JPH0742185B2 - Compost manufacturing method and device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to human feces, cow feces, pig feces,
The present invention relates to a method and an apparatus for producing dried powder compost from livestock manure such as chicken manure, human waste treatment residues, treated wastes of seafood and vegetables, and leftover rice.

[0002]

2. Description of the Related Art Conventionally, it has been practiced to mix a bacterial species in livestock manure, store it, ferment it, decompose it, and dry it to produce powdered compost.

[0003]

However, in the commercially available bacterial species, most of the bacteria contained therein are dead and the content rate of viable bacteria is low, and therefore a large amount of bacterial species is required. The purchase cost becomes a non-negligible value, and it takes a long time of 6 to 8 months to complete fermentation and decomposition, and the finished compost has a lot of water, which makes it difficult to handle. There was a problem such as doing. The present invention is intended to produce a compost in a dry powder form which is convenient for handling in a short period of time.

[0004]

The present invention is directed to a first step for obtaining original bacterial cells required for compost production from animal feces, a second step for obtaining a bacterial solution containing a large amount of bacteria from the original bacterial cells, and a bacterial solution. And a fourth step of mixing the dried bacterial cells with the compost raw material to obtain compost.

In the first step, water is added to animal feces and protein raw material to form a slurry, which is maintained at 36 to 43 ° C., preferably 38 to 42 ° C. for 2 to 3 days to recover the original bacterial cells. obtain. As the protein raw material used here, a portion that cannot be used for food or industrial raw materials such as internal organs and blood of livestock and seafood is suitable. The amount added is 10 to 1 of animal feces.
A suitable amount is 00%, and the amount of water added is about 2 to 5 times that of animal feces and protein raw materials.

In the second step, the sludge-like original bacterial cells obtained in the first step are further diluted with water to form a liquid,
Aeration is performed while maintaining the temperature at 43 ° C, preferably 38 to 42 ° C to obtain a bacterial solution. This time is several hours to one day.

In the third step, the plant solution is impregnated with the bacterial solution obtained in the second step, and hot air is blown while stirring the fine particles to obtain dried bacterial cells. As the plant fine pieces used here, sawdust, chaff, finely chopped paper or straw, etc. are suitable, and sugar-tightness and raw garbage are added as necessary. The time required for this process is about half a day to 2 days.

In the fourth step, the dried microbial cells obtained in the third step are dispersed and stored in a compost raw material, occasionally turned over by a shovel or the like and stirred to obtain a powdery compost. This required period is about half a month to two months. Animal manure,
It is possible to use the processing residue of the human waste processing facility, the processing waste of the seafood vegetables, the leftover food and the like.

[0009]

In the first step, Escherichia coli in animal feces grows by using the protein raw material as a nutrient, and in the second step, the Escherichia coli grows vigorously while foaming by aeration. If the bacterial liquid thus obtained is directly mixed with the compost raw material, the compost raw material becomes muddy and the treatment becomes more difficult. Therefore, in the third step, the plant fine particles are impregnated once with By exposing to air and stirring, the bacteria are further proliferated and the plant matter is decomposed to obtain dry cells.

In the fourth step, since the bacterial cells are in the form of dry powder, they can be easily dispersed in the compost raw material. During storage, the compost raw materials ferment and generate heat, so by turning them around with a shovel about once a week,
Keep it at 0-68 ℃, and ferment and decompose it uniformly,
And can be dried.

After 3 to 4 weeks, the compost raw material is completely decomposed, and is dried due to self-heating, and turns into a blackish brown powder compost. The methane gas generated during that time can be taken out from the upper part of the storage chamber and used as high quality fuel. The air for aeration in the second step and the air for blowing in the third step can be heated by the heat of combustion of the methane gas.

[0012]

EXAMPLE In FIG. 1, 1 kg of squid viscera serving as a protein raw material was placed in a storage tank 10 having an inlet 11 at the top.
5 kg of cow dung and 16 liters of water are mixed and housed, heated by the throw-in heater 12 whose temperature is set to 40 ± 2 ° C., and cultured for 48 hours to grow Escherichia coli. 13 shows this mixture.

The original bacterial cells thus obtained are stored in the storage tank 20 by opening the valve 15 of the discharge pipe 14 provided in the lower portion of the storage tank 10.
Move to. The storage tank 20 includes an air vent hole 21 and an electric stirrer 22.
Having a lid 23 provided with a heater 24 for heating inside
And a pipe 25 for aeration. The above-mentioned original cells are diluted with 500 liters of water. When this dilution liquid 26 is heated to 40 ± 2 ° C. by the heater 24 and air is fed through the pipe 25 to perform aeration, the dilution liquid 26 fermented violently to generate bubbles on the liquid surface for 7 to 8 hours. After that, a bacterial solution in which the bacteria have grown is obtained.

Reference numeral 30 denotes a storage tank, in which a wire net 31 is stretched above the bottom, an air supply pipe 32 is provided below the wire net 31, and an electric stirrer 33 is arranged above the wire net 31. 0.5 t of sawdust and 30 kg of sugar-tightness are put into this storage tank 30 to make a medium 34, and the valve 28 of the discharge pipe 27 at the bottom of the storage tank 20 is opened to mix the bacterial solution into the medium 34. Storage tank 30
When the sheet 35 is covered with and the medium 34 is stirred by the stirrer 33 and hot air of 40 ° C. is fed from the air pipe 32,
The medium 34 turns fermented into dark brown after 24 hours of fermentation, and is dried to change to dry cells.

A storage room 40 has a width of 4 m, a depth of 4 m, and a height of 3 m, and is provided with a door 41 on the front surface. This storage room 40 accommodates 46 t of cow dung, and the wire net 3 of the storage tank 30.
The gate 37 of the hopper 36 provided in No. 1 is opened to drop the dried bacterial cells on cow dung, which is mixed with a shovel and fermented. The cow dung 42 mixed with the dried microbial cells is heated to 60 to 68 ° C. by the heat of fermentation, whereby the fermentation is further promoted.

By excavating the cow dung every week, the fermentation progresses uniformly, and after 3 to 4 weeks, it is dried by the heat of fermentation and changed into a blackish brown powdery compost.

Since the compost thus obtained is in the form of a dry powder, it is extremely easy to handle, and because it is completely decomposed, it does not damage the plants and improves the water retention and air permeability of the soil. However, the effective fertilizer component becomes a nutrient for plants.

The cow dung 42 produces a large amount of methane during fermentation. Therefore, this can be taken out from the discharge pipe 43 provided on the ceiling of the storage chamber 40 and used as a high-quality fuel. This methane can be used as a heat source for the warm air sent from the air supply pipe 32 in the storage tank 30.

[0019]

As described above, according to the present invention,
Raw compost raw materials with high water content, such as human dung, livestock dung, manure treatment residue, seafood and vegetable treatment wastes, and leftover rice, are completely fermented and decomposed within a short period of time, and converted into dry powder compost. The compost is easy to handle, rich in effective fertilizer components, completely harmless to plants, and contributes to soil improvement.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

[Explanation of symbols]

 10 1st storage tank 12 Immersion heater (heating means) 20 2nd storage tank 22 Stirrer 24 Heater 25 Air supply pipe for aeration 30 3rd storage tank 31 Wire mesh 32 Hot air supply pipe (heating means and air supply means) 33 Stirrer 40 storage room

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C05F 9/00 7188-4H C12N 1/14 Z 7236-4B

Claims (2)

[Claims] 1. A first step in which water is added to animal feces and protein raw material in the form of sludge and kept at 36 to 43 ° C. to obtain original cells.
Dilute the original cells with water and add 36 under aeration.
The second step of obtaining a bacterial liquid by holding at ~ 43 ° C, and impregnating the bacterial microbe with the bacterial liquid in a sufficiently wet state, and agitating the impregnated product while blowing warm air to dry the bacterial cells. A compost manufacturing method comprising: a third step of obtaining and a fourth step of storing the compost raw material mixed with the dry cells for a long time to obtain a dry powder compost. 2. A first storage tank having a heating means for containing animal feces and raw material proteins diluted with water in a sludge form and heating the protein to 36 to 43 ° C., and the contents of the first storage tank. A second storage tank provided with a heating means, an aeration means, and a stirring means for accommodating a liquid diluted to a liquid state with water and heating the liquid to 36 to 43 ° C., and a plant impregnated with the liquid content of the second storage tank It comprises a third storage tank for accommodating fine particles and having a heating means, an air feeding means, and a stirring means, and a storage chamber for storing the compost raw material mixed with the contents of the third storage tank. Characteristic compost manufacturing equipment.