KR102823267B1 - Method and system for making animal feed from pig excrement - Google Patents

Abstract

A method for manufacturing animal feed using pig manure according to one embodiment of the present invention may include the steps of adding HOCL to pig manure collected from a pigsty and stirring it; the step of fermenting the stirred pig manure; and the step of drying the fermented pig manure. The step of stirring may further include: immersing a stirring member in the pig manure put into a storage means, determining an amount of HOCL to be injected corresponding to the amount of the pig manure put into the stirring tank, injecting the determined amount of HOCL into the storage means, and rotating the stirring member to stir the pig manure and the HOCL.

Description

{METHOD AND SYSTEM FOR MAKING ANIMAL FEED FROM PIG EXCREMENT}

The present invention relates to a method and system for manufacturing feed to be fed to animals using pig manure.

Since livestock farms produce a large amount of livestock waste, livestock farmers are making various efforts to deal with this waste.

Livestock waste is usually purified through a septic tank and then discharged into the river. However, if the purification capacity is insufficient, unpurified waste can cause environmental problems by polluting the river.

Therefore, methods of recycling livestock waste have been studied.

Meanwhile, the method of reusing livestock excrement as feed for the same livestock or other animals has been used for a long time. For example, in China and Southeast Asia, there is a method of feeding pig excrement to farmed fish. However, in this conventional method of feeding pig excrement (or feces) as is, ammonia and other toxic substances contained in pig excrement are directly fed into the farm, which has the problem of deteriorating the growth characteristics and meat quality of the fish.

In Korea, there are cases where technology for making feed using animal manure has been recognized as a patent. For example, Korean Patent No. 10-1402360 (May 26, 2014) (Title: Method for manufacturing poultry feed additive using cow manure) (hereinafter referred to as “prior art”) can be cited.

The above-mentioned prior art discloses a method for manufacturing poultry feed using cow manure, the method comprising the steps of collecting cow manure, placing the collected cow manure in a container and heating it, vibrating or striking the cow manure, which has been formed by removing moisture through the heating step, to break up entangled fibers, and crushing the broken fibers into a fine powder so that they can be easily consumed by poultry.

Meanwhile, according to the above-mentioned prior art, by heating cow manure through the heating step, malodorous components such as nitrogen and ammonia contained in the manure and bacteria are sterilized by the high temperature.

However, even with high-temperature heating, odor-causing components such as nitrogen and ammonia are not completely removed, and it cannot be said that not only bacteria but also toxic substances produced by bacteria are completely removed.

In addition, the above-mentioned prior art mentions that moisture and odor components contained in cow manure can be removed by natural drying and fermentation, etc. However, it is mentioned that such natural drying and fermentation methods are not to be utilized because they take a long time to remove moisture and odor, and it is difficult to completely sterilize bacteria contained in the manure, and there are also disadvantages such as discomfort and pollution of the surrounding environment due to the odor generated when the manure dries.

Therefore, there is a need for a method to supplement or replace the existing steps of deodorization, sterilization, disinfection, fermentation, and drying in making animal feed using livestock manure.

The present invention seeks to provide a method and system for manufacturing feed for livestock, fish, other animals, or insects by using livestock excrement collected from a livestock barn as a raw material.

In particular, the present invention aims to provide a method and system for manufacturing safe feed by effectively and completely removing odor components, bacteria, and toxic substances contained in raw feces and feed manufactured using feces.

In particular, the present invention aims to provide a method and system for producing high-protein feed using pig feces, which are characterized by a high protein content compared to feces of other livestock.

According to one embodiment of the present invention for achieving the above-described purpose, a method for manufacturing animal feed using pig manure may include the steps of adding HOCL to pig manure collected from a pigsty and stored in a storage means and stirring the same; the step of fermenting the stirred pig manure; and the step of drying the fermented pig manure.

Here, the stirring step may further include: immersing the stirring member in the pig manure put into the storage means, determining the amount of HOCL to be injected corresponding to the amount of the pig manure put into the storage means, injecting the determined amount of HOCL into the storage means, and rotating the stirring member to stir the pig manure and the HOCL, wherein the amount of HOCL to be injected may be determined to an extent that the concentration of available chlorine can be maintained at 100 ppm or more when mixed with the pig manure in the storage means.

Furthermore, between the stirring step and the fermenting step, the method may further include removing all residual chlorine in the stirred manure by operating the stirring unit for a predetermined period of time while the injection of HOCL is terminated.

In addition, the fermenting step may further include: adding a predetermined amount of fermentation microorganisms to the stirred pig manure, sealing the storage means, raising the temperature inside the storage means to create an anaerobic fermentation atmosphere inside the storage means, and maintaining the anaerobic fermentation atmosphere for 36 to 60 hours.

At this time, 1 to 10% of the weight of the stirred manure and 1 to 10% of the weight of the stirred manure can be additionally added as yellow soil.

In addition, the drying step may further include: placing the fermented manure into a cylinder, heating the cylinder to heat the manure placed inside, and simultaneously compressing the inside of the cylinder, thereby solidifying the manure while drying it.

In addition, the drying step may further include: irradiating the dried manure with ultraviolet (UV) rays for sterilization, and spraying HOCL onto the dried manure.

According to another embodiment of the present invention for achieving the above-described object, a system for manufacturing animal feed using pig manure is provided, which includes: a stirring device for adding HOCL to pig manure collected from a pigsty and stirring it; a fermentation device for fermenting the stirred pig manure; and a drying device for drying the fermented pig manure; and an integrated control means for controlling the operations of the stirring device, the fermentation device, and the drying device.

Here, the stirring device may further include: a stirring tank in which the collected pig manure is stored; a stirring unit that rotates inside the stirring tank to stir the pig manure and HOCL; a driving unit that rotates the stirring unit; a HOCL supply unit that supplies HOCL to be injected into the collected pig manure; and a discharge unit configured to discharge HOCL supplied from the HOCL supply unit into the inside of the stirring tank. At this time, the integrated control means may operate the driving unit to rotate the stirring unit immersed inside the collected pig manure in the stirring tank, determine the amount of HOCL to be injected corresponding to the amount of the pig manure injected into the stirring tank, and control the HOCL supply unit so that the determined amount of HOCL is injected. In particular, the amount of the injected HOCL may be determined to an extent that the concentration of effective chlorine can be maintained at 100 ppm or more when mixed with the pig manure in the stirring tank.

In addition, the fermentation device may further include: a fermentation tank for receiving and storing pig manure for which HOCL injection and stirring operations have been completed in the stirring device; a material addition unit for adding fermentation microorganisms to the pig manure in the fermentation tank; a cover unit for sealing the fermentation tank; and a fermentation tank heating unit for increasing the temperature inside the fermentation tank. At this time, the integrated control means: controls the input amount of the fermentation microorganisms to be input into the fermentation tank and the heating amount of the fermentation tank heating unit in response to the weight of the pig manure stored in the fermentation tank, and can maintain the inside of the fermentation tank as an anaerobic fermentation atmosphere for 36 to 60 hours.

Additionally, the auxiliary material addition unit may be configured to add: 1 to 10% of the weight of the stirred pig manure, yellow soil, and 1 to 10% of the weight of the stirred pig manure, rice husk.

In addition, the drying device may further include: a cylinder into which the fermented pig manure is introduced; a cylinder heating unit for heating the cylinder; and a piston for compressing the fermented pig manure introduced into the cylinder, wherein the integrated control means may control the amount of the fermented pig manure introduced into the cylinder, the heating operation of the cylinder heating unit, and the compressing operation of the piston in order to dry and solidify the introduced pig manure simultaneously.

In addition, the drying device may further include: an ultraviolet irradiation unit for irradiating the dried pig manure with ultraviolet (UV) rays for sterilization; and an HOCL spray unit configured to spray HOCL onto the dried pig manure.

According to the method and system for producing animal feed using pig manure according to the present invention including the above-described composition, it is possible to produce high-protein feed for animals and/or insects using pig manure generated in a pigsty.

In particular, according to the present invention, by applying HOCL, which exhibits a strong deodorizing/sterilizing/disinfecting effect, to pig manure, which is a raw material of feed, at an optimal dosage at at least one stage during the feed manufacturing process, it is possible to manufacture safe feed using raw materials from which odorous components have been removed and from which sterilization and disinfection have been completed. Furthermore, by repeatedly applying HOCL during the feed manufacturing process, it is possible to perfectly ensure the removal of odorous components and the sterilizing and disinfecting effects, and to maximally suppress the manufactured feed from spoilage or deterioration during storage and transportation.

In addition, according to the present invention, by adding rice husk and yellow soil to the manure, the fermentation efficiency can be increased, the nutritional components of the feed can be increased, and the detoxification performance of toxic components in the feed can be improved.

FIG. 1 is a flow chart illustrating steps of a method for manufacturing animal feed using manure according to one embodiment of the present invention.
FIG. 2 is a block diagram schematically illustrating the configuration of a system for manufacturing animal feed using manure according to another embodiment of the present invention.
Figure 3 is a drawing for explaining the functions of each device of the above system.

Hereinafter, with reference to the attached drawings, a preferred embodiment of a method for manufacturing animal feed using pig manure according to the present invention and a system for manufacturing animal feed using pig manure will be described. For reference, the terms referring to each component of the present invention are named illustratively in consideration of their functions, and therefore, the technical content of the present invention should not be predicted or limited by the terms themselves.

Furthermore, since the various embodiments of the present invention to be described below are only intended to exemplify the technical idea of the present invention, the protection scope of the present invention should be interpreted by the appended claims. In addition, since those skilled in the art to which the present invention pertains can design various modifications and variations without departing from the essential characteristics of the present invention, the scope of the rights of the present invention should be interpreted to include all technical ideas within the scope equivalent to the present invention.

First, referring to the flow chart of Fig. 1, the steps of a method for manufacturing animal feed using manure according to one embodiment of the present invention will be described. The method may largely include a stirring step (S10) → a fermentation step (S20) → a drying step (S30).

The excrement can be collected from the pigsty. The pigsty can be formed, for example, with a structure in which a predetermined manure discharge outlet is provided on the floor of the space where the pigs are housed. Alternatively, the floor of the space where the pigs are housed can be formed with a mesh structure so that the discharged excrement passes through the mesh and falls directly downward. A transport means, such as a conveyor belt, can be arranged at the bottom of the manure discharge outlet or the mesh structure. The excrement and urine discharged from the pigs are collected in the transport means through the discharge outlet or the mesh, and the transport means transports the excrement and urine to a predetermined storage means (e.g., a storage tank).

For reference, cow manure (cow dung) and chicken manure (chicken dung) have high viscosity and tend to stick to the conveying medium. Therefore, in order to convey cow manure or chicken manure using a conveyor belt, additional additives such as washing water or a solvent must be added to the cow manure or chicken manure.

However, the general pig manure has low viscosity, low adhesiveness, and is easy to crumble. Therefore, pig manure can easily pass through the mesh structure without the addition of separate washing water or additives, and can be easily transported through a transport means such as a conveyor belt.

Therefore, in the method and system for manufacturing animal feed using pig manure according to the present invention, it is based on not using washing water or additives when collecting pig manure. Of course, a minimum amount of washing water may be applied if necessary. Alternatively, HOCL may be sprayed or added to the pig manure when collecting the pig manure. Since HOCL is mostly composed of water, it can provide washing functions and viscosity-reducing functions.

In the present invention, “pig manure” and “pig feces” are used as concepts including pig feces and urine without separate washing water or additives.

Manure transported by a transport means and/or manure collected and transported from a pigsty through a separate operation are input into the stirring step (S10).

In the stirring step (S10), the manure is placed in a predetermined storage means (e.g., a stirring tank), a stirring member is inserted and immersed inside the manure, and the manure is stirred by rotating the stirring member.

At this time, a predetermined amount of HOCL can be injected into the mixing tank.

In the present invention, "HOCL" means "slightly acidic hypochlorous acid water". The molecular formula of slightly acidic hypochlorous acid water is HOCl, and therefore, in the present invention, HOCL can be used interchangeably with HOCl. HOCL has a deodorizing/sterilizing power that is 80 times stronger than NaOCl, commonly called "bleach", while having a shorter sterilizing time and is a safe substance for the human body. In particular, HOCL is harmless to the environment because it leaves no residue after sterilizing and is converted to water after time passes.

In the present invention, HOCL manufactured from a separately provided HOCL manufacturing device can be supplied, and the supplied HOCL is injected into a mixing tank so that the HOCL can be mixed with the pig manure (S10).

It is desirable that the amount of HOCL injected into the mixing tank be determined so that the concentration of available chlorine in the stirred pig manure in the mixing tank can be maintained at least 100 ppm.

For this purpose, the HOCL used in the present invention may have an effective chlorine concentration of at least 100 ppm or more, particularly, in the range of 150 to 200 ppm.

Meanwhile, the amount of HOCL injected into the mixing tank may be calculated based on the volume of the manure injected into the mixing tank, or may be calculated based on the weight of the manure injected into the mixing tank. Alternatively, the rotational resistance that appears when the mixing unit rotates inside the manure may be measured, and the amount of manure injected into the mixing tank may be predicted based on the viscosity of the manure calculated by the rotational resistance, and the amount of HOCL to be injected into the manure may be calculated based on the predicted amount.

Meanwhile, since the pig manure put into the mixing tank in the present invention is in a state in which no separate washing water or additives are added, the amount of HOCL put in is not large compared to the case in which livestock manure collected using washing water is used, and also, it is easy to calculate or predict the concentration of available chlorine in the pig manure.

Additionally, the stirring time after HOCL injection can be controlled based on the amount of slurry introduced into the stirring tank.

In a further embodiment, the HOCL may be applied after being heated to, for example, about 30 to 45° C. In addition, it is also possible to add a heating means to the stirring tank to heat the stirred slurry to about 30 to 45° C.

By stirring the manure in a mixing tank with an effective chlorine concentration of 100 ppm or higher, the foul-smelling components, bacteria, and toxic substances in the manure are removed. The fermentation step (S20) is performed on the manure that has been stirred in this manner.

In a further embodiment, after the injection of HOCL is completed, the residual chlorine inside the pig manure can be extinguished by maintaining stirring for a predetermined period of time. This is to eliminate the side effect of the residual chlorine of HOCL sterilizing even microorganisms to be introduced in the fermentation step (S20) to be performed later.

After HOCL is injected in the stirring step (S10), the manure that has been stirred is put into a storage means (e.g., a fermentation tank of a fermentation device) (S20). Meanwhile, microorganisms for fermentation can be added into the fermentation tank. Since all microorganisms inside the manure have been sterilized in the previous stirring step, the addition of microorganisms for fermentation is essential.

Additional microorganisms may include, for example, lactic acid bacteria species.

In additional embodiments, loess and/or rice husk may be introduced into the fermenter.

Yellow soil has the effect of absorbing toxic components in pig manure. Yellow soil can be added at a ratio of 1 to 10% based on the weight or volume of pig manure that has gone through the stirring stage. Rice husk has the effect of improving the fermentation efficiency of pig manure and supplementing the nutritional components of feed made from pig manure. Rice husk can be added at a ratio of 1 to 10% based on the weight or volume of pig manure that has gone through the stirring stage.

The yellow soil and rice husk may be introduced all at once at a specific point in the fermentation step (S20), or may be introduced in multiple installments during the fermentation step (S20). In addition, in the fermentation step (S20), a process of stirring the pig manure may be added after the yellow soil and/or rice husk are introduced.

Meanwhile, the inside of the fermenter can be maintained as an anaerobic atmosphere by covering the fermenter and changing to a sealed state. In addition, the inside of the fermenter can be heated to about 30 to 45°C by heating the surface of the fermenter or inserting a heating means into the inside of the pig manure contained in the fermenter. As a result, the inside of the fermenter forms an anaerobic fermentation atmosphere.

The fermentation step (S20) can be maintained for 36 to 60 hours, and preferably for 48 hours.

After the fermentation process of about 48 hours, the pig manure is put into the drying stage to remove moisture and fix the shape (S30).

The drying step (S30) includes putting a certain amount of manure into a cylinder structure, heating the cylinder structure at a high temperature of, for example, 100 to 200°C, preferably 120°C, to evaporate moisture in the manure, and compressing the inside of the cylinder with a piston to produce compressed and solidified manure.

After drying, the solidified powder will be formed into a shape corresponding to the internal shape of the cylinder or the shape of the outlet of the cylinder. Typically, the cylinder structure can be an elongated cylinder, so that the powder can be solidified into a cylindrical rod shape.

In a further embodiment, additional sterilization/disinfection effects may be achieved by irradiating the solidified manure in a rod shape with ultraviolet (UV) light or spraying HOCL. That is, the manure manufactured in a rod shape may be temporarily stored and then transported to where it is actually needed, and may be sterilized/disinfected periodically using UV and/or HOCL to minimize microbial growth and deterioration during storage or transport.

In another embodiment, a method for manufacturing animal feed using manure according to the present invention may be performed in the following order: stirring step → drying step → grinding step → fermentation step → disinfection step.

The stirring step can be performed in the same manner as in the above-described embodiment. That is, by stirring the collected manure while injecting HOCL, the malodorous components, bacteria, and toxic substances in the manure can be removed.

The manure from which the stirring is completed and the odor components, etc. have been removed can be dried through a drying step. Drying can be done by directly heating the stirring tank, or by transferring the manure to a separate storage tank and heating the storage tank, or by supplying hot air into the inside of the storage tank.

Dried manure can be in a solid state where moisture is removed and the manure has hardened to a certain degree. Therefore, manure that has gone through the drying step can be put into the grinding step and finely ground into powder of a predetermined size or less.

The crushed pig manure can be put into the fermentation stage. In the fermentation stage, fermentation microorganisms (e.g., lactic acid bacteria) can be added to the crushed pig manure. In this fermentation stage, an environment in which the microorganisms can grow can be created by adding a certain amount of water to the dried pig manure. In addition, the quality of the feed can be improved by adding yellow soil and/or rice husk.

The fermented pig manure can be commercialized as is, but may undergo an additional drying step or disinfection step. That is, the fermented pig manure has been added with fermentation microorganisms and/or water, and since the fermentation microorganisms and other bacteria have multiplied in large quantities, the pig manure may rot or its components may change while being stored for feeding or while being transported to where it is actually needed. Therefore, in order to remove such microorganisms and bacteria, the fermented pig manure may be dried, or a disinfection step may be added by irradiating it with ultraviolet rays or spraying HOCL.

The manure that has gone through the sterilization step may be in a powder state that has been pulverized in the previous pulverization step. If necessary, the manure may be formed into a desired shape, for example, a cylindrical rod shape or a pellet shape, by putting it into a cylinder structure as described above and pressing it.

Next, referring to FIGS. 2 and 3, the configuration of a system for manufacturing animal feed using manure according to another embodiment of the present invention will be described. Referring to the drawings, the system includes a stirring device (110), a fermentation device (120), a drying device (130), and an integrated control means (150).

The stirring device (110) may be equipped with a stirring tank (111), a stirring unit (112), a driving unit (114), a HOCL supply unit (118), and a discharge unit (116).

The mixing tank (111) is a storage means for storing manure collected and transported from the pigsty. The mixing tank (111) may be equipped with a means for measuring the amount of manure stored (not shown). The measuring means may include, for example, a sensor capable of measuring the height of the manure filled inside the mixing tank (111), a sensor capable of measuring the weight of the mixing tank (111), etc.

In the stirring tank (111), a stirring unit (112) may be arranged. The stirring unit (112) may include, for example, a propeller-type rotating member. The stirring unit (112) may be rotated by the driving force of the driving unit (114). The operation of the driving unit (114) may be controlled by the integrated control means (150). That is, the start/end of rotation, rotation speed, etc. of the driving unit (114) may be controlled. Meanwhile, the driving unit (114) may also be implemented to measure the rotational resistance of the stirring unit (112).

The HOCL supply unit (118) may include a device for directly producing HOCL by electrolyzing water, and may also include a storage means for temporarily storing HOCL supplied from the HOCL production unit. The HOCL supply unit (118) may supply a set amount of HOCL to the discharge unit (116) under the control of the integrated control means (150).

The HOCL supply unit (118) can manufacture or supply high-concentration HOCL having an effective chlorine concentration of at least 100 ppm or more, particularly, in the range of 150 to 200 ppm.

The discharge unit (116) is configured to discharge HOCL provided from the HOCL supply unit (118). The discharge unit (116) may be configured to be located at the upper side of the stirring tank (111) and to flow HOCL into the upper side of the stored manure. However, it is preferable that the discharge unit (116) be configured to be located near the rotating member of the stirring unit (112) so that HOCL is directly injected into the inside of the manure. In FIG. 3, as an exemplary configuration, the discharge unit (116) is schematically shown as being formed at the end of the rotating member.

Meanwhile, the integrated control means (150) can check the amount of manure stored in the mixing tank (111) and determine the amount of HOCL to be injected. At this time, the amount of HOCL to be injected can be determined to an extent that the HOCL injected into the mixing tank (111) can exhibit an effective chlorine concentration of 100 ppm or more when mixed with the manure.

The concentration of available chlorine in the manure in which HOCL is mixed and stirred can be measured using a separate chlorine concentration measuring sensor, but a method can also be used in which the amount of HOCL to be injected per unit amount of manure is determined in advance under laboratory conditions and the amount of HOCL corresponding to the amount of manure actually measured from the stirring tank (111) is calculated and determined.

When HOCL is injected into the manure and sufficiently stirred to remove foul-smelling substances, bacteria, and toxic substances in the manure, the stirred manure is transported to a fermentation device (120). The fermentation device (120) may be equipped with a fermentation tank (121), a cover part (122), a fermentation tank heating part (126), and an auxiliary material addition part (124).

The fermentation tank (121) is a storage means in which the manure transported from the stirring device (110) is stored. In a modified example, the fermentation tank (121) may utilize the stirring tank (111) as is, but it would be preferable for it to be a separate storage tank.

The cover part (122) is intended to seal the fermentation tank (121) from the external environment, and may also include a cover-shaped member and a pipe and valve structure for injecting manure into the fermentation tank (121). The sealing here may include not only sealing to the extent of completely blocking the fermentation tank (121) from the outside, but also controlling the amount of ventilation so as to maximize the fermentation characteristics by microorganisms.

The auxiliary material addition unit (124) is controlled by an integrated control means (150) and injects microorganisms necessary for fermentation into the pig manure stored in the fermentation tank (121). It is preferable that the microorganisms used for fermentation are lactic acid bacteria.

Additionally, the auxiliary material addition unit (124) may be configured to add yellow soil and/or rice husk to the pig manure stored in the fermentation tank (121).

The amount of added lactic acid bacteria, yellow soil, rice husk, etc. can be determined based on the amount of pig manure put into the fermentation tank (121). Meanwhile, the amount of pig manure put into the fermentation tank (121) can be referenced to the amount of pig manure measured in the stirring device (110).

In particular, the amount of yellow soil and/or rice husk introduced into the fermentation tank (121) can be determined in the range of 1 to 10% of the weight (or volume) of the pig manure.

*The fermentation tank heating unit (126) is controlled by an integrated control means (150) and can be configured to heat the outside of the fermentation tank (121) or to directly heat the manure by being immersed in the manure inside the fermentation tank (121).

In this structure, the integrated control means (150) puts manure into the fermentation tank (121), adds corresponding microorganisms, yellow soil, and rice husk, covers the tank to seal the inside of the fermentation tank, and operates the fermentation tank heating unit (126) to create an optimal anaerobic fermentation atmosphere inside the fermentation tank, and maintains this atmosphere for 36 to 60 hours, preferably 48 hours, thereby allowing undigested substances in the manure to be decomposed.

In the fermentation stage, the integrated control means (150) can quickly achieve maximum fermentation by changing the fermentation temperature and sealing conditions to optimal conditions over time.

Meanwhile, when adding auxiliary materials to the fermentation tank (121), the auxiliary materials can be sprayed onto the pig manure being added when putting the pig manure into the fermentation tank (121), so that the pig manure and auxiliary materials are automatically mixed at the same time as they are put in. Alternatively, the pig manure and auxiliary materials can be physically mixed using an additional stirring means.

The pig manure that has gone through a fermentation stage for a predetermined period of time is in a state where the foul odor is removed and harmful bacteria and toxic substances are removed, but fermented lactic acid bacteria have multiplied. The pig manure in this state is provided to a drying device (130) that dries the pig manure by high-temperature heating, kills all remaining bacteria, and presses and forms the dried pig manure into an arbitrary shape.

The drying device (130) may be equipped with a cylinder (131), a cylinder heating unit (134), and a piston (132).

The fermented pig manure can be fed into the cylinder (131) in predetermined amounts.

The cylinder heating unit (134) heats the cylinder (131) to heat the manure put into the cylinder (131). The cylinder heating unit (134) heats the manure in the cylinder (131) or inside the cylinder to a high temperature of about 100 to 200°C, preferably 120°C.

Meanwhile, one or more microscopic holes may be formed in the cylinder (131) so that water vapor generated by evaporation from the heated money at a high temperature can be discharged outside the cylinder.

The piston (132) compresses the powder that is heated and dried inside the cylinder. As the piston (132) compresses the powder, the powder is formed and solidified into the shape inside the cylinder (131).

The heating operation of the cylinder heating unit (134) and the compression operation of the piston (132) can be controlled by the integrated control means (150).

Meanwhile, in an additional embodiment, a spraying means for spraying HOCL on the pig manure that has completed fermentation in the fermentation device (120) may be provided. By the HOCL sprayed by this spraying means, the odorous substance generated in the fermentation stage is removed once again, thereby preventing the odor generated when moisture evaporates in the subsequent heating stage and the odor generated from the solidified pig manure.

Meanwhile, a system for manufacturing animal feed using manure according to the present invention may further include an ultraviolet irradiation unit (137) for irradiating ultraviolet rays to solidified manure and a HOCL spraying unit (138) for spraying HOCL.

The finished dried and solidified manure can be, for example, a long cylindrical rod. If this rod-shaped manure is transported by a roller-type transport means, the rod-shaped manure can be transported while rotating. If ultraviolet rays are irradiated here and HOCL is sprayed, the ultraviolet rays and HOCL can reach the circumference of the rod-shaped manure evenly.

The pellets will be transported to where they are actually needed after being temporarily stored. By treating the surface with ultraviolet rays and HOCL, microbial growth during storage or transport can be minimized, thereby inhibiting spoilage.

Claims (13)

A stirring device for adding HOCl (slightly acidic hypochlorous acid) to pig manure collected from a pigsty and stirring it:
A stirring tank in which the collected money is stored;
A stirring unit that rotates inside the stirring tank to stir the powder and HOCl;
A driving unit that rotates the above stirring unit;
A HOCl supply unit for supplying HOCl to be mixed with the above-mentioned money powder; and
A stirring device including a discharge unit configured to discharge HOCl supplied from a HOCl supply unit into the interior of the stirring tank;

A fermentation device for fermenting stirred manure:
A fermentation tank for receiving and storing the manure after the stirring operation with HOCl is completed in the above stirring device;
A material addition unit for adding yellow soil, rice husk and fermentation microorganisms to the pig manure inside the fermentation tank;
A cover for sealing the above fermentation tank; and
A fermentation device including a fermentation tank heating unit for raising and maintaining the temperature inside the fermentation tank;

A drying device for drying fermented pig manure:
A cylinder configured to receive the fermented pig manure in the fermentation device, and having one or more microscopic holes formed therein to discharge steam generated inside to the outside, and configured to form the pig manure that is compressed and pushed out to the outside into a cylindrical shape;
A cylinder heating unit for heating the powder inside the cylinder to a temperature of 100 to 200°C;
A piston that compresses the powder introduced into the cylinder and pushes it out of the cylinder, thereby causing the powder to be heated and dried inside the cylinder and formed into a cylindrical rod shape and solidified;
In the above money molded into a cylindrical shape, an ultraviolet irradiation section for irradiating ultraviolet (UV) rays for sterilization; and
A drying device including a HOCl spraying unit configured to spray HOCl onto the money powder formed into a cylindrical shape; and

As an integrated control means for controlling the operations of the above stirring device, the above fermentation device, and the above drying device:
The amount of HOCl to be injected corresponding to the amount of the pig manure stored in the stirring tank is determined so that the concentration of effective chlorine can be maintained at 100 ppm or more when mixed with the pig manure in the stirring tank, the HOCl supply unit is controlled to supply the determined amount of HOCl, and the driving unit is operated to rotate the stirring unit immersed in the pig manure inside the stirring tank.
The operation of the auxiliary material adding unit is controlled to add 1 to 10% of the weight of the pig manure and 1 to 10% of the rice husk to the pig manure stored in the fermentation tank after stirring by the stirring device, and to add a predetermined amount of fermentation microorganism.
The heating amount of the fermentation tank heating unit is controlled so as to maintain the inside of the fermentation tank at a predetermined temperature for maintaining an anaerobic fermentation atmosphere for 36 to 60 hours,
Controlling the amount of the pig manure fermented by the fermentation device fed into the cylinder, controlling the heating operation of the cylinder heating unit to dry the pig manure, and controlling the pressing operation of the piston to push out the dried pig manure so that it is formed into a cylindrical rod shape and solidified, and
A system for manufacturing animal feed using pig manure, comprising an integrated control means for controlling the operations of the ultraviolet irradiation unit and the HOCl spray unit to sterilize the formed pig manure.
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