KR102465299B1 - Food waste disposing apparatus - Google Patents

Abstract

A food waste disposal apparatus is provided. The food waste disposal apparatus performing processes so as to receive crushed food waste and directly discharge the food waste to a sewer pipe, comprises: a stirring tank having a bottom with a porous structure; stirring blades coupled to a shaft and rotating inside the stirring tank; an upper crushing unit including a plurality of collision particles filled so as to flow between the stirring blades inside the stirring tank; a sedimentation tank disposed below the stirring tank and containing water; a sedimentation plate inserted inside the sedimentation tank; a lower decomposition unit disposed on the sedimentation plate and including a plurality of microorganism-carrying particles on which fermentation microorganisms are carried; and a treated water discharge pipe connected to the sedimentation tank at a position higher than that of the sedimentation plate to block the inflow of sludge having a specific gravity greater than that of water. The crushed food waste generated by friction with the colliding particles in the stirring tank falls on the sedimentation plate to be decomposed into decomposed substance having a specific gravity smaller than that of water by microorganism fermentation, and then at least some of the decomposed substance floats up to be discharged through the treated water discharge pipe. Food waste disposal may be more convenient.

Description

Food waste disposing apparatus

The present invention relates to a food waste treatment apparatus, and more particularly, to a food waste treatment apparatus capable of discharging food waste directly into a sewer pipe.

The generation of food waste continues to increase. Food waste from households as well as businesses has increased, making it difficult to properly dispose of it. Most of the food waste that is not incinerated and not landfilled is recycled as fertilizer.

Proper disposal of food waste also improves environmental pollution. An increase in the emission of food waste, an odor due to decomposition, and an increase in odorous substances are a cause of aggravation of environmental pollution. For these reasons, food waste treatment methods are being diversified.

For example, there have been many studies on pre-treatment methods such as crushing and pulverizing food waste to reduce its volume and dry it before transferring it to a treatment plant. Through this treatment, the amount of food waste can be reduced (eg, Korean Patent No. 10-1838915, etc.).

However, in recent years, attempts have been made to directly discharge the treated water containing solids within the standard value by decomposing the food waste more finely into the sewer pipe. However, most of them have problems such as low decomposition efficiency and excessive discharge of excessively generated sludge, so there is a lot of room for improvement.

Republic of Korea Patent Publication No. 10-1838915, (2018.03.15)

The technical object of the present invention is to solve this problem, and it is to provide a food waste treatment apparatus that improves the decomposition efficiency of food waste so that the food waste can be directly discharged into a sewer pipe.

The technical problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The food waste treatment apparatus according to the present invention is a food waste treatment apparatus for receiving crushed food waste and discharging it directly into a sewer pipe. An upper crushing part comprising a stirring blade rotating inside, and a plurality of colliding particles filled to flow between the stirring blades in the inside of the stirring tank; a lower decomposition unit disposed below the stirring tank and containing a settling tank containing water, a settling plate inserted into the settling tank, and a plurality of microorganism-carrying particles disposed on the settling plate and carrying fermenting microorganisms; and a treated water discharge pipe connected to the settling tank at a higher position than the settling plate to block the inflow of sludge having a higher specific gravity than water, wherein the pulverized product of the food waste generated by friction with the colliding particles in the stirring tank is , after falling on the settling plate and decomposed into decomposition products having a smaller specific gravity than water by microbial fermentation, at least a portion of the decomposition products floats and is discharged through the treated water discharge pipe.

The microorganism-carrying particles may be formed to include a first particulate carrier having a higher specific gravity than water, and the colliding particles may be formed to include a second particulate carrier having a smaller specific gravity than the first particulate carrier.

The colliding particles may further include fermenting microorganisms supported on the second particle-shaped carrier.

The first particulate carrier may be a porous sphere made of a ceramic material, and the second particulate carrier may be a porous sphere made of a plastic material.

The stirring tank may have an asymmetrical bottom so that the colliding particles are asymmetrically accommodated in the inner space.

The bottom of the stirring tank may be formed of an asymmetric concave surface in which one side is biased lower than the other side.

An elastic surface that is elastically deformable by contact with the colliding particles may be formed on at least a portion of the stirring blade.

The precipitation plate may be inclined to one side so that the microorganism-carrying particles are inclined in an inclined direction.

The precipitation plate may be formed of a perforated plate having a smaller diameter than the microorganism-carrying particles.

The food waste treatment apparatus may further include a water supply nozzle for supplying water into the stirring tank.

According to the present invention, food waste can be very effectively decomposed through a series of processes. The final decomposed food waste is mixed with treated water and can be directly discharged to the sewer pipe, making food waste treatment more convenient. The present invention contributes to automating the processing process of food waste because it is a technology that automatically decomposes and discharges the shredded food waste simply by inputting it. It can also reduce odor and improve the decomposition rate of food waste.

1 is a partially cut-away perspective view of an apparatus for treating food waste according to an embodiment of the present invention.
FIG. 2 is a longitudinal cross-sectional view of the food waste treatment apparatus of FIG. 1 .
3 is a B-B' cross-sectional view of the food waste treatment apparatus of FIG. 2 .
FIG. 4 is an operation diagram illustrating an operation of a stirring tank of the food waste treatment apparatus of FIG. 1 .
FIG. 5 is an operation diagram illustrating the operation of the settling tank of the food waste treatment apparatus of FIG. 1 .

Hereinafter, the contents of the present invention will be described through examples of the present invention, but the present invention is not limited to the following examples. The present invention may be implemented in various forms without being limited to the following embodiments. However, these examples are provided to support the present invention so that the disclosure of the present invention is complete, and to fully inform those skilled in the art of the scope of the present invention, the present invention is merely It is only defined by the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, an apparatus for treating food waste according to the present invention will be described in detail with reference to FIGS. 1 to 5 .

1 is a partially cut-away perspective view of an apparatus for treating food waste according to an embodiment of the present invention. 1 is a view showing a portion of the housing in a cut-away state.

Referring to FIG. 1 , in the food waste treatment apparatus 1 according to the present invention, an upper crushing unit 100 and a lower disassembling unit 200 are continuously arranged vertically. The food waste finely pulverized by the upper crushing unit 100 falls to the lower decomposing unit 200 .

In the lower decomposition unit 200, microbial decomposition by microbial fermentation proceeds after precipitation and precipitation of the pulverized food waste. Through this, food waste is finally decomposed into decomposition products that have a lower specific gravity than water and can float on their own.

Due to this, the finally decomposed food waste decomposition product floats to the treated water discharge pipe 230 disposed higher than the settling position and can be discharged. Therefore, the discharge of sludge with a higher specific gravity than water is fundamentally blocked, and only a small amount of completely decomposed decomposition products can be discharged to the sewer pipe.

The food waste treatment apparatus 1 of the present invention is configured as follows. The food waste treatment apparatus (1) is a food waste treatment apparatus for receiving crushed food waste and discharging it directly into a sewer pipe. A stirring blade 120 coupled to and rotating in the stirring tank 110, and a plurality of collision particles 10 filled to flow between the stirring blade 120 in the inside of the stirring tank 110. The upper crushing unit 100, the settling tank 210 disposed below the stirring tank 110 and containing water, the settling plate 220 inserted into the settling tank 210, and the settling plate 220 are disposed on the fermentation A process of blocking the inflow of sludge having a higher specific gravity than water by being connected to a lower decomposition unit 200 including a plurality of microorganism-supported particles 20 on which microorganisms are supported, and a position higher than the settling plate 220 in the settling tank 210 . The pulverized product of food waste generated by friction with the colliding particles 10 in the stirring tank 110, including the water discharge pipe 230, falls on the settling plate 220, and a decomposition product having a smaller specific gravity than water due to microbial fermentation After decomposition, at least a portion of the decomposed product floats and is discharged through the treated water discharge pipe 230 .

In particular, in an embodiment of the present invention, the fermenting microorganism is also supported on the collision particles 10 . That is, the microorganism-carrying particles 20 are formed to include a first particulate carrier having a higher specific gravity than water (see 20a in FIG. 2 ), and the colliding particles 10 have a smaller specific gravity than the first particulate carrier 20a. It is formed to include a two-particulate carrier (see 10a in FIG. 2 ), and the colliding particles 10 may further include fermenting microorganisms supported on the second particulate carrier 10a.

Based on such an embodiment of the present invention, the configuration and effect of the present invention will be described in more detail.

First, the overall structure of the device will be briefly described, and the configuration of each part of the upper crushing unit 100 and the lower disassembling unit 200 will be described in turn. As shown in FIG. 1 , the food waste treatment apparatus 1 may have a structure in which the upper crushing unit 100 and the lower disassembling unit 200 are accommodated in the housing 300 .

In FIG. 1 , a portion of the housing 300 is partially cut to show the inside of the food waste treatment apparatus 1 . The housing 300 may be formed in various shapes capable of embedding components to be described later in the inner space. Therefore, it is not necessary to be limited to the form of this embodiment.

An inlet 310 through which food waste is put and an input pipe 311 connected thereto are disposed on the upper portion of the housing 300 . The inlet 310 communicates with the stirring tank 110 and may be any structure capable of supplying food waste into the stirring tank 110 . For example, when the upper part of the stirring tank 110 is open as in the present embodiment, the inlet 310 may be formed in a structure such as an opening or a hopper through which food waste can be dropped into the stirring tank 110 . .

The inlet 310 does not necessarily need to be connected by a pipe, etc., and may be formed as an openable door or the like. Various types of input structures for receiving crushed food waste may be formed.

The inlet 310 may be connected to a food waste pretreatment device (not shown) through the same conduit as the input pipe 311 . The pretreatment device may be, for example, a food waste shredding device (eg, a disposer) that crushes food waste with a blade or the like. The food waste treatment device 1 is provided with the food waste crushed by the pretreatment device.

A water supply nozzle 320 for supplying water into the stirring tank 110 is disposed on one side of the housing 300 . Although the water supply nozzle 320 is shown at the top of the housing 300 in the drawing, it is not necessary to be limited thereto, and water supply equipment can be arranged in various positions that can supply water in the stirring tank 110 . The shape, structure, and position of the water supply nozzle 320 may be changed as necessary.

A driving unit 330 for driving the shaft 122 of the stirring blade 120 may also be formed inside the housing 300 . The driving unit 330 may include, for example, a motor and a reduction device, and may be connected to the shaft 122 . Since the driving unit 330 is a general one, the detailed structure is omitted.

FIG. 2 is a longitudinal cross-sectional view of the food waste treatment apparatus of FIG. 1 , and FIG. 3 is a sectional view taken along line B-B' of the food waste treatment apparatus of FIG. 2 .

Hereinafter, the internal structure of the device will be described in more detail with reference to FIGS. 2 and 3 along with FIG. 1 . 2 and 3 , the upper crushing part 100 and the lower disassembling part 200 communicate with each other through the inner space of the housing 300 . By disposing the upper crushing unit 100 and the lower decomposing unit 200 vertically, the food waste can be moved between the processes by falling without any power, and the crushing process and the decomposing process can be linked.

The upper crushing unit 100 includes a stirring tank 110 , a stirring blade 120 , and colliding particles 10 . The collision particles 10 are filled to flow between the stirring blades 120 inside the stirring tank 110 . In particular, it is possible to finely pulverize the food waste (those that have been crushed by a disposer, etc. and then put into the inlet) through a process such as collision with the colliding particles 10 and friction.

The stirring tank 110 has an open top and a porous bottom. As shown in FIG. 2 , a plurality of fine through-holes 111 are disposed in the bottom 110a of the stirring tank 110 . Therefore, the size of the pulverized material falling down the stirring tank 110 by the through hole 111 may be limited. For example, the through hole 111 may have a diameter of several millimeters or less (preferably, 1.5 mm or less).

A plurality of through holes 111 are formed in the bottom 110a. The number of through holes 111 may be several thousand or more. Therefore, the number of the through-holes 111 shown in the drawings is exemplary and not limiting. In addition to the number of through holes 111, the shape, position, diameter, etc. can be adjusted as needed.

The stirring tank 110 may have an asymmetric structure at the bottom 110a as shown in FIG. 2 . Accordingly, the colliding particles 10 may also be asymmetrically accommodated in the inner space. For example, the bottom 110a of the stirring tank 110 may be formed of an asymmetric concave surface (concave curved surface) with one side biased lower than the other side.

The bottom 110a may be formed to be concave with respect to the shaft 122 on which the stirring blade 120 is mounted, and one side may be lower than the other side to better discharge the pulverized food waste. In Figure 2, a lower right side of the stirring blade 120 than the left side of the bottom (110a) with respect to the drawing was illustrated. It is also possible to increase the degree of bias as needed.

This asymmetrical structure not only induces the pulverized food waste to be discharged to one side more easily, but also forms a portion where the flow of the colliding particles 10 is relatively small (the portion where the distance between the floor and the shaft increases), and the colliding particles 10 ) and the contact of the pulverized food waste with the microorganisms may be induced to be partially stable.

A large number of the collision particles 10 are filled in the stirring tank 110 . The collision particles 10 do not completely fill the agitation tank 110 , and since they are filled only in a part of the agitation tank 110 , they can easily flow inside the agitation tank 110 (see FIG. 4 ).

The colliding particles 10 are mixed with the food waste by the rotation of the stirring blade 120 , and the food waste is pulverized in the stirring tank 110 . The food waste is very finely pulverized in the stirring tank 110 as processes such as collision between the colliding particles 10 and the food waste and friction caused by the collision are repeated. A specific processing process will be described later.

In this embodiment, the colliding particles 10 may support microorganisms. For example, the colliding particles 10 may be formed in a form containing a particle-type carrier lighter than the microorganism-carrying particles 20 disposed in the sedimentation tank 210 .

That is, the microorganism-carrying particles 20 to be described later are formed to include a first particulate carrier 20a having a higher specific gravity than water, and the colliding particles 10 are second particles having a smaller specific gravity than the first particulate carrier 20a. It may be formed including the type carrier (10a). The collision particles 10 may further include fermenting microorganisms supported on the second particle-shaped carrier 10a.

For example, the colliding particles 10 may be filled in the stirring tank 110 in a state in which the fermenting microorganisms are supported on the second particle-shaped carrier 10a. Accordingly, the colliding particles 10 may crush the food waste introduced while flowing in the stirring tank 110 by friction and at the same time make contact with the fermenting microorganisms. This may further promote degradation by microorganisms.

For example, the second particulate carrier 10a may be a porous sphere made of a plastic material. The plastic material may include polypropylene and the like. Although the surface and the like are not shown in detail in FIG. 2 , the second particulate carrier 10a may be formed in various types of porous structures having voids on the surface or inside thereof. The porous structure is not limited as long as it can support fermenting microorganisms.

Since the colliding particles 10 are formed of a light material such as plastic, they can easily flow inside the agitating tank 110 , and there is no problem even if a large number of colliding particles 10 are accommodated in the agitating tank 110 . . Also, even if the collision particles 10 collide with the stirring blade 120 , the stirring blade 120 is not damaged. In addition, since the colliding particles 10 are relatively light, even when the shaft 122 is driven, it is possible to drive the shaft 122 with a relatively small load.

The stirring blade 120 is coupled to the shaft 122 to be rotatable in the stirring tank 110 . The stirring blade 120 and the shaft 122 may be connected by a connecting bar 121 or the like. As shown in FIG. 3 , the shaft 122 may be disposed through the stirring tank 110 , and one end may be connected to the above-described driving unit 330 .

Since the connection structure of the stirring blade 120 and the shaft 122, the shape of the stirring blade 120, the number of the stirring blades 120, etc. are exemplary, it is not necessary to be limited to the form shown in FIG. 3 . The stirring blade 120 is coupled to the shaft 122 and rotates, and may be deformed into various shapes capable of effectively stirring the object accommodated in the stirring tank 110 .

For example, an elastic surface (not shown) that can be elastically deformed by contact with the colliding particles 10 may be formed on at least a part of the stirring blade 120 . The stirring blade 120, the shaft 122, the connecting bar 121, etc. may be formed of a metal material, but may be formed of other materials as needed.

The lower decomposition unit 200 is disposed below the upper crushing unit 100 . The lower decomposition unit 200 includes a settling tank 210 , a settling plate 220 , and a plurality of microorganism-carrying particles 20 . The microorganism-carrying particles 20 are disposed on the settling plate 220 and support the fermenting microorganisms. The microorganism-carrying particles 20 may sink on the settling plate 220 without substantial flow, and the pulverized product falling from the stirring tank 110 is in contact with the fermented microorganisms supported on the microorganism-carrying particles 20 through the fermentation process. can be decomposed.

The settling tank 210 is formed so that the upper part is opened so that the pulverized material falling from the stirring tank 110 can be collected from the lower part. Water (D) is accommodated in the sedimentation tank 210, and thus the collected pulverized material is precipitated in water and decomposed by microorganisms. The settling tank 210 is also not necessarily limited to the form shown and may be transformed into various shapes that can accommodate the water D and the settling plate 220 therein and receive the falling pulverized material.

Water (D) inside the settling tank 210 can be supplied from the water supply nozzle 320, but it is possible to form a separate water supply device that can supply water to the settling tank 210 and receive water through another route. It is possible.

A settling plate 220 is inserted into the settling tank 210 . The settling plate 220 serves as a kind of arranging plate for stably arranging the microorganism-carrying particles 20 . The settling plate 220 may be formed of a perforated plate in which a through hole 221 having a diameter smaller than that of the microorganism-carrying particle 20 is perforated, and the width may be formed to correspond to the width of the settling tank 210 .

As shown in FIG. 2 , a plurality of microorganism-carrying particles 20 on which fermentation microorganisms are supported are disposed on the settling plate 220 . As described above, the microorganism-carrying particles 20 are formed to include the first particle-shaped carrier 20a having a higher specific gravity than water. The microorganism-carrying particles 20 may be those in which the fermenting microorganisms are supported on the first particle-shaped carrier 20a.

Since the first particulate carrier 20a has a greater specific gravity than water, it sinks and accumulates on the settling plate 220 . That is, the second particle-shaped carrier 10a constituting the above-described colliding particles 10 flows in the stirring tank 110 and comes into contact with the food waste, and the first particle-shaped carrier 10 constituting the microorganism-carrying particles 20 ( 20a) is in contact with the food waste in a static state in the settling tank 210 .

The first particulate carrier 20a may be, for example, a porous sphere made of a ceramic material. Although the surface structure and the like are not shown in detail in FIG. 2 , the first particulate carrier 20a may be formed of a sphere made of a ceramic material having a plurality of pores formed on its surface. If necessary, it is also possible to include mineral components such as loess components and magnesium components in the first particulate carrier 20a.

The fermented microorganisms supported on the first particulate carrier 20a may be capable of decomposing food waste, and may be capable of decomposing food waste in a manner such as fermentation extinction. Such fermenting microorganisms may include, for example, bacteria of the genus Bacillus.

The same fermenting microorganism as the first particle-shaped carrier 20a may also be supported on the second particulate carrier 10a constituting the collision particles 10 described above. However, it is not necessary to be limited as such, and it is also possible that different microorganisms are supported. It is preferable that microorganisms capable of causing a synergistic effect with each other are supported.

The precipitation plate 220 may be inclined to one side as shown in FIG. 2 , and thus the microorganism-carrying particles 20 may be inclined in the inclined direction. Since the depth at which the microorganism-carrying particles 20 are stacked by the inclination increases toward the inclined side, the pulverized material that has fallen to the corresponding position can be sufficiently contacted with the microorganisms supported on the microorganism-carrying particles 20 to be more effectively decomposed.

To this end, the side from which the pulverized material is more easily discharged from the stirring tank 110 (the side where the bottom of the above-described stirring tank is inclined lower) and the inclined side of the settling plate 220 may be arranged to match each other.

The treated water discharge pipe 230 is connected to the settling tank 210 . As shown in FIGS. 2 and 3 , the treated water discharge pipe 230 is higher than the settling plate 220 , so it is possible to block the inflow of sludge having a higher specific gravity than water. That is, by forming the treated water discharge pipe 230 connected to a position higher than the sedimentation plate 220 (preferably, higher than the uppermost layer of the microorganism-carrying particles) rather than the bottom of the sedimentation tank 210, unnecessary sludge (or solids) inflow can be stopped

The other side of the treated water discharge pipe 230 that is not connected to the settling tank 210 is connected to a sewage pipe (not shown). The treated water discharge pipe 230 may be implemented in various ways to connect the settling tank 210 and the sewage pipe. For example, since the treated water discharge pipe 230 of various types may be formed with a fixed type pipe or a fluid type pipe such as a corrugated pipe, the treated water discharge pipe 230 also does not need to be limited to the illustrated form.

Due to this structure, in the present invention, the pulverized product of food waste generated by friction with the colliding particles 10 in the stirring tank 110 falls on the settling plate 220 and becomes a decomposition product having a smaller specific gravity than water by microbial desiccation. After decomposition, at least a portion of the decomposed product floats and is discharged through the treated water discharge pipe 230 . Hereinafter, the operation of the food waste processing apparatus 1 will be described in more detail.

FIG. 4 is an operation diagram illustrating the operation of the stirring tank of the food waste processing apparatus of FIG. 1 , and FIG. 5 is an operation diagram illustrating the operation of the settling tank of the food waste processing apparatus of FIG. 1 . 4 and 5 the housing has been removed.

Referring to FIG. 4 , the food waste A input to the food waste treatment apparatus is first crushed by the upper crushing unit 100 . As described above, the food waste (A) may be provided from the pretreatment device, and may be crushed and reduced in volume. The crushed food waste (A) is introduced into the agitation tank 110 through the inlet 310 and is pulverized more finely while being repeatedly stirred in the agitation tank 110 .

The food waste (A) is continuously pulverized into smaller pieces while being stirred in the stirring tank (110). In particular, the colliding particles 10 flow by the rotation of the stirring blade 120 , and very fine food waste pulverized product B is formed by collision with the flowing colliding particles 10 and friction caused by the collision. The pulverized material (B) is discharged out of the stirring tank 110 only after being finely pulverized to at least a size that can pass through the through hole 111 of the bottom 110a.

While stirring is in progress, water (D) is provided from the water supply nozzle 320 in the stirring tank 110 . The water supply nozzle 320 may operate continuously or intermittently, and the pulverized food waste (B) may be mixed with water (D) and stirred. The water D provided by the water supply nozzle 320 may fall to the lower part of the stirring tank 110 and be accommodated in the settling tank 210 .

In this pulverization process, the pulverized product (B) may also be in contact with the fermenting microorganisms supported on the colliding particles (10). That is, as in the present embodiment, when the colliding particles 10 include the second particle-shaped carrier 10a and the fermented microorganisms supported therein, the grinding process using the colliding particles 10 is performed, and at the same time, the pulverized product B and fermentation Microorganisms can be contacted.

Due to this, even inside the stirring tank 110, decomposition by microbial fermentation may be partially progressed. For example, the decomposition action may proceed more actively on the side where the bottom 110a of the stirring tank 110 is further away from the shaft 122 (the side where the colliding particles flow relatively less). As such, the pulverized food waste B finely pulverized in the stirring tank 110 is discharged through the through hole 111 of the bottom 110a.

Referring to FIG. 5 , the discharged pulverized product B is immediately dropped into the settling tank 210 . The pulverized products (B) dropped into the settling tank 210 are precipitated on the surface of the microorganism-carrying particles 20 disposed on the settling plate 220 , and also penetrate into the space between the microorganism-carrying particles 20 . In such a way, it is possible to contact the microorganism-carrying particles 20 at various points on the precipitation plate 220 .

In a state of being precipitated and in contact with the microorganism-carrying particles 20 , the pulverized food waste B is fermented and decomposed by the fermenting microorganisms supported on the microorganism-carrying particles 20 . For example, the pulverized product (B) may be decomposed in the sedimentation tank 210 by the above-described Bacillus equivalent fermenting microorganism. The decomposition products (C) produced by being sufficiently decomposed may have a lower specific gravity than the water (D).

Therefore, as shown in the enlarged view of FIG. 5 , at least some of the decomposition products C naturally float and reach the treated water discharge pipe 230 . As described above, the other side of the treated water discharge pipe 230 that is not connected to the settling tank 210 is connected to the sewage pipe, and the side connected to the settling tank 210 is disposed higher than the settling plate 220. is blocked

For this reason, substantially only the floating decomposition products (C) having a smaller specific gravity than the water (D) reach the treated water discharge pipe 230 and are mixed with the water (D) in the form of treated water and discharged. Therefore, it is possible to control the concentration of food waste solids (which may mean a component other than water in the discharged treated water) to less than the allowable standard, and discharge it to the sewer pipe. (For example, when the allowable standard value is less than 20% of the input solids under the condition that it can be discharged to the sewer, the present invention can control the solids concentration to less than 7%, which is lower than that).

The food waste crushed in this way is provided and pulverized into a finer pulverized product (B), and the pulverized product (B) is decomposed into a decomposition product (C) by microbial fermentation, so that only the treated water whose concentration is controlled can be discharged. Since the entire processing process is integrated, automated, and continuous, it is advantageous not only to treat food waste more conveniently, but also to dispose of food waste in large quantities. Food waste can be disposed of in this way.

Although embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can understand that the present invention is possible in other specific forms without changing the technical spirit or essential features thereof. There will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

1: Food waste treatment device 10: Collision particles
10a: second particulate carrier 20: microorganism-carrying particles
20a: first particulate carrier 100: upper crushing part
110: stirring tank 110a: bottom of stirring tank
111, 221: through hole 120: stirring blade
121: connecting bar 122: shaft
200: lower decomposition part 210: sedimentation tank
220: settling plate 230: treated water discharge pipe
300: housing 310: inlet
311: input pipe 320: water supply nozzle
330: driving unit
A: Shredded food waste B: Pulverized material
C: decomposition product D: water

Claims (10)

In the food waste treatment device for receiving crushed food waste and discharging it directly into a sewer pipe,
The stirring tank 110 having a bottom 110a having a porous structure, the stirring blade 120 coupled to the shaft and rotating in the stirring bath 110, and the stirring blade inside the stirring tank 110 An upper crushing unit 100 including a plurality of collision particles 10 filled to be able to flow between the 120;
A settling tank 210 disposed below the stirring tank 110 and containing water, a settling plate 220 inserted into the settling tank 210, and a settling plate 220 disposed on the settling plate 220 and carrying fermented microorganisms A lower decomposition unit 200 including a plurality of microorganism-carrying particles 20; and
and a treated water discharge pipe 230 connected to the settling tank 210 at a position higher than the settling plate 220 to block the inflow of sludge having a higher specific gravity than water,
The colliding particles 10,
The second particle-shaped carrier 10a, which is a porous sphere made of a plastic material, is filled in the stirring tank 110 in a state in which the fermenting microorganism is supported, and even if the collision particles 10 collide with the stirring blade 120, the stirring blade ( Even when driving the shaft 122 without damaging the 120, it is formed to be driven with a relatively small load,
The bottom 110a of the stirring tank 110 is,
One side is made of an asymmetric concave surface that is biased lower than the other side, so that the distance between the bottom 110a and the shaft 122 inside the stirring tank 110 increases, and the flow of the colliding particles 10 is relatively small. to form a stable contact between the microorganisms supported on the colliding particles 10 and the pulverized food waste,
The microorganism-carrying particles 20,
Including a first particulate carrier (20a) having a higher specific gravity than water,
The treated water discharge pipe 230 is,
It is connected to the sedimentation tank 210 higher than the uppermost layer of the microorganism-carrying particles 20, and the first particulate carrier 20a is in contact with the food waste in a static state in the sedimentation tank 210,
After the pulverized product of the food waste generated by friction with the colliding particles 10 in the stirring tank 110 falls on the settling plate 220 and is decomposed into decomposition products having a smaller specific gravity than water by microbial fermentation, At least a portion of the decomposition product floats and is discharged through the treated water discharge pipe 230,
Food waste treatment apparatus, characterized in that only floating decomposition products having a smaller specific gravity than water reach the treated water discharge pipe (230), adjust the concentration of food waste solids to less than an allowable standard, and discharge it to the sewer pipe. delete delete According to claim 1,
The first particulate carrier (20a) is a food waste treatment apparatus, characterized in that the porous sphere made of a ceramic material. delete delete According to claim 1,
The food waste treatment apparatus, characterized in that at least a part of the stirring blade (120) has an elastic surface that can be elastically deformed by contact with the colliding particles (10). According to claim 1,
The settling plate 220 is inclined to one side so that the microorganism-carrying particles 20 are inclined in an inclined direction. 9. The method of claim 8,
The settling plate 220 is a food waste treatment apparatus, characterized in that it is formed of a perforated plate having a smaller diameter than that of the microorganism-carrying particles 20. According to claim 1,
Food waste treatment apparatus, characterized in that it further comprises a water supply nozzle (320) for supplying water to the inside of the stirring tank (110).

Images