JP4701351B2 - Organic waste treatment equipment - Google Patents

Description

  The present invention relates to an organic waste treatment apparatus for decomposing and treating organic waste such as garbage with microorganisms.

  Organic waste such as food and beverage residues that account for 40% of combustible waste, so-called raw garbage treatment, was often incinerated with other combustible waste, but it contains a lot of moisture. In addition to consuming a large amount of fossil fuel, dioxins generated as the combustion temperature decreases became a problem. For this reason, a method for treating garbage by utilizing microorganisms and decomposing organic substances into carbon dioxide, water, and inorganic substances has come to attract attention from the viewpoint of resource saving and pollution-free. .

Therefore, in recent years, organic waste treatment apparatuses using microorganisms have been used in the treatment of organic waste including garbage. And conventionally, as such an organic waste disposal apparatus, the one shown in Patent Document 1 has been proposed. In the organic waste processing apparatus of Patent Document 1, organic waste is crushed in an organic waste storage chamber (crushing tank), and the crushed organic waste is supplied to a fermentation decomposition chamber (fermentor) by a screw. The supplied organic waste is decomposed by stirring together with microorganisms in the fermentation decomposition chamber.
JP 2004-25170 A

  However, in the organic waste treatment apparatus described in Patent Document 1, the organic waste is crushed and then supplied to the fermentation decomposition chamber, but the organic waste is not sufficiently crushed in the organic waste storage chamber. In some cases, there is a problem that the processing efficiency of organic waste in the fermentation decomposition chamber decreases. Especially for organic waste with a lot of water, even if it is once crushed, it becomes agglomerated again in the fermenter, no matter how much it is stirred, the activity of aerobic bacteria decreases at the center of the mass, and anaerobic bacteria predominate become. The degradation by anaerobic bacteria has a problem that it is relatively easy to generate a bad odor.

  The present invention has been made paying attention to such problems. An object of the invention is to provide an organic waste processing apparatus capable of improving the processing efficiency of organic waste.

In order to achieve the above-mentioned object, the invention according to claim 1 is a method of crushing an input organic waste, a crushing tank in which the organic waste and a fungus bed are mixed, and a crushing tank. A fermenter for transferring and decomposing a mixture of the crushed organic waste and the fungus bed, a conveying means for returning the organic waste decomposed in the fermenter to the crusher again, and the organic Heat exchange means for conducting heat of decomposition generated when the waste is decomposed from a part of the fermenter to another part, and the heat exchange means has a heat medium for heat exchange of the decomposition heat. And heat exchange is performed between the heat medium and the organic waste, and the fermenter is filled with a plurality of fermentation compartments in which the organic waste is decomposed and the heat medium. The fermentation compartment and the heat exchange chamber are partition walls having thermal conductivity. Thus, the fermentation compartments are arranged so that the mixture is transferred in order from the crushing tank side, and the fermentation compartments are transferred in order from the crushing tank side. The heat exchange chamber is formed from the crushing tank side to the downstream side in the transfer direction of the mixture along each fermentation compartment, and the heat medium is inside the heat exchange chamber. by flowing to the downstream side from the crushing chamber side, and summarized in that the decomposition heat generated by the fermentation compartment of the most crushing chamber side through the heat medium is transferred to the other fermentation compartment.
According to the above configuration, not only the organic waste circulates but also the organic waste is crushed and decomposed repeatedly, so that the processing efficiency of the organic waste can be improved. Further, the heat of decomposition is conducted (moved) from the fermentation compartment (high temperature portion) closest to the crushing tank to the other fermentation compartment (low temperature portion). For this reason, the heat generated in the part where the fermentation has started earlier activates the microorganisms in the other part of the fungus uniformly, and the organic waste is efficiently decomposed.

The invention according to claim 2 is the invention according to claim 1 , wherein the heat exchange means includes a plurality of heat exchange compartments partitioned by partition walls corresponding to the plurality of fermentation compartments , and the plurality of heat exchanges. The gist is that the heat medium filled in the compartment is provided with a control means for permitting or prohibiting the circulation of the heat medium with another heat exchange compartment. According to the said structure, since heat exchange can be controlled by a control means according to the heat_generation | fever state of each fermenter, optimal temperature management is performed and organic waste comes to be decomposed | disassembled efficiently.

The gist of the invention described in claim 3 is the invention according to claim 2 , further comprising a heat medium circulation means for promoting the circulation of the heat medium filled in the plurality of heat exchange compartments. According to the said structure, it becomes possible to aim at the effective utilization of the decomposition heat | fever in fermentation by accelerating | stimulating the heat exchange in each heat exchange compartment by a heat-medium distribution | circulation means.

  ADVANTAGE OF THE INVENTION According to this invention, the organic waste processing apparatus which can improve the processing efficiency of organic waste can be provided.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Embodiments of the invention will be described below with reference to FIGS. In the description of the embodiment, unless otherwise specified, the vertical direction, the front-rear direction, and the horizontal direction in the following description are based on FIG.

  As shown in FIG. 1, the extinguishing type organic waste processing apparatus 11 crushes organic waste such as garbage that has been input, and a crushing tank 12 in which the organic waste and the fungus bed are mixed. And a fermenter 13 for fermenting and decomposing a mixture of the organic waste and the fungus bed crushed in the crusher 12.

  As shown in FIG.1 and FIG.2, the crushing tank 12 is comprised from the strong iron plate whose thickness is 20-25 mm, and is the substantially long square cylinder shape extended in an up-down direction, The opening of the upper end is organic waste and It is set as the insertion port 12a for inputting a fungus bed. A substantially square plate-like lid 14 is provided at the upper end of the crushing tank 12, and the inlet 12 a can be opened and closed by the lid 14. At the lower end of the crushing tank 12, a tapered portion 12b that is narrowed downward in the front-rear direction is provided. The opening at the lower end of the tapered portion 12b is a discharge port 12c for discharging a mixture of the crushed organic waste and the fungus bed, and a mesh member 15 having a plurality of meshes is formed in the discharge port 12c. Is provided. That is, the discharge port 12 c is covered with the mesh member 15. One mesh of the mesh member 15 differs depending on the type and environment of organic waste and bacteria to be processed, but here, the length of the diagonal line of one square (substantially square) mesh is predetermined. It is set to be a value (about 10 to 15 mm in this embodiment) (see FIG. 5). Note that the mesh member 15 is made of a highly rigid material such as metal because organic waste is pressed against it.

  A narrow portion 12d extending downward is provided at the lower end (discharge port 12c) of the taper portion 12b. The lower end of the narrow portion 12d is located above the left end portion of the first screw conveyor 16 extending in the left-right direction. Connected from. In this case, the crushing tank 12 and the first screw conveyor 16 communicate with each other (see FIG. 3).

  In the crushing tank 12, a columnar first roller 17 serving as a first crushing means extending in the left-right direction and a circle serving as a first crushing means having a smaller diameter than the first roller 17 are provided at the center in the vertical direction. A columnar second roller 18 is juxtaposed in the front-rear direction. The first roller 17 and the second roller 18 are respectively attached to the crushing tank 12 by a first shaft 17a and a second shaft 18a extending in the left-right direction. In this case, the first roller 17 is disposed on the front side, the second roller 18 is disposed on the rear side, and both the first and second rollers 17 and 18 have a substantially horizontal width in the crushing tank 12. It extends to the full (see FIG. 3). Therefore, the opening above the crushing tank 12 is covered with the first and second rollers 17 and 18 except for the gap between the two rollers, and is configured as a lid. For this reason, the organic waste once thrown into the crushing tank 12 does not jump out.

  The left end portions of both shafts 17a and 18a penetrate the left wall 12e of the crushing tank 12 and project outside the crushing tank 12, and their tips are connected to the first motor 19 and the second motor 20, respectively. ing. When the first motor 19 is driven, the first roller 17 is rotated counterclockwise as viewed from the left about the first shaft 17a via the first shaft 17a. The second roller 18 is rotated clockwise around the second shaft 18a as viewed from the left side via the shaft 18a. When the first roller 17 and the second roller 18 are rotated, the driving speeds of both the motors 19 and 20 are set so that their rotational speeds are the same (about 30 revolutions per minute).

  As shown in FIG. 4A, a plurality of first ridges 17b extending in parallel with the first shaft 17a in the circumferential direction are arranged in parallel on the circumferential surface of the first roller 17 so as to be equidistant from each other. ing. Further, as shown in FIG. 4B, a plurality of second ridges 18b extending in parallel with the second shaft 18a in the circumferential direction are arranged on the circumferential surface of the second roller 18 at equal intervals. It is installed. And as shown in FIG. 2, when the 1st protruding item | line 17b and the 2nd protruding item | line 18b oppose in the horizontal position, ie, the distance A when the 1st protruding item | line 17b and the 2nd protruding item | line 18b approached most. Is set to 10 mm or less. However, the distance A is greater than zero.

  When the first ridge 17b faces the inner surface of the front wall 12f of the crushing tank 12 in a horizontal position, that is, when the first ridge 17b and the inner surface of the front wall 12f are closest to each other, Almost no gap is formed on the surface. Further, when the second ridge 18b faces the inner surface of the rear wall 12g of the crushing tank 12 in a horizontal position, that is, when the second ridge 18b and the inner surface of the rear wall 12g are closest to each other, Almost no gap is formed on the surface. The heights of the first ridges 17b and the second ridges 18b are both set to about 9 mm.

  As shown in FIG.2 and FIG.3, in the crush tank 12, between the both rollers 17 and 18 and the mesh member 15, the rotary body 21 as a 2nd crushing means is carried out by the 3rd axis | shaft 21a extended in the left-right direction. It is pivotally attached to the crushing tank 12. The left end portion of the third shaft 21 a passes through the left wall 12 e of the crushing tank 12 and protrudes to the outside of the crushing tank 12, and the tip thereof is connected to the third motor 22. By driving the third motor 22, the rotating body 21 is rotated clockwise around the third shaft 21a as viewed from the left side via the third shaft 21a. In this case, the driving speed of the third motor 22 is set so that the rotating body 21 rotates 1700 to 1800 per minute.

  The rotating body 21 includes a pair of left and right rotating plates 23 having a disc shape, and both rotating plates 23 are disposed along the inner surface of the left wall 12e and the inner surface of the right wall 12h of the crushing tank 12, respectively. . Between the rotating plates 23, three disk-shaped auxiliary plates 24 having substantially the same diameter as the rotating plates 23 and thinner than the rotating plates 23 are rotatable left and right around the third shaft 21a. It is juxtaposed in the direction. In this case, the auxiliary plates 24 are arranged at a predetermined interval from each other so that the distance between the two rotating plates 23 is substantially divided into four equal parts.

  Between the rotating plates 23, four connecting rods 25 are installed in parallel with the third shaft 21a. The connecting rods 25 are connected to the outer sides in the radial direction of the two rotating plates 23, and are arranged at positions that are substantially 90 degrees apart from each other about the third shaft 21a. In this case, each connecting rod 25 penetrates each auxiliary plate 24. Each connecting rod 25 is provided with a plurality of (in this embodiment, 12) blades 26 each having a substantially long rectangular plate shape so as to be substantially equidistant from each other across the two rotating plates 23. That is, each of the connecting rods 25 is provided with three blades 26 between the rotating plate 23 and the auxiliary plate 24 and between the auxiliary plates 24. In this case, the thickness direction of each blade 26 is the left-right direction.

  The base end portion of each blade 26 penetrates through each of the connecting rods 25, and the tip end portion is located on the opposite side of the third shaft 21a with the base end portion interposed therebetween. Triangular protrusions 26a as viewed from the left side or the right side are provided on the rotation direction side surface of the rotating body 21 at the tip of each blade 26, respectively. That is, each protrusion 26 a is pointed toward the rotation direction of the rotating body 21. Accordingly, when rotating at a high speed of 1700 to 1800 revolutions per minute, the crushed organic waste and the massive fermented organic waste are vigorously shredded. That is, the blade 26 is cut, smashed or torn to make a finer state.

  As shown in FIG. 3, the first screw conveyor 16 includes a cylindrical case 27 and a screw 28 disposed inside the case 27. The screw 28 includes a shaft portion 28 a and the shaft portion. And a spiral blade 28b protruding from 28a. The left end portion of the shaft portion 28 a of the screw 28 protrudes to the outside of the case 27, and the tip end is connected to the fourth motor 29. The right end portion of the first screw conveyor 16 penetrates the left wall 13a of the fermenter 13 and reaches the inside of the fermenter 13. The screw 28 is rotated by driving the fourth motor 29, and the first screw conveyor 16 is rotated. A mixture of the organic waste and the fungus bed is conveyed into the fermenter 13 (in a first fermentation compartment 36 described later).

  As shown in FIGS. 1, 6, and 7, the fermenter 13 has a rectangular parallelepiped shape, and an upper wall thereof is a lid body 13 b that can be freely opened and closed. The fermenter 13 includes therein a fermentation chamber 30 in which organic waste is fermented and decomposed, and a heat exchange chamber 31 formed below the fermentation chamber 30. The fermentation chamber 30 and the heat exchange chamber 31 are separated from each other by a plate-like partition wall 32 made of a material having thermal conductivity such as metal, and the partition wall 32 has an arc shape whose cross-sectional shape expands toward the heat exchange chamber 31 side. (See FIG. 6). The heat exchange chamber 31 is filled with water 45 as a heat medium, and the water 45 and the partition walls 32 constitute heat exchange means.

  Between the inner surfaces of the left wall 13 a and the right wall 13 c of the fermenter 13 in the fermentation chamber 30, a stirring shaft 33 extending in the left-right direction is installed, and the stirring shaft 33 extends along the center of the fermentation chamber 30. It extends. The right end portion of the stirring shaft 33 penetrates the right wall 13 c of the fermenter 13 and protrudes to the outside of the fermenter 13, and the tip thereof is connected to the stirring motor 34. In the fermentation chamber 30, a pair of partition plates 35 that divide the fermentation chamber 30 into a plurality of chambers in the front-rear direction are extended upward from the partition wall 32 at a predetermined interval. That is, the fermentation chamber 30 is divided into three fermentation compartments that are approximately equal in size by both compartment plates 35, and each fermentation compartment is in order from the upstream side (left side), the first fermentation compartment 36, the second fermentation compartment. 37, the third fermentation compartment 38 (see FIG. 7).

  The stirring shaft 33 passes through both partition plates 35, and the both partition plates 35 are prevented from rotating with the rotation of the stirring shaft 33. Both partition plates 35 partition about 80% of the height from the partition wall 32 to the lid body 13b, and each fermentation compartment 36 is formed by a gap formed between the upper ends of both partition plates 35 and the lid body 13b. , 37, 38 are in communication with each other. In addition, a U-shaped notch recess 35 a is formed at the center of the upper ends of both partition plates 35.

  The stirring shafts 33 in the fermentation compartments 36, 37, and 38 are respectively provided with stirring blades 39 made of a pair of front and rear plate members that form a semicircular shape when viewed from the left side. The two stirring blades 39 connect the upper straight portion 39a extending substantially perpendicularly upward from the stirring shaft 33, the lower straight portion 39b extending substantially perpendicularly downward from the stirring shaft 33, and the tips of the upper straight portion 39a and the lower straight portion 39b. Each of them is composed of a semicircular arc-shaped curved portion 39c. Each upper straight portion 39a and each lower straight portion 39b are disposed on the stirring shaft 33 and separated in the left-right direction by approximately half of the distance in the left-right direction of each fermentation compartment 36, 37, 38. Each curved portion 39c is curved in a substantially S shape when viewed from the front side (see FIG. 7).

  Of the two stirring blades 39 in each fermentation compartment 36, 37, 38, the curved portion 39 c of one stirring blade 39 is located in front of the stirring shaft 33, and the curved portion of the other stirring blade 39. 39 c is located behind the stirring shaft 33. And by the drive of the stirring motor 34, each stirring blade 39 is rotated centering on the stirring shaft 33, and the organic waste and the fungus bed in each fermentation compartment 36,37,38 are stirred. In this case, the stirring motor 34 is intermittently driven at a speed at which each stirring blade 39 rotates at a speed of about 10 revolutions per minute for about 3 minutes every hour. A rectangular opening is formed in the center of the rear wall of the fermenter 13 in the third fermentation compartment 38, and a rectangular frame-shaped first connecting member 40 is provided so as to surround the opening. .

  As shown in FIG. 1, on the rear side of the crushing tank 12 and the fermenter 13, a second screw conveyor 41 as a conveying means extending in the left-right direction from the right wall 13 c of the fermenter 13 to the left wall 12 e of the crushing tank 12. Is arranged. Similar to the first screw conveyor 16, the second screw conveyor 41 includes a cylindrical case 42 and a screw (not shown) disposed inside the case 42. The left end portion of the shaft portion (not shown) of the screw protrudes to the outside of the case 42, and the tip thereof is connected to the fifth motor 43. A rectangular opening is formed in the front wall at the right end of the second screw conveyor 41, and the first connecting member 40 is connected so as to surround the opening. In other words, the inside of the second screw conveyor 41 and the inside of the third fermentation compartment 38 (fermentation chamber 30) communicate with each other via the first connecting member 40.

  A rectangular opening is formed in the rear wall 12g of the crushing tank 12 below both the rollers 17 and 18 and above the tapered portion 12b, and a rectangular cylindrical second connecting member is formed so as to surround the opening. 44 is provided (see FIG. 2). In this case, the second connecting member 44 is provided at a position substantially corresponding to the rotating body 21. A rectangular opening is formed in the front wall at the left end of the second screw conveyor 41, and a second connecting member 44 is connected so as to surround the opening. That is, the inside of the second screw conveyor 41 and the inside of the crushing tank 12 are communicated with each other via the second connecting member 44. And the screw of the 2nd screw conveyor 41 is rotated by the drive of the 5th motor 43, and the mixture of the organic waste and fungus bed in the 3rd fermentation compartment 38 passes through the inside of the 2nd screw conveyor 41, and is a crushing tank. 12 is conveyed downstream of both rollers 17 and 18 in the interior.

  The first motor 19, the second motor 20, the third motor 22, the fourth motor 29, and the fifth motor 43 are driven when the lid body 14 of the crushing tank 12 is opened, and are stopped after a predetermined time has elapsed. It has become. In this case, once the motors 19, 20, 22, 29, and 43 are driven, even if the lid 14 is closed, the motors 19, 20, 22, 29, and 43 are not stopped unless a predetermined time elapses.

Next, the fungus bed in the present embodiment will be described.
In general, an extinct waste disposal apparatus uses a fungus bed together with garbage. Here, the fungus bed is a decomposition base material that facilitates the action of microorganisms, and generally, for example, sawdust is easily attached to the microorganisms and easily mixed with air. Organic waste composed of carbon, oxygen, hydrogen, and nitrogen is decomposed into low molecular weight materials such as carbon dioxide, water, and ammonia inside this fungus bed. It is.

  In the present embodiment, it is preferable to suitably use a bio-base material for organic waste treatment devices generally sold at home centers and supermarkets as a fungus bed, specifically, an earth slab made by, for example, Earth Lab Japan. it can. Although there are methods that use soil microorganisms as an extinct organic waste treatment method, treatment with this method is possible, but treated water or residue is generated by decomposition. On the other hand, a biological decomposition method using enzymes and metabolites produced by intestinal microorganisms of animals can be decomposed almost completely in a body temperature environment without applying energy such as heating. Therefore, the fungus bed is preferably a biodegradable fungus bed.

  The earth slab, which is a fungus bed based on this biodegradation method, will be described below. The enzyme metabolite is mixed with sawdust as a decomposition base material. In this enzyme metabolite, enzymes that produce a specific process such as Pseudomonas aeruginosa, Pseudomonas Stutzeri, Sertia liufacient, Sertia marcescens, Stenotrophonas maltophilia, and Bacillus sphaeric are produced. Has not been analyzed. In addition, the amino acid composition of the enzyme metabolite described above has a total amino acid content of 1720 μg / ml, phosphoserine 15.85 μg / ml, phosphoethanolamine 4.82 μg / ml, urea 136.75 μg / ml, cystine 11.88 μg / ml. Ammonia 1449.95 μg / ml, carnitine 1.99 μg / ml (Hitachi L-8500: analyzed on an ecological analysis column on December 29, 1998; Osaka Prefecture University).

Next, operation | movement of the organic waste processing apparatus 11 comprised as mentioned above is demonstrated.
Now, when processing organic waste for the first time, first, the lid 14 of the crushing tank 12 is opened, and organic waste such as garbage from the input port 12a is almost the same amount as this organic waste. Add the fungus bed. In addition, once organic waste is processed, the residue after the processing can be used again as a fungus bed. In the first case, either the organic waste or the fungus bed may be put in first, and the organic waste is put in as it is or in a small biodegradable bag with a capacity of about several liters. The The charged organic waste and fungus bed are crushed while being crushed by the first and second rollers 17 and 18 and fall toward the rotating body 21. At this time, the first and second rollers 17 and 18 rotate at the same speed, but since the first roller 17 has a larger diameter than the second roller 18, the peripheral speed on these peripheral surfaces is The first roller 17 is faster than the second roller 18. In addition to this, since the first ridges 17b and the second ridges 18b bite into the bag containing organic waste, in addition to the crushing force against the bag by the first and second rollers 17,18. A force to shred up and down acts and the bag is torn.

  The organic waste and the fungus bed crushed by the first and second rollers 17 and 18 are mixed while being shredded by the blades 26 of the rotating body 21. At this time, the mixture of the organic waste and the fungus bed violently scatters, but the first and second rollers 17 and 18 serve as a shield, and the scatter of the mixture to the outside from the inlet 12a is suppressed. Then, the mixture split by the blades 26 of the rotating body 21 is crushed by the mesh member 15. In this case, a lump of the mixture smaller than the mesh of the mesh member 15 falls into the first screw conveyor 16 and is conveyed by the first screw conveyor 16 into the first fermentation compartment 36 of the fermenter 13. In addition, the lump of the mixture larger than the mesh of the mesh member 15 is dammed by the mesh member 15 and is split again by the blades 26 of the rotating body 21.

  When the inside of the first fermentation compartment 36 is filled with the mixture conveyed into the first fermentation compartment 36, the mixture passes over one (left side) partition plate 35 and overflows into the second fermentation compartment 37, and When the inside of the second fermentation compartment 37 is filled with the mixture, the mixture passes over the other (right) partition plate 35 and overflows into the third fermentation compartment 38. And the organic waste is decomposed by fermentation in the process of flowing from the first fermentation compartment 36 to the third fermentation compartment 38 in this way.

  Here, since the activity of microorganisms generally changes depending on the temperature, it is important to maintain the organic waste uniformly at the temperature at which the microorganisms are activated in order to promote the decomposition of the organic waste. It is an element. For this reason, a garbage processing apparatus (organic waste processing apparatus) in which a heater is provided in a processing tank (fermentation tank) for processing organic waste has been proposed (for example, JP 2004-113912 A). Publication).

  By the way, in the garbage processing apparatus described in this Unexamined-Japanese-Patent No. 2004-113912, since the temperature in a processing tank (organic waste) is adjusted with a heater, the electric power for making a heater generate heat ( Energy resources) is required, leading to waste of energy resources and increased running costs. In addition, the temperature adjustment by the heater is likely to cause temperature unevenness, and it is difficult to make the temperature in the treatment tank (organic waste) uniform. Therefore, making the temperature of the organic waste uniform without using energy resources is extremely important in efficiently treating (fermenting and decomposing) the organic waste with respect to the global environment. Therefore, in this embodiment, the organic waste is subjected to fermentation decomposition while the temperature in the fermenter 13 is made uniform.

Hereinafter, the process of fermenting and decomposing organic waste in the fermenter 13 will be described.
Fermentation of the organic waste of the mixture conveyed into the first fermentation compartment 36 is first started from the decomposition of sugars, amino acids and the like by the filamentous fungus as a first stage. Filamentous fungi are fungi that exist everywhere in nature and have a fast growth rate, but they generate respiratory fever, and their ability to degrade decreases above 40 ° C. For this reason, it is desirable to maintain the temperature at about 40 ° C. during decomposition by filamentous fungi.

  Thus, in the next stage where the temperature has risen, thermophilic bacteria centering on actinomycetes grow. Thermophilic bacteria such as actinomycetes are resistant to high temperatures and degrade cellulose and semicellulose that could not be decomposed by filamentous fungi. At this time, it becomes 60 degreeC or more only with respiratory heat. In the present embodiment, the generation of respiratory heat is promoted by rotating the stirring blade 39 to actively mix air, and further, frictional heat and wave heat are generated. Thus, the organic waste is brought into a very high temperature (for example, 80 ° C.) by the heat of decomposition generated when the organic waste is fermented and decomposed. The heat of decomposition is exchanged with other parts (here, water 45 in the heat exchange chamber 31) through the partition wall 32, and the water 45 is warmed. As a result, the temperature of the organic waste in the first fermentation compartment 36 is suppressed to about 65 ° C., for example.

  When fermentation decomposition by high-temperature bacteria centering on actinomycetes progresses and the substances to be decomposed in the organic waste decrease, the growth of high-temperature bacteria such as actinomycetes decreases, so the temperature of the organic waste decreases. Then, as a second step, fiber tissues such as cellulose and semicellulose that have been softened by being decomposed by thermophilic bacteria are further decomposed by bacteria. Moreover, the organic matter is decomposed into water, carbon dioxide, and nitrogen by being subjected to the mutual fermentation of oxidation and reduction by the amphoteric digestive bacterium, and is made inorganic.

  As described above, the organic waste is fermented and decomposed while flowing from the first fermentation compartment 36 to the third fermentation compartment 38. Therefore, the temperature becomes lower toward the downstream side (third fermentation compartment 38) of the fermentation chamber 30. . When the temperature is lowered, the activity of the microorganisms is also reduced, so that the decomposition ability is reduced. However, the heat of decomposition on the upstream side (first fermentation compartment 36) of the relatively high temperature fermentation chamber 30 is the water in the heat exchange chamber 31. It is conducted (moved) to the downstream side (second and third fermentation compartments 37, 38) having a relatively low temperature through 45, and the downstream side is warmed. For this reason, the temperature of the fermentation chamber 30 becomes uniform, the decrease in the activity of each bacterium (microorganism) is suppressed, that is, each bacterium is uniformly activated, and the organic waste is efficiently decomposed. Further, even if the decomposition of the organic waste further proceeds and the temperature of the fermentation chamber 30 starts to decrease, heat exchange is performed with the warmed water 45 in the heat exchange chamber 31, so that the temperature decrease of the organic waste is suppressed. Is done.

  The organic waste that has been decomposed and made finer in the fermentation chamber 30 is conveyed again from the third fermentation compartment 38 to the downstream side of the rollers 17 and 18 in the crushing tank 12 by the second screw conveyor 41, and the Each blade 26 is further shredded. This further shredded organic waste is conveyed again to the fermentation chamber 30 via the first screw conveyor 16 and is fermented and decomposed. As described above, the organic waste is efficiently decomposed by repeatedly performing the crushing in the crushing tank 12 and the fermentation decomposition in the fermentation chamber 30, and thus the extinction time is shortened. In addition, about each microbe (microorganism | organism | solid) which works in the fermentation chamber 30, all are maintained by the dormant state, and it proliferates again in each fermentation stage, and performs predetermined fermentation decomposition | disassembly. For this reason, the fungus bed can basically be reused, and it is not necessary to exchange the fungus bed for an extremely long time.

  Here, the increase in the temperature of the organic waste in the 1st fermentation compartment 36, the 2nd fermentation compartment 37, and the 3rd fermentation compartment 38 in the fermentation chamber 30 of this embodiment is shown in Table 1. The unit is (° C.).

The absolute temperature of the organic waste in the first fermentation compartment 36, the second fermentation compartment 37, and the third fermentation compartment 38 in the fermentation chamber 30 of this embodiment is the type, input amount, and input amount of organic waste. Table 1 shows an example, although it depends on the time and the outside temperature. When water 45 as a heat medium is not injected into the heat exchange chamber 31 at an outside air temperature of 16 degrees, the temperature of the organic waste in each fermentation compartment 36, 37, 38 is 80 ° C. in the first fermentation compartment 36, The temperature was 45 ° C. in the second fermentation compartment 37 and 19 ° C. in the third fermentation compartment 38. Although the results under other conditions are omitted, the temperature of the organic waste is qualitatively the highest in the first fermentation compartment 36 on the most upstream side, and then the second fermentation compartment 37 It can be seen that the third fermentation compartment 38 is high and has the lowest tendency. This confirms the process of fermentative decomposition as previously estimated.

  Next, Table 1 also shows the temperature when water 45 as a heat medium is injected into the heat exchange chamber 31. The outside air temperature is 17 ° C., which is substantially the same as when water 45 is not injected. In this case, in the 1st fermentation compartment 36, it falls by 15 degreeC and becomes 65 degreeC. Conversely, in the second fermentation compartment 37, the temperature rises by 9 ° C. to 54 ° C. Furthermore, in the 3rd fermentation compartment 38, it rose 16 degreeC and has become 35 degreeC. As described above, the fungus bed of the present embodiment is a group of bacteria activated near the body temperature, so that the fermentation in the second fermentation compartment 37 and the third fermentation compartment 38 is performed in the heat exchange chamber 31. It is easily estimated that fermentation proceeds in the state where water 45 is added.

  Now, it is presumed that the temperature difference in each of the fermentation compartments 36, 37, and 38 is generated in this manner because the bacterial groups involved in the fermentation are different. Therefore, the following experiment was conducted.

Table 2 shows the first fermentation compartment 36, the third fermentation compartment 38, and the normal temperature (16 ° C. here) before the introduction, which was carried out in order to examine what kind of change the fungus group in the fungus bed has at different temperatures. It is a table | surface which shows the number of colony formation units per unit in. The unit is cfu / g (colony forming unit per 1 g of sample). In general, colonies that are diluted with a solvent and cultured in an agar medium are considered to be formed from one fungus at first. Therefore, the number of colony forming units per unit determined from this number of colonies is equal to the number of fungi in the sample. it can. Therefore, here, the number of colony forming units is estimated as the number of bacteria. First, the second group of bacteria is the number of colony forming units per 1 g of the sample, that is, the number of bacteria obtained from the number of colonies that appeared when the sample was cultured in an agar medium at a constant temperature of 55 ° C. for a predetermined time. The first fungal group is the number of colony forming units per 1 g of the sample obtained by subtracting the number of colonies of the second fungal group from the number of colonies that appeared when the sample was cultured on an agar medium at a constant temperature of 35 ° C. for the same time. The number of bacteria.

First, as a result of culturing the samples collected in the first fermentation compartment 36 where the temperature is increased to 80 ° C. at 35 ° C. and 55 ° C., respectively, the number of bacteria per gram of the first fungus group is 1.1 × 10 ^7. Thus, the number of bacteria per gram of the second group of bacteria was 3.6 × 10 ^{8, which} was approximately 30 times superior.

On the other hand, as a result of culturing the samples collected in the third fermentation compartment 38 where the temperature dropped to 30 ° C. at 35 ° C. and 55 ° C., respectively, the number of bacteria per gram of the first fungal group increased and increased to 7.8 × 10 ^9. However, the number of bacteria per gram in the second group of bacteria decreased to 6.6 × 10 ^6, which was almost inferior to 1/1000. From this, it can be seen that the second fungal group has higher activity at high temperatures than the first bacterial group. In addition, the number of bacteria per gram of the first fungus group is 3.6 × 10 ⁸ in the fungus bed at room temperature, whereas the number of bacteria per gram of the second fungus group is 4.4 × 10 ⁶ . It has become. In this case, it is further understood that the first fungus group is superior to the second fungus group. From this, it can be seen that the second fungal group has higher activity at high temperatures than the first bacterial group. Hereinafter, in this embodiment, for convenience, the second fungus group will be referred to as “thermophilic bacteria” and the fungus group belonging to the first fungus group will be referred to as “general bacteria”.

  In the observation with a microscope, either the first fungus group (general fungus) or the second fungus group (thermophilic fungus) is mainly composed of short koji mold or long koji mold, but collected from the first fermentation compartment 36. In the sample, yeast and fungi were also observed.

In the Gram staining method, the bacteria belonging to the first group of bacteria (general bacteria) were mainly gram-positive bacteria, whereas the second group of bacteria (thermophilic bacteria) were mainly gram-negative bacteria. It was.
From the above, in the process of decomposition of fermentation according to the present embodiment, the temperature of fermentation and the fungal group involved in the fermentation depend on the stage of fermentation in each of the first fermentation compartment 36, the second fermentation compartment, and the third fermentation compartment. It can be seen that the configuration changes.

  Now, in this embodiment, since the heat exchange chamber 31 is provided and the second fermentation compartment 37 and the third fermentation compartment 38 are supplied with heat, it is considered that the temperature approaches a temperature suitable for fermentation. In this case, an experiment was conducted to determine whether the composition of the fungal group in the first fermentation compartment 36 where the temperature was reduced from 80 ° C. to 65 ° C. due to the influence of the heat exchange chamber 31 was changed.

  FIG. 8 is a photograph showing a PCR electrophoresis pattern for analyzing a bacterial group of degradation products. The pattern shown to A shows the electrophoresis pattern of the microbial bed in normal temperature (16 degreeC) before injection | throwing-in. The pattern shown to B shows the electrophoresis pattern of the organic waste in the 1st fermentation compartment 36 which rose to 80 degreeC without putting water in the heat exchange chamber 31. FIG. The pattern shown to C shows the electrophoresis pattern of the organic waste in the 1st fermentation compartment 36 which fell to 65 degreeC when water was put into the heat exchange chamber 31. FIG. The pattern shown in D shows the electrophoresis pattern of organic waste in the third fermentation compartment 38 whose temperature has dropped to 35 ° C.

  In the experiment, the nucleic acid of the bacterial group was extracted from the organic waste sample at each stage, the 16S rDNA fragment was amplified by the PCR method, and the electrophoresis patterns were compared, thereby comparing the bacterial group contained in each sample. Went.

  As a result, the pattern B is significantly different from the pattern A. As shown in Table 2, the fungus group contained in the organic waste in the first fermentation compartment 36 that was raised to 80 ° C. without entering water in the heat exchange chamber 31 shown in Pattern B was the second fungus. The group (thermophilic bacteria) is dominant. On the other hand, as shown in Table 2, the first fungus group (general fungus) is dominant in the fungus group contained in the fungus bed before input shown in pattern A. Also in this experiment, it agrees with the results shown in Table 2, and it can be seen that the fungus bed introduced into the first fermentation compartment 36 has changed to a new fungal population.

  Subsequently, when pattern B and pattern C are compared, it can be seen that almost the same pattern is shown. This shows that even if the temperature of the organic waste in the first fermentation compartment 36 is lowered from 80 ° C. to 65 ° C. by the heat exchange chamber 31, the bacteria constituting the fungus group do not change. Therefore, the cooling of the first fermentation compartment 36 by the heat exchange chamber 31 does not hinder the fermentation in the first fermentation compartment 36. That is, by supplying the residual heat generated in the first fermentation compartment 36 to the second fermentation compartment 37 and the third fermentation compartment 38, the efficiency of fermentation in the first fermentation compartment 36 does not change, and the second fermentation compartment 37 and As the efficiency of fermentation in the third fermentation compartment 38 increases, the efficiency of fermentation as a whole increases.

  Next, when the pattern A and the pattern D are compared, it can be seen that the patterns are substantially the same. From this, the composition of the fungus group once changed in the pattern B or pattern C is the fungus bed first introduced in the final stage of decomposing the organic waste whose temperature has been lowered and the generation of fermentation heat is gradually reduced. It turns out that it has returned to the same fungal group. From this, it can be seen that the final product after the decomposition of the organic waste can be used again as a fungus bed. Therefore, the final product recirculated from the third fermentation compartment 38 to the crushing tank 12 serves as a fungus bed for decomposing the newly supplied organic waste.

According to the embodiment detailed above, the following effects are exhibited.
(1) Since the crushing and fermentation decomposition of the organic waste are repeatedly performed, the processing efficiency of the organic waste can be improved.

  (2) Even if organic waste is put into the crushing tank 12 in a state where it is put in a biodegradable bag, after the bag is shredded by both rollers 17 and 18, each blade of the rotating body 21 By 26, a bag and organic waste can be shredded. For this reason, the organic waste can be suitably crushed together with the bag.

(3) Since the organic waste is crushed between the rollers 17 and 18, the organic waste can be promptly guided to the rotating body 21 while being crushed.
(4) Organic waste can be pulled up and down by the rollers 17 and 18 having different peripheral speeds on the peripheral surface, and a sheet made of biodegradable plastic or a garbage bag containing organic waste Can be suitably shredded.

  (5) A plurality of first ridges 17b and second ridges 18b are juxtaposed on the circumferential surfaces of the rollers 17 and 18 in a direction parallel to the rotation axis of the rollers 17 and 18, respectively. For this reason, at the time of crushing organic waste, each protruding item | line 17b and 18b bites into the biodegradable bag which put organic waste. For this reason, since both rollers 17 and 18 become difficult to slide with respect to a bag, the force which draws a garbage bag between both rollers 17 and 18 and pulls it up and down can be made to act efficiently. Therefore, the organic waste can be suitably shredded together with the bag.

  (6) Since the blade 26 rotates at a high speed (1700 to 1800 rpm) together with the rotating body 21, the organic waste can be preferably shredded, and the organic waste and the fungus bed are preferably used. Can be mixed.

  (7) Since the size of the organic waste conveyed to the fermenter 13 can be limited by the mesh member 15, the decomposition efficiency of the organic waste in the fermenter 13 can be improved.

  (8) By returning the organic waste decomposed in the fermenter 13 into the crushing tank 12 on the downstream side of the rollers 17 and 18, the organic waste in the fermenter 13 is not sufficiently decomposed. However, the organic waste can be shredded again. Moreover, the organic waste fully decomposed | disassembled in the fermenter 13 can be used again as a fungus bed. Since it is sufficiently mixed with the new organic waste introduced at this time, the efficiency of subsequent fermentation can be increased.

  (9) Since the conveying means is constituted by the second screw conveyor 41, it is possible to easily measure a certain amount of organic waste to the crushing tank 12 only by managing the operation time of the second screw conveyor 41. Can be transported. Moreover, since it can be set as the structure closed compared with the belt conveyor of an open structure, the leakage of the odor with respect to the exterior, contamination, etc. can be suppressed.

(10) Since each agitating blade 39 has a spiral shape as a whole, it can not only stir the organic waste by rotating but also send the organic waste to the downstream side.
(11) Since the protrusions 26a are provided at the tips of the blades 26, the organic waste can be suitably torn while being scraped.

(12) Since the organic waste and the fungus bed can be mixed in the crushing tank 12, it is not necessary to provide a separate mixing tank, and the organic waste treatment apparatus 11 can be made compact.
(13) When the organic waste and the fungus bed are mixed while being shredded by the blades 26 of the rotating body 21, these mixtures are violently scattered in the crushing tank 12. However, there is almost no gap between the rollers 17 and 18 and the inner surface of the crushing tank 12, and the gap between the rollers 17 and 18 is as small as 10 mm or less. It is possible to suppress the mixture from splashing from the mouth 12a to the outside.

  (14) The water 45 in the heat exchange chamber 31 can conduct (move) the heat of decomposition from the upstream side of the relatively high temperature fermentation chamber 30 to the downstream side of the relatively low temperature. For this reason, the temperature of the organic waste in the fermentation chamber 30 can be made uniform without using energy resources such as electric power, and each bacterium (microorganism) can be uniformly activated. Therefore, organic waste can be decomposed efficiently.

  (15) When the temperature of the organic waste becomes higher than the water 45 in the heat exchange chamber 31 due to the heat of decomposition, the heat of the organic waste can be transferred to the water 45, and the organic waste When the decomposition of the waste proceeds and the temperature of the organic waste becomes lower than that of the water 45, the heat of the water 45 can be transferred to the organic waste. For this reason, the temperature fall of organic waste can be suppressed and the fall of the activity of each microbe can also be suppressed. Therefore, it is possible to suppress a decrease in the decomposition efficiency of organic waste.

  (16) Since the fermentation chamber 30 and the heat exchange chamber 31 are isolated by the partition wall 32 having thermal conductivity, these organic waste and water are not brought into direct contact with the organic waste and the water 45. Heat exchange with 45 can be performed efficiently and smoothly.

  (17) Since heat can be transferred between the fermentation compartments 36, 37, and 38 from the fermentation compartment having a high temperature to the fermentation compartment having a low temperature through the water 45, the fermentation compartments 36, 37, and 38 It is possible to activate each of the fungi that works in, and to decompose organic waste efficiently.

(18) Since the partition wall 32 has an arc shape that swells toward the heat exchange chamber 31, the heat exchange between the organic waste and the water 45 can be performed efficiently and uniformly.
(Example of change)
In addition, the said embodiment can also be changed and actualized as follows.

  -Distance A when the 1st protruding item | line 17b and the 2nd protruding item | line 18b approached most is set to 10 mm or less supposing that it throws in without putting an organic waste in a bag. However, for example, in the case of a 45-liter garbage bag made of biodegradable plastic, if it is about 50 mm, the entire garbage bag can be introduced. At this time, the garbage bag is torn between the first and second rollers 17 and 18 at the time of charging, and the contents are exposed. Further, in order to smooth the biting at this time and torn well due to the speed difference between the first and second rollers 17 and 18, the first ridges 17b of the first and second rollers 17 and 18 of the above embodiment You may change the shape of the 2nd protruding item | line 18b, and may provide the pin on the spike with the pointed tip etc. so that a garbage bag may be caught reliably.

-You may comprise both rollers 17 and 18 so that it may rotate at the same speed with one motor via a pulley and a belt.
-You may make the diameter of both the rollers 17 and 18 the same. In this case, it is desirable that the rotational speeds of the rollers 17 and 18 are different from each other.

The mesh member 15 may be changed to a slit shape or may be omitted.
Here, the blade 26 is not limited to having a sharp cutting edge that can be cut, but also having a sharp tip, or a hammer-like one that is struck by organic waste and tears the organic waste. Good.

-You may abbreviate | omit at least one among each protruding item | line 17b, 18b.
-At least one of the screw conveyors 16 and 41 may be changed to a belt conveyor, an air pump, or the like.

-You may comprise so that the organic waste of the 3rd fermentation compartment 38 may be conveyed upstream from both the rollers 17 and 18 in the crushing tank 12 by the 2nd screw conveyor 41. FIG.
-Oil or alcohol may be used as the heat medium instead of the water 45.

-You may provide the heater (for example, throwing heater etc.) for heating the water 45 in the heat exchange chamber 31 auxiliary.
-It is also possible to provide an agitating blade (not shown) for agitating the water 45 in each heat exchange chamber 31 and rotate the agitating blade by a motor or the like to actively agitate the water 45. Good.

  As shown in FIG. 9, two partition plates 50 are provided in the heat exchange chamber 31, and the first heat exchange is performed so that the heat exchange chamber 31 corresponds to the fermentation compartments 36, 37, and 38, respectively. A compartment 51, a second heat exchange compartment 52, and a third heat exchange compartment 53 may be divided into three chambers. If it does in this way, the temperature management of each fermentation compartment 36,37,38 can be performed easily, respectively.

  In addition, it is possible to control the movement of the water 45 between the heat exchange compartments 51, 52, 53 by providing communication holes in the both partition plates 50 or making both the partition plates 50 doors that can be opened and closed. May be.

  Further, a rotatable stirring blade (not shown) is provided in each of the heat exchange compartments 51, 52, 53, and the stirring blade is rotated by a motor or the like so that the water 45 is actively stirred. May be.

In addition, each of the heat exchange compartments 51, 52, 53 may be provided with a heater (for example, a throwing heater or the like) for supplementarily heating the water 45 therein.
-At least one of the partition plates 35 may be omitted to make the fermentation chamber 30 one chamber, or may be partitioned into two fermentation compartments. Alternatively, the number of partition plates 35 may be increased to three or more, and the fermentation chamber 30 may be partitioned into four or more fermentation compartments.

  -Between the plurality of heat exchange compartments 51, 52, 53 configured in this manner, a communication means such as a valve that can be communicated and closed is arranged, and the water temperature in the first heat exchange compartment 51 is equal to or lower than the set temperature. In this case, a thermostat as a control means works to prevent the exchange of the water 45 between the heat exchange compartments 51, 52, 53. On the other hand, when the water temperature in the first heat exchange compartment 51 exceeds the set temperature, the thermostat works in reverse and allows the water 45 to be exchanged between the heat exchange compartments 51, 52, 53.

  Alternatively, a water temperature meter as a sensor is arranged in each heat exchange compartment 51, 52, 53, and a motor-driven pump that is a heat medium circulation means is arranged between the heat exchange compartments 51, 52, 53 as a control means. The exchange of water 45 may be actively promoted by these computers.

  By comprising in this way, when the 1st fermentation compartment 36 is not fully warmed with fermentation heat, distribution | circulation of the water 45 which is a heat medium between each heat exchange compartment 51,52,53 is blocked | prevented and heat exchange is carried out. And the temperature increase of the first fermentation compartment 36 is promoted.

  On the other hand, when the first fermentation compartment 36 is sufficiently warmed by the heat of fermentation, the excess heat is used to heat the second fermentation compartment 37 and the third fermentation compartment 38, so that each heat exchange compartment 51, 52, 53 is used. By promoting the circulation of the water 45, which is the heat medium, and promoting the heat exchange, it is possible to efficiently use the decomposition heat.

  As shown in FIG. 10, a heat exchange chamber 54 is provided in the crushing tank 12 so as to surround the inside of the crushing tank 12, and a communication pipe that further connects the heat exchange chamber 54 and the heat exchange chamber 31 of the fermentation tank 13. 55 may be provided. At this time, the water 45 is filled in the heat exchange chamber 54, the communication pipe 55, and the heat exchange chamber 31. If it does in this way, the heat of fermentation which generate | occur | produced in the fermentation chamber 30 can be transmitted to the crushing tank 12 with the water 45, and the inside of this crushing tank 12 can be warmed. As a result, fermentation of organic waste is favorably promoted in the crushing tank 12 so that the organic waste stuck to the wall surface in the crushing tank 12 can be easily removed, and the malodor of the organic waste can be suppressed. Become.

  Furthermore, even if the temperature in the crushing tank 12 becomes high (80 ° C. or higher) due to the decomposition heat generated by fermentative decomposition of the organic waste in the crushing tank 12, the heat of decomposition is generated in the heat exchange chamber 54. Therefore, the temperature in the crushing tank 12 can be suppressed to a temperature suitable for fermentation decomposition of organic waste (about 65 ° C.). For this reason, also in the crushing tank 12, it becomes possible to accelerate | stimulate the fermentative decomposition | disassembly of organic waste.

Then appended to the following about the technical idea that can be understood from the above-described embodiment.
(Supplementary Note 1) before Symbol second crushing means, organic waste, characterized in that rotates at high speed as compared with the first crushing means processing apparatus.

According to the structure of the above supplementary note 1, by rotating at a high speed (for example, 1700 to 1800 revolutions / minute), the organic waste can be crushed by an action different from that of the first crushing means.
(Supplementary Note 2) before Symbol first crushing means organic waste processing apparatus, wherein the arranged to the lid-like cover the opening of the crushing tank.

  According to the structure of the above supplementary note 2, when the organic waste is shredded in the second crushing means, the first crushing means functions as a lid, so the organic when being shredded by the second crushing means The waste of toxic waste is not scattered.

The perspective view which shows the organic waste processing apparatus of embodiment. The side view which shows the inside of the crushing tank of embodiment. The front view which shows the inside of the crushing tank of embodiment. (A) is a perspective view of a 1st roller, (b) is a perspective view of a 2nd roller. The top view of the mesh member of embodiment. Sectional drawing in the front-back direction of the fermenter of embodiment. Sectional drawing in the left-right direction of the fermenter of embodiment. The photograph which shows the PCR electrophoresis pattern of the fungal group of a degradation product. Sectional drawing in the left-right direction of the fermenter of the example of a change. The cross-sectional simplified view which shows the organic waste processing apparatus of the example of a change notionally.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Organic waste processing apparatus, 12 ... Crush tank, 12c ... Discharge port, 13 ... Fermenter, 15 ... Mesh member, 17 ... 1st roller as 1st crushing means, 17b ... 1st protruding item | line as protrusion , 18 ... second roller as first crushing means, 18b ... second protrusion as projection, 21 ... rotating body as second crushing means, 26 ... blade, 30 ... fermentation chamber, 31 ... heat exchange chamber, 32 ... partition walls constituting heat exchange means, 36 ... first fermentation compartment, 37 ... second fermentation compartment, 38 ... third fermentation compartment, 41 ... second screw conveyor as conveying means, 45 ... heat constituting heat exchange means Water as a medium.

Claims (3)

The charged organic waste is crushed, a mixture of the crushing tank in which the organic waste and the fungus bed are mixed, and the mixture of the organic waste and the fungus bed crushed in the crushing tank is transferred. A fermenter to be decomposed, a conveying means for returning the organic waste decomposed in the fermenter to the crushing tank, and a heat of decomposition generated when the organic waste is decomposed in the fermenter Heat exchange means for conducting from one part to another,
The heat exchange means has a heat medium in which the decomposition heat is heat exchanged, and is configured such that heat exchange is performed between the heat medium and the organic waste,
The fermenter includes a plurality of fermentation compartments in which the organic waste is decomposed and a heat exchange chamber filled with the heat medium, and the fermentation compartment and the heat exchange chamber are thermally conductive. Isolated by a septum having
Each fermentation compartment is arranged so that the mixture is transferred in order from the crushing tank side ,
The heat exchange chamber is formed from the crushing tank side to the downstream side in the transfer direction of the mixture along the fermentation compartments, and the heat medium is downstream from the crushing tank side in the heat exchange chamber. by flowing into the organic waste treatment apparatus, characterized in that the decomposition heat generated in most fermentation compartment crushing chamber side through the heat medium is transferred to the other fermentation compartment. The heat exchange means allows a plurality of heat exchange compartments partitioned by partition walls corresponding to the plurality of fermentation compartments , and allows a heat medium filled in the plurality of heat exchange compartments to flow with other heat exchange compartments or The organic waste treatment apparatus according to claim 1 , further comprising a prohibiting control unit. The organic waste treatment apparatus according to claim 2 , further comprising a heat medium circulation unit that promotes the circulation of the heat medium filled in the plurality of heat exchange compartments.