JP2010241637A - Organic fertilizer and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an organic fertilizer produced from organic waste such as food waste mainly including kitchen garbage as a raw material, having an effect as a soil preparation material for improving physical, chemical and biological properties of soil, and an effect of a basal fertilizer, and improved in storage property and handling property (machine manuring characteristics). <P>SOLUTION: The organic fertilizer is produced by mixing 50 to 70 wt.% of organic waste, which is fermentation treated and dried to have a moisture content of about 20% by fermentation and drying, 30 to 50 wt.% of a high-protein organic substance having a C/N ratio of not more than 8, and 10 to 15 wt.% of a granulation accelerating organic substance, fermenting, granulating the mixture and drying it. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an organic fertilizer and a method for producing the same, and more particularly to an organic fertilizer made from food wastes, mainly raw garbage such as cooking residues discharged from business establishments, and a method for producing the same.

  In recent years, recycling of food wastes, mainly food waste such as cooking residues discharged from business establishments, has become a major social issue.

  Conventionally, organic waste such as food waste has been used to produce soil amendments and compost, so that organic waste can be used as soil-making materials for the purpose of improving soil physical properties. It is done. This is because it is desirable from the viewpoint of recycling that food wastes such as cooking residues are mainly returned to farmland.

  Organic waste such as food-based waste is high in moisture, low in fertilizer components, and high in carbon. Further, a treatment for lowering the carbon ratio (C / N ratio) is necessary.

  Also, when composting organic waste such as food-based waste, it takes a fermentation period and curing period of about half a year if it is long. Measures are necessary for the environment. For this reason, composting requires high costs, while compost, which is a manufactured product, has a low transaction price and is not profitable.

  Conventional compost using organic waste as a raw material has not been easy for farmers to use. For example, compost using conventional organic waste as a raw material usually has a low fertilizer component, and when it is used for composting, it is necessary to apply 1 to 3 tons per 10 ares, and the labor burden is large. Moreover, since the component balance also varies, a base balance problem in the soil may occur. Furthermore, compost made from organic waste as a raw material has a rough powder shape and high moisture content, so there are problems in quality control, such as inventory location, generation of mold, and various problems in use. .

  As one of recycling organic wastes such as food wastes, it has been proposed to manufacture and use fertilizers using these as raw materials (for example, Patent Document 1).

  According to this, food waste is dried to a moisture content of around 10% and mixed with nitrogenous fertilizers such as urea and ammonium sulfate, or chicken manure, sewage sludge, etc. to obtain a carbon ratio (C / N ratio). By adjusting to 10 or less, it is said that the period until the raw material food waste can be treated and returned to the farmland is short, and a fertilizer that can provide fertilizer in a short period of time after fertilizing the farmland can be provided.

JP 2001-151585 A

  As mentioned above, fertilizers such as soil conditioners are manufactured using organic waste such as food waste, mainly food waste such as cooking residue discharged from business establishments. There are various problems such as low effect, poor workability, and unstable quality. To date, no sufficient proposals have been made to solve these problems.

  Therefore, the present invention uses organic waste such as food waste, mainly food waste such as cooking residues discharged from business establishments, as a raw material, and is low in effectiveness, poor workability, and unstable quality. Overcoming various conventional problems, such as improving soil physics, chemistry, and biological properties, as well as the effects of soil-making materials and the basic fertilizer effect, organic matter with improved storage and handling (mechanical fertilization characteristics) The purpose is to propose fertilizer and its manufacturing method.

The invention according to claim 1 proposed by the present invention in order to achieve the above-mentioned object,
50 to 70% by weight of organic waste that has been fermented and dried to about 20% by fermentation and drying, and 30 to 50% by weight of high protein organic matter having a C / N ratio of 8 or less, granulation The organic fertilizer is prepared by mixing 10 to 15% by weight of an accelerated organic substance, fermenting, granulating and drying.

The invention according to claim 2
2. The organic fertilizer according to claim 1, wherein the organic waste contains garbage and / or animal and vegetable residues.

The invention described in claim 3
The organic fertilizer according to claim 1 or 2, wherein the high protein organic substance having a C / N ratio of 8 or less includes an organic fertilizer comprising a dry cell fertilizer and / or an animal or plant organic fertilizer.

The invention according to claim 4
The organic fertilizer according to any one of claims 1 to 3, wherein the C / N ratio is 4 to 8.

The invention according to claim 5
50 to 70% by weight of organic waste that has been fermented and dried to about 20% by fermentation and drying, and 30 to 50% by weight of high protein organic matter having a C / N ratio of 8 or less, granulation It is a method for producing an organic fertilizer, characterized in that 10 to 15% by weight of an accelerated organic substance is mixed, fermented, granulated and dried.

  According to the present invention, organic waste such as food-based waste such as food waste such as cooking residue discharged from business establishments is used as a raw material, and low effectiveness, poor workability, and uneasy quality. Overcoming various conventional problems such as qualitative, has the effect as a soil-making material such as improvement of soil physics, chemistry, and biological properties, and the basic fertilization effect, and has improved storage and handling properties (mechanical fertilization characteristics) An organic fertilizer and a method for producing the same can be provided.

The flowchart explaining the schematic process of the manufacturing method of the organic fertilizer of this invention. It is a figure showing the result of the fertilization effect evaluation test (mineralization test) by the "culture method" about the organic fertilizer of this invention, Comprising: (a) is a test soil (paddy soil) is a gray lowland (Kumaya, Saitama Prefecture) (B) is the result when the test soil (paddy field soil) is glai soil (Yoshikawa, Saitama Prefecture). (A) The figure showing the paddy field temperature conditions at the point where the fertilization effect evaluation test (mineralization test) by the “field embedding method” for the organic fertilizer of the present invention was performed, (b) “the field embedding of the organic fertilizer of the present invention The figure showing the result of the fertilization effect evaluation test (mineralization test) by "method".

  The organic fertilizer of this invention is fermented and fermented and dried to 50% to 70% by weight of organic waste dried to about 20%, and a high protein organic matter 30 having a C / N ratio of 8 or less. It is produced by mixing -50% by weight and 10-15% by weight of the granulation promoting organic substance, fermenting, granulating and drying.

  Here, the organic waste contains raw garbage (that is, raw garbage such as cooking residue discharged from business establishments) and / or animal and plant residues, and is subjected to primary treatment (fermentation treatment). The material dried to about 20% by fermentation and drying (for example, sun drying) is used as the raw material of the present invention. Organic waste containing garbage and / or animal and vegetable residues is subjected to primary treatment (fermentation treatment) as described above, and moisture is dried to about 20% by fermentation and drying (for example, sun drying). The organic fertilizer of the present invention can be produced by simple fermentation for about one week when mixed with a high protein organic substance having a C / N ratio of 8 or less.

  In addition, the organic waste containing the above-mentioned garbage and / or animal and vegetable residues is generally a high carbon material (C / N ratio is 9 or more), crude fat (CF) 8-12%, electric conduction The degree (EC) is 10 mS or less, and the mineralization rate is 20% or less.

  As a high-protein organic substance having a C / N ratio of 8 or less, an organic substance containing a dry cell fertilizer and / or an animal and plant organic fertilizer can be used.

  Dry cell fertilizers are as follows: 1. Bacteria obtained by culturing, or dried debris obtained by extracting lipids or nucleic acids from these cells; It is defined as a product obtained by heating and drying cells obtained by purifying waste water from the food industry, pulp industry, fermentation industry, or gelatin industry (limited to those that do not use tanned leather waste as a raw material) by the activated sludge method. It is what. For example, dry cell fertilizer manufactured by Asahi Kogyo Co., Ltd. (trade name: dry cell fertilizer No. 52), which is obtained by dewatering surplus sludge generated by wastewater treatment (activated sludge method) in the food industry and drying it by heat, is used. be able to.

  Animal and plant organic fertilizers are ordinary fertilizer organic fertilizers defined by the official fertilizer standards. It is not particularly limited as long as it is an organic fertilizer derived from animals and plants such as animal meal powder, fish meal, bone meal, by-product animal fertilizer, vegetable oil meal, by-product vegetable fertilizer, fish waste processing fertilizer, etc. . In the present invention, it is desirable to use a C / N ratio of 8 or less and a total amount of nitrogen of 4.5% or more.

  The high protein (C / N ratio is 8 or less) organic substance containing the above-mentioned dry cell fertilizer and / or animal and plant organic fertilizer generally has a mineralization rate of about 50 to 65%.

  Manufactured by adding and mixing high-protein organic substances with a C / N ratio of 8 or less to organic waste containing garbage and / or animal and vegetable residues that are high carbon materials (C / N ratio of 9 or more) It is possible to stabilize and improve the fertilizer effect of the fertilizers made. This will provide a new organic fertilizer with high added value (high-quality organic fertilizer) that combines the effects of compost, that is, soil-making materials such as improvement of soil physics, chemistry, and biological properties with the basic fertilizer effect. Can do.

  According to the present invention, in this way, the added value (use value) of organic waste such as food waste, mainly food waste such as cooking residue discharged from business establishments, is increased and produced. Can increase the utilization rate by farmers (agricultural producers) and promote recycling agriculture. In addition, the application of soil-making materials can be promoted to promote environmental conservation agriculture.

  In the above, the organic waste is 50 to 70% by weight because if it is less than this, the effect as a soil-making material will not be sufficiently exhibited, whereas if it is more than this, the C / N ratio This is because it becomes undesirably high and the fertilization efficiency is reduced.

  The reason why the high protein organic substance having a C / N ratio of 8 or less is set to 30 to 50% by weight is to stabilize and improve the fertilizer of the manufactured fertilizer of the present invention as described above, as described later. In order to develop the fertilizer of the present invention with an effective fertilizing effect and composting effect of C / N ratio of 4 to 8, and to develop fertilizer mineralization similar to that of ordinary organic fertilizer (for example, oil lees), the organic waste described above It is determined in consideration of the blending ratio (50 to 70% by weight) of the product.

  In the above, as the granulation accelerating organic material, cocoons such as ginger can be used, and added and mixed in an amount of 10 to 15% by weight for the purpose of improving moisture content and permeability in the granulation process.

  In the above, the organic waste to be added / mixed, the blending ratio of the high protein organic substance having a C / N ratio of 8 or less, and the granulation promoting organic substance may exceed 100% by weight. Considering that the water lost in the drying process corresponds to a portion exceeding 100% by weight.

  By mixing the organic waste, the high protein organic substance having a C / N ratio of 8 or less, and the granulation promoting organic substance and fermenting them, the easily decomposable organic substance is decomposed and the composting damage property is avoided. Can increase the safety of fertilizer. Moreover, mineralization can be promoted by reducing the C / N ratio to fall within a desired C / N ratio of 4 to 8.

  In the fermentation performed by mixing the raw materials, if necessary, the water is adjusted appropriately to adjust the water content. Moreover, the fermentation process can be made into fermentation using the integrated temperature as conventionally performed.

  The fermentation period is about 1-2 weeks. Since organic waste is firstly treated (fermented), and the raw material is dried to about 20% moisture by fermentation and drying, a short fermentation process is required.

  The granulation step is, for example, granulating into a pellet shape having a diameter of about 4 mm. By granulating into pellets of this size, it is possible to provide an organic fertilizer with good handling properties and mechanical fertilization characteristics, enabling mechanical fertilization and saving labor. In the granulation step, in addition to pellet granulation (extrusion molding), the same size as described above may be formed by briquetting granulation (tablet granulation). In any case, an organic fertilizer having good handling properties and mechanical fertilization characteristics can be provided.

  In the above, after the raw materials are mixed and fermented, the step of granulating and drying is performed such that the moisture content is 10% or less. For example, it can be dried by conventionally known thermal drying. By this drying, it is possible to suppress various germs, prevent the generation of mold, and make a fertilizer with good storage stability.

  It is desirable that the pelletized fertilizer having a hardness of 1.5 kgf or more and a water content of 10% or less and having a diameter of about 4 mm or a tablet-like fertilizer having the same size is obtained through the granulation step and the drying step.

  The organic fertilizer of the present invention produced as described above preferably has a C / N ratio of 4-8. Moreover, it is desirable that the mineralization rate on the 90th day after fertilization is 50% or more on average.

  Here, the average mineralization rate on the 90th day after fertilization is 50% or more on average because the type of soil to be fertilized with the organic fertilizer of the present invention (for example, Gly soil paddy field, brown lowland soil field, black my soil field, Etc.), and the nitrogen decomposition rate differs depending on the conditions.

  By controlling the C / N ratio in such a range and controlling the mineralization rate in such a range, raw garbage (that is, garbage such as cooking residue discharged from business establishments) and / or animal and vegetable properties Fertilizer mineralization of organic waste containing residues can be expressed like ordinary organic fertilizer (for example, oil lees), and appropriate fertilization effect and compost effect can be expressed.

  The C / N ratio of the fertilizer of the present invention produced as described above is 4 to 8, and the mineralization rate on the 90th day after fertilization is controlled to an average of 50% or more by organic mixing at the above-mentioned blending ratio. This can be carried out by mixing a product, a high protein organic substance having a C / N ratio of 8 or less, and a granulation promoting organic substance, fermenting, granulating and drying.

  The NPK component in the fertilizer of the present invention produced by the method of the present invention is preferably such that the N component is at least 4% or more and the PK component is at least 1% or more, respectively, and crude fat (CF) Is preferably 15% or less, and the electrical conductivity (EC) is preferably 10 mS or less.

  When the ratio of the NPK component is lower than those described above (the component is at least 4% or more and the PK component is at least 1% or more, respectively), the fertilizer cannot be sufficiently expected.

  Further, if the crude fat (CF) exceeds 15%, the mineralization rate decreases, which is not preferable. From this viewpoint, the desirable crude fat (CF) is 10% or less.

  If the electrical conductivity (EC) exceeds 10 mS, salt damage is likely to occur, such being undesirable.

  In the production of the fertilizer of the present invention, in order to control the NPK component ratio, crude fat (CF), and electric conductivity (EC) of the manufactured fertilizer of the present invention product to the above-mentioned preferable numerical ranges, In the process of mixing organic waste, high-protein organic material with a C / N ratio of 8 or less, and granulation accelerating organic material, fermenting, granulating, and drying, properly grasp and confirm the ingredients Can be done. At this time, it is desirable to appropriately adjust the components if necessary.

  As described above, the organic fertilizer of the present invention has a high concentration of fertilizer components, can reduce the amount of fertilization, and can reduce the load of fertilization work. Moreover, since soil improvement and basic fertilization can be applied with a single application, labor saving can be achieved.

  In patent document 1 mentioned above, in order to improve the fertilization effect of garbage, inorganic raw materials, such as urea and ammonium sulfate which are inorganic substances, are mainly added. As a result, the carbonization rate (C / N ratio) was reduced to about 8-10. Chicken manure and sewage sludge are also included, but these are low in N (protein) content, and must have been mainly composed of inorganic urea and ammonium sulfate. And this was heat-dried and the water | moisture content was reduced to 10% or less.

  On the other hand, according to the present invention, the C / N ratio is lowered to 4 to 8 with the organic high protein raw material instead of the inorganic raw material urea as described above.

  The use of organic resources is more effective in environmental conservation agriculture, which is more desirable in the future, and organic materials are desired from the consumer's preference, and more recycled materials are desired. According to the present invention, as described above, the added value (use value) of organic waste such as food waste, mainly food waste such as cooking residues discharged from establishments, is increased. The utilization rate by producers (agricultural producers) can be increased and recycling agriculture can be promoted.

  In the present invention, fermentation treatment is used to reduce the moisture and C / N ratio of organic waste such as food waste, mainly food waste such as cooking residue discharged from business establishments. is doing. Heat drying is only used for stabilization of storage property and transportability after the final pellet is formed. Therefore, the present invention can also contribute to the reduction of fossil energy.

  According to the present invention, granulation molding is performed using only organic materials. Organic wastes such as food-based wastes, mainly food waste such as cooking residues discharged from business establishments, are generally coarse and have poor physical properties. Therefore, pelletization is difficult due to poor granulation. In the present invention, organic waste and C / N ratio of the organic fertilizer to be produced is 4 to 8, and the organic waste is C / A high protein organic substance having an N ratio of 8 or less and a granulation promoting organic substance are mixed and fermented, and pelletized by setting the blending ratio of the granulation promoting organic substance to 10 to 15% by weight as described above. Making it possible. In particular, it was most effective in terms of granulation property when the granulation promoting organic substance was made into rice bran to obtain the above-mentioned blending ratio.

  An example of organic fertilizer production according to the present invention will be described with reference to FIG.

<Measurement and mixing process of organic waste and high protein organic matter>
The following organic waste (fermented food residue compost consisting of raw garbage such as cooking residue discharged from business establishments, etc., dried to about 20% by sun drying), and high Protein organic matter (dried cell fertilizer (manufactured by Asahi Industries Co., Ltd., trade name: dry cell fertilizer No. 52)) and granulation accelerating organic matter (rice bran) were blended.

  The blending ratio was set to 110 in consideration of the loss of water in the fermentation, granulation and drying steps in the process for producing the organic fertilizer according to the present invention.

<Fermentation process>
The raw materials (total weight: 4.32t) are piled up in the sedimentation fermentation yard at the above mixing ratio (deposition height: 1.5m), and the fermentation temperature is confirmed to be 40 degrees from the 5th day for 7 days of fermentation. I did it.

<Granulation, drying / cooling, sieving process>
On the 7th day, granulate using a granulator (die hole: 4 mmφ) in a dry pellet production line, dry with a rotary kiln type hot air dryer, cool with a drum type cooler, and 2.68 t of the organic fertilizer of the present invention. Obtained. The raw material yield was 62.0%. The low raw material yield was due to small lot production, which was thought to be due to the generation of work in process.

The results of the chemical analysis of the product (solid analysis value (%)) were as follows.

The product hardness (Kiya hardness tester) (kgf) was as follows.

<Measurement and mixing process of organic waste and high protein organic matter>
Raw materials mixed and prepared at the following blending ratio (total 5 kg) were weighed and mixed.

  Both organic fertilizers 1 and 2 are organic waste (fermented food residue compost made from raw garbage such as cooking residue discharged from business establishments, etc., and dried to about 20% by sun drying. ), High protein organic matter (dry cell fertilizer (manufactured by Asahi Industries Co., Ltd., trade name: dry cell fertilizer No. 52)) and granulation-promoting organic matter (rice bran).

  Comparative Example 1 uses the same organic waste, high-protein organic substance, and granulation-promoting organic substance as organic fertilizers 1 and 2, and changes only the blending ratio.

The compounding ratio of organic fertilizers 1 and 2 and Comparative Example 1 was as follows.

  In all cases, the mixing ratio was set to 110 in consideration of the loss of moisture in the fermentation, granulation and drying steps in the process of producing the organic fertilizer according to the present invention.

The quality (solid analysis value (%)) of each raw material blended as described above was as follows.

<Fermentation process>
The organic fertilizers 1, 2 and Comparative Example 1 having the above mixing ratios were prepared by adding water so that the water content was 20%, respectively, and a cylindrical fermentation apparatus (Asahi Kogyo Co., Ltd., diameter: 25 cm, height: 30 cm, vent at the bottom) (Diameter: 5 mm) was put into a 20-hole-made vinyl chloride cylinder) and subjected to sedimentation fermentation for 11 days (fermentation temperature of 40 ° C. or more was maintained in 3 days from 5 to 7 days).

<Granulation, drying / cooling, sieving process>
After the fermentation process was completed, each of the organic fertilizers 1 and 2 and Comparative Example 1 was passed once through an extrusion test apparatus (die diameter: 20 cm, die hole: 4 mmφ), and then the whole amount was passed again.

  Next, after drying with hot air at 80 ° C. for 3 hours with a ventilation shelf dryer, sieving was performed with a 4 mm sieve.

<Characteristic examination>
The results of chemical analysis (solid analysis value (%)) of each product were as follows.

Product hardness (Kiya hardness tester) (kgf), granulator current value load (A), granulator passage rate (kg / hour), granulation yield (4mm over product ratio) (%) It was as follows.

  According to the above examination, the organic fertilizers 1 and 2 both had a low C / N ratio of 8 or less, and were suitable for granulation production.

  On the other hand, in Comparative Example 1 in which the blending ratio of the organic waste was increased and the blending ratio of the granulation accelerating organic substance (rice bran) was lowered, the C / N ratio was as low as 7.8. (Granulator current value load (A)) was large and was not suitable for granulation molding.

  In addition, in the organic fertilizer 2, when the same experiment was conducted by decreasing the blending ratio of rice bran and increasing the blending ratio of high protein organic matter so that the total blending ratio became 110, the blending of rice bran When the ratio is 10 to 15, the granulation load (granulator current value load (A)) does not increase, and the hardness is within an appropriate physical hardness range of 1.5 kgf or more and not exceeding 10.0 kgf. I was able to confirm that.

  On the other hand, when the blending ratio of rice bran was less than 10, it was confirmed that the granulator current value load (A) exceeded 20, the load during granulation was increased, and the production efficiency might be lowered.

  Moreover, in the organic fertilizer 2, the blending ratio of rice bran is increased, and accordingly, the blending ratio of organic waste and high protein organic matter is 50 to 70% by weight, 30 to 30%, respectively, so that the blending ratio total becomes 110 The same experiment was conducted with the variation in the range of 50% by weight. In any experiment, when the blending ratio of rice bran exceeded 15, the C / N ratio of the produced organic fertilizer exceeded 8, which was not suitable for the organic fertilizer targeted by the present invention.

(Comparison study test 1)
The pellet-shaped organic fertilizer of the present invention produced in Example 1 (pellet section), the organic waste used as a raw material in Example 1 (food consisting of raw garbage such as cooking residues discharged from establishments, etc.) Residual compost fermented and dried to about 20% by drying in the sun (raw compost), ordinary high-grade fertilizer consisting of ammonium sulfate, phosphorous and chloride (made by Asahi Industries Co., Ltd. Name: Kumiai Complex Rin Kaan 42) (standard zone (advanced chemical conversion)), the fertilizer effect was confirmed as follows (field test).

Test method Test place: Paddy field in Saitama Prefectural Agricultural and Forestry Research Center Paddy field Test soil: Fine gray lowland soil Target crop: Paddy rice (variety: Aya no Kagayaki)

When the yield survey was conducted, the results of the harvest season survey were as follows.

  With the application of each material according to the mineralization rate, yields comparable to the conventional standard zone were obtained. The improvement of fertilization efficiency could be confirmed by the pellet-shaped organic fertilizer of the present invention.

(Comparative study 2)
Pelletous organic fertilizer (eco-pellet) of the present invention produced in Example 1 and organic waste used as a raw material in Example 1 (food consisting of raw garbage such as cooking residues discharged from establishments) The mineralization test was performed as follows on the residue compost) (eco-pellet raw material) to confirm the fertilizer effect.

Mineralization test (Method for evaluating the effectiveness of organic fertilizers)
Organic fertilizers contain proteins (nitrogen-containing organic substances), but in the protein state, they are macromolecules that plants cannot absorb as they are. Proteins are hydrolyzed by microorganisms in the soil to amino acids, and further decomposed and oxidized into nitrogen inorganic compounds such as ammonia and nitric acid. Since it becomes a low molecule in the form of this inorganic compound and is absorbed by plants, a mineralization test is carried out in soil as an evaluation of the fertilizer effect of organic fertilizers.

  The mineralization test was carried out by the following “culture method” and “field burying method”.

Culture method:
Organic fertilizer was mixed with soil in a predetermined amount by a culture method, and ammonia nitrogen + nitrate nitrogen after cultivation for a predetermined period was measured. That is, the generation ratio of inorganic nitrogen (ammonia + nitric acid) relative to the original organic nitrogen was calculated as the mineralization ratio.

Field burying method:
A predetermined amount of soil and fertilizer were mixed and wrapped in a non-woven fabric and planted in an actual field. After a predetermined period of time, the non-woven fabric was extracted, and the mineralization rate was calculated backward from the organic nitrogen of the remaining organic fertilizer.

  The test was performed as follows for the culture method and the field burying method, respectively.

Culture method:
Test soil: Gray lowland soil (Kumaya, Saitama Prefecture)
Gray soil (Yoshikawa, Saitama Prefecture)
Test fertilizer: Eco pellet Test method: Crush 2.5 g of eco pellets (ground product, 500 micron pass), mix with 25 g of each sample soil, put in a culture bottle, fill with pure water and seal tightly to prevent air from entering The gas was removed as appropriate.

    Measurement conditions: set to temperatures of 20 degrees, 25 degrees and 30 degrees with a thermostat, and in an inorganic state on the 0th day, the 10th day, the 20th day, the 30th day, the 60th day, the 90th day and the 120th day The nitrogen (ammonia state, nitrate state) of was measured.

Field burying method:
Test soil: Gray lowland soil (Kumaya, Saitama Prefecture)
Test fertilizer: Eco-pellet
Eco pellet raw material Test method: Each 5 g of eco pellet and eco pellet raw material was pulverized (ground product, 500 micron pass), mixed with 50 g of test soil, packed in a non-woven fabric, and embedded in a paddy field (Kumaya, Saitama Prefecture).

    Measurement conditions: The temperature is the paddy field temperature condition shown in FIG. 3 (a). Total nitrogen and total carbon on the 0th, 10th, 20th, 30th, 60th, 90th and 120th days Was measured.

  The test results were as follows.

Culture method:
The test results are as shown in FIGS. 2 (a) and 2 (b). The mineralization rate was higher as the temperature was higher. In the gray lowland soil, the mineralization rate was 25% or more and 50% or more on the 120th day. Even in gray soil, the mineralization rate was about 50%. It was confirmed that the eco-pellet as the product of the present invention showed a mineralization rate comparable to that of organic fertilizer.

Field burying method:
The test results are as shown in FIG. Similar to the culture method, the eco-pellet as the product of the present invention showed a mineralization rate of 50% or more on the 90th day. On the other hand, the eco-pellet raw material remained at about 20%, and the improvement of fertilizer effect by the eco-pellet as the product of the present invention could be confirmed.

  As mentioned above, although preferable embodiment and the Example of this invention were described, this invention is not limited to these, It can change into various forms in the technical range grasped | ascertained from description of a claim.

Claims (5)

  50 to 70% by weight of organic waste that has been fermented and dried to about 20% by fermentation and drying, and 30 to 50% by weight of high protein organic matter having a C / N ratio of 8 or less, granulation Organic fertilizer obtained by mixing 10-15% by weight of accelerated organic matter, fermenting, granulating, and drying.   The organic fertilizer according to claim 1, wherein the organic waste contains garbage and / or animal and plant residues.   3. The organic fertilizer according to claim 1 or 2, wherein the high protein organic substance having a C / N ratio of 8 or less includes an organic fertilizer comprising a dry cell fertilizer and / or an animal or plant organic fertilizer.   The organic fertilizer according to any one of claims 1 to 3, wherein the C / N ratio is 4 to 8.   50 to 70% by weight of organic waste that has been fermented and dried to about 20% by fermentation and drying, and 30 to 50% by weight of high protein organic matter having a C / N ratio of 8 or less, granulation A method for producing an organic fertilizer, wherein 10 to 15% by weight of an accelerated organic substance is mixed, fermented, granulated and dried.

Images