JPH07275836A - Garbage dryer and garbage treatment method - Google Patents

Abstract

PURPOSE:To provide a garbage dryer and a garbage treatment method which can reduce or prevent the odor and putrification of dried kitchen garbage or condensed water separated from the garbage by heating. CONSTITUTION:In a dryer composed of a garbage receiving part 1, a condensation part 4 for condensing water vapor separated from garbage by heating and a garbage heating means, an auxiliary having a component of a basic electrolyte is incorporated into the garbage, and the mixture is dried so that an organic acid is made nonvolatile by the reaction between the organic acid generated by the oxidation of the garbage and basic components, this reducing odor generated from the dried garbage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directed to food waste such as cooking wastes containing a large amount of water and food leftovers, and is suitable for household use, for example, which is small and can be used easily and sanitarily. The present invention relates to a processing device and a garbage disposal method.

[0002]

2. Description of the Related Art Garbage generated at home is collected by a collection vehicle by each municipality and collectively disposed of by landfilling or incineration. The amount of waste generated is increasing year by year, and the processing capacity of each municipality is reaching its limit. Although it is necessary to construct a new treatment plant to deal with the increase in waste, it is difficult to secure land for the construction of the new treatment plant due to opposition movements of residents. Therefore, it has become necessary to reduce the amount of waste generated in each household or individual. At home, garbage is a nuisance. In particular, the establishment of a processing technology for garbage that has a rotten and unpleasant odor is desired. Therefore, various household garbage disposal devices for household use have been developed based on the social trend of waste reduction and household needs. As the processing equipment, there are a disposer that crushes raw garbage and discharges it into sewage together with drainage, a compost that decomposes raw garbage into fertilizer, and a device that decomposes and eliminates garbage using microorganisms. In addition, a food waste drying device has been developed which dries the food waste to reduce the amount thereof and prevents spoilage.

[0003]

However, the disposer is basically prohibited from use because it contaminates rivers and the like. Because compost requires soil,
It cannot be used in apartments without gardens. In addition, the garbage decomposing machine using microorganisms can be processed without odor to some extent under the condition of aerobic fermentation, but it becomes a problem to generate an unbearable odor under the condition of anaerobic fermentation. The food waste dryer treats food waste anywhere and can handle odors during drying to some extent. However, there is a problem in that odor remains in the dust after drying or the condensed water that has been separated by heating.

The present invention solves the above-mentioned conventional problems. Drying of garbage can further reduce the odor of garbage after drying the garbage or condensed water heated and separated from the garbage as compared with the conventional case. An object is to provide a processing device and a processing method thereof.

[0005]

A first aspect of the present invention is a food waste drying apparatus comprising a storage unit for storing food waste, and a heating means for heating and drying the food waste stored in the storage unit. When the food waste is stored in the storage portion and heated and dried using, the processing aid for deodorization is put into the storage portion at the same time and / or at a different time from the storage of the food waste. It is a garbage disposal method.

A second aspect of the invention is a storage section for storing food waste,
A heating means for heating and drying the food waste stored in the storage portion, and a gas provided on the outside of the storage portion and separated from the food waste by the heating means and / or the gas is condensed. When using a food waste drying treatment apparatus having a passage portion through which the generated liquid passes and a storage portion that stores the liquid, when storing the food waste in the storage portion and performing heat drying, the raw food At the same time as the storage of garbage and /
Alternatively, it is a method of treating food waste, in which a processing aid for deodorization is added to the passage portion and / or the storage portion at different times.

A third invention is, after the above-mentioned addition of the processing aid,
If the food waste is basic, add an acidic substance as another treatment aid, and if the food waste is acidic or neutral, add a basic substance as another treatment aid. According to the first aspect of the present invention, there is provided a method for treating raw garbage according to the first or second aspect of the present invention.

A fourth invention is the above-mentioned processing aid, which is a processing aid containing a basic electrolyte as one component.
Alternatively, it is a method for treating food waste as a third invention.

A fifth aspect of the invention is the method of treating food waste as the first aspect, the second aspect, or the third aspect, wherein the treatment aid is a treatment aid containing a water-soluble peroxide as one component.

A sixth invention is a method of treating food waste as the fifth invention, wherein the water-soluble peroxide is a peroxo acid salt.

In a seventh aspect of the invention, the peroxo acid salt is a mixture of one or more components selected from peroxocarbonates, peroxoborates, and hydrogen peroxide adducts of other inorganic weak acid salts. Is a method of treating food waste as a sixth invention.

An eighth invention is a method of treating food waste as the fifth invention, wherein the water-soluble peroxide is hydrogen peroxide solution.

A ninth invention is the method for treating food waste as the fourth invention, wherein the basic electrolyte is an alkali metal hydroxide salt or an alkaline earth metal hydroxide salt.

A tenth invention is a method for treating food waste as a ninth invention, wherein the hydroxide salt is calcium hydroxide.

The eleventh invention is a method for treating food waste as the fourth invention, wherein the basic electrolyte is an inorganic weak acid salt of an alkali metal or an inorganic weak acid salt of an alkaline earth metal.

A twelfth invention is a method for treating food waste as the eleventh invention, wherein the inorganic weak acid salt is a carbonate.

A thirteenth invention is a method for treating food waste as a twelfth invention, wherein the carbonate is potassium carbonate.

A fourteenth invention is a method of treating food waste as a fourth invention, in which the basic electrolyte is an alkaline earth metal.

A fifteenth invention is a method for treating food waste as an invention according to any one of the ninth invention to the fourteenth invention, wherein a fragrance is added as another component of the treatment aid.

A sixteenth aspect of the present invention is a storage part for storing food waste, a heating means for heating and drying the food waste stored in the storage part, and a method for heating and drying the food waste. A charging means for charging a processing aid containing one component of a basic electrolyte into the storage part at a predetermined time, a storage part for storing the processing aid supplied to the charging means, and the charging part. And a control unit for controlling the operation of the means.

A seventeenth aspect of the present invention is a storage section for storing food waste, a heating means for heating and drying the food waste stored in the storage section, and a heating means provided outside the storage section. The gas separated from the garbage and / or a passage part through which a liquid generated by condensing the gas passes, and a storage part that stores the liquid, and all or part of the passage part, and / or Alternatively, it is a food waste drying apparatus in which a processing aid for deodorization can be arranged in the storage section.

The eighteenth invention is the apparatus for drying food waste as the seventeenth invention, wherein the processing aid is a processing aid containing a basic electrolyte as one component.

A nineteenth aspect of the present invention is the food waste drying treatment apparatus according to the seventeenth aspect, wherein the treatment aid is a treatment aid containing a water-soluble peroxide as one component.

In a twentieth aspect of the invention, a part of the passage portion is a drain port provided at a bottom portion thereof, and the processing aid is dissolved in the liquid.
It is an apparatus for drying food waste as an invention.

In the twenty-first aspect of the invention, the entire passage portion is the entire inner wall portion thereof, and the portion of the passage portion is the upper portion of the inner wall side surface or at least a portion of the inner wall side surface portion,
A first processing aid for dissolving the processing aid in the liquid;
It is an apparatus for drying food waste as an eighth invention or a nineteenth invention.

A twenty-second aspect of the invention is the apparatus for drying food waste as the twentieth aspect or the twenty-first aspect of the invention, wherein the treatment aid is pressure-molded so as to match the shape of the inner wall of the passage. .

A twenty-third aspect of the invention is a food waste drying apparatus as the twentieth aspect or the twenty-first aspect, wherein the treatment aid is contained in a water-permeable material such as paper or nonwoven fabric.

In a twenty-fourth aspect of the invention, the above-mentioned processing aid is a corrugated
The twentieth invention contained in a non-woven fabric molded into a tongue,
Alternatively, the food waste drying apparatus according to the twenty-first invention.

A twenty-fifth aspect of the present invention is the second invention, wherein the processing aid is contained in a resin-made processing aid storage member having an elution port.
It is a garbage drying processing apparatus as 0th invention or 21st invention.

[0030]

It is an object of the present invention to provide a drying treatment method and the like for reducing the odor from the dust or condensed water after the drying treatment, by using the above-mentioned treatment method and apparatus for drying the garbage.

In the process of heating and drying raw garbage, a processing aid having a basic electrolyte as one component is added to the raw garbage to reduce the odor of the dried garbage. It is known that the oxidation of food depends on the water content and the oxidation reaction also progresses as the drying progresses. In the process of drying food waste, the food waste is more likely to be oxidized with the progress of drying, and the reaction itself is more likely to proceed because it is in a heated state. When organic matter in dried food waste is oxidized, it becomes low molecular volatile organic acids such as acetic acid, propionic acid, and valeric acid. A large amount of malodorous organic acids are generated and remain in the waste in the latter stage of the treatment after drying. This is one of the causes of the odor generation of dry food waste. 1 basic electrolyte in the garbage drying process
By adding the processing aid as a component, the organic acid generated by the oxidation reacts with the added base component. As a result, the organic acid becomes non-volatile, and the odor generated from dried food waste is significantly reduced.

Further, for example, a storage section for food waste, a heating means for heating the food waste, a condensation section for water vapor, a storage section for a processing aid containing one component of a basic electrolyte, and the introduction of the processing aid. In the food waste drying apparatus having a means, the processing aid is added to the food waste during processing by the charging means under the optimum conditions. As described above, in the latter stage of drying, a large amount of organic acid is generated from raw garbage. However, when the processing aid is added in the latter stage of drying, the basic electrolyte and the organic acid do not react effectively because the water content is small. If added before the drying treatment, the waste containing a large amount of organic acid components may be neutralized at the initial stage of heating and drying, and the effect may be halved. Therefore, by automatically adding by the charging means, the addition can be performed under the optimum conditions in which the basic electrolyte can be dissolved. Furthermore, the trouble of adding the processing aid can be saved.

In the process of heating and drying raw garbage, the odor of condensed water is reduced by adding a processing aid having a basic electrolyte as one component to condensed water of steam generated when the raw garbage is heated. To do. As described above, a large amount of malodorous organic acids are generated in the process of drying food waste. These organic acids dissolve in condensed water when the steam separated by heating from food waste is condensed. Therefore, the condensed water produces a bad odor. Therefore, the dissolved organic acid and the basic component are reacted by adding a processing aid containing the basic electrolyte as one component to the condensed water. As a result, the organic acid becomes non-volatile, and the odor generated from condensed water can be significantly reduced.

Further, for example, it has a storage section for food waste, a heating means for heating the food waste, a condensation section for water vapor, and a water storage section for the condensed water, and either of the bottom drain port of the condensation section or the water storage section. In a food waste drying treatment apparatus in which a treatment aid having a basic electrolyte as one component is provided at a location, the treatment aid dissolves in the condensed water when the condensed water passes through the treatment aid. As a result, the odor of condensed water is reduced and the time and effort of adding the processing aid to the condensed water is saved.

Further, for example, in a structure in which a processing aid containing one component of a basic electrolyte is provided on the entire surface of the condensation section, the upper side surface or at least a part of the side surface, when the water vapor is condensed, the basic electrolyte is condensed water. Dissolve in. As a result, the odor of condensed water is reduced as described above. Furthermore, the odor of dust after drying is also significantly reduced. When the condensed water remains in the condensing part after the drying treatment, the organic acid dissolved in the condensed water is volatilized and redeposits on the dry dust. The steam separated by heating is condensed from the upper part of the condenser. Therefore, when the basic electrolyte is present in the upper part or the entire surface of the condensation part, the organic acid component in the condensed water is made non-volatile at the same time as the condensation. As a result, the organic acid in the condensed water existing in the condensation section becomes almost non-volatile, and it is prevented from reattaching to the dry dust.

In the process of heating and drying raw garbage, the odor of condensed water can also be reduced by adding a processing aid containing water-soluble peroxide as one component to the condensed water that is heated and separated from the raw garbage. In the process of drying food waste, a large amount of odor is generated in addition to organic acids. The odors of water-soluble aldehydes and the like are also dissolved in the condensed water together with the organic acid. for that reason,
Condensed water gives off a bad odor. Therefore, by adding a processing aid containing a water-soluble peroxide as one component to the condensed water, active oxygen is generated in the condensed water to oxidize easily oxidizable odorous components such as aldehydes, and a substance with low odor intensity is formed. React. As a result, it is possible to reduce the odor component in the condensed water and suppress the generated odor.

In the process of heating and drying the food waste, after adding a processing aid having a water-soluble peroxide as one component to the condensed water heated and separated from the food waste, the condensed water after the addition of the processing aid is added. If is basic, an acidic substance is added, and if acidic or neutral, a basic substance is added to neutralize the condensed water, thereby significantly reducing the odor of condensed water. As described above, by adding the water-soluble peroxide to the condensed water, the odor component in the condensed water can be reduced. However, if the condensed water in which the water-soluble peroxide is dissolved is acidic, the organic acid-based odorous component is volatilized from the condensed water.
If the condensed water is basic, basic odor components such as ammonia and amines may volatilize. Therefore, by reducing the neutral odor with a peroxide and then making the condensed water neutral, it is possible to suppress the volatilization of basic and acidic odors. As a result, the odor generated from the condensed water can be significantly suppressed.

By performing the above-mentioned treatment, it is possible to achieve the drying treatment for reducing the odor from the dust or condensed water treated by the food waste drying treatment apparatus.

[0039]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a vertical cross-sectional view of a main part of a food waste drying apparatus used for carrying out the present invention. In FIG.
Reference numeral 1 is a heat insulating container made of stainless steel and having an air heat insulating layer. Reference numeral 2 denotes a sample storage portion, which is made of polyphenyl sulfide resin and can be detached from the heat insulating container 1. Reference numeral 3 is a door that opens and closes when the sample is taken in and out of the storage unit 2, 4 is a condensing unit for condensing the generated water vapor, and 5 is a stirring unit of the sample arranged under the condensing unit 4, which is a drive unit 5b and a shaker. −
Do 5a. 6a is a heater provided in the heating section 6
It is located at the upper part of the storage part 2 and is attached to the door 3. 6b is a fan of the heating unit 6 attached to the door 3.
Reference numeral 7 is a drainage port for condensed water, and 8 is a temperature detection unit provided on the door 3 so as to be located above the storage unit. 9 is a heating unit 6 and a driving unit 5
It is an operation control unit of b. Reference numeral 10 is a water storage section for condensed water, and 11 is a deodorization section using an oxidation catalyst.

Next, the operation will be described. First open the door 3,
Put garbage in storage 2. At this time, a processing aid containing calcium hydroxide as one component was also added at the same time. Next, the heater 6a in the heating section was energized to heat the sample contained in the housing section 2, and the fan 6b was operated to heat the sample with hot air for drying treatment. The hot air temperature was detected by the temperature detection unit 8, and the input to the heater was adjusted by the control unit 9 so that the sample was heated at a constant temperature. In this way, the garbage processing device was operated to heat and dry the garbage.

It is known that the oxidation of food depends on the water content and that the oxidation reaction also progresses as the drying progresses.
That is, the dried food waste is easily oxidized, and the oxidation reaction easily progresses under the heating condition. The organic matter in the dry food waste is oxidized, and a reaction occurs which becomes a low-molecular volatile organic acid such as acetic acid, propionic acid, and valeric acid.

In the latter stage of the drying treatment, a large amount of these malodorous organic acids are generated, so that they remain in the dust. This is one of the causes of the odor generation of raw garbage after drying. Therefore, in the process of drying food waste, a treatment aid having a basic electrolyte as one component is added for treatment to react the organic acid generated by oxidation with the base component. As a result, the organic acid becomes non-volatile, and the odor generated from the dried garbage is greatly reduced.

In this example, calcium hydroxide was used as a basic electrolyte as a processing aid in an amount of 10 g per 700 g of garbage.
Added and dried. As a result of sensory evaluation of the odor after the drying treatment, it was found that the odor can be significantly reduced as compared with the same garbage treatment without the addition of the treatment aid.

When the dry food waste added with the processing aid is soaked in water (10 g of dry waste to 100 g of water), the PH is 4
It became the neighborhood. With the treatment aid, the pH was around 9. It can be seen that the entire waste becomes basic and the organic acid is reduced. Also, it was found that when potassium carbonate was used as a processing aid, the odor of dry waste was similarly reduced.

The dried waste can be composted by growing it underground and used as a fertilizer. By adding a processing aid to make dry waste basic, it also has the effect of improving soil. Further, when a plant essential element compound such as calcium, potassium or magnesium salt is used as the basic electrolyte, the utility value as a fertilizer can be improved.

In this example, 10 g of calcium hydroxide was added as a processing aid. However, the addition amount should be adjusted according to the amount of dust within the range in which the dust after treatment becomes basic, and the above effect is obtained. Is obtained.

Any treatment aid component may be used as long as it is water-soluble and basic. For example, a hydroxide salt of an alkali metal or an alkaline earth metal, an inorganic weak acid salt of an alkali metal or an alkaline earth metal, a carbonate of an alkali metal, etc., that is, a compound of an alkali metal or a compound of an alkaline earth metal, or, Alkaline earth metal may be used, and the same effect as this embodiment can be obtained.

Further, these basic electrolytes may be added as a mixture of two or more components.

When a processing aid containing a fragrance such as vanillin or cineole is added in addition to the basic electrolyte, dry odor can be masked and malodor can be sensuously prevented.

The handling property of the processing aid can be improved by mixing one or two or more of these processing aids and adding the one molded into a tablet.

Further, the processing aid is not limited to the one containing a basic electrolyte as a component, and for example, a processing aid containing one component of a water-soluble peroxide may be added. In case of, the same effect as above is obtained. (Embodiment 2) Next, another embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is a longitudinal sectional view of the essential parts of a food waste drying apparatus according to an embodiment of the present invention.

Since a device having substantially the same structure as that of the first embodiment is used, detailed description of that part is omitted. The main difference from the first embodiment is that as a means for introducing the processing aid, it has a cylinder part 12 as a storage part of the processing aid and a nozzle 13 in the door 3. The inside of the cylinder 12 has a high pressure, and the processing aid is blown out from the nozzle 13 by utilizing the pressure difference. Further, the cylinder unit 12 is composed of a cylinder 12a and a control unit 12b, and is configured to automatically send the processing aid to the nozzle 13.

In Example 2, raw garbage was treated in substantially the same manner as in Example 1. The difference is that a process of spraying the processing aid of the cylinder portion 12 onto the raw garbage from the nozzle 13 is provided in the raw garbage drying process. In addition, this time, the potassium carbonate aqueous solution was used as a processing aid.

As shown in Example 1, in the latter stage of drying, a large amount of organic acid is generated from garbage. However, when the processing aid was added in the latter stage of drying, the basic electrolyte and the organic acid did not react effectively due to the low water content. In addition, a large amount of dressing containing a large amount of acetic acid may be mixed in the waste. When such waste is added before the drying treatment, it may be neutralized with the organic acid component in the garbage at the initial stage of drying, and the effect may be halved. Furthermore, if a powdered processing aid is sprinkled on top of the garbage before the drying process, the processing aid will not dissolve due to the low water content on the garbage surface, and it will be blown off by the wind from the fan to the condensation part, etc. Oops. Therefore, as in the present example, by automatically adding to the garbage in the heating and drying process by the charging means, the processing aid of the basic electrolyte can be added in the middle heating and drying stage in which the processing aid dissolves and adheres to the garbage. . Furthermore, by adding it in the middle of heating and drying when the organic acid decreases to some extent, it was possible to bring out the odor reducing effect of the processing aid of the basic electrolyte regardless of the type of food waste. In the mid-drying period, the processing aid is more likely to dissolve due to water stains than kitchen waste, so that it is possible to prevent the processing aid from being blown off by the wind from the fan. In addition, the trouble of adding the processing aid could be saved.

In this example, an aqueous solution of potassium carbonate was used as the processing aid, but if one component of the processing aid is an aqueous solution of a compound showing basicity or its powder,
Anything is fine. For example, a hydroxide salt of an alkali metal or an alkaline earth metal, an inorganic weak acid salt of an alkali metal or an alkaline earth metal, a carbonate of an alkali metal, etc., that is, a compound of an alkali metal or a compound of an alkaline earth metal, or, Alkaline earth metal may be used, and the same effect as this embodiment can be obtained.

Further, these basic electrolytes may be added as a mixture of two or more components.

Further, as the means for introducing the processing aid, the processing aid is sprayed on the garbage by utilizing the pressure difference.
It is of course also possible that the processing aid is dropped from the storage part of the processing aid provided at the upper part of the garbage storage part by using gravity and is added into the waste. (Embodiment 3) Next, still another embodiment of the present invention will be described with reference to FIG.

Since a device having the same structure as that of the first embodiment is used, detailed description of that part is omitted.

In Example 3, raw garbage was treated in substantially the same manner as in Example 1. The main difference is that a processing aid having a basic electrolyte as one component is added to condensed water of steam separated by heating from food waste.

As shown in Example 1, a large amount of malodorous organic acid is generated in the process of drying food waste. These organic acids dissolve in the condensed water when the steam separated by heating from the garbage is condensed. Therefore, the condensed water produces a bad odor. Therefore, in this example, 0.5 g of condensed carbonate was added to 20 g of condensed water as a processing aid. As a result, the organic acid in the condensed water reacts with the added base component. Then, the organic acid became non-volatile, and the odor generated from the condensed water could be significantly reduced as compared with that before the addition of the processing aid.
Further, the pH of the condensed water was around 4 before the addition of the processing aid, but after the addition of the processing aid, the pH was 9, so it can be said that the conditions are such that the organic acid is less likely to volatilize.

The effect of the present embodiment can be obtained by adding the basic electrolyte so that the pH of the condensed water becomes 7 or more according to the amount of the condensed water.

As in Example 1, any processing aid may be used as long as one component of the processing aid is water-soluble and basic.

Further, it is possible to use a processing aid containing a basic electrolyte as one component in both the waste and the condensed water. (Embodiment 4) Still another embodiment of the present invention will be described with reference to FIG.

FIG. 3 is a longitudinal sectional view of the essential parts of a food waste drying apparatus according to an embodiment of the present invention.

Since a device having substantially the same structure as that of the first embodiment is used, detailed description of that part is omitted. The main difference is that a processing aid installation section 14 containing a basic electrolyte as one component is provided below the condensation section 4 (the passage section of the present invention). As the processing aid 15, calcium hydroxide contained in the non-woven fabric was set in the setting section 14.

In Example 4, raw garbage was treated in substantially the same manner as in Example 1. The difference is that in the process of heating and drying raw garbage, the condensed water of the steam heated and separated from the raw garbage passes through calcium hydroxide in the treatment aid installation portion 14 provided at the lower portion of the condensation portion 4. , Calcium hydroxide dissolves in condensed water. As a result, the trouble of adding the processing aid to the condensed water was saved, and the odor of the condensed water shown in Example 3 could be reduced.

It should be noted that a treatment aid containing a basic electrolyte as a component is provided or added at any of the drainage port which is the passage of the condensed water (the passage portion of the present invention) or the water storage portion. Thus, the effect of this embodiment can be obtained.

The same effect can be obtained even if the processing aid is used in the form of tablet, granule, powder or the like as it is. (Embodiment 5) Next, still another embodiment of the present invention will be described with reference to FIG.

FIG. 4 is a longitudinal sectional view of the essential parts of a food waste drying apparatus according to an embodiment of the present invention.

Since a device having substantially the same structure as that of the first embodiment is used, detailed description of that part is omitted. The main difference is that a processing aid installation portion 14 containing a basic electrolyte as one component is provided on the entire upper surface of the side surface of the condenser portion 4 (the passage portion of the present invention). In this embodiment, calcium hydroxide contained in the nonwoven fabric as the processing aid 15 is installed along the periphery of the inner surface of the upper part of the condensation part 4.

It was confirmed that when the raw garbage was dried with the constitution of this embodiment, the odor of condensed water was reduced and the odor of dried dust was significantly reduced as compared with the case where the above constitution was not provided. . This is due to the following reasons.

That is, the water vapor heated and separated from the garbage is condensed from the upper part of the condenser. When the basic electrolyte is present in the upper part of the condensation part, the organic acid component in the condensed water reacts with the base simultaneously with the condensation, so that it becomes non-volatile. As a result, the odor of condensed water is reduced. Further, when the condensed water remains in the condensing part after the drying treatment, conventionally, the organic acid dissolved in the condensed water may be volatilized and redeposit on the dry dust. However, in the present embodiment in which the organic acid in the condensed water existing in the condensation section is almost non-volatile, redeposition on the dry dust was prevented.

In this example, calcium hydroxide was used as the processing aid, but other basic electrolytes can also produce similar effects. Further, although the processing aid is contained in the nonwoven fabric, the present invention is not limited to this. For example, the processing aid itself is pressure-molded so as to match the shape of the upper side surface of the condensation part, or the processing aid is a nonwoven fabric. It is housed inside and molded into a corrugated shape,
Any configuration may be used as long as the processing aid is dissolved in the condensed water, such as the one in which the processing aid is stored in paper, the one in which the processing aid is stored in a resin molded product having an elution port, or the like. The same effect as the present embodiment can be obtained. The location of the processing aid is not limited to the upper part of the side surface, but may be, for example, layered on the entire surface of the condensation part or on the side surface of the condensation part so that the processing aid is more dissolved. (Embodiment 6) Next, still another embodiment of the present invention will be described with reference to FIG.

Since a device having the same structure as that of the first embodiment is used, detailed description of that part is omitted.

In Example 6, raw garbage was treated in substantially the same manner as in Example 1. The main difference is that in the process of heating and drying food waste, a water-soluble peroxide processing aid is added to the condensed water of steam separated from the food waste by heating.

In the garbage drying process, a large amount of odor is generated in addition to the organic acid. As a result of qualitative analysis of dissolved organic components of condensed water, it was found that odors such as water-soluble aldehydes were also dissolved in condensed water together with organic acid. In the present embodiment, the condensed water that is heated and separated from the garbage is condensed water 10
To 0 g, 1 g of sodium peroxocarbonate was added as a processing aid. A sensory evaluation of the odor of condensed water before and after the addition of the processing aid revealed that the odor became mild after the addition of the processing aid. Further, when the dissolved component of the condensed water was quantitatively analyzed by gas chromatography, no peak showing acetaldehyde before the addition was found after the addition. That is, when sodium peroxocarbonate is dissolved in condensed water, active oxygen is generated in water, and oxidizable odorous components such as aldehydes are oxidized to react with substances having low odor intensity. Further, since sodium peroxocarbonate used in this example shows basicity when dissolved in water, it also has the effect of making the organic acid non-volatile as in the case of dissolving the basic electrolyte. As a result of adding a processing aid for water-soluble peroxide,
The odor component in the condensed water could be reduced, and the generated odor could be suppressed.

In the present example, 1 g of sodium peroxocarbonate was added as a processing aid to 100 g of condensed water, but at any ratio as long as the pH of condensed water is 6.5 or more. May be. Although sodium peroxocarbonate was used as the peroxoacid salt, similar effects can be obtained with other peroxoacid salts such as sodium peroxoborate.

Further, even a compound having an oxidizing property such as a water-soluble peroxide such as hydrogen peroxide water has the same effect.

Further, in the present embodiment, the case where a person adds a processing aid having a water-soluble peroxide as one component has been described, but the present invention is not limited to this, and for example, as described in FIG. 3 or FIG. Of course, the processing aid may be contained in the non-woven fabric and disposed in the predetermined installation portion 14 or the like, and the same effect is obtained. (Embodiment 7) Next, still another embodiment of the present invention will be described with reference to FIG.

Since a device having the same structure as that of the first embodiment is used, detailed description of that part will be omitted.

In Example 7, raw garbage was treated in substantially the same manner as in Example 3. The main difference is that after adding a treatment aid for the water-soluble peroxide to the condensed water of steam separated by heating from food waste, an acidic substance is added to neutralize the condensed water.

In this embodiment, in the process of heating and drying raw garbage, the condensed water 10 heated and separated from the raw garbage is used.
To 0 g, 1 g of sodium peroxoate was added as a processing aid, and then an appropriate amount of hydrochloric acid was added to neutralize and adjust the pH to be around pH 7. When a processing aid containing sodium peroxoate as one component is added to the condensed water, the aldehyde in the condensed water is oxidized and reduced. Further, since the condensed water becomes basic, generation of organic acid can be suppressed. However,
Basic odor components such as amine and ammonia are likely to volatilize. That is, the odor may not be reduced depending on the type of processed garbage. In addition, when a processing aid containing sodium peroxoate as one component is added to the condensed water obtained by treating the raw garbage of fish such as sardines and mackerel, the condensed water changes from an organic acid odor to an amine odor. It was confirmed that it changed to. However, when hydrochloric acid was added to the condensed water to neutralize it, the amine odor was also non-volatile, and the odor intensity was reduced. That is, it was possible to suppress the generation of acidic odors such as organic acids, basic odors such as amines, and neutral odors such as aldehydes, and to significantly reduce the odor generated from condensed water. In the process of heating and drying raw garbage, by adding a water-soluble peroxide to the condensed water heated and separated from the raw garbage, the odorous component in the condensed water can be reduced.
However, when the condensed water in which the water-soluble peroxide is dissolved becomes acidic, the organic acid odor component volatilizes from the condensed water.
When the condensed water becomes basic, basic odor components such as ammonia and amines are volatilized. Therefore, after reducing the neutral odor with peroxide, the condensed water is neutralized to suppress the volatilization of basic and acidic odors. As a result, it was possible to significantly reduce the odor generated from the condensed water.

In this example, sodium peroxocarbonate was used as the peroxoacid salt as the water-soluble oxide, but other peroxoacid salts such as sodium peroxoborate and water-soluble peroxides such as hydrogen peroxide solution were used. It may be a compound having an oxidizing property.

Further, in the present embodiment, the case where a processing aid having a water-soluble peroxide as one component is used as the processing aid to be added first has been described, but the present invention is not limited to this, and for example, a basic Of course, a processing aid having an electrolyte as one component may be used first.

Although hydrochloric acid was used as the neutralizing agent, the present invention is not limited to this. For example, if acidic, sodium hydroxide, potassium carbonate, etc. can be used depending on the pH of the condensed water in the ground water. Inorganic basic compounds, and basic acids such as boric acid and oxalic acid may be used as long as they have little odor, and the same effects as those of the examples can be obtained.

As described above, according to this example, in the process of heating and drying food waste, the addition of a processing aid containing one component of the basic electrolyte to the food waste makes it possible to oxidize the food waste. The organic acid generated by the reaction with the basic component makes the organic acid non-volatile, and reduces the odor generated from the dried food waste.

Further, there are provided a storage portion for food waste, a heating means for heating the food waste, a water vapor condensing portion, a storage portion for a processing aid containing one component of the basic electrolyte, and a means for introducing the processing aid. In the apparatus for drying food waste, the processing aid is added to the food waste during processing by the charging means under the optimum conditions. As a result, the organic acid generated by the oxidation of the food waste reacts with the basic component, so that the organic acid becomes non-volatile and the odor generated from the dried food waste is reduced. Furthermore, the labor of adding a processing aid can be saved.

In the process of heating and drying raw garbage, by adding a processing aid having a basic electrolyte as one component to the condensed water of steam generated when the raw garbage is heated, the condensed water is added to the condensed water. The dissolved organic acid reacts with the basic component. As a result, the organic acid becomes non-volatile, and the odor generated from condensed water is reduced.

Further, it has a storage section for food waste, a heating means for heating the food waste, a condensation section for water vapor, and a water storage section for condensed water. In a food waste drying treatment apparatus provided with a treatment aid containing a basic electrolyte as one component, the treatment aid dissolves in the condensed water when the condensed water passes through the treatment aid. As a result, the labor of adding the processing aid to the condensed water is saved, and the odor of the condensed water is reduced.
In addition, in the structure in which the processing aid containing the basic electrolyte as one component is provided on the entire surface of the condensing part, the upper part of the side surface, or a part of the side surface, the basic electrolyte is dissolved in the condensed water to remove the odor of the condensed water as described above. Reduce. Furthermore, since the organic acid in the condensed water existing in the condensation part is made almost non-volatile, it is prevented from redepositing on the dry dust and the odor of the dry dust is significantly reduced.

In addition, in the process of heating and drying food waste, by adding a processing aid containing water-soluble peroxide as one component to the condensed water heated and separated from the food waste, active oxygen is added to the condensed water. Is generated, oxidizable odorous components such as aldehydes are oxidized and reacted with a substance having low odor intensity. As a result, the odorous components in the condensed water can be reduced and the generated odor can be suppressed.

In addition, in the process of heating and drying the food waste, after adding a processing aid having a water-soluble peroxide as one component to the condensed water heated and separated from the food waste, after adding the processing aid. If the condensed water is basic, an acidic substance is added, and if it is acidic or neutral, a basic substance is added to neutralize the condensed water. In this treatment method, after neutral odor is reduced by peroxide, condensed water is neutralized to suppress volatilization of basic and acidic odors. As a result, the odor generated from the condensed water is significantly suppressed. By performing the treatment as described above, it is possible to achieve the drying treatment for reducing the odor from the dust treated by the food waste drying treatment apparatus or the condensed water generated in the treatment process.

In the above embodiment, the case where the processing aid is disposed in a part of the condensing part has been described. However, the present invention is not limited to this. A passage space formed between the portion 4 and the heat insulating container 1
The location is not limited as long as it is a wall portion or the like, that is, a portion through which the gas separated from the garbage and / or the liquid generated by condensing the gas passes.

[0094]

EFFECTS OF THE INVENTION As is clear from the above, the present invention has the advantage that the odor of dried garbage or the condensed water separated from the garbage can be further reduced as compared with the conventional one. Have.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of essential parts of a food waste drying apparatus according to first, third, sixth and seventh embodiments of the present invention.

FIG. 2 is a longitudinal sectional view of essential parts of a food waste drying apparatus according to a second embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of essential parts of a food waste drying apparatus according to a fourth embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of essential parts of a food waste drying apparatus according to a fifth embodiment of the present invention.

[Explanation of symbols]

 2 Storage part 4 Condensing part 6a Heating part heater 6b Heating part fan 7 Drainage port 10 Water storage part 12a Cylinder 12b Control part 13 Nozzle 15 Processing aid

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical indication location F26B 9/06 Q 25/00 Z (72) Inventor Jiro Suzuki, 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Denki Sangyo Co., Ltd.

Claims (25)

[Claims] 1. A food waste drying treatment apparatus comprising: a storage unit for storing food waste; and a heating means for heating and drying the food waste stored in the storage unit. A method for treating food waste, characterized in that, when the food waste is stored in a storage unit and heated and dried, a processing aid for deodorization is added to the storage unit at the same time and / or at a different time from the storage of the food waste. . 2. A storage unit for storing food waste, a heating means for heating and drying the food waste stored in the storage unit, and a heating unit provided outside the storage unit for the food waste. Using a food waste drying treatment apparatus provided with a passage part through which a liquid separated from the gas and / or a liquid produced by condensing the gas and a storage part for storing the liquid are used, When stored in a storage unit and heated and dried, a processing aid for deodorization is added to the passage unit and / or the storage unit at the same time and / or at a different time from the storage of the food waste. How to dispose of garbage. 3. After the processing aid is added, if the food waste is basic, an acidic substance is added as another processing aid, and if the food waste is acidic or neutral, The method for treating food waste according to claim 1 or 2, wherein the food waste is neutralized by adding a basic substance as another processing aid. 4. The method according to claim 1, 2 or 3, wherein the processing aid is a processing aid containing a basic electrolyte as one component. 5. The method for treating food waste according to claim 1, 2 or 3, wherein the treatment aid is a treatment aid containing a water-soluble peroxide as one component. 6. The method for treating food waste according to claim 5, wherein the water-soluble peroxide is a peroxo acid salt. 7. The peroxo acid salt is a peroxo carbonate,
The raw garbage treatment according to claim 6, wherein one component or a mixture of two or more components selected from hydrogen peroxide adducts of peroxoborate or other inorganic weak acid salt is used as one component. Method. 8. The method for treating food waste according to claim 5, wherein the water-soluble peroxide is a hydrogen peroxide solution. 9. The method for treating food waste according to claim 4, wherein the basic electrolyte is an alkali metal hydroxide salt or an alkaline earth metal hydroxide salt. 10. The method for treating food waste according to claim 9, wherein the hydroxide salt is calcium hydroxide. 11. The method for treating food waste according to claim 4, wherein the basic electrolyte is an inorganic weak acid salt of an alkali metal or an inorganic weak acid salt of an alkaline earth metal. 12. The method of treating food waste according to claim 11, wherein the weak inorganic acid salt is a carbonate. 13. The method of treating food waste according to claim 12, wherein the carbonate is potassium carbonate. 14. The method of treating food waste according to claim 4, wherein the basic electrolyte is an alkaline earth metal. 15. The method of treating food waste according to claim 9, wherein a fragrance is added as another component of the treatment aid. 16. A storage unit for storing food waste, a heating means for heating and drying the food waste stored in the storage unit, and a basic material for heating and drying the food waste. Operation means of charging means for charging a processing aid containing one component of an electrolyte into the storage part at a predetermined time, a storage part for storing the processing aid supplied to the charging means, and operation of the charging means. And a control unit for controlling the food waste. 17. A storage unit for storing food waste, a heating means for heating and drying the food waste stored in the storage unit, and a heating unit provided outside the storage unit for the food waste. Gas and / or a passage part through which a liquid produced by condensing the gas passes, and a storage part for storing the liquid, and all or part of the passage part, and / or the storage An apparatus for drying food waste, characterized in that a processing aid for deodorization can be disposed in the portion. 18. The food waste drying treatment apparatus according to claim 17, wherein the treatment aid is a treatment aid containing a basic electrolyte as one component. 19. The food waste drying treatment apparatus according to claim 17, wherein the treatment aid is a treatment aid containing a water-soluble peroxide as one component. 20. The part of the passage is a drain port provided at the bottom of the passage, and the processing aid is dissolved in the liquid.
The described equipment for drying food waste. 21. The entire passage portion is the entire inner wall portion thereof, and the portion of the passage portion is an upper portion of the inner wall side surface or at least a portion of the inner wall side surface portion, and the processing aid is The food waste drying apparatus according to claim 18 or 19, wherein the food waste drying apparatus is adapted to be dissolved in the liquid. 22. The apparatus for drying food waste according to claim 20, wherein the processing aid is pressure-molded so as to match the shape of the inner wall portion of the passage portion. 23. The food waste drying treatment apparatus according to claim 20 or 21, wherein the treatment aid is contained in a water-permeable material such as paper or nonwoven fabric. 24. The processing aid is contained in a corrugated non-woven fabric.
The apparatus for drying food waste according to 0 or 21. 25. The food waste drying treatment apparatus according to claim 20, wherein the processing aid is contained in a resin-made processing aid storage member having an elution port.