22.

[0041] like Figure 2 As shown, when the fermentation product S generated after the fermentation raw material is fermented is sprayed on the treatment target plants P such as wheat straw and sawdust, the above-mentioned treatment target plants P can be used as bedding after fermentation and drying. The fermentation product S is rich in microorganisms and is in a slurry state. Compared with the state of the fermentation raw material, the fermentation product S can promote the fermentation of wheat straw and sawdust. As the treatment target plants P, for example, wheat straw and sawdust can be listed, but it is not limited to this. The treatment target plants P are arranged in the treatment area 3.

[0042] like Figure 1 As shown, the processing area 3 is a rectangular area when viewed from above. The processing area 3 is arranged next to the device area E, which is an area that is approximately square when viewed from above and in which the fermentation device 2, boiler 4, cooling tower 5, fermentation raw material feeding bucket 6, etc. are arranged. One short side of the rectangle of the processing area 3 when viewed from above is connected to the device area E. The processing area 3 has a collection bottom 31 that is rectangular when viewed from above. The collection bottom 31 has a first polygonal inclined plane portion 32 and a second polygonal inclined plane portion 33. The above-mentioned polygonal inclined plane portions 32 and 33 are both polygonal planes inclined relative to the horizontal plane. The first polygonal inclined plane portion 32 and the second polygonal inclined plane portion 33 in this embodiment are respectively triangular planes. It should be noted that the first polygonal inclined plane portion 32 and the second polygonal inclined plane portion 33 are not limited to triangles, but can also be polygons larger than quadrilaterals. The first polygonal inclined plane portion 32 has a common side portion 31a shared with the second polygonal inclined plane portion 33. The common side portion 31a is inclined relative to the horizontal plane.

[0043] The common side portion 31a is formed on the diagonal line of the collecting bottom 31 which is rectangular when viewed from above. The common side portion 31a is formed such that one end portion close to the device area E becomes the lowest portion of the collecting bottom 31, and the other end portion away from the device area E becomes the highest portion of the collecting bottom 31. The first polygonal inclined plane portion 32 and the second polygonal inclined plane portion 33 are respectively shaped to be inclined downward toward the common side portion 31a. It should be noted that the highest portion of the above-mentioned collecting bottom 31 is formed on the peripheral portion of the collecting lower portion 31 and is at the same height as the bottom of the device area E.

[0044] A discharge-side final conveyor 17 is arranged on the collection bottom 31, which is linear in a plan view. The discharge-side final conveyor 17 is arranged in parallel with the long side of the collection bottom 31, which is rectangular in a plan view. The discharge-side final conveyor 17 enters the processing area 3 from the device area E and extends to the vicinity of the end of the processing area 3 on the opposite side of the device area E. The discharge-side final conveyor 17 is arranged at a predetermined height from the collection bottom 31 by omitting a plurality of columns shown in the figure. The discharge-side final conveyor 17 is connected to the fermentation device 2 of the device area E through the discharge-side first conveyor 15, which is linear in a plan view, and the discharge-side second conveyor 16, which is linear in a plan view. The discharge-side first conveyor 15, the discharge-side second conveyor 16, and the discharge-side final conveyor 17 are part of the conveying unit 10. The discharge-side first conveyor 15, the discharge-side second conveyor 16, and the discharge-side final conveyor 17 convey the fermentation product S discharged from the fermentation device 2 after the fermentation of the fermentation raw material to the processing area 3.

[0045] like Figure 1 and Figure 2 As shown, a plurality of (four in the present embodiment) release portions 51 are installed at predetermined intervals on the discharge-side final conveyor 17. The release portion 51 is formed, for example, of a flexible hose. The release portion 51 is arranged to hang downward from the discharge-side final conveyor 17. The release portion 51 releases the fermentation product S from the discharge-side final conveyor 17. The treatment target plant P is arranged on the collection bottom 31 of the treatment area 3 along the discharge-side final conveyor 17. The fermentation product S is released toward the treatment target plant P from a position above the treatment target plant P arranged on the collection bottom 31.

[0046] A storage tank 41 is disposed near the lowest portion of the collecting bottom portion 31. The collecting bottom portion 31 collects the filtrate L of the fermentation product S that falls downward from the processing target plant P after passing through the processing target plant P and stores the filtrate L in the storage tank 41.

[0047] The treatment system 1 for liquid waste containing organic matter of the present embodiment includes a repeated spraying flow path 35. The repeated spraying flow path 35 is provided to repeatedly spray the filtrate L stored in the storage tank 41 toward the treatment target plant P from the upper position of the treatment target plant P. Specifically, the repeated spraying flow path 35 includes: a first pipe 36 extending along the boundary between the device area E and the treatment area 3, a second pipe 37, a third pipe 38, and a fourth pipe 39 branched from the first pipe 36. The second pipe 37, the third pipe 38, and the fourth pipe 39 are parallel to the long sides of the rectangular collecting bottom 31 in a plan view, and are arranged at a predetermined height from the collecting bottom 31. In addition, the second pipe 37, the third pipe 38, and the fourth pipe 39 extend to the vicinity of the end of the treatment area 3 on the opposite side of the device area E. In addition, a plurality of spray nozzles 35a are provided at predetermined intervals on the second pipe 37, the third pipe 38, and the fourth pipe 39.

[0048] A liquid delivery pump 42 for delivering the filtrate L from the storage tank 41 to the spray nozzle 35a is provided in the middle of the repeated spraying flow path 35. The filtrate L stored in the storage tank 41 is repeatedly sprayed toward the target plant P from the spray nozzle 35a located above the target plant P.

[0049] In the processing area 3 of the present embodiment, one discharge-side final conveyor 17 and three pipes, namely, a second pipe 37, a third pipe 38, and a fourth pipe 39 branching from a first pipe 36, are arranged. The plants P to be processed are arranged in the processing area 3 along the discharge-side final conveyor 17, the second pipe 37, the third pipe 38, and the fourth pipe 39. The arrangement of the plants P to be processed is performed using a wheel loader H.

[0050] When a new plant P to be treated enters the treatment area 3, the wheel loader H first arranges the new plant P to be treated along the final conveyor 17 on the discharge side. Then, the slurry-like fermentation product S is released from the upper position of the plant P to be treated toward the plant P to be treated. After the fermentation product S is fully infiltrated into the plant P to be treated, the wheel loader H rearranges the plant P to be treated in a manner along any one of the second pipe 37, the third pipe 38, and the fourth pipe 39. Then, the filtrate L of the fermentation product S is repeatedly sprayed onto the plant P to be treated from the spray nozzle 35a located above the plant P to be treated. The time for repeatedly spraying the filtrate L of the fermentation product S onto the plant P to be treated is set to a prescribed first time. And, after the prescribed time has passed, a prescribed second time is set as a drying time. In addition, the process of spraying the filtrate L onto the plant P to be treated for the first time and the process of drying the plant P to be treated for the second time are repeated alternately. Through this repeated process, the plant P to be treated is efficiently fermented. Finally, as Figure 4 As shown, the treated plant P changes from a hard state before treatment to a soft and fine high-quality bedding B.

[0051] The embodiments disclosed herein are examples in all aspects and do not constitute a basis for restrictive interpretation. The technical scope of the present invention is not only explained by the above embodiments, but also should be defined based on the records of the claims. The technical scope of the present invention includes all changes within the meaning and scope equivalent to the claims.

[0052] -Industry Application Fields-

[0053] The present invention can be applied to a system that effectively treats liquid waste containing organic matter, for example, water-rich excrement of livestock such as dairy cows.

[0054] - Explanation of symbols -

[0055] 1 Treatment system for liquid waste containing organic matter

[0056] 2 Fermentation equipment

[0057] 3 Processing area

[0058] 10. Transmission Department

[0059] 21 Sealed container

[0060] 21d Storage Department

[0061] 22. Stirring device

[0062] 22b Stirring plate (stirring part)

[0063] 31 Collect bottom

[0064] 31a Shared edge

[0065] 32 first polygonal inclined plane portion

[0066] 33 second polygonal inclined plane portion

[0067] 35 Repeat spray flow path

[0068] 35a Spray nozzle

[0069] 41 Storage tank

[0070] 42 Liquid delivery pump

[0071] 51 Release

[0072] L Filtrate

[0073] S Fermentation products

[0074] P Plants to be treated

Claims

1. A system for treating liquid waste containing organic matter, characterized in that: The treatment system for liquid waste containing organic matter comprises a fermentation device, a treatment area, a conveying part and a releasing part. The fermentation device comprises a sealed container, a storage portion decompression portion, a storage portion heating portion and a stirring device, wherein the sealed container has a storage portion for storing liquid waste containing organic matter, the storage portion decompression portion decompresses the storage portion, the storage portion heating portion heats the storage portion, and the stirring device has a stirring component for stirring the liquid waste containing organic matter in the storage portion. The fermentation device decomposes the liquid waste containing organic matter by using microorganisms and discharges fermentation products generated from the liquid waste containing organic matter. The plants to be treated as bedding are arranged in the treatment area. The conveying unit conveys the fermentation product discharged from the fermentation device toward the processing area. The releasing part releases the fermentation product from the conveying part. The release unit is configured to release the fermentation product from a position above the treatment target plant arranged in the treatment area toward the treatment target plant.

2. The system for treating liquid waste containing organic matter according to claim 1, characterized in that: The treatment area includes a collecting bottom, and the treatment target plants are arranged on the collecting bottom. The collecting bottom collects the filtrate of the fermentation product that has fallen downward from the plant to be treated after passing through the plant to be treated, and stores the filtrate in a storage tank.

3. The system for treating liquid waste containing organic matter according to claim 2, characterized in that: The collecting bottom has a first polygonal inclined plane portion and a second polygonal inclined plane portion, The first polygonal inclined plane portion has a common side portion shared with the second polygonal inclined plane portion, The common side portion is inclined relative to the horizontal plane, and one end of the common side portion is formed as the lowest part of the collecting bottom. The storage tank is arranged near the lowest portion.

4. The system for treating liquid waste containing organic matter according to claim 2 or 3, characterized in that: The system for treating liquid waste containing organic matter comprises a repeated spraying flow path for spraying the filtrate stored in the storage tank toward the treatment target plant from a spraying nozzle located above the treatment target plant. A liquid feeding pump is provided in the middle of the repeated spraying flow path, and the liquid feeding pump is used to feed the filtrate from the storage tank to the spraying nozzle.

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