JPH10305268A - Garbage treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decompose most of garbage into water and carbon dioxide without giving out a bad smell to enable its extinction by mixing a mixture of powdery Bacilli natto, carbonized coffee grounds, and sawdust with garbage and agitating them under air supply. SOLUTION: When treating garbage from the home or the like, a mixture of powdery Bacilli natto which are high temperature aerobes, carbonized coffee grounds and sawdust is mixed with garbage, and air is taken in while they are agitated, and then they are aged for the prescribed time, Such a cycle is repeated several times to decompose most of garbage into water and carbon dioxide and extinct it. The garbage is apt to corrode quickly, and the more it becomes acidic, the more it is apt to corrode quickly, and when its acidity is strong, the function of the Bacilli natto is deteriorated. Then in order to preferably increase the pH value to bring it in the neutral direction, a pH conditioner such as powdery calcium silicate is used. The volume ratio of the used coffee grounds and sawdust is not particularly limited, it may be 5-10% carbonized coffee grounds to 90-95% sawdust.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage disposal method for treating garbage from general households and the like to remove most of the garbage with water, carbon dioxide or the like.

[0002]

2. Description of the Related Art Heretofore, garbage from general households, schools, hospitals, restaurants, hotels, businesses, etc. has been mainly collected by local governments and disposed of by incineration or landfill.

[0003]

The conventional incineration method requires a large amount of energy because it contains a lot of water, and the fuel cost is high. Also, the incinerator used is expensive. Maintenance, including repairs, is also difficult, and costs in this area are high. Some municipalities may not be able to secure a place to install an incinerator. There are some places where the processing capacity of incinerators cannot keep up with the increasing amount of garbage. Many municipalities do not have access to the land even when landfilled. There is no doubt that the amount of garbage will continue to increase steadily. Incineration and landfill can also cause environmental degradation. In terms of effective use of resources, this is never a good practice.

[0004]

When garbage is processed by the garbage processing method according to claims 1, 2, and 3, natto bacteria, an aerobic thermophilic bacterium, converts most of the garbage into water and carbon dioxide. Decompose. In addition, natto produces a high respiratory heat during activity,
Much of the decomposed water and carbon dioxide will be released. For this reason, the remaining portion is small. What remained until the end,
It can also be used as fertilizer. As a result of the treatment at high temperature, various germs that adversely affect the growth of the plant are killed.
Even if the residue is incinerated or landfilled, the amount is small. For this reason, the above-mentioned problems concerning incineration and landfill that local governments in various places have can be solved. In the case of the processing method according to the second aspect, since the PH adjusting material brings the garbage to the neutral direction, the garbage is less likely to rot.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The inventor of the present invention has already developed a garbage eliminating apparatus capable of eliminating garbage from homes and the like. (Japanese Patent Application No. 7-325199) discloses a cylindrical tower having a roof having openable and closable roofs having air flow holes, and a partition layer having an air flow hole in a middle portion of the cylindrical tower. A stirrer, which is detachably provided, is provided with an airfoil erected on the outer edge of the horizontal rotor in the upper chamber of the partition layer, and takes out waste in the lower chamber of the partition layer. A garbage extinguishing device characterized by having a container. As a result of repeated experiments using the garbage annihilation apparatus, the inventor of the present invention was able to develop an extremely efficient garbage disposal method. Details of the processing method will be described below. In the treatment method according to the present invention, first, powdery natto bacteria, which are aerobic thermophilic bacteria, are used. Next, carbonized coffee grounds is used. The carbonized coffee grounds are very porous. When Bacillus natto is mixed with the carbonized coffee grounds, the Bacillus natto enters the numerous micropores of the carbonized coffee grounds and propagates the carbonized coffee grounds as a house. Next, sawdust is also used. By mixing sawdust without adhesion into garbage,
Prevent garbage from hardening into dumplings. When the garbage solidifies into a dumpling, the air is shut off, and the aerobic natto may be killed.

[0006] It is also desirable to use a pH adjusting material such as powdered calcium silicate. Garbage is easy to rot,
In addition, the more acidic it is, the easier it rots. In addition, if the acidity is strong, the action of Bacillus natto becomes worse. Therefore, in order to raise the PH value and bring it to the neutral direction, a PH adjusting material such as powdered calcium silicate is used. It is desirable that the PH adjusting material is porous. In fact, large quantities of coffee grounds come out of coffee shops, etc., making it difficult to dispose of them. Collecting them may even get you a collection fee. Use the collected coffee grounds while collecting the collection fee. Then, carbonization is performed using a commercially available carbonization device. This carbonizing device is, for example, provided with a screw conveyor inside a drum and heats the outside of the drum with a burner. The coffee grounds are dried while being sent on a screw conveyor, and are finally carbonized and discharged. Carbonized coffee grounds used
The volume ratio of sawdust is as follows. That is, 5% to 10% of carbonized coffee grounds and 90% to 95% of sawdust are set. (The use of carbonized coffee grounds may be increased. However, even if the coffee grounds can be obtained at no cost, carbonized coffee grounds require the cost. Therefore, the use of carbonized coffee grounds is minimal. It is economical to hold down to the limit.)

For the carbonized coffee grounds and sawdust used in such a volume ratio, Bacillus natto is used in the following ratio. That is, the sum of carbonized coffee grounds and sawdust 1
For 1 liter, the amount of Bacillus natto used is 0.001g ~ 2
g. Of these, 0.02 g to 0.1 is preferable.
g, most preferably from 0.02 g to 0.03 g.
The mixture of Bacillus natto / carbonized coffee grounds / sawdust having such a mixing ratio is put into, for example, the above-mentioned garbage eliminating apparatus. Alternatively, it is put into a garbage eliminating device such as a stirring drum type such as a ready-mix mixer. Then, stirring is performed while blowing hot air or heating the device with a heater.
Also, 1kg of garbage per 500 liters of the mixture
Charge 60kg. (It may be heated after the garbage is put in.) The stirring is continued for 30 minutes to 180 minutes, and the internal temperature is raised to 20 to 40 degrees. Here, stirring and heating are stopped, and the mixture is left as it is for 3 to 8 hours. If left untreated, the internal temperature will be about 50 degrees after 8 hours, about 60 degrees after 24 hours, and about 75 degrees after 48 hours.

First, the mixture and the garbage are forcibly heated with stirring. When the specified temperature is reached, stirring
The heating is stopped, but the natto is activated to emit respiratory heat and maintain a predetermined high temperature. However, as time passes, the activity of Bacillus natto gradually declines, and the temperature starts to decrease. Therefore, the air is taken in by stirring again before the activity decreases. And
Stop stirring and leave for 6-8 hours. This cycle is repeated forever. In some cases, forced heating may not be necessary. When the air is taken in by stirring, the natto bacteria actively release respiratory heat and may reach a sufficient temperature. It is necessary to keep the air flowing during the processing. It is also conceivable to always use a fan to blow air. As the cycle repeats, the function of Bacillus natto declines, and sometimes it becomes a dumpling. In that case, for example, one third of the total volume may be taken out, a new mixture of the same volume may be added, and the cycle may be restarted.

Factors for maximizing the action of the natto bacteria used in the present treatment method include temperature, air, moisture and nutrition. Since this natto is a thermophilic bacterium,
Higher temperatures work more actively. If the temperature is less than 25 degrees, germs such as spoilage bacteria infest, and the garbage is spoiled, giving off a bad smell. When the temperature is 35 ° C. or higher, various bacteria are killed and the function of Bacillus natto is improved. Therefore, it is very convenient to increase the temperature. However, if the temperature is too high, the water content drops, and on the contrary, the action of Bacillus natto is disturbed. A water content of about 45 to 60% is an environment where natto bacteria can easily work. Therefore, raising the temperature to 60 degrees or more is not preferable because the water content is reduced. Next, since it is an aerobic bacterium, it is necessary to supply sufficient air. For this reason, it is necessary to stir occasionally and to mix in air or to ventilate. The reason why the sawdust is mixed so as not to form a dumpling is to prevent the air from being shut off. Next, as for nutrients for the propagation of fungi, there is no problem in this point because garbage itself is a sufficient nutrient source.

[0010]

[Experimental Example] Experimental Example 1 The inventor of the present invention conducted an experiment on garbage discharged from the inventor's own home. As the apparatus, the above-mentioned garbage eliminating apparatus was used. This is an experiment for 21 days from August 25 to September 14, 1996. 10% by volume of carbonized coffee grounds
Prepare a mixture of 3 g of Bacillus natto per 10 liters of 90% sawdust. Its mixture 2
The cycle of putting 800 g of garbage in kg, stirring for 30 minutes, and allowing to stand for 5 hours and 30 minutes was repeated. And
Until the 18th day, garbage was weighed and put in every day, and the remaining amount was weighed every day to calculate the weight loss. The internal temperature was also measured every day. In addition, the forced heating by the heat source was not performed. Then, on the 15th day, the internal temperature was too low.
g was additionally charged. On the 19th and 20th days, no garbage was charged, and a cycle of stirring and blowing for 5 minutes every 6 hours was repeated. Table 1 shows the results of the experiment. In Table 1, the unit of the input amount, the total input amount, the remaining amount, and the total weight loss is gram. Temperature is in degrees Celsius.

[0011]

[Table 1]

The results of the experiment will be summarized. The total amount of garbage thrown in over 18 days is 16530g,
The total weight loss was 15450 g. The last remaining amount was only 1080 g. The weight loss rate was actually 93.5%.

Experimental Example 2 As a device, a garbage disposal vehicle according to Japanese Patent Application No. 2-417622, which was already filed by OK Planning Institute Co., Ltd., one of the applicants of the present application, was used. This garbage disposal vehicle
A fermentation rotary drum device for mixing garbage with aerobic microorganisms and air in a rotary drum and performing fermentation treatment is installed on a car bed. This survey was for school garbage collected from 10 elementary schools in Kokubunji, Tokyo, from September 30 to October 3, 1996. However, because the school was closed on October 1st on the day of Tokyo citizens, it was collected on October 2 at the cafeteria of the city hall.
The garbage for January 1 was targeted. The menu for lunch was as follows.

As the mixture of Bacillus natto, carbonized coffee grounds, sawdust, and calcium silicate, the same mixture as in Experimental Example 1 was used.
Using 300 liters of 00 liters, it was initially charged into the fermentation rotary drum device on a car bed. For the first hour, a hot air of about 200-300 degrees is sent by a burner.
The internal temperature was raised to 60-80 degrees. A total of 111 kg of garbage on the first day was put in while blowing air. Thereafter, a cycle of rotating the rotary drum every 30 minutes for 8 hours was repeated. While repeating the cycle, 2nd day, 3rd day, 4th
On the day, each garbage was collected and put in. The results of the experiment are shown in Table 2. September 30 (Mon)-October 3
A total of 307 kg of garbage was collected and thrown in for four days on Thursday. When the entire remaining amount was taken out on Saturday, October 5, it was 405 kg. Since 300 kg of the mixture is the mixture, the amount is subtracted, and the disappeared amount is 202
kg. The weight loss rate is about 50%.

[0015]

[Table 2]

[0016]

When garbage is treated by the garbage disposal method according to the present invention, most of the garbage can be decomposed into water and carbon dioxide and eliminated. Since the treatment is performed at a high temperature, germs such as spoilage bacteria are killed and do not emit a bad smell.
The treated one can be used as a fertilizer because it does not contain various bacteria. Since the water content is reduced, the incineration costs can be reduced even when incinerated. Even when it is used for landfill, it is convenient because the whole amount is reduced.

Claims (3)

[Claims] 1. A mixture of powdered natto bacteria, which is an aerobic thermophilic bacterium, carbonized coffee grounds and sawdust, mixed with garbage, air was taken in with stirring, allowed to stand for a predetermined time, and air was further stirred. A garbage disposal method that repeats a cycle of taking a bed and then letting it sleep for a predetermined time. 2. The garbage disposal method according to claim 1, further comprising adding a pH adjusting material such as calcium silicate to bring the garbage in a neutral direction. 3. The garbage disposal method according to claim 1, wherein heating is performed when air is taken in while stirring first.