JP2009106860A - High-speed fermentation treatment system for rotting waste - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ferment rotting waste efficiently within a short time as a whole by converting the rotting waste into coarse wet particulate intermediate treated product by the primary fermentation means to facilitate its fermentation in a fermentation tank and performing fermentation suitable for the degree of progress of fermentation by controlling the moisture content of the intermediate treated product in the fermentation tank. <P>SOLUTION: In the primary fermentation means I for treating rotting waste G into an intermediate treated product M, an inorganic filler having such a particle diameter as not to permit the filler to enter injection holes is packed into the vacant space around the air supply pipe disposed within a pit in a specified manner. In the final fermentation treatment means II for fermenting the intermediate treated product M, the fermentation tank is covered with a cover to form a steam diffusion preventing space between the cover and the surface of the intermediate treated product M. Waste gas ducts communicating with the diffusion preventing space are contiguously formed on both sides of the main body of the fermentation tank and are used to suck steam. The chains attached to both sides of the cover are engaged with the sprocket of a turning-back device, and the turning-back device is operated in a state hidden inside the cover. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a processing system for reliably fermenting septic waste in a short time.

  In order to ferment septic waste in a fermenter in a short time, it is necessary to supply a sufficient amount of air to the septic waste and adjust the amount of water to an appropriate amount to efficiently grow aerobic microorganisms. There is. Regarding the air supplied into the tank, generally, as shown in FIG. 8, the to-be-processed B is accommodated in the fermentation tank A installed in the fermentation building, for example, a conveyor type turning device C with a fried member is provided. It is made to reciprocate in the longitudinal direction from the input end D to the discharge end E of the fermenter A, and the contact between the object to be processed and air is performed while turning over. The to-be-processed object B in a fermenter becomes a processed product of a fermentation early stage, a fermentation middle stage, and a fermentation late stage with a movement, and is finally taken out as a fermentation product.

  However, the wastes thrown into the fermentation tank vary greatly in physical properties and other properties such as components, moisture content and viscosity depending on the type. Moreover, even if it is the same kind of septic waste, the properties differ depending on the season and collection location. For example, in the case of sewage waste with high viscosity, such as sewage sludge and special food residues, it is not easy even if it is attempted to scoop up the initial stage where fermentation is not progressing with the scooping member of the conveyor type turning means In some cases, a large load is applied to the scraping member and it is damaged. Therefore, in order to sufficiently bring the septic waste in the fermentation tank into contact with air by turning over, it is desirable to adjust the septic waste to a property suitable for fermentation in advance before introducing the septic waste into the fermentation tank.

  In Patent Document 1, before being put into a fermentation tank, pretreatment of mixing plant sludge and sludge incineration ash or agglomerated material into septic waste as necessary is performed to temporarily store septic waste. A technique for making shape-adjusted waste is disclosed.

  On the other hand, the moisture adjustment of the object to be treated in the fermentation tank has to rely exclusively on the evaporation of water vapor due to the heat of fermentation. Since the upper opening of the fermenter is open, water vapor generated with the fermentation is naturally diffused into the fermentation building. In fact, since the amount of transpiration of water vapor is greatly affected by the atmospheric environment in the fermentation building, it is not easy to adjust the water content of the object to be treated in each fermentation process.

  For example, since the surface of the object to be processed in the fermentation tank is always in contact with the normal temperature atmosphere, when the temperature is low as in winter, a part of the water vapor is condensed on the surface of the object to be processed. In a wet state different from the inside. As a result, the diffusion of water vapor is hindered, which causes the fermentation to be delayed due to a decrease in the product temperature and the amount of water vapor transpiration. In addition, the water vapor diffused from the object to be treated in the fermentation tank diffuses in the fermentation building and condenses into not only the surface of the frame and structural materials, but also condenses, impairing the durability of the building. It also causes other harmful effects.

As one means for preventing a decrease in the amount of water vapor transpiration in winter, it is conceivable to externally heat or heat the septic waste using a fossil fuel or a heater. Although it is a comparatively small fermenter in patent document 2, while providing the lighting means for taking in an external light heat source in a fermenter, the heat storage for storing the heat taken in from this lighting means inside a fermenter There has been proposed a fermentation promoting apparatus provided with means (heat storage medium or the like).
Japanese Patent Publication No. 8-744 Japanese Patent Publication No. 2005-263563

  “Plant sludge to be mixed” described in Patent Document 1 is “dehydrated plant sludge from, for example, a paper mill, etc., and adjusts moisture and solute so that rapid fermentation is possible. (The above publication gazette 5 column 39 lines 42). Plant sludge “has a property of adsorbing organic components and is also fibrous, so it has a large shape-retaining effect and efficiently agglomerates even sludge with a water content of 98% or more” (column 6 line 34). To 38). It is also described as “Excellent as a medium for propagating soil microorganisms such as bacteria” (6th column, lines 37 to 38). Furthermore, the sludge incineration ash is mixed as necessary because “for the deodorization when the bad odor is strong and because a soil improvement effect can be expected as a fertilizer” (column 6 line 41 to line 42). In addition, the flocculant is mixed in “in order to more efficiently aggregate these organic components such as when the water content is particularly high or when there is a large amount of water-soluble protein” (column 6 lines 43 to 45).

  To sum up these descriptions, the technology described in Patent Document 1 basically has a moisture content that can retain septic waste by adding various agglomerates prior to charging the fermenter. It is considered as a kind of moisture adjustment technology that adjusts the amount. Addition of the agglomerate does not change the water content in the septic waste. Since the bulk weight increases by the added amount of the aggregating material, the moisture content is only reduced.

  Moreover, even if the technique of patent document 1 can shorten the time which fermentation requires, the processing amount of perishable waste itself per unit time may reduce by the increase in the above-mentioned bulk weight. Therefore, depending on the technique described in Patent Document 1, it cannot always be said that the fermentation time of the entire septic waste to be treated can be shortened.

  The technique described in Patent Document 2 is a technique in which a heat source is disposed outside or inside the fermenter in order to maintain the transpiration amount of steam and heat of fermentation. Is also required, and the running cost increases. Moreover, once water vapor | steam and odor are diffused from the wide opening of a fermentation tank upper part, it will spread | diffuse to the whole region in a fermentation building. For this reason, even if a ventilation passage or odor collection hood is installed in one area of the fermentation building space, even if it is sucked by suction means, water vapor and odor that cannot be collected remain, and these gradually accumulate in the fermentation building space. It will fill the space in the fermentation building. Once steam and odor are filled in the fermentation building, it becomes increasingly difficult to collect. Even if a large-capacity suction means is used to increase the suction force during collection, not only will the amount of transpiration of water vapor be controlled, but there will still be a lot of water vapor and odor that cannot be collected. Running costs such as cost will also increase. Moreover, such a heating technique does not guarantee that the septic waste in the fermenter is fermented appropriately and quickly.

  In view of the above-mentioned problems of the prior art, the present invention quickly performs effective pre-fermentation by accurately supplying air to be fermented to the laminated septic waste before being put into the fermentation tank. In addition to facilitating fermentation in each fermentation tank, water vapor and odor generated from the intermediate treatment product in the fermentation tank are collected immediately after generation without diffusing out of the fermentation tank, and included in the intermediate treatment product. A high-speed fermentation treatment system for septic waste that performs appropriate fermentation according to the degree of progress of fermentation and efficiently ferment septic waste in a short time as a whole It is to provide.

In order to solve the above problems, the present invention has the following configuration.
That is, the system of the present invention is a primary treatment means for fermenting the septic waste deposited on the floor surface to produce an intermediate treatment product, and a final fermentation for final fermentation of the intermediate treatment product produced by the primary treatment means in the fermentation tank. And processing means.

  The primary processing means includes a pit excavated on the floor surface of the processing yard, and a plurality of injection holes communicating with a supply source of compressed air and ejecting air for fermentation treatment on the surface and disposed in the pit. The air supply pipe and the air supply pipe have a particle diameter that cannot enter the jet hole and the jet hole is hidden at a density that allows the compressed air jetted from the jet hole to pass outside the pit. An inorganic filler filled in the space in the pit and a lattice-shaped lid plate covering the upper opening of the pit. Then, the primary processing means feeds air from the air supply pipe to the septic waste accumulated on the cover plate to make the septic waste wet and rough particulate intermediate treatment product.

  On the other hand, the final processing means travels from the fermenter containing the intermediate processed product generated by the primary processing means and from the input end to the discharge end of the fermenter, and sequentially turns the intermediate processed products while turning over the intermediate processed product. And a turn-back device that moves to the discharge end side.

  The fermenter is a cover body that covers the upper opening of the fermenter main body in which the intermediate processing product is accommodated and the track for running the turning device, and from the intermediate processing product by the fermentation heat between the surface of the intermediate processing product. A cover body that forms a diffusion prevention space for the generated water vapor and has chains attached to both ends, an exhaust passage integrally formed along the longitudinal direction on one side of the fermentation tank body, and the other of the fermentation tank body And an intake passage integrally formed along the longitudinal direction on one side. The exhaust passage and the intake passage communicate with the diffusion prevention space, and the air containing water vapor in the diffusion prevention space communicates with the passage. And a suction means for discharging to the outside through the exhaust path. Further, the turning device includes sprockets at the left and right upper and lower four corners of the front and rear portions.

  Then, the sprocket is engaged with the chain of the cover body, so that the turning device travels on the track in a state of being submerged in the cover body, so that the intermediate processed product in the fermentation tank body covered by the cover body is turned over. The intermediate processed material in the main body of the fermentation tank is fermented while the water vapor generated in the diffusion prevention space accompanying the fermentation is discharged from the exhaust passage.

  The primary processing means is characterized in that an inorganic filler is preliminarily filled in a predetermined manner in a pit in which a supply pipe is disposed. As the filler, an inorganic material that is non-degradable or hardly decomposable and relatively light is selected. For example, zeolite, gravel, rice husk, activated carbon and the like are not limited thereto. These fillers can be used alone or in combination. Since the filler is an inorganic material, unlike a septic waste, it cannot be decomposed by microorganisms or is extremely difficult to be deformed or altered. Any of these materials having a particle diameter that is difficult to enter from the outlet of the supply pipe is used. Furthermore, the filler is filled in the empty space in the pit to such a density that the compressed air can pass out of the pit. Since the filler itself has an irregular shape, it has a considerable gap in contact with each other, and is formed so as to ensure an air flow path while avoiding a compacted state.

  A supply pipe similar to the conventional one can be used, but a supply pipe whose surface layer is covered with a mesh material may be used.

  The intermediate product forms wet rough particles. The water content is approximately 50%, and the muddy or lump state is removed.

  In the fermenter in the final treatment means, the entire upper opening except the vicinity of the intermediate treatment product inlet is covered by the cover body. Thereby, the diffusion prevention space of the water vapor generated from the intermediate treatment product by the fermentation heat is formed between the surface of the intermediate treatment product deposited in the fermentation tank and the back surface of the cover body. And water vapor | steam is discharged | emitted outside a fermentation tank through this diffusion prevention space and an exhaust path. Here, the water vapor collected and discharged from the diffusion prevention space also contains an odor component.

  The water vapor in the diffusion prevention space is sucked through, for example, an exhaust passage formed in the upper part of the side wall of the fermenter and discharged outside the fermenter. In addition, air is introduced into the diffusion prevention space through an intake passage formed on the other side of the fermenter by this suction. The intake passage or the exhaust passage is formed continuously or discontinuously along the length direction of the fermentation tank main body, and the amount of water vapor collected in the diffusion prevention space is adjusted in the length direction of the fermentation tank. Furthermore, by providing partial blockage means in both or either of the intake path and the exhaust path, and adjusting the blockage degree of the blockage means according to the degree of fermentation, the amount of water vapor sucked in that part in the fermentation tank is adjusted. You can also

  The turning device reciprocates in the longitudinal direction of the fermenter along the upper opening end of the fermenter by running on a rail laid on the top end of the fermenter. Sprockets provided at the left, right, top and bottom corners of the front and rear of the turning device engage with chains attached to both ends of the cover body, enabling the turning device to run in the cover body. To do.

  The cover body is preferably a flexible sheet material, but it has a basic position that covers the upper opening of the fermentation tank almost horizontally and a position where the chain is raised upward by being engaged with the sprocket of the turning device. Any material or structure can be used as long as it can be displaced between them. For example, a large number of rigid sheet materials having a required width may be provided continuously in the length direction of the fermentation tank. Further, the cover body may be provided with any means for pulling in the length direction at the front and rear ends in order to regulate the displacement in the width direction.

  The exhaust path of the final processing means is a duct-shaped passage integrally formed along the longitudinal direction on one side of the upper side wall of the fermentation tank, and the intake path is longitudinal on the other side of the upper side wall of the fermentation tank. It is preferable to adopt a configuration in which the duct-shaped passages are integrally formed along the communication path and communicate with the diffusion prevention space via the communication passages. Further, it is preferable to provide means for partially closing the longitudinal direction of either or both of the exhaust passage and the intake passage.

The present invention has the following effects.
In the primary processing means for fermenting the septic waste accumulated on the floor surface to obtain an intermediate treatment product, the fermenting air supply pipe is housed in the pit, and an inorganic filler is provided in the empty space in the pit. Since it is filled in advance, the septic waste located above the supply pipe is blocked by the filler and cannot enter the pit as well as the direct contact with the supply pipe. On the other hand, the air from the supply pipe passes through intricate gaps formed between the fillers, disperses in many directions, passes through the lid from the entire area of the upper opening area of the pit, and passes through the lid. It penetrates into the deposited layer.

  For this reason, not only does the ejection hole of the supply pipe not clog, but also a large number of fermentation air flows can be produced from one ejection hole, and the entire pit can be used as an air ejection hole. As a result, the septic waste can be quickly converted to a wet, rough particulate intermediate treatment product.

  In the final fermentation means for fermenting the intermediate processed product in the fermenter, the upper surface of the intermediate processed product is covered by covering the upper opening of the fermenter with a cover body and running the turning device into the cover body. A water vapor diffusion prevention space containing an odor component generated from the intermediate treatment product is formed above, and the water vapor is contained through an intake passage on one side of the fermentation tank main body and an exhaust passage on the other side wall communicating with the diffusion prevention space. Since the air is discharged to the outside, water vapor and odor are not diffused into the fermentation building space. And since water vapor | steam is discharged | emitted from the diffusion prevention space immediately after generation | occurrence | production, it can be collected efficiently.

  Water vapor and odor in the anti-diffusion space are discharged to the outside as soon as they stay, and the space is warmed by the radiant heat of the fermentation heat. Condensation hardly occurs on the back side.

  While the steam is generated, it is quickly led out of the fermentation tank from the diffusion prevention space, and the heat of fermentation becomes difficult to escape from the treatment tank, so that external factors that inhibit fermentation are reduced and the fermentation process can be shortened. . In addition, by adjusting the suction force to the diffusion prevention space, it is possible to adjust the degree of drying of the surface of the intermediate treatment product and contribute to the optimization of the fermentation treatment. Furthermore, by making it possible to partially close the communication path between the exhaust passage and the diffusion prevention space, it is possible to adjust the moisture according to the degree of fermentation together with the adjustment of the suction amount, and perform a more appropriate fermentation process. Can do.

  Unlike collecting water vapor and odor diffused in a wide space in the fermentation building, water vapor and odor are collected from a narrow diffusion prevention space, so there is no need to use a large-capacity suction means as in the past, This can contribute to the reduction of manufacturing costs and running costs for the entire plant. Moreover, since the mechanism member is not installed in the fermentation tank, the maintenance is minimally necessary.

  Since water vapor does not diffuse in the fermentation building, it is possible to remove the factor that impairs the durability of the fermentation building due to condensation, and maintain the useful life of the building equivalent to that of a general building.

  The chain attached to both ends of the cover body is meshed with the sprockets provided on the left and right sides of the front and rear of the turning device, so that the turning device can go inside the cover body without shifting the cover body in the width direction. Thus, it is possible to travel reliably, and there is no hindrance to the formation of the diffusion prevention space by the cover body while providing a turning device outside the fermentation tank.

  Because the cover body is only partially displaced from the basic position covering the upper opening of the fermentation tank almost horizontally by the meshing relationship between the chain and the sprocket, the flexible sheet material, Or it can manufacture comparatively easily with the member etc. which provided many sheet pieces which have some rigidity.

  Since the intermediate treatment product is wet and rough particles by the primary treatment means, air contact with the intermediate treatment product can be sufficiently performed by the turning device, and the intermediate treatment product is combined with the moisture control described above. A good fermentation product can be obtained quickly.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 7. FIG. 1 is a conceptual configuration diagram of a fermentation treatment system according to an embodiment of the present invention.
This system includes a primary treatment means I for fermenting a septic waste G deposited on the floor of a treatment yard into an intermediate treatment product M, and an intermediate treatment product M generated by the primary treatment means I in a fermentation tank. And final processing means II for denaturing the fermentation product.

  In the figure, reference numeral 1 denotes a floor surface as a processing yard accumulation region of the septic waste G in the fermentation building, and the same or different septic wastes G and G ′ are deposited in a plurality of divided regions, respectively. . Both regions have the same structure. For example, the waste G is preliminarily adjusted to have a moisture content of 65% or less, and preliminary fermentation is performed as a primary treatment in the deposition region.

  Reference numeral 3 denotes a pit (see an enlarged view of FIG. 2) dug in the floor surface, and an air supply pipe 4 is laid therein. The pits 3 are provided in a plurality of rows at regular intervals. The air supply pipe 4 is provided with a large number of air ejection holes 5 at predetermined intervals in the length direction and the circumferential direction. In the supply pipe of FIG. 2, three air ejection holes 5a to 5c are formed in the circumferential direction. The surface layer of the supply pipe 4 is covered with a mesh covering layer 8 to prevent damage due to contact with a filler 6 described later. The base end portion of the air supply pipe 4 is connected to the high-pressure air supply source 2 as seen in FIG.

  The air supply pipe 4 is arranged in the pit so that an empty space 7 is formed around the air supply pipe 4. This empty space 7 is filled with a filler 6 made of granular zeolite. Each zeolite 6 has a diameter larger than the diameter of the air ejection holes 5 or a size that cannot enter the ejection holes, and is filled in the space at such a density that a gap is formed as much as possible on the contact surface. Furthermore, the filler 6 covers the outer side of the supply pipe 4 so that each ejection hole 5 is hidden.

  Reference numeral 9 denotes a lid that covers the opening of the pit 3 and is formed of a lattice-shaped plate material. Many lids 9 having a required length are arranged in series. The opening diameter and size of the lattice are not particularly limited.

In the primary treatment means I, the intermediate treatment product desirably has a three-phase distribution of a solid phase, a liquid phase, and a gas phase, for example, at a solid phase of about 20%, a liquid phase of about 40%, and a gas phase of about 40%. The physical properties are adjusted so as to become wet particles.

FIG. 1 is a schematic configuration diagram of a fermentation apparatus according to an embodiment of the present invention.
In the figure, reference numeral 11 is a general concrete fermenter having an elongated rectangular parallelepiped shape having a length of 80 m, a width of 3 m, and a depth of 2 m, in which an intermediate treatment product M is accommodated and air is forced from the bottom to the middle. The intermediate processed product M is fermented by being sent into the processed product. 12 is a main part of the fermenter in which the intermediate product M is accommodated, 12a is an upper opening of the fermenter main body 2, and 13 is a pair of left and right rails laid along the top of the fermenter 11. .

  Reference numeral 14 denotes a turning device that is guided by the rail 13 and travels in the longitudinal direction of the fermentation tank 11. The intermediate intermediate product M is lifted up by a conveyor 15 with a bucket provided at the lower part, and this is moved backward. By dropping, the intermediate processed material M is turned over while traveling at a slow speed.

  Sprockets 16a to 16d and 17a to 17d are rotatably attached to the turning device 14 at upper, lower, left and right corners of the front surface portion and the rear surface portion, respectively. The lower sprockets 16a, 16b, 17a, and 17b are similarly rotatably attached so that pressing rollers 18 and 19 form a pair on the back. These sprockets 16 and 17 are driven in synchronism with the traveling operation of the turning device 14 and rotate clockwise with respect to the traveling direction of the turning device 14.

  The code | symbol 20 is a cover body which covers the upper opening 12a of the fermenter main body 12, and is the discharge port 12c of the fermenter main body 12 from the position a little away from the inlet 12b of the fermenter 11 with flexible sheet materials, such as a vinyl sheet. The size is formed so as to cover almost the entire area of the upper opening 12 (the whole in the width direction and the length direction). The sheet material may be reinforced by a horizontal frame made of a flexible material having flexibility at a predetermined pitch.

  The cover body 20 may be entirely formed of a single sheet material, but a plurality of cover pieces having a required length may be provided continuously in a caterpillar shape in the longitudinal direction of the fermentation tank. A chain 21 is attached to the cover body 20 along both end portions thereof. The pair of left and right chains 21 are located at a width that meshes with the sprockets 16 and 17 of the turning device 14. Moreover, the front-back direction both ends of the cover body 20 are being fixed to the top end of the fermentation tank 11 so that the cover body 20 may have a certain amount of space in the length direction. A tension that always pulls in the length direction may be applied.

  Reference numeral 22 denotes a diffusion prevention space, which is formed between the fixed cover body 4 and the intermediate treatment product M deposited in the fermentation tank main body, and is air containing water vapor (see FIGS. 6 and 7). ). The front end located on the fermenter input side of the diffusion prevention space 22 is closed by the cover body 20, while the rear end located on the discharge side is opened. What is necessary is just to determine the volume of the diffusion prevention space 22 according to the input amount of the intermediate processed material M to the fermentation tank main body 12. FIG.

  An intake path 27 is formed on one side of the diffusion prevention space 22 along the longitudinal direction of the fermentation tank main body 12, and an exhaust path 23 is formed on the other side. The intake passage 27 and the exhaust passage 23 communicate with the diffusion prevention space 22 through the respective communication passages 24. The communication passage 24 is a relatively narrow passage and is formed continuously or discontinuously along the longitudinal direction of the fermentation tank main body 2.

  In the example shown in the drawing, the intake passage 27 and the exhaust passage 23 are made of concrete and integrated with the fermentation tank main body 2. The intake passage 27 and the exhaust passage 23 may be formed of vinyl chloride. The exhaust passage 23 is connected to a connecting duct 25 (see FIG. 1) on the base end side, and the connecting duct 25 drawn out of the fermentation building is connected to a suction unit 26 (see FIG. 1).

The use state of the above apparatus will be described.
First, in the primary processing means I, when air is sent from the high-pressure air supply source 2 to each supply pipe 4, the air is ejected vigorously from the ejection holes 5 of the supply pipe 4. Even though the periphery of the supply pipe 4 is covered with the filler 6, the ejected air flows through the gap S because there is a considerable gap S between the fillers (see FIG. 2).

  Since the gap S is generated in the empty space so as to be branched in various ways, the blown air is directed upward while being released, forming a large number of air flow paths, and dives through the lattice opening of the lid body 9. It escapes and invades into the deposition layer of the septic waste G deposited on the lid. The entered air becomes an air source necessary for fermentation of the septic waste G.

  The septic waste G at the bottom of the sedimentary layer cannot fall into the vacant space 7 because the vacant space 7 in the pit has already been filled with the filler 6, and the pit passes through the lattice frame opening of the lid 9. In contact with the top surface of the inner filler layer. The upper surface of the filler layer has a large number of air passages as described above. The diameter and size of the air flow path are various, and the smaller the diameter, the faster the flow rate. Will not block.

  Further, since the particles of the septic waste G are blocked by the filler layer and do not come into direct contact with the supply pipe 4, the septic waste G from the ejection holes 5, particularly the upward ejection holes 5 a of the supply pipe 4. There is no risk of particles entering. For this reason, even if it uses for a long period of time, the obstruction | occlusion factor does not accumulate inside a supply pipe.

  Since the filler 6 in the empty space of the pit 3 is made of zeolite, it has a function of partially adsorbing the odor generated from the waste G and suppressing the generation of bad odor. Since the filler 6 is an inorganic material, it does not need to be frequently replaced and can be used for a long time.

  The septic waste G fermented in this way becomes a wet, rough particulate intermediate product M and is transferred to the final fermentation treatment means II such as a fermentation tank.

In the final fermentation processing means II, the intermediate processed product M is thrown into the fermentation tank main body 12, and when the predetermined amount is reached, the turning device 14 is operated. The turning device 14 is initially retracted from the start end direction of the cover body 20 and is embedded in the cover body. That is, the chain 21 on both sides of the cover body start end is first engaged with the lower sprockets 17a and 17b at the rear part of the turning device, and then the upper sprockets 16c and 16d at the front part are straddled across the roof of the turning device 14 from the upper sprockets 17c and 17d at the rear part. By sequentially passing the lower sprockets 16a and 16b, the front part, the roof part, and the rear part of the turning device 14 are covered with the cover body 20. In this state, the fermenter main body 12 is covered with the cover body 20 and the bottom of the turning device 14 except for the vicinity of the inlet and the outlet of the intermediate processed product M.

  The switching device 14 lifts the cover body 20 from the position where the upper opening 12a of the fermentation tank main body 12 is closed and then returns to the closing position again to move back and forth in the longitudinal direction of the fermentation tank 11, but this operation causes the cover body 20 to move forward and backward. Will not shift in the width direction. The turning device 14 moves along the rail 23, the cover body 20 is guided by the lower sprockets 16 a, 16 b, 17 a, 17 b of the turning device 14 to return to the fermenter top surface, and inside the chain 21. This is because the parallel rails 13 and 13 are laid to suppress the shift of the chain 21 in the width direction.

  The turning device 14 repeats forward and backward in small increments at the beginning of operation where the amount of intermediate processed product M in the fermentation tank main body is small, gradually increasing the amount of intermediate processed product M in the fermenter main body and fermenting. Go ahead. This point is the same in a fermenter having a conventional turning device. However, the apparatus of the present invention is different in that the fermenter body 12 is covered with the cover body 20 and the turning device 14 turns over in a state where the turning device 14 enters the cover body. The intermediate processed product M is conventionally processed slowly and without considering the degree of fermentation while moving in the fermenter body in the direction of the discharge port. Fermentation is performed.

  In the device of the present invention, as shown in FIGS. 6 and 7, the diffusion prevention space 22 covered by the cover body 20 and the surrounding environmental structure greatly affect the fermentation. Since the upper opening 12a of the fermentation tank main body 12 is covered by the cover body 20 (or the cover body 20 and the turning device bottom), a diffusion prevention space is provided between the intermediate treatment product M deposited in the fermentation tank main body and the lower surface of the cover body. 22 is formed. The diffusion preventing space 22 has an upper portion of the upper opening 12a that is completely closed at an upper portion of an overwhelmingly large area, while the front end located on the input side is closed by the cover body 20, while on the discharge side. The rear end located is open.

  When the suction unit 26 is operated, the diffusion prevention space 22 receives a suction force through the exhaust passage 23 and the communication passage 24. With this suction force, air is introduced into the diffusion prevention space 22 through the intake passage 27 and the communication passage 24, and a strong flow from the intake passage of the fermentation tank toward the exhaust passage is formed. The water vapor that has begun to evaporate due to the fermentation heat of the intermediate processed product M is directly on the strong air flow that flows through the diffusion prevention space 22 as well as being prevented from evaporating outward by the upper cover body 20. The air is sucked into the exhaust passage 23 through the communication passage 24 and discharged to the outside.

  Since the generated water vapor is led to the exhaust passage 23 quickly without staying in the diffusion prevention space 22, the surface of the intermediate processed material M is dried and further generation of water vapor is promoted. Since the inside of the deposition layer of the intermediate processed product M is not cooled by the air flow, the conventional high temperature state is maintained.

  By appropriately adjusting the suction amount of the suction unit 26, the amount of water vapor collected per unit time can be changed, so that the moisture contained in the intermediate processed product M can be adjusted. Thereby, adjustment to the appropriate moisture content by the progress degree of fermentation is attained. Further, if the suction amount is decreased to weaken the air flow, radiant heat due to the fermentation heat of the intermediate processed product M accumulates in the diffusion prevention space 22 and warms the cover body 20, so that water vapor does not condense on the back surface of the cover body.

Even when the switching device 14 is operating, the water vapor may be sucked. Since water vapor (including odor) hardly leaks out of the fermentation tank, it does not pollute the environment of the internal space of the fermentation building or cause adverse effects.
A shielding plate that partially closes the communication passage 24 of the exhaust passage 23 in the length direction may be attached to be openable and closable. In addition, filters can be attached to the open portions at both ends of the diffusion prevention space 22. In places where fermentation has progressed and the amount of water contained in the intermediate product has decreased, it is also necessary to reduce the evaporation of water vapor. In such a case, the shielding plate is closed to prevent extreme drying of the surface of the intermediate treatment product at that location. The evaporated water vapor is sucked into the exhaust duct 23 from the front and rear open communication passages 24.

  Since the moisture content of the intermediate processed product M is adjusted according to the degree of fermentation and the unreasonable turnover is always performed, the intermediate processed product can be rapidly and reliably fermented. The processed material that has been fermented is, for example, a three-phase distribution in which the liquid phase is about 10% to 30% by volume, the solid phase is about 10% to 20% by volume, and the gas phase is about 50% to 70% by volume. As a physical property, it becomes a dried particulate fermentation product having a water content of around 35% by weight. The fermentation product that has reached the discharge port of the fermentation tank main body is removed from the fermentation tank main body by an appropriate means, and is transferred to a predetermined place.

  In addition, in the apparatus of the said embodiment, it is also possible to apply the air supply means in a primary treatment means to the diffuser tube of a fermentation tank main body bottom part. The cover body used in the device of the present invention may be composed of a plurality of parts that can be separated and joined in the length direction.

The conceptual block diagram of the high-speed fermentation system which concerns on one Embodiment of this invention. Sectional drawing of the supply pipe | tube part used for the primary fermentation processing means of the system of FIG. The block diagram which shows the outline of the final fermentation process means of the system of FIG. 1, and shows the state in which a turning-over apparatus is located in the inlet vicinity of a fermenter main body. The block diagram which shows the outline of the final fermentation process means of the system of FIG. 1, and shows the state which the turning-over apparatus moved to the discharge port side of the fermenter main body. The schematic block diagram which shows the relationship between the turning device used for a final fermentation process means, and a cover body. It is the longitudinal cross-sectional view of the fermenter of FIG. 3, and the figure seen from the direction of the turning device. It is the longitudinal cross-sectional view of the fermenter of FIG. 3, and the figure which looked at the direction without a turning device. The schematic block diagram of the conventional fermentation apparatus.

Explanation of symbols

1-floor surface, 2-high pressure air supply source, 3-pit, 4-air supply pipe, 5 (5a to 5d) -jet hole, 6-filling material, 7-vacant space, 8-covering layer, 9-lid Body, 11-fermentor, 12-fermentor body, 12a-fermentor body upper opening, 12b-inlet, 12c-discharger, 13-rail, 14-turning device, 16, 17-sprocket, 20-cover Body, 21-chain, 22-diffusion prevention space, 23-exhaust passage, 24-communication passage, 27-intake passage,
I-primary fermentation treatment means, II-final fermentation treatment means,
G-septic waste, M-intermediate treated product, A-fermentor, B-treated product, C-turning device, D-input end, E-discharge end

Claims (6)

It consists of primary treatment means for fermenting septic waste deposited on the floor surface into an intermediate treatment product, and final treatment means for final fermentation of the intermediate treatment product generated by this primary treatment means in a fermentation tank,
The primary processing means is:
A pit excavated on the floor surface of the processing yard; an air supply pipe which is communicated with a supply source of compressed air and has a plurality of injection holes formed on the surface for injecting air for fermentation treatment; In the space inside the pit around the air supply pipe, the spray hole has a particle size that cannot enter the ejection hole and the density is such that the compressed air ejected from the ejection hole can pass out of the pit. It is provided with a filled inorganic filler and a grid-like cover plate covering the upper opening of the pit,
Air is sent from the air supply pipe to the septic waste deposited on the cover plate to wet the septic waste into a rough particulate intermediate treatment,
The final processing means is:
A fermenter that stores the intermediate product generated by the primary processing means, and travels from the input end to the discharge end of the fermenter and sequentially moves the intermediate product to the discharge end side while turning over the intermediate product. With a turning device,
The fermenter is a cover body that covers the upper opening of the fermenter main body in which the intermediate processing product is accommodated and the track for running the turning device, and the intermediate processing product by the heat of fermentation between the surface of the intermediate processing product. A cover body that prevents diffusion of water vapor generated from the water and has a chain attached to both ends thereof, an exhaust passage integrally formed along the longitudinal direction on one side of the fermentation tank body, and the other of the fermentation tank body An intake passage integrally formed along the longitudinal direction on one side of the exhaust passage, and the exhaust passage and the intake passage communicate with the diffusion prevention space, and the diffusion prevention space passes through the intake passage and the discharge passage. A suction means for discharging air containing water vapor to the outside,
The turning device includes sprockets at the left and right upper and lower four corners of the front and rear parts,
By engaging the sprocket with the chain of the cover body, the turning device travels on the track with the cover body submerged, thereby turning over the intermediate processed material in the fermentation tank body covered by the cover body. A high-speed fermentation treatment system characterized by fermenting an intermediate treatment product in the main body of the fermentation tank while discharging water vapor generated in the diffusion prevention space along with fermentation from the exhaust passage. The high-speed fermentation treatment system according to claim 1, wherein the filler used for the primary treatment means is any one of rice husk, zeolite, gravel, or a combination thereof.   The high-speed fermentation treatment system according to claim 1, wherein the intermediate processed product is in a state where moisture is around 50% and the mud or lump is removed. The high-speed fermentation processing system according to claim 1, wherein the cover body used for the final processing means is made of a flexible sheet material.   The exhaust path of the final processing means is a duct-shaped passage integrally formed along the longitudinal direction on one side of the upper side wall of the fermentation tank, and the intake path is longitudinal on the other side of the upper side wall of the fermentation tank. The high-speed fermentation treatment system according to claim 1, which is a duct-shaped passage integrally formed along the passageway, and these are in communication with the diffusion prevention space via the communication passage.   6. The high-speed fermentation treatment system according to claim 5, wherein either or both of the exhaust passage and the intake passage are provided with means for partially closing the longitudinal direction thereof.

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