JP2003039097A - Garbage treatment method and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a treatment method for treating garbage discharged from kitchens of average families or of business use whereby the treating cost is decreased; and a treatment apparatus used therefor and having a simplified structure. SOLUTION: This treatment method uses an apparatus which has a cleaning means for cleaning liquidized garbage and kitchen wastewater by bringing them into contact with aerobic microorganisms attached to a support. In an aerobic tank 11 of the apparatus, there is an air diffusion pipe-cum-bottom effluence prevention net 13 comprising an air diffusion pipe 18 and a bottom effluence prevention net 19 united therewith. Thus, the treatment apparatus can be simplified and the treating cost can be decreased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating food waste and a device for purifying food waste, kitchen wastewater and the like generated in kitchens of general households.

[0002]

2. Description of the Related Art Conventionally, as a method and apparatus for treating food waste utilizing aerobic microorganisms, Japanese Unexamined Patent Publication (Kokai) No. 11-641 (hereinafter referred to as "A") discloses a method and apparatus for treating food waste. It is disclosed.

Hereinafter, a method for treating food waste and a device therefor disclosed in Japanese Patent Laid-Open No. A-1 will be described with reference to the drawings.

FIG. 3 is a sectional view of the essential parts of a conventional food waste processing apparatus.

As shown in FIG. 3, a conventional food waste treatment apparatus utilizing aerobic microorganisms has an aerobic tank 1 for purifying liquefied food waste and kitchen wastewater, and an upper portion of the aerobic tank 1. Inflow pipe 2 for letting the liquid to be treated connected to the inside of the aerobic tank 1
An air pump 3 for supplying air into the aerobic tank 1, a carrier 4 installed in the aerobic tank 1 to which aerobic microorganisms for purifying the liquid to be treated are attached, and an upper portion in the aerobic tank 1. And an upper outflow prevention net 5 installed horizontally in the aerobic tank 1 to prevent outflow of the carrier 4, a lower outflow prevention net 6 installed horizontally in the lower part of the aerobic tank 1 to prevent outflow of the carrier 4, and supplied by an air pump 3. It comprises an air diffuser pipe 7 that brings air into the aerobic tank 1, and an outflow pipe 8 that is connected to a lower portion of the aerobic tank 1 to let the treated liquid out of the aerobic tank 1. Reference numeral 9 in the figure is an arrow indicating the swirling flow generated in the aerobic tank 1 by the air discharged from the air diffuser 7 and the flow of the carrier 4.

As the liquid to be treated, liquefied food waste and kitchen drainage are used.

[0007] In the food waste processing device having the above-mentioned structure, liquefied food waste and kitchen wastewater are introduced into the aerobic tank 1.
In the aerobic tank 1, the air sent from the air pump 3 is discharged from the air diffusing pipe 7 and rises in the aerobic tank 1, so that a swirling flow is generated in the aerobic tank 1 as shown by an arrow 9. ing. With this swirling flow, the carrier 4 flows between the upper outflow prevention net 5 and the lower outflow prevention net 6 as shown by an arrow 9. At this time, the organic matter in the liquid to be treated that has flowed into contact with the carrier 4 and the air causes the aerobic microorganisms adhering to the carrier 4 to oxidatively decompose the organic matter and perform the purification treatment.

The treated liquid to be treated flows out of the aerobic tank 1 through the outflow pipe 8.

[0009]

However, in the configuration of the above-mentioned conventional food waste processing apparatus, since it is necessary to separately install the air diffuser 7 separately, the structure of the aerobic tank 1 becomes extremely complicated. Had. Further, in order to make the scattered carriers 4 flow, the air diffuser 7 must be installed on the entire bottom surface of the aerobic tank 1, and therefore the aerobic tank 1 is further provided.
However, there is a problem in that the structure becomes complicated and the initial cost significantly increases. Further, since the air diffuser 7 is also installed in the outflow pipe 8, the outflow pipe 8 is likely to be blocked, which adversely affects the purification process and causes a problem that the size of the device becomes large. Further, since the structure of the aerobic tank 1 is complicated, a high degree of management and complicated operation are required, and there is a problem that running cost remarkably increases.

An object of the present invention is to reduce the size and cost of the processing apparatus in such a garbage processing apparatus.

[0011]

Means for Solving the Problems In order to achieve the above object, the present invention provides a garbage treatment including a purification step of bringing liquefied garbage or kitchen wastewater into contact with aerobic microorganisms adhering to a carrier for purification. Let's do it.

According to the present invention, it is possible to obtain a method for treating food waste which has a simple and compact treatment apparatus and is low in cost.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a method for treating food waste, which comprises a purification step of contacting liquefied food waste or kitchen wastewater with aerobic microorganisms adhering to a carrier for purification. Therefore, the purification process can be simplified and downsized, and the cost can be reduced.

According to a second aspect of the present invention, in the method for treating food waste according to the first aspect, in the cleaning step, the carrier is made to flow by the air discharged from the air diffusing pipe installed in the cleaning step. Since it has a flow process, it has an effect that the purification process can be simplified and downsized.

The invention according to claim 3 of the present invention is the method for treating food waste according to claim 1, wherein the purification step causes the carrier to flow between the outflow prevention nets installed in the purification step. This has the effect of simplifying and downsizing the purification process.

According to a fourth aspect of the present invention, in the method for treating food waste according to the first aspect, in the purification step, the diffuser pipe and the lower outflow prevention network are integrated in the outflow prevention network in the purification step. The purification process can be simplified and miniaturized.
In addition, it has the effect of reducing the cost.

The invention according to claim 5 of the present invention is a food waste treatment apparatus having a cleaning means for cleaning liquefied food waste and kitchen wastewater by bringing them into contact with aerobic microorganisms adhering to a carrier, The aerobic tank can be simplified and downsized, and the cost can be reduced.

According to a sixth aspect of the present invention, in the food waste treating apparatus according to the fifth aspect, the purifying means causes the carrier to flow by the air discharged from the air diffusing pipe installed in the aerobic tank. Has a fluidizing means for
This has the effect of simplifying and downsizing the aerobic tank.

According to a seventh aspect of the present invention, in the food waste treating apparatus according to the fifth aspect, the purifying means causes the carrier to flow between the outflow prevention nets installed in the aerobic tank. The aerobic tank can be simplified and downsized.

According to an eighth aspect of the present invention, in the food waste treating apparatus according to the fifth aspect, the purification means includes an air diffuser pipe and a lower outflow prevention net in the outflow prevention net in the aerobic tank. Since it is integrated, the aerobic tank can be simplified and downsized, and
It has the effect of reducing costs.

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of an essential part of a food waste processing apparatus according to an embodiment of the present invention, and FIG. 2 is a perspective view of an air diffuser / lower outflow prevention net in the food waste processing apparatus. is there.

In FIG. 1, reference numeral 10 is an inflow pipe, which is connected to the aerobic tank 11. Aerobic tank 11 is FRP or FR
Materials such as synthetic resin such as TP, metal, or concrete that has been subjected to water leakage prevention treatment are used. The air sent from the air pump 12 is discharged from the air diffuser / lower outflow prevention net 13 in the aerobic tank 11 so that it is always in an aerobic state. The lower outflow prevention mesh in the air diffuser / lower outflow prevention mesh 13 is made of a material such as metal or plastic having an opening of about 5 mm so that the carrier 14 does not flow out to the lower part of the aerobic tank 11. There is. As the mesh opening becomes smaller than 5 mm, the inflowing solid matter is more likely to be captured by the mesh of the air diffuser / lower outflow prevention mesh 13, and the mesh tends to be blocked. When 14 is worn, it tends to flow out more easily than the mesh, which is not preferable.

On the other hand, a material such as vinyl chloride, polypropylene or polyethylene is used for the air diffuser inside the air diffuser / lower outflow prevention net 13. Reference numeral 14 is a carrier installed in the aerobic tank, on the surface of which aerobic microorganisms are attached, and in contact with the wastewater sent to the aerobic tank 11, purification by taking in organic matter in water and oxidizing and decomposing it. Processing is performed.

The carrier 14 is a cube, rectangular parallelepiped, columnar body or spherical body having a size of about 7 to 10 mm, and is made of urethane foam, plastic, synthetic resin, hollow ceramic,
Materials such as pumice that easily attach to microorganisms are used.
Its specific gravity is 0.9-1.8 so that it can flow easily in water.
It is a degree. If the specific gravity is less than 0.9, it becomes difficult for the carrier to flow in water, and the carrier 14 causes the upper outflow prevention mesh 1
There is a tendency to block the mesh while being pressed against 5, and if it is greater than 1.8, it becomes difficult to flow in water, and a large air pump is required to make it flow, so cost savings In addition, it is difficult to maintain the optimum dissolved oxygen concentration, and both are not preferable.

Reference numeral 15 denotes an upper outflow prevention net, which is made of a material such as metal or plastic having an opening of about 5 mm so that the carrier 14 does not flow out to the upper part of the aerobic tank 11. Reference numeral 16 is an outflow pipe.

Next, in FIG. 2, reference numeral 12 is an air pump, which supplies air necessary for purification treatment to the air diffuser pipe / lower outflow prevention net 13 through an air pipe 17. Reference numeral 18 denotes an air diffuser inside the air diffuser / lower outflow prevention mesh 13, which is installed so as to surround the periphery of the air diffuser / lower outflow prevention mesh 13.

A material such as vinyl chloride, polypropylene or polyethylene is used for the air diffuser 18. Reference numeral 19 denotes a lower outflow prevention net in the air diffuser / lower outflow prevention net 13, which is made of a material such as metal or plastic having an opening of about 5 mm.

With respect to the food waste processing apparatus configured as described above, a food waste processing method will be described below with reference to FIGS. 1 and 2.

Liquefied food waste and kitchen wastewater flow into the inflow pipe 1
It is supplied to the aerobic tank 2 from 0. In the aerobic tank 11, the air sent from the air pump 12 is discharged from the air diffuser / lower outflow prevention net 13, and the aerobic state is always maintained. The organic substances are taken in, oxidatively decomposed and purified. Here, since the air diffuser 18 and the lower outflow prevention net 19 are integrated to form the air diffuser / lower outflow prevention net 13, there is no need to install a separate air diffuser at the bottom of the aerobic tank 11.
The structure of the aerobic tank 11 can be remarkably simplified.

Further, since the air diffuser 18 is installed so as to surround the periphery of the air diffuser / lower outflow prevention net 13, the inside of the aerobic tank 11 can be constantly aerated, and the aerobic tank 1
The carriers 14 scattered in 1 can be always flowed.

Furthermore, since it is not necessary to install an air diffuser near the outflow pipe 16, the outflow pipe 16 can be constantly purified without being blocked.

[0033]

As is apparent from the above description, the method for treating food waste of the present invention can remarkably simplify the structure of the aerobic tank by integrating the air diffuser and the lower outflow prevention net. In addition, the initial cost can be significantly reduced. Also, since it is not necessary to install an air diffuser near the outflow pipe,
The outflow pipe can always be purified in the aerobic tank without being blocked.

For this reason, the food waste processing apparatus is small in size as a whole, saves cost and energy, does not require a place for installation, and can be selected, and the processing apparatus can be constituted by only a unit device, so that complicated operation is possible. Thus, it is possible to realize a food waste processing device that can perform food waste processing with high efficiency without the need for management and management and that is suitable for mass production at low cost.

[Brief description of drawings]

FIG. 1 is a sectional view of a food waste processing device according to an embodiment of the present invention.

FIG. 2 is a perspective view of an air diffusing pipe and a lower outflow prevention net in the same garbage processing device.

FIG. 3 is a sectional view of a main part of a conventional food waste processing device.

[Explanation of symbols]

10 Inflow pipe 11 aerobic tank 12 Air pump 13 Air diffuser and lower outflow prevention network 14 Carrier 15 Upper runoff prevention net 16 Outflow pipe 17 Air piping 18 Air diffuser 19 Lower outflow prevention network

Claims (8)

[Claims] 1. A method for treating food waste, comprising a purification step of bringing liquefied food waste or kitchen wastewater into contact with aerobic microorganisms adhering to a carrier for purification. 2. The method of treating food waste according to claim 1, wherein the purification step has a flow step of flowing the carrier by air discharged from an air diffusing pipe installed in the purification step. 3. The method for treating food waste according to claim 1, wherein in the purification step, the carrier is allowed to flow between the outflow prevention nets installed in the purification step. 4. The method of treating food waste according to claim 1, wherein in the purification step, the air diffuser and the lower outflow prevention net are integrated in the outflow prevention net in the purification step. 5. An apparatus for treating food waste, comprising a purifying means for contacting aerobic microorganisms adhering to a carrier to purify liquefied food waste or kitchen wastewater. 6. The garbage processing device according to claim 5, wherein the purifying means has a flow means for causing the carrier to flow by the air discharged from the air diffuser installed in the aerobic tank. 7. The purifying means causes the carrier to flow between the outflow prevention nets installed in the aerobic tank.
The described garbage processing device. 8. The purifying means is one of an outflow prevention network in the aerobic tank,
The food waste processing device according to claim 5, wherein the air diffuser and the lower outflow prevention net are integrated.