Waste disposal system

Abstract

This invention provides a waste treatment system that enables efficient storage and utilization of products after fermentation and drying. [Solution] The fermentation drying apparatus 3 has a containment container 31 and a heating jacket 33 and ferments and dries the organic components of the waste placed in the containment container 31; a boiler 8 supplies steam to the heating jacket 33 to heat the containment container 31; and a compression packaging apparatus 6 compresses and packages the first product S1 to form a package 7 of the first product S1. The boiler 8 is configured to generate steam using the package 7 as fuel.

Description

Technical Field

[0004] , , , , ,

[0001] The present invention relates to a waste treatment system for realizing energy savings.

Background Art

[0002] Conventionally, various waste treatment systems have been proposed for performing energy-saving fermentation drying treatment on waste containing organic components such as food waste (see, for example, Patent Document 1). Patent Document 1 discloses a treatment device for organic waste including a fermentation drying device, a steam generation boiler, and a steam generator. The fermentation drying device performs a reduced-pressure fermentation treatment on the organic waste. The dried product obtained by this reduced-pressure fermentation treatment is supplied to the boiler as fuel after foreign substances such as metals are removed. The boiler generates steam using the combustion energy of the dried product. The steam generated by the boiler is supplied as heating steam to the heating jacket of the fermentation drying device and used for heating the waste storage container of the fermentation drying device. The treatment device of Patent Document 1 effectively utilizes the product as fuel for the boiler after drying the waste in the fermentation drying device. Thereby, the treatment device of Patent Document 1 realizes energy savings.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in conventional waste treatment systems such as those described in Patent Document 1, the amount of product generated from waste through fermentation drying in the fermentation drying apparatus was not equal to the amount of fuel required in the boiler to produce the product. Therefore, if the amount of product generated in the fermentation drying apparatus was greater than the amount of fuel required in the boiler, it became necessary to temporarily store the product. However, since the product is easily dispersed, storage was difficult.

[0005] This invention has been made in consideration of the above circumstances, and its purpose is to provide a waste treatment system that enables efficient storage and utilization of the product after fermentation and drying treatment. [Means for solving the problem]

[0006] To solve the above-mentioned problems, the invention disclosed herein is configured as follows: The present invention comprises a fermentation drying apparatus having a containment container and a heating unit for fermenting and drying the organic components of waste placed in the containment container; a boiler for supplying steam to the heating unit for heating the containment container; and a compression packaging apparatus for compressing and packaging the product of the fermentation drying apparatus to form a package of the product, wherein the boiler is configured to generate steam using the package as fuel (first configuration).

[0007] According to the above configuration, the compression packaging device compresses and packages the product of the fermentation drying device to form a package of the product, and the boiler generates steam using this package as fuel. This allows the product to be temporarily stored in package units when the amount of product produced exceeds the amount of fuel used by the boiler. The package prevents the product from scattering during storage and transportation by enclosing the easily scattered product in packaging material. This results in superior hygiene and safety. Furthermore, the package can be easily transported by industrial vehicles such as forklifts or ordinary trucks. In addition, the package can be easily stacked and stored by industrial vehicles, improving storage capacity. Moreover, by enclosing the product in packaging material, moisture can be prevented from adhering to the dry product, improving combustion efficiency when used as fuel for the boiler. As a result, this becomes a waste treatment system that enables efficient storage and utilization of the product.

[0008] In the first configuration described above, it is also preferable that the waste treatment system is configured to include a sorting device that separates the product into a first product consisting of plastics and a second product consisting of fermented and dried organic matter, and to supply the first product to the compression packaging device to form the package (second configuration).

[0009] According to the above configuration, the boiler fuel can be made to contain only plastics, excluding organic matter such as highly biodegradable food that was used before the reduced-pressure fermentation process. This allows for the removal of salt contained in organic matter such as food that is unsuitable as boiler fuel, while utilizing plastics, which are a high-quality fuel. This can improve the combustion efficiency of the boiler.

[0010] In the second configuration described above, it is also preferable that the compression packaging device has a weighing unit for weighing the first product, and that the packaging body is formed from a predetermined amount of the first product after weighing in the weighing unit (third configuration).

[0011] The above configuration allows for the uniformity of the quantity of each package. This makes it easy to control the amount of product from the packages that is fed into the boiler as fuel.

[0012] In the second or third configuration described above, the compression packaging apparatus may also preferably include: a compression means for compressing the aggregate of the first product to form a compressed aggregate in a compression space; a guide tube for forming an extrusion passage for the compressed aggregate from the compression space to the outside; an extrusion means for pushing the compressed aggregate out from the tip of the guide tube; a first winding means for forming a first winding layer by winding a strip-shaped packaging member around a first axis of the guide tube onto the compressed aggregate pushed out from the tip of the guide tube; and a second winding means for forming a second winding layer by winding the strip-shaped packaging member around a second axis perpendicular to the first axis onto the compressed aggregate on which the first winding layer has been formed (fourth configuration).

[0013] According to the above configuration, the product can be securely and evenly packaged with the packaging material. This reduces the risk of the product leaking from gaps during transportation of the package.

[0014] In any of the first to fourth configurations described above, it is also preferable that the waste treatment system is equipped with a steam generator that generates electricity using steam generated by the boiler as a power source, and the fermentation drying apparatus is equipped with a stirring means for stirring the contents of the containment container, and that the electricity generated by the steam generator is supplied as a power source for the stirring means (fifth configuration).

[0015] According to the above configuration, electricity generated by a steam generator can be used to drive the stirring mechanism of the fermentation and drying apparatus. Since the steam used in the steam generator is generated from the combustion energy of the product (packaged material) of the fermentation and drying apparatus, it is possible to achieve greater energy savings compared to supplying electricity to the stirring mechanism from a separate power source. [Effects of the Invention]

[0016] According to the waste treatment system of the present invention, efficient storage and utilization of the product after fermentation and drying treatment become possible. [Brief explanation of the drawing]

[0017] [Figure 1] Figure 1 is a block diagram showing the overall configuration of a waste treatment system according to one embodiment of the present invention. [Figure 2] Figure 2 shows a schematic configuration of the fermentation and drying apparatus and its surroundings included in the waste treatment system of this embodiment. [Figure 3] Figure 3 is a plan view showing a compression packaging device included in the waste treatment system of this embodiment. [Figure 4] Figure 4 is a perspective view of the main components of a compression packaging device. [Figure 5] Figure 5 is a perspective view of the main components showing the operation of the compression packaging device, illustrating the operation as the process progresses from Figure 4. [Figure 6] Figure 6 is a perspective view of the main components showing the operation of the compression packaging device as the process progresses from Figure 5. [Figure 7] Figure 7 is a perspective view of the main components showing the operation of the compression packaging device as the process progresses from Figure 6. [Modes for carrying out the invention]

[0018] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Figure 1 is a block diagram showing the overall configuration of a waste treatment system 1 according to one embodiment of the present invention. As shown in Figure 1, the waste treatment system 1 of this embodiment comprises a raw material hopper 2, a fermentation drying device 3, a heat exchange device 4, a sorting device 5, a weighing unit 11, a compression packaging device 6, a boiler 8, a steam control device 9, and a steam generator 10. The fermentation drying device 3 is intended to process waste containing organic matter such as food and plastics such as containers, discharged from general households and various businesses. Such waste is transported to a facility equipped with the waste treatment system 1 by transport vehicles and first put into the raw material hopper 2. The waste put into the raw material hopper 2 is supplied to the fermentation drying device 3 by a conveyor as needed.

[0019] The fermentation drying device 3 performs a process of drying while fermenting the organic components of the waste by heating the waste under reduced pressure. By reducing the pressure, the boiling point of water is lowered to about 60°C to accelerate the evaporation of water, and at the same time, water can be evaporated at a temperature at which the microorganisms for fermentation are activated. The heat exchange device 4 is a device that exchanges heat with the steam generated from the waste heated during this process. The product S (see Figure 2) obtained by the reduced-pressure fermentation drying process is sent to the sorting device 5. The product S contains organic substances such as foods that were originally highly biodegradable and decomposed by fermentation, and plastics that are difficult to decompose. The sorting device 5 has a sieve machine and separates the product S into a first product S1 made of plastics and a second product S2 made of the fermented and dried organic substances.

[0020] The second product S2 made of organic substances contains food-derived salts, while the first product S1 made of plastics does not contain salts. The first product S1 has properties suitable as fuel. Therefore, in the waste treatment system 1, the first product S1 is effectively utilized as the fuel of the boiler 8. However, in the waste treatment system 1, in order to facilitate the storage of the first product S1, the weighing unit 11 and the compression packaging device 6 are incorporated into the system.

[0021] The weighing unit 11 measures the amount of the first product S1 input into the compression packaging device 6. For example, the weighing unit 11 has a photoelectric sensor attached to the supply pipe that supplies the first product S1 to the compression packaging device 6. The amount of the first product S1 passing through the supply pipe is measured by the photoelectric sensor. The compression packaging device 6 compresses and packages the first product S1 to form a packaging body 7 in a substantially cubic shape. Details of this compression packaging device 6 and the packaging body 7 will be described later. The packaging body 7 formed by the compression packaging device 6 is temporarily stored. For example, it is stored for about 1 to 30 days. Thereafter, the packaging body 7 is directly input into the boiler 8 as fuel or input after being bag-broken.

[0022] The boiler 8 burns the first product S1 inside the package 7, generating steam from the combustion energy. The generated steam is supplied to the heating jacket 33 (see Figure 2) of the fermentation drying apparatus 3 via the steam control device 9. The steam control device 9 adjusts the amount of steam supplied to the heating jacket 33. The steam generator 10 is a device that generates electricity using the steam generated by the boiler 8 as a power source. The electricity generated by the steam generator 10 is supplied as a power source to the stirring device 32 (see Figure 2) installed in the fermentation drying apparatus 3.

[0023] Figure 2 is a diagram showing the schematic configuration of the fermentation drying apparatus 3 and its surroundings in the waste treatment system 1 of this embodiment. The detailed structure of the fermentation drying apparatus 3 and the heat exchange apparatus 4 will be described with reference to Figure 2. The fermentation drying apparatus 3 comprises a containment container 31, a stirring device 32, and a heating jacket 33 as a heating section. The containment container 31 has a cylindrical peripheral wall portion 311 and a pair of end wall portions 312, 312 that close the open end of the peripheral wall portion 311. The containment container 31 is arranged such that the central axis of the peripheral wall portion 311 extends in the horizontal direction. Inside the containment container 31, surrounded by the peripheral wall portion 311 and the pair of end wall portions 312, 312, a containment section 316 for containing waste is formed. The peripheral wall portion 311 has a substantially elliptical cross-sectional shape. A waste input port 313 is provided at the upper part of the longitudinal center of the peripheral wall portion 311. Furthermore, connecting pipes 315 are provided at one end and the other end of the container 31 in the longitudinal direction of the peripheral wall portion 311. A product discharge port 314 for discharging the product S after processing the introduced waste is provided on one side of the pair of end wall portions 312, 312.

[0024] The agitator 32 is provided for agitating the waste in the containment section 316. The agitator 32 has an agitator shaft 321, a plurality of agitator blades 323, and an electric motor 322. Both ends of the agitator shaft 321 are supported by a pair of end walls 312, 312. Multiple agitator blades 323 are attached to the agitator shaft 321 at predetermined intervals in the axial direction of the agitator shaft 321 and extending radially from the agitator shaft 321. The electric motor 322 rotates the agitator shaft 321 in the forward or reverse direction. The electric motor 322 is driven by electricity supplied from the steam generator 10.

[0025] The heating jacket 33 is provided to heat the containment section 316. The heating jacket 33 has a jacket peripheral wall 331 that covers the peripheral wall 311. Heating steam is supplied to the heating jacket 33 from the boiler 8 through the supply pipe 81a. The heating steam supplied to the heating jacket 33 heats the peripheral wall 311 of the containment container 31, thereby heating the waste in the containment section 316. The heating steam supplied to the heating jacket 33 condenses into condensate through heat exchange. This condensate is returned to the boiler 8 through the return pipe 81b connected to the heating jacket 33.

[0026] The heat exchanger 4 is a device that exchanges heat with steam generated from waste heated in the containment section 316. The heat exchanger 4 comprises a condenser 41, a vacuum pump 42, a cooling water pump 43, a cooling tower 44, and cooling water piping 45. The condenser 41 is provided to condense the steam generated from the waste. The condenser 41 has a condensing container 411, a guide pipe 414, and a connecting section 415. The condensing container 411 is arranged adjacent to the containment container 31 and extends along the longitudinal direction of the containment container 31. The guide pipe 414 is connected to each of the ends of the condensing container 411. The connecting section 415 connects the end of the guide pipe 414 to the end of the connecting pipe 315 of the containment container 31. Steam generated from the waste in the containment section 316 is guided to the condensing container 411 through the connecting pipe 315, the connecting section 415, and the guide pipe 414. Inside the condenser 411 are a pair of heads 412, 412 and a plurality of cooling pipes 413 supported by the pair of heads 412. Cooling water piping 45 is provided between the cooling pipes 413 and the cooling tower 44.

[0027] The cooling tower 44 includes a water receiving tank 441, a pumping pump 442, a nozzle 443, a flow section 444, and a fan 445. Cooling water discharged from the condenser 41 flows into the water receiving tank 441. The pumping pump 442 pumps the cooling water from the water receiving tank 441. The nozzle 443 sprays the pumped cooling water toward the flow section 444. The fan 445 blows air toward the flow section 444 as the cooling water flows down the flow section 444. The cooling water's temperature decreases due to the airflow from the fan 445. After flowing down the flow section 444, the cooling water flows back into the water receiving tank 441. The cooling water cooled in the cooling tower 44 is pumped by the cooling water pump 43 and returned to the condenser 41 through the cooling water piping 45. The cooling water circulates through the cooling water piping 45 between the condenser 41 and the cooling tower 44.

[0028] In the cooling tower 44, condensed water, which is formed in the condensation section 41 from steam generated from heated waste, is also injected. A vacuum pump 42 is connected to the condensation container 411 of the condensation section 41 via a suction pipe 42a. The vacuum pump 42 depressurizes the containment section 316 of the containment container 31 and guides the condensed water accumulated in the condensation container 411 and the suction pipe 42a to the water receiving tank 441 of the cooling tower 44.

[0029] The waste material introduced into the container 31 through the inlet 313 is heated by the heating jacket 33 and stirred by the rotation of the stirring blades 323 of the stirring device 32. After a predetermined time has elapsed, the waste material is discharged from the product discharge port 314 as product S after vacuum fermentation drying treatment.

[0030] Next, the configuration of the compression packaging device 6 will be described in detail. Figure 3 is a plan view showing the compression packaging device 6 provided in the waste treatment system 1 of this embodiment. Figure 4 is a perspective view of the main part of the compression packaging device 6. As shown in Figures 3 and 4, the compression packaging device 6 includes an input section 61, a compression extruder 62, a first winding machine 63, a second winding machine 64, a discharge conveyor 65, and a control device 66. The compression extruder 62 has a compression cylinder 621, an extrusion cylinder 624, and a guide cylinder 627. The compression cylinder 621 has a rectangular cross-section. The compression cylinder 621 extends horizontally. The tip of the compression cylinder 621 is closed by a wall perpendicular to its axis. The input section 61 is connected to the center of the upper wall of the compression cylinder 621.

[0031] A rectangular parallelepiped-shaped region extending a predetermined length in front of the tip of the compression cylinder 621 is set as the compression space P. A compression cylinder 622 and a compression plate 623 are arranged inside the compression cylinder 621 as compression means. The compression cylinder 622 is arranged to extend in the axial direction of the compression cylinder 621. The compression plate 623 is attached to the tip of the piston rod of the compression cylinder 622. The stroke of the compression cylinder 622 is set so that, at its furthest forward position when the front surface of the compression plate 623 is at its most advanced position, it contacts the rear surface of the compression space P. The stroke of the compression cylinder 622 is also set so that, at its standby position when the front surface of the compression plate 623 is at its most retracted position, it is located behind the input section 61.

[0032] The guide tube 627 is connected to one side of the tip of the compression tube 621. As shown in Figure 4, the guide tube 627 extends along a first horizontal axis A1. The first axis A1 of the guide tube 627 is perpendicular to the axis of the compression tube 621. The guide tube 627 is positioned to be continuous with the compression space P of the compression tube 621. In other words, the guide tube 627 is positioned such that, when the compression space P is considered as a rectangular prism, it is coaxial with the axis of the compression space P and its internal space has the same cross-sectional shape as the compression space P. As shown in Figures 3 and 4, a plate-shaped partition member 628 is provided at the connection between the guide tube 627 and the compression tube 621. The partition member 628 is configured to move vertically by a lifting cylinder (not shown) to open and close the open end on the base end side of the guide tube 627.

[0033] An extrusion cylinder 624 is connected to the side of the compression cylinder 621 opposite to the guide cylinder 627 at its tip. The insides of the compression cylinder 621 and the extrusion cylinder 624 are in communication. The extrusion cylinder 624 is arranged coaxially with the axis of the compression space P and its internal space has a cross-section slightly smaller than that of the compression space P. An extrusion cylinder 625 and an extrusion plate 626 are arranged inside the extrusion cylinder 624 as extrusion means. The extrusion cylinder 625 is arranged to extend in the axial direction of the extrusion cylinder 624. The extrusion plate 626 is attached to the tip of the piston rod of the extrusion cylinder 625. The stroke of the extrusion cylinder 625 is set so that at its furthest forward position, when the front surface of the extrusion plate 626 is at its furthest forward position, it is located at the tip of the guide cylinder 627. The stroke of the extrusion cylinder 625 is also set so that at its standby position, when the front surface of the extrusion plate 626 is at its furthest backward position, it is in contact with the side surface of the compression space P. With the above configuration, the shape of the compression space P is formed at the tip of the compression cylinder 621 when the partition member 628 is closed, the compression plate 623 is in its furthest forward position, and the extrusion plate 626 is in its standby position.

[0034] The first winding machine 63 includes a base frame 631 installed on the floor, an annular slewing wheel 633, and a packaging material supply device 632. The base frame 631 has a circular opening 631a in the center. An annular support 631b is disposed on the front of the base frame 631 along the edge of the opening 631a. The slewing wheel 633 is mounted concentrically to the annular support 631b. The axis of the slewing wheel 633 coincides with the first axis A1 of the guide cylinder 627. The slewing wheel 633 is rotatable around the annular support 631b. The slewing wheel 633 is rotationally driven by a slewing motor 635.

[0035] The packaging material supply device 632 is attached to the swivel wheel 633. The packaging material supply device 632 rotates around the tip of the guide tube 627 in accordance with the rotation of the swivel wheel 633. The packaging material supply device 632 includes a first frame member 632a, a second frame member 632b, a string film roll 632c, a packaging film roll 632d, and an angle adjustment motor 634. The first frame member 632a is formed in a U-shape and is fixed to the swivel wheel 633. The second frame member 632b is rotatably supported by the first frame member 632a. The pivot axis of the second frame member 632b is set to extend radially with respect to the swivel wheel 633. The second frame member 632b is rotated by the angle adjustment motor 634 attached to the swivel wheel 633. The second frame member 632b supports the string film roll 632c and the packaging film roll 632d. The second frame member 632b is provided with rollers for feeding out the string film roll 632c and the packaging film roll 632d (not shown).

[0036] The string film roll 632c consists of a roll of wide plastic string film. The packaging film roll 632d consists of a roll of strip-shaped, stretchable plastic packaging film F. The packaging film roll 632d is used in a specific color according to on-site requirements. The string film drawn from the string film roll 632c is squeezed by a squeezing roller (not shown) to form a string-like body 636 (see Figure 5).

[0037] The second winding machine 64 includes a turntable 641 and a roller conveyor 642 and a cutter 643 positioned on the upper surface of the turntable 641. The turntable 641 is positioned in front of the guide tube 627. As shown in Figure 4, the turntable 641 rotates about a second vertical axis A2 that is perpendicular to the first axis A1 of the guide tube 627. The second axis A2 is set to be positioned on the axis of the first axis A1 of the guide tube 627. The roller conveyor 642 is positioned so that its upper surface is at approximately the same height as the bottom surface of the guide tube 627. The cutter 643 is provided to cut the packaging film F and the string-like material 636 at the end of the winding process by the turntable 641.

[0038] The discharge conveyor 65 is positioned close to the front of the turntable 641. The discharge conveyor 65 is positioned so that it is at approximately the same height as the roller conveyor 642 of the turntable 641. The control device 66 controls the overall operation of the compression packaging device 6. Specifically, the control device 66 controls the operation of the compression cylinder 622, the extrusion cylinder 625, the lifting cylinder of the partition member 628, the angle adjustment motor 634, the swivel motor 635, the turntable 641, the roller conveyor 642, the cutter 643, and the discharge conveyor 65, etc.

[0039] Figure 5 is a perspective view of the main parts showing the operation of the compression packaging device 6, and shows the operation when the process is advanced from Figure 4. Figure 6 is a perspective view of the main parts showing the operation of the compression packaging device 6 when the process is advanced from Figure 5. Figure 7 is a perspective view of the main parts showing the operation of the compression packaging device 6 when the process is advanced from Figure 6. The operation of the compression packaging device 6 will be explained with reference to Figures 4 to 7. First, as shown in Figure 4, a predetermined amount of the first product S1, measured in the metering unit 11, is fed into the compression cylinder 621 from the input unit 61. Next, as shown in Figure 5, the compression cylinder 622 operates and the compression plate 623 moves forward, pressing the aggregate of the first product S1. This pressing action gradually compresses the first product S1. When the compression plate 623 moves to its furthest forward position, the aggregate of the first product S1 is compressed in the compression space P, forming a rectangular parallelepiped-shaped compressed aggregate S11.

[0040] When the aforementioned compressed assembly S11 is formed, the first winding machine 63 operates the slewing motor 635, which rotates the slewing wheel 633. Then, the packaging film F and the string-like material 636 are fed out from the packaging material supply device 632 and wound around the tip of the guide tube 627.

[0041] Next, as shown in Figure 6, the partition member 628 opens and the extrusion cylinder 625 is activated. Then, the extrusion plate 626 moves forward and pushes the compressed assembly S11 out from the tip of the guide tube 627. The guide tube 627 serves as an extrusion passage from the compressed space P of the compressed assembly S11 to the outside. At this time, by rotating the swivel wheel 633, the packaging film F and string-like material 636 are wound around the compressed assembly S11. By spirally winding the strip-shaped packaging film F and string-like material 636 around the first axis A1 of the guide tube 627 onto the compressed assembly S11 being pushed out from the tip of the guide tube 627, the first vertical winding layer La1 is formed. When the extrusion plate 626 advances to its furthest forward position and the compressed assembly S11 is pushed out from the guide tube 627, the swivel wheel 633 stops and the partition member 628 closes. This completes the vertical winding.

[0042] Next, the roller conveyor 642 on the turntable 641 is activated, and the compressed assembly S11 with the first winding layer La1 formed moves onto the turntable 641. Then, as shown in Figure 7, the slewing motor 635 is activated, causing the packaging material supply device 632 to rotate around the radial axis of the slewing wheel 633, and the turntable 641 to rotate around the second axis A2. As a result, the packaging film F and the string-like material 636 are wound onto the compressed assembly S11. The strip-shaped packaging film F is spirally wound onto the compressed assembly S11 with the first winding layer La1 formed on it, around the second axis A2 which is perpendicular to the first axis A1, thereby forming the horizontally wound second winding layer La2. When the horizontal winding is complete, the cutter 643 cuts the packaging film F and the string-like material 636. As a result, the compressed assembly S11, which has been wound on all six sides with the packaging film F and the string-like material 636, is completed as a roughly cubic shaped package 7.

[0043] As described above, the waste treatment system 1 according to the above embodiment includes a fermentation drying device 3 having a containment container 31 and a heating jacket 33, which ferments and dries the organic components of the waste put into the containment container 31; a boiler 8 that supplies steam to the heating jacket 33 for heating the containment container 31; and a compression packaging device 6 that compresses and packages the first product S1 to form a package 7 of the first product S1. The boiler 8 is configured to generate steam using the package 7 as fuel.

[0044] According to the above configuration, when the amount of product S produced exceeds the amount of fuel used in the boiler 8, the first product S1, which consists of plastics, can be temporarily stored in package units. The package 7 prevents the easily scattered first product S1 from scattering during storage and transportation by wrapping it in packaging film F. This provides excellent hygiene and safety. Furthermore, the package 7 can be easily transported by industrial vehicles such as forklifts or ordinary trucks. In addition, the package 7 can be easily stacked and stored by industrial vehicles, improving storage capacity. Moreover, by wrapping the first product S1 in packaging film F, moisture can be prevented from adhering to the dry first product S1, thereby improving combustion efficiency when used as fuel for the boiler 8.

[0045] Furthermore, the waste treatment system 1 includes a sorting device 5 that separates the product S from the fermentation drying device 3 into a first product S1 consisting of plastics and a second product S2 consisting of fermented and dried organic matter. The system is configured to supply the first product S1 to a compression packaging device 6 to form a package 7.

[0046] According to the above configuration, the fuel for boiler 8 can be made to contain only plastics such as containers, excluding organic matter that was highly biodegradable before the vacuum fermentation process, such as food. This allows for the removal of salt contained in organic matter in food, which is unsuitable as fuel for boiler 8, while utilizing high-quality plastics. This improves the combustion efficiency of boiler 8.

[0047] Furthermore, the compression packaging device 6 has a weighing unit 11 for weighing the first product S1. The device is configured to form a package 7 from a predetermined amount of the first product S1 after weighing in the weighing unit 11.

[0048] According to the above configuration, the amount of each package 7 can be made uniform. This makes it easy to control the amount of the first product S1 in the package 7 that is fed into the boiler 8 as fuel.

[0049] Furthermore, the compression packaging apparatus 6 includes a compression cylinder 622 and a compression plate 623 that compress the aggregate of the first product S1 to form a compressed aggregate S11 in a compression space P; a guide tube 627 that forms an extrusion passage for the compressed aggregate S11 from the compression space P to the outside; an extrusion cylinder 625 and an extrusion plate 626 that push the compressed aggregate S11 out from the tip of the guide tube 627; a first winding machine 63 that forms a first winding layer La1 by winding a strip-shaped packaging film F around a first axis A1 of the guide tube 627 onto the compressed aggregate S11 pushed out from the tip of the guide tube 627; and a second winding machine 64 that forms a second winding layer La2 by winding a strip-shaped packaging film F around a second axis A2 perpendicular to the first axis A1 onto the compressed aggregate S11 on which the first winding layer La1 has been formed.

[0050] According to the above configuration, the first product S1 can be reliably and evenly packaged in the packaging film F. This reduces the risk of the first product S1 leaking out through gaps during transportation of the package 7.

[0051] Furthermore, the waste treatment system 1 is equipped with a steam generator 10 that generates electricity using steam produced by the boiler 8 as its power source. The fermentation and drying apparatus 3 is equipped with a stirring device 32 that agitates the contents of the containment container 31. The electricity generated by the steam generator 10 is supplied as the power source for the stirring device 32.

[0052] According to the above configuration, the electricity generated by the steam generator 10 can be used to drive the stirring device 32 of the fermentation drying apparatus 3. Since the steam used by the steam generator 10 is generated from the combustion energy of the first product S1 of the fermentation drying apparatus 3, energy savings can be achieved compared to supplying electricity to the stirring device 32 from a separate power source.

[0053] The embodiments disclosed herein are illustrative in all respects and are not intended to be restrictive. The technical scope of the present invention is not construed solely by the embodiments described above, but is defined by the claims. Furthermore, the technical scope of the present invention includes all modifications within the meaning and scope of equivalents to the claims.

[0054] In the above embodiment, the packaging body 7 was formed in a substantially cubic shape, but the shape of the packaging body is not limited to a rectangular parallelepiped or a cube. For example, the packaging body may be formed in a cylindrical or hexagonal prism shape. Also, in the above embodiment, the packaging film F of the packaging body 7 was wound to form a first vertically wound layer La1 and a second horizontally wound layer La2. In the present invention, the method of winding the film is not limited to this method. [Explanation of symbols]

[0055] 1. Waste disposal system 3. Fermentation and drying apparatus 6. Compression packaging device 7 Packaging 8 Boiler 10 Steam generator 11 Measuring part 31 Containment container 32 Stirring device 33. Heating jacket (heating section) 63 Volume 1 Machine 64 Volume 2 Machine 622 Compression cylinder (compression means) 623 Compression plate (compression means) 625 Extrusion cylinder (extrusion means) 626 Extruded plate (extrusion means) A1 First Axis A2 Second Axis La1 1st volume layer La2 2nd volume layer F Packing materials (packaging materials) P Compressed space S product S1 First product S2, second product S11 Compressed aggregate

Claims

1. A fermentation drying apparatus having a containment container and a heating unit, which ferments and dries the organic components of waste placed in the containment container, A boiler that supplies steam to the heating section for heating the aforementioned containment container, The system includes a compression packaging device that compresses and packages the product of the fermentation drying apparatus to form a package of the product, The boiler is configured to generate steam using the packaging as fuel. A waste treatment system characterized by the following features.

2. The sorting device is equipped to separate the aforementioned product into a first product consisting of plastics and a second product consisting of fermented and dried organic matter. The first product is supplied to the compression packaging device to form the packaged body. The waste treatment system according to claim 1, characterized in that it is the same as described in claim 1.

3. The compression packaging apparatus has a weighing unit for weighing the first product, The packaging is formed from a predetermined amount of the first product after weighing in the weighing unit. The waste treatment system according to claim 2, characterized in that it is as described above.

4. The compression packaging device is A compression means for compressing the aggregate of the first product to form a compressed aggregate in a compressed space, A guide tube that forms an extrusion passage from the compressed space of the compressed assembly to the outside, An extrusion means for pushing the compressed assembly out from the tip of the guide tube, A first winding means for forming a first winding layer by winding a strip-shaped packaging member around the first axis of the guide tube onto the compressed material aggregate pushed out from the tip of the guide tube, A second winding means for forming a second winding layer by winding the strip-shaped packaging member around a second axis perpendicular to the first axis onto the compression assembly on which the first winding layer is formed, The waste treatment system according to claim 3, characterized by comprising the following features.

5. The system includes a steam generator that uses the steam generated by the aforementioned boiler as a power source to generate electricity. The fermentation drying apparatus is equipped with stirring means for stirring the contents of the containment container, The system is configured to supply the electricity generated by the steam generator as the power source for the stirring means. A waste treatment system according to any one of claims 1 to 4.

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