JP2001170611A - Granular aggregate including boiled rice - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide feed and organic fertilizer raw materials (or fertilizers) from food wastes containing boiled rice. SOLUTION: The granular aggregate which contains the boiled rice and is formed by finely dividing the food wastes containing the boiled rice in the presence of calcium oxide and/or magnesium oxide and in which the calcium oxide and/or magnesium oxide exists in the state of sticking to the granular materials.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granular material aggregate containing cooked rice, a method for producing the same, a feed and an organic fertilizer raw material (or organic fertilizer), and a food waste treating agent containing cooked rice.

[0002]

2. Description of the Related Art Food waste (garbage) including cooked rice is discharged from restaurants, hotels, schools, food factories, and the like. These garbage generates dioxins when incinerated. The disposal is very difficult. It is also clear that incineration of food waste is very undesirable from the viewpoint of resource saving. Therefore, there is a strong demand for the development of a technology for using food waste as a raw material for feed and fertilizer without incineration.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a feed and an organic fertilizer raw material (or fertilizer) from food waste including cooked rice and a method for producing the same, and also provides a processing agent for the food waste. The subject.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have completed the present invention. That is, according to the present invention, it is a particulate aggregate formed by subdividing food waste including cooked rice in the presence of calcium oxide and / or magnesium oxide, and the calcium oxide and / or magnesium oxide is A granular material aggregate containing cooked rice characterized by being present in a form attached to the granular material is provided. Further, according to the present invention, a food aggregate including cooked rice is subdivided in the presence of (i) a water-absorbing polymer and (ii) pulp and / or a porous substance to form a particulate aggregate formed. In addition, there is provided a granular aggregate including cooked rice, wherein the water-absorbing polymer and the pulp and / or the porous substance are present in a form attached to the granular material. Furthermore, according to the present invention, there is provided a method for producing a particulate aggregate from food waste including cooked rice, wherein the food waste is subjected to a fine-fractionation treatment in the presence of calcium oxide and / or magnesium oxide. The present invention provides a method for producing a granular material aggregate containing cooked rice, characterized by the following. Still further, according to the present invention, there is provided a method for producing a particulate aggregate from food waste including cooked rice, comprising: (i) a water-absorbing polymer and (ii) pulp and / or a porous material. The present invention provides a method for producing a granular material aggregate containing cooked rice, which is subjected to a subdivision treatment in the presence of a conductive substance. Furthermore, according to the present invention, there is provided a method for producing a particulate aggregate from food waste containing cooked rice, wherein the food waste is at least one selected from calcium oxide, magnesium oxide and a water-absorbing polymer. Provided is a method for producing a granular material aggregate containing cooked rice, which comprises subjecting to a finely divided treatment once in the presence of one kind of additive to form a lump product and then drying and pulverizing the lump product. Is done. Furthermore, according to the present invention, there is provided a feed comprising a granular material aggregate containing the cooked rice. Still further, according to the present invention, there is provided an organic fertilizer raw material or an organic fertilizer comprising a granular material aggregate containing the cooked rice.
Furthermore, according to the present invention, (i) calcium oxide;
A food waste treatment agent comprising cooked rice comprising a solid phase mixture of at least one selected from magnesium oxide and a water-absorbent polymer, (ii) pulp and / or a porous substance, and (iii) an antibacterial agent is provided. Is done.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Food waste (hereinafter also referred to as garbage) used as a raw material in the present invention contains a substantial amount of cooked rice. Such garbage can be found in various restaurants,
Emitted from hotels, homes, schools, food factories, etc. The percentage of cooked rice in garbage varies depending on the type of source,
Usually it is at least 5%, especially at least 10%. In the case of the present invention, garbage having a cooked rice content of 50 to 100% can be advantageously used as a raw material.

[0006] In one preferred method for producing a granular aggregate containing cooked rice using garbage according to the present invention,
The garbage is subdivided in the presence of calcium oxide and / or magnesium oxide (hereinafter also referred to as oxide). The use ratio of calcium oxide and / or magnesium oxide is 2 to 50 parts by weight, preferably 5 to 20 parts by weight, per 100 parts by weight of garbage. Subdivision of cooked rice is very difficult, and it is not possible to subdivide cooked rice by itself. If you try to subdivide the cooked rice with a high-speed rotary blade, the cooked rice will become sticky. However, when rice is subdivided in the presence of a sufficient amount of oxide, in this case, the oxide adheres to the surface of the subdivided cooked rice and the like and the subdivided state is maintained, and the fluidity is reduced. An aggregate composed of the divided products (granules) is obtained. This is advantageous in that it has good mixing properties, is easy to mix with other feeds, and is easy to fill into bags. The amount of the oxide added is generally 5 parts by weight or more, preferably 8 parts by weight or more, more preferably 10 parts by weight or more based on 100 parts by weight of garbage including cooked rice. The upper limit is usually about 30 parts by weight. In the present invention, 5 to 30 parts by weight, preferably 8 to 1 part by weight, per 100 parts by weight of garbage.
It is preferable to set the amount within a range of 5 parts by weight.

[0007] When the garbage is subdivided, a water-absorbing material can be present. As the water-absorbing material, any material may be used as long as it does not exhibit any harmful effect on animals and has a property of absorbing water, and organic and inorganic materials can be used.

The water-absorbing material includes pulp, water-absorbing polymer, and porous substances such as charcoal, activated carbon, zeolite, silica, fly ash, and alumina. In addition, dry feed (starch, cereal powder, rice bran, fish meal, etc.) can also be used. Pulp includes wood pulp and bagasse pulp (pulp from sugar cane squeezed cake). These pulp may be used in any shape such as powder, strip, cotton, sheet and the like. These pulp are
Even in the form of a sheet, it is subdivided together with the garbage. Preferred pulp used in the present invention is particularly bagasse pulp because of its high water absorption. Charcoal and activated carbon are used in the form of powder or pellet. Even if it is in the form of pellets, it is finely divided into powder together with garbage. Zeolite, silica, alumina and the like are used in the form of powder or granules. The water-absorbing polymer includes konjac mannan, gluten, casein, gelatin, carboxymethylcellulose, sodium alginate, chitosan, carrageenan, synthetic water-absorbing polymer, and the like. These are used in the form of powder, granules, fibers and the like. As the synthetic water-absorbing polymer, various known polymers can be used. Such materials include polyacrylates, saponified vinyl acetate / acrylate copolymers, polyvinyl alcohol / maleic anhydride reactants, cross-linked isobutylene / maleic acid copolymers, saponified polyacrylonitrile, Examples include polyethylene oxides, saponified starch / acrylonitrile graft polymers, starch / acrylic acid graft polymers, cross-linked carboxymethyl cellulose, and the like. The addition ratio of the water-absorbing material may be appropriately determined according to the water content of the garbage, and is not particularly limited. Usually, 1 to 100 parts by weight, preferably 2 to 60 parts by weight, per 100 parts by weight of the garbage. ,
More preferably, the ratio is 5 to 40 parts by weight.

In practicing the method of the present invention, antimicrobial agents (including bactericides and bacteriostats) can preferably be present. In this case, as the antibacterial agent, various conventionally known ones used as antibacterial agents for foods and the like can be used. Such materials include chlorinated isocyanuric acid (trichloroisocyanuric acid, sodium dichloroisocyanurate, etc.), 2-bromo-2-nitropropane-1,3-diol, sodium hypochlorite, hypochlorous acid Calcium oxide, sodium chlorite, ethanol, allyl isothiocyanate, stabilized chlorine dioxide solution or an adsorbent such as zeolite or silica that has absorbed the same, hydrogen peroxide, hydrogen peroxide (or oxygen) generator (percarbon Sodium, sodium perborate, sodium persulfate, etc.), diethyl pyrocarbonate (ethanol generator), chloramine B
Or, T, glyoxal, glutaraldehyde and the like can be mentioned. Alkaline substances such as calcium oxide, magnesium oxide and fly ash also act as antibacterial agents.
These antibacterial agents kill or inhibit the growth of microorganisms present in the finely divided product and prevent spoilage of the resulting finely divided product. The addition amount may be an amount capable of inhibiting the growth of microorganisms contained in the finely divided product. The specific addition amount is appropriately selected according to the type of the antibacterial agent.

In practicing the method of the present invention, a deodorant may be present. Examples of the deodorant include various conventionally known ones, for example, ferrous salt, sodium chlorite, glyoxal, activated carbon, zeolite, magnesia and the like. These are used alone or in the form of a mixture. In the present invention, preferably, a bivalent iron salt can be used. Examples of the divalent iron salt include iron sulfate, iron chloride, and iron lactate. The amount of the divalent iron salt to be added may be a proportion that can suppress the generation of amine odor from the obtained finely divided product. The specific addition amount is 1 to 40 parts by weight, preferably 5 to 20 parts by weight, per 100 parts by weight of garbage.

When carrying out the process of the present invention, a flow improver can be added. This fluidity improver is intended to improve the fluidity of the obtained particulate aggregate, and has an average particle diameter of 500 μm or less, preferably 200 μm or less,
More preferred are fine particles of activated carbon, silica, alumina, sodium hydroxide, calcium hydroxide, aluminum hydroxide, artificial zeolite and the like having a particle size of 100 μm or less. The addition amount may be small, and is usually 0.1 to 5%, preferably 1 to 3%.

The subdivision device used in the present invention may be any device capable of subdividing garbage, and various known devices can be used. Such a device includes a pulverizer having a high-speed rotating blade, a pulverizer that makes finer by frictional shearing force, and the like.

[0013] The subdivision product obtained by the present invention has a longest axis of 30 mm or less, preferably 10 mm or less, more preferably 5 mm or less. The lower limit is
Although not particularly limited, it is usually about 1 mm.

In another preferred method for producing a particulate aggregate from food waste containing cooked rice according to the present invention, the food waste is treated with (i) a water-absorbing polymer and (ii) pulp and / or porosity. Subdivision treatment in the presence of an acidic substance.
The usage ratio of the water-absorbing polymer is 0.5 to 30 parts by weight, preferably 1 to 20 parts by weight per 100 parts by weight of food waste. The proportion of pulp and / or porous material used is 2 to 100 parts by weight, preferably 5 to 100 parts by weight per 100 parts by weight of food waste.
５０50 parts by weight, more preferably 10-40 parts by weight.

In still another preferred method for producing a particulate aggregate from food waste including cooked rice according to the present invention, the food waste is selected from calcium oxide, magnesium oxide and a water-absorbing polymer. At least one
Once subdivided in the presence of the seed additives to form a lump product, the lump product is dried and ground. If food waste including cooked rice is subdivided in the presence of additives such as oxides and water-absorbing polymers, if the amount of these additives is not sufficient, the cooked rice may become sticky. And a lumpy product is formed. This lump product has almost no water adhering to the surface and has good handleability. This product becomes a pulverized cured product by drying, and a pulverized powder is obtained by pulverizing the cured product. Drying of the lump product can be performed at room temperature or under heating, but can be performed by a natural drying method. Drying in this case may be such that the obtained dried product is in a pulverizable state. Its water content is usually at most 40%, preferably at most 35%, more preferably at most 30%.

A preferred food waste treating agent containing cooked rice according to the present invention is (i) at least one selected from calcium oxide, magnesium oxide and a water-absorbing polymer, and (ii) pulp and / or a porous substance. And an appropriate amount of an antibacterial agent, a deodorant, a dry feed, a fluidity improver, and the like, if necessary. In the mixture, the proportion of the pulp and / or the porous substance is 10 to 80%, preferably 20 to 60%, more preferably 30 to 50% in the mixture. The proportion of the antibacterial agent is appropriately selected according to the type of the antibacterial agent, but in general,
It is 2 to 20%, preferably 5 to 15%, in the whole mixture. The specific addition ratio of pulp is determined in relation to the amount of calcium oxide, magnesium oxide or water-absorbing polymer used, and if the amount is small, the amount is large.
On the other hand, when the amount of the oxide used is large, the amount may be small.

The granular aggregate obtained from the garbage containing cooked rice according to the present invention is easy to handle and does not agglomerate even if they come into contact with each other. This granular material aggregate has good fluidity, is excellent in mixability, and is easy to fill into a packaging bag.

The granular material aggregate of the present invention is suitable as feed for livestock such as chickens, cows and pigs. If necessary, other feeds can be added to the feed comprising the aggregate of granular materials. The granular material aggregate of the present invention can be advantageously applied also as an organic fertilizer raw material and an organic fertilizer. The granular material aggregate of the present invention can be mixed with livestock dung and fermented to obtain a high-quality organic fertilizer. Fertilizers obtained in this way include:
Chemical fertilizers can be added as needed. Examples of such chemical fertilizers include nitrogen fertilizers such as lime nitrogen, urea, ammonium sulfate, and ammonium nitrate, as well as potassium fertilizers and phosphorus fertilizers.

The granular material aggregate according to the present invention is decomposed in the soil, and is dispersed in the soil as it is.
It can be applied as a soil conditioner.

[0020]

Next, the present invention will be described in more detail with reference to examples.

EXAMPLE 1 20 g of rice and calcium oxide (Ca) were added to a household juicer.
O) 3 g was added and subdivided for 2 minutes. As a result, the rice was not formed into a sticky shape, but became a finely divided granular material aggregate. The granular material had calcium oxide adhered to the surface thereof, the stickiness of the rice was remarkably reduced, and the granular material had good fluidity. At least a part of the calcium oxide attached to the surface of the rice particles reacts with the water on the rice particles and is converted into a hydrate (calcium hydroxide, Ca (OH) ₂ ). By adding and mixing 1 g of fine-particle activated carbon or silica to the granular material aggregate, the fluidity of the granular material aggregate could be further improved.

Comparative Example 1 An experiment was conducted in the same manner as in Example 1 except that calcium oxide was not used. In this case, the rice was not subdivided, and became rice cake-like.

Example 2 In a household juicer, 20 g of rice and 5 cc of water were added, and 5 g of calcium oxide was added, and the mixture was subdivided for 2 minutes. Also in this case, the rice did not have a sticky shape, but became a finely divided, fluidized granular material aggregate.

Example 3 20 g of rice, 10 cc of water, 5 g of pulp powder and 2 g of calcium oxide were placed in a household juicer and subdivided for 2 minutes. As a result, a finely divided granular material aggregate was obtained. This product was obtained by adhering pulp powder and calcium oxide to the surface of the finely divided rice particles, and the stickiness of the particle surfaces was remarkably reduced and had good fluidity. In this case, the calcium oxide attached to the particle surface is
It was converted to calcium hydroxide in a form that absorbed water.

Example 4 A home juicer was prepared by adding 20 g of rice, 2 g of pulp powder, 5 g of calcium oxide and sodium chlorite (NaCl
O ₂ ) (0.5 g) was added, and the mixture was subdivided for 2 minutes. As a result, a particulate aggregate having good fluidity was obtained. Since this product contained sodium chlorite as an antibacterial agent, it had reduced spoilage and was excellent in long-term storage.

Example 5 An experiment was conducted in the same manner as in Example 5, except that 1 g of activated carbon was added. The granular material obtained in this case had activated carbon adhered to its surface, and its fluidity was further improved.

Example 6 An experiment was conducted in the same manner as in Example 5, except that 0.5 g of sodium chlorite was replaced by 0.5 g of sodium dichloroisocyanurate. The product obtained in this case was also excellent in long-term storage because it contained sodium dichloroisocyanurate as a bactericide.

Example 7 An experiment was conducted in the same manner as in Example 1 except that 3 g of magnesium oxide (MgO) was used instead of 3 g of calcium oxide. As a result, also in this case, a particulate aggregate having good fluidity was obtained.

Example 8 An experiment was conducted in the same manner as in Example 1 except that 3 g of calcium oxide was replaced by 2 g of a water-absorbing polymer (Sumikagel, manufactured by Sumitomo Chemical Co., Ltd.) and 2 g of zeolite. As a result, also in this case, a particulate aggregate having good fluidity was obtained.

Example 9 An experiment was conducted in the same manner as in Example 1 except that 2 g of calcium oxide and 2 g of Sumikagel were used instead of 3 g of calcium oxide. As a result, also in this case, a granular material having good fluidity was obtained.

Example 10 An experiment was conducted in the same manner as in Example 1 except that 2 g of zeolite was added. Also in this case, a granular aggregate having good fluidity was obtained.

Example 11 20 g of rice, 20 g of lettuce, and 5 g of calcium oxide were placed in a household juicer and subdivided for 2 minutes. Also in this case, a particulate aggregate having good fluidity was obtained.

Example 12 An experiment was conducted in the same manner as in Example 11, except that 2 g of pulp powder was added. Also in this case, a granular aggregate having good fluidity was obtained.

Example 13 A home juicer was charged with 20 g of rice, 5 g of minced chicken, and 5 g of calcium oxide, and was finely divided for 2 minutes. Also in this case, a particulate aggregate having good fluidity was obtained.

Example 14 An experiment was conducted in the same manner as in Example 13 except that 0.5 g of sodium chlorite was added. Also in this case, a particulate aggregate having good fluidity was obtained. In addition, since this product contained sodium chlorite, it had excellent long-term storage properties.

Example 15 20 g of rice, 10 g of minced chicken and 10 g of lettuce were put in a household juicer, and a mixture of 8 g of calcium oxide, 2 g of pulp powder and 0.5 g of sodium chlorite was added, and the mixture was subdivided for 2 minutes. Processed. As a result, a particulate aggregate having good fluidity was obtained. This aggregate of the particulates had almost no chicken odor and was excellent in long-term storage.

Example 16 Household juicer, 20 g of rice and 10 g of chicken tempura
Was added, 5 g of calcium oxide was added, and the mixture was subdivided for 3 minutes. Also in this case, a granular material having good fluidity was obtained.

Example 17 Rice (approximately 50 g) containing a sprinkled soboro lunch was placed in a household juicer, and 10 g of calcium oxide was further added, followed by subdivision for 2 minutes. As a result, a granular material having good fluidity was obtained.

Example 18 20 g of rice and 20 g of lettuce were put in a household juicer.
Furthermore, 2 g of pulp powder, 2 g of zeolite and 1 g of activated carbon
And a mixture of 5 g of calcium oxide and 1 g of sodium chlorite was added, and the mixture was subdivided for 2 minutes. As a result, a particulate aggregate having good fluidity was obtained. This is suitable as an organic fertilizer or a soil conditioner. In addition, this is mixed with raw cow dung and fermented,
It can be fermented fertilizer (fertilizer).

Example 19 A subdivision treatment was performed in the same manner as in Example 1 except that 1 g of calcium oxide was used instead of 3 g of calcium oxide. In this case, a lump product was obtained. This was heated in a microwave oven for 3 minutes to remove water, then put again in a household juicer, and pulverized (subdivided). As a result, a powder having good fluidity (granule aggregate) was obtained.

Example 20 A subdivision treatment was performed in the same manner as in Example 1, except that 0.2 g of Sumikagel and 2 g of pulp were used instead of 3 g of calcium oxide. In this case, a lump product was obtained. This was left to dry in a room for one day and then ground again in a household juicer. As a result, a powder having good fluidity (granule aggregate) was obtained.

[0042]

The granular aggregate containing cooked rice according to the present invention can be used not only as a feed for livestock, but also as a raw material of an organic fertilizer, an organic fertilizer itself, and a soil improver. It is. The method for producing a particulate aggregate according to the present invention is based on food waste (garbage) containing cooked rice, which is difficult to dispose of, and a method for producing a product useful as feed or the like from the garbage. Therefore, its industrial significance is enormous.

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Claims (25)

[Claims] 1. A granular aggregate formed by subdividing food waste including cooked rice in the presence of calcium oxide and / or magnesium oxide, wherein the aggregate is a particulate matter.
Alternatively, a granular material aggregate containing cooked rice, wherein magnesium oxide is present in a form attached to the granular material. 2. The particulate aggregate according to claim 1, wherein the ratio of the cooked rice is at least 10% in food waste. 3. The method according to claim 1, wherein the proportion of said calcium oxide and / or magnesium oxide is 2 to 5 per 100 parts by weight of said food waste.
3. The particulate aggregate according to claim 1, wherein the amount is 0 parts by weight. 4. The particulate aggregate according to claim 1, further comprising a water-absorbing material. 5. The particulate aggregate according to claim 1, wherein the water-absorbing material is pulp, a water-absorbing polymer, or a porous substance. 6. A particulate aggregate formed by subdividing food waste containing cooked rice in the presence of (i) a water-absorbing polymer and (ii) pulp and / or a porous substance, A granule aggregate containing cooked rice, wherein the water-absorbing polymer and the pulp and / or the porous substance are present in a form attached to the granule. 7. The particulate aggregate according to claim 6, wherein the ratio of the water-absorbing polymer is 0.5 to 30 parts by weight per 100 parts by weight of the food waste. 8. The particulate aggregate according to claim 6, further comprising a water-absorbing material. 9. The particulate aggregate according to claim 8, wherein said water-absorbing material is pulp and / or a porous substance. 10. The particulate aggregate according to claim 1, further comprising an antibacterial agent. 11. The particulate aggregate according to claim 1, further comprising a deodorant. 12. A method for producing a granular material aggregate from food waste containing cooked rice, wherein the food waste is finely divided in the presence of calcium oxide and / or magnesium oxide. A method for producing a granular material aggregate containing cooked rice. 13. The method of claim 12, wherein a water absorbing material is present. 14. The method according to claim 13, wherein said water absorbing material is pulp, a water absorbing polymer or a porous substance. 15. A method for producing a particulate aggregate from food waste containing cooked rice, wherein the food waste comprises (i) a water-absorbing polymer and (ii) pulp and / or a porous substance. A method for producing a granular material aggregate containing cooked rice, characterized by performing a subdivision treatment below. 16. The composition according to claim 1, wherein the proportion of the water-absorbing polymer is 0.5 to 30 parts by weight per 100 parts by weight of the food waste.
Method 3. 17. A method for producing a particulate aggregate from food waste containing cooked rice, wherein the food waste is added with at least one kind selected from calcium oxide, magnesium oxide and a water-absorbing polymer. A method for producing a granular material aggregate containing cooked rice, comprising, after forming a lump product by finely dividing in the presence of an agent, once forming a lump product, and drying and pulverizing the lump product. 18. The method of claim 17, wherein a water absorbing material is present. 19. The method according to claim 17, wherein the water-absorbing material is pulp or a porous substance. 20. The method according to claim 12, wherein an antibacterial agent is present.
Either way. 21. The method according to claim 12, wherein a deodorant is present.
Either way. 22. A feed comprising a granular aggregate comprising the cooked rice of any one of claims 1 to 11. 23. The feed according to claim 22, wherein a powdered feed is mixed. 24. An organic fertilizer raw material or organic fertilizer comprising a granular material aggregate containing the cooked rice of any one of claims 1 to 11. 25. A solid phase mixture of (i) at least one selected from calcium oxide, magnesium oxide and a water-absorbing polymer, (ii) pulp and / or a porous substance, and (iii) an antibacterial agent. Processing agent for food waste including cooked rice.