JPH0487677A - Treatment of solid-liquid separated and crushed garbage waste - Google Patents

Abstract

PURPOSE:To prevent leaching of garbage juice and to prevent generation of offensive odor and mold in a long period by performing solid-liquid separation for waste water contg. crushed garbage and mixing both an antifungus agent and water absorptive polymer substance with the separated solid material. CONSTITUTION:A valve 22 is opened by synchronizing with discharge of solid material B. A water absorbent 21 contg. an antifungus agent is atomized through a chemical supply pipe 18 and mixed by a kneader 25. In this case, the antifungus agent is uniformly mixed by pore water present between the respective solid materials B and on the other hand, the water absorbent surely absorbs this pore water. Herein the prescribed amount of the water absorbent 21 contg. the antifungus agent is cut out by opening the valve 22 and stored between the valves 22, 23. After the valve 22 is closed, the valve 23 is opened and simultaneously air is supplied from a compressor 24. The water absorbent 21 contg. the antifungus agent is atomized by this air through the chemical supply pipe 18 as above-mentioned. On the other hand, the separated liquid C flows through the inside of an outer drum 4 and is discharged from a discharge port 7 via an overflow weir 5A.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for treating solids in wastewater containing crushed kitchen waste.

[Prior Art] In recent years, attempts have been made to equip kitchen equipment with disposers. In this case, the kitchen waste is crushed by the disposer, and the crushed kitchen waste is discharged into the drain pipe together with water.

In this way, after the kitchen waste is crushed by the disposer, it can be discharged along with water into the drain pipe, which eliminates the troublesome work of taking out kitchen waste every time it accumulates in the sink, which can reduce the work of housewives and others. becomes.

[Problem to be solved by the invention]

Although there are methods to easily separate the crushed kitchen waste and water contained therein, the reality is that there is no effective method for treating and disposing of the separated crushed kitchen waste.

To name a few conventional solid-liquid separation methods for wastewater containing crushed kitchen waste, there is a method using a solid-liquid N treatment device such as a screen, but in this case, the separated solids are manually processed and disposed of. Therefore, it is not practical. or,
The moisture content of the separated solids is high, resulting in so-called sewage that drips onto the floor etc. when the separated solids are handled. As a result, they are forced to clean. However, since this sewage is easily putrefied, it causes odor and insect pests, which poses environmental and hygienic problems.

Although it has been proposed to add a coagulant to form flocs for dewatering, there are problems in that drainage is difficult and subsequent operations tend to be unhygienic.

In order to solve such a problem, the present inventor first performs solid-liquid separation of wastewater containing crushed kitchen waste, and then mixes the separated solid with a water-absorbing polymeric substance. Method for treating shredded kitchen waste separated into solid and liquid (Patent Application No. 1999-
No. 333866) was filed.

As in this previous application, if wastewater containing crushed kitchen waste is separated into solid and liquid, and the separated solids are mixed with a water-absorbing polymer substance, the kitchen waste will be separated over a period of about 24 to 48 hours. can prevent leaching.

However, since this treated kitchen waste is simply a mixture of separated solid matter and a water-absorbing polymeric substance, a bad odor and mold are generated after 2 to 3 days, and after 5 days, kitchen waste begins to ooze out.

Therefore, a method may be considered in which a deodorizing agent is mixed or sprayed into the treated kitchen waste that has been treated as described above. However, although this method does provide a short-term deodorizing effect, it cannot suppress the leaching of kitchen waste. When kitchen waste begins to leach, it is decomposed by microorganisms and becomes a new source of bad odors.

As mentioned above, the generation of bad odors from treated kitchen waste that has been absorbed and dehydrated by water-absorbing polymer substances is due to the fact that the kitchen waste is decomposed into malodorous substances by microorganisms that have grown in the treated kitchen waste, and the leaching of kitchen waste is caused by microorganisms. This occurs because the tissue of vegetables is destroyed by the action of

Therefore, the major advantage of the present invention is to prevent the leaching of kitchen waste, the generation of bad odors, and the prevention of mold over a long period of time by suppressing the growth of microorganisms, which are the root cause of malodors and the generation of kitchen waste. The object of the present invention is to provide a method for treating shredded kitchen waste that has undergone solid-liquid separation.

[Means for Solving the Problems] The method for treating crushed kitchen waste subjected to solid-liquid separation according to claim 1 includes solid-liquid separation of wastewater containing crushed kitchen waste, and adding an antibacterial agent to the separated solids. and a water-absorbing polymer substance.

The method of treating shredded kitchen waste that has been separated into solid and liquid according to claim 2 is the method of treating shredded kitchen waste that has been separated into solid and liquid, in which the powdered antibacterial agent and the water-absorbing polymeric substance are added in advance. It is a mixture.

The method for treating crushed kitchen waste subjected to solid-liquid separation according to claim 3 includes solid-liquid separation of wastewater containing crushed kitchen waste, mixing an antibacterial agent with the separated solids, and then mixing this mixture with an antibacterial agent. A water-absorbing polymer substance is mixed with the water-absorbing polymer material.

The method for treating shredded kitchen waste subjected to solid-liquid separation according to claim 4 is the method for treating shredded kitchen waste according to claim 3, wherein the antibacterial agent is in the form of powder or solution.

[Function] In the method for treating shredded kitchen waste subjected to solid-liquid separation according to claims 1 to 4, the separated solids after solid-liquid separation include:
Since it mixes an antibacterial agent and a water-absorbing polymer material, the antibacterial agent is evenly mixed with the pore water that exists between each solid, and the pore water is reliably absorbed by the water-absorbing polymer material. can do. This prevents dirt from dripping, and the interstitial water in the separated solids evenly mixes the antibacterial agent, suppressing the growth of microorganisms and cleaning the tissue of the vegetables during cooking. can be made more difficult to destroy.

[Example〕 Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows an embodiment of the present invention, in which a screw decanter type centrifugal separator is used as the centrifugal separator.

This screw decanter type centrifuge 1 consists of a rotating shaft 2, an inner screw 3 arranged around the rotating shaft 2 and rotated by another drive source, and an outer screw 3 arranged around the inner screw 3. A shell 4, a cover 5 surrounding the outer shell 4, a dehydrated cake outlet 6 provided in a part of the cover 5,
A separated liquid discharge lower provided in a part of the cover 5 and a gearbox 9 attached to one end of the rotating shaft 2 via a bearing 8.
and a wastewater supply pipe 10 containing crushed kitchen waste that is attached to the end of the rotating shaft 2 and discharges the crushed kitchen waste-containing wastewater A from a discharge port 11 provided in the middle of the rotating shaft 2; , a solid matter discharge port 12 formed between the rotating shaft 2 and the outer shell 4, a bearing 13 attached to the opposite side of the gearbox 9, a pulley 14, a base 15, and a safety device 16. .

In addition, the wastewater supply pipe 10 containing crushed kitchen waste is equipped with a disposer (
A sink (not shown) attached to the sink (not shown) is in communication.

Furthermore, a discharge pipe 17 is attached to the dehydrated cake discharge port 6 of the screw decanter type centrifugal separator 1, and a kneading pipe 17 called a kneader, bag mixer, etc. is installed at the bottom of the discharge pipe 17. 25
is located. This kneader 25 is rotated by a motor 26 and is used to mix the solid material B and the antibacterial agent-containing water absorbing agent 21.

Furthermore, a drug supply pipe 18 is connected to the discharge pipe 17 . This drug supply pipe 18 communicates with a drug solution hopper 20, and valves 22, 23 and a compressor 24 are disposed along the way. The valves 22 and 23 are the chemical liquid hopper 2.
This is provided to prevent the antibacterial agent-containing water absorbing agent 21 placed in the predetermined lid from absorbing moisture. The compressor 24 is for spraying the antibacterial agent-containing water absorbing agent 21 using air force.

Here, as the water absorbing agent, for example, a water absorbing polymer material obtained by graft polymerizing polyacrylic acid to starch is used.

The water-absorbing polymer material may be any polymer having water-absorbing power of various compositions such as starch-based and polyacrylic acid-based materials (for example, "Super Water-Absorbing Polymer" published by Imori Publishing). (See Fusayoshi Masuda.)

The antibacterial agent satisfies the requirements listed below, and sodium benzoate and potassium sorbate, which are commonly used as food preservatives, are particularly preferred.

■ Contains no harmful heavy metals (if processed kitchen waste is incinerated, harmful heavy metals will remain in the atmosphere or in the incineration ash, which is unfavorable from an environmental perspective).

■ Be water-soluble (separated solids contain water as interstitial water, and it is difficult to evenly mix small amounts of water-insoluble antibacterial agents with this water).

■ It must be inexpensive.

■ Easily available.

■ Be safe.

Next, an example of a method for treating wastewater containing shredded kitchen waste supplied via the shredded kitchen waste-containing wastewater supply pipe 10 using the apparatus configured in this manner will be described.

The wastewater A containing crushed kitchen waste is stored in a regulating tank (not shown) in advance, and the planned amount is stored (reaches a predetermined water level).
Then, the screw decanter type centrifuge 1 starts operating.

When the screw decanter type centrifugal separator 1 reaches a preset rotation speed, the wastewater A containing crushed kitchen waste is supplied from the adjustment tank directly by a pump or via a metering tank via the wastewater supply pipe 10 containing crushed kitchen waste. be done. The wastewater A containing crushed kitchen waste inside the outer shell 4 is separated into liquid and solid by centrifugal force because of the difference in specific gravity. Solids with high specific gravity are deposited in layers on the inner wall of the outer shell 4. The solids B accumulated in a layer on the inner wall of the outer shell 4 are conveyed by the inner shell screw 3 which rotates at a slightly slower speed than the outer shell 4, and are continuously discharged from the solids discharge port 12. From the dehydrated cake outlet 6,
It falls into the kneading machine 25 through the discharge pipe 17 (.

In synchronization with the discharge of the solid matter B, the valve 22 is opened, and the antibacterial agent-containing water absorbent 21 is sprayed through the medicine supply pipe 18 and mixed by the mixer 25 . At this time, the antibacterial agent is evenly mixed by the pore water existing between each solid substance B, while the water absorbing agent reliably absorbs the pore water.

Here, a predetermined amount of the antibacterial agent-containing water absorbing agent 21 is cut out by opening the valve 22 and stored between the valves 22 and 23. After closing the valve 22, at the same time as opening the valve 23, air is released from the compressor 24. supply,
This air causes the drug to be sprayed from the drug supply pipe 18 as described above.

On the other hand, the separated liquid C flows inside the outer shell 4 and flows into the overflow layer 5A.
The separated liquid is then discharged from the separated liquid discharge lower.

By sequentially repeating the above-mentioned operations, the crushed kitchen waste-containing wastewater A that is continuously supplied through the crushed kitchen waste-containing wastewater supply pipe 10 is reliably separated into solid and liquid, and then separated between each solid substance B. The antibacterial agent is evenly mixed by the existing pore water, and the pore water is reliably absorbed by the water-absorbing polymeric material. This prevents dirt from dripping, and the interstitial water in the separated solids evenly mixes the antibacterial agent, suppressing the growth of microorganisms and cleaning the tissue of the vegetables during cooking. can be made more difficult to destroy.

The solids treated in this way are easy to handle because they do not produce sewage, and they are also less likely to rot, so there is no odor or odor.
Does not cause problems such as pests or mold.

Here, after solid-liquid separation of shredded kitchen waste, the present inventors analyzed three types of waste: (1) without any treatment, (2) treated with water absorption with a water-absorbing agent, and (2) treated with water-absorbing agent with benzoic acid as an antibacterial agent. one with sodium added; ■ one with potassium sorbate added as an antibacterial agent after water absorption treatment with an absorbent;
We observed the occurrence of bad odors. The result is the second
As shown in the figure. In the figure, the mouth did not process anything, +
◇ is treated with water absorption using an absorbent, and then sodium benzoate is added as an antibacterial agent. △ is treated with water absorbed using an absorbent, and then potassium sorbate is added as an antibacterial agent. , respectively.

From this result, it was found that the addition of sodium benzoate or potassium sorbate as an antibacterial agent suppressed odor generation.

Table 1 shows the results measured with a detection tube after being left for 2 days.

Table 1 As shown in Table 1, sodium benzoate 1 is used as an antibacterial agent.
．． It was found that by adding 0%, it was possible to suppress the generation of acetaldehyde, methyl mercaptan, and ethyl mercaptan, which are considered to be the main components of bad odors.

Furthermore, FIG. 3 shows the relationship between the cumulative amount of leachate and the number of days of storage, regarding the effect of suppressing leaching from kitchen waste needles by adding an antibacterial agent.

As can be seen from FIG. 3, in the case where the antibacterial agent was added, no leaching water was observed even after 5 days, and only some leaching was observed after 15 days.

This is because the addition of an antibacterial agent suppresses the proliferation of microorganisms, making it difficult for microorganisms to destroy the tissues of vegetables in kitchen waste.

In Figure 3, ○ indicates that the crushed kitchen waste was not treated in any way after solid-liquid separation, and △ indicates that the crushed kitchen waste was subjected to water absorption treatment by adding 1.3% absorbent after solid-liquid separation. After solid-liquid separation of the crushed kitchen waste, 1.3% of an absorbent was added for water absorption treatment, and 1.0% of sodium benzoate was added as an antibacterial agent. (Note) In the table, the unit is PPM. .

and (2) one in which potassium sorbate was added as an antibacterial agent after water absorption treatment with a water absorbing agent. and,
Each sample weighed 140 g.

In addition, in FIG. 1, when the water level in the regulating tank decreases and reaches a predetermined water level, the pump stops. The screw decanter centrifugal separator 1 is configured to stop after a predetermined period of time has passed after stopping. Further, the water absorbing agent is supplied by operating the waste water supply pump, and after a predetermined time has elapsed, the water absorbing agent is injected by air from the valve 23 and the compressor 24.

Furthermore, when the rotation of the screw decanter centrifugal separator 1 is stopped, the supply of the water absorbing agent is also stopped.

Further, in this embodiment, the water absorbing agent 21 is press-injected by the compressor 24, but it may be allowed to fall naturally into the kneading machine 25.

Furthermore, the kneader operates in conjunction with the operation of the waste water supply pump;
It is designed to stop after the kneader is completely discharged.

In the embodiment shown in FIG. 1, a screw decanter type centrifugal separator was used as the centrifuge, but the purpose of the present invention can be achieved as long as the centrifugal separator can separate solids and liquids by centrifugal force. It is not limited to.

FIG. 4 shows yet another embodiment of the present invention, in which a vibrating screen 30 is used as a solid-liquid separator.

The vibrating screen 30 is a container 31 in which a sieve screen 32 is arranged.
, a vibration motor 33 provided at the lower part of the container 31 , a spring 34 connecting the container 31 and the pedestal 35 , an intake port 36 for supplying crushed kitchen waste water into the container 31 , and a solid matter discharge port 37 . and a separated liquid outlet 38.

Further, the solid matter discharge port 37 is connected to the kneading machine 40 via a pipe line 39.
I am in touch with you. This kneading machine 39 is similar to the kneading machine 2 in FIG.
5, and is equipped with a motor 41.

On the other hand, a quantitative feeder 43 having a motor 42 is attached to the drug hopper 20 . This quantitative feeder 43 supplies a predetermined antibacterial agent-containing water absorbing agent 21 to the kneading machine 40 via a conduit 44 .

In this embodiment, when the crushed kitchen waste water A stored in the adjustment tank reaches a predetermined water level, the vibrating screen 30 is activated. When the vibrating screen 30 reaches a preset vibration frequency, the shredding kitchen waste water A is taken into the vibrating screen 30 through its intake port 36 from the regulating tank, either directly by the pump or via a lightweight tank. Then, the solid matter B is separated from the liquid by the sieve screen 32, and the vibration motor 3
3, the solids are moved in the direction of the solids discharge port 37, and are transferred from the solids discharge port 37 to the kneading machine 40 via the pipe line 39.
supplied to At the same time, the quantitative feeder 43 provided in the drug hopper 20 is operated to feed a predetermined amount of the antibacterial agent-containing water absorbing agent 21 through the conduit 44. After that, the solid material B and the antibacterial agent-containing water absorbing agent 21 are sufficiently mixed by the mixer 40,
It is discharged from the discharge port 45.

In this embodiment as well, the same effects as in the above embodiment can be achieved.

In this example, the supply and stop of the water-absorbing agent and the operation and stop of the kneader were carried out in the same manner as in the example shown in FIG.

Further, in this embodiment, the case where the vibrating screen 30 is used has been explained, but if it is a solid-liquid separator that uses vibration,
Since similar effects can be achieved, the present invention is not limited to this.

Next, a case will be described in which the powdered antibacterial agent 29 and the water absorbing agent 21A are added separately to the crushed solid material B.

In FIG. 5, an antibacterial agent supply pipe 19 is provided separately from the drug supply pipe 18 in FIG. A motor 47 for quantitatively supplying a predetermined amount of antibacterial agent 29
A metering device 46 is provided. This quantitative feeder 46 allows a predetermined amount of the antibacterial agent 29 to be supplied from the antibacterial agent supply pipe 19 to the kneading machine 25 via the discharge pipe 17.

In this embodiment, wastewater A containing crushed kitchen waste is subjected to solid-liquid separation in the same manner as in the screw decanter centrifugal separator 1 shown in FIG.
fall to. During the falling process of the solid material B, or after a predetermined amount of the solid material B has fallen, first, a predetermined amount of antibacterial agent 2 is applied.
9 is pushed out to the discharge pipe 17 by the metering device 46 and added to the solid B, and the solid B and the antibacterial agent 29 are mixed in the kneader 25. As a result, the antibacterial agent 29 is evenly mixed with the interstitial water in the solid material B. After that, the water absorbing agent 21A is supplied from the chemical supply pipe 18 to the compressor 2.
4 and absorbs the interstitial water of the solid material B evenly mixed with the antibacterial agent 29. This prevents dirt from dripping, and the interstitial water in the separated solids evenly mixes the antibacterial agent, suppressing the growth of microorganisms and cleaning the tissue of the vegetables during cooking. can be made more difficult to destroy.

The solids treated in this way are easy to handle because they do not produce sewage, and they are also less likely to rot, so there is no odor or odor.
Does not cause problems such as pests or mold.

In FIG. 6, in addition to the conduit 44 in FIG. 4, an antibacterial agent supply pipe 19 is provided as in FIG. 5. and,
This antibacterial agent supply pipe 19 communicates with an antibacterial agent hopper 28, as shown in FIG. A feeder 46 is provided. This quantitative feeder 46 allows a predetermined amount of the antibacterial agent 29 to be supplied from the antibacterial agent supply pipe 19 to the kneading machine 25 via the discharge pipe 17.

In this embodiment, as in FIG. 4, when the crushed kitchen wastewater A stored in the adjustment tank reaches a predetermined water level, the vibrating screen 30 is activated. When the vibrating screen 30 reaches a preset vibration frequency, the shredding kitchen waste water A is taken into the vibrating screen 30 through its intake port 36 from the regulating tank, either directly by a pump or via a lightweight tank. Then, the solid matter B is separated from the liquid by the sieve screen 32, and is moved to the solid matter discharge port 3 by the action of the vibration motor 33.
7 directions, solids discharge port 37 and pipe llll39
The mixture is supplied to the kneader 4o via the kneader 4o. At the same time, a predetermined amount of the antibacterial agent 29 is extruded by the metering device 46 and added to the solid B to mix the solid B and the antibacterial agent 29 in the kneader 4°. As a result, the antibacterial agent 29 is evenly mixed with the interstitial water in the solid material B. Thereafter, the metering supply device 43 provided in the drug hopper 2° is operated to supply a predetermined amount of the water-absorbing agent 21A through the conduit 44. after that,
In the mixer 40, the interstitial water of the solid material B evenly mixed with the antibacterial agent 29 is absorbed. This prevents dirt from dripping, and the interstitial water in the separated solids evenly mixes the antibacterial agent, suppressing the growth of microorganisms and cleaning the tissue of the vegetables during cooking. can be made more difficult to destroy.

Next, a case will be described in which the antibacterial agent 49 and the water absorbing agent 21A in solution form are added to the crushed solid material B.

In FIG. 7, an antibacterial solution supply pipe 47 is provided separately from the drug supply pipe 18 in FIG. A predetermined amount of an antibacterial agent 49 in the form of a solution (for example, a concentration of about 80X (W/V)) is stored inside, and can be supplied in a fixed amount by a metering pump 50.

In this embodiment, wastewater A containing crushed kitchen waste is subjected to solid-liquid separation in the same manner as in the screw decanter centrifugal separator 1 shown in FIG.
fall to. During the falling process of the solid material B, or after a predetermined amount of the solid material B has fallen, first, a predetermined amount of the antibacterial agent 49 in solution form is pushed out to the discharge pipe 17 by the metering pump 50, and the solid material B is injected into the solid material B. The solids B and the antibacterial agent 49 are mixed in the kneader 25. As a result, the antibacterial agent 49 is evenly mixed with the interstitial water in the solid material B.

Thereafter, the water absorbing agent 2IA is sprayed from the drug supply pipe 18 by the compressor 24, and absorbs the interstitial water of the solid material B evenly mixed with the antibacterial agent 29. This prevents dirt from dripping, and the interstitial water in the separated solids evenly mixes the antibacterial agent, suppressing the growth of microorganisms and cleaning the tissue of the vegetables during cooking. can be made more difficult to destroy.

The solids treated in this way are easy to handle because they do not produce sewage, and they are also less likely to rot, so there is no odor or odor.
Does not cause problems such as pests or mold growth.

In FIG. 8, an antibacterial agent solution supply pipe 47 is provided in addition to the pipe line 44 in FIG. 4, as in FIG. 7. The antibacterial agent solution supply pipe 47 communicates with an antibacterial agent tank 48, as shown in FIG.
Solution inside (for example, concentration of about 80χ (W/V))
A predetermined amount of antibacterial agent 49 is stored therein, and a metered amount can be supplied by a metering pump 50.

In this embodiment, as in FIG. 4, when the crushed kitchen wastewater A stored in the adjustment tank reaches a predetermined water level, the vibrating screen 30 is activated. When the vibrating screen 30 reaches a preset vibration frequency, the shredding kitchen waste water A is taken into the vibrating screen 30 through its intake port 36 from the regulating tank, either directly by a pump or via a lightweight tank. Then, the solid matter B is separated from the liquid by the sieve screen 32, and is moved to the solid matter discharge port 3 by the action of the vibration motor 33.
The solids are moved in seven directions and supplied from the solids discharge port 37 to the kneader 40 via the pipe line 39. At the same time, a predetermined amount of the antibacterial agent 49 in solution form is pushed out by the metering pump 50,
The antibacterial agent 49 is added to the solid material B, and the solid material B and the antibacterial agent 49 are mixed in a kneader 40 . As a result, the antibacterial agent 49 is evenly mixed with the interstitial water in the solid material B. After that,
The quantitative feeder 43 provided in the drug hopper 20 is operated to feed a predetermined amount of the water-absorbing agent 21A through the conduit 44.

Thereafter, in a kneader 40, the interstitial water of the solid B evenly mixed with the antibacterial agent 49 is absorbed. This prevents dirt from dripping, and the interstitial water in the separated solids evenly mixes the antibacterial agent, suppressing the growth of microorganisms and cleaning the tissue of the vegetables during cooking. can be made more difficult to destroy.

In each of the above embodiments, the centrifugal separation method and the vibrating sieve method have been described as solid-liquid separation methods, but a fine screen method may also be used.

〔Effect of the invention〕

As described above, according to the solid-liquid separated crushed kitchen waste treatment method according to claims 1 to 4, the antibacterial agent is evenly mixed by the pore water existing between each solid substance, and the pore water is removed. The water-absorbing polymer material can reliably absorb the soil and prevent it from dripping, and the interstitial water in the separated solids evenly mixes the antibacterial agent, suppressing the growth of microorganisms. The tissues of vegetables in kitchen waste can be made difficult to be destroyed by microorganisms. As a result, bad odor occurs,
Antibacterial agents suppress the growth of microorganisms that cause kitchen waste, preventing the leaching of kitchen waste and the generation of bad odors over a long period of time.
It becomes possible to prevent the generation of mold.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram for applying a method for treating shredded kitchen waste subjected to solid-liquid separation according to an embodiment of the present invention. Figure 2 shows the experimental results in the example shown in Figure 1.
It is a graph showing the relationship between the odor sensor indication value and the number of days that have passed. Figure 3 shows the experimental results in the example shown in Figure 1.
It is a graph showing the relationship between cumulative leachate amount and storage days. 4 to 8 are explanatory diagrams for applying a method for treating shredded kitchen waste separated into solid and liquid according to another embodiment of the present invention. [Explanation of symbols of main parts] 1...Screw decanter type centrifuge A...Wastewater containing crushed kitchen waste B...Separated solids C...Separated liquid 21...Antibacterial waste Water absorbing agent 21A...Water absorbing agent 25°0...Kneading machine 29...Powdered antibacterial agent 30...Vibrating screen 49...Solution antibacterial agent. (Vibration sieve machine) Hayabusa 4-Kyū・te-ka-zu-ku-dori-shichi-kari <'a)

Claims (4)

[Claims] (1) Solid-liquid separated crushed kitchen waste characterized by solid-liquid separation of wastewater containing crushed kitchen waste and mixing an antibacterial agent and a water-absorbing polymer substance with the separated solids. Processing method. (2) The method for treating shredded kitchen waste according to claim 1, characterized in that a powdered antibacterial agent and a water-absorbing polymeric substance are mixed in advance. (3) Solid-liquid, characterized in that wastewater containing crushed kitchen waste is separated into solid-liquid, an antibacterial agent is mixed into the separated solid, and then a water-absorbing polymeric substance is mixed into this mixture. A method for treating separated shredded kitchen waste. (4) The method for treating shredded kitchen waste according to claim 3, wherein the antibacterial agent is a powder or a solution.