WO2012073948A1 - Organic fertilizer production system - Google Patents

Abstract

[Problem] To provide an organic fertilizer production system capable of changing large volumes of livestock excrement into organic fertilizer efficiently and in a short time, using housefly larva. [Solution] An organic fertilizer production system (10A) comprising: a feed creation means that mixes rice husks (54) and bean curd lees (55), which increase feeding by larva, with excrement (18) to create feed (19); a feed housing means that houses a prescribed volume of feed (19) in a feed housing tray (20); an egg inoculation means that inoculates house fly eggs (51) in the feed (19) housed in the housing tray (20); a larva raising means that feeds the feed (19) housed in the housing tray (20) to the larva that have hatched from the eggs (51) and raises the larva, and creates a fertilizer base for organic fertilizer by the enzymatic degradation of the feed (19) inside the larva and the excretion of same by the larva during the larva raising processing; and a separation means that separates the larva and the fertilizer base by using the peristaltic dispersion behaviour that is active in larva that have passed the pupa metamorphosis stage.

Description

Organic fertilizer production system

The present invention relates to an organic fertilizer production system for producing organic fertilizer from livestock excreta using housefly larvae.

悪 Unhealthy livestock excrement that emits bad odors is not allowed to be dumped in nature without being treated, and it is necessary to cure the excrement for a specified period of time and then detoxify it. However, it is difficult to efficiently process livestock excrement generated in large quantities with the expansion of livestock scale in a short period of time, and the livestock farmer is responsible for processing livestock excrement. An insect bioprocessing system for processing livestock feces for reducing such a burden has been proposed (see Patent Document 1).

The insect bioprocessing system disclosed in Patent Document 1 includes a processing container transporting means for sequentially transporting a processing container in which livestock droppings are placed, and waste provision for donating livestock droppings to empty processing containers that are sequentially sent by the processing container transporting means. Means, insect-repelling means for imparting housefly feces or young larvae to uncured livestock excrement in processing containers to which livestock excrement is supplied and processing containers are stacked in multiple stages and stored for the required period. A waste curing means for curing livestock excrement, an insect recovery means for collecting the larvae of the house fly that emerged from the treatment container during curing, or a spider produced by transformation of the larvae that emerged, and a treatment container transport means after curing. And a waste collection means for collecting the cured animal dung from the processing containers that are sequentially sent. In this insect bioprocessing system, the livestock feces can be rendered harmless or reduced by feeding them to the larvae of the housefly.

Japanese Patent Laid-Open No. 2002-11440

The insect bioprocessing system disclosed in Patent Document 1 feeds livestock feces to housefly larvae and renders the livestock feces detoxified or attenuated. However, when only livestock feces are fed to larvae, It is difficult to improve, and a large amount of livestock droppings may not be processed in a short time. In addition, larva breeding conditions are not clear, and depending on the breeding conditions, egg hatching rate may decrease, larvae survival rate may decrease, larvae growth may be delayed, and animal manure may not be processed efficiently .

An object of the present invention is to provide an organic fertilizer production system capable of efficiently converting livestock excretion into organic fertilizer in a short period of time using a housefly larva.

The premise of the present invention for solving the above problems is an organic fertilizer production system for producing organic fertilizer from livestock excreta using housefly larvae.

The feature of the present invention based on the above premise is that the organic fertilizer production system has a prey preparation means for preparing a prey by mixing a food-enhancement product that enhances the food habits of larvae with the excrement, and a predetermined amount of prey with a predetermined volume of prey container Prey containing means, egg inoculating means for inoculating a plurality of house fly eggs into the prey contained in the prey container, and feeding the prey contained in the prey container on the larvae hatched from the eggs Larvae breeding means to produce a fertilizer base material for organic fertilizer by enzymatic degradation in the larvae's body and excreted from the larvae during the larval breeding process, and active larvae that have entered the metamorphosis stage It is to implement with a separation means for separating the larvae and the fertilizer base material using the peristaltic discrete behavior.

As an example of the present invention, an organic fertilizer production system implements a fertilizer preparation means for mixing an adult dead housefly and a shell of a house fly into a fertilizer base material to produce an organic fertilizer.

As another example of the present invention, in the egg inoculation means, a plurality of eggs are inoculated on the surface of the prey contained in the prey container.

As another example of the present invention, the housefly larvae are classified into 1st instar larvae just after hatching, 2nd instar larvae after one molting, and 3rd instar larvae after two moltings before metamorphosis, In the means, the 1st instar larvae are reared in the dark, the 2nd instar larvae are reared in the dark or twilight, and the 3rd instar larvae are reared in the lighting.

As another example of the present invention, the separation of the larvae and the organic fertilizer using the active peristaltic behavior of the larvae starts on the fourth day after the eggs are inoculated on the prey and ends on the seventh day. The production system kills the larvae separated from the fertilizer base on the 4th day after inoculating the prey with eggs, and the fertilizer base on the 5th day after inoculating the prey with eggs Feed processing means for processing the larvae group separated from the above into feed.

As another example of the present invention, the organic fertilizer production system extracts a part of adults from a group of larvae on and after the fifth day after inoculating eggs into the prey, and grows the extracted larvae into adults. Implement recycling measures to inoculate the next generation of eggs laid on

As another example of the present invention, in the larva breeding means, 65 to 90% of the prey is eaten by the larvae, and the remaining prey of 10 to 35% of the prey is fermented, and the prey is changed to a fertilizer base material.

As another example of the present invention, in an organic fertilizer manufacturing system, a plurality of prey storage containers are stacked in a vertical direction to form a breeding floor, and a plurality of breeding floors are stored in a breeding room having a predetermined volume.

As another example of the present invention, in the organic fertilizer manufacturing system, the temperature inside the breeding room is maintained in the range of 27 to 30 ° C., and the humidity inside the breeding room is maintained in the range of 50 to 70%.

As another example of the present invention, the weight ratio of excreta to the total weight of the prey is in the range of 60 to 80% by weight, and the weight ratio of the food enhancement product to the total weight of the prey is in the range of 20 to 40% by weight. is there.

In another example of the present invention, the food enhancement is rice husk and okara, the weight ratio of rice husk to the total weight of the food enhancement is in the range of 10 to 15% by weight, and the total weight of the food enhancement The weight ratio of okara to is in the range of 85 to 90% by weight.

As another example of the present invention, in the prey preparation means, a food residue is mixed in the excrement, and the food residue is rotted in the excrement to make a prey.

As another example of the present invention, the livestock is at least one of a pig and a chicken.

According to the organic fertilizer manufacturing system according to the present invention, a dietary enhancement product that enhances the feeding property of larvae is mixed with the excrement of livestock to prepare a prey, and the prey contained in the prey container is fed to the housefly larvae. Therefore, it is possible to efficiently convert a large amount of excrement of livestock into a fertilizer base material of organic fertilizer in a short period of time while improving the feeding property of larvae. In addition, when incinerating excreta, not only fuel is consumed, but a large amount of carbon dioxide is emitted, which has an adverse effect on the environment. However, this system may cause malodorous odors and cause the propagation of pathogenic bacteria. This system is a fertilizer for organic fertilizers because the prey containing livestock excreta is enzymatically decomposed and excreted from the larvae. Since the base material is made, there is no consumption of fuel when incinerated, it does not emit carbon dioxide, it does not adversely affect the environment, there is no long-term odor generation or propagation of pathogenic bacteria, The excreta can be processed safely using the food habits of the housefly larvae. The system separates larvae and fertilizer base materials using the active peristaltic discrete behavior of larvae that have reached the stage of cocoon metamorphosis. In addition, it is possible to eliminate manual operation of the housefly larvae and the fertilizer base material, and the larvae and the fertilizer base material can be separated without taking time and effort. The system does not leave the housefly larvae on the fertilizer base, can efficiently collect only the fertilizer base, and can prevent the generation of adult houseflies from the fertilizer base. The system contains chitosan, which is rich in fertilizer base materials, so that these fertilizer base materials can produce organic fertilizers with excellent soil improvement, antibacterial action, plant growth promotion, plant disease control effect, fruit quality improvement, etc. it can.

Organic fertilizer production system that implements fertilizer preparation means to make organic fertilizer by mixing dead body of housefly and dead shell of housefly on fertilizer base material, all of the house fly is made of organic fertilizer It can be used as a waste of material. The system contains chitosan, which is rich in housefly carcasses and housefly cocoons, and can be added to the fertilizer base to improve soil, promote antibacterial activity, promote plant growth, and control plant disease. Organic fertilizers with excellent fruit quality can be made.

In the egg inoculation means, the organic fertilizer production system that inoculates a plurality of eggs on the surface of the prey contained in the prey container, the house fly in the natural world lays the eggs in a heaping state in the medium, Since this increases the hatching rate from eggs and improves the survival rate of seeds, similarly, inoculate multiple eggs on the surface of the prey and increase the hatching rate of larvae that hatch from the inoculated eggs. Can improve the survival rate of housefly larvae. Since the system has a high hatching rate of larvae that hatch from eggs, it is possible to eliminate waste of eggs and to efficiently convert livestock excreta into fertilizer base materials of organic fertilizer using the minimum necessary eggs it can.

Housefly larvae are divided into 1st instar larvae immediately after hatching, 2nd instar larvae after one molting, and 3rd instar larvae after 2 moltings before cocoon transformation. The organic fertilizer production system for rearing, rearing the 2nd instar larvae in the dark or twilight, and rearing the 3rd instar larvae in the lighting, while rearing the 1st instar larvae in the dark and in the dark or twilight By rearing them, the larvae are not stimulated by light, and the 1st and 2nd larvae can be prevented from sinking underneath the prey and hiding inside the prey. You can feed it. The system can feed the prey from the surface to the first-instar larvae or second-instar larvae, so that the residual rate of prey can be reduced, and the larvae can eat most of the prey. Since the system keeps the 3rd instar larvae in the light, the larvae and the fertilizer base material can be reliably separated using the phototaxis of the larvae that have reached the stage of metamorphosis.

Disposal means to kill the larvae group separated from the fertilizer base on the 4th day after inoculating the prey with eggs, and separation from the fertilizer base on the 5th day after inoculating the prey with eggs The organic fertilizer manufacturing system that executes the feed processing means for processing the larvae into feed kills the larvae separated from the fertilizer base on the fourth day, so that other types of insect larvae are mixed in. Even if it exists, the larvae of other insects can be excluded from the larva group, so that only the housefly larvae used in this system can be extracted, and a feed using only the housefly larvae can be produced. Since the system processes the larvae separated from the fertilizer substrate into the feed after the 5th day, it was made only from the housefly larvae used in this system, excluding other types of insect larvae Feed can be produced. The system can make a high protein feed rich in antibacterial proteins by using housefly larvae as a feed, and can also make a feed excellent in promoting growth, enhancing tolerance, improving meat quality, etc. .

Recycling means to extract some larvae from the larvae group on and after the fifth day after inoculating the prey, grow the extracted larvae into adults, and inoculate the prey with the next generation eggs The organic fertilizer production system implements the next generation eggs to adults that have grown a part of the larvae group, and uses the eggs to convert the excrement into a fertilizer base material. There is no need to procure a new material, the house fly can be used in a semi-permanent cycle, and a fertilizer base material can be made at low cost.

In the larva breeding means, 65-90% of the prey is eaten by the larvae, 10-35% of the prey feed is fermented, and the organic fertilizer production system in which the prey becomes a fertilizer base Since the prey is fermented and becomes a part of the fertilizer base material, almost all of the prey can be converted to the fertilizer base material, and a large amount of livestock excreta can be efficiently converted into a fertilizer base material of organic fertilizer in a short period of time. Can do.

An organic fertilizer manufacturing system that creates a breeding floor by stacking a plurality of prey containers in a vertical direction and stores a plurality of breeding floors in a predetermined volume of a breeding room uses a plurality of prey containers as well as a plurality of breeding containers. By using the floor, a large amount of excrement can be efficiently converted into a fertilizer base material in a short time, and a large amount of excrement can be safely processed. The system can raise a large amount of larvae at a time, can produce a large amount of feed, and can produce a large amount of fertilizer substrate.

The organic fertilizer production system in which the temperature in the breeding room is maintained in the range of 27 to 31 ° C. and the humidity in the breeding room is maintained in the range of 50 to 70% maintains the temperature in the breeding room in the above range. By maintaining the humidity in the breeding room within the above range, the breeding room environment for the house fly can be optimized. Organic fertilizer production system can improve the emergence rate by promoting the hatching of larvae from eggs, can prevent the death of larvae due to environmental degradation, improve the survival rate, and promote the growth of larvae be able to. The system not only ensures the survival of housefly eggs and larvae during their growth process, it can improve the survival rate of eggs and larvae, but also uses live larvae to remove livestock excretion in a short period of time. It can be efficiently converted into an organic fertilizer base material.

The organic fertilizer production system in which the weight ratio of excreta to the total weight of the prey is in the range of 60 to 80% by weight and the weight ratio of the food enhancement to the total weight of the prey is in the range of 20 to 40% by weight is The weight ratio of the larvae is in the above range and the weight ratio of the dietary enhancement product is in the above range, so that the larval diet can be enhanced, and a large amount of excreta can be efficiently used as a fertilizer base material for organic fertilizers in a short period of time. Can be changed. The system does not emit carbon dioxide, does not adversely affect the environment, does not generate long-term odors or propagates pathogens, and safely handles livestock excreta using the diet of housefly larvae be able to.

The food enhancement product is rice husk and okara, the weight ratio of rice husk to the total weight of the food enhancement product is in the range of 10-15% by weight, and the weight ratio of okara to the total weight of the food enhancement product is 85- The organic fertilizer production system in the range of 90% by weight uses rice husk and okara as food enhancement, and the weight ratio of rice husk is in the above range, and the weight ratio of okara is in the above range, The feeding property of larvae can be improved, and a large amount of excreta can be efficiently converted into a fertilizer base material of organic fertilizer in a short time. The system does not emit carbon dioxide, does not adversely affect the environment, does not generate long-term odors or propagates pathogens, and safely handles livestock excreta using the diet of housefly larvae be able to.

The organic fertilizer production system, in which food residues are mixed with excrement in the prey preparation means, and the food residues are spoiled in the excrement to create a prey, the large amount of food residues (residual food) that humans produce with livestock excreta The food residue that can be treated and disposed of in large quantities can be efficiently converted into a fertilizer base material of organic fertilizer in a short time. When incinerating food residues, not only fuel is consumed, but a large amount of carbon dioxide is emitted, which has an adverse effect on the environment. This system, which emits malodors for a long period of time, may cause pathogens, but this system is based on the fertilizer base of organic fertilizers because the prey containing food residues is enzymatically decomposed and excreted from the larvae. As a result, there is no consumption of fuel when incinerated, it does not emit carbon dioxide, it does not adversely affect the environment, there is no long-term odor generation, no pathogen growth, The food residue can be safely treated by using the larval diet.

The organic fertilizer production system in which livestock is at least one of pigs and chickens can efficiently convert pig and chicken excrement excreted in large quantities into organic fertilizer base materials in a short period of time. The system uses fertilizers of housefly larvae because the fertilizers of pigs and chickens are digested by enzymes in the body of larvae and excreted from the larvae. And can handle the excrement of birds safely.

The schematic block diagram of the organic fertilizer manufacturing system shown as an example. The side view of the breeding room which accommodated the several breeding floor. The perspective view of the prey storage tray utilized in a system. The elements on larger scale of FIG. The flowchart which shows an example of the procedure implemented in a system. The figure showing the change of the illumination intensity of a breeding room. The side view of the breeding floor which piled up several prey accommodation trays. The top view of the prey accommodation tray in the breeding floor of FIG. The side view of the breeding floor in the state where the 1st instar larvae or the 2nd instar larvae are eating prey. The top view of the prey accommodation tray in the breeding floor of FIG. The side view of the breeding floor which shows the state in which a 3rd instar larva falls to a collection box. The top view of the prey accommodation tray in the breeding floor of FIG. The schematic block diagram of the organic fertilizer manufacturing system shown as another example.

The details of the organic fertilizer manufacturing system 10A according to the present invention will be described below with reference to the accompanying drawings such as FIG. 1 which is a schematic configuration diagram of the organic fertilizer manufacturing system 10A shown as an example. 2 is a side view of a breeding room 17 that houses a plurality of breeding floors 16, and FIG. 3 is a perspective view of a prey containing tray 20 that is used in the organic fertilizer manufacturing system 10A. FIG. 4 is a partially enlarged view showing the convex portion 45 of the storage tray 20 of FIG. In FIG. 3, the front-rear direction is indicated by an arrow X1, the lateral direction is indicated by an arrow X2, and the up-down direction is indicated by an arrow X3.

Organic fertilizer production system 10A produces organic fertilizer from livestock excreta 18 using housefly larvae 50 (see FIG. 9). It is preferable to use “Musca Domestica” as the type of housefly. The kind of housefly larvae 50 has a habit of eating a large amount of food in a short period of time, transforms into a pupa in a short period of time, and emerges from a pupa into an adult. Pigs and chickens can be exemplified as livestock, but this system 10A can also treat the excrement of other livestock (cattle, horse, sheep, etc.), and not only the excrement of livestock but also food residues. The excreta containing can also be processed.

The organic fertilizer manufacturing system 10A uses a raw material receiving pit 11, a stirrer 12, a quantitative cutting machine, a conveyor 13, a belt conveyor 14, a lifting lifter 15, a breeding floor 16, and a breeding room 17, and a prey preparation means, a prey storage means, Implement egg inoculation means, larva breeding means, sorting means, fertilizer making means, killing means, and feed processing means. The raw material receiving pit 11 is a facility for temporarily storing the transported excrement 18 and has a shutter for preventing the emission of malodor, although not shown. The agitator 12 is disposed on the downstream side of the raw material receiving pit 11, and makes the prey 19 by stirring and mixing the excrement 18 and the food enhancement material. The quantitative cutting machine 13 measures the prey 19 and places a set amount of prey 19 on the prey storage tray 20 (prey storage container). The lifter 15 is stacked in the vertical direction of the prey storage tray 20 and used for assembling the breeding floor 16.

The breeding room 17 is capable of adjusting the brightness of the airtight space 23, the internal airtight space 23 having a predetermined volume surrounded by the ceiling 21 and the peripheral wall 22, the air conditioner 24 capable of adjusting the temperature and humidity of the airtight space 23, and the airtight space 23. The lighting device 25 is formed. As shown in FIG. 2, the breeding room 17 is capable of accommodating a plurality of breeding floors 16 in an internal airtight space 25 so as to be detachable, and is provided with an opening / closing door 26 (see FIG. 7) that can be locked and unlocked. A ventilation duct 27 is connected to the ceiling 21 of the breeding room 17.

The air conditioner 24 and the lighting device 25 are connected to a controller (control device) (not shown) via an interface. The air conditioner 24 is connected to the breeding room 17 via a duct 28 extending from the ceiling 21 of the breeding room 17. The air conditioner 24 ventilates the internal hermetic space 23 of the breeding room 17, raises or lowers the temperature of the hermetic space 23 according to an instruction from the controller, and raises or lowers the humidity of the hermetic space 23. The illuminating device 25 is installed in the internal airtight space 23 in the vicinity of the ceiling 21 of the breeding room 17, and adjusts (dimming) the brightness of the airtight space 23 according to an instruction from the controller.

When the breeding floor 16 is accommodated in the breeding room 17, the lighting device 25 is located above the breeding floor 16 and in the vicinity of the front end portions 39 and 43 of the front and rear portions 36 and 37, which will be described later, of the prey storage tray 20 located at the top. To do. For the illumination device 25, a fluorescent lamp or LED illumination is used. The controller is a computer having a central processing unit (CPU or MPU) and a memory. Input / output devices such as a numeric keypad unit and a display are connected to the controller via an interface.

A temperature sensor (not shown) and a humidity sensor (not shown) installed in the internal airtight space 23 are connected to the controller via an interface, and an illuminance sensor (not shown) installed in the airtight space 23 is connected to the controller. Connected through an interface. The controller memory stores the set temperature, set humidity, and set illuminance of the internal hermetic space 23. The set temperature, set humidity, and set illuminance can be freely set via the numeric keypad unit. The temperature sensor measures the temperature of the internal hermetic space 23 and outputs the measured temperature to the controller. The humidity sensor measures the humidity of the internal airtight space 23 and outputs the measured humidity to the controller. The illuminance sensor measures the illuminance of the internal hermetic space 23 and outputs the measured illuminance to the controller.

The controller compares the measured temperature output from the temperature sensor with a preset temperature, and performs feedback control so that the measured temperature falls within the set temperature range. Specifically, when the measured temperature is outside the set temperature range, a feedback signal that eliminates the error between the measured temperature and the set temperature is output to the air conditioner 24, and the air conditioner 24 is feedback controlled (inverter control). The temperature of the internal airtight space 23 is maintained at a set temperature.

The controller compares the actually measured humidity output from the humidity sensor with a preset set humidity, and performs feedback control so that the actually measured humidity falls within the set humidity range. Specifically, when the actually measured humidity is outside the range of the set humidity, a feedback signal for eliminating an error between the actually measured humidity and the set humidity is output to the air conditioner 24, and the air conditioner 24 is feedback controlled to control the internal airtightness. The humidity of the space 23 is maintained at the set humidity. The controller compares the measured illuminance output from the illuminance sensor with the preset illuminance, and controls the illuminance of the lighting device 25 so that the measured illuminance becomes the set illuminance.

The breeding floor 16 is formed of a collection box 29 (see FIG. 7), a plurality of prey storage trays 20, a collection box 29 and a fixed frame 30 (see FIG. 7) that detachably supports the storage trays 20. ing. The collection box 29 is disposed inside the fixed frame 30 and is located below the prey storage tray 20 disposed at the lowest position. The collection box 29 includes an accommodation recess 31 having a rectangular planar shape and an inclined wall 32 connected to the periphery of the accommodation recess 31. The inclined wall 32 is inclined upward and downward in the vertical direction from the housing recess 31 outward. The prey storage tray 20 is disposed inside the fixed frame 30 and is arranged at regular intervals in the vertical direction. The collection box 29 and the prey storage tray 20 are made of a plastic such as a thermosetting synthetic resin or a thermoplastic synthetic resin, or a metal such as aluminum or duralumin.

As shown in FIG. 3, the prey containing tray 20 has a bottom wall 33 having a rectangular planar shape, and both side walls 34 vertically rising from both side edges of the bottom wall 33. The bottom wall 33 includes a central portion 35 that extends horizontally, a front portion 36 that extends forward from the central portion 35 in the front-rear direction, and a rear portion 37 that extends rearward from the central portion 35 in the front-rear direction. In the front portion 36, a base end portion 38 positioned on the side of the central portion 35 is connected to the central portion 35, and a tip end portion 39 positioned on the opposite side of the base end portion 38 is connected to the upper portions of the side walls 34. The front portion 36 is inclined at a predetermined angle upward in the vertical direction from the proximal end portion 38 toward the distal end portion 39. The front portion 36 is formed with an inclined surface 40 inclined upward at a predetermined angle from the base end portion 38 toward the tip end portion 39 in the vertical direction. As shown in FIG. 4, a plurality of convex portions 41 are formed at the front end portion 39 of the front portion 36 so as to be spaced apart at equal intervals in the lateral direction. A slope 40 is located between the convex portions 41.

The rear portion 37 has a proximal end portion 42 located on the central portion 35 side connected to the central portion 35 and a distal end portion 43 located on the opposite side of the proximal end portion 42 connected to the upper portions of the side walls 34. The rear portion 37 is inclined at a predetermined angle upward in the vertical direction from the proximal end portion 42 toward the distal end portion 43. The rear portion 37 is formed with a slope 44 that is inclined upward at a predetermined angle from the base end portion 42 toward the tip end portion 43 in the vertical direction. A plurality of convex portions 45 are formed at the distal end portion 43 of the rear portion 37 so as to be spaced apart at equal intervals in the lateral direction. A slope 44 is located between the convex portions 45.

Locating convex portions 46 that are convex upward in the vertical direction are formed on the upper portions of the side walls 34. A positioning recess 47 is formed in the lower part of the side walls 34 so as to be recessed upward in the vertical direction and to which the positioning protrusion 46 is detachably fitted. In the prey storage tray 20, a predetermined volume of prey storage recess 57 is defined by the bottom wall 33 and the side walls 34. In the prey storage recess 57 of the prey storage tray 20, a guide line 48 serving as a reference when the prey 19 is spread there is displayed.

In the prey storage recess 57, three partition plates 49a to 49c extending in the front-rear direction and spaced apart at equal intervals in the lateral direction are installed. The partition plates 49 a and 49 c extend from the front end portion 39 of the front portion 36 of the bottom wall 33 toward the central portion 35 and reach the center of the central portion 35. The partition plate 49 b extends from the distal end portion 43 of the rear portion 37 of the bottom wall 33 toward the central portion 35 and reaches the center of the central portion 35. In addition, the number of partition plates is not limited to three in the drawing, and four or more partition plates may be installed in the prey accommodation recess 57.

The prey accommodation tray 20 is arranged and fixed inside the fixed frame 30, and six of them are stacked in a state of being spaced apart at equal intervals in the vertical direction. In addition, there is no limitation in particular in the number of the food storage trays 20 in the breeding floor 16, and seven or more storage trays 20 may be stacked. In the prey storage tray 20, the positioning convex portion 46 of the storage tray 20 positioned above is fitted into the positioning concave portion 47 of the storage tray 20 positioned below, and the storage trays 20 are fixed in the vertical direction.

FIG. 5 is a flowchart showing an example of a procedure performed in the system 10A, and FIG. 6 is a diagram showing a change in illuminance of the breeding room 17. FIG. 7 is a side view of the breeding floor 16 in which a plurality of food storage trays 20 are stacked, and FIG. 8 is a top view of the food storage tray 20 in the breeding floor 16 of FIG. FIG. 9 is a side view of the breeding floor 16 in a state where the first-instar larva 50a or the second-instar larva 50b eats the prey 19 and FIG. 10 is a top view of the prey containing tray 20 in the rearing floor 16 of FIG. is there. FIG. 11 is a side view of the breeding floor 16 showing a state in which the third-instar larva 50c falls into the collection box 29, and FIG. 12 is a top view of the prey containing tray 20 on the breeding floor 16 of FIG. 7 and 8, the prey 19 is stored in the prey storage tray 20, and the eggs 51 are inoculated on the surface of the prey 19. 11 and 12, a part of the prey 19 eaten by the larva 50c is changed to a fertilizer base material 52. 7, 9, and 11, illustration of the partition plates 49 a to 49 c and the air conditioner 24 is omitted.

Each means implemented in the organic fertilizer manufacturing system 10A of FIG. 1 will be described as follows. In the following description, pig excreta will be described as an example of the excreta 18. The excrement 18 (feces and urine) of the pigs raised in the pig farms in various places is collected by the transport vehicle 53 (vacuum car), and the excrement 18 is conveyed to the raw material receiving pit 11. The waste 18 is transferred from the transport vehicle 53 to the raw material receiving pit 11 and pooled (stored) in the raw material receiving pit 11. Next, a predetermined amount of excreta 18 is charged into the stirrer 12 from the raw material receiving pit 11 using a belt conveyor (not shown). In addition to the excreta 18, rice husk 54 (food enhancer) and okara 55 (food enhancer) are charged into the agitator 12, and they are agitated and mixed in the agitator 12 to produce a prey 19 (prey preparation means). ).

Eating habits (rice husk 54 and okara 55) not only enhance the eating habits of the housefly larva 50, but also function as a moisture control material for the excreta 18. When the excreta 18 contains a lot of water, the amount of the food enhancement product (mixed amount) is increased. When the water content of the excrement 18 is insufficient, the water 56 is added to the excrement 18 together with the food-enhancing product. In this system 10 </ b> A, the moisture content of the prey 19 is adjusted and the viscosity (hardness) of the prey 19 is adjusted by mixing the food-enhancement product and water 56 into the excreta 18. It should be noted that at least one of rice husk 54 and okara 55 can be used as the food enhancement product. In addition to rice husk 54 and okara 55, the food enhancement products include sake lees, stepping lees, mirin lees, coffee lees, shochu lees, beer lees, rapeseed lees, pine lees, tea lees, wine lees, starch lees Can be used.

The weight ratio of the excreta 18 to the total weight of the prey 19 is in the range of 60 to 80% by weight. If the weight ratio of the excrement 18 is less than 60% by weight, it takes time to treat the excrement 18, and a large amount of the excretion 18 cannot be efficiently converted into the fertilizer base material 52 of organic fertilizer in a short time. When the weight ratio of the excreta 18 exceeds 80% by weight, the weight ratio of the food-enhancing product to the prey 19 decreases, and the food quality of the larvae 50 cannot be increased, and most of the excreta 18 is eaten by the larvae 50. In some cases, a large amount of waste 18 may remain, and the large amount of waste 18 cannot be efficiently converted to the fertilizer base material 52 of organic fertilizer in a short period of time. In this system 10A, since the weight ratio of the excreta 18 to the total weight of the prey 19 is in the above range, a large amount of the excreta 18 can be efficiently and efficiently fertilized as a fertilizer base material in a short period of time while improving the food habits of the larvae 50. It can be changed to 52.

The weight ratio of the food enhancement product to the total weight of the prey 19 is in the range of 20-40% by weight. When the weight ratio of the dietary enhancement product is less than 20% by weight, the dietary enhancement product is less than the prey 19, and the food quality of the larvae 50 cannot be enhanced. The fertilizer base material 52 cannot be changed. When the weight ratio of the dietary enhancement exceeds 40% by weight, the weight ratio of the excrement 18 to the prey 19 decreases, and it takes time to process the excretion 18, and a large amount of the excretion 18 is efficiently organicized in a short time. The fertilizer base material 52 cannot be changed. Moreover, the moisture of the prey 19 decreases, the viscosity of the prey 19 increases more than necessary, the prey 19 hardens, and the larva 50 may not be able to eat the prey 19 smoothly. In this system 10A, since the weight ratio of the food enhancement product to the total weight of the prey 19 is in the above range, the food property of the larvae 50 can be improved, and a large amount of the excreta 18 can be efficiently fertilized in a short period of time. The substrate 52 can be changed. In addition, when using foodstuffs other than rice husk 54 and okara 55 as the food enhancement product, the weight ratio of the food enhancement product to the total weight of the prey 19 is adjusted to a range of 20 to 40% by weight.

When rice husk 54 and okara 55 are used as food enhancement products, okara 55 has a role of moisture control but has a large effect of improving food habits, and rice husk 54 has a role of moisture control but has a role of moisture control. Therefore, the weight ratio of the rice husk 54 to the total weight of the food enhancement product is in the range of 10 to 15% by weight, and the weight ratio of Okara 55 to the total weight of the food enhancement product is in the range of 85 to 90% by weight. If the weight ratio of the rice husk 54 exceeds 15% by weight and the weight ratio of okara 55 is less than 85% by weight, it is difficult to sufficiently improve the eating habits of the larvae 50, and a large amount of excreta 18 is efficiently produced in a short period of time. It is often difficult to change to a fertilizer base material 52 of organic fertilizer. In this system 10A, since the weight ratio of the rice husk 54 and the okara 55 to the total weight of the food-enhancing product is in the above range, the food property of the larva 50 can be sufficiently enhanced, and a large amount of excreta 18 can be removed in a short period of time. The organic fertilizer base material 52 can be changed efficiently.

After the excrement 18 and the food-enhancement product (rice husk 54, okara 55) are added to the stirrer 12 (there is a case where water 56 is added), the food 19 is prepared by stirring and mixing them. It is transferred from the stirrer 12 to the quantitative cutout machine 13. In the quantitative cutting machine 13, the prey 19 is weighed, and a set amount of prey 19 is discharged from its outlet. The set amount of prey 19 discharged from the discharge port of the fixed quantity cutting machine 13 falls to the prey storage tray 20 located below the cutting machine 13 and accommodates the prey in the storage tray 20 placed on the belt conveyor 14. Housed in the recess 57 (prey storage means). The prey 19 is leveled substantially flat according to the reference line 48 of the prey containing tray 20.

The prey storage tray 20 in which the prey 19 is stored moves from the fixed quantity cutter 13 to the lifter 15 by the belt conveyor 14. In the process in which the prey containing tray 20 moves on the belt conveyor 14 from the quantitative cutout machine 13 to the lifter 15, a predetermined amount of the housefly eggs 51 are inoculated on the surface of the prey 19 (egg inoculation means).

In the egg inoculation means, the eggs 51 are not uniformly distributed over the entire surface of the prey 19, but a plurality of eggs 51 are formed on the surface of the prey 19, as shown in FIG. The heap is inoculated in a state where the front and rear portions 36 and 37 are spaced apart at substantially equal intervals in the horizontal direction. In the same way, a plurality of eggs 51 can be obtained because naturally occurring house flies spawn a plurality of eggs in a medium in a medium, thereby increasing the hatching rate from the eggs and improving the survival rate of the seeds. The surface of the prey 19 is inoculated in a pile. Thereby, the hatching rate of the larva 50 which hatches from the inoculated egg 51 can be improved, and it becomes possible to improve the survival rate of the larva 50.

In the egg inoculation means, the weight ratio of the egg 51 to the total weight of the prey 19 is in the range of 0.002 to 0.004% by weight. When the weight ratio of the eggs 51 is less than 0.002% by weight, the number of larvae 50 hatched from the eggs 51 is small, and the larvae 50 cannot feed most of the prey 19, and a large amount of prey 19 remains, and the prey 19 It is difficult to change most of them to the fertilizer base material 52. When the weight ratio of the eggs 51 exceeds 0.004% by weight, too many larvae 50 hatched from the eggs 51, the prey 19 becomes insufficient, and the growth of the larvae 50 is delayed, so that the excreta 18 can be processed efficiently. I can't. In this system 10A, since the weight ratio of the egg 51 is in the above range, the balance between the prey 19 and the number of larvae 50 hatched from the egg 51 is balanced, and the larva 50 hatched from the egg 51 does not run out of the prey 19; Without wasting the eggs 51, the prey 19 can be eaten in a short time using the larvae 50 hatched from the eggs 51, and the excreta 18 is efficiently organic fertilizer without a large amount of prey 19 remaining. The fertilizer base material 52 can be changed.

After inoculating the eggs 51, the prey storage tray 20 is stacked in the vertical direction by the lifter 15 to form a rearing floor 16 having a hierarchical structure. As shown in FIG. 2, a plurality of breeding floors 16 are accommodated in an internal airtight space 23 of the breeding room 17. Rails 58 are laid in the breeding room 17, and the wheels 59 of the breeding floor 16 are fitted to the rails 58, and the breeding floor 16 is fixed to the breeding room 17 so as to be able to run.

In FIG. 2, three breeding floors 16 are accommodated in the breeding room 17, but the number of breeding floors 16 is not limited to three, and four or more breeding floors 16 are accommodated in the breeding room 17. There is also a case. After housing the breeding floor 16 in the breeding room 17, the door 26 is closed and the door 26 is locked. Note that when the breeding floor 16 is housed in the breeding room 17, the air conditioner 24, the lighting device 25, and the controller are in operation.

The controller maintains the temperature of the internal airtight space 23 of the breeding room 17 at the set temperature via the air conditioner 24 while comparing the measured temperature output from the temperature sensor with the set temperature, and the measured temperature output from the humidity sensor. The humidity of the airtight space 23 is maintained at the set humidity via the air conditioner 24 while comparing the humidity with the set humidity. The controller maintains the temperature of the internal airtight space 23 of the breeding room 17 in the range of 27 to 31 ° C., and maintains the humidity of the airtight space 23 in the range of 50 to 70%. When the temperature of the internal airtight space 23 is less than 27 ° C., the hatching of the eggs 51 is delayed and the growth of the larvae 50 is delayed, so that a large amount of excreta 18 cannot be efficiently converted into the fertilizer base material 52 of organic fertilizer in a short time. . When the temperature of the internal airtight space 23 exceeds 31 ° C., the hatching rate of the eggs 51 decreases due to heat, the number of larvae 50 decreases, and the hatched larvae 50 may die, and the excreta 18 is processed. It may not be possible.

If the humidity of the internal airtight space 23 of the breeding room 17 is less than 50%, the hatching rate of the eggs 51 decreases, the number of larvae 50 decreases, the growth of the larvae 50 is delayed, and a large amount of excreta 18 is removed in a short time. It cannot be efficiently changed to the fertilizer base material 52 of organic fertilizer. When the humidity of the internal airtight space 23 exceeds 70%, the appetite of the larvae 50 is reduced, the larvae 50 are easily affected, and the larvae 50 may die, and the excreta 18 may not be processed. The system 10A can promote the hatching of the larva 50 from the egg 51 by maintaining the temperature of the internal hermetic space 23 in the above range and maintaining the humidity of the airtight space 23 in the above range. The growth can be promoted, the eggs 51 and the larvae 50 can be reliably survived during the growth process, and the hatching rate of the eggs 51 and the survival rate of the larvae 50 can be improved.

In the breeding room 17, the larva 50 hatches from the egg 51 on the first day after inoculating the egg 51 into the prey 19. The larvae 50 hatched from the eggs 51 are classified into a first-instar larva 50a immediately after hatching, a second-instar larva 50b after one molting, and a third-instar larva 50c after two moltings before cocoon transformation. The first-instar larvae 50a are larvae 50a from the inoculation of the egg 51 to the second day, and the second-instar larvae 50b are inoculated until the first day after the second day after the inoculation of the egg 51 (the egg 51 It is a larva 50b on the third day after inoculation). The third-instar larvae 50c are larvae 50c from the first day to the third day after the third day after the inoculation of the egg 51 (the fourth to seventh days after the inoculation of the egg 51). The larvae 50a to 50c grow on the prey 19 stored in the prey storage tray 20.

In this organic fertilizer manufacturing system 10A, the larvae 50a to 50c are fed by feeding the prey 19 to the larvae 50a to 50c, and in the rearing process in which the larvae 50a to 50c grow using the prey 19 as a prey, the prey 19 is the larvae 50a to 50c. Is excreted from the larvae 50a to 50c, and the prey 19 (livestock excrement 18) is changed to a fertilizer base material 52 of organic fertilizer (larva rearing means). In the larva rearing means, 65 to 90% of the prey 19 is eaten by the larvae, and the remaining 10 to 35% of the prey 19 is left. The prey 19 left by the larvae 50a to 50c becomes part of the fertilizer base material 52 by fermentation. In the fertilizer base material creation means, as shown in FIG. 6, the first-instar larvae 50a are reared in the dark in the dark breeding room 17a, and the second-instar larvae 50b are reared in the dark or twilight rearing room 17b. At the same time, the third-instar larvae 50c are bred in a bright breeding room 17c under illumination.

The controller darkens the breeding room 17a and keeps the eggs 51 to the first-instar larvae 50a in the dark without turning on the lighting device 25 until the second day after the inoculation of the eggs 51. The breeding room 17 has a structure in which light is not inserted from the outside. The system 10A keeps the first-instar larvae 50a in the dark (darkness), so that the first-instar larvae 50a do not get stimulated by light, and the first-instar larvae 50a are hidden under the prey 19 or hidden inside the prey 19 It is possible to prevent the larva 50a from eating from the surface of the prey 19.

The controller makes the breeding room 17b dark without turning on the lighting device 25 until the first day after the second day after inoculating the egg 51 (the third day after inoculating the egg 51). The larvae 50b are reared in the dark (darkness), or the lighting device 25 is turned on to light the rearing room 17b, and the second-instar larvae 50b are reared in the twilight. The system 10A keeps the 2nd instar larvae 50b in the dark or twilight, so that the 2nd instar larvae 50b do not incline under the prey 19 or hide inside the prey 19 without being stimulated by light. It is possible to prevent the larva 50b from eating from the surface of the prey 19.

From the first day to the third day after the third day after the inoculation of the egg 51 (from the fourth to the seventh day after the inoculation of the egg 51), the controller turns on the lighting device 25 and raises the breeding room 17c. The 3rd instar larvae 50c are reared in the lighting. The light from the illumination device 25 illuminates the front end portions 39 and 43 of the front and rear portions 36 and 37 of the prey storage tray 20, and the third-instar larva 50 c moves to the front end portions 39 and 43 of the front and rear portions 36 and 37 of the storage tray 20. Promote. After the larvae 50 eat most of the prey 19, the larvae 50 become the third-instar larvae 50 c, and the cocoon transformation period is reached. The third instar larva 50c has a discrete behavior (peristaltic discrete behavior) when it transforms into a cocoon. In other words, he actively moves for a place to become a habit.

The third-instar larvae 50c that have reached the stage of cocoon transformation are actively perturbed in search of a place to become a cocoon, and are guided to the lighting device 25 by the phototaxis while moving around the bottom wall 33 of the prey storage tray 20, The slopes 40 and 44 are scooped up from the central portion 35 of the wall 33 and moved from the central portion 35 toward the front end portions 39 and 43 of the front and rear portions 36 and 37. As shown in FIGS. 11 and 12, the third instar larva 50c that has moved to the tip portions 39 and 43 of the front and rear portions 36 and 37 is formed by the projections 41 and 45 formed on the tip portions 39 and 43 of the front and rear portions 36 and 37. It enters the slopes 40 and 44 between them, climbs further up the slopes 40 and 44, gets over the front ends of the front and rear portions 36 and 37, and falls from the front ends of the front and rear portions 36 and 37 toward the collection box 29.

The third-instar larvae 50c from the central portion 35 of the bottom wall 33 toward the both side walls 34 abut against the partition plates 49a to 49c, and the inclined surfaces 40 and 44 from the central portion 35 of the bottom wall 33 along the partition plates 49a to 49c. Is moved from the central portion 35 toward the front end portions 39 and 43 of the front and rear portions 36 and 37, gets over the front ends of the front and rear portions 36 and 37, and falls toward the collection box 29. Alternatively, it strikes against the side walls 34 and rises along the side walls 34 from the central portion 35 of the bottom wall 33 to the slopes 40 and 44, and moves from the central portion 35 toward the tip portions 39 and 43 of the front and rear portions 36 and 37. Then, it passes over the front and rear ends of the front and rear portions 36 and 37 and falls toward the collection box 29.

In the organic fertilizer manufacturing system 10A, the third-instar larva 50c that has reached the stage of cocoon transformation falls to the collection box 29 from the tips of the front and rear portions 36 and 37 of the prey storage tray 20, and the larvae are utilized using the habit of the third-instar larva 50c. 50c and the fertilizer base material 52 are separated (sorting means). This system 10A can separate the larva 50c and the fertilizer base material 52 without manual intervention by utilizing the habit of the third-instar larva 50c. In addition, by breeding the third-instar larvae 50c in the light, it is possible to reliably separate the larvae 50c and the fertilizer base material 52 using the phototaxis of the larvae 50c that have reached the stage of cocoon metamorphosis.

In the organic fertilizer manufacturing system 10A, the separation between the third instar larva 50c and the fertilizer base material 52 starts on the fourth day after the inoculation of the eggs 51 on the prey 19 and ends on the seventh day. Therefore, it grows from the egg 51 to the third instar larva 50c before metamorphosis in a maximum of 7 days. In this system 10A, a group of third-instar larvae 50c separated from the fertilizer base material 52 is killed on the fourth day after the eggs 51 are inoculated to the prey 19 (killing means). In the killing means, the third-instar larvae 50c on the fourth day after inoculating the prey 19 with the eggs 51 are taken out of the collection box 29, and the larvae 50c are incinerated. Not only the housefly larvae 50 used in the system 10A but also other kinds of insect larvae may be mixed in the livestock excreta 18, but they were separated from the fertilizer base material 52 on the 4th day. By killing the group of instar larvae 50c, other kinds of insect larvae mixed in the excreta 18 can be excluded from the group of housefly larvae 50 used in the system 10A.

The reason for killing the group of 3rd instar larvae 50c separated from the fertilizer substrate 52 on the 4th day after inoculating the prey 19 with the egg 51 is that the excrement should occur before the prey 19 is inoculated with the egg 51. Since larvae of other insects are lurking in 18 and have already grown as larvae, on the 4th day they are often the last-aged larvae just before becoming pupae, This is because the larvae of other insects can be eliminated together by killing the group.

In the organic fertilizer production system 10A, 95 to 99%, preferably 97 to 98.5, of the group of third-instar larvae 50c separated from the organic fertilizer 52 after the fifth day after inoculating the prey 19 with the eggs 51, is preferred. % Larvae 50c are processed into feed (feed processing means), and the remaining 1-5%, preferably 1.5-3% larvae 50c are extracted, and the larvae 50c are grown into adults. Next-generation eggs 51 are laid on adults grown from (recycling means).

In the feed processing means, these third-instar larvae 50c are treated with hot water, dehydrated and stored frozen. Alternatively, the larvae 50c are subjected to a hot water bath, dehydrated, dried, and stored at room temperature. Alternatively, these larvae 50c are subjected to a hot water treatment, then dehydrated, dried, powdered and stored at room temperature. The feed produced by the feed processing means is mixed in pet food or used as fish food or bird food.

Since the organic fertilizer manufacturing system 10A processes a group of third-instar larvae 50c separated from the fertilizer base material 52 on and after the fifth day into feed, the system 10A eliminates other types of insect larvae. A feed made only from the housefly larvae 50 can be produced. In addition, by using the housefly larva 50 as a feed, a high-protein feed rich in antibacterial proteins can be made, and a feed excellent in promoting growth, strengthening tolerance and improving meat quality can be made. .

In the recycling means, while keeping the temperature of the internal airtight space 23 of the breeding room 17 at the set temperature (27 to 31 ° C.) using the air conditioner 24 while the 3rd instar larva 50c is housed in the collection box 29, the airtight space The humidity of 23 is maintained at the set humidity (50 to 70%), and the remaining larvae 50c are transformed into cocoons. Next, the pupae are collected from the collection box 29, transferred to a breeding gauge (not shown), and the pupae emerge as adults of the house fly. After emergence, the cocoon shells are collected from the breeding gauge. The next-generation eggs 51 are collected by feeding the house flies that emerged from the cocoon and breeding the house flies while spawning the house flies. The adult housefly carcasses are recovered from the rearing gauge. By inoculating the next-generation egg 51 into the prey 19, the larva 50 hatched from the egg 51 is treated with the excreta 18.

The organic fertilizer manufacturing system 10 </ b> A lays the next generation egg 51 on the adult housefly that has grown the remaining larvae 50 c extracted from the group of the third instar larvae 50 c, and uses the eggs 51 to fertilize the excreta 18. Since it changes to the material 52, it is not necessary to procure a new housefly egg 51 from the outside, the housefly can be used in a semi-permanent cycle, and the fertilizer base material 52 can be made at low cost.

The fertilizer base material 52 made by the larva rearing means is collected from the prey storage tray 20 and is put into a dryer (not shown). In addition to the fertilizer base material 52, cocoon shells and adult housefly dead bodies are fed into the dryer. The fertilizer base material 52, the cocoon husks, and the adult carcasses of the housefly are stirred and mixed in a dryer at a predetermined temperature for a predetermined time and dried. In the larva breeding means, an organic fertilizer is made by mixing the fertilizer base material 52, the cocoon husks, and the dead carcasses of the house fly. The organic fertilizer is weighed and then packaged.

The organic fertilizer manufacturing system 10A can use all of the house flies as materials for organic fertilizers, and can eliminate waste of materials. System 10A contains chitosan rich in housefly carcasses and housefly cocoons, so it can be added to fertilizer base 52 to improve soil, antibacterial action, promote plant growth, plant disease. Organic fertilizers with excellent inhibitory effects and fruit quality improvements can be made.

The organic fertilizer manufacturing system 10A mixes a food enhancement product that enhances the food habits of the housefly larva 50 with the livestock excreta 18 to create a prey 19, and the prey 19 stored in the prey containing tray 20 is used as the larva 50a to 50c. Therefore, a large amount of livestock excreta 18 can be efficiently converted into an organic fertilizer base material 52 in a short period of time while improving the food habits of the larvae 50a to 50c. In addition, when the excreta 18 is disposed of by incineration, not only fuel is consumed, but a large amount of carbon dioxide is discharged, which has an adverse effect on the environment. In this case, the system 10A may give off a bad odor for a long time and cause the propagation of pathogenic bacteria. However, the prey 19 including the livestock excreta 18 is enzymatically decomposed in the larvae 50a to 50c and the larvae 50a to Since the fertilizer base material 52 of the organic fertilizer is made by being excreted from the 50c, not only the fuel is not consumed in the case of incineration, but it also does not discharge carbon dioxide and does not adversely affect the environment. The excreta 18 can be safely treated using the food habits of the larvae 50a to 50c without generation of malodor during the period and propagation of pathogenic bacteria.

FIG. 13 is a schematic configuration diagram of an organic fertilizer manufacturing system 10B shown as another example. The system 10B of FIG. 13 is different from that of FIG. 1 in that the food residue 60 is mixed into the excrement 18 stored in the raw material receiving pit 11, and the other configuration is the same as the system 10A of FIG. Therefore, the same reference numerals as those in FIG. 1 are attached, and the description of FIG. 1 is used, and detailed description of other components of the system 10B is omitted.

13 includes a raw material receiving pit 11, a stirrer 12, a quantitative cutting machine, a conveyor 13, a belt conveyor 14, a lifter 15, a breeding floor 16, and a breeding room 17. The food residue 60 (residue) is mixed into the excrement pooled (stored) in the raw material receiving pit 11, and the food residue 60 rots in the excrement 18. After the food residue 60 has been rotted, a predetermined amount of excreta 18 and the food residue 60 are introduced into the agitator 12 from the raw material receiving pit 11. In addition to the excrement 18 and the food residue 60, the stirrer 12 is supplied with rice husk 54 (food enhancement product) and okara 55 (food enhancement product), which are stirred and mixed in the stirrer 12 to produce a prey 19. (Prey creation means). When the excrement 18 and the food residue 60 are deficient in water, the water 56 is added to the excrement 18 together with the food enhancement material.

Note that the weight ratio of the food residue 60 to the total weight of the excreta 18 is in the range of 10 to 50% by weight. When the weight ratio of the food residue 60 is less than 10% by weight, the treatment amount of the food residue 60 is small, and a large amount of the food residue 60 cannot be efficiently converted into the fertilizer base material 52 of organic fertilizer in a short time. If the weight ratio of the food residue 60 exceeds 50% by weight, it takes a long time to cause the food residue 60 to rot in the excreta 18 and it is difficult to make the prey 19 in a short time. Moreover, the processing amount of excrement falls and excrement cannot be efficiently changed into the fertilizer base material 52 of an organic fertilizer in a short time. Since the weight ratio of the food residue 60 is in the above range, the system 10B can process a large amount of the food residue 60 produced by humans together with the livestock excreta 18, and the food residue 60 to be disposed of in a large amount in a short time. It can be efficiently changed to the fertilizer base material 52 of organic fertilizer.

The weight ratio of the excrement 18 to the total weight of the prey 19, the weight ratio of the food enhancement to the total weight of the prey 19, the weight ratio of the rice husk 54 to the total weight of the food enhancement, and 55 to the total weight of the food enhancement Are the same as those of the system 10A of FIG.

After the excrement 18, the food residue 60, and the food-enhancement product (rice husk 54, okara 55) are stirred and mixed in the stirrer 12 to make the prey 19, the prey 19 is weighed in the quantitative cutting machine 13, and the set amount The prey 19 is discharged from the outlet. The prey 19 falls on a prey storage tray 20 positioned below the cutting machine 13 and is stored in a prey storage recess 57 of the storage tray 20 placed on the belt conveyor 14 (prey storage means). The prey 19 is leveled substantially flat according to the reference line 48 of the prey containing tray 20.

The prey storage tray 20 storing the prey 19 is moved to the lifter 15 by the belt conveyor 14. In the process in which the prey storage tray 20 moves on the belt conveyor 14, a predetermined amount of the house fly eggs 51 are inoculated on the surface of the prey 19 (egg inoculation means). The egg inoculation means inoculates a plurality of eggs 51 on the surface of the prey 19 and in the state of being spaced apart from the central part 35 of the bottom wall 33 in the horizontal direction at substantially equal intervals (see FIG. 7). The weight ratio of the egg 51 to the total weight of the prey 19 is the same as that of the system 10A of FIG.

After inoculating the eggs 51, the prey storage tray 20 is stacked in the vertical direction by the lifter 15 to form a rearing floor 16 having a hierarchical structure. A plurality of the breeding floors 16 are accommodated in the internal airtight space 23 of the breeding room 17 (supporting FIG. 2). The controller maintains the temperature of the internal airtight space 23 of the breeding room 17 at the set temperature via the air conditioner 24 while comparing the measured temperature output from the temperature sensor with the set temperature, and the measured temperature output from the humidity sensor. The humidity of the airtight space 23 is maintained at the set humidity via the air conditioner 24 while comparing the humidity with the set humidity. The temperature of the internal airtight space 23 of the breeding room 17 is maintained in the range of 27 to 31 ° C., and the humidity of the airtight space 23 is maintained in the range of 50 to 70%.

In the breeding process in which the prey 19 is fed to the larvae 50a to 50c and the larvae 50a to 50c are bred and the larvae 50a to 50c grow using the prey 19 as a prey, the prey 19 is enzymatically degraded in the larvae 50a to 50c. By excreting from the larvae 50a to 50c, the prey 19 (livestock excrement 18 and food residue 60) is changed to a fertilizer base material 52 of organic fertilizer (larva rearing means). The prey 19 left by the larvae 50a to 50c becomes a part of the fertilizer base material 52 by fermentation. In the larva breeding means, the 1st instar larva 50a is bred in the dark in the dark breeding room 17a, the 2nd instar larva 50b is bred in the dark or twilight in the dark or twilight breeding room 17b, and 3 in the bright breeding room 17c. The instar larvae 50c are bred in the lighting (assisted by FIG. 6).

The third-instar larvae 50c that have reached the stage of cocoon transformation are actively perturbed in search of a place to become a cocoon, and are guided to the lighting device 25 by the phototaxis while moving around the bottom wall 33 of the prey storage tray 20, The slopes 40 and 44 are scooped up from the central portion 35 of the wall 33 and moved from the central portion 35 toward the front end portions 39 and 43 of the front and rear portions 36 and 37. The third-instar larvae 50c enter the slopes 40, 44 between the convex parts 41, 45 formed at the tip portions 39, 43 of the front and rear parts 36, 37, and further scoop up the slopes 40, 44 to Overcoming the tip of 37, it falls toward the collection box 29 from the tip of the front and rear portions 36, 37 (FIGS. 11 and 12 are supported).

Since the third-instar larvae 50c that have reached the stage of metamorphosis fall to the collection box 29 from the tips of the front and rear portions 36, 37 of the prey storage tray 20, the larvae 50c, the fertilizer base material 52, Are separated (sorting means). In the system 10B, a group of third-instar larvae 50c separated from the fertilizer base material 52 is killed on the fourth day after inoculating the prey 19 with the eggs 51 (discarding means). In the killing means, the third-instar larvae 50c on the fourth day after inoculating the prey 19 with the eggs 51 are taken out of the collection box 29, and the larvae 50c are incinerated.

In the system 10B, 95 to 99%, preferably 97 to 98.5% of larvae out of the group of 3rd instar larvae 50c separated from the organic fertilizer 52 after the fifth day after inoculating the prey 19 with the eggs 51 50c is processed into feed (feed processing means), and the remaining 1 to 5%, preferably 1.5 to 3%, of larvae 50c are extracted, grown into adults, and grown from these adults 50c. Next-generation eggs 51 (recycling means).

In the feed processing means, these third-instar larvae 50c are treated with hot water, dehydrated and stored frozen. Alternatively, the larvae 50c are subjected to a hot water bath, dehydrated, dried, and stored at room temperature. Alternatively, these larvae 50c are subjected to a hot water treatment, then dehydrated, dried, powdered and stored at room temperature. The feed produced by the feed processing means is mixed in pet food or used as fish food or bird food.

In the recycling means, the humidity of the airtight space 23 is set to the set humidity (50 to 70%) while maintaining the temperature of the internal airtight space 23 of the breeding room 17 at the set temperature (27 to 31 ° C.) using the air conditioner 24. The remaining larvae 50c are transformed into cocoons. Next, the pupae are collected from the collection box 29, the pupae are transferred to a breeding gauge, and the pupae emerge as adults of the house fly. After emergence, the cocoon shells are collected from the breeding gauge. The next-generation eggs 51 are collected by feeding the house flies that emerged from the cocoon and breeding the house flies while spawning the house flies. The adult housefly carcasses are recovered from the rearing gauge. By inoculating the next-generation egg 51 into the prey 19, the larva 50 hatched from the egg 51 is treated with the excreta 18.

The fertilizer base material 52, cocoon husks, and adult housefly dead bodies produced by the larva breeding means are collected from the prey storage tray 20 and put into a dryer. The fertilizer base 52, the cocoon shell of the moth, and the adult housefly are stirred and mixed in a dryer for a predetermined temperature and for a predetermined time and dried to produce an organic fertilizer. The organic fertilizer is weighed and then packaged.

13 has the following effects in addition to the effects of the system 10A of FIG. In the system 10B, the food 19 includes the excrement 18 and the food residue 60, and the food 19 is processed by the housefly larva 50. The food residue 60 that is discarded in large quantities can be efficiently converted into the fertilizer base material 52 of organic fertilizer in a short time.

In addition, when incinerating the food residue 60, not only the fuel is consumed, but a large amount of carbon dioxide is discharged, which has an adverse effect on the environment. In this case, the system 10B emits malodor for a long time and may cause pathogenic bacteria. However, the prey 19 including the food residue 60 is enzymatically decomposed in the body of the larva 50 and excreted from the larva 50. Since the fertilizer base material 52 is made of organic fertilizer, there is no consumption of fuel when incinerated, it does not discharge carbon dioxide, it does not adversely affect the environment, There is no propagation of pathogenic bacteria, and the excreta 18 and the food residue 60 can be safely treated using the food habits of the housefly larva 50.

10A Organic fertilizer production system 10B Organic fertilizer production system 16 Rearing floor 17 Rearing room 18 Excrement 19 Prey 20 Prey storage tray (Prey storage container)
23 Internal airtight space 24 Air conditioner 25 Lighting device 29 Collection box 30 Fixed frame 33 Bottom wall 34 Both side walls 35 Center part 36 Front part 37 Rear part 50 Larva 50a 1st instar larva 50b 2nd instar larva 50c 3rd instar larva 51 Egg 52 Fertilizer base material 54 Rice husk (food enhancement product)
55 Okara (food enhancement product)

Claims (13)

1. In an organic fertilizer production system that produces organic fertilizer from livestock excreta using housefly larvae,
   The organic fertilizer production system includes a bait preparation means for mixing the excrement with a food enhancement product that enhances the food habits of the larvae, and a bait storage for storing a predetermined amount of the bait in a bait storage container of a predetermined volume Means, inoculating means for inoculating a plurality of the eggs of the housefly into the prey contained in the prey container, and feeding larvae hatched from the eggs to the prey contained in the prey container A larva breeding means for raising a larva and producing a fertilizer base material for the organic fertilizer by the enzymatic decomposition of the prey in the larva's body and excreting from the larva during the larva breeding process, and the cocoon metamorphosis stage has been reached An organic fertilizer production system, characterized in that it is implemented with a sorting means for sorting larvae and fertilizer bases using the active peristaltic discrete behavior of the larvae.
2. 2. The organic fertilizer according to claim 1, wherein the organic fertilizer manufacturing system implements a fertilizer preparation unit that mixes the dead body of the adult housefly and the shell of the house fly into the fertilizer base material to produce the organic fertilizer. Manufacturing system.
3. The organic fertilizer manufacturing system according to claim 1 or 2, wherein the egg inoculation means inoculates a plurality of eggs on the surface of the prey accommodated in the prey container.
4. The housefly larvae are classified into 1st instar larvae just after hatching, 2nd instar larvae after one molting, and 3rd instar larvae after 2 moltings before cocoon transformation. The organic fertilizer production system according to any one of claims 1 to 3, wherein the larvae are bred in the dark, the second-instar larvae are bred in the dark or twilight, and the third-instar larvae are bred in illumination.
5. Separation of the larvae and the organic fertilizer using the active peristaltic discrete behavior of the larvae starts on the 4th day and ends on the 7th day after inoculating the eggs into the prey, and the organic fertilizer production system However, on the 4th day after inoculating the prey with the egg, a killing means for killing the larva group separated from the fertilizer base material, and after the 5th day after inoculating the prey with the egg The organic fertilizer manufacturing system according to any one of claims 1 to 4, wherein a feed processing means for processing the larva group separated from the fertilizer base material into feed is implemented.
6. The next generation in which the organic fertilizer production system extracts some adults from the larvae group on and after the fifth day after inoculating the eggs into the prey, grows the extracted larvae into adults, and lays them on the adults The organic fertilizer manufacturing system according to claim 5, wherein a recycling means for inoculating the prey with the egg is used.
7. The larva rearing means is such that 65-90% of the prey is eaten by the larvae, 10-35% of the prey is fermented, and the prey is changed to the fertilizer base. 6. The organic fertilizer manufacturing system according to any one of 6.
8. 8. The organic fertilizer manufacturing system according to claim 1, wherein a plurality of the food storage containers are stacked in a vertical direction to form a breeding floor, and a plurality of the breeding floors are stored in a breeding room having a predetermined volume. Organic fertilizer production system.
9. 9. The organic fertilizer manufacturing system according to claim 8, wherein the temperature in the breeding room is maintained in a range of 27 to 30 ° C., and the humidity in the breeding room is maintained in a range of 50 to 70%. .
10. The weight ratio of the excreta to the total weight of the prey is in the range of 60 to 80% by weight, and the weight ratio of the food enhancement to the total weight of the prey is in the range of 20 to 40% by weight. The organic fertilizer manufacturing system according to any one of claims 1 to 9.
11. The food enhancement product is rice husk and okara, and the weight ratio of the rice husk to the total weight of the food enhancement product is in the range of 10 to 15% by weight. The organic fertilizer production system according to any one of claims 1 to 10, wherein the weight ratio of the fertilizer is in the range of 85 to 90% by weight.
12. The organic fertilizer manufacturing system according to any one of claims 1 to 11, wherein in the prey preparation means, a food residue is mixed into the excrement, and the food residue is spoiled in the excrement to produce the prey.
13. The organic fertilizer manufacturing system according to any one of claims 1 to 12, wherein the livestock is at least one of a pig and a chicken.

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