KR20160097551A - A manufacturing apparatus for organic ferilizer and fermentation liquefied fertilizer using food garbage and sludge in sewage and a manufacturing method thereof - Google Patents

Abstract

The present invention relates to a device for producing an organic fertilizer and a fermented liquid fertilizer, and to a method for producing an organic fertilizer and a fermented liquid fertilizer by using the same. In particular, the present invention relates to a technique of preventing secondary contamination caused by effluent generated when food waste is treated, and capable of producing a good quality organic fertilizer having salt removed therefrom and a fermented liquid fertilizer. The device according to the present invention comprises: a food storing unit for feeding and storing collected foods; a food processing and treating unit connected with the storing unit, sorting and removing foreign materials from foods transferred from the food storing unit, and pulverizing and dehydrating the foods; a liquid fertilizer producing unit connected with the food processing and treating unit, and producing a liquid fertilizer by receiving effluent obtained from a dehydration procedure and by fermenting the effluent; a fertilizer fermenting unit connected with the food processing and treating unit, receiving and storing pulverized and dehydrated food lumps, and producing an organic fertilizer by fermenting the food lumps by using sewage sludge and a diluting agent; and a fertilizer aging unit connected with the fertilizer fermenting unit, and aging a fertilizer obtained from the fertilizer fermenting unit.

Description

TECHNICAL FIELD The present invention relates to an apparatus for producing organic fertilizer and fermented liquid fertilizer using food waste and sewage sludge, and a method for manufacturing organic fertilizer and fermented liquid fertilizer using the same,

The present invention relates to an organic fertilizer and an apparatus for producing a fermented liquid fertilizer, and an organic fertilizer and a fermented liquid fertilizer using the same. More particularly, the present invention relates to a method for producing organic fertilizer and fermented liquid fertilizer, The present invention relates to a technology capable of producing a high quality organic fertilizer and a fermented liquid fertilizer which have been removed.

Recently, various kinds of wastes generated in industrialization and life processes are very diverse. Environmental pollution of air, water and soil caused by various wastes becomes worse day by day, and various wastes are treated, recycled, Reduction techniques and pollution prevention technologies and policies as well as solutions for the purification of polluted air, water and soil have been proposed.

Especially, the problem of disposal of food waste is very serious in Korea. Until 2013, most of the food waste was disposed of by marine dumping. However, since the marine dumping was prohibited by the 2009 London Convention, some of them are currently being recycled as feedstuffs. Most of them are fermented and recycled as fertilizer (organic fertilizer) Not only are farmers reluctant to use them, but their throughput is much lower than their yields due to fermentation time.

Therefore, the government is implementing various policies such as food waste disposal for the reduction and treatment of food waste, and commercialization of new and renewable energy to produce biogas using food waste.

Accordingly, the present invention aims at reducing the amount of food waste and increasing the fermentation rate, so that a large amount of food waste can be easily treated to develop a high quality organic fertilizer and liquid fertilizer with little salinity.

Currently, many researchers are conducting extensive research on the recycling of food waste, and various technologies have been patented.

For example, according to Patent Registration No. (10-0311987), the pulverized food waste is fed into a concentrating tank or an anaerobic digestion tank of the sludge treatment process at the sewage treatment plant and merged, or according to Patent Registration No. (10-0215585) The sludge among the garbage is treated as fertilizer, and the waste water is purified by the waste water purification device and discharged.

However, the conventional technology has a problem in that it is difficult to recycle due to problems of secondary pollution and residual salinity which are generated in the process of recycling as well as the throughput of the food waste is low compared to the amount of discharged water due to slow fermentation rate and negative waste water have.

SUMMARY OF THE INVENTION The present invention has been made to overcome the above problems, and it is an object of the present invention to provide a method for producing a high quality organic fertilizer and a fermentation broth without salting, which can treat food waste in a large amount.

It is another object of the present invention to provide a method of treating garbage that can increase the fermentation speed of food waste and remove odors by activating organic matter components and fermentation microorganisms contained in sewage sludge using sewage sludge.

In addition, the present invention produces fertilizers suitable for the respective characteristics by using two products that are produced by dewatering food wastes, that is, the food wastes that have been dehydrated, and the wastewater generated by dehydration, There is another purpose of preventing pollution and, more importantly, of promoting desirable resource recycling.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, A food processing unit connected to the storage unit for selectively removing foreign substances from the food transferred from the food storage unit and then crushing and dehydrating the food; A liquid fertilizer manufacturing unit connected to the food processing unit to receive negative wastewater from the dewatering process to ferment the wastewater to produce a liquid fertilizer; A fertilizer fermentation unit connected to the food processing unit to receive and store the crushed and dehydrated food chunks, and fermenting the food mass using the sewage sludge and the eutrophic raw material to produce an organic fertilizer; And a fertilizer aging part connected to the fertilizer fermentation part to agitate the fertilizer coming from the fertilizer fermentation part. The present invention also provides an apparatus for producing organic fertilizer and fermented liquid fertilizer.

Further, the present invention provides a method for producing a food, comprising: providing a food; Removing foreign matter contained in the food; Pulverizing and dehydrating the food material from which the foreign substances have been removed to produce food sludge; Mixing the food sludge with sewage sludge and an eutectic to produce an organic fertilizer; Aging the prepared organic fertilizer by transferring the organic fertilizer to a separate space; And a step of adding a microorganism to the dehydrated wastewater dehydrated from the food and heating the mixture to prepare a liquid fertilizer. The present invention also provides a method for producing an organic fertilizer and a fermented liquid fertilizer.

According to the present invention, organic fertilizer and fermented liquid fertilizer can be simultaneously produced using food waste.

When organic fertilizer is manufactured using food waste, it is difficult to use it for agricultural land due to its high salt concentration. However, the present invention has an advantage in that it can remove the salt and increase the use area.

On the other hand, by using activated sewage sludge by microorganisms, odor can be reduced or eliminated when organic fertilizer is produced, and the fermentation rate can be increased by using an eugenic agent such as coco peat or sawdust together with sewage sludge.

In the fermentation process of organic fertilizer, air and moisture can be selectively supplied to increase the fermentation rate and organic content, and the mixing state can be improved by using a rotary type stirrer.

In addition, the quality of the organic fertilizer can be improved by providing a separate aging portion of the fertilizer which can be aged while the organic fertilizer is fermented.

In the case of waste wastewater which has been abandoned in the past and has caused secondary environmental pollution, it is used as fermented liquid fertilizer by lowering the salt concentration through the reaction with the microorganism and heating process, thereby preventing secondary contamination and recycling waste resources It can provide the opportunity to be.

1 is a plan view showing the entire structure of an apparatus for producing organic fertilizer and fermented liquid fertilizer according to the present invention
FIG. 2 is a plan view and a side view of a food storage unit constituting an organic fertilizer and a fermented liquid fertilizer manufacturing apparatus according to the present invention.
3 is a partial side cross-sectional view of a food processing unit constituting an organic fertilizer and fermented liquid fertilizer manufacturing apparatus according to the present invention.
FIG. 4 is a plan view of a liquid fertilizer producing unit constituting an apparatus for producing organic fertilizer and fermented liquid fertilizer according to the present invention.
FIG. 5 is a view of an organic fertilizer manufacturing unit constituting an apparatus for producing organic fertilizer and fermented liquid fertilizer according to the present invention.
6 is a flow chart showing a process for producing an organic fertilizer and a fermented liquid fertilizer using the apparatus for producing organic fertilizer and fermented liquid fertilizer according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings.

However, it is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is intended that the disclosure of the present invention be limited only by the terms of the appended claims.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention.

In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprises "and / or" comprising "used in the specification do not exclude the presence or addition of components other than the components mentioned.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the apparatus for producing organic fertilizer and fermented liquid fertilizer according to the present invention comprises a food storage unit 100 for storing and storing collected food waste, a food storage unit 100 connected to the food storage unit 100, And a food processing unit 200 for selectively removing foreign substances from the food transferred from the food processing unit 100 and then crushing and dehydrating the food.

The liquid fertilizer producing unit 300 connected to the food processing unit 200 and receiving the negative wastewater from the dewatering process to produce the liquid fertilizer by fermenting the negative wastewater and the food processing unit 300, A fertilizer fermentation unit 400 for receiving and storing a lump of food, fermenting a lump of food by using sewage sludge and an eutectic material to produce an organic fertilizer, a fermentation unit 400 connected to the fertilizer fermentation unit 400, And a fertilizer aging unit 500 for aging the fertilizer.

The food storage part 100 is provided in a large barrel shape, and a first conveying part composed of several stages of conveying screws is disposed between the food storage part 100 and the food processing part 200 (610).

The food processing unit 200 is provided next to the food storage unit 100.

The food processing unit 200 receives the food transferred from the food storage unit 100 and selects a foreign substance (e.g., a metal substance, a waste vinyl, or the like) contained in the food.

The food material from which the foreign substance is removed is finely crushed in the food processing processing unit 200. Here, it is preferable that the food be finely ground to a particle diameter of 1 to 2 mm.

The pulverized food is subjected to a transfer process and a dehydration process.

The dehydrated food becomes a state of food sludge because of lack of water.

And, in the process of dehydration of water, the salinity included in the moisture also goes out considerably.

The dehydrated food sludge is transferred to the fermentation fermentation unit 400 and a second transfer unit 620 is provided between the fermentation fermentation unit 400 and the food processing unit 200. The second transfer unit 620 is composed of a housing and a transfer screw.

The fertilizer fermentation unit 400 may be supplied with sewage sludge and secondary sludge.

To this end, a sewage sludge supply unit 700 and an auxiliary supply unit 800 are provided.

Sewage sludge is completed by fermenting or activating sewage sludge collected from a sewage treatment plant using microorganisms.

A third transfer unit 630 is provided between the sewage sludge supply unit 700 and the fertilizer fermentation unit 400. Sewage sludge in the sewage sludge supply unit 700 is supplied to the fertilizer fermentation unit by the third transfer unit 630.

The third transfer unit 630 may also be constituted by a housing serving as a transfer path and a transfer screw.

The eutrophic feeder 800 supplies an effervescent agent to facilitate the fermentation of organic fertilizer such as coco peat or sawdust. A fourth feeder 640 is provided between the eutrophic feeder 800 and the fertilizer fermenter 400 do.

The fourth transfer unit 640 may also be constituted by a housing serving as a transfer passage and a transfer screw.

The fourth feeder 640 feeds the fertilizer fermentation unit 400 with an eutrophic material such as sawdust or coco pits of the eutrophic feeder 800.

The fertilizer fermentation unit 400 mixes the dehydrated food sludge, the activated sludge from the microorganism, and the eugenic agent, and fermentes the organic fertilizer to produce an organic fertilizer.

A fertilizer aging unit 500 is provided beside the fertilizer fermentation unit 400.

The fertilizer aging unit 500 is a device for aging the organic fertilizer completed by the fertilizer fermentation unit 400. The agriculture unit housing 510 houses the fermented organic fertilizer and a stirring part 520).

Here, the agitating part 520 is preferably implemented as a screw type agitating device rotating inside the aging part housing 510.

On the other hand, a liquid fertilizer producing unit 300 is provided beside the food processing unit 200.

The liquid fertilizer manufacturing section 300 is a part for producing liquid fertilizer using the waste water from the process of dewatering food in the food processing section 200.

The liquid fertilizer manufacturing unit 300 includes a negative wastewater storage tank 310 for storing negative wastewater, a reactor 320 for reacting and heating the negative wastewater from the negative wastewater storage tank 310 with microorganisms to produce a liquid fertilizer, A boiler 330 for supplying heat to the reactor 320 and a liquid fertilizer storage tank 340 for storing the liquid fertilizer manufactured in the reactor 330.

Fig. 2 shows the food storage part 100. Fig.

The food storage unit 100 includes a storage unit 110, a charging unit 120 installed at an upper portion of the storage unit 110, a guide wall 130 partially surrounding the charging unit 120, And a first conveying unit 610 disposed at a lower portion of the storage unit 110 to move the food from the storage unit 110 to the food processing unit 200.

The inlet 120 is provided to store the food collected by the vehicle collected by the food collection. The guide wall 130 surrounds the inlet to prevent the food to be introduced from splashing.

One side of the guide wall 130 is open, which is a passageway through which the vehicle can travel.

The first conveying unit 610 includes a housing 611, a conveying screw 612, and a driving motor 613 for driving the conveying screw.

The end surface of the housing 611 is shaped like a container so as to become narrower from the upper part to the lower part so as to smoothly collect food from the storage box 110.

The first transfer part 610 may be constituted by one row or may be constituted by a plurality of rows depending on the size of the storage box 110. [ The first conveyance unit 610 may be inclined downward for smooth conveyance, but the present invention is not limited thereto.

Fig. 3 shows a food processing section 200. Fig.

An upper portion of the food processing unit 200 is provided with a loading unit 210 into which the food transferred from the food storage unit 100 is introduced.

A first transfer part 610 is provided at one side of the insertion part 210 to drop the food to be transferred from the food storage part 100 into the food introduction part 200.

Foods may contain harmful substances such as metal or vinyl, so it is necessary to separate them. Conventionally, this sorting operation is performed by hand, but since the accuracy is lowered, a separate separating apparatus is required.

Accordingly, in the present invention, the magnetic force generating unit 220 and the blowing unit 230 are provided beside the charging unit.

The magnetic force generating unit 220 generates a magnetic force so that metal materials mixed with food are separated using an electromagnet or a permanent magnet.

To this end, the magnetic force generating unit 220 preferably includes a large plate portion 221 and a magnetic force generating device 222 for providing magnetism to the plate portion 221 so that many metal materials can be attached.

The blowing section 230 includes a blowing fan 231 and a blowing motor 232 for rotating the blowing fan 231.

By the action of the blowing part 230, a light piece of vinyl or other light foreign matter can be removed while being blown.

A suction unit 240 having a separate suction duct 241 and a suction fan 242 inside the suction unit 210 may be provided at the upper part of the loading unit 210 to collect foreign substances blown by the blowing unit 230.

Below the charging unit 210, a crushing unit 250 for finely crushing the foodstuff separated from the foreign substance is provided.

The crushing unit 250 is provided with a plurality of crushing blades 251 connected in series and the crushing blade 251 is mounted on the rotating shaft 252 and the rotating shaft 252 is connected to the crushing unit driving motor 253.

The rotary shaft 252 and the crusher drive motor 253 are preferably connected by a belt.

Accordingly, the rotating shaft 252 and the crushing blade 251 are rotated by the operation of the crushing unit driving motor 253 to crush the foodstuff put into the loading unit 210. Thereby grinding finely to a particle diameter of 1 to 2 mm or less.

A dehydrating unit 260 is provided under the crushing unit 250 to feed the crushed food and dehydrate it.

The dewatering unit 260 includes a perforation housing 261 formed with a perforation on the outer circumferential surface thereof, a transporting screw 262 provided inside the housing, and a driving motor 263 rotating the transporting screw 262.

Meanwhile, the perforated housing 261 includes a first perforated housing 261a that is formed to have a constant diameter and a second perforated housing 261b that includes a tapered portion whose diameter is sequentially reduced do.

The feed screw 262 also has a first feed screw 262a whose outer diameter is constantly formed to match the shape of the first bore housing 261a and a second feed screw 262b whose outer diameter is reduced in accordance with the shape of the second bore housing 261b And a second conveying screw 262b having a tapered portion.

The pulverized food is compressed between the transfer screw 262 and the inner surface of the perforated housing 261 while being transported in the discharge direction by the transfer screw 262.

In particular, it can be compressed intensively where there is a tapered portion.

By this compression action, the water contained in the food is dehydrated, and the moisture falls down to the bottom on the perforation of the perforated housing 261.

A collecting part 270 is provided below the perforated housing 261.

Preferably, the collecting part 270 is provided in a container shape whose width becomes narrower toward the bottom, and the lowermost end thereof is perforated.

A negative waste water conveyance unit 280 is provided below the collecting unit 270.

The waste water conveyance unit 280 includes a housing 281, a conveyance screw 282 provided inside the housing 281 and a drive motor for rotating the conveyance screw 282.

It is preferable that the negative waste water transfer unit 280 is formed to be upward sloped in the transfer direction so that the negative waste water can be transferred at a constant flow rate without being poured at a time.

The negative wastewater transfer unit 280 transfers the wastewater to the liquid fertilizer production unit.

3, the waste water conveyance unit 280 is connected to the temporary storage tank 301 for temporarily storing the waste water, and the pump unit 302 is provided beside the temporary storage tank 301. As shown in FIG.

A pump section 311 is provided in the negative wastewater storage tank 310 to supply negative wastewater in the negative wastewater storage tank 310 to the reactor 320.

The reactor 320 is supplied with heat and microorganisms to ferment the waste water to convert the waste water into liquid fertilizer. The reactor 320 is provided with a boiler 330 for supplying heat energy.

The microorganisms injected into the reactor 320 are preferably aerobic microorganisms. Specifically, a carrier containing aerobic microorganisms is introduced into a reactor to induce fermentation.

Once fermented for a certain period of time, the fermented liquid fertilizer can be moved to and stored in the liquid fertilizer storage tank 340 next to it.

The liquid fertilizer storage tank (340) is provided with a pump section (341) capable of extracting the liquid fertilizer.

The constitution of the fertilizer fermentation unit 400, which is made into a fertilizer by fermentation of the dehydrated food sludge with the sewage sludge and the sludge, is shown in FIG.

5, the fertilizer fermentation unit 400 includes a fermentation unit housing 410 formed in the form of a box, and a feeder unit 410 provided next to the fermentation unit housing 410 to supply air into the fermentation unit housing 410 An air supply unit 420 and a water supply unit 430 for selectively supplying water into the fermentation unit housing 410.

Oxygen is necessary for fermentation. Since oxygen in the fermentation housing 410 can not be fermented smoothly due to continuous fermentation, oxygen can be supplied from the outside by supplying air.

Here, the air feeder 420 is provided next to the fermentation housing 410 so that a large amount of air can be supplied at a time.

The air supply unit 420 may include an air pump or a fan unit for supplying air to the fermentation unit housing 410.

On the other hand, if the interior of the fermentation housing 410 is too dry, the fermentation process may not be smooth. Therefore, a water supply unit 430 is provided to supply moisture for optimizing fermentation.

The moisture sensor 440 may be installed inside the fermentation housing 410 and the moisture content of the interior of the fermentation housing 410 may be controlled by the moisture sensor 440, May be fed into the fermentation housing 410.

 A rotary stirrer 450 is provided in the inner space of the fermentation housing 410.

The agitating part 450 includes a stirring part driving motor 451, a rotating shaft 452 connected to the driving motor 451, a first extending part 453 extending in the outer circumferential direction from the rotating shaft 452, And a plurality of second extensions 454 extending back and forth in the extension 453.

 When the agitating part driving motor 451 operates, the rotating shaft 452 and the first extending part 453 horizontally rotate inside the fermentation part housing 410.

And the second extensions 454 move between the food sludge inside the fermentation housing 410 and the sewage sludge and the eutectic and stir to mix them well.

When the food sludge, the sludge, and the sewage sludge are mixed in the fermentation section housing with proper moisture and oxygen supplied thereto, the microorganisms inside the sewage sludge decompose the substances generating the odor in the food sludge, Can be removed.

In addition, the fermentation speed of the food sludge is increased by the effervescent agent such as coco peat or sawdust, and the degree of fermentation thereof is increased, so that a good quality organic fertilizer can be obtained.

In order to remove the odor and increase the fermentation speed, it is needless to say that the above components must be well mixed by the stirring part 450.

The odor elimination and fermentation process is performed and the produced organic fertilizer must undergo a separate aging process.

To this end, the fertilizer transfer unit 460 is blown under the fermentation unit housing 410.

The fertilizer transferring unit 460 includes a conveying screw 461 and a driving motor 462 and is connected to the above-described fertilizer aging unit 500 (see FIG. 1).

As described above, the fermentation section 500 is provided with the aging section housing 510 and the agitating section 520 provided therein.

The agitating unit 520 is provided with a stirring screw and a driving unit for rotating the screw.

Therefore, the organic fertilizer that has migrated to the fertilizer aging unit 500 is agitated by stirring operation of the agitating unit 520, and aged according to elapse of time.

By this means, the organic matter can be aged with an organic fertilizer which becomes richer.

Hereinafter, the procedure for manufacturing the organic fertilizer and the fermented liquid fertilizer according to the present invention will be described.

As shown in FIG. 6, food waste is stored in the food storage unit, and then transferred to the food processing unit (S1).

In the food processing section, metallic foreign substances are removed by the magnetic force generating section, and light foreign substances such as vinyl are removed from the food by the blowing section. Foods from which foreign matter has been removed are pulverized into fine particles having a particle diameter of 1 to 2 mm or less.

At this time, the water content of the crushed food is usually 70% or more, so that it contains a lot of water and the salt contained in the water is large, so it is difficult to use it as a fertilizer by fermenting it directly.

Therefore, the water content and the salt content are lowered by dewatering (S2).

Thus, the pulverized food becomes a food sludge through a dehydration process and is transferred to a fertilizer fermentation unit (S3).

The food sludge transferred to the fermentation section of the fertilizer is fermented by stirring with the activated sludge and microorganism-activated sludge and an eugenic agent such as sawdust or cocofit (S4).

In this process, water or air is supplied to increase the fermentation speed and increase the content of organic substances.

Through this process, an organic fertilizer is produced (S5), and the generated organic fertilizer is transferred to the aged part of the fertilizer and aged (S6).

When the aging process is completed, the organic fertilizer is shipped to the outside through the packaging process (S7).

On the other hand, the deionized water discharged from the food through the dehydration process is collected and transferred to the liquid fertilizer production unit (S8).

The negative wastewater transferred to the liquid fertilizer producing unit flows into the reactor through the negative wastewater storage tank, reacts with the microorganisms inside the reactor, and is heated and fermented into liquid fertilizer (S9).

In this process, salt contained in the waste water can be reduced.

When the fermented liquid fertilizer is fermented through the reaction and heating (S10), the fermented liquid fertilizer is transferred to the liquid fertilizer storage tank and is shipped (S11).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be appreciated that one embodiment is possible.

Accordingly, the true scope of the present invention should be determined by the technical idea of the claims.

100: food storage part 200: food processing part
300: liquid fertilizer manufacturing part 400: fertilizer fermentation part
500: fertilizer aging part

Claims (10)

A food storage part into which the collected food is put and stored;
A food processing unit connected to the storage unit for selectively removing foreign substances from the food transferred from the food storage unit and then crushing and dehydrating the food;
A liquid fertilizer manufacturing unit connected to the food processing unit to receive negative wastewater from the dewatering process to ferment the wastewater to produce a liquid fertilizer;
A fertilizer fermentation unit connected to the food processing unit to receive and store the crushed and dehydrated food chunks, and fermenting the food mass using the sewage sludge and the eutrophic raw material to produce an organic fertilizer;
And a fertilizer ripening part connected to the fertilizer fermentation part and aging the fertilizer coming from the fertilizer fermentation part. The method according to claim 1,
Wherein the food processing unit comprises:
An input unit into which the food transferred from the food storage unit is input;
A magnetic force generating unit provided adjacent to the charging unit to provide a magnetic force to remove a metal material mixed with food;
A blowing unit provided adjacent to the input unit to generate a wind capable of blowing light foreign matter mixed with food;
A crushing part formed as a plurality of crushing blades formed below the charging part and rotating to crush foodstuff;
A dewatering unit disposed below the crushing unit and configured as a piercing housing surrounding the feed screw and the feed screw to dewater while feeding food;
And a collecting unit provided at a lower portion of the dehydrating unit and collecting dehydrated waste water. 3. The method of claim 2,
Wherein the piercing housing comprises: a first housing having a constant diameter;
And a second housing connected to the first housing and having a region having a tapered shape such that the diameter thereof becomes smaller toward the discharge direction,
Wherein the conveying screw comprises a first conveying screw whose outer diameter is constant so as to correspond to the shape of the first housing; And a second conveying screw having a region corresponding to a tapered region of the second housing. 3. The method of claim 2,
Wherein the collecting unit is provided in a container form having a narrower width from the top to the bottom and a negative wastewater conveying unit for conveying the collected negative wastewater to the liquid fertilizer producing unit is provided at the lowermost part of the collecting unit,
Wherein the negative wastewater transfer unit comprises a housing and a feed screw provided upward in an ejecting direction. The method according to claim 1,
Wherein the liquid fertilizer producing unit comprises:
A negative waste water storage tank in which negative waste water dehydrated in the food processing unit is stored;
A reactor connected to the negative wastewater storage tank, for supplying negative wastewater and microorganisms for fermentation to generate a liquid fertilizer by causing reaction action;
A boiler connected to the reactor for supplying thermal energy for fermentation to the reactor;
And a liquid fertilizer storage tank connected to the reactor for storing the liquid fertilizer manufactured in the reactor. The method according to claim 1,
A sewage sludge supply unit connected to the fertilizer fermentation unit to store the sewage sludge collected at the sewage treatment plant and supply the sewage sludge to the fermentation unit;
Further comprising an eutectic supply unit connected to the fertilizer fermentation unit and supplying the fertilizer fermentation unit with an effervescent material composed of at least one of sawdust and coco peat. The method according to claim 1,
The fertilizer fermentation unit comprises:
A fermentation section housing in which dehydrated food and sewage sludge and eutrophic matter are accommodated and mixed; An air supply unit for supplying air into the fermentation unit housing;
A water supply part for supplying water into the fermentation part housing;
A stirrer for mixing and stirring the food and the sewage sludge and the effervescent material of the fermentation right housing; And a fertilizer transferring section for transferring the fertilizer, which has been manufactured, to the aging section of the fertilizer. Providing food;
Removing foreign matter contained in the food;
Pulverizing and dehydrating the food material from which the foreign substances have been removed to produce food sludge;
Mixing the food sludge with sewage sludge and an eutectic to produce an organic fertilizer;
Aging the prepared organic fertilizer by transferring the organic fertilizer to a separate space;
A method for producing an organic fertilizer and a fermented liquid fertilizer, the method comprising the steps of adding a microorganism to a dehydrated wastewater dehydrated in food, and heating the liquid fertilizer. 9. The method of claim 8,
Wherein the sewage sludge is sewage sludge activated by microorganisms and the eutectic is at least one of wood and coco peat. 9. The method of claim 8,
The step of producing the organic fertilizer comprises: supplying external air; Selectively supplying moisture; And stirring the food sludge with the sewage sludge and the effervescent agent by a rotary stirring method.

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