JP3243575B2 - Cultivation and production method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a soil for cultivation alone as it is by subjecting livestock manure, excess sludge from water and sewage and other putrefactive waste (including shochu waste and animal blood, etc.) to a predetermined treatment. The present invention relates to a cultivation soil and a method for producing the same, which can be used as a soil.

[0002]

2. Description of the Related Art For example, cultivated soil for raising seedlings is optimally one that has excellent water retention and water permeability and contains a required amount of a fertilizing component. However, the soil itself has variations in its physical structure, chemical composition and organic matter content, and usually has a small amount of nutrients and is not sufficient in terms of water retention and drainage. For this reason, conventionally, a material for improving water retention and water permeability, or various materials such as composted organic matter and microbial cells are mixed into soil to adjust the material.

[0003] However, in such cultivation, it is necessary to mix an appropriate amount of a material that compensates for the disadvantages according to the properties of the soil, and it is difficult to select and adjust the amount of the material. Also, the mixed materials themselves have their own problems. For example, in the case of using compost, sufficient composting takes time, and when mixed into soil, nitrogen is absorbed by microorganisms, which may cause nitrogen starvation. Also,
In the case where microbial cells are carried on a carrier and mixed into soil, there is a problem in the ability to adapt to environmental changes.

[0004] In any case, the conventional cultivation is merely made by mixing a predetermined material into the soil, so that it is difficult to artificially control the operation of the cultivation. There are many things that cannot be secured sufficiently.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned problems of the conventional cultivation and its production method. That is, the present invention provides a new soil which is rich in water retention and water permeability, has a slow release of fertilizing components, can be produced in a short time and at low cost, without using a means of mixing materials into soil. And a method for manufacturing the same.

[0006]

In order to achieve the above object, the cultivated soil of the present invention comprises a reaction product of a solid-liquid mixed putrefactive waste and calcium oxide, and a part of the calcium oxide is formed. , Lower fatty acids such as formic acid generated by thermally decomposing amino acids in putrefactive waste during the reaction, and fatty acids and amino acids containing lower fatty acids such as formic acid originally contained in the putrefactive waste Such acids are fixed as calcium salts, the remainder of calcium oxide is converted to calcium carbonate, and the organic matter in the perishable waste that has not been converted to calcium has become fermented organic matter,
Alternatively, it is characterized in that it has been removed.

[0007] In the method for producing a soil according to the present invention, a rapid hydration reaction is caused by adding an additive containing 95% or more of calcium oxide to a solid-liquid mixed putrefactive waste. ,
By this hydration reaction, calcium ions in calcium oxide are dissociated and a lower fatty acid such as formic acid is generated from amino acids in the putrefactive waste, such as formic acid originally contained in the lower fatty acid and the putrefactive waste. to form calcium salts and acids such as fatty acids and amino acids, including lower fatty acids, by a dissociated the calcium ions and organic perishable waste which does not form a calcium salt
The present invention is characterized in that the organic matter is converted into a fermented organic substance or washed out with water, and most of the calcium hydroxide slaked by the above reaction is converted into calcium carbonate.

[0008] As the raw material of the present invention, spoilage waste is effectively used. Perishable waste includes pig manure (including feces),
There are putrefactive residues discharged from food manufacturing plants such as chicken dung and other livestock manure, animal blood, excess sludge from water and sewage, and shochu waste. For example, in the case of pig manure, usually 86.5% to 9
4.5%, usually 15-30% for dried chicken dung, 75-97% for water and wastewater excess sludge, and 75-95% for decay residue of food factory. Although it is included, it is desirable to adjust the water content to 75 to 97% for use as a raw material of the present invention.

[0009] An additive containing calcium oxide as a main component is added to the above-mentioned raw materials and mixed and stirred. Specifically, 5 to 25 parts by weight of a predetermined additive is added to 100 parts by weight of the above-mentioned putrefactive industrial waste, and both are reacted.

It is desirable that the additives have high activity and satisfy the following conditions. High content of calcium oxide (preferably 95% or more) and low content of calcium hydroxide, calcium carbonate and other substances. Incidentally, a small amount (for example, 5% or less) of magnesium oxide may be contained as a composition component. It must be porous, have a large surface area and specific surface area, and have a highly developed pore structure. Excellent dispersibility when a small amount is brought into contact with water, for example, a property that disperses widely and quickly in all directions. To react violently and quickly to generate steam when a medium amount is added to water. It reacts well when a certain amount is added to water, and a temperature rise close to the theoretical value is observed. Furthermore, if necessary, the sedimentation velocity of the slurry containing slaked lime as the main component after contact with water shall be low and no sedimentation phenomenon shall be observed.

FIG. 1 shows the result of comparing the rate of temperature rise when the additive (a) used in the present invention is added to water with that of commercially available quicklime. Commercial quicklime, which has not been in contact with air, has just been opened (b), has been opened, has been left for 1 hour in a 90% humidity environment (c), and has been opened, has been left for 4 hours in the same environment. (D) were prepared. The figure shows that this additive (a) was added to 100 ml of water at an initial water temperature of 20 degrees C
And the above three types of quicklime (b) to (d) are each 2
The difference in heating rate (degree C / sec) when 0 g is added is shown in a graph.

As is clear from this figure, the additive material (a) has a significantly higher heating rate than the other commercially available products (b) and (d), ie, in a very short time (around 1 second). It can be seen that the temperature has risen sharply to a high temperature. This means that most of the calcium is instantaneously ionized and dissociated from the calcium oxide in the additive due to the hydration reaction, and the localization required to thermally decompose the organic matter contained in the putrefactive waste. It means that an extremely high heat state is created.

Therefore, when this additive is added to putrefactive waste, cellulose, lignin, high molecular weight protein, phospholipid and the like in the waste are excited under alkalinity, and are caused by the reaction between calcium oxide and water. Decomposed into low molecular weight compounds by local high heat. Then, the rapidly dissociated calcium ions bind not only to the terminal groups of the decomposed low-molecular compounds or the phospholipids and the higher fatty acids, but also to lower fatty acids such as formic acid and acetic acid, and are hardly soluble in the reaction product. To produce a stable calcium salt. Calcium compounds produced by this chemical reaction, especially a complex salt reaction with lower fatty acids, are completely different from physically only stable substances produced by coagulation when, for example, slaked lime or the commercially available quicklime is added. Becomes In these cases, a calcium salt cannot be formed because the dissociation degree of calcium ions is low or the dissociation rate is slow, and the decomposition of organic substances in perishable waste is insufficient.

FIG. 2 shows that such soluble organic acids and acids such as amino acids contained in the putrefactive waste are fixed as the hardly soluble calcium salt in the reaction product of the present invention. It is a graph of an experimental result.
The figures (A) to (E) show reaction products (A) to (C) using swine manure as a raw material, dried swine manure (D), and composted swine manure (E), respectively. The amount of organic substances eluted at each washing when washing with hydrochloric acid after washing with water four times is measured. FIG. 2A shows the result of the reaction product when the additive is added at 20% to the raw material, FIG. 2B shows the result of the reaction product when the additive is 10%, and FIG. FIG. 3C shows the results of the reaction products when the additive material is 5%.

As is clear from this figure, in the case of dried pig manure and its compost, only a small amount of organic matter was eluted by acid washing after washing with water, whereas in the reaction product according to the present invention, any of In this case as well, it can be seen that the organic substances are remarkably eluted by the acid washing after the elution is stopped by the water washing. This means that most of the organic substances contained in the substances (D) and (E) other than the reaction products are water-soluble, whereas the reaction products according to the present invention have the disadvantage that This indicates that it is included as a calcium compound which is hardly soluble in water and soluble in acid.

The formic acid fixed as a calcium salt in the present invention is a substance which is inherently relatively unstable and easily volatilizes. However, in the present invention, a large amount of calcium ions instantaneously dissociated by the above-described reaction quickly binds to formic acid and fixes it as calcium formate. The lower fatty acids such as formic acid are not only originally contained in the putrefactive waste, but also are produced by the thermal decomposition of proteins and amino acids in the putrefactive waste by the above-mentioned heat of reaction. The newly generated lower fatty acid containing formic acid and the like is also fixed as a calcium salt by the calcium ions. Incidentally, when calcium hydroxide is used as an additive, fixation of formic acid, that is, formation of a calcium salt is extremely difficult, and formic acid remains and volatilizes in the air or flows out by water such as rainwater.

The following test was conducted to show that formic acid was fixed as calcium formate in the reaction product according to the present invention. The above additive was added to a slurry containing swine manure as a main raw material, and the mixture was stirred and dried (a sample having a ratio of slurry to additive of 2: 1 and a sample having a ratio of 1: 1 were used).
Sample 2), slaked lime was added to the slurry at a ratio of 1: 1 and the mixture was stirred and dried (sample 4). For each sample (Sample 5)
After a predetermined time after immersion in water, the presence or absence of formic acid contained in the supernatant was examined by high performance liquid chromatography.
Next, these samples 1 to 5 were subsequently immersed in a hydrochloric acid solution, and the presence or absence of formic acid contained in the immersion was examined again. Table 1 summarizes the test results.

[Table 1]

As is clear from the above results, the presence of formic acid in the acid solution was confirmed in all of the samples 1 to 3, whereas the formic acid was not present in the acid solution in slaked lime and untreated slurry. Rather, they are present in large amounts in aqueous solutions. This indicates that in the case of Samples 1 to 3, formic acid reacts with calcium oxide to form a complex salt, and calcium formate, which does not elute in water, is eluted by the acid. The results show only binding to calcium hydroxide.

FIG. 3 shows the type of lower fatty acid fixed as a calcium salt in the reaction product of FIG. 2 (B) (A in FIG. 2) and calcium hydroxide added to the same amount of swine manure and mixed and stirred. FIG. 4 is a quantitative graph showing the type of lower fatty acid at the time (B in the same figure). The reaction product of the present invention comprises:
It contains about twice the amount of lower fatty acids as compared to the case of adding calcium hydroxide, and contains more than 3% of formic acid. When calcium hydroxide was added, the amount of the lower fatty acid was small, and formic acid was not detected. This means that not only does the lower fatty acid contained in the putrefactive waste react with calcium oxide in the above reaction process and is converted into calcium, but also proteins and the like contained in the putrefactive waste are decomposed. This indicates that the lower fatty acid produced by the above-mentioned process is similarly calcium chloride.

By the above-mentioned chemical reaction, the higher fatty acids contained in the putrefactive waste are also formed as calcium salts. Other organic matter contained in perishable waste,
For example, about 98% of water-soluble phosphoric acid is fixed as calcium phosphate in an effective state. Calcium phosphate in an effective state is produced by the reaction between phosphoric acid contained in putrefactive waste and phosphoric acid contained in phospholipids and an additive, and therefore, from the reaction product, putrefactive waste as raw material is produced. The water-soluble phosphate and lipid contained therein are significantly reduced. In the case of putrefactive waste containing a relatively large amount of glyceride, the glyceride also becomes a stable and hardly soluble calcium salt due to calcium oxide having strong activity. Therefore, the reaction product itself does not cause anaerobic fermentation, generation of gas or pests, and the like.

The remaining calcium ions which do not contribute to the formation of calcium salts are converted into calcium hydroxide by slaking reaction and into calcium carbonate by contact with carbon dioxide gas, and are mixed in the reaction product. To show an example of the ratio of these calcium compounds including calcium salts,
Assuming that the amount of calcium oxide added is 100, calcium hydroxide is about 18%, calcium carbonate is about 48%,
Calcium salt is about 34%.

By adding calcium oxide,
Not only is a calcium compound generated, but also basic components such as ammonia and amines contained in the putrefactive waste are gasified and removed. That is, a denitrification phenomenon occurs during the hydration reaction. As a result, the nitrogen content in the reaction product can be adjusted to an appropriate amount. Therefore, in the present soil, a nitrogen-rich phenomenon, a change with time due to post-fermentation, and the formation of an anaerobic environment are prevented.

If the reaction time of the additive is too long, a kneading phenomenon (pasting, refining) is exhibited, and the resulting cultivated soil is hardly formed into an aggregated structure and hardly dried. Within minutes is desirable. However, when the raw material contains a substance that is difficult to react such as a phospholipid, a liquid oil, a basic substance, or a hardly decomposable polymer compound, the reaction time is appropriately extended. The additive material may be added in multiple portions without adding the above amount at one time.

As described above, the reaction product is a mixture of the above-mentioned calcium compound and unreacted organic and inorganic substances. Particularly, the calcium compound is physically omnidirectional (stereo-omnidirectional) due to the above-mentioned activity of calcium oxide. ) Is uniformly dispersed.

FIG. 4 shows the results of a test plot in which 12 kg of the reaction product having the above composition was dried and mixed with 12 kg of soil, and a control plot in which the reaction product was not administered.
It is the result of having measured the pF value of soil moisture over a period of months (May 14, 1991 to November 21, 1991) as a graph. In the figure, the solid line indicates the trend of the pF value in the test plot, and the dashed line indicates the trend of the pF value in the control plot. As is clear from this figure, during the above-mentioned period, pF was used in the control group.
The value fluctuated vigorously between 0 and 3.0, whereas in the test plot the value remained between 1.2 and 2.8. In particular, the pF value was extremely low in the control plot in the autumn rainy season of this year, whereas in the test plot,
It holds between 1.5 and 2. From this, it is understood that in the area where the reaction product is mixed, the water retention and the water permeability of the soil are maintained in an ideal state.

The cultivated soil of the present invention can be obtained by subjecting the above reaction product to the following treatment. First, the organic matter in the reaction product is made organic by fermentation or the like, or the reaction product is removed by washing with water and washing away. When organic matter is made organic, a water-soluble fertilizing ingredient and a hardly soluble calcium-chlorinating fertilizing ingredient are mixed in the medium, resulting in a complex in which inorganic matter has entered organic matter. Form.
In addition, in the culture soil from which organic matter was removed, the whole became mineralized,
When the calcium salt is dissolved by the acid generated from the root of the plant, the organic matter inside acts as a fertilizing component or feeds on soil microorganisms. In this way, the present soil removes the adverse effects of non-organized organic substances such as the generation of harmful gases and the generation and growth of harmful microorganisms.

Next, of the calcium compounds, calcium hydroxide is converted to calcium carbonate. When the organic matter in the reaction product is fermented, calcium hydroxide may be directly converted to calcium carbonate by carbon dioxide gas generated during fermentation. Of course, the reaction product may be forcibly brought into contact with carbon dioxide gas. Most of the calcium hydroxide may be washed away by washing with water. If carbon dioxide gas is blown in when washing with water, it is possible to simultaneously remove the above-mentioned organic substances and calcium hydroxide and convert calcium hydroxide into calcium carbonate.

In this way, as a result of the removal of calcium hydroxide from the main soil, the pH value thereof becomes almost neutral. In addition, when the organic matter in the reaction product is also removed as described above, the medium becomes an aggregate of substances that are hardly soluble in water. It should be noted that the treatment of the organic substance and calcium hydroxide does not matter in terms of time. In removing organic substances and calcium hydroxide, it is not necessary to remove all of them, and most of them may be removed as much as possible.

Further, the cultivation soil of the present invention is obtained by the above-mentioned reaction product, which is an intermediate process product, being obtained by rapidly diffusing calcium oxide into putrefactive waste, so that the volume once expanded and then dried. Creates a large number of voids,
It is produced as a substance with a high porosity or porosity.
Such a physical structure does not change even after the above-mentioned treatment is applied to the organic matter and the calcium hydroxide in the reaction product, and the present soil is characterized as a substance having high water retention and water permeability.

[0030]

Embodiments of the present invention will be described below. FIG. 5 shows a system for producing cultivated soil according to the present invention.
In the figure, reference numeral 1 denotes a raw material hopper for putrefactive waste, and reference numeral 2 denotes a silo of the additive material containing calcium oxide as a main component.
1 to the reactor 3. The reaction product obtained by mixing and stirring the putrefactive waste and the calcium oxide in the reactor is temporarily retained in the transfer tank 4 below the reactor, and then transferred by the transfer pump 5 through the transfer line 51. It is transported to the drying chamber 6. In the drying chamber 6, the reaction product is forcibly dried by hot air or the like. As a heat source of the hot air, another waste incineration system may be provided in parallel with the present system, and may be guided from the system.

The dried reaction product is introduced into the fermenter 7 by the transport conveyor 61, and the unreacted organic matter is fermented and water contained in the reaction product is generated by the carbon dioxide gas generated at the same time. Calcium oxide is converted to calcium carbonate. In addition, the code | symbol 71 in a figure shows a fermentation adjustment apparatus. The substance taken out from the fermenter 7 constitutes a cultivation soil according to the present invention of a complex in which calcium salts, calcium carbonate, organic matter, and other inorganic substances are appropriately mixed.

One example of the production of soil using the above apparatus is as follows. First, 10 kg of calcium oxide is added to 100 kg of pig manure as a raw material, and this is added to a reactor in a reactor.
Mix and stir for 5 minutes, 110 kg of reaction product in slurry form
I got This was dried in a drying room at a temperature of 30 ° C.
After removing 0% of water, it was put into a fermenter. When it was taken out from the fermentation tank approximately 72 hours later, about 40 Kg of soil was obtained. In this soil, the calcium compound was 15 kg (dry matter weight), and the fermented organic matter and other inorganic matter was 12 kg (dry matter weight).

The pH value and the like of the cultivated soil and the weight percent of calcium, magnesium and potassium in the components are compared with the reaction product as an intermediate product. First, the reaction product as an intermediate product has a pH of 12.6, an EC of 6.9,
Total calcium content is 28.2%, total magnesium content is 1.
While the amount of potassium was 54% and the total amount of potassium was 1.48%, the main soil produced through the final step of the method of the present invention was:
pH 7.78, EC 2.62, total calcium 2
5.8%, the total magnesium content was 0.88%, and the total potassium content was 0.66%.

An example in which the cultivated soil is applied to melon cultivation will be described. An additive containing calcium oxide as a main component was added to pig manure, and the reaction product was washed with water to obtain soil according to the present invention. Entrusted to Shizuoka Prefectural Iwata Agricultural High School, in the same greenhouse, put only the cultivated soil into a pot, planted melons of the variety of the Ahls Febolit strain on September 24, 1991,
It was harvested on December 13 (75th day). As comparative examples, six types of soils A to F were used. A is the existing soil (processed paddy field), B is the mixture of the main soil and Shirasu (volcanic pumice) 50% each, and C is the main soil 30
% Mixed with 70% shirasu, D mixed with 20% sashimi and 80% shirasu, E mixed with 50% sashimi and mixed with the above-mentioned existing soil 50%, and F mixed with 50% shirasu 50% mixed with phosphoric acid as original fertilizer. The cultivation was managed as usual.

Sensory tests of the seven melons by 20 panelists gave the results shown in Table 2. The evaluation is performed on a five-point scale, where 5 is very delicious, 4 is delicious, 3 is normal, 4 is bad, and 1 is very bad.

[Table 2]

As is evident from the results, even when the soil according to the present invention was used alone, it was possible to cultivate a melon which is comparable to that of the existing soil in terms of sugar content, taste, smell and the like. The fact that the sugar content was superior to that of the control A, but slightly inferior in evaluation, was due to the fact that the soil using the soil according to the present invention was over-poured more than the others. In the examples including the control group, water is appropriately administered.However, in the case of the cultivation soil according to the present invention, although it has a high water retention property, it has a whitish brown color, so it is apparently dried. This is because a large amount of water was administered compared to the others.

The fact that the substance according to the present invention can be used as a cultivation soil can also be understood from the control plots B to D of this embodiment.
In these control plots, the cultivation soil according to the present invention was diluted by a predetermined amount with shirasu. As a result of mixing the shirasu, these cultivated soils are cultivated soils having better water permeability but lower water retention than the cultivated soil according to the present invention alone. As a result, when a large amount of water is administered, only the amount of water corresponding to the amount of shirasu is permeated, and the amount of water corresponding to the amount of the soil according to the present invention is stored inside.

The evaluation of the sugar content and the taste of the harvested products in B to D of the present example shows the results corresponding to the mixed amount of the cultivated soil according to the present invention. That is, B containing 50% of the cultivated soil of the present invention is the best (it has a higher value than that of F which was initially administered with phosphoric acid). ing. This indicates that the soil according to the present invention can be used as a good soil as long as an appropriate amount of water is administered.

Further, in the control section E in which the cultivation medium according to the present invention and the existing cultivation medium are mixed, unlike the above-mentioned control areas B to D, the cultivation medium according to the present invention is diluted by the mixed existing cultivation medium. In addition, it shows a state that is affected and the property is not sufficiently expressed.

In addition, this soil can be generally used as a soil for growing various crops such as komatsuna, spinach, eggplant, tomato, cucumber and the like. When used as these soils, various organic acids contained in the calcium salt are in a form easily absorbed by the roots of the cultivated plant, and act to enhance the characteristics of each plant. For example, the sugar content, the water content, the disease resistance, the starch content, and the leaf thickness are improved. In addition, examples have been reported in which the flowering time is advanced and the rooting is improved.

As described above, the cultivated soil according to the present invention is:
The fertilizer can be used alone or mixed with other soil, but initial fertilization may be applied depending on the type of spoilage waste to be grown and / or raw material. Of course, the amount is small compared to the conventional soil.

[0042]

As described above, according to the present invention, the following effects can be obtained. In the cultivation soil according to the present invention, since calcium oxide reacts and diffuses with the putrefactive waste of the solid-liquid mixture, it is formed after being expanded in volume and then dried to form a large number of voids, and porosity Or it becomes a substance with a large porosity. Therefore, it is possible to provide a cultivated soil having a aggregate structure in which the calcium compound is uniformly dispersed in all directions.

Further, since acids such as lower fatty acids including formic acid are fixed in a stable state as calcium salts, the above-mentioned fatty acid calcium and the like are sequentially decomposed by acidic substances or acids generated by effective microorganisms according to the time. As a result, the fertilizing effect component is slow-acting and can maintain a soil environment effective for the growth and activation of effective microorganisms and the activation of ecological growth.

[0044] Also, soil according to the present invention, while utilizing the calcium oxide is converted calcium hydroxide to remove or calcium carbonate, also, non-perishable waste
The reaction organic matter becomes fermented organic matter
Is removed, so that there is no adverse effect due to excess base or unfermented organic matter.

Further, according to the present invention, since the hydration reaction of putrefactive waste and calcium oxide is used, not only can the putrefactive waste be effectively used, but also the cost is increased. It can provide effective soil cultivation without the need.

Further, according to the present invention, when calcium oxide is caused to react with putrefactive waste, organic matter is decomposed into low-order fatty acids by high heat generated locally, and this is converted into calcium salt. Can be stably fixed in a water-insoluble and acid-soluble state.

[Brief description of the drawings]

FIG. 1 is a graph showing a digestion reaction rate of calcium oxide used in the present invention.

FIG. 2 is a graph of experimental results showing that acids such as soluble organic acids and amino acids in spoilage waste are fixed as sparingly soluble calcium salts in the reaction product of the present invention. A) to (E) are reaction products (A) to (C) using pig manure as raw materials, and dried pig manure (D).
And the compost of swine manure (E) was washed four times with water and then washed with hydrochloric acid, and the amount of organic substances eluted at each washing was measured. The result of the reaction product when 20% of the additive is added
(B) shows the result of the reaction product when the additive is 10%,
(C) shows the result of the reaction product when the additive is 5%.

FIG. 3 shows the type (A) of the lower fatty acid fixed as a calcium salt in the reaction product of FIG. 2 (B) and the lower fatty acid obtained by adding and mixing calcium hydroxide to the same amount of swine manure. The type (B) is shown in a quantitative graph.

[Fig. 4] After drying the reaction product, 12K is applied to 12m2 of soil.
6 is a graph showing the results of measuring the pF value of soil moisture over about 6 months for a test group in which g was mixed and turned up and a control group to which no reaction product was administered.

FIG. 5 shows an example of a system for producing cultivated soil according to the present invention.

Claims (4)

(57) [Claims] 1. A reaction product of a solid-liquid mixed putrefactive waste and calcium oxide, and a part of the calcium oxide is formed by thermally decomposing amino acids in the putrefactive waste during the reaction. The fixed fatty acids such as formic acid, etc., and the fatty acids and amino acids containing low fatty acids such as formic acid originally contained in the putrefactive waste are fixed as calcium salts, and the remaining calcium oxide is converted to calcium carbonate. Organic waste in spoilage waste
The soil is characterized by the fact that the material is fermented and organic . 2. A reaction product of a solid-liquid mixed putrefactive waste and calcium oxide, and a part of the calcium oxide is formed by thermally decomposing amino acids in the putrefactive waste during the reaction. The fixed fatty acids such as formic acid, etc., and the fatty acids and amino acids containing low fatty acids such as formic acid originally contained in the putrefactive waste are fixed as calcium salts, and the remaining calcium oxide is converted to calcium carbonate. A soil cultivation characterized by removing organic matter in putrefactive waste that has not been calcium salified. 3. A method for producing a cultivated soil according to claim 1.
Thus, 95% or more of calcium oxide is added to the solid-liquid mixed spoilage waste.
The addition of the additive material causes a rapid hydration reaction, which dissociates the calcium ions in the calcium oxide and produces lower fatty acids such as formic acid from the amino acids in the putrefactive waste. A low-fatty acid and a fatty acid including a low-fatty acid such as formic acid originally contained in putrefactive waste and an acid such as an amino acid, and the dissociated calcium ion form a calcium salt, and form a calcium salt. Not in perishable waste
A method for producing cultivated soil, characterized in that organic matter is converted into fermented organic matter and most of the calcium hydroxide sludged by the above reaction is converted into calcium carbonate.
Law. 4. A method for producing a cultivated soil according to claim 1.
Thus, 95% or more of calcium oxide is added to the solid-liquid mixed spoilage waste.
The addition of the additive material causes a rapid hydration reaction, which dissociates the calcium ions in the calcium oxide and produces lower fatty acids such as formic acid from the amino acids in the putrefactive waste. A low-fatty acid and a fatty acid including a low-fatty acid such as formic acid originally contained in putrefactive waste and an acid such as an amino acid, and the dissociated calcium ion form a calcium salt, and form a calcium salt. A method for producing cultivated soil, characterized in that organic matter in perishable waste that has not been washed away is washed away with water and most of the calcium hydroxide slaked by the above reaction is converted into calcium carbonate .