JPH08112582A - Crude refuse treating device - Google Patents

Abstract

PURPOSE: To assure the stable use of packing materials without exchange over a long period by using small grains of foamed resins as the packing materials of a crude refuse treating device which mixes the crude refuse and the packing materials and decomposes the crude refuse by the effect of microorganisms within a treating vessel. CONSTITUTION: The decomposition treatment of the crude refuse discharged in home, etc., is executed in the crude refuse treating device 1 for making the crude refuse non-polluting by throwing the crude refuse 11 in the treating vessel 3 in which the packing materials 10 are housed, then rotating an agitating device 5 at every prescribed interval for a prescribed time to agitate the packing materials 11 and to ventilates in the treating vessel 3 by ventilation 9. In such a case, the small grains of the foamed resins are used as the packing materials 10. Foams of synthetic resins, such as polystyrene and polyethylene, sized about 1 to 10mm in diameter are used as the foamed resins. The malodors generated at the time the crude refuse decomposes are decreased by mixing materials, such as zeolite and active carbon, having high adsorptivity with the foamed resins.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food waste processing apparatus for processing food waste discharged at home to render it harmless.

[0002]

2. Description of the Related Art Generally, household garbage is collected and treated collectively by local governments, but it requires large-scale processing equipment and is costly. There is also a problem of, and it has become a social problem.

[0003] Recently, therefore, there has been proposed a domestic food waste processing apparatus in which food waste is stored in a processing tank together with a filler, and the food waste is decomposed by the action of microorganisms.
Various products are commercially available.

For example, as an example thereof, Japanese Patent Laid-Open No. 572/1993
The one described in Japanese Patent Publication No. 65 is known. This product accommodates filler such as sawdust and raw garbage in the treatment tank, stirs the filler and raw garbage in the treatment tank with stirring blades, ferments the raw garbage to decompose it, and treats it. Is.

In this type of food waste treatment apparatus, when the food waste is decomposed by the action of microorganisms, it may be decomposed aerobically or anaerobically, but it has a high decomposition rate and a bad odor. In general, a method of aerobically decomposing in the presence of air is often used for the reason that the generation of methane is small.

In this type of apparatus, raw garbage is mixed with a filler such as sawdust to adjust the water content, and in order to activate the aerobic microorganisms, the filler is agitated to allow air inside. In addition to supplying the air, the air in the tank is ventilated to always supply fresh air.

[0007]

However, in this type of food waste treating apparatus, since the organic material such as sawdust is used as the filler, the filler is decomposed by microorganisms and the amount thereof is reduced. Fibrous material that is difficult to decompose remains and hardens by containing water, and loses the function of mixing with food waste and promoting smooth decomposition.

[0008] Therefore, if the same filler is used forever, the load on the motor will be impaired and the food waste and the filler will not be mixed properly, so that the food waste will not come into contact with moisture and air smoothly, It also causes a bad smell. Therefore, it is necessary to regularly replace the filler and always use a fresh filler.

The present invention has been made in view of the above circumstances, and the raw material is not decomposed and can be stably used for a long period of time without exchanging the filler. It is intended to provide a processing device.

[0010]

According to the present invention, therefore, in a food waste processing apparatus for mixing food waste with a filler and decomposing the food waste by the action of microorganisms in a treatment tank, foaming is performed as the filler. It is characterized by using small particles of resin.

FIG. 1 shows an apparatus 1 for treating garbage according to the present invention. Reference numeral 2 denotes an apparatus main body, and a processing tank 3 is provided in the apparatus main body 2. Reference numeral 4 is a lid that closes the upper part of the processing tank 3.

Reference numeral 5 denotes an agitating device provided in the processing tank 3, and a plurality of agitating blades 7 are attached to a rotating shaft 6 so that the driving motor 8 can rotate the processing tank 3 with respect to the processing tank 3. Has become.

Reference numeral 9 is a ventilation device for discharging the air in the processing tank 3 to the outside and replacing the air in the processing tank 3.

Thus, the filler 10 is housed in the processing tank 3,
Put the garbage 11 there. Then, at every predetermined time interval, the drive motor 8 rotates the stirring device 5 for a predetermined time to stir the filler 10.

It is appropriate that the time for stirring the filler 10 is about 3 to 10 minutes, and the interval is about 10 to 120 minutes.

Further, the ventilation device 9 is operated to ventilate the air in the processing tank 3. The ventilation device 9 may be operated at all times, but it is preferable to operate the ventilation device 9 except during the operation of the stirring device 5 in order to reduce power consumption. The ventilation device 9 can also be operated intermittently.

Thus, in the present invention, small particles of foamed resin are used as the filler 10 contained in the processing tank 3. As the foamed resin, a foamed body of synthetic resin such as polystyrene, polyethylene, polypropylene and polyurethane is suitable.

The foaming form of the foam may be either independent foaming or continuous foaming, but small pieces of garbage do not enter the inside of the foam and water and air contact the garbage through the skin layer on the surface. Independent foaming is preferable because it is easy to do.

As a method of forming small particles of foamed resin,
The synthetic resin may be foamed and molded into beads, or the foam may be crushed into small particles. The size of small particles is 1 to 10 mm in diameter
The degree is suitable, and more preferably about 2 to 6 mm. All the small particles may have a uniform diameter, or particles having different diameters may be mixed and used.

Further, by mixing the small particles of the foamed resin with a highly adsorptive material such as zeolite or activated carbon and using it as the filler 10, it is possible to reduce the malodor generated when the food waste is decomposed.

[0021]

[Examples] 40 liters of the filling material 10 was stored in the treatment tank 3, and 1 kg of garbage was put in each day to perform a treatment test on the garbage. Then, as an example, Styrofoam beads having a diameter of 4 mm were used as the filler 10. In addition, as a comparative example, sawdust was used as the filler 10 in the conventional manner.

Thus, the amount of the filler 10 was periodically measured, and the appearance of the filler was judged visually and by touch. Further, the filler 10 was sampled and the water content was measured. The results are shown in FIGS. 2 and 3.

As shown in FIG. 2, in the comparative example using the sawdust as the filler 10, the capacity is decreased with time due to the decomposition of the sawdust, and the amount is reduced to about half after 4 months. is decreasing.

On the other hand, in the embodiment, the capacity is reduced by about 15% at the beginning of the test when the beads are tightened by the external force and the filler 10 is settled, but after that, the capacity is almost changed. Absent.

Further, as shown in FIG. 3, in the comparative example using sawdust, the moisture generated by the decomposition of food waste is contained in the small amount of the filler 10, so that the moisture content of the filler 10 increases. However, since a large amount of water is contained in the fibrous material which is not easily decomposed, the fibrous material is gradually solidified to form an inhomogeneous mass.

On the other hand, in the embodiment using the styrofoam beads, the water is easily evaporated from the surface of the beads, and the water content does not increase. Further, the filler 10 does not harden forever, and remains in a dry state.

[0027]

According to the present invention, since the small particles of the foamed resin are used as the filler 10, the filler 10 itself is not decomposed together with the garbage 11, and the capacity is constantly reduced. In addition, the moisture content does not fluctuate because the filler 10 is in a constant state, and the filler 10 does not solidify to form a lump.

Therefore, according to the present invention, when the garbage 11 is put into the filling material 10 and decomposed by the action of microorganisms, the filling material 10 is always maintained in an appropriate state, and the filling material 10 is not replaced.
The garbage 11 can be efficiently decomposed and processed over a long period of time.

[Brief description of drawings]

FIG. 1 is a central longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is a graph showing a change in the capacity of the filler in a food waste treatment test.

FIG. 3 is a graph showing changes in the water content of the filler in a food waste treatment test.

[Explanation of symbols]

 1 Garbage Disposal Equipment 3 Processing Tank 10 Filling Material 11 Garbage Waste

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masami Hata 1-20-5 Tenma, Kita-ku, Osaka City, Osaka Prefecture Zojirushi Mahobin Co., Ltd.

Claims (1)

[Claims] 1. A food waste treatment apparatus which mixes food waste (11) with a filler (10) and decomposes the food waste (11) in a treatment tank (3) by the action of microorganisms. A device for treating food waste, characterized in that small particles of foamed resin are used as the material (10).