Method for treating feces

Abstract

To provide a method of treating excrement capable of greatly reducing the volume of a massive amount of excrement in a short time while suppressing a foul smell.SOLUTION: A method of treating excrement includes: repeating a drying step S3 of drying excrement 20 which is a treatment target to make dried excrement by exposing the excrement to smoke 40 generated when a fuel 30 is burned; and using, as the fuel 30 used in one drying step S3, the dried excrement obtained in another drying step S3 which is performed before the one drying step S3. In each drying step S3, it is preferable to reduce the moisture content of the dried excrement to 30% or lower. Alcohol can be added to the dried excrement used as the fuel 30 in each drying step S3. It is preferable when performing the drying steps S3 to cover the excrement 20 with deodorant powders 50, and it is also preferable to use, as the deodorant powders 50, rice bran or that added with a hygroscopic agent. Used fuel which is generated in each drying step S3 can be used as a fertilizer.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a method for treating feces to reduce their volume.

Background Art

[0002] Livestock feces such as chicken manure contain a large amount of phosphorus essential for plant growth and can thus be used as fertilizer. However, since livestock feces emit a bad odor, they cannot be used as fertilizer in their original state. Conventionally, in order to suppress the bad odor, livestock feces have been decomposed by microorganisms to be composted (see, for example, Patent Document 1), or livestock feces have been incinerated (see, for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the method of composting livestock feces, biodegradation by microorganisms must be awaited, which requires a long time. Therefore, this method is not suitable for treating the large amounts of livestock feces generated daily. Further, even if all of the large amount of livestock feces could be composted, it would be difficult to sell all of them as fertilizer, and ultimately, there would be a problem of difficulty in treating the remaining unsold fertilizer.

[0005] On the other hand, in the method of incinerating livestock feces, it is necessary to perform post-treatment on the obtained incineration ash. This is because the incineration ash of livestock feces usually shows a high pH value (about pH 12 to 13 when dissolved in water), and if this is scattered on the soil as it is, it will increase the pH of the soil and may conversely have an adverse effect on the growth of crops.

[0006] In this regard, in the method of Patent Document 2 mentioned above, phosphorus is eluted by mixing the incineration ash of livestock manure and an aqueous sulfuric acid solution, and the eluted phosphorus is recovered as an inorganic phosphorus compound. Specifically, a phosphorus elution step of mixing the incineration ash of livestock manure and an aqueous sulfuric acid solution to obtain a first solid-liquid mixture, a phosphorus eluate obtaining step of subjecting the first solid-liquid mixture to solid-liquid separation to obtain a phosphorus eluate which is the liquid part, a calcium sulfate precipitation step of mixing the phosphorus eluate and calcium chloride to prepare a second solid-liquid mixture, a sulfuric acid removal step of subjecting the second solid-liquid mixture to solid-liquid separation to obtain a sulfuric acid removal liquid which is the liquid part containing phosphorus, an inorganic phosphorus compound precipitation step of mixing the sulfuric acid removal liquid and calcium hydroxide to obtain a third solid-liquid mixture, and an inorganic phosphorus compound obtaining step of subjecting the third solid-liquid mixture to solid-liquid separation to obtain a solid part containing an inorganic phosphorus compound. By going through these steps, an inorganic phosphorus compound that can be used as a fertilizer is obtained.

[0007] However, the method of Patent Document 2 has a problem that the treatment cost is high because it requires a complex plant. In addition, in the method of the same document, in addition to the target inorganic phosphorus compound, a solid part obtained in the phosphorus eluate obtaining step (incineration ash after eluting phosphorus), a solid part obtained in the sulfuric acid removal step (precipitate containing calcium sulfate), a liquid part obtained in the inorganic phosphorus compound obtaining step (supernatant after precipitating phosphorus), etc. are generated in large quantities as waste. These wastes need to be treated again. Therefore, even if the method of the same document can be put into practical use as a method for obtaining an inorganic phosphorus compound, it lacks practicality as a method for treating livestock manure.

[0008] The present invention has been made to solve the above problems, and provides a method for treating manure that can significantly reduce the volume of a large amount of manure in a short time while suppressing malodor without requiring a complex plant.

Means for Solving the Problems

[0009] The above problems are The drying process of exposing feces, which is the object to be processed, to the smoke generated when fuel is burned is repeatedly performed to dry the feces into dried feces. As the fuel used in one drying process, dried feces obtained from another drying process performed before the one drying process are used. A method for treating feces, characterized by the above. This is solved by providing the above.

[0010] In the method for treating feces of the present invention, the malodor of feces is reduced by exposing the feces to fumes. For this reason, a large amount of feces can be processed in a short time. Further, the method for treating feces of the present invention can be implemented as long as there is equipment (such as a smoking furnace) capable of exposing feces to fumes. For this reason, the processing cost can also be suppressed. Furthermore, in the method for treating feces of the present invention, as the fuel used in one drying process, dried feces obtained from another drying process performed before the one drying process are used. For this reason, not only can the fuel cost be suppressed, but when the fuel (dried feces) is burned, the feces (dried feces) can also be significantly reduced in volume (for example, reduced to about 1 / 10).

[0011] In the method for treating feces of the present invention, the used fuel generated in each drying process (the incineration ash of dried feces after burning as fuel) can also be used as fertilizer. Thereby, it is possible to prevent the generation of waste. Further, as described above, since the fuel after combustion (the incineration ash of dried feces) is significantly reduced in volume, the risk of unsold fertilizer can also be suppressed.

[0012] In the method for treating feces of the present invention, in each drying process, it is preferable to reduce the water content of the dried feces to 30% or less. Thereby, it becomes possible to make the dried feces more combustible as fuel.

[0013] In the method for treating manure of the present invention, alcohol can also be added to the dried manure used as fuel in each drying step. As a result, it becomes possible to burn the dried manure without reducing the water content of the dried manure too much. In addition, it becomes possible to increase the heat generated when the fuel (dried manure) burns. Therefore, it also becomes possible to shorten the time required for each drying step.

[0014] In the method for treating manure of the present invention, it is preferable to cover the manure during the drying step with a deodorizing powder. As a result, it becomes possible to suppress not only the bad odor after the drying step is performed, but also the bad odor during the drying step.

[0015] As the above deodorizing powder, rice bran or leaf mold can be preferably used. In particular, when rice bran is used as the deodorizing powder, after performing the method for treating manure of the present invention using the rice bran sent from the rice production area as the deodorizing powder, it becomes possible to construct a material transportation cycle in which the incineration ash of the dried manure after being burned as fuel in the treatment method is sent back to the above rice production area as fertilizer.

[0016] In addition, it is also preferable to add a moisture absorbent to the above deodorizing powder. This is because, for example, when only rice bran is used as the deodorizing powder, the deodorizing powder may ferment and mold may grow on the deodorizing powder, generating a fermentation odor. By adding a moisture absorbent to the deodorizing powder, it is possible to make it difficult for the deodorizing powder such as rice bran to ferment. As the moisture absorbent used at this time, porous granular materials such as perlite, zeolite, vermiculite, and fine grains or granular materials of green tuff are suitable. Among them, when perlite is used, most of the absorbed water can be discharged while efficiently absorbing water by capillary action.

Effects of the Invention

[0017] As described above, according to the present invention, it is possible to provide a method for treating manure that can significantly reduce the volume of a large amount of manure in a short time while suppressing bad odor without requiring a complicated plant.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0019] A preferred embodiment of the method for treating feces of the present invention will be described more specifically with reference to the drawings. The configurations described below are merely preferred embodiments, and the technical scope of the method for treating feces according to the present invention is not limited to the configurations described below. The method for treating feces according to the present invention can be appropriately modified without departing from the gist of the invention.

[0020] FIG. 1 is a diagram for explaining the equipment (smoking furnace 10) used in the treatment method of the present invention. As shown in FIG. 1, the treatment method of the present invention is for treating feces 20. The feces 20 to be treated may be those excreted by humans, but usually, those excreted by livestock (livestock feces) are used. Examples of livestock feces include chicken manure, cow manure, pig manure, etc. In large-scale chicken coops and the like, it is not uncommon for more than 100 t of chicken manure (livestock feces) to be generated in a day. Even such a large amount of livestock feces can be significantly reduced in volume by treating them with the method for treating feces of the present invention.

[0021] FIG. 2 is a flowchart for explaining the treatment method of the present invention. As shown in steps S1 to S6 of FIG. 2, the treatment method of the present invention repeatedly performs a drying step (S3). In each drying step (S3), as shown in FIG. 1, the feces 20, which is the object to be treated, is dried to obtain dried feces by exposing it to the smoke 40 (smoky fumes) generated when the fuel 30 is burned. By this drying step (S3), the feces 20 can be reduced in volume to a certain extent. Also, by exposing the feces 20 to the smoky fumes 40 in this drying step (S3), the bad odor of the feces 20 can be reduced. The feces 20 are treated in batch units, and different batches of feces 20 are dried in different drying steps (S3).

[0022] Thus, in the processing method of the present invention, the drying step (S3) of exposing the manure 20 to the fumes 40 is repeatedly performed, and as the fuel 30 used in one drying step (S3), the manure 20 (dried manure) dried in another drying step (S3) performed before the one drying step (S3) is used. In other words, as the fuel 30 used in the n-th drying step (S3) (n is an arbitrary integer of 2 or more), the manure 20 (dried manure) dried in the n'-th drying step (S3) (n' is an arbitrary integer of 1 or more and n-1 or less) is used.

[0023] Even the manure 20 can be burned if it is dried and its moisture content is reduced. The moisture content (weight percentage. The same shall apply hereinafter) of the manure 20 (dried manure) used as the fuel 30 is preferably 30% or less. The moisture content of the manure 20 (dried manure) is more preferably 20% or less, even more preferably 15% or less, and most preferably 10% or less. Thereby, it becomes easier to burn the manure 20 (dried manure). Considering only the combustibility as the fuel 30, the lower the moisture content of the manure 20 (dried manure), the more preferable. However, for that purpose, it is necessary to perform the above drying step (S3) for a long time, and the processing efficiency decreases. Therefore, even if the moisture content of the manure 20 (dried manure) is too low (for example, even if it is reduced to 1% or less), little merit can be obtained.

[0024] In this regard, when alcohol (alcohol aqueous solution) is added to the manure 20 (dried manure) used as the fuel 30, even if the moisture content of the manure 20 (dried manure) is relatively high, the fuel 30 burns well. In addition, the firepower when the fuel 30 burns can be strengthened, and it is also possible to shorten the time for performing the drying step (S3). As the alcohol aqueous solution added to the manure 20 (dried manure), an alcohol concentration of around 50% (about 40 to 60%) can be preferably used.

[0025] Thus, in the processing method of the present invention, since the manure 20 (dried manure) dried in the previous drying step (S3) is used as the fuel 30, the fuel cost can be suppressed. Further, when the manure 20 (dried manure) is burned, only the incineration ash remains as a solid matter. Therefore, the manure 20 (dried manure) can also be significantly reduced in volume. In the processing method of the present invention, it is also possible to reduce the volume of the manure 20 (dried manure) to about 1 / 10. The used fuel 30 (incineration ash remaining after burning the fuel 30) can also be reused as fertilizer.

[0026] The manure 20 (dried manure) used as the fuel 30 in the n-th drying step (S3) may be the manure 20 (dried manure) dried in the previous drying step (S3), and may be the manure 20 (dried manure) dried in the drying step (S3) two or more times before. However, in the present embodiment, as shown in FIG. 2, the manure 20 (dried manure) dried in the immediately previous (n-1)-th drying step (S3) is used as the manure 20 (dried manure) used as the fuel 30 in the n-th drying step (S3).

[0027] This makes it possible to efficiently perform the operation when switching the drying step (S3) each time. That is, in the present embodiment, as shown in FIG. 1, the drying step (S3) is performed using a smoking furnace 10 having a combustion chamber 11 for accommodating the fuel 30 and a smoking chamber 12 for accommodating the manure 20 to be dried. When the manure 20 (dried manure) dried in the immediately previous (n-1)-th drying step (S3) is used as the manure 20 (dried manure) used as the fuel 30 in the n-th drying step (S3), when the (n-1)-th drying step (S3) is completed, the dried manure 20 (dried manure) in the smoking chamber 12 can be directly transferred to the lower combustion chamber 11, and the fuel 30 to be used in the next (n-th) drying step (S3) can be set in the combustion chamber 11.

[0028] However, it is not always possible to charge all of the manure 20 (dried manure) dried in the (n - 1)-th drying step (S3) into the combustion chamber 11 at once. In such a case, the manure 20 (dried manure) dried in the (n - 1)-th drying step (S3) is charged into the combustion chamber 11 in small portions. When the fuel 30 already charged into the combustion chamber 11 has finished burning or is about to finish burning, the remaining manure 20 (dried manure) may be added as fuel 30. As a result, even when it is not possible to charge all of the manure 20 (dried manure) dried in the (n - 1)-th drying step (S3) into the combustion chamber 11, it becomes possible to burn all of it as fuel 30. In other words, the amount of manure 20 (dried manure) dried in the (n - 1)-th drying step (S3) can be made to match the amount of manure 20 (dried manure) used as fuel 30 in the n-th drying step (S3). The number of charging times in each drying step (S3) is not particularly limited, but it is usually preferably set to about 2 to 10 times, more preferably about 3 to 5 times.

[0029] The amount of manure 20 to be dried in each drying step (S3) is not particularly limited. However, if the amount of manure 20 to be dried in each drying step (S3) is too small, the number of times the drying step (S3) needs to be performed will increase, and there is a risk that the processing of the manure 20 will not be completed in time. For this reason, the amount of manure 20 to be dried in each drying step (S3) is preferably 0.5 m 3 or more. The amount of manure 20 to be dried in each drying step (S3) is more preferably 1 m 3 or more, and even more preferably 1.5 m 3 .

[0030] However, if the amount of manure 20 to be dried in each drying step (S3) is too large, the equipment (the above-mentioned smoking furnace 10) for performing the drying step (S3) needs to be enlarged. In addition, even if the smoking furnace 10 can be enlarged, it becomes difficult to expose the entire manure 20 placed therein to the smoke 40. For this reason, the amount of manure 20 to be dried in each drying step (S3) is preferably 10 m 3 or less. The amount of manure 20 to be dried in each drying step (S3) is preferably 5 m 3More preferably, it is set to 3m 3 Even more preferably, it is set as follows. In the present embodiment, about 1.7m 3 of manure 20 is dried for each drying step (S3).

[0031] The time for performing each drying step (S3) is appropriately set according to the amount of manure 20 to be dried (the amount of manure 20 put into the smoking chamber 12), etc. In this regard, in the present embodiment, as described above, for each drying step (S3), about 1.7m 3 of manure 20 is dried. For that amount of manure 20, the drying step (S3) is performed over a total of about 1.5 to 6 hours. Specifically, in the present embodiment, in each drying step (S3), the fuel 30 is put in in 3 to 4 portions, and for each input of the fuel 30, the drying step (S3) is performed for about 0.5 to 1.5 hours (more specifically, around 1 hour). The total time for drying the manure 20 in each drying step (S3) is preferably 2 to 5 hours, and more preferably 3 to 4 hours.

[0032] By the way, when performing the first drying step (S3), the drying step (S3) has not been performed before that. Therefore, only when performing the first drying step (S3), combustibles other than dried manure (for example, wood, etc.) are used as the fuel 30.

[0033] The equipment for performing the drying step (S3) is not particularly limited as long as it can expose the manure 20 to the smoke 40. In the present embodiment, as already described, the drying step (S3) is performed using the smoking furnace 10 shown in FIG. 1. This smoking furnace 10 is provided with a combustion chamber 11 at the lower inner part of a box-shaped housing, and a smoking chamber 12 is provided at the upper inner part (above the combustion chamber 11) of the box-shaped housing. Thereby, the manure 20 can be exposed to the smoke 40 that has climbed from the combustion chamber 11 to the smoking chamber 12.

[0034] The smoke 40 that has risen inside the smoking furnace 10 may be discharged as it is from the upper part of the smoking furnace 10. However, in this embodiment, the upper part of the smoking furnace 10 and the soil are connected by a pipe 13 (chimney), and the smoke 40 is discharged into the soil. This makes it possible to prevent smoke damage by preventing the smoke 40 from being discharged around the smoking furnace 10.

[0035] When all of the manure 20 to be processed on that day has been subjected to the drying process (S3) (the number of times of the drying process (S3) reaches the target number (referred to as N)), the treatment method of the present invention is completed (shifts from step S4 to step S6 in FIG. 2). The manure 20 (dried manure) dried in the last (Nth) drying process (S3) of the day can be used as fuel 30 in the first (first) drying process (S3) of the next day.

[0036] The treatment method of the present invention can be implemented in a very simple process as shown in the above flow chart (FIG. 2) using very simple equipment like the above-mentioned smoking furnace 10 (FIG. 1). For this reason, the treatment cost of the manure 20 can be suppressed.

[0037] Incidentally, in the smoking furnace 10, only one smoking chamber 12 may be provided. However, in this case, it becomes difficult to dry a large amount of manure 20 at once in each drying process (S3). For this reason, it is preferable to provide a plurality of smoking chambers 12 for one smoking furnace 10. Thereby, the amount of manure 20 that can be dried at once in each drying process (S3) can be increased. In this embodiment, as shown in FIG. 1, three smoking chambers 12 are arranged vertically, but the number of smoking chambers 12 can also be four or five. The bottom of each smoking chamber 12 is provided with a shelf board 14. These shelf boards 14 are formed of a plate material or a surface material having an opening, such as a wire mesh, so as not to impede the flow of the smoke 40.

[0038] The manure 20 may be directly placed on the shelf board 14 of each smoking chamber 12. However, in this case, not only does it become difficult to put the manure 20 into the smoking chamber 12, but it also becomes difficult to take out the dried manure 20 (dried manure) from the smoking chamber 12. Also, as described above, since the shelf board 14 is provided with an opening for passing the smoke 40, there is a possibility that the manure 20 placed on the shelf board 14 may fall downward through the opening. Therefore, in the present embodiment, the manure 20 is placed on the shelf board 14 in a state of being put into the tray 15.

[0039] The amount of manure 20 put into each tray 15 varies depending on the size of the smoking furnace 10 and is not particularly limited. However, if the amount of manure 20 put into the tray 15 is too small (the thickness of the manure 20 spread on the tray 15 is too small), the drying efficiency of the manure 20 decreases. Therefore, it is preferable to spread the manure 20 with a thickness of 1 cm or more on each tray 15. The thickness of the manure 20 spread on the tray 15 is preferably 2 cm or more, and more preferably 3 cm or more.

[0040] However, if the amount of manure 20 put into the tray 15 is too large (the thickness of the manure 20 spread on the tray 15 is too large), the manure 20 in the middle part is less likely to be exposed to the smoke 40. Therefore, it is not good to make the thickness of the manure 20 spread on the tray 15 too large. The thickness of the manure 20 spread on the tray 15 is preferably 10 cm or less. The thickness of the manure 20 spread on the tray 15 is more preferably 7 cm or less, and even more preferably 6 cm or less. The thickness of the manure 20 is optimally set in the range of 4 - 5 cm.

[0041] The manure 20 may be put into the tray 15 alone. However, in this case, there is a possibility that the bad smell of the manure 20 during the drying process (S3) may leak outside the smoking furnace 10. Therefore, in the present embodiment, as shown in FIG. 1, the drying process (S3) is performed with the deodorizing powder 50 added to the manure 20 to be the object of the drying process (S3).

[0042] For the deodorizing powder 50, various substances having a deodorizing effect on the feces 20 can be used. Examples of the deodorizing powder 50 include rice bran, leaf mold, carbides (such as charcoal and wood charcoal), and large sawdust. Among them, rice bran and leaf mold can be preferably used as the deodorizing powder 50 because they exhibit an excellent deodorizing effect on the feces 20 such as chicken manure. Also in this embodiment, rice bran is used as the deodorizing powder 50.

[0043] In this way, by using rice bran as the deodorizing powder 50, it becomes possible to dispose of a large amount of rice husks generated in the rice production area. Also, since rice bran can be obtained at a low cost, it is also possible to suppress the acquisition cost of the deodorizing powder 50. In addition, after performing the treatment method of the present invention using the rice bran sent from the rice production area, the dried feces 20 after being burned as the fuel 30 by the treatment method can be sent back to the above-mentioned rice production area as fertilizer for rice cultivation, thereby constructing a transportation cycle of materials.

[0044] The deodorizing powder 50 may be uniformly mixed with the feces 20 that is the deodorizing target, but it is preferable to spread it over the entire upper surface of the feces 20 so that the feces 20 placed in the tray 15 is not exposed. Thereby, it is possible to further prevent the bad odor of the feces 20 from leaking out. The thickness of spreading the deodorizing powder 50 is not particularly limited, but it is preferably 1 cm or more, more preferably 1.5 cm or more, and even more preferably 2 cm or more. However, if the deodorizing powder 50 is made too thick, only the bulk density of the deodorizing powder 50 increases. For this reason, the thickness of spreading the deodorizing powder 50 is at most 5 to 10 cm.

[0045] A moisture absorbent can also be added to the deodorizing powder 50 described above. This can suppress the fermentation of the deodorizing powder 50 (such as rice bran), and it becomes possible to suppress the generation of fermentation odor over a long period of time. The type of the moisture absorbent is not particularly limited, but porous minerals such as perlite, zeolite, and vermiculite can be preferably used. In the treatment method of the present embodiment, perlite is added as a moisture absorbent to the deodorizing powder 50. Perlite is suitable as a moisture absorbent used in the treatment method of the present invention because it can efficiently absorb moisture while having excellent drainage.

[0046] The mixing ratio of the moisture absorbent to the main material of the deodorizing powder 50 such as rice bran is not particularly limited. However, if the mixing ratio of the moisture absorbent is too low, it becomes difficult to suppress the fermentation of the deodorizing powder 50. In this regard, actually, a plurality of types (a plurality of types with different mixing ratios) of samples in which porous minerals (moisture absorbents) such as perlite and zeolite are mixed with rice bran etc. (deodorizing powder 50) were prepared, and an experiment was conducted in which each sample was laid on chicken manure and the process was observed. As a result, when 25 parts by weight of the porous mineral (moisture absorbent) was added to 100 parts by weight of rice bran etc. (deodorizing powder 50), a fermentation suppressing effect at a practical level was confirmed.

[0047] From this, it is considered preferable to add the porous mineral (moisture absorbent) at a ratio of 20 parts by weight or more with respect to 100 parts by weight of rice bran etc. (the main material of the deodorizing powder 50). The mixing ratio of the porous mineral (moisture absorbent) to rice bran etc. (the main material of the deodorizing powder 50) is more preferably 50 parts by weight or more, and even more preferably 70 parts by weight or more with respect to 100 parts by weight of rice bran etc. (the main material of the deodorizing powder 50). There is no particular upper limit to the mixing ratio of the porous mineral (moisture absorbent), but even if the mixing ratio of the porous mineral (moisture absorbent) is increased too much, only the bulk increases, and not much merit is obtained in terms of fermentation suppression. Also, in the above experiment, it has been confirmed that when 100 parts by weight of the porous mineral (moisture absorbent) is added to 100 parts by weight of rice bran etc. (the main material of the deodorizing powder 50), there is no offensive fermentation odor even after a long period of time. For this reason, the porous mineral (moisture absorbent) may be mixed in an amount of 100 parts by weight with respect to 100 parts by weight of rice bran etc. (the main material of the deodorizing powder 50), and there is not much merit in increasing it further.

[0048] The treatment method of the present invention described above can significantly reduce the volume of feces 20 while suppressing the bad odor of feces 20. Therefore, the generation of waste can also be minimized. In addition, the incineration ash of feces 20 (dry feces) finally obtained by implementing the treatment method of the present invention can also be used as fertilizer. As already described, even if a large amount of fertilizer is produced, it is difficult to sell it out. However, through the treatment method of the present invention, since the volume of feces 20 is significantly reduced, an appropriate amount of fertilizer that can be sold out can be produced. Furthermore, the treatment method of the present invention does not require a complex plant and can also treat a large amount of feces in a short time.

Explanation of Signs

[0049] 10 Smoking furnace 11 Combustion chamber 12 Smoking chamber 13 Pipe 14 Shelf board 15 Tray 20 Feces 30 Fuel 40 Smoke 50 Deodorizing powder

Claims

1. Repeatedly performing a drying process of drying feces, which is an object to be processed, by exposing it to the smoke generated when fuel is burned to obtain dried feces, and using, as the fuel used in one drying process, a fuel obtained by adding alcohol to the dried feces obtained in another drying process performed before the one drying process. A method for treating feces, characterized by the above.

2. The method for treating feces according to Claim 1, wherein in each drying process, the moisture content of the dried feces is reduced to 30% or less.

3. The method for treating feces according to Claim 1 or 2, wherein the feces during the drying process are covered with a deodorizing powder.

4. The method for treating feces according to Claim 3, wherein rice bran is used as the deodorizing powder.

5. The method for treating feces according to Claim 3 or 4, wherein a deodorizing powder added with a moisture absorbent is used.

6. The method for treating feces according to any one of Claims 1 to 5, wherein the used fuel generated in each drying process is used as a fertilizer.

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