JPS5810644B2 - Doubutsudaijiyoufunshiyorihouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a treatment method for deodorizing muddy manure such as chicken manure and cow manure.

More specifically, the present invention adds whitebait to muddy excrement that is difficult to dry due to its high moisture content, makes it easier to handle, dries and burns it, and uses the combustion heat of the excrement to burn the shirasu.
The present invention relates to a method of forming lightweight foams that have many uses.

Manure excreted by livestock and poultry is usually disposed of by being used as fertilizer or by drying it and turning it into fuel.

However, muddy manure such as chicken manure, cow manure, and other mixtures of manure and urine emit a strong odor and are difficult to dry, so there are various problems in the disposal method thereof.

Recently, the poultry farming industry has been moving from a small-scale side job to a large-scale one for the purpose of collecting eggs and meat. It is a source of pests such as pests and has become a major social problem as pollution.

Generally, chicken manure contains about 70% water in the winter and about 90% in the summer, so it has a strong odor and cannot be disposed of as is, so it can be used as fertilizer by digging a hole and burying it, or deodorizing it by drying it in the sun. However, in order to prevent the emission of bad odors during processing, it was necessary to take special measures such as drying in a plastic greenhouse or mechanically drying.

However, despite the recent decline in demand for chicken manure due to the spread of chemical fertilizers, on the other hand, the number of egg-laying hens and broilers is increasing, so there are ways to efficiently dispose of chicken manure. Alternatively, there was a desire for an effective method to be used.

As a result of intensive research to develop an efficient method for deodorizing and incinerating animal muddy feces, the present inventors added a predetermined amount of fine shirasu grains to this muddy feces to improve air permeability during drying. The inventors have found that the objective can be achieved by adding a foam, drying it under predetermined conditions, and then heating and baking it, and that a lightweight foam can be obtained as a by-product.Based on this knowledge, the present invention has been completed.

That is, the present invention reduces the moisture content of animal muddy feces from 30 to 6.
Fine whitebait grains are added in an amount sufficient to produce a 0% mixture and 0.5 to 5 times the amount of solids in the feces, and the mixture is then dried until the moisture content is below 15 parts. The object of the present invention is to provide a method for treating animal slurry feces, which is characterized in that the animal feces is then heated and baked.

Examples of animal slurry that can be treated by the method of the present invention include:
In addition to chicken manure, cow manure, etc., mixed slurry of various livestock and poultry manures and urine can be cited.

The fine shirasu grains added to this muddy feces usually have a particle size of 50
A material with a moisture content of 0μ or less and a moisture content of 1% or less is used.

In order to improve the air permeability during drying and shorten the drying time, it is necessary to add fine shirasu grains to the animal slurry in an amount that will give a mixture with a water content of 30 to 60.

However, the amount of whitebait compared to the solid content in feces is 0.
If the amount is less than 5 times the amount, the viscous filth will form lumps with the whitebait as the core, making it more difficult to dry than when no whitebait is added. If the amount is more than doubled, it becomes difficult to mold or pelletize, and it becomes impossible to maintain combustion only by the natural feces after drying.

Therefore, the amount of whitebait added is 0.5 per solid content in feces.
It is necessary to choose between ~5 times the amount.

Generally, when using the treated product as fertilizer, it is preferable to add 3 times or less, especially 1 to 1.5 times the amount of shirasu per solid content in the feces, but when using the treated product as a lightweight foam You can choose up to 5 times the amount.

After thoroughly kneading the mixture of dung and whitebait, it is dried until the water content becomes 15% or less, preferably 10% or less.

This drying may be done by sun drying or forced drying.

In either case, the drying time is 1/1 compared to the conventional case.
It can be shortened to 2 or less.

The thus dried mixture of dung and whitebait is placed in a kiln and fired.

The firing temperature is usually in the range of 750 to 1100°C.

According to the present invention, once the ignition is ignited, the combustion continues without any replenishment of fuel by simply introducing air, and the feces components are incinerated in an odorless state. The body turns into a so-called Shirasu balloon.

This lightweight foam is completely odorless and suitable as a filler for cement, plastics, etc.

The firing time varies depending on the water content, the amount of whitebait mixed, the firing temperature, the firing method, etc., but is usually from several seconds to several minutes.

As described above, according to the method of the present invention, it is possible to easily detoxify a large amount of animal muddy feces, which was conventionally considered a nuisance, in a short period of time, and also to produce a useful filler, killing two birds with one stone. The effect of this can be obtained.

Next, the present invention will be explained in more detail with reference to Examples.

Example 1 For chicken manure with a water content of 70% and a solid content of 30%, a particle size of 5
0.3 (A), 1.7 (B), 5.0 (C) and 7.0 (A), 1.7 (B), 5.0 (C) and 7.0 (A), 1.7 (B), 5.0 (C) and 7.
．． Add at a rate of 5 times the amount (D) and place in a constant temperature bath at 130~
Forced drying was performed at 140° C. while circulating hot air.

The relationship between the drying time and the residual water percentage is shown in FIG. 1 as a graph.

The dotted line curve in FIG. 1 is data for the case without the addition of whitebait for comparison.

As is clear from this graph, the drying rate of the product (A) in which the amount of shirasu added is less than 0.5 times the solid content weight is lower than that of the product with no additive (A), and the drying rate of the product (A) in which the amount of shirasu added is less than 0.5 times the amount of solid content ( D) takes a long time to dry to a certain extent, but it takes a long time to reach a moisture content of 15% or less.

Next, the thus obtained dried product with an amount of Shirasu added 5 times (C) and a water content of 10% was calcined for about 1 second at 950° C. using a fluidized roasting furnace to obtain gray Shirasu balloons.

Almost no odor was detected during this treatment.

Example 2 The same chicken manure-whitebait mixture as in Example 1 was dried in the sun.

The results are shown in FIG. 2 as a graph showing the relationship between drying time and residual water percentage.

The dried products (B) and (C) were fired in the same manner as in Example 1 to obtain similar shirasu balloons, but the dried products (D
) did not self-combust.

[Brief explanation of the drawing]

Figure 1 is a graph showing the relationship between drying time and residual water percentage when mixtures of chicken manure and whitebait at various ratios are force-dried, and Figure 2 is a graph when the same samples are dried in the sun.

Claims (1)

[Claims] 1. An amount sufficient to produce a mixture with a moisture content of 30 to 60% for animal slurry feces, and 0% of the solid content in the feces.
．． A method for treating animal muddy excrement, which comprises adding 5 to 5 times the amount of fine whitebait grains, then drying this mixture until the water content becomes 15% or less, and then heating and baking it.