JP6232545B1 - Organic waste decomposition accelerator and microbial material containing the same - Google Patents

Abstract

An organic waste such as garbage is decomposed and extinguished in a short period of time while reducing the mass or volume as much as possible. An organic waste decomposition accelerator comprising a mineral humus complex obtained by humifying organic matter in the presence of a plurality of minerals containing iron extracted from basaltic andesite. [Selection] Figure 1

Description

  The present invention relates to a decomposition accelerator for organic waste caused by microorganisms, and more particularly, to a decomposition accelerator for increasing the decomposition rate of organic waste by adding it to a microbial material containing microbial bacteria. The present invention also relates to a microbial material for decomposing organic waste containing the decomposition accelerator and a method for decomposing organic waste using the same.

  So far, the use of various bacteria for garbage disposal has been explored. Bacteria acquire energy necessary for survival by taking in substances from the outside world and digesting them. Bacteria used for garbage disposal capture proteins, carbohydrates, lipids, and the like, which are constituents of garbage, and acquire energy necessary for survival, thereby decomposing and extinguishing garbage.

  However, a major problem regarding the practical application of garbage treatment is that it takes time to decompose garbage by bacteria, and it is also a problem that odorous substances such as ammonia are generated under long-time treatment conditions.

  In order to break down organic garbage in a short time, a method of culturing complex bacteria using aerobic bacteria, facultative anaerobic bacteria Paenibacillus lysosphaera and Bacillus Novalis, Bacillus oreronius and Lactobacillus has been reported ( Patent Document 1). The present inventors have found that it is necessary to optimally maintain moisture, temperature, and oxygen concentration conditions in order to maximize the garbage resolution of these complex bacteria. In order to achieve dramatic innovation, it is necessary to search for further activators.

On the other hand, ferrihydrite humus complex is used to remove soil pesticides and heavy metals and other pollutants, and to form soil aggregate structure with high water retention and air permeability to improve the microbial activity environment Technology has been reported (see Patent Document 2). Ferrihydrite is an amorphous iron hydrated oxide represented by the general formula 5Fe ₂ O ₃ · 9H ₂ O. Generally, it is known as a low-crystallinity iron mineral formed at an early stage in the earth's surface layer.

  The ferrihydrite humus complex described above is a composite of such ferrihydrite with an organic substance, but its high ion exchange ability and catalytic ability are inactivated heavy metals, decomposed and removed malodorous substances, pathogenic Excellent sterilizing effect on sexual microorganisms and viruses. In addition, the high gas adsorption capacity has the effect of adsorbing hydrogen sulfide, methane, ammonia, and chlorine gas, but the decomposition of organic matter is mainly due to anaerobic primary fermentation followed by decomposition and synthesis of organic matter by anaerobic bacteria. It is known that “humus” which is a brown or black-brown amorphous polymer substance is produced by polycondensation while repeating the above. In addition, it takes 2 to 6 months to produce fully humic humus, and even when composting livestock manure using this, it takes several days to 2 weeks for production. (See, for example, Patent Document 3, paragraph “0020”).

JP 2014-117192 A Table 02/077943 JP 2013-136507 A

  An object of the present invention is to decompose and extinguish organic waste such as raw garbage in a short time and with as little mass or volume as possible.

  The organic waste decomposition accelerator of the present invention is characterized in that it contains a mineral humus complex, which is an organic substance humated in the presence of a plurality of minerals including iron extracted from basaltic andesite.

  Moreover, the microbial material for decomposing organic waste of the present invention comprises a single or complex bacterium containing aerobic bacteria and / or facultative anaerobic bacteria, and a plurality of minerals containing iron extracted from basaltic andesite. It includes a mineral humus complex which is a humified organic substance.

  According to the present invention, organic waste, in particular, raw garbage can be decomposed and extinguished in a short time. In addition, there is an advantage that there is little odor generated in the decomposition process, and the weight loss rate is improved, and most garbage is lost.

It is a graph which shows the result of the decomposition process test of a shiitake mushroom and a shiitake fungus bed in Example 2. It is a graph which shows the result of the decomposition process test of a food residue in Example 3.

(Decomposition accelerator for organic waste)
One embodiment of the present invention is an organic waste degradation accelerator by microorganisms, comprising a mineral humus complex. The “mineral humus complex” of the present embodiment refers to a composition comprising a complex obtained by humifying an organic substance in the presence of a plurality of minerals including iron extracted from basaltic andesite. In addition, in this specification, “humus” refers to a brown or black-brown amorphous polymer substance produced by polycondensation while organic matter such as food waste and animal and plant remains are repeatedly decomposed and synthesized by the action of soil microorganisms. It is synonymous with “compost”.

The term “mineral” is a general term for elements other than the four elements of carbon, nitrogen, hydrogen and oxygen among the elements constituting the living body in the fields of medicine and biochemistry. For example, potassium, calcium, magnesium, iron, Examples of the metal element include manganese, copper, and zinc. Minerals used in the present embodiment are composed of many metal elements extracted from inorganic basaltic andesite with inorganic acid and containing at least iron. Among the minerals, ferrihydrite, which is an amorphous iron hydrated oxide represented by the general formula 5Fe ₂ O ₃ · 9H ₂ O, is generally found in the Earth's surface. It is known as a low-crystallinity iron mineral formed in stages.
Ferrihydrite has the property of coordinating with the OH end and O end of a carboxyl group or carbonyl group of an organic compound, and forms an aggregate. The specific surface area is as large as about 200 (m ² / g), and the field used for the reaction with the OH end and O end of organic compounds is wide, so the catalytic ability is high and the ability to form aggregates is high. ing.

The mineral humus complex of this embodiment is a natural ionized mineral concentrate obtained by adding an aqueous solution of sulfuric acid having a concentration of 10 to 20% by weight to sedimentary rocks such as basalt and andesite, and an organic substance. It is manufactured by the following manufacturing process using the mixture as a raw material.
The mineral liquid contains inorganic ions such as sodium, calcium, magnesium, etc., and especially contains about 1.9% by mass of iron (according to ICP emission analysis). Iron contained in the mineral liquid exists in different forms depending on pH. Below pH 3, iron is Fe ³⁺ , Fe ³⁺ and Fe (OH) ²⁺ at pH 3 to pH 4, Fe ³⁺ and Fe (OH) ²⁺ and Fe (OH) ₂ ⁺ at pH 4 to pH 5, and pH higher than pH 5 is present as Fe ^{(OH) 2+} and Fe _(OH) ^{2 +} and Fe _{(OH) 3.} In order to form ferrihydrite, trivalent iron Fe (OH) _{3 as a} raw material is preferably present. However, even if an acidic mineral concentrate is used, the iron in an ionic state is stabilized by mixing with organic waste, and the pH of the organic matter becomes 5 or more in the subsequent primary fermentation and secondary fermentation stages. There is no need to adjust the pH. Since the formation of Fe (OH) ₃ is inhibited when a large amount of magnesium and calcium is contained, the total content of magnesium and calcium contained in the mineral liquid is 30% by mass or less of the iron content. Is preferred. As one of such mineral liquids, “Amor 21” (trade name) is sold by Environmental Catalysis Science Co., Ltd.

  Organic wastes such as livestock excrement, raw garbage, food waste, pruned branches and waste chips, septic tank sludge and the like can be used as organic materials for humus.

The manufacturing method of a mineral humus composite is demonstrated.
First, stirring and mixing are carried out while dripping the mineral liquid containing iron mentioned above into the organic waste crushed with a known shredder. At this time, it is preferable to add a moisture adjusting material such as sawdust and / or a C / N adjusting material such as rice bran to obtain an appropriate moisture and C / N ratio. In this primary fermentation stage, organic matter is decomposed by the action of aerobic bacteria and heat is generated. When adjusting pH to promote the formation of ferrihydrite, slaked lime (calcium hydroxide: Ca (OH) ₂ ) may be added to adjust the pH of the organic substance to 5 or more. When Amol 21 is used as the mineral concentrate, the total amount of about 300 ml may be added to about 1 m ³ of organic waste, but the amount added is appropriately adjusted depending on the type and content of the organic matter.

Next, stirring of the organic matter is stopped, and secondary fermentation / ripening is performed. In this process, organic matter is deposited and fermented in a compost. When the temperature of the organic substance reaches 65 ° C. to 70 ° C., turning over by stirring using a bulldozer, a shovel car or the like is performed.
The organic matter becomes fully matured compost in about 2 to 6 months from the start of secondary fermentation / ripening process. In order to shorten the period of this secondary fermentation, it is preferable to recycle the fully humus and use it as a base material for treating organic matter. Thereby, the manufacturing period of a mineral humus composite can also be shortened to about two months.

Thus, the mineral (iron) humus complex used in the present embodiment is completed. The amount of ferrihydrite in this mineral humus complex is preferably 5 ppm or more. Further, the CEC (cation exchange capacity) of this ferrihydrite humus complex is about 50 (meq) (measured by the ammonium acetate method of the fertilizer analysis method), more preferably about 100 meq or more.
In addition, in this embodiment, although the mineral humus composite body manufactured by the said method is used, it is not limited to this, You may use what was manufactured by the other method. The mechanism for promoting the decomposition of organic waste by this mineral humus complex will be described in detail later.

(Microorganisms for organic waste decomposition)
Microorganisms used for decomposing organic waste are not particularly limited, but bacteria having a high growth rate are useful. Particularly useful bacteria are those collected from nature and consist of aerobic bacteria and facultative anaerobic bacteria. Bacteria grow in an environment where they can be easily collected, and there is no hindrance to stable supply. A single bacterial species may be used, but by using a complex bacterium composed of a plurality of bacterial species, a high treatment effect can be stably obtained regardless of the content of garbage. In the identification test of complex bacteria, several types of isolates are observed, but it is preferable that aerobic bacteria predominate and the form is gonococcus.

In a preferred embodiment of the present invention, a Kub fungus (trade name) sold by Re-Cub Co., Ltd. can be used. Physiological properties test and DNA base sequence of 16S rRNA region by PCR method were analyzed for three main isolates contained in Kub bacteria. As a result, one isolated bacterium is considered to be Paenibacillus lysosphaera, but closely related species are Paenibacillus sinelis and Paenibacillus fabisporus. Other isolates may be new species that are closely related to Bacillus Novalis but are not in the database. Yet another isolate may be Bacillus oreronius. Furthermore, lactobacillus has been identified as another isolated bacterium, and a short-time degrading bacterium is constituted by a complex bacterium composed of a plurality of these bacteria. As a form of Kub bacteria, it can be handled in the state disperse | distributed to the rice bran so that the total number of bacteria as a complex microbe may be set to 1 * 10 < ⁶ > -1 * 10 < ⁸ > / g.

(Microbial materials)
In another embodiment of the present invention, there is provided a microbial material for decomposing organic waste, comprising the mineral humus complex and a single or complex bacterium comprising aerobic bacteria and / or facultative anaerobic bacteria. The microbial material of the present embodiment can also form a fungus bed by directly adding the microorganism to the mineral humus complex, but other fungus bed materials are mainly used for improving water retention and moisture evaporation. May be included. Examples thereof include wood chips, rice husks, sawdust, bran, activated carbon, ceramic beads, polyvinyl alcohol, calcium silicate, zeolite, beet moss, silica gel and the like obtained by finely pulverizing or pulverizing wood. Therefore, the content of the mineral humus complex constituting the microbial material of the present embodiment is at least 50%, preferably 70% or more, and more preferably 80% or more. Nearly 100% of the total may be the mineral humus complex. The number of bacteria contained in the microbial material is not particularly limited, but usually contains the above single or complex bacteria so as to be about 1 × 10 ⁴ to 1 × 10 ⁷ / g with respect to the total amount of the microbial material. By doing so, the improvement of processing efficiency and the reduction effect of malodor can be obtained.

  “Organic waste” in the present embodiment includes raw garbage from ordinary households, food residue from restaurant kitchens, processing residue from food processing factories, food waste from supermarkets, and the like.

  Degradation of organic waste by bacteria, for example, is to acquire energy necessary for survival by incorporating proteins, carbohydrates, lipids, etc., which are components of garbage, into bacterial cells and metabolizing them. Generates carbon dioxide, water, ammonia, etc., for example, proteins are decomposed into amino acids and further into organic substances containing nitrogen.

  In a preferred embodiment of the present invention, promoting the decomposition of organic waste means improving the weight loss rate of the organic waste to be treated. Here, the “weight loss ratio” refers to the ratio of the mass of organic waste that has been decomposed and disappeared after a lapse of a predetermined time with respect to the mass of the organic waste initially charged. For example, when organic waste and microbial materials are mixed and the amount of residual waste after a lapse of a predetermined time is 1/2, the weight loss rate is 50%, and the weight loss rate when 1/4 remains is 75%.

  In a further preferred embodiment, the microbial material promotes the rate of decomposition of organic waste. The higher the weight loss rate of organic waste, the better. However, long-time decomposition treatment causes problems such as energy costs and generation of odors. Therefore, it is preferable to eliminate the organic waste as quickly as possible. For example, the microbial material of the present invention has a weight loss rate of the organic waste of at least 80% when the microbial material and organic waste of approximately equal volume are mixed and decomposed for 12 hours, Preferably it is 85%, more preferably 90%.

  In the present invention, it is considered that the functions of genes and enzymes in bacteria are activated by the degradation accelerator in the process of decomposing organic waste. The reason for this is not necessarily clear, but the mineral humus complex as a decomposition accelerator is amorphous, has a large surface area, and is rich in water retention and breathability. Presumably for optimization. It also excels in adsorptive decomposition of hydrogen sulfide, methane, ammonia, chlorine, and carbon-based gases, and has a deodorizing effect. Regarding odor, in addition to the action of the mineral humus complex, generation of odor is suppressed because ammonia is denitrified from nitrous acid to nitric acid by the action of microbial enzymes under aerobic conditions.

(Method for decomposing organic waste)
The organic waste decomposition treatment method of the present invention is performed by treating the above-described microbial material with raw garbage in a stirring tank at a temperature of 50 ° C. to 90 ° C. under aerobic conditions in which sufficient oxygen is present. Quickly decomposes garbage without causing bad odor. In order to achieve short-term decomposition and extinction, it is also important to have an appropriate moisture adjustment system and a structure that does not create a blind spot in the stirring tank.

  A garbage disposal apparatus for practicing the organic waste decomposition method of the present invention has a garbage agitation tank that accommodates garbage and the microbial material, and keeps the agitation tank in an aerobic state. Stirring means for stirring raw garbage and microbial material, and temperature management means for controlling the temperature in the stirring tank to 50 ° C. to 90 ° C. are provided. The stirring means may be a stirring blade structure that does not create a blind spot in the stirring tank, although it may be agitated by rotating the stirring tank itself or by driving a stirring bowl provided in the stirring tank. Is preferred. The stirring means may be driven continuously, intermittently at regular intervals, or when the oxygen concentration is below a certain level.

  The temperature in the garbage treatment tank may be any temperature at which the bacteria used in the present invention are active, and is usually in the range of 50 ° C to 90 ° C, particularly in the range of 50 ° C to 75 ° C, and more preferably from 55 ° C to 55 ° C. If it is 65 degreeC, the activity of bacteria is high and the processing efficiency of refuse becomes high, and it is preferable. When the temperature is lower than 50 ° C, the bacterial cells are not sufficiently activated, and the parasites and harmful microorganisms in the treatment tank, which is considered to be one of the causes of bad odor, cannot be sufficiently inactivated. And it is not preferable in the point of a bad smell reduction effect. On the other hand, when the temperature is higher than 90 ° C., a burning odor is generated and the activity of the bacteria is also lowered, which is not preferable.

  The heating in the stirring tank and the temperature adjustment are not particularly limited as long as it is a commonly used method. For example, a method of using a stirring device in which a heater unit is mounted in the stirring tank. However, in the case of the microbial material of the present invention, as the decomposition proceeds, the temperature in the stirring tank rises to 60 ° C. or more due to heat generation due to bacterial metabolism. For this reason, the heater is mostly used only at the time of initial charging of garbage.

  The humidity in the garbage treatment tank can be adjusted as appropriate or not adjusted according to the type of fungus to be used, but can be 80% or less from the viewpoint of fungal cell activity and treatment efficiency. It is preferably 50% to 60%, in particular. Such a humidity adjustment method is not particularly limited as long as it is a commonly used method, for example, a method of switching ON / OFF of the heating device in conjunction with a hygrometer provided in the treatment tank, A method such as providing a watering device can be mentioned. Moreover, it can also administer after carrying out pretreatment, such as sun drying or drying, before reducing to the treatment tank, and reducing the moisture content of garbage.

The amount of the strain used in the present invention is not particularly limited as long as the target garbage can be processed sufficiently. For example, 1 × 10 ⁷ or more, and particularly preferably, the stirring tank capacity. 1 × 10 ⁷ pieces / L or more, preferably about 1 × 10 ⁷ to 1 × 10 ¹⁰ pieces / L, or 5 × 10 ⁷ pieces / kg or more with respect to the amount of garbage to be administered at one time, The amount is preferably about 5 × 10 ^{7 to} 5 × 10 ¹⁰ pieces / kg.

  These strains can be used by regularly administering a new inoculum, such as once every several months or years, and because a certain amount of strain is alive in the treated compost, It is possible to continue to use it by only a single administration at the beginning of operation.

  The stirring tank used in the garbage processing apparatus of the present invention is not particularly limited as long as it is normally used. For example, in the case where 50 kg of garbage is administered daily, the capacity of the stirring tank is 100 L. As described above, by using a stirring tank having a capacity of preferably about 200 to 1500 L, particularly about 200 to 500 L, stirring and the like are suitably performed, and the processing efficiency can be maintained.

[Example 1] Manufacture of mineral humus complex In this example, Amor 21 (AMOR21) manufactured by Environmental Catalysis Science Co., Ltd. was used as the mineral liquid.
(1) Materials a) mineral humus complexes using (human Yumikku 25): 50 parts by weight (1.5 m ^3),
B) Sawdust (cushion material at the time of long shipment): 25 parts by weight (0.75 m ³ ), and c) Non-standard damaged vegetables and fruits (crushed and squeezed water): 25 parts by weight ( 0.75m ³ )

(2) Material mixing method From the upper part of the rotary mixer, the above-mentioned base material of a) and sawdust from b) were added and mixed in a mixer equipped with a spraying device for dripping minerals. While being stirred, the crushed material of vegetables and fruits in the above (c) was added while spraying the mineral liquid for about 30 to 40 minutes. After all the materials were added so that the minerals were well mixed with the materials, mineral spraying was performed while stirring the mixer for about 10 minutes. The total amount of mineral liquid used was about 900 ml.
After leaving for 30 to 40 minutes, the mixture was discharged from the mixture outlet and conveyed to a deposition site by a dump truck.

(3) Work in the sedimentation field The material that had been mixed for 5 days was deposited in one mountain. When the temperature started to increase by fermentation of the sediment and reached 70 ° C., turning was performed once. Then, although temperature fell once, since it rose to 70 degreeC or more again after 2 or 3 days, the 2nd turn was performed at that time. This operation was repeated for about 2 months. From that time, the activity of aerobic bacteria such as Bacillus subtilis ends, the temperature of the sediment gradually decreases, and instead the work of anaerobic bacteria such as lactic acid bacteria begins.
After that, it was left as it was for about 2 months without turning over. At this point, it is considered that a reduction reaction of the metabolite decomposed by the iron substance (iron ion) catalyzed and a polycondensation reaction of the organic substance occurs. The mineral humus composite produced in this way is sold by Environmental Catalytic Science Co., Ltd. under the trade name “ Humic 25”.

(4) half of the produced mineral humus complex (Hugh Mick 25) application and using this way mineral humus complex which is generated in is sold under the trade (Hugh Mick 25). As an application, it is used as a soil conditioner, for example, a treatment agent for soil contaminated with heavy metals or harmful polymer organic substances. The other half is reused as a mineral humus composite material (base material) in the above-described production method.

When 50 g of the completed mineral humus complex was used as a sample and the CEC (cation exchange capacity) was measured by the ammonium acetate method of fertilizer analysis, the CEC was 78 (meq).
Since it is generally known that a CEC of 30 (meq) or more contains ferrihydrite, the mineral humus complex obtained by the production method of this example may contain ferrihydrite. Proven. The “mineral humus composite” produced in this manner is synonymous with the “iron humus composite” in the following Examples.

[Example 2] Decomposition test of shiitake mushroom and shiitake mushroom beds In this example, the shiitake mushroom and shiitake mushroom beds were decomposed using the Bio-Robo Cove 50R sold by Re-Cube Co., Ltd. as a processing machine. The iron humus composite prepared in Example 1 was previously treated with 50 kg of the initial fungus bed material prepared by adjusting and mixing the Kub bacteria sold at Re-Cub Co., Ltd. to about 3.3 × 10 ⁵ cells / g. I put it in the machine. To this, waste of 26 kg of shiitake and 29 kg of shiitake fungus bed was added in a total amount of 55 kg, and the total weight of the residue in the processing machine was measured after 12 hours and 24 hours. Moreover, the residual amount of waste and the weight loss rate were calculated based on the following calculation formula.

Residual amount (kg) = total weight of residue−weight of initial input fungus bed material (1)
Weight loss rate (%) = (Total amount of garbage input-Remaining amount) / Total amount of garbage input (2)

These values in this example are indicated by a residual amount A and a weight loss rate A.
As a comparative example, an initial fungus bed material was prepared using sawdust instead of the iron humus composite prepared in Example 1. The calculation result by the above formula in this case is represented by the residual amount B and the weight loss rate B. The results are shown in Table 1 and FIG.

  As shown in Table 1 and FIG. 1, when the decomposition accelerator of the present invention is used, a weight loss rate of 90% or more is already achieved in a treatment time of 12 hours, and the shiitake mushroom and shiitake mushroom beds are decomposed in a very short time. I found out that In contrast, in the comparative example in which the fungus bed was prepared using sawdust instead of the degradation accelerator of the present invention, the initial degradation rate was significantly lower than that of the example from FIG. 1, and the weight loss after 24 hours had elapsed. You can see that the rate is also inferior.

[Example 3] Decomposition treatment test of food residue In this example, Biorobo Couve 50R sold by Re-Cube Co., Ltd. was used as a processing machine, and about 50 kg of food residue (vegetables, fruits, fish) was decomposed. Processed. In the same manner as in Example 2, 50 kg of an initial input fungal bed material composed of an iron humus complex containing about 3.3 × 10 ⁵ Kub bacteria sold at Re-Cub Co., Ltd. was previously charged into the processing machine. To this, waste of 29 kg of vegetables and fruits and 28 kg of fish was added in a total amount of 57 kg, and the total weight of the residue in the processing machine was measured after 12 hours and 24 hours. Further, based on the calculation formulas (1) and (2) used in Example 2, the remaining amount of waste and the weight loss rate were calculated.

These values in this example are indicated by a residual amount A and a weight loss rate A.
As a comparative example, an initial fungus bed material was prepared using sawdust instead of the iron humus composite prepared in Example 1. The calculation result by the above formula in this case is represented by the residual amount B and the weight loss rate B. The results are shown in Table 2 and FIG.

  As shown in Table 2 and FIG. 2, when the decomposition accelerator of the present invention is used, a weight loss rate of 93% or more is already achieved in a treatment time of 12 hours, and food residues can be decomposed in a very short time. I understood. In contrast, in the comparative example in which the fungus bed was prepared using sawdust instead of the degradation accelerator of the present invention, the initial degradation rate was significantly lower than that of the example from FIG. 2, and the weight loss after 24 hours had elapsed. You can see that the rate is also inferior.

[Example 4] Decomposition test of garlic In this example, Biorobo Couve 15R-P1 sold by Re-Cube Co., Ltd. was used as a processing machine, and about 15 kg of garlic residue was added every day for 3 days. In the same manner as in Examples 2 and 3, 20 kg of an initial input fungus bed material composed of an iron humus complex containing about 3.3 × 10 ⁵ pieces / g of Kub bacteria sold at Re-Cub Co., Ltd. was previously charged into the processing machine. . A total amount of 45.6 kg of 15.3 kg on the first day, 15.3 kg on the second day and 15 kg on the third day is added to the garlic residue, and the apparatus is stopped on the fourth day, and the above formula (1 ) And (2), the residual amount of waste and the weight loss rate were calculated.

These values in this example are indicated by a residual amount A and a weight loss rate A.
As a comparative example, an initial fungus bed material was prepared using sawdust instead of the iron humus composite prepared in Example 1. The calculation result by the above formula in this case is represented by the residual amount B and the weight loss rate B. The results are shown in Table 3.

表３に示した通り、装置稼動中は良好な分解効果を示し、悪臭も発生しなかった。また、処理より得られた残存物は実施例では２．２６ｋｇであり、減質量率も９５％と比較例に比べ、１０％程度高い効果が得られた。得られた残存物の色は茶褐色であったが、パウダー状で臭いも無く、肥料等に好適に再利用できるものであった。

As shown in Table 3, during the operation of the apparatus, a good decomposition effect was exhibited and no bad odor was generated. In addition, the residue obtained from the treatment was 2.26 kg in the example, and the weight loss rate was 95%, which was about 10% higher than the comparative example. The color of the obtained residue was brown, but it was powdery and had no odor and could be suitably reused as a fertilizer.

Claims (1)

After mixing organic waste with a plurality of minerals containing Fe ³⁺ extracted from basaltic andesite and decomposing the organic waste with stirring at about 70 ° C. for 2 months, it is further deposited for at least 2 months To produce a mineral humus complex containing ferrihydrite, which is left to stand and humusified by the action of soil microorganisms ,
The said mineral humus complex is thrown into the garbage which is a decomposition target together with the microorganisms for decomposing garbage including aerobic bacteria and facultative anaerobic bacteria, and the temperature is 50 ° C. to 90 ° C. under aerobic conditions. A method for decomposing garbage including stirring and mixing.

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