KR100413299B1 - Manufacturing method of organic fertilizer - Google Patents

Abstract

The present invention relates to a method for producing an organic fertilizer using livestock waste and / or activated sludge as a fermentation raw material. (I) 55 to 65% by weight of the fermented raw material, pH 7.0 to 8.5 and C / Adjusting the N ratio to 20 or less; And (ii) fermentation by adding bran or bran mixture to the adjusted product obtained in the above-mentioned step (i) at a ratio of 25 to 50 parts by weight (in terms of dry matter) relative to 100 parts by weight (in terms of dry matter) of the fermented raw material. It includes a process to make.

Description

Manufacturing method of organic fertilizer

The present invention relates to a process for producing organic fertilizers using livestock waste and / or activated sludge as the fermentation raw material and the organic fertilizers thus obtained. In more detail, the present invention uses at least one of livestock waste and activated sludge, which has been conventionally considered as a fermentation raw material, to produce a high-quality organic fertilizer having excellent fertilizer effectiveness in a short time using a specific process. It relates to a method for preparing organic fertilizer which can be obtained, and to an organic fertilizer obtained thereby.

The chemical fertilizers used so far have immediate effects, but problems such as poor growth of plants due to concentration disturbances, dead soil, and dryness of the ground due to serialization and environmental pollution are caused. Therefore, organic fertilizers have recently been reassessed as a solution to these shortcomings of chemical fertilizers.

On the other hand, animal wastes such as poultry meal, pig meal, cow meal, etc. are discharged from the livestock industry, and a large amount of activated sludge is discharged by microbial treatment of organic waste. The handling or treatment of these animal excreta and activated sludge has been considered in the past, and organic fertilizers using animal excreta and activated sludge have been tried in various ways in view of their smooth processing and effective use.

Organic fertilizers obtained by fermenting animal excreta or activated sludge are different from those of chemical fertilizers, and the intellect is enhanced so that the growth of plants is accelerated and the soil is not dried up and the environment is not polluted. There is an advantage. However, animal excreta and activated sludge have high water content, mixed various components and unstable pH, so that the balance of microbial flora (microorganisms) contained therein is unbalanced and useful microbial groups effective for fermentation are difficult to grow. . Therefore, the air permeability is poor, anaerobic state, the fermentation does not proceed smoothly or smells for a long time. Especially in winter when the ambient temperature is low, fermentation rarely proceeds and the composting takes longer.

Therefore, when manufacturing organic fertilizers using animal excrement or activated sludge, it is common to mix vegetable fertilizers such as sawdust, barley straw, rice straw, and fallen leaves with fermented raw materials, and then ferment after adjusting the moisture content. Is being used. However, since vegetable organic matter such as sawdust contains a large amount of hardly decomposable components, when fermented by mixing with animal excrement or activated sludge, there is a drawback that usually requires a long period of 3 to 6 months to obtain a mature compost. In addition, there is a drawback that the growth of the plant is inhibited by the phenolic acid component is contained in the organic fertilizer phenolic acid component generated by the decomposition of the lignin component contained in the vegetable organic matter.

Therefore, in order to remedy the above-mentioned drawbacks, compost and organic vegetable oils or their waste oils are added and mixed with organic wastes having high moisture content such as livestock manure to adjust the water content to 65% or less, and then fermented to produce compost. Method [Reference: Japanese Patent Publication No. 55-37517] and organic sludge discharged from a livestock treatment plant, etc., by mixing rapeseed oil and / or castor oil foil to adjust the moisture content to 55 to 65% A method of producing organic fertilizer by fermentation (Japanese Patent Laid-Open No. Hei 3-290386) and the like have been proposed. However, according to these conventional methods, it is expensive and uneconomical to reduce the water content of organic wastes such as livestock manure or organic sludge to be suitable for fermentation, since it is necessary to use relatively expensive animal or vegetable fats or residues thereof. The generation of ammonia at the time of fermentation has a drawback that the smell is strong.

Under the circumstances described above, the present inventors have been searching for a method that can smoothly compost livestock waste such as livestock manure or other organic waste. As a result, the product obtained by blending organic matters such as bran, hydrated lime, fuminic acid and certain microorganisms with arabinoxylol content of 20% by weight or more in a specific ratio is an organic fertilizer having high fertilizer efficacy in a short period of time. And Japanese Patent Application Nos. 6-251532 and 6-312411, which were found to be very effective as fermentation accelerators.

In addition, the present inventors have conducted research from various viewpoints regarding the composting of organic wastes such as livestock wastes. As a result, in the case of using livestock waste and / or activated sludge as the fermentation raw material among organic wastes, its water content is kept in the range of 55 to 65 weight while maintaining a pH in the range of 7.0 to 8.5 and a C / N ratio of 20 or less. After adjusting to the range of%, fermented with bran to promote fermentation, organic matter with high fertilizer effect as expected in a short period of time and economically, as expected, while suppressing odor generation by very simple treatment operation without using special fermentation equipment. It was found that fertilizers can be prepared. In addition, the present inventors at this time, instead of using bran alone, the above-mentioned fermentation accelerators (that is, fermentation accelerators composed of organic matter such as bran, slaked lime, humic acid and certain microbial substances) developed by the present inventors in bran. The use of bran mixtures containing or bran mixtures containing one or more of minerals, hydrated lime, humic acid, microbial substances and other fermentation-promoting components may further enhance fertilizer effectiveness in livestock waste and / or activated sludge. It has been found that good organic fertilizers can be obtained in a shorter fermentation period and the present invention has been completed based on this finding.

Therefore, the present invention provides a method for preparing organic fertilizers using livestock waste and / or activated sludge as a raw material for fermentation (i) the water content of the fermented raw material consisting of livestock waste and / or activated sludge, 55 to 65% by weight, pH Adjusting 7.0 to 8.5 and the C / N ratio to 20 or less; And (ii) adding fermented wheat bran to the adjusted product obtained by step (i) at a rate of 25 to 50 parts by weight (converted to dry matter) relative to 100 parts by weight of fermented raw material (converted to dry matter). It relates to a method for producing an organic fertilizer characterized in that.

And the present invention includes an organic fertilizer prepared according to the above method.

The present invention is described in detail below.

As used herein, the "livestock waste" used as the fermented raw material of the present invention is a manure, chicken, quail, turkey, duck, duck, duck which occurs in the production or production of pigs, cattle, horses, sheep, goats and other livestock. Manure that arises from the breeding or production of poultry, and manure that occurs from the breeding or production of livestock or poultry, and wastes discharged from the processing plants (such as slaughtering, decommissioning, processing, etc.) of the livestock or poultry; It may be one of the.

In addition, activated sludge may be used as a fermented raw material in the present invention, and the type and content of activated sludge are not limited at all. That is, the activated sludge method which performs aerobic biotreatment using activated sludge in the presence of air or oxygen as a method of treating or purifying organic waste liquid is widely known. The activated sludge method is, for example, food manufacturing industry or textile industry. It is widely used in various fields such as paper pulp industry, chemical industry, leather manufacturing and sewage treatment plant. In the case of treating organic wastewater or sewage of various industries using the activated sludge method, a large amount of activated sludge is discharged as a surplus sludge during the treatment thereof, but in the present invention, a surplus sludge is used by using such activated sludge method. Any of the activated sludge generated as can be used, and its origin and properties of the activated sludge are not limited at all.

In the present invention, each of the livestock waste and the activated sludge may be used alone or in combination with the livestock waste and the activated sludge.

In the present invention, the above-mentioned fermentation raw material consisting of livestock waste and / or activated sludge is first performed as described above (hereinafter, referred to as "adjustment process (i)"). The water content, pH, and C / N ratio of the livestock waste and activated sludge before the adjustment process (i) may differ depending on the origin or type of the livestock waste or the activated sludge, and the water content is generally 70% by weight or more, Almost half are 75 to 85% by weight, pH is about 5 to 9, and C / N ratio is about 5 to 50, and the moisture content, pH and C / N ratio are adjusted in the adjustment process (i) in the present invention. It is set as the product whose content is 55-65 weight%, pH is 7.0-8.5, and C / N ratio is 20 or less, Preferably it is 10-20 (Hereinafter, this may be called "adjusted product.").

The moisture content of the water-containing conditioned product of the fermented raw material consisting of livestock waste and / or activated sludge before carrying out the adjusting step (i) referred to in the present invention is the weight loss rate when dried at 130 ° C. for 2 hours. And the details thereof are as described in the Examples below.

In addition, the C / N ratio of the fermented raw material consisting of livestock waste and / or activated sludge and the C / N ratio of the adjusted product before carrying out the adjustment step (i) according to the present invention are the total carbon (C) by the C / N coder. ) Value and total nitrogen (N) amount, and the value when expressed by the ratio (C / N) and the details thereof are as described in the following Examples.

In addition, the pH of the fermented raw material which consists of a livestock waste and / or activated sludge, and pH of an adjusted product before performing the adjustment process (i) said in this invention mean the value when it measures at normal temperature (25 degreeC).

In general, reducing the water content of livestock waste and / or activated sludge may cause a significant change in pH and, in some cases, a significant increase in the C / N ratio. N ratio is 20 or less, Preferably it is necessary to adjust to 10-20.

If the pH of the adjustment product obtained in the adjustment step (i) is less than 7.0 or more than 8.5, useful organic microorganisms that promote the composting in the next step (ii) do not work well and have high fertilizer effectiveness in a short time. It cannot be obtained. In order to smoothly perform the next step (ii) (fermentation step) in a short time, the pH of the adjusted product obtained in the adjusting step (i) is preferably in the range of 7.5 to 8.0.

In addition, if the moisture content of the crude product obtained in the adjustment step (i) is less than 55% by weight, the fermentation may not be sufficiently performed, and the fermentation may be stopped. On the other hand, if the content exceeds 65% by weight, the anaerobic fermentation becomes stronger and results. As a result, the fermentation rate of the compost is lowered, so that in any case, the fermentation does not proceed in the short term in the next step (ii) and high quality organic fertilizer cannot be obtained in a short fermentation period. In order for the next step (ii) (fermentation step) to proceed smoothly in a short time, it is preferable that the water content of the adjusted product obtained in the adjusting step (i) is in the range of 58 to 63% by weight.

In addition, if the C / N ratio of the crude product obtained in the crude step (i) is higher than 20, fermentation does not proceed smoothly in a short time in the next stage (ii) as expected, and high quality organic fertilizer is not obtained in a short fermentation period. The C / N ratio of the adjusted product is 10 to 20 to allow the fermentation of the next step (ii) to be carried out smoothly in a short period of time, and to use the mature fermentation compost or minerals described after use in the adjustment step (i). In addition to being small, it is desirable from an economic point of view.

In the adjusting step (i), the water content of the adjusting product does not vary significantly from the pH of the fermented raw material consisting of livestock waste and / or activated sludge and the C / N ratio of the adjusting product is not higher than before the adjusting. As a method in the range of 55 to 65% by weight

① The mature fermentation compost (generally its water content is 40 to 50% by weight and the C / N ratio is 20 or less) is added to the fermented raw material consisting of livestock waste and / or activated sludge. The method of adding at the ratio which becomes 65 weight%.

② A method in which minerals such as vermiculite, perlite, zeolite, and diatomaceous earth are added to a fermented raw material consisting of livestock waste and / or activated sludge at a rate such that the water content of the adjusted product is in the range of 55 to 65% by weight.

③ A method of adding the fermented compost used in the method ① above and the minerals listed in ② to the fermented raw material consisting of livestock waste and / or activated sludge at a rate of 55 to 65% by weight of the crude product. Etc. can be used preferably.

As the fermented compost used in the methods of ① and ③ described above, any fermented compost having a C / N ratio of 20 or less may be used, and its manufacturing method or origin thereof is not particularly limited. Among these, it is simple and preferable to use a part of the organic fertilizer obtained through the process (ii) of the present invention as a fermented compost in the method of ① and ③ in the form of so-called "recovering compost". When immature compost having a C / N ratio of more than 20 is used in the adjustment step (i), fermentation becomes unstable in the next step (ii), and high quality organic fertilizer is hard to be obtained in a short time. In addition, the immature compost has a high moisture content of 55% by weight or more, so if the adjustment process (i) is performed using immature compost, it is necessary to add a large amount of immature compost in the adjustment process (i), thereby increasing the amount of work. It is also undesirable from a cost point of view.

If the cost is not a problem, use the method ② in which the adjustment process (i) is carried out using minerals such as vermiculite, perlite, zeolite, and diatomaceous earth, or ③ in combination with mature fermentation compost and the mineral. It is preferable to implement, and the method of (2) is especially preferable. When using minerals, one kind of mineral may be used or two or more may be used in combination. The mineral has a porous structure, has excellent water absorption, can maintain the fermented raw material in an aerobic environment, and the mineral itself does not decompose and has little effect on the pH and C / N ratio of the fermented raw material to which it is added. Therefore, when the adjustment step (i) is carried out using the minerals described above, the water content thereof can be easily adjusted to 55 to 65% by weight while maintaining the pH of the adjusted product at 7.0 to 8.5 and the C / N ratio below 20. have. In addition, the crude product thus obtained has good fermentation properties, and the fermentation of the next step (ii) can be performed very well in a short time.

Although differently obtained by the water content, pH, C / N ratio, etc. of livestock waste and / or activated sludge before performing the adjustment process (i), the adjustment process (i) which uses a mature fermentation compost alone is performed. In general, a ratio of about 150 to 300 parts by weight of mature fermented compost with respect to 100 parts by weight of a fermented raw material consisting of livestock waste and / or activated sludge (total amount thereof when using both livestock waste and activated sludge) is used. When it is added, it is possible to smoothly obtain an adjusted product having a water content of 55 to 65% by weight, a pH of 7.0 to 8.5 and a C / N ratio of 20 or less. In addition, in the case of performing the adjusting step (i) using only the minerals, 100 parts by weight of a fermented raw material (generally the total amount thereof when both livestock waste and activated sludge is used) consisting of livestock waste and / or activated sludge On the other hand, when minerals are added at a ratio of about 50 to 100 parts by weight, it is possible to smoothly obtain a crude product having a water content of 55 to 65% by weight, pH 7.0 to 8.5 and a C / N ratio of 20 or less. In addition, when the adjustment step (i) is carried out using both fermentation compost and minerals, the water content, pH and C / N ratio of the adjusted product can be made within the scope of the present invention by appropriately adjusting the use ratio of both. .

Organic fertilizers can be obtained by fermenting the crude product obtained in the adjusting step (i) as it is, but obtaining a good organic fertilizer (fermentation compost) usually takes a long period of 1 to 2 months until the end of the fermentation, and in the meantime Odor occurs due to the occurrence of a long time and high quality organic fertilizers can not be obtained smoothly in a short time.

Therefore, in the present invention, a high-quality organic fertilizer having excellent fertilizer efficacy is smoothly produced in a short time by carrying out the step (ii) of fermenting by adding the bran or bran-based mixture to the fermentation product obtained in the adjusting step (i). do.

Bran is the shell of wheat grains and is produced primarily as a flour by-product when milling wheat. The bran contains a high concentration of hemicellulose components (typically about 35% by weight), and the hemicellulose components contained in the bran are characterized by containing arabinoxysilane containing a lot of arabinose side chains.

On the other hand, rice bran, gluten feed, etc. may be mentioned as containing the same ingredient as bran, but when using these, fermentation promoting effect is smaller than bran, and fermentation promoting action using bran is very excellent compared with other things. .

The reason why the fermentation promoting action is particularly excellent in the fermentation system of the present invention using livestock waste and / or activated sludge as compared with rice bran or gluten feed is not clear and is believed to be due to the following reasons.

In other words, microorganisms capable of decomposing arabinoxysilane can be selectively grown when bran is added to the adjusted product in the adjusting step (i), and these microorganisms effectively act on the fermentation of the fermented raw material consisting of livestock waste and / or activated sludge. The bran has a C / N ratio of around 15 (in this regard, a C / N ratio of rice bran = about 10 and a C / N ratio of gluten feed = about 10) and a low moisture content of less than 15% by weight (in this regard). Water content of rice bran = about 20% by weight and gluten feed content = about 15% by weight), as a result, many voids are formed in the fermentation system, and microorganisms having the ability to decompose expanded arabinoxysilane work actively and smoothly. It is estimated to obtain organic fertilizer with high fertilizer potency.

And a fermented raw material consisting of livestock waste and / or activated sludge used to obtain the adjusted product in the adjustment step (i) when performing step (ii) in the present invention (when using both livestock waste and activated sludge) It is necessary to carry out the fermentation by adding 20 to 50 parts by weight of the total amount of bran or the bran as a main component to 100 parts by weight (converted to dry matter) in the proportion of 20 to 50 parts by weight (converted to dry matter). If the addition ratio is less than 25 parts by weight (converted to dry matter), the fermentation progresses slowly and the fermentation heat does not go up, so the fermentation does not proceed smoothly, and thus high quality organic fertilizer cannot be obtained in a short time. During the fermentation process did not proceed smoothly as expected, a high quality organic fertilizer could be obtained in a short time. It is impossible. In general, the amount of added bran or bran mixture is preferably 30 to 45 parts by weight (in terms of dry matter) based on 100 parts by weight (in terms of dry matter) of the fermented raw material consisting of livestock waste and / or activated sludge.

In the present invention, the material for promoting the fermentation used in the step (ii) as described above may be one of bran alone or a mixture containing bran as a main component. In any case, the origin, production method, content, and the like of the bran used herein are not particularly limited and may be any bran obtained from the wheat.

When using a bran mixture as a material to promote fermentation, the bran contains at least 50% by weight, preferably at least 70% by weight, based on the total weight of the bran mixture, while the rest (less than 50% by weight) do not inhibit fermentation. Any bran mixture consisting of ingredients not used may be used. Among them, bran is a kind of component that promotes fermentation with bran, for example, hydrated lime, useful microorganisms, humic acids such as humic acid and huruboic acid, minerals such as vermiculite, perlite, zeolite, and diatomaceous earth. It is preferable to add and use the above so that the fermentation of step (ii) can be performed smoothly in a shorter period.

In addition, in step (ii), instead of adding and using a component that promotes fermentation to bran, (a) Japanese patent application including bran, hydrated lime, humic acid and certain microbial substances previously developed by the present inventors ( (6) Use only the fermentation promoters described in No. 6-251532 and No. 6-312411, or (b) fermentation promoters containing bran, hydrated lime, humic acid and certain microbial substances of these sources. You can use the added one.

And in any of (a) and (b) the livestock waste and / or activated sludge as the material which promotes the fermentation used in the process (ii) contains a fermentation facilitator consisting of bran, slaked lime, humic acid and certain microbial substances. The fermentation of is further promoted, and a high quality organic fertilizer excellent in fertilizer effectiveness can be obtained in a shorter time.

As the fermentation accelerator used in (a) and (b), one of the following fermentation accelerators (1) to (3) can be used.

Fermentation promoter (1)

Fermentation accelerator consisting of 100 parts by weight of bran, 1 to 3 parts by weight of lime, 3 to 10 parts by weight of humic acid and 5 to 20 parts by weight of microbial material, wherein the microbial material is 50 to 80 parts by weight of bran and the adsorbent mineral material and / or carbon A mixture consisting of 50 to 20% by weight is used as fermentation raw material and in the presence of Aspergillus flavus, Aspergillus oryzae and / or Aspergillus sojae. It is obtained by primary fermentation followed by secondary fermentation in the presence of Streptomyces genus Actinomycetes, Pseudomonas genus bacteria and / or Bacillus genus bacteria.

Fermentation promoters (2)

Fermentation promoter consisting of 100 parts by weight of bran, 1 to 3 parts by weight of lime, 3 to 10 parts by weight of humic acid, and 5 to 20 parts by weight of microbial material, wherein the microbial material is streptomyces actinomycetes, Pseudomonas bacteria and / or Bacillus bacteria were added and the pH of the bran was adjusted to 6.0 to 12.0 to start the fermentation, and the fermentation was obtained by maintaining the pH of the bran in the range of 6.0 to 9.5 during the fermentation.

Fermentation promoters (3)

A fermentation accelerator consisting of 100 parts by weight of bran, 1 to 3 parts by weight of lime, 3 to 10 parts by weight of humic acid and 5 to 20 parts by weight of microbial material, wherein the microbial material is an adsorbent mineral material of equal to or less weight than the bran and bran. Or Streptomyces actinomycetes, Pseudomonas bacteria and / or Bacillus bacteria are added to the mixture consisting of carbons and the pH of the mixture is adjusted to 6.0 to 12.0 to initiate fermentation and the pH of the mixture during fermentation is adjusted to 6.0 to 12.0. It is obtained by starting the fermentation and fermentation by maintaining the pH of the mixture during fermentation in the range of 6.0 to 9.5.

Here, the humic acid used in the fermentation promoting material (1) to the fermentation promoting material (3) is all good as long as it is an alkali soluble amorphous polymer organic acid contained in young coals such as peat and peat having low coalization, and may be artificial or natural. . It is also possible to use nitrofumic acid and dyes thereof obtained by pulverizing young carbon which is a raw material of artificial humic acid and oxidatively decomposing with nitric acid. Instead of humic acid, a substance containing humic acid such as peat, atan, etc. may be used, and the humic acid, nitrofumic acid or salts thereof separated from these without the use of young carbons such as peat or attan. It is preferable to use the microorganisms in a small amount so that the microorganisms useful for composting can be grown.

Moreover, about the microorganism substance used by the fermentation promoter 1, it can generally manufacture as follows.

Manufacturing method of microbial material used in fermentation promoting material (1)

50 to 80%, preferably 60 to 70% of bran and at least one of adsorbent mineral materials such as zeolites and vermiculite, and at least one of coals such as charcoal, hultan, chaff, activated charcoal and bone char In a mixture composed of 40 to 30%, fermentation raw materials are preferably formed by mixing nitrogen source such as ammonium sulfate or superphosphate, inorganic fertilizer component such as potassium source, iron source in an amount of about 5% or less in some cases. The fermentation raw material is sterilized to kill various germs, and then first fermented in the presence of at least one of the bacteria consisting of Aspergillus flavus, Aspergillus duckase and Aspergillus soya.

The fermented product whose pH was adjusted to 6.0 to 7.5 was then preferably present in the presence of one or more of Streptomyces actinomycetes, Pseudomonas bacteria, and Bacillus bacteria that can resource the bran. The pH is fermented secondary at 6.0-9.0, more preferably at pH 7.0-7.5. At this time, as Streptomyces actinomycetes, in particular, Streptomyces heimi, Streptomyces flaveolus, Streptomyces misionensis, Streptomyces fumanus Fungi such as Streptomyces albulus and Streptomyces griseofuscus are useful because of their high resource efficiency. Examples of useful Pseudomonas bacteria include Pseudomonas fluorescens and Pseudomonas putida. Examples of useful Bacillus bacteria include Bacillus circulans and Bacillus subtilus. subtilis), and the like. Streptomyces actinomycetes, Schnamonas bacteria, and Bacillus bacteria used in the secondary fermentation are all well known and can be used commercially available or available for sale. It is described in the specification of (JP) 6-72900.

When the secondary fermentation is carried out as described above, the fungi added for secondary fermentation in the fermentation product are multiplied in the fermentation product at the end of the secondary fermentation, and a smooth, fine particulate microorganism material is obtained.

In addition, the microbial material used in each of the fermentation accelerators (2) and (3) can generally be produced as follows.

Manufacturing method of microbial material used in fermentation promoting material (2)

As the fermentation raw material, at least one of Streptomyces actinomycetes, Pseudomonas bacteria and Bacillus bacteria is added to the bran as fermentation raw material, and the fermentation raw material is adjusted to 6.0 to 12.0 to start the fermentation. Prepared by fermentation with adjusting pH to maintain.

Manufacturing method of microbial material used in fermentation promoting material (3)

One or more of Streptomyces actinomycetes, Pseudomonas bacteria and Bacillus bacteria is added to the fermentation raw material consisting of a mixture of wheat bran and one or more selected from adsorbent minerals and coals having an equivalent weight or less with respect to the wheat bran. Fermentation is initiated by adjusting the pH to 6.0 to 12.0 and prepared by fermentation while adjusting the pH so that the pH of the fermentation raw material is maintained in the range of 6.0 to 9.5 during fermentation.

And in the process (ii) of the present invention, fermentation is carried out by adding a bran or bran mixture to the adjusted product from the adjusting step (i) in the above-mentioned ratio to produce an organic fertilizer. As far as possible by stirring (cutting over), it is preferable to shorten the fermentation time and to obtain organic fertilizers with high fertilizer efficacy, where possible under aerobic conditions, where stirring (cutting overturning) is usually carried out in 1 week. It is enough to carry out about 5 times.

And up to about half of the total weight of the fermented raw material consisting of livestock waste and / or activated sludge and the bran or bran mixture used in process (ii) or the fermented raw material and process consisting of livestock waste and / or activated sludge ( If the weight or volume of the fermentation product is reduced to half of the total volume of the bran or bran mixture used in ii), the fermentation is often carried out sufficiently to become a mature compost (organic fertilizer), which is used as an organic fertilizer. It is good to do.

Since the time required for the fermentation in the case of the method of the present invention described above is short, the generation period of ammonia, which is the cause of odor, is short, and the obtained organic fertilizer is carried out in a sufficiently good state and no odor or odor. In addition, since the decomposition proceeds to a fine state of fineness, the handleability is excellent and can be effectively used as a fertilizer for plants such as cereals, plants, fruit trees, grass, and other trees represented by vegetables, rice or barley. In this case, the method of fertilizing the organic fertilizer of the present invention on plants can be carried out in the same manner as in the case of the conventional organic fertilizer, and is not particularly limited.

Example

The present invention will be specifically described below with reference to Examples and the like, but the present invention is not limited thereto. In the following example, the water content of the livestock waste and activated sludge and the adjusted product thereof before performing the adjusting step (i), the C of the fermented raw material and the adjusted product consisting of the livestock waste and the activated sludge before performing the adjusting step (i). The / N ratio, the growth rate of N. nachos, and the measurement of actinomycetes in organic fertilizers obtained by fermentation are performed as follows.

Determination of Moisture Content in Fermented Raw Materials and Their Modified Products

20 g of the sample is placed in a stainless steel container (10 cm x 15 cm x 2 cm) and dried by dry heat at 130 ° C. for 2 hours. Then, the weight reduction rate is obtained, which is determined as the moisture content (%).

Determination of the C / N ratio of the fermented raw material and its adjusted product

0.5 g of the sample is placed in a sample tube, and the total amount of carbon (c) and total amount of nitrogen (N) is determined using a C / N coder (manufactured by Sumitomo Chemical Co., Ltd .; NC-90A), and the ratio thereof (C / N) Obtain

Growth rate of Nanoacho

Using the organic fertilizers obtained in the examples or the comparative examples, the growth test for N. nachos was carried out as follows to evaluate the growth rate.

30 ml of water is added to 1 g of organic fertilizer, stirred, and left at 60 ° C. for 3 hours. Subsequently, 2 ml of the filtrate obtained by filtration using filter paper (Toyoro-shi No. 5) was put in two pieces of filter paper (Toyo-ro-shi No. 2) and placed in a shale, sprinkled about 30 seeds of Nanoacho and 25 ° C. Incubate in a thermostat. Cultivation was carried out for 4 days, and the growth rate of Nanoacho was scored by 10 panelists in accordance with the evaluation criteria described in Table 1 below to obtain an average value thereof.

Table 1

[Evaluation Criteria for Nourishment Growth]

Method of measuring actinomycetes

When the glass fertilizer obtained in Examples or Comparative Examples becomes about 1/2 of the total weight of the fermentation promoting material mainly containing livestock waste or activated sludge, and the wheat bran or bran used in the process (ii). A part of the obtained organic fertilizer] is taken and its actinomycetes are measured using a diluted agar plate culture method as follows.

10 g of starch per liter of water, 0.3 g of casein, 2 g of KNO _3, 2 g of NaCl, ₂ g of K ₂ HPO ₄ , 0.05 g of MgSO ₄ · 7H ₂ O, 0.02 g of CaCO ₃ , 0.01 g of FeSO ₄ · 7H ₂ O, 18 g of agar and Using agar plate medium (pH 7.2) prepared by adding 0.06 g of cycloheximide (preservative), the number of colonies when incubated at 30 ° C. for 6 days is measured.

Example 1

(1) milk powder (80% by weight moisture content, pH 8.1, C / N ratio 16.5) matured milk powder / sawdust compost (5% water content, pH 7.8, C / N ratio 18.5; 5 kg sawdust to 25 kg sawdust 25 kg Add and add 6.5 kg of compost, obtained by fermentation for 4 months, to obtain a crude product having a water content of 60% by weight, pH 8.0 and a C / N ratio of 17.6 [adjustment step (i)].

(2) 0.4 kg of bran (water content of 14% by weight) was added to 11.5 kg of the adjusted product obtained in (1) above (a ratio of 0.34 kg of bran dry matter to 1 kg of dry milk), followed by mixing and stirring. It is placed in a foamed styropol container of x width x depth = 26 cm x 34 cm x 30 cm and left in a room at which the temperature is set at 25 ° C. and stirred at a rate of once every 2 days to measure the weight loss over time. An organic fertilizer is produced by using the fermentation end point as the total weight of the fermented raw milk powder and wheat bran, which is 5.4 kg and the weight is reduced to 2.7 kg, which is 1/2 of the fermentation raw material (step (ii)). At this time, the date until reaching the end point of fermentation was counted, and the growth rate and the number of actinomycetes were measured by the above-described method using the organic fertilizer obtained here. Comes out.

Example 2

(1) Active sludge (85% by weight of water, pH 7.9, C / N ratio 7.9) Composting ripened manure / sawdust compost (5% by weight of water, pH 7.8, C / N ratio 18.5; sawdust at 10 kg of milk) 7 kg of compost obtained by fermentation for 4 months with 25 kg was added and mixed to obtain an adjusted product having a water content of 62% by weight, pH 7.9, and a C / N ratio of 14.1 [Step (i)].

(2) A bran mixture obtained by mixing 0.3 kg of bran (water content 14% by weight), 10 g of humic acid ("nitrofumic acid" manufactured by Ternite), and 10 g of slaked lime to 12 kg of the adjusted product obtained in (1). Fermentation preparation: (Branch content 93.8% by weight) was added (mixing ratio of 0.35 kg of bran dry matter to 1 kg of activated sludge dry), followed by mixing and putting it into a foamed styropol container having length x width x depth = 26 cm x 34 cm x 30 cm Fermentation was carried out in the same manner as in Example 1 to prepare an organic fertilizer using the point at which the total weight of the activated sludge and wheat bran mixture, which were the fermented raw material, was about 5.3 kg and the weight was reduced to 2.65 kg, which is 1/2 of the fermentation raw material. do. At this time, the date of counting until the fermentation end point was measured, and the growth rate of the N. nachos and the measurement of actinomycetes were measured by the above-mentioned method using the organic fertilizer obtained here. The results are shown in Table 2 below.

Example 3

(1) 2 kg of vermiculite (water content of 10% by weight, pH 7.2) is added and mixed with 5 kg of pig meal (water content of 75% by weight, pH 7.6, C / N ratio 13.2) to 56% by weight of water, pH 7.5 and A crude product having a C / N ratio of 13.2 is obtained (step (i)).

(2) 0.45 kg of bran (water content 14% by weight) was added to 7 kg of the adjusted product obtained in (1) above (a ratio of 0.31 kg of bran dried to 1 kg of dried pig), followed by mixing and stirring, which was then vertical x Fermentation was carried out in the same manner as in Example 1 below in a foamed styropol container having a width x depth = 26 cm x 34 cm x 30 cm, and the total weight of the fermented raw materials, such as pig flour and bran, was 5.45 kg and the weight thereof was 2.73 kg. Organic fertilizers are prepared using this reduced time point as the fermentation end point. At this time, the date until reaching the end point of fermentation was counted, and the growth rate and the number of actinomycetes were measured by the above-described method using the organic fertilizer obtained here. Comes out.

Comparative Example 1

(1) milk powder (80% by weight moisture content, pH 8.1, C / N ratio 16.5) matured milk powder / sawdust compost (5% water content, pH 7.8, C / N ratio 18.5; 5 kg sawdust to 25 kg sawdust 25 kg 6 kg of compost obtained by fermentation for 4 months) was added and mixed to obtain a crude product having a water content of 60% by weight, pH 8.0 and a C / N ratio of 17.6 [adjustment step (i)].

(2) 0.4 kg of rice bran (water content of 20% by weight) was added to 11.5 kg of the adjusted product obtained in (1) above (a ratio of 0.32 kg of rice bran dried to 1 kg of dried milk), followed by mixing and stirring. x width x depth = 26cm x 34cm x 30cm in a foamed styropol container and fermentation was carried out in the same manner as in Example 1 to the total weight of the fermented raw milk powder and rice bran is 5.45kg, 1/2 of it up to 2.73kg Organic fertilizers are prepared with the end point of fermentation as the weight loss. At this time, the date until reaching the end point of fermentation was counted, and the growth rate and the number of actinomycetes were measured by the above-described method using the organic fertilizer obtained here. Comes out.

Comparative Example 2

(1) Moisture content 63 weight by adding and mixing 4 kg of straw (water content 35% by weight, pH 6.8, C / N ratio 67.0) with 5 kg of activated sludge (water content of 85% by weight, pH 7.9, C / N ratio 7.9) A crude product of%, pH 7.4 and C / N ratio 34.2 is obtained [step (i)].

(2) To 9 kg of the above-adjusted product obtained in (1) above, add bran mixture (bran content of 93.8% by weight) consisting of 0.3 kg of bran (water content of 14 weights), 10 g of humic acid and 10 g of hydrated lime. The ratio of 0.35 kg of bran dry matter to 1 kg of sludge dry matter) was mixed and stirred, and then put into a foamed styropol container having length x width x depth = 26 cm x 34 cm x 30 cm, followed by fermentation in the same manner as in Example 1 below. An organic fertilizer is prepared using the point at which the total weight of the phosphorus activated sludge and bran mixture is about 5.3 kg and the weight is reduced to 2.65 kg, which is 1/2 thereof. At this time, by counting the date until reaching the end of fermentation, and using the organic fertilizer obtained here, the growth rate of the Nanoacho and the measurement of the actinomycetes by the above-described method, the results are shown as shown in Table 2 below.

Comparative Example 3

Add 2.5 kg of wheat bran (water content 15% by weight, pH 6.5, C / N ratio 15.0) directly to 5 kg of pig meal (75% by weight of water, pH 7.6, C / N ratio 13.2) After mixing and stirring 1.7 kg of the dried product), it was put into a foamed styropol container having length x width x depth = 26 cm x 34 cm x 30 cm, and fermentation was carried out in the same manner as in Example 1 below, and the sum of the fermented raw materials such as pig flour and wheat bran. Organic fertilizer is prepared by using the fermentation end point when the weight is reduced to 7.5 kg and its weight is reduced to 3.75 kg, which is 1/2. At this time, the date until reaching the end of fermentation was counted, and the growth rate and the number of actinomycetes were measured by the above-described method using the organic fertilizer obtained here. Comes out.

TABLE 2

From the results of Table 2, the moisture content of the fermented raw material consisting of livestock waste (fertilizer or pig meal) or activated sludge was adjusted to 55 to 65% by weight, pH to 7.0 to 8.5 and C / N ratio to 20 or less, followed by bran or Example wherein fermentation promoting material based on bran is added and fermented at a ratio of 25 to 50 parts by weight (converted to dry matter) based on 100 parts by weight (converted to dry matter) composed of livestock waste or activated sludge. In the case of 1 to 3, the fermentation time is reduced to half of the initial total weight of the fermented raw material and wheat bran. The fermentation time required is all shortened to 18 days or less, and the obtained organic fertilizer has a large number of actinomycetes, which are useful microorganisms. It is also found that the growth of N. nachos is also good and the fertilizer efficacy is excellent.

On the other hand, from the results of Comparative Example 1, the moisture content of the fermented raw material consisting of livestock waste (fertilizer) was adjusted to 55 to 65% by weight, pH to 7.0 to 8.5, and C / N ratio to 20 or less, but to promote fermentation. In the case of using rice bran without using bran, the fermentation time required for fermentation and fermentation-promoting material is 1/2, which is 28 days, which is significantly longer than that of Example 1 The organic fertilizer thus obtained has a small number of actinomycetes, which are useful microorganisms, and thus, poor growth of N. nachos and poor fertilizer effectiveness.

In addition, from the results of Comparative Example 2, the water content and pH of the crude product of the fermented raw material consisting of activated sludge are the same range as the present invention, but the C / N ratio is 34.2, which promotes fermentation when the product is extremely high. Even when the bran mixture is used, the fermentation time required to reach 1/2 of the original total weight of the fermented raw materials and fermentation material is 45 days, which is significantly longer than that of Example 2, and the organic fertilizer thus obtained is As the number of actinomycetes, which are useful microorganisms, is low, the growth of N. nachos is poor, and the fertilizer is less effective.

In addition, when the fermentation is carried out by directly applying bran without adjusting the water content, pH and C / N ratio (particularly, the water content) of the fermented raw material consisting of pig meal from the results of Comparative Example 3 The fermentation time required to reach the first half of the total weight of the fermentation raw material and bran is 40 days, which is significantly longer than that of Example 3, and the organic fertilizers thus obtained have a small number of useful microorganisms, so that the fermentation time of N. a. It is also poor and can be seen that fertilizer is not effective.

Reference Example 1

Preparation of Microbial Material Used in Fermentation Promoter (1)

A mixture of 50 kg of bran, 5 kg of zeolite and 25 kg of vermiculite (total 80 kg: 62.5% of bran content in the mixture) is uniformly mixed using a large mixer, and then mixed again by adding 45 kg of water and then using heated steam. Sterilize. The water content of the mixture after sterilization is 40%. Next, 70 g of dry cells of Aspergillus oryzae (IFO 30105) were added and mixed uniformly, followed by primary fermentation for 48 hours under aerobic conditions by adjusting the ambient temperature to 27 ° C. Cut and flip twice during the first fermentation. Subsequently, 70 g of Streptomyces flabeolas (IFO 12768) and Bacillus sucrose (IFO 13640) were added to each other, mixed uniformly, and cut twice during the process by adjusting the ambient temperature to 25 ° C. under aerobic conditions. To ferment for 72 hours to obtain a microbial material.

Reference Example 2

Preparation of fermentation promoting material (1)

Fermentation promoter 1 is prepared by mixing 2 parts by weight of hydrated lime, 5 parts by weight of the same humic acid as used in Example 2 and 5 parts by weight of the microbial material obtained in Reference Example 1 with respect to 100 parts by weight of bran.

Example 4

(1) 2 kg of vermiculite (water content of 10% by weight, pH 7.2) is added and mixed with 5 kg of milk powder (water content of 80% by weight, pH 8.1, C / N ratio 16.5) to 60% by weight of water content, pH 7.6 and A crude product having a C / N ratio of 16.5 is obtained (step (i)).

(2) 0.2 kg of bran (water content 15% by weight) and 0.3 kg of fermentation accelerator (1) obtained in Reference Example 2 were added to 7 kg of the adjusted product obtained in (1) above (to 1 kg of dry milk powder). (A ratio of 0.31 kg of bran dry matter) was mixed and stirred, and then put into a foamed styropol container having length x width x depth = 26 cm x 34 cm x 30 cm and fermentation was carried out in the same manner as in Example 1 below to ferment raw materials and fermented milk powder and fermentation. An organic fertilizer is prepared using a fermentation end point when the total weight of the accelerator is 5.5 kg and the weight is reduced to 2.75 kg, which is 1/2 thereof. At this time, the date until reaching the end of fermentation was counted and the growth rate of the cysts was measured and the number of actinomycetes was measured by the above-mentioned method using the organic fertilizer obtained here. Comes out.

Example 5

(1) 2 kg of vermiculite (water content of 10% by weight, pH 7.2) is added and mixed with 5 kg of milk powder (water content of 80% by weight, pH 8.1, C / N ratio 16.5) to 60% by weight of water content, pH 7.6 and A crude product having a C / N ratio of 16.5 is obtained (step (i)).

(2) 0.5 kg of the fermentation accelerator (1) obtained in Reference Example 2 was added to 7 kg of the crude product obtained in (1) above as a fermentation aid (ratio of 0.27 kg of bran dried product to 1 kg of milk dried product). After mixing and stirring, the resultant was put into a foamed styropol container having length x width x depth = 26 cm x 34 cm x 30 cm, followed by fermentation in the same manner as in Example 1 below, and the total weight of the powdered fermented milk powder and fermentation promoting material (1). Organic fertilizer was prepared using the point at which the weight was reduced to 5.5 kg and half of which was 2.75 kg. At this time, the date until reaching the end of fermentation was counted and the growth rate of the cysts was measured and the number of actinomycetes was measured by the above-mentioned method using the organic fertilizer obtained here. Comes out.

Comparative Example 4

(1) 2 kg of vermiculite (water content of 10% by weight, pH 7.2) is added and mixed with 5 kg of milk powder (water content of 80% by weight, pH 8.1, C / N ratio 16.5) to 60% by weight of water content, pH 7.6 and A crude product having a C / N ratio of 16.5 is obtained (step (i)).

(2) 0.2 kg of bran was added to 7 kg of the adjusted product obtained in (1) above (ratio of 0.17 kg of bran dried product to 1 kg of dry milk), followed by mixing and stirring, which was then vertical x horizontal x depth = 26 cm x 34 cm The fermentation end point is when the total weight of fermented raw materials, flour and wheat bran, is 5.2 kg and the weight is reduced to 2.6 kg, which is 1/2 of the fermented raw material, in the same manner as in Example 1 below. Thus, organic fertilizers are produced. At this time, the date until reaching the end of fermentation was counted and the growth rate of the cysts was measured and the number of actinomycetes was measured by the above-mentioned method using the organic fertilizer obtained here. Comes out.

Reference Example 3

(1) Fermentation promoter (1) is prepared by mixing 20 g of hydrated lime, 50 g of humic acid identical to that used in Example 2, and 100 g of the microbial material obtained in Reference Example 1 to 1 kg of bran.

(2) For 10 kg of livestock manure (mixture of cow and pig manure), the entire amount of the fermentation promoter (1) prepared in (1) is mixed and placed in a foamed styropol container having length x width x depth = 26 cm x 34 cm x 35 cm. (Thickness about 35 cm), the temperature is left in the room of about 15 to 20 ℃ and stirred at a rate of once every two days to measure the weight during fermentation and promote the composition and fermentation of cows and pigs as fermented raw materials An organic fertilizer is prepared using the point at which the total weight of the ash is about 11.2 kg and the weight is reduced to 1/2, 5.6 kg, as the fermentation end point. At this time, the date until reaching the end of fermentation was counted and the growth rate of the cysts was measured and the number of actinomycetes was measured by the above-mentioned method using the organic fertilizer obtained here. Comes out.

TABLE 3

From the results of Table 3 above, after adjusting the moisture content of the fermented raw material consisting of livestock waste (fertilizer) to 55 to 65% by weight, pH to 7.0 to 8.5 and C / N ratio to 20 or less, bran and fermentation accelerator Example 4 and livestock waste fermented by adding a mixture with (1) and adding fermentation at a ratio in the range of 25 to 50 parts by weight (converted to dry matter) with respect to 100 parts by weight (converted to dry goods) consisting of livestock waste. Fermentation promoting material (1) containing bran as a main ingredient (bran mixture) after adjusting the moisture content of the fermented raw material consisting of (milk powder) to 55 to 65% by weight, pH to 7.0 to 8.5 and C / N ratio to 20 or less The fermentation is carried out in the case of Example 5, which is added at a ratio of 25 to 50 parts by weight (converted to dry matter) relative to 100 parts by weight of fermented raw material (converted to dry matter) consisting of livestock waste. Of raw materials and fermentation preparations The fermentation time required to be up to 1/2 of the total weight of the candle is 15 days or less, which is much shorter than Examples 1 to 3, and the organic fertilizer obtained therein is also excellent in the growth of Nan-acho due to the large number of actinomycetes, which are fused microorganisms. It turns out that fertilizer effectiveness is excellent.

In addition, from the results of Table 3 above, the moisture content of the fermented raw material consisting of livestock waste (fertilizer) was adjusted to 55 to 65% by weight, the pH to 7.0 to 8.5 and the C / N ratio to 20 or less, to promote bran and fermentation. In the case of Examples 4 and 5 in which fermentation is carried out by adding only the bran mixture with the ash (1) or the fermentation promoting material (1), the fermentation promoting material as it is without adjusting the moisture content of the fermented raw material consisting of livestock waste ( The fermentation time required is shorter than that of Reference Example 3 in which 1) is directly added to fermentation, and the number of actinomycetes, which are useful microorganisms, is increased. It can be seen that.

On the other hand, from the result of Comparative Example 4, the moisture content of the fermented raw material consisting of livestock waste (fertilizer) is adjusted to 55 to 65% by weight, pH to 7.0 to 8.5 and C / N ratio to 20 or less, but to promote fermentation. When the ratio of the bran to be used is less than 25 parts by weight (converted to dry matter) relative to 100 parts by weight of fermented raw material (converted to dry matter), which is outside the scope of the present invention, 1 / the first total weight of the fermented raw material and bran is 1 / The fermentation time required to reach 2 is 45 days, which is significantly longer than that of Examples 4 and 5, and the organic fertilizer thus obtained has a low number of useful microorganisms such as actinomycetes. It can be seen that.

In the case of the present invention, at least one of livestock waste and activated sludge, which has been conventionally considered for its treatment, is used as a fermentation raw material, and a high-quality organic fertilizer having excellent fertilizer effectiveness is maintained in a short fermentation period while maintaining a good fermentation state. It can be manufactured simply and economically without using an apparatus.

In the case of producing a glass fertilizer in accordance with the present invention, the generation of ammonia or other odors, which are the cause of odors, is suppressed, and the fermentation period is short, so that even if odors occur, the period is shortened.

In addition, to prepare an organic fertilizer in the case of using a bran mixture containing at least one component which is mainly composed of bran as a material for promoting the fermentation and at the same time, a fermentation promoting component such as minerals, slaked lime, humic acid, microbial substances, etc. The fermentation period can be further shortened.

Claims (10)

In the production method of the organic fertilizer which uses livestock waste, activated sludge, or livestock waste and activated sludge as a fermentation raw material, (i) adjusting the water content of the livestock waste, activated sludge, or fermented raw material consisting of livestock waste and activated sludge to 55 to 65% by weight, pH to 7.0 to 8.5, and C / N ratio to 20 or less; And (ii) adding fermented wheat bran to the adjusted product obtained by step (i) at a ratio of 25 to 50 parts by weight (converted to dry matter) relative to 100 parts by weight of fermented raw material (converted to dry matter). A method for producing an organic fertilizer, characterized in that. The process of claim 1, further comprising at least one mineral selected from vermiculite, perlite, zeolite, diatomaceous earth with bran in process (ii); Slaked lime; Organic microorganisms; And producing at least one of organic fertilizers. The fermentation promoter according to claim 1, wherein in step (ii), 100 parts by weight of bran, 1 to 3 parts by weight of hydrated lime, 3 to 10 parts by weight of humic acid, and 5 to 20 parts by weight of microbial material are added instead of bran, Here, the microbial material is 50 to 80% by weight of bran, and at least one adsorbent mineral material selected from vermiculite, perlite, zeolite, diatomaceous earth; One or more coals selected from charcoal, hultan, chaff, activated charcoal and bone char; Or as a fermentation raw material, a mixture of at least one adsorbent mineral material selected from vermiculite, perlite, zeolite, diatomaceous earth and at least 50 to 20% by weight of one or more carbons selected from charcoal, hultan, chaff, activated carbon and bone char , Primary fermentation in the presence of one or more of Aspergillus flavus, Aspergillus oryzae and Aspergillus sojae A method for producing an organic fertilizer, which is obtained by secondary fermentation in the presence of one or more of Streptomyces genus Actinomycetes, Pseudomonas genus bacteria and Bacillus genus bacteria. The fermentation promoter according to claim 1, wherein in step (ii), 100 parts by weight of bran, 1 to 3 parts by weight of hydrated lime, 3 to 10 parts by weight of humic acid, and 5 to 20 parts by weight of microbial material are added instead of bran, Here, the microbial material is added to at least one of Streptomyces actinomycetes, Stomomonas bacteria and Bacillus bacteria to the wheat bran to adjust the pH of the wheat bran to 6.0 to 12.0 to start the fermentation and the pH of the wheat bran during fermentation of 6.0 to 9.5 It is obtained by fermentation by keeping in the range, a method for producing an organic fertilizer. The fermentation promoter according to claim 1, wherein in the step (ii), 100 parts by weight of wheat bran, 1 to 3 parts by weight of hydrated lime, 3 to 10 parts by weight of humic acid, and 5 to 20 parts by weight of microbial material are added. Here, the microbial material may include at least one adsorbent mineral material selected from vermiculite, perlite, zeolite, and diatomaceous earth, which is equal to or less than bran and bran; One or more coals selected from charcoal, hultan, chaff, activated charcoal and bone char; Or Streptomyces actinomycetes, Pseudomonas bacteria, and a mixture of at least one adsorbent mineral material selected from vermiculite, perlite, zeolite, diatomaceous earth, and at least one charcoal selected from charcoal, hultan, chaff, activated charcoal and bone char. Method of producing an organic fertilizer, which is obtained by adding at least one of the bacteria of the genus Bacillus and adjusting the pH of the mixture to 6.0 to 12.0 to start the fermentation and maintaining the pH of the mixture in the range of 6.0 to 9.5 during fermentation. The process according to claim 1, wherein in step (ii), with the bran is added a fermentation promoting material consisting of 100 parts by weight of bran, 1 to 3 parts by weight of lime, 3 to 10 parts by weight of humic acid, and 5 to 20 parts by weight of microbial material, Here, the microbial material is 50 to 80% by weight of bran, and at least one adsorbent mineral material selected from vermiculite, perlite, zeolite, diatomaceous earth; One or more coals selected from charcoal, hultan, chaff, activated charcoal and bone char; Or as a fermentation raw material, a mixture of at least one adsorbent mineral material selected from vermiculite, perlite, zeolite, diatomaceous earth and at least 50 to 20% by weight of one or more carbons selected from charcoal, hultan, chaff, activated charcoal and bone char , Primary fermentation in the presence of one or more of Aspergillus flavus, Aspergillus aurise and Aspergillus soya, It is obtained by secondary fermentation in the presence of one or more of Streptomyces actinomycetes, Pseudomonas bacteria and Bacillus bacteria, the organic fertilizer manufacturing method. The process according to claim 1, wherein in step (ii), with the bran is added a fermentation promoting material consisting of 100 parts by weight of bran, 1 to 3 parts by weight of lime, 3 to 10 parts by weight of humic acid, and 5 to 20 parts by weight of microbial material, Here, the microbial material is added to at least one of Streptomyces actinomycetes, Pseudomonas bacteria and Bacillus bacteria to the wheat bran to start the fermentation by adjusting the pH of the bran to 6.0 to 12.0 and the pH of the wheat bran during the fermentation range of 6.0 to 9.5 It is obtained by fermentation to maintain, organic fertilizer production method. The process according to claim 1, wherein in step (ii), with the bran is added a fermentation promoting material consisting of 100 parts by weight of bran, 1 to 3 parts by weight of lime, 3 to 10 parts by weight of humic acid, and 5 to 20 parts by weight of microbial material, Here, the microbial material may include at least one adsorbent mineral material selected from vermiculite, perlite, zeolite, and diatomaceous earth, which is equal to or less than bran and bran; One or more coals selected from charcoal, hultan, chaff, activated charcoal and bone char; Or Streptomyces actinomycetes, Pseudomonas bacteria, and a mixture of at least one adsorbent mineral material selected from vermiculite, perlite, zeolite, diatomaceous earth, and at least one charcoal selected from charcoal, hultan, chaff, activated charcoal and bone char. Method of producing an organic fertilizer, which is obtained by adding at least one of the bacteria of the genus Bacillus and adjusting the pH of the mixture to 6.0 to 12.0 to start the fermentation and maintaining the pH of the mixture in the range of 6.0 to 9.5 during fermentation. The process according to claim 1, wherein the adjustment of the water content, pH and C / N ratio of the fermented raw material in step (i) is selected from mature fermented compost and vermiculite, perlite, zeolite, diatomaceous earth with a C / N ratio of 20 or less. Process for the production using one or more of the minerals. Organic fertilizer obtained using the manufacturing method according to any one of claims 1 to 9.