JPH09131581A - Treatment of garbage and its garbage treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for treatment of garbage which decreases the malodors generated from the garbage itself and prevents a user from having an uncomfortable feel even indoors and a garbage treating device. SOLUTION: Steam and a large amt. of org. gases are generated when the garbage 23 is heated and dried by a drying heater 6. These org. gases are mostly malodorous materials. The malodorous materials include materials which are contained in the garbage itself and are evaporated by temp. rising and materials which are generated and evaporated by the oxidation and decomposition of the components of the garbage by heating and the chemical reaction of the components of the garbage with each other. The garbage 23 and additives 26, such as alkaline materials, are charged together into this device. Otherwise, the additives 26 are charged near the garbage 23 in the first half of the drying process. While the garbage 23 and the additives 26 are agitated and mixed by rotary blades 4, both are dried, by which the effect of the additives 26 are more effectively exhibited and the odorous materials on the surfaces of the garbage 23 are decreased and denatured. The smells of the treated garbage itself are thus decreased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating garbage generated from general households, cafeterias, restaurants, fast food restaurants, etc., particularly garbage with odor, leftover food, or so-called kitchen waste such as packaging containers thereof. The present invention relates to a garbage disposal device.

[0002]

2. Description of the Related Art Kitchen waste from a kitchen, dining room or kitchen at home is temporarily stored in a trash can and then handed over to a disposal company several days later. However, because of the odor peculiar to foods and foodstuffs and the odor of putrefaction during storage, it is disliked to store them in a trash box or handle the stored trash. On the other hand, the amount of waste to be discharged continues to increase year by year, and the administration is having trouble securing a treatment site and increasing the time and effort required for treatment. Therefore, recently, using a disposer that crushes garbage and flows it into the sewage as it is, or a heating means such as a microwave, a heater, or steam, the garbage is dried or incinerated to reduce the amount of dust and store it after reducing the odor. A method, a method of decomposing garbage by microorganisms to reduce the amount of garbage, reducing the odor, and storing, has been put into practical use or proposed.

The disposer has a remarkably high BOD of treated effluent, which imposes a burden on the sewage treatment plant, and is not a preferable treatment method. In the incineration method, the equipment must have a structure capable of withstanding high temperatures, extremely high durability and safety are required, and it is dangerous to install it indoors.

[0004]

When the drying process is performed, most of the spoiled odors can be removed. However, the oxidative odor generated during heating and the odor contained in foodstuffs are not completely lost, so the odor diffuses when the device is opened to take out the dried product. In addition, there is a problem in that the odor remains in the dried dust, which causes discomfort. Further, there is a problem that a malodorous substance which is a decomposition product adheres to a portion constituting the inside of the apparatus and then the malodorous substance diffuses.

The present invention is intended to solve such a conventional problem, and reduces unpleasant odors generated when the garbage processing machine is opened and closed and when the garbage is processed and the inside thereof is uncomfortable. It is an object of the present invention to provide a garbage disposal method and a garbage disposal device that do not contain waste.

[0006]

Means for Solving the Problems The method of the present invention is a method for treating kitchen waste in which kitchen waste and an alkaline substance are mixed by stirring, and dried by heating to reduce the amount, and the alkaline substance is added together with the kitchen waste or at the beginning of the drying step. By doing so, it is possible to neutralize the acidic substances emitted from vegetables and fruits and to heat and dry the kitchen waste in a nearly neutral state.

Further, the present invention is provided with a stirring means and a heating means for treating the above-mentioned kitchen waste, and by adding an alkaline substance together with the kitchen waste or at the beginning of the drying process, the acidity generated from vegetables, fruits, etc. It is possible to heat and dry the kitchen waste in a neutral state by neutralizing the substance.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a method for treating kitchen waste in which kitchen waste and an alkaline substance are mixed with stirring, and dried by heating to reduce the amount of the alkaline substance together with the kitchen waste or a drying step. By adding it at the beginning of
It is possible to heat and dry the kitchen waste in a neutral state by neutralizing the acidic substances emitted from fruits and the like.

Further details will be described. When kitchen waste such as vegetables, meat, fish, fruits and seasonings is heated and dried, a large amount of water vapor and a large amount of organic gas are generated. This organic gas is almost a foul-smelling substance. Odorous substances are those that the substances contained in the garbage themselves evaporate due to temperature rise, and the components of the garbage are oxidized or decomposed by being heated, or they are generated by a chemical reaction between the components of the garbage and evaporate. There is something. Examples of the former include organic acids for seasonings, vegetables,
There are alcohols of fruits, terpenes, methyl sulfide, methyl disulfide, amines of fish and organic acids of spoilage products, hydrogen sulfide and methyl mercaptan. Examples of the latter include organic acids and aldehydes in which lipids are oxidized, nitrogen compounds and sulfur compounds in which proteins are oxidatively decomposed, and furfural and pyrazines formed by amino-carbonyl reaction of amino acids and sugars. In particular, the concentration of organic acid is high. Since these odorous substances are mixed, they are extremely unpleasant and endless.

The substances contained in the odor emitted from the kitchen waste that has been dried are mostly limonene, aldehydes, disulfides, trisulfides, and organic acids, and the odor emitted from the liquid collected by condensing the vapor generated during drying. The substances contained in are mostly organic acids, alcohols, amines, ammonia, aldehydes, sulfides, and disulfides. Unless the kitchen waste is composed of only fish and meat, the dried kitchen waste and the condensed water are acidic.

The inventors of the present invention have been able to reduce the amount of kitchen waste in the research of kitchen waste, but suffered from the odor remaining in the processing equipment and the smell of the kitchen waste, and researched a method for reducing them, leading to the present invention. . According to the above-mentioned treatment method, by throwing the garbage and the alkaline substance together, or by throwing the alkaline substance in the first half of the drying step and further drying while stirring and mixing the garbage and the alkaline substance, vegetables, fruits, etc. It is possible to heat and dry the kitchen waste in a state close to neutrality by neutralizing the acidic substances emitted from the kitchen. When the carbonyl compound and amino compound contained in the food material are heated in the coexistence, the Maillard reaction occurs and the food material turns brown. At the same time, it produces a unique odor. When the kitchen is strongly acidic, the Maillard reaction produces intermediate products such as furfural which are malodorous components. Therefore, by adding an alkaline substance and drying it with stirring to make it neutral to weakly alkaline, a large amount of fragrant pyrazine odors can be generated, and it is possible to relieve the foul odors in dry kitchen waste and dry rooms. Is.

[0012] The invention according to claim 2 of the present invention is a method for treating kitchen waste, in which the garbage and the hydrophilic porous substance are stirred and mixed, and dried by heating to reduce the weight. According to this treatment method, the garbage is attached to the garbage. Free water, water that has ruptured cell membranes of vegetables and fruits due to swelling and crushing due to heating and components dissolved in water, and meat juice released when heat and coagulation of protein of meat and fish are hydrophilic porous The substance absorbs. Thus, a large amount of water is absorbed by the hydrophilic porous substance, and water is evaporated from these surfaces. Therefore, the evaporation area is widened and the drying is fast, so that the drying occurs uniformly. If the water on the garbage surface disappears quickly, the odorous substances will come into good contact with the air and will be rapidly evaporated. In addition, since the garbage is soaked in water for a short time, the amount of fat, amino acids, vitamins, etc. eluted from the garbage is reduced. Therefore, the amount of malodorous substances (fatty acids, aldehydes, amines, sulfur compounds) generated by oxidation or hydrolysis of these is reduced. Furthermore, since the drying is uniform, overdrying can be suppressed, and the generation of malodorous substances due to oxidation or hydrolysis of fat can be suppressed.

The invention according to claim 3 of the present invention is a method for treating kitchen waste in which the garbage and the catechins-containing polyphenol compound-containing substance are stirred and mixed, and dried by heating to reduce the weight. Catechins contained in plants Polyphenol compounds and garbage contained in garbage or reacted with malodorous substances such as nitrogen compounds and sulfur compounds generated when garbage is decomposed by heating, and changed to a substance with less odor to dry. It can alleviate the foul odors of kitchen waste and dry rooms.

The invention according to claim 4 of the present invention is a method for treating kitchen waste, in which the kitchen waste and the oxidizer are stirred and mixed, and dried by heating to reduce the weight. According to this treatment method, the oxidizer is contained in the kitchen waste. It reacts with odorous substances such as nitrogen compounds, sulfur compounds and oxygen-containing compounds that are generated due to heat decomposition of garbage and garbage, and by oxidative decomposition changes to low molecular weight substances with less odor and facilitates volatilization. By doing so, it is possible to alleviate the foul odor inside the dry kitchen waste and the drying room.

The invention according to claim 5 of the present invention is a method for treating kitchen waste, wherein the garbage and the granular substance containing the terpene compound are stirred and mixed, and the mixture is heated and dried to reduce the weight. According to this treatment method, the terpene is used. Although the action of the compounds is not clear, it is said to have a deodorizing effect by chemically acting on the malodorous substance.
Further, it has a function of masking a bad odor due to the aromaticity of the terpene compound. Further, by using the plant granular material having the terpene compound, the kitchen waste can be uniformly stirred and the generation of the burning odor of the kitchen waste can be suppressed.

The inventions according to claims 6 to 10 of the present invention are:
Regarding the kitchen waste processing apparatus for performing the processing method according to any one of claims 1 to 5, specifically, it has a stirring means for stirring the kitchen waste and a substance to be added, and a heating means for heating and drying the kitchen waste, and a heating means. The heating and drying can be advanced without operating the stirring means and generating a bad odor.

Hereinafter, embodiments of the present invention will be described in detail. (Embodiment 1) First, the configuration of a garbage processing apparatus according to an embodiment of the present invention will be described with reference to FIG. In the figure, 1 is a heat insulating container. Here, as an example, a vacuum heat insulating container in which the space formed by the inner wall and the outer wall is evacuated is shown. However, the structure is not limited to this, and a heat insulating material such as glass wool may be used. Reference numeral 2 denotes a kitchen storage container installed in the heat insulation container 1 so as to be freely taken out. A fixed blade 3 and a rotary blade 4 are provided in the garbage storage container 2 as means for crushing and stirring the garbage. The fixed blade 3 is provided on the inner bottom portion of the kitchen storage container 2, and is fixed to the rotary shaft 5 protruding from the bottom surface of the kitchen storage container 2. Above the garbage storage container 2, there is provided a drying heater 6 as a kitchen heating means, and a drying fan 7 for evenly feeding the heat of the drying heater 6 into the garbage storage container 2. 8 is a drying fan motor. A condensing section 9 for condensing water vapor generated from kitchen waste is arranged on the outer peripheral portion of the heat insulating container 1.

A blower fan 10 for cooling the outer surface is installed outside the condenser 9. The rotation of the rotary blade 4 is performed by moving it using the drive motor 11 and the reduction gear 12. A condensed water outflow pipe 13 and an exhaust pipe 14 are connected to the lower portion of the condenser section 9. A condensed water container 15 is detachably provided at the tip of the condensed water outflow pipe 13. A deodorizing device 16 is provided on the exhaust pipe 14. Reference numeral 17 is an air supply pump for sending clean indoor air into the garbage storage container 2,
A heater mounting plate 18 is integrated with the lid 19, and an air supply pipe 20 is connected to the heater mounting plate 19, and the other end of the air supply pipe 20 is connected to the air supply pump 17. 21
Is the main body of the garbage processor, and the lid 19 is openable and closable on the main body 21 of the garbage processor. The packing is sandwiched between the latch type handle 2
At 2, the lid 19 and the garbage processing machine main body 21 are fixed. 2
3 is kitchen garbage, and 24 is a vapor detection sensor unit. Reference numeral 25 denotes an additive storage container provided on the upper portion of the garbage storage container 2, and the lid of the container 25 can be opened and closed. Additive storage container 2
In No. 5, the additive 26 is contained. The deodorizing device 16 is provided with a platinum-based honeycomb catalyst in the gas passage, and a heater is built in the center of the catalyst.

The first embodiment will be described in detail below. Next, the operation of the first embodiment of the kitchen garbage processing machine configured as described above will be described. The kitchen waste 23 put in the kitchen storage container 2 is agitated and crushed between the fixed blade 3 and the rotary blade 4. As the kitchen waste, fish, meat, rice, citrus fruits, vegetables, egg shells, soy sauce, sauce, dressing and sugar in a weight ratio of 10: 10: 10: 30: 30:
About 700 g of standard kitchen waste mixed with 2: 2: 2: 2: 2 was used. At the same time, it is heated by the drying heater 6 and 110 ° C. to 150 ° C. in the garbage storage container 2 by the drying fan 7.
Diffuse heat controlled to ℃.

Also, steam containing odorous components is generated from the kitchen waste 23, and the heat insulating container 1 is opened from the opening of the kitchen storage container 2.
Flows into the condenser section 9 outside the. And the water vapor is condensed in the condenser 9
At, the cooling fan 10 cools and condenses, and the condensed water flows out through the condensed water outflow pipe 13 and collects in the condensed water container 15. On the other hand, the water vapor containing the odorous component that cannot be completely condensed is guided from the exhaust pipe 14 to the deodorizing device 16, where it is oxidatively decomposed by the catalyst and the odorous component is purified and discharged indoors.

The temperature at which the catalyst of the deodorizing device 16 has an oxidizing activity (in this case, the amount of water contained in the odor is large,
After the temperature is raised to (00 ° C. or higher), the energization of the drying heater 6 is started. The electric capacity of the drying heater 6 of this embodiment was 400 watts.

An alkaline substance is put in advance in the additive container 25 as the additive 26. Next, the kitchen waste 23 is put into the kitchen storage container 2, the lid 19 is closed, and the power of the kitchen processing machine is turned on. Then, first, the heater of the deodorizing device 16 is energized. When the catalyst of the deodorizing device 16 reaches the activation temperature, the drying heater 6 is energized, and at the same time, the drying fan 7,
The operation of the cooling fan 10 is started. When the drying heater 6 reaches a predetermined temperature for about 30 minutes, free water evaporates. In this time zone, the rotary blade 4 is normally rotated for 5 seconds and then reversely rotated for 5 seconds twice, and then the additive storage container 25 is automatically opened and the additive 26 of the alkaline substance is put on the kitchen 23. .
After that, the rotary blade 4 was repeatedly rotated forward for 5 seconds and reversely for 5 seconds at intervals of 5 minutes. The rotation speed in this case was about 60 rpm. The rotation frequency and rotation number here are not limited to the conditions of this example, and the kitchen waste 23 and the additive 26 can be sufficiently mixed and the kitchen waste 2
It is only necessary that 3 is appropriately pulverized and efficiently dried.

In the present embodiment, the addition of the additive 26 is performed after the free water is evaporated. When the alkaline substance is added in the presence of the free water, the free water is absorbed by the alkaline substance and the drying is not performed. This is because it will be late, and the additive 26
There is no great difference in the odor reducing effect even if the syrup is put in immediately after the lid 19 is closed. The purpose of stirring the kitchen waste 23 by rotating the rotary blade 4 before the addition of the additive 26 is to accelerate the evaporation of free water.

The steam detection sensor 24 has a high temperature because a large amount of steam is generated during the drying process, but at the end of drying, the steam generation is drastically reduced and the temperature becomes low. Vapor detection sensor 2
When 4 detects this, energization to the drying heater 6 is stopped, the rotary blade 4 is stopped at the same time, and the operation of the air supply pump 17 is started. When the operation of the air supply pump 17 is started, clean outside air is sent into the kitchen storage container 2 through the air supply pipe 20. The air flow rate at this time was about 3 l / min. The outside air is a deodorizing device 16 that removes a strong odor accumulated in the garbage storage container 2 from the condenser 9 through the exhaust pipe 14.
It is extruded and deodorized and purified and put out indoors. Then about 2
After about 0 minutes, the drying fan 7 and the cooling fan 1
0, power supply to the deodorizing device 16 and the air supply pump 17 is stopped.

Here, as the alkaline substance, baking soda NaHCO ₃ and slaked lime Ca (OH) _{2 which} are easily available at home,
Silica-Magnesia (Mizukanite SM-100 manufactured by Mizusawa Chemical Co., Ltd. was used. The magnesia content was about 5).
0% by weight. ) Granular oxide, etc., but kitchen waste 2
Other alkaline substances may be used as long as they have the ability to neutralize the liquid coming out of 3. Among them, slaked lime or the like is preferably used as a material that can use the treated dry kitchen waste as a fertilizer for plants.

(Second Embodiment) The difference between the operation of the second embodiment and the operation of the first embodiment will be described. In the present embodiment, a hydrophilic porous substance is previously placed as the additive 26 in the additive storage container 25. Next, the kitchen waste 23 is put into the kitchen storage container 2, the lid 19 is closed, and the power of the kitchen processing machine is turned on. Then, first, the heater of the deodorizing device 16 is energized. When the catalyst of the deodorizing device 16 reaches the activation temperature, the drying heater 6 is energized, and at the same time, the drying fan 7 and the cooling fan 10 start operating. At the same time, the additive storage container 25 automatically opens, and the additive 2 of the hydrophilic porous substance is added.
6 is put on the kitchen waste 23. Then, turn the rotary blade 4 to 5
The normal rotation for 5 seconds and the reverse rotation for 5 seconds were repeated twice, and then the normal rotation for 5 seconds and the reverse rotation for 5 seconds were performed twice at 15-minute intervals. Dry heater 6
Reaches a predetermined temperature for about 30 minutes, free water evaporates.
Thereafter, the rotary blade 4 was repeatedly rotated forward for 5 seconds and reversely for 5 seconds at intervals of 5 minutes. After that, the same operation as in the first embodiment is performed. In the present embodiment, the hydrophilic porous material is added at the same time when the energization of the drying heater 6 is started.
This is because the free water of 3 is absorbed and separated and dispersed to promote the drying.

Here, examples of the hydrophilic porous material include natural zeolite, clay minerals such as bentonite, synthetic zeolite, sepiolite, etc., but any porous material having water absorbability may be used. Further, a granular substance is effective for separating and dispersing the kitchen waste 23 to accelerate the drying. Bentonite exhibits a weak alkali when dissolved in water, and is considered to have the same effect as that of the first embodiment.

(Embodiment 3) The difference between the operation of the third embodiment and the operation of the first and second embodiments will be described. A catechin-type polyphenol compound-containing substance as an additive 26 is put in the additive storage container 25 in advance. Next, put the kitchen waste 23 into the kitchen storage container 2 and close the lid 19,
Turn on the garbage processor. Then, first, the deodorizing device 1
The heater of No. 6 is energized. When the catalyst of the deodorizing device 16 reaches the activation temperature, the drying heater 6 is energized, and at the same time, the drying fan 7 and the cooling fan 10 start operating. Dry heater 6
Reaches a predetermined temperature for about 30 minutes, free water evaporates.
After this time period, the rotary blade 4 is rotated forward for 5 seconds at 5 minute intervals.
The reversal was repeated for a second. After about 1 hour has elapsed from the start of rotation of the rotary blade 4, the additive storage container 25 is automatically opened, and the additive 26 of the catechin polyphenol compound-containing substance is put on the kitchen 23. When the additive 26 is added, the kitchen waste 23 is already 60% or more dry. Since a malodorous substance comes out together with water vapor during drying, it is more efficient to add the catechin-type polyphenol compound-containing substance after drying to some extent in order to reduce the odor of the garbage 23. However, if the additive is added after the drying has proceeded too much, the reaction time between the additive and the malodorous substance is shortened, and the effect is reduced. After that, the same operation as in the first embodiment is performed.

Here, as the catechin polyphenol compound-containing substance, one extracted from tea was particularly effective. Further, in order to separate and disperse the garbage 23 to accelerate the drying, and to improve the contact between the catechin-type polyphenol compound-containing substance and the malodorous substance, a granular porous substance impregnated with the catechin-type polyphenol compound is effective. .

(Embodiment 4) The operation of the fourth embodiment is almost the same as the operation of the third embodiment. An oxidizing agent is put in advance in the additive container 25 as the additive 26. Next, the kitchen waste 23 is put into the kitchen storage container 2, the lid 19 is closed, and the power of the kitchen processing machine is turned on. Then, first, the heater of the deodorizing device 16 is energized. Deodorizer 16
When the temperature of the catalyst reaches the activation temperature, the drying heater 6 is energized, and at the same time, the drying fan 7 and the cooling fan 10 start operating. When the drying heater 6 reaches a predetermined temperature for about 30 minutes, free water evaporates. After this time period, the rotary blade 4 was repeatedly rotated in the forward direction for 5 seconds at a 5-minute interval for 5 seconds. About 1 hour after the rotation of the rotary blade 4 is started, the additive storage container 25 is automatically opened, and the oxidant additive 26 is removed from the kitchen 23.
Is thrown on. When the additive 26 is added, the kitchen waste 23 is already 60% or more dry. Since the malodorous substance comes out together with water vapor during the drying, it is more efficient to reduce the odor of the kitchen waste 23 by adding the oxidizing agent after drying it to some extent. However, if the additive is added after it has been dried too much, the reaction time between the additive and the malodorous substance will be shortened,
The effect becomes smaller. When the vapor detection sensor 24 detects the completion of drying, the power supply to the drying heater 6 is stopped, the rotary blade 4 is stopped at the same time, and the operation of the air supply pump 17 is started. When the operation of the air supply pump 17 is started, clean outside air is sent into the kitchen storage container 2 through the air supply pipe 20.
The air flow rate at this time was about 3 l / min. As for the outside air, the strong odor accumulated in the garbage storage container 2 is pushed out from the condensing section 9 through the exhaust pipe 14 to the deodorizing device 16 to be deodorized and purified, and then discharged into the room. After about 20 minutes, the drying fan 7, the cooling fan 10, the deodorizing device 1
6. Stop energizing the air supply pump 17.

When an oxidant is added, the malodorous substance is oxidatively decomposed, but the gas concentration increases, so the air supply pump 17
It is essential to push out this gas during operation.

Here, as the oxidizing agent, there are chlorine-based oxidizing agent, oxygen-based oxidizing agent and the like, but it is desirable to use the oxygen-based oxidizing agent which has less adverse effect on the garbage disposal. The amount used is preferably 3 g to 10 g in the case of 700 g of kitchen waste. This amount is determined by the oxidizing power of the oxidizing agent, but if it is too small, there is no odor reducing effect,
If it is too much, the garbage itself will be oxidatively decomposed and the gaseous substances will rather increase and the odor will become stronger.

(Embodiment 5) Differences between the operation of the fifth embodiment and the first embodiment will be described. A granular substance containing a terpene compound as an additive 26 is put in the additive storage container 25 in advance. Next, the kitchen waste 23 is put into the kitchen storage container 2, the lid 19 is closed, and the power of the kitchen processing machine is turned on. Then, first, the heater of the deodorizing device 16 is energized. When the catalyst of the deodorizing device 16 reaches the activation temperature, the drying heater 6 is energized, and at the same time, the drying fan 7 and the cooling fan 10 start operating. When the drying heater 6 reaches a predetermined temperature for about 30 minutes, free water evaporates. After this time,
The rotary blade 4 was repeatedly rotated at 5 minute intervals for 5 seconds in the forward direction and 5 seconds in the reverse direction. About 1 hour after the rotation of the rotary blade 4 is started, the additive container 25 is automatically opened, and the terpene compound-containing granular material additive 26 is put on the kitchen 23. When the additive 26 is added, the kitchen 23 is already 60
% Or more dry. Since a malodorous substance comes out together with water vapor during drying, it is more efficient to add the terpene compound-containing granular substance after drying to some extent to reduce the odor of the garbage 23. However, if the additive is added after the drying has proceeded too much, the reaction time between the additive and the malodorous substance is shortened, and the effect is reduced. After that, the same operation as in the first embodiment is performed.

Here, as the terpene compound-containing granular substance, the one containing a liquid extracted from a tree such as a conifer or the tree itself is effective. Here, familiar sawdust was used.

In order to separate and disperse the kitchen waste 23 to accelerate the drying and to improve the contact with the malodorous substance, the substance impregnated with the granular porous substance is effective.

[0036]

Next, specific examples of the present invention will be described.

(Example 1) In this example, the additives shown in Examples 1-1, 1-2, and 1-3 of (Table 1) were added. The evaluation of this example is as follows. The case where the weight loss rate of the kitchen waste was dried to about 77% at the hot air temperature of 130 ° C. was evaluated. The odor sensory test was conducted by the following procedure. After about 30 minutes have passed after the drying treatment, put the garbage treatment machine in a box made of polyester film with an internal volume of 1 m ³ and seal it, then open the lid of the garbage treatment machine with a jig for 1 minute and then close it. The odor inside is released into the box. A panelist sniffed from the odor sniffing opening provided on the upper surface of the 1 m ³ box, and evaluated the strength, quality, and discomfort of the odor. The number of panelists was 6 or more, and the strength and discomfort were averaged by cutting up and down. The smell of condensed water was determined by sniffing directly above 10 cm.

[0038]

[Table 1]

As is clear from (Table 1), both the odor of dry kitchen waste and the odor of condensed water are weakened and the discomfort is reduced. In the examples of the present invention, the odor of dried kitchen waste has a less irritating odor and is mildly sweet and fragrant, as compared with the case of the comparative example without additives. Also, the odor of condensed water is reduced. In the case of a granular material such as silica-magnesia, it has the effect of stirring the kitchen waste as in the case of Example 2, and the dried kitchen waste becomes dry and the dried kitchen waste can be easily taken out.

The amount of the alkaline substance added in this embodiment is preferably in the range of 3 to 30 g per 700 g of kitchen waste. This amount depends on the alkalinity of the substance and the like. Baking soda is preferably 3 g to 10 g, and slaked lime and silica-magnesia particles are preferably 5 g to 20 g. If the amount is too small, there is no effect of reducing the odor, and if it is too large, an ammonia odor or an amine odor is generated, which has the opposite effect. Further, if too much alkaline substance is added, kitchen waste tends to stick to the inside of the container.

Example 2 This example was carried out by adding the additives shown in Examples 2-1, 2-2, 2-3 and 2-4 of (Table 1). The evaluation of this example was performed in the same manner as in Example 1.

As is clear from (Table 1), in this example, both the odor of dried kitchen waste and the odor of condensed water have less irritating odor and a weak odor as compared with the case where no additive of the comparative example is used, which is unpleasant. It also fades. Further, it also has an effect of stirring the kitchen waste, and the dried kitchen waste becomes dry and easy to take out the dried kitchen waste. Example 2-2 has a two-layer structure in which the surface of natural zeolite is coated with bentonite,
It is a granular material having a diameter of 2 mm to 5 mm.

In the present invention, the hydrophilic porous substance is preferably added in an amount of 10 to 50 g per 700 g of kitchen waste. This amount depends on, for example, the porosity of the material. If there is too little, there is no effect to reduce odor,
If the amount is too large, the effect does not increase, but the amount of dry garbage increases, and the purpose of reducing the amount of garbage cannot be achieved.

(Example 3) In this example, the additives shown in Examples 3-1 and 3-2 (Table 1) were added. The evaluation of this example was performed in the same manner as in Example 1.

As is clear from (Table 1), in this example, both the odor of dried kitchen waste and the odor of condensed water have less irritating odor and a weak odor as compared with the case where no additive of the comparative example is used, which is unpleasant. It also fades. Further, in the case of tea leaves, there is also an effect of dispersing the kitchen waste, and the drying progresses uniformly, and the kitchen waste becomes a dry one with less charring, and it is easy to take out the dried kitchen waste. Further, it has an effect that the tea leaves absorb the odor after the completion of drying.

In this example, the amount of the catechin-type polyphenol compound-containing substance added was 5 with respect to 700 g of kitchen waste.
It is desirable to add in the range of 0 g to 200 g. This amount is determined by the concentration of catechin polyphenol compounds, but if it is too small, there is no effect to reduce odor, if it is too large, the effect does not increase, but the amount of dry garbage increases, but the purpose of reducing the amount of garbage Cannot be achieved.

The 5% polyphenol solution of Example 3-2 was prepared by diluting Polyphenon G manufactured by Mitsui Norin.

Example 4 This example was carried out by adding the additives shown in Example 4 of (Table 1). The evaluation of this example was performed in the same manner as in Example 1.

As is clear from (Table 1), in this example, both the odor of dry kitchen waste and the odor of condensed water have less irritating odor and a weak odor as compared with the case of no addition of the comparative example, which is unpleasant. It also fades.

Example 5 In this example, the additives shown in Example 5 of (Table 1) were added as additives. The evaluation of this example was performed in the same manner as in Example 1.

As is clear from (Table 1), in this example, both the odor of dry kitchen waste and the odor of condensed water have less irritating odor and a weak odor as compared with the case where no additive of the comparative example is used. It also fades. In addition, it also has an effect of dispersing the garbage, and the drying proceeds uniformly so that the garbage becomes dry with little charring, and the dried garbage can be easily taken out.

In this embodiment, the amount of the terpene compound-containing granular substance added was 20 to 50 g per 700 g of kitchen waste.
It is desirable to add in the range of g. This amount depends on the concentration of the terpene compound, but if it is too small, there is no effect to reduce odor, if it is too large, the effect does not increase, but the amount of dry garbage increases, but the purpose of reducing the amount of garbage is achieved Can not do it.

[0053]

As described above, according to the invention described in claim 1 of the present invention, the kitchen waste and the alkaline substance are charged together, or the alkaline substance is charged in the first half of the drying step, while stirring and mixing. By drying, neutralizing the acidic substances emitted from vegetables and fruits and making them neutral to weakly alkaline,
It is possible to provide a method for treating kitchen waste that can generate a lot of fragrant odor and can mitigate the bad odor in the kitchen or the dry room.

According to the second aspect of the present invention, the garbage and the hydrophilic porous substance are stirred and mixed, and the mixture is heated and dried to reduce the weight, whereby the garbage is dried quickly and uniformly, and the odorous substance is eliminated. Since there is little generation and quick volatilization, it is possible to provide a method for treating kitchen waste that is capable of relieving a bad smell of dried kitchen waste and a dry room.

According to the invention of claim 3 of the present invention,
By mixing the kitchen waste and the catechins polyphenol compound-containing substance with stirring, and drying by heating to reduce the amount, the catechins polyphenol compound and the kitchen waste are contained in the kitchen waste or react with the malodorous substances generated by the kitchen waste being decomposed by heating. Therefore, it is possible to provide a method for treating kitchen waste that can reduce the odor of dried kitchen waste or a dry room, since it can be changed to a substance having less odor.

According to the invention of claim 4 of the present invention,
Stirrer and oxidizer are mixed with stirring, dried by heating and reduced to be contained in the kitchen waste, or reacted with a foul-smelling substance generated when the kitchen waste is decomposed by heat, resulting in oxidative decomposition to produce a low molecular odor. By changing to a substance with less
It is possible to provide a method for treating dried kitchen waste or kitchen garbage that can relieve a bad odor in a drying room.

According to the invention of claim 5 of the present invention,
Stirring and terpene compound-containing granular substances are stirred and mixed and heated and dried to chemically act on malodorous substances and deodorize, and the odor of terpene compounds masks the malodors, and granules make the garbage uniform. By suppressing the generation of burnt odor by stirring, it is possible to provide a method for treating garbage that is dried or that can reduce the malodor in the drying chamber.

Further, according to these means, a method for treating kitchen waste is provided, which not only reduces the odor of dried kitchen waste but also suppresses the odorous substance of water that evaporates and condenses and the odorous substance that adheres to the kitchen waste treatment machine. can do.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a garbage processing machine showing an embodiment of the present invention.

[Explanation of symbols]

 4 Rotating Blade (Stirring Means) 6 Drying Heater (Heating Means) 26 Additive

Claims (10)

[Claims] 1. A method of treating kitchen waste, wherein the kitchen waste and the alkaline substance are mixed with stirring and dried by heating to reduce the weight. 2. Garbage and a hydrophilic porous substance are mixed by stirring,
A method for treating kitchen waste by heating and drying to reduce the weight. 3. A method for treating kitchen waste, wherein the kitchen waste and the catechin-type polyphenol compound-containing substance are stirred and mixed, and dried by heating to reduce the weight. 4. A method for treating kitchen waste, wherein the kitchen waste and the oxidant are mixed with stirring, and dried by heating to reduce the weight. 5. A method for treating kitchen waste, wherein the kitchen waste and the terpene compound-containing granular substance are stirred and mixed, and dried by heating to reduce the weight. 6. A kitchen waste treating apparatus comprising a stirring means for stirring and mixing the kitchen waste and an alkaline substance, and a heating means for heating and drying the kitchen waste. 7. A kitchen waste treating apparatus provided with a stirring means for stirring and mixing the kitchen waste and the hydrophilic porous substance, and a heating means for heating and drying the kitchen waste. 8. A kitchen waste treating apparatus provided with a stirring means for stirring and mixing the kitchen waste and the catechin-type polyphenol compound-containing substance, and a heating means for heating and drying the kitchen waste. 9. A kitchen waste treating apparatus provided with a stirring means for stirring and mixing the kitchen waste and the oxidizing agent, and a heating means for heating and drying the kitchen waste. 10. A kitchen waste treating apparatus provided with a stirring means for stirring and mixing the kitchen waste and the terpene compound-containing granular substance, and a heating means for heating and drying the kitchen waste.