JPH08243532A - Garbage waste treating device - Google Patents

Abstract

PURPOSE: To effectively kill the larvae, etc., intruding into a treating vessel. CONSTITUTION: Treating materials 6 are housed in the treating vessel 1. The microorganisms deposited on these treating materials 6 aerobically decompose the kitchen waste thrown into the vessel. The treating materials 6 are heated periodically by a heater 12, by which the temp. thereof is kept at 60 to 70 deg.C. As a result, an insecticidal treatment is executed while the adverse influence on the microorganisms is suppressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating kitchen waste using microorganisms, and in particular, an apparatus for treating kitchen waste that decomposes kitchen waste generated from household kitchens using aerobic microorganisms and the treatment thereof. Regarding the method.

[0002]

2. Description of the Related Art Kitchen wastes (including wastes from the food industry and food and beverage industry) discharged from household kitchens, etc. are separately collected as raw garbage or combustible garbage by local governments, etc. It has been disposed of in a batch by landfill. In such a waste treatment system, a great deal of labor is required for recovery work. Also, a large amount of energy is required for incineration, and a vast landfill site is required for landfill.

Further, in each process of treating garbage, there is a serious social problem in terms of environmental hygiene, such as a bad odor. For this reason, it is considered desirable to dispose of the kitchen waste in the source thereof, that is, in the kitchen or the like of the household, instead of collecting and collectively disposing of it. However, in each source,
It is extremely difficult to secure an incinerator or landfill site for disposal.

[0004] Therefore, conventionally, a kitchen waste treatment device for treating kitchen waste by composting (so-called composting) by utilizing microorganisms has been known, and in recent years, household waste has been commercialized one after another. Has been done.

In this kitchen waste processing apparatus, wood chips such as sawdust containing desired microorganisms are used as a processing material, and the kitchen waste is mixed with the processing material in the processing tank to aerobically ferment. Let Then, by this aerobic fermentation, the kitchen waste is composted to obtain a compost-like product containing sawdust. The obtained compost-like product can be reused as a fertilizer for gardening such as a home garden. Therefore, if this kitchen waste treatment device is used, the treatment can be performed at the source of kitchen waste.

However, with this method, the kitchen waste is only converted into compost-like products, and the waste does not disappear. Therefore, it is not suitable for houses that do not have the ability to dispose of compost-like products such as reuse.

Therefore, a method has been proposed in which kitchen waste is not decomposed into compost-like products but its substantial components are decomposed into low-molecular-weight decomposition products such as water and gas. In this method, the kitchen waste is decomposed aerobically like composting, but at this time, the kitchen waste is almost completely extinguished by decomposing the kitchen waste into water, minerals and gas. You can Therefore, it can be suitably used even when there is no disposal capacity for compost or the like. Such an apparatus is disclosed in, for example, Japanese Utility Model Laid-Open No. 5-88683.

[0008]

Problems to be Solved by the Invention Here, the kitchen waste may be contaminated with eggs such as flies and buds. This is thought to be due to the adherence of vegetables and the like. Therefore, this may cause hatching and larvae in the treatment tank. The occurrence of such a situation is not desirable and requires insecticidal treatment. For insecticidal, spraying of insecticides is considered, and especially insecticides effective for such insecticidal treatment have been proposed.

[0009] However, the treatment with the insecticide is effective only for a short period of time, and is often not very effective. After the pesticide is introduced, it gradually flows out or decomposes and loses its efficacy. Further, the use of a large amount of insecticide has a risk of adversely affecting the treatment itself.
Therefore, it has been desired to effectively prevent hatching of eggs and development of larvae.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a kitchen waste treatment apparatus and method capable of effectively preventing hatching of eggs and generation of larvae by a simple method. And

[0011]

According to the present invention, in a kitchen waste treatment apparatus for treating kitchen waste in a treatment tank containing a treatment material carrying microorganisms, the temperature of the treatment material inside the treatment tank is 60%. It is characterized by having a heating device for heating to ˜70 ° C.

Further, the present invention is characterized by further comprising temperature measuring means for measuring the temperature of the processing material, and controlling heating by the heating device based on the measured value of the temperature measuring means.

Further, the present invention is characterized by further comprising heating timing control means, and heating by the above heating device is periodically performed.

Further, the present invention is characterized by further comprising heating time control means for controlling the time for maintaining the temperature of the treatment material at 60 to 70 ° C.

Further, the present invention is characterized by further having a stirring device for stirring the processing material in the processing tank, and when the heating material is heated by the stirring device, stirring is performed by the stirring device.

Further, according to the present invention, in a kitchen waste treatment method for treating kitchen waste by mixing kitchen waste with a treatment material carrying microorganisms, the temperature of the treatment material is 60 to 70 at a predetermined frequency. It is characterized by heating to ° C transiently to prevent the development of insects.

[0017]

The microorganisms are carried on a treatment material such as sawdust, and a predetermined amount of the treatment material is stored in the treatment tank. When the kitchen waste is mixed with this treatment material, the microorganisms carried on the treatment material decompose the kitchen waste into carbon dioxide gas, water and the like.

Here, in the present invention, the temperature of the processing material during the processing is periodically (for example, about once every 10 days).
To 60-70 ° C. At such a high temperature,
The larvae that hatched die. On the other hand, microorganisms (bacteria) that play a central role in the aerobic decomposition treatment of kitchen wastes are thermophilic bacteria and do not die at about 70 ° C. Therefore, it is possible to perform the insecticidal treatment while maintaining the treatment function by making such a high temperature.

Further, by measuring the temperature and controlling the heating, the temperature can be reliably brought to 60 to 70 ° C. Further, the heating timing control means can automatically perform a periodic heating process such as once every 10 days. Also, from 60
By controlling the time maintained at 70 ° C, effective insecticidal treatment can be performed at an optimum time. Furthermore, by stirring the treatment material during the heat treatment, the whole can be uniformly heated.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of a kitchen waste processing apparatus according to an embodiment. In the processing tank 1, an internal space 2 for processing kitchen waste (garbage) is formed. The top of the processing tank 1 is sealed by a lid 3.
The lid 3 can be removed from the processing tank 1. A paddle-shaped stirrer 4 is provided in the internal space 2. The agitator 4 is held horizontally and rotated by a motor 5.

In the internal space 2 inside the processing tank 1, a processing material 6 carrying desired microorganisms is housed. It should be noted that when processing is being performed, kitchen waste is thrown into the internal space 2 of the processing tank 1, so raw garbage is mixed in the processing material 6.

A porous plate 7 is provided below the processing tank 1 to support the processing material 6 and allow air and water to pass therethrough. A portion of the treatment tank 1 below the perforated plate 7 is formed in a hopper shape, and a drain pipe 8 for draining water accumulated in the bottom portion of the treatment tank 1 is connected to the lowest portion (center of the hopper). ing. Further, an exhaust port 9 is provided in the upper part of the processing tank 1.

A fan 10 is provided in the upper space of the processing tank 1. Also, the intake port of this fan 10
A pre-heater 11 is provided, and when the fan 10 is driven, the pre-heater 11 is also turned on and the hot air is treated.
Supply in.

A heater 12 is provided below the processing material 6 in the processing tank 1, and a temperature sensor 13 is provided above the processing material 6. Further, the heater 12 and the temperature sensor 13 are connected to the control device 14. The controller 14 controls on / off of the heater 12 according to the detection results of the built-in timer 14a and the temperature sensor 13. As the heater 12, various types such as a nichrome wire wound with asbestos can be adopted. Further, the heater 12 may be arranged above the stirrer 4 or may be inserted into the plural processing materials 6.

When the kitchen waste is treated with this apparatus, the treatment material 6 is first put into the treatment tank 1. This processing material 6 is, for example, cedar wood sawdust of a certain size (about several millimeters in diameter), and a predetermined bacterium (aerobic thermophilic bacterium, in the case of aerobically fermenting garbage in the air) , A plurality of types of bacteria that naturally occur in) are pre-loaded. Further, the sawdust is preferably one from which components unsuitable for the growth of microorganisms have been removed to some extent, and a degreased one is usually employed. Further, this degreasing treatment also makes the sawdust porous.

Then, the lid 3 is opened and the garbage to be treated is put into the treatment tank 1. In the usual case, about 40 kg of the processing material 6 is stored in the processing tank 1 and the amount of raw garbage is set to 1 kg / day or less. As a result, the amount of raw garbage, which is the material to be treated, against microorganisms can be kept within a treatable range. In addition, the amount of garbage generated in a household of a general family of four is about 700 g, and the garbage disposal of a family of four is possible with a processing device having such a capacity. When the amount of raw garbage to be treated is increased, the treatment tank 1 may be enlarged to increase the amount of the treatment material 6 accommodated therein.

Since the processing material 6 has the above-mentioned particle diameter, the voids are retained when it is deposited. For this reason,
Air is circulated in the treatment material 6, and the microorganisms carried by the treatment material 6 are kept aerobic. Therefore, the aerobic microorganisms carried on the processing material 6 aerobically decompose the supplied garbage. That is, various organic substances that constitute garbage are made into low molecular weight compounds, and finally decomposed into gas, water, inorganic salts and the like. Many of the microorganisms are preliminarily carried on the treatment material 6, but other filamentous fungi, yeasts, actinomycetes and the like are also included.

Thus, the raw waste is treated by mixing the raw waste with the treatment material 6, but the raw waste is in contact with the treatment material 6 only by simply adding the raw waste. Further, the treatment material 6 is compacted due to the accumulation, and the air flow is deteriorated. Therefore, the agitator 4 should be used for about 4 to 5 minutes a day.
Is driven, the treatment material 6 is stirred, and this is cut back. Also,
Air is also supplied by this stirring.

In the present embodiment, the processing material 6 is heated by the heater 12 about once every 10 days. This heating is performed so that the treatment material is at 60 to 70 ° C. That is, at a temperature of 60 ° C. or higher, the eggs are not killed, but the hatched larvae are killed. On the other hand, bacteria that decompose the kitchen waste are thermophilic bacteria and can withstand temperatures up to about 70 ° C. Therefore, the control device 14 controls the heating by the heater 12 so that the processing material 6
By setting the temperature of 1, that is, the temperature of the larvae mixed in the treatment material 6 to 60 to 70 ° C., the insecticidal treatment can be performed without adversely affecting the decomposition treatment of the kitchen waste.

Further, in general, for hatching of eggs of flies and nymphs,
Since it takes about 10 days, heat treatment about once every 10 days enables efficient insect killing. It should be noted that if the heat treatment is performed to this extent, the power consumption required for this heat treatment is very small.

The control device 14 has a timer 14a therein and automatically performs a heating process once every 10 days. Therefore, it is possible to prevent forgetting this heat treatment, and to perform a reliable insecticidal treatment.

The heating by the heater 12 is performed by the processing material 6
By keeping the temperature at 60 ° C or higher for about 10 minutes, the insecticidal treatment can be completed. Therefore, the control device 14
Indicates that the temperature above 60 ° C is 1 from the output of the temperature sensor 13.
When it is confirmed that the heating has continued for 0 minutes, the heating by the heater 12 is ended. Also in this case, the timer 14a should be used.

In this way, a reliable insecticidal treatment can be performed by a very simple method of heating with the heater 12.

Further, for the growth of microorganisms, it is necessary that the temperature is above a predetermined level. Therefore, in the present embodiment, the control device 14 controls the heating of the heater 12 according to the output of the temperature sensor 13 so that the temperature of the processing material 6 falls within a predetermined range (about 30 to 50 ° C.). As a result, it is possible to prevent the activity of microorganisms from decreasing due to the decrease in temperature. In particular, heating for insecticidal treatment
It is about once every 10 days, and heating is not normally performed. Therefore, by commonly using the heater 12 and the temperature sensor 13 for normal temperature control, the device can be effectively used and the cost increase of the entire device can be suppressed.

Further, it is preferable that the controller 14 controls the motor 5 so that the agitator 4 causes the agitator 4 to perform the agitation when the heater 12 performs the heat treatment for the insecticidal treatment. As a result, the heat treatment at 60 to 70 ° C. can be performed on the entire treated material 6, and an effective insecticidal treatment can be performed.

[0036]

As described above, according to the kitchen waste treatment apparatus of the present invention, the treatment material is heated to 60 to 70 ° C by the heating means. Therefore, it is possible to perform effective insecticidal treatment with a simple device while maintaining the function of treating kitchen waste by microorganisms.

Further, by controlling the temperature, the sterilization process can be made more reliable and efficient. Furthermore, by using the heating timing control means, it is possible to automatically carry out the periodic heat treatment and to surely perform the insecticidal treatment. Also, 60
By controlling the time for maintaining at ~ 70 ° C, a reliable insecticidal treatment can be performed. Further, by stirring the treatment material during the heat treatment, the whole material can be uniformly heated, and effective insecticide can be performed.

[Brief description of drawings]

FIG. 1 is a diagram showing a structure of a kitchen waste processing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

1 treatment tank, 2 internal space, 3 lid, 4 stirrer, 5
Motor, 6 treatment materials, 7 porous plate, 8 drainage pipe, 9 exhaust port, 10 fan, 11 preheater, 12 heater,
13 temperature sensor, 14 control device.

Claims (6)

[Claims] 1. A kitchen waste treatment apparatus for treating kitchen waste in a treatment tank containing a treatment material carrying microorganisms, wherein the temperature of the treatment material inside the treatment tank is heated to 60 to 70 ° C. A kitchen waste treatment device having a device. 2. The apparatus according to claim 1, further comprising temperature measuring means for measuring the temperature of the processing material, and controlling heating by the heating device based on the measured value of the temperature measuring means. Characteristic kitchen waste treatment equipment. 3. The kitchen waste treatment device according to claim 1, further comprising a heating timing control means, wherein heating by the heating device is performed periodically. 4. The apparatus according to any one of claims 1 to 3, further comprising a heating time control means for controlling the time for maintaining the temperature of the treatment material at 60 to 70 ° C. Kitchen waste treatment equipment. 5. The apparatus according to claim 1, further comprising a stirring device that stirs the processing material in the processing tank,
A kitchen waste treatment device, wherein stirring is performed by a stirring device when heating is performed by the heating device. 6. A kitchen waste treatment method for treating kitchen waste by mixing kitchen waste with a treatment material carrying microorganisms, wherein the temperature of the treatment material is adjusted to 60 to 70 ° C. at a predetermined frequency. A method for treating kitchen waste, which comprises heating excessively to prevent the generation of insects.