WO2015005070A1 - Method for methane fermentation, straw material, and litter - Google Patents
Method for methane fermentation, straw material, and litter Download PDFInfo
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- WO2015005070A1 WO2015005070A1 PCT/JP2014/065968 JP2014065968W WO2015005070A1 WO 2015005070 A1 WO2015005070 A1 WO 2015005070A1 JP 2014065968 W JP2014065968 W JP 2014065968W WO 2015005070 A1 WO2015005070 A1 WO 2015005070A1
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- Prior art keywords
- methane fermentation
- fermentation
- methane
- crushed
- solid
- Prior art date
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 238000000855 fermentation Methods 0.000 title claims abstract description 77
- 230000004151 fermentation Effects 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000010902 straw Substances 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 title abstract description 13
- 230000001079 digestive effect Effects 0.000 claims abstract description 13
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims abstract description 12
- 239000012634 fragment Substances 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 26
- 238000000926 separation method Methods 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 11
- 239000004071 soot Substances 0.000 claims description 8
- 239000007791 liquid phase Substances 0.000 claims description 5
- 239000007790 solid phase Substances 0.000 claims description 5
- 239000010815 organic waste Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 10
- 241000283690 Bos taurus Species 0.000 description 4
- 241000209140 Triticum Species 0.000 description 4
- 235000021307 Triticum Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 210000003608 fece Anatomy 0.000 description 4
- 240000007594 Oryza sativa Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010871 livestock manure Substances 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000972773 Aulopiformes Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000283086 Equidae Species 0.000 description 1
- 240000009088 Fragaria x ananassa Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241001024304 Mino Species 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 235000019515 salmon Nutrition 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 235000021012 strawberries Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
- A01K1/0152—Litter
- A01K1/0155—Litter comprising organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/20—Capture or disposal of greenhouse gases of methane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/22—Methane [CH4], e.g. from rice paddies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Definitions
- the present invention relates to a methane fermentation method, a straw material and a litter, and more particularly, to a methane fermentation method excellent in the possibility of resource reuse, and a straw material and a litter that prevent corruption.
- Patent Documents 1 and 2 Conventionally, in order to obtain biogas by fermenting koji, it was necessary to pulverize to micron order (Patent Documents 1 and 2).
- ⁇ is used as a bedding to be laid in the breeding space for livestock.
- ⁇ is a material that is relatively difficult to rot, but, for example, if it contains water, it will rot and will be unsanitary.
- the present inventor has examined the use of a koji that has been previously fermented from the viewpoint of improving the spoilage resistance of the koji used as a bedding.
- the fermented rice cake is more difficult to rot, so it is hygienic when it is used as a bedding.
- the present inventor has eagerly studied and studied in detail in the process leading to the invention described above, and thus has reached a further invention.
- cocoon fragments are 10 mm to 100 mm in size, a sufficient amount of biogas can be recovered by fermentation, and can be easily recovered from the digested liquid after the fermentation treatment, and is also suitably used as the above-mentioned bedding. It was found that the possibility of resource reuse was excellent.
- an object of the present invention is to provide a methane fermentation method, a sanitary dredging material and a bedding which are excellent in the possibility of resource reuse.
- Methane characterized in that cocoons crushed into 10 to 100 mm pieces are methane-fermented in a fermentation liquid to collect biogas, and the cocoons after fermentation are recovered from the digestive juice and used as a bedding. Fermentation method.
- the raw material containing the soot and organic waste is subjected to solid-liquid separation, and the soot collected in the solid phase after solid-liquid separation is crushed into 10 mm to 100 mm fragments and then mixed with the liquid phase after solid-liquid separation.
- the methane fermentation method according to any one of 1 to 3, wherein the methane fermentation is performed.
- Block diagram showing an example of a methane fermentation method according to the present invention Explanatory drawing showing the basic configuration of the rotary crusher The figure explaining an Example The figure which shows the result of the example
- the methane fermentation method according to the present invention performs methane fermentation of koji crushed into pieces of 10 mm to 100 mm.
- a dried stalk of a gramineous plant such as rice or wheat can be preferably used.
- the straw material according to the present invention is obtained by subjecting straw crushed into 10 mm to 100 mm pieces to methane fermentation.
- Such a straw is hygienic and has an excellent possibility of being reused as a resource.
- the litter according to the present invention is made of the above-mentioned cocoons, it is less susceptible to spoilage, and when used in a breeding space for livestock or the like, the effect of easily maintaining hygiene can be obtained.
- the use of the wood material according to the present invention is not limited to bedding.
- bedding For example, clay walls with roofs, roofs, straw bales (straw bales architecture), straw bales, construction materials such as tatami mats, clothing materials such as grass straws, strawberries (Mino), straw hats, etc. It can be preferably used as container materials such as straws, ropes, dolls (scarecrows, etc.) or straw semi-paper raw materials, ash ash raw materials, etc.
- FIG. 1 is a block diagram showing an example of a methane fermentation method according to the present invention.
- 1 is a solid-liquid separation process
- 2 is a crushing process
- 3 is a mixing adjustment process
- 4 is a methane fermentation process
- 5 is a dehydration process.
- soot as a raw material by mixing it with organic waste, for example.
- organic waste is not particularly limited, but preferred examples include animal manure (livestock manure) such as cows, pigs and horses, and garbage.
- the raw material is subjected to the solid-liquid separation step 1 and is solid-liquid separated into a solid phase containing at least soot and a liquid phase.
- the solid-liquid separation means is not particularly limited.
- belt press dehydrator screw press dehydrator, filter press dehydrator, belt press dehydrator, centrifugal dehydrator, multiple disk dehydrator, roller press dehydrator, wave press dehydrator A machine or the like can be preferably used.
- the solid phase after solid-liquid separation is subjected to crushing step 2.
- the liquid phase after solid-liquid separation is supplied to the mixing adjustment step 3.
- the wrinkles contained in the raw material are crushed into 10 mm to 100 mm pieces, preferably 10 mm to 80 mm pieces, more preferably 10 mm to 50 mm pieces.
- the crushing means is not particularly limited, and for example, a cutting machine or a rotary crusher described in detail later can be preferably used.
- the raw material after the crushing process is supplied to the mixing adjustment step 3.
- mixing adjustment step 3 the liquid phase after solid-liquid separation described above and the raw material after crushing are mixed.
- the mixing ratio may be adjusted as necessary.
- the raw material mixed as described above is subjected to methane fermentation using a methane fermentation tank.
- the straw material according to the present invention is produced in the digestive liquid (fermented liquid) by methane fermentation.
- the straw material preferably retains the shape before methane fermentation to some extent, and is preferably a 10 mm to 100 mm fragment, preferably a 10 mm to 80 mm fragment, more preferably a 10 mm to 50 mm fragment.
- the temperature of methane fermentation is not particularly limited.
- any type such as a so-called medium temperature type, high temperature type, and ultra high temperature type can be applied.
- fermentation is performed at a temperature of 50 ° C. or more. It is preferable. This makes it possible to sterilize miscellaneous bacteria and the like, so that the effect of further improving the hygiene of straw can be obtained.
- the upper limit of fermentation temperature is not specifically limited, It is preferable that it is 70 degrees C or less.
- methane fermentation is continued for preferably 5 days or longer, more preferably 10 days or longer, and most preferably 15 days or longer.
- the methane fermentation may be a batch type or a continuous type. When the methane fermentation is performed continuously, the average residence time in the fermenter corresponds to the duration of the methane fermentation.
- biogas generated with methane fermentation it is also preferable to recover biogas generated with methane fermentation. According to the present invention, it is possible to generate a sufficient amount of biogas by using cocoons crushed into fragments of 10 mm to 100 mm.
- the collected biogas for example, is temporarily stored in a gas holder as necessary, and then purified by a purification facility, and used as power for a generator. It is also preferable to use the electric power obtained in this way for electric power sales.
- the fermented digestive juice contains the firewood according to the present invention, and in the dehydration step 5, the dehydrated firewood is recovered from the digested liquid.
- the dehydrating means is not particularly limited, and for example, those described above as the solid-liquid separating means can be used.
- the digested liquid separated (dehydrated) from the straw is, for example, stored in the digested liquid storage tank, and then partially supplied to the mixing and adjusting step 3 and mixed with the raw material.
- the digestive juice can be preferably used as a fertilizer such as liquid fertilizer.
- the digestive juice can be added to feed or the like.
- FIG. 2 is an explanatory diagram showing the basic configuration of the rotary crusher.
- 20 is a rotary crusher
- 21 is a chamber
- 22 is a rotating shaft
- 23 is a rotating element
- 24 is a mounting portion
- 25 is a motor.
- the rotary crusher 20 has a rotating shaft 22 provided in the vicinity of the center of the bottom in a chamber 21 having an internal space, and a rotating element 23 formed of a chain here is attached to a mounting portion 24 formed at the tip of the rotating shaft 22. Is attached.
- the object to be processed (the solid phase separated in the above-described solid-liquid separation step 1 and including at least soot) is introduced into the chamber 21, it rotates and collides with the rotating element 23 on which centrifugal force is acting. To do. As a result, the straw is crushed and fragmented.
- Rotating element 23 is not limited to a chain, and may be a chain or a blade.
- the radius of rotation of the rotating element 23 (the length from the center of rotation to the outer peripheral end) is not particularly limited, but is preferably in the range of 50 cm to 200 cm.
- the rotational speed of the rotating shaft is set to 800 to 1600 rpm, and the processing time is set to 25 to 40 seconds (total of charging time 10 seconds, crushing time 5 seconds to 20 seconds, and discharging time 10 seconds). It becomes possible to suitably produce cocoons crushed into 10 mm to 100 mm pieces, preferably 10 mm to 80 mm pieces, more preferably 10 mm to 50 mm pieces.
- a crushed crushed piece of 10 mm to 100 mm is, in other words, a crushed piece obtained by crushing using a rotary crusher under the above operating conditions. Can do.
- the present invention is not limited to this, and at least 10 mm to 100 mm pieces. It is sufficient that the crushed rice cake is subjected to methane fermentation.
- methane fermentation can be carried out by appropriately adding an additive to the kneaded crushed pieces of 10 to 100 mm.
- a fragment of 10 mm to 100 mm refers to a piece whose longitudinal length falls within the range of 10 mm to 100 mm.
- the cocoon satisfying at least the above conditions is subjected to methane fermentation.
- the mixing ratio of “a bag that does not satisfy the above condition (less than 10 mm or more than 100 mm)” is preferably 5 wt. Part or less, more preferably 3 parts by weight or less, and most preferably 1 part by weight or less.
- cocoon piece 1 A piece of wheat straw cut into 100 mm length with scissors was designated as cocoon piece 1 (FIG. 3).
- FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
- FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
- FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
- FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
- Test 5 methane fermentation was carried out in the same manner as in Test 1 except that the koji fragment 1 was not used and only the digested liquid was used.
- FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Housing For Livestock And Birds (AREA)
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Abstract
The present invention addresses the problem of providing: a methane fermentation method which is excellent in terms of the possibility of resource recycling; and a hygienic straw material and litter. The problem is solved by: a method for methane fermentation which is characterized by subjecting straws that have been cut into sizes of 10-100 mm to methane fermentation in a fermentation broth and recovering a biogas and by recovering the fermented straws from the digestive juice to utilize the recovered straws as litter; and litter characterized by having been recovered from the digestive juice by the methane fermentation method. It is preferable that the problem be solved by conducting the methane fermentation at a temperature not lower than 50ºC.
Description
本発明は、メタン発酵方法、藁材及び敷料に関し、詳しくは、資源再利用の可能性に優れるメタン発酵方法、腐敗が防止された藁材及び敷料に関する。
The present invention relates to a methane fermentation method, a straw material and a litter, and more particularly, to a methane fermentation method excellent in the possibility of resource reuse, and a straw material and a litter that prevent corruption.
従来、藁を発酵させてバイオガスを得るためには、ミクロンオーダーまで粉砕する必要があるとされていた(特許文献1、2)。
Conventionally, in order to obtain biogas by fermenting koji, it was necessary to pulverize to micron order (Patent Documents 1 and 2).
家畜等の飼育スペースに敷かれる敷料として、藁が用いられている。
藁 is used as a bedding to be laid in the breeding space for livestock.
藁は、比較的腐敗しにくい材質であるが、例えば、水を含んだりすると少なからず腐敗が生じ、不衛生である。
藁 is a material that is relatively difficult to rot, but, for example, if it contains water, it will rot and will be unsanitary.
本発明者は、敷料として用いられる藁の耐腐敗性を向上する観点で、あらかじめ発酵処理された藁を用いることを検討した。
The present inventor has examined the use of a koji that has been previously fermented from the viewpoint of improving the spoilage resistance of the koji used as a bedding.
発酵処理を施すことによって、藁に含まれる比較的腐敗し易い部分は分解される。
部分 By applying the fermentation treatment, the relatively perishable part contained in the cocoon is decomposed.
発酵処理後の藁は、それ以上腐敗し難いものとなるから、これを敷料として用いる場合は、衛生的である。
藁 The fermented rice cake is more difficult to rot, so it is hygienic when it is used as a bedding.
本発明者は、以上に説明した発明に至る過程において、鋭意検討し、詳細に研究したが故に、更なる発明に至った。
The present inventor has eagerly studied and studied in detail in the process leading to the invention described above, and thus has reached a further invention.
上述した通り、従来、藁を発酵させてバイオガスを得るためには、ミクロンオーダーまで粉砕する必要があるとされていたが、本発明者が、実際に、10mm~100mmのサイズの藁の断片を発酵処理したところ、発酵処理の開始直後はバイオガス発生の立ち上がりが多少出遅れる場合があるものの、発酵を継続してみると、意外なことに十分な量のバイオガスを回収できることがわかった。
As described above, in order to ferment koji to obtain biogas, it has been conventionally necessary to pulverize to micron order. However, the present inventor actually kneaded koji fragments with a size of 10 mm to 100 mm. As a result of fermentation treatment, it was found that a sufficient amount of biogas could be recovered unexpectedly when fermentation was continued, although the start of biogas generation may be delayed somewhat immediately after the start of fermentation treatment.
ミクロンオーダーまで粉砕した藁を発酵処理した場合、発酵処理後の藁は、微細すぎるため、消化液中からの回収が大変であるし、回収後においても、廃棄するか、あるいはコンポスト化する等の用途にしか用いられず、上述した敷料として利用できなかった。
When fermenting the koji crushed to micron order, the koji after the fermentation process is too fine, so it is difficult to recover it from the digestive juice. Even after recovery, it can be discarded or composted. It was used only for purposes and could not be used as the above-mentioned bedding.
10mm~100mmのサイズの藁の断片であれば、発酵により十分な量のバイオガスが回収可能であると共に、発酵処理後において、消化液中から容易に回収でき、上述した敷料としても好適に用いることができ、資源再利用の可能性に優れることがわかった。
If the cocoon fragments are 10 mm to 100 mm in size, a sufficient amount of biogas can be recovered by fermentation, and can be easily recovered from the digested liquid after the fermentation treatment, and is also suitably used as the above-mentioned bedding. It was found that the possibility of resource reuse was excellent.
そこで、本発明の課題は、資源再利用の可能性に優れるメタン発酵方法、衛生的な藁材及び敷料を提供することにある。
Therefore, an object of the present invention is to provide a methane fermentation method, a sanitary dredging material and a bedding which are excellent in the possibility of resource reuse.
また本発明の他の課題は、以下の記載によって明らかとなる。
Further, other problems of the present invention will become apparent from the following description.
上記課題は、以下の各発明によって解決される。
The above problems are solved by the following inventions.
1. 10mm~100mmの断片に破砕された藁を、発酵液中でメタン発酵し、バイオガスを回収すると共に、発酵後の前記藁を消化液中から回収して敷料として利用することを特徴とするメタン発酵方法。
1. Methane characterized in that cocoons crushed into 10 to 100 mm pieces are methane-fermented in a fermentation liquid to collect biogas, and the cocoons after fermentation are recovered from the digestive juice and used as a bedding. Fermentation method.
2. 前記メタン発酵を、50℃以上の温度で行うことを特徴とする前記1記載のメタン発酵方法。
2. The methane fermentation method as described in 1 above, wherein the methane fermentation is performed at a temperature of 50 ° C or higher.
3. 前記藁は、回転要素としてチェーンを備えた回転式破砕機により破砕されたものであることを特徴とする前記1又は2記載のメタン発酵方法。
3. The methane fermentation method according to 1 or 2 above, wherein the straw is crushed by a rotary crusher having a chain as a rotating element.
4. 藁と有機性廃棄物とを含む原料を固液分離し、該固液分離後の固相に回収した藁を10mm~100mmの断片に破砕した後、該固液分離後の液相と混合して、前記メタン発酵を行うことを特徴とする前記1~3の何れかに記載のメタン発酵方法。
4. The raw material containing the soot and organic waste is subjected to solid-liquid separation, and the soot collected in the solid phase after solid-liquid separation is crushed into 10 mm to 100 mm fragments and then mixed with the liquid phase after solid-liquid separation. The methane fermentation method according to any one of 1 to 3, wherein the methane fermentation is performed.
5. 前記1~4の何れかに記載のメタン発酵方法により前記消化液中から回収されたことを特徴とする敷料。
5. A litter collected from the digestive juice by the methane fermentation method according to any one of 1 to 4 above.
本発明によれば、資源再利用の可能性に優れるメタン発酵方法、衛生的な藁材及び敷料を提供することができる。
According to the present invention, it is possible to provide a methane fermentation method, a sanitary dredging material and a bedding which are excellent in the possibility of resource reuse.
本発明に係るメタン発酵方法は、10mm~100mmの断片に破砕された藁をメタン発酵する。
The methane fermentation method according to the present invention performs methane fermentation of koji crushed into pieces of 10 mm to 100 mm.
これにより、発酵に伴って発生する十分な量のバイオガスを回収することが可能であると共に、発酵処理後の藁(以下、藁材という場合がある。)は、それ以上腐敗しにくいものとなり、衛生的であるため、資源再利用の可能性に優れる効果が奏される。また、この藁材は、比較的サイズが大きいため、消化液中から容易に回収することが可能である。
As a result, it is possible to recover a sufficient amount of biogas generated during fermentation, and the soot after the fermentation process (hereinafter sometimes referred to as “koji”) is more resistant to spoilage. Since it is hygienic, the effect of excellent resource reuse is achieved. Further, since this bran material is relatively large, it can be easily recovered from the digestive juice.
本発明において、藁としては、例えば、稲や小麦などのようなイネ科植物の茎を乾燥させたものを好ましく用いることができる。
In the present invention, as the straw, for example, a dried stalk of a gramineous plant such as rice or wheat can be preferably used.
本発明に係る藁材は、上述したように、10mm~100mmの断片に破砕された藁をメタン発酵してなる。かかる藁材は、衛生的であり、資源としての再利用の可能性に優れる。
As described above, the straw material according to the present invention is obtained by subjecting straw crushed into 10 mm to 100 mm pieces to methane fermentation. Such a straw is hygienic and has an excellent possibility of being reused as a resource.
本発明に係る敷料は、上述した藁材からなるため、それ以上腐敗しにくく、家畜等の飼育スペースに敷いて用いた場合、衛生を保ち易い効果が得られる。
Since the litter according to the present invention is made of the above-mentioned cocoons, it is less susceptible to spoilage, and when used in a breeding space for livestock or the like, the effect of easily maintaining hygiene can be obtained.
本発明に係る藁材の用途は、敷料に限定されるものではない。例えば、藁入り土壁、屋根、わら俵(わら俵建築)、ストローベイル、畳などのような建築材料、草鞋(わらじ)、蓑(みの)、麦わら帽子などのような衣料品材料、俵、藁苞(わらづと)などのような容器材料、縄、人形(案山子(かかし)など)等として、あるいは、わら半紙原料、藁灰原料等として、好ましく用いることができる。
用途 The use of the wood material according to the present invention is not limited to bedding. For example, clay walls with roofs, roofs, straw bales (straw bales architecture), straw bales, construction materials such as tatami mats, clothing materials such as grass straws, strawberries (Mino), straw hats, etc. It can be preferably used as container materials such as straws, ropes, dolls (scarecrows, etc.) or straw semi-paper raw materials, ash ash raw materials, etc.
以下に、図面を参照して本発明を実施するための形態について、より詳しく説明する。
Hereinafter, embodiments for carrying out the present invention will be described in more detail with reference to the drawings.
図1は、本発明に係るメタン発酵方法の一例を示すブロック図である。
FIG. 1 is a block diagram showing an example of a methane fermentation method according to the present invention.
図1において、1は固液分離工程、2は破砕工程、3は混合調整工程、4はメタン発酵工程、5は脱水工程である。
In FIG. 1, 1 is a solid-liquid separation process, 2 is a crushing process, 3 is a mixing adjustment process, 4 is a methane fermentation process, and 5 is a dehydration process.
本発明においては、藁を、例えば有機性廃棄物と混合して原料とすることも好ましい。有機性廃棄物としては、格別限定されるものではないが、牛、豚、馬等のような動物の糞尿(家畜糞尿)や、生ゴミなどを好ましく例示できる。
In the present invention, it is also preferable to use soot as a raw material by mixing it with organic waste, for example. The organic waste is not particularly limited, but preferred examples include animal manure (livestock manure) such as cows, pigs and horses, and garbage.
原料は、固液分離工程1に供され、少なくとも藁を含む固相と、液相とに、固液分離される。
The raw material is subjected to the solid-liquid separation step 1 and is solid-liquid separated into a solid phase containing at least soot and a liquid phase.
固液分離手段は格別限定されず、例えば、ベルトプレス脱水機、スクリュープレス脱水機、フィルタープレス脱水機、ベルトプレス脱水機、遠心脱水機、多重円板脱水機、ローラープレス脱水機、ウェービープレス脱水機等を好ましく用いることができる。
The solid-liquid separation means is not particularly limited. For example, belt press dehydrator, screw press dehydrator, filter press dehydrator, belt press dehydrator, centrifugal dehydrator, multiple disk dehydrator, roller press dehydrator, wave press dehydrator A machine or the like can be preferably used.
固液分離後の固相は、破砕工程2に供される。一方、固液分離後の液相は、混合調整工程3に供される。
The solid phase after solid-liquid separation is subjected to crushing step 2. On the other hand, the liquid phase after solid-liquid separation is supplied to the mixing adjustment step 3.
破砕工程2では、原料に含まれる藁を、10mm~100mmの断片、好ましくは10mm~80mmの断片、より好ましくは10mm~50mmの断片に破砕する。
In the crushing step 2, the wrinkles contained in the raw material are crushed into 10 mm to 100 mm pieces, preferably 10 mm to 80 mm pieces, more preferably 10 mm to 50 mm pieces.
破砕手段は格別限定されず、例えば、裁断機や、後に詳述する回転式破砕機等を好ましく用いることができる。
The crushing means is not particularly limited, and for example, a cutting machine or a rotary crusher described in detail later can be preferably used.
かかる破砕処理後の原料は、混合調整工程3に供される。
The raw material after the crushing process is supplied to the mixing adjustment step 3.
混合調整工程3では、上述した固液分離後の液相と、破砕処理後の原料とを混合する。必要により適宜、混合割合を調整してもよい。
In mixing adjustment step 3, the liquid phase after solid-liquid separation described above and the raw material after crushing are mixed. The mixing ratio may be adjusted as necessary.
メタン発酵工程4では、上記により混合された原料を、メタン発酵槽を用いて、メタン発酵する。
In the methane fermentation step 4, the raw material mixed as described above is subjected to methane fermentation using a methane fermentation tank.
本発明によれば、メタン発酵により、消化液(発酵液)中に、本発明に係る藁材が生成される。藁材は、メタン発酵前の形状をある程度保持していることが好ましく、10mm~100mmの断片、好ましくは10mm~80mmの断片、より好ましくは10mm~50mmの断片であることが好ましい。
According to the present invention, the straw material according to the present invention is produced in the digestive liquid (fermented liquid) by methane fermentation. The straw material preferably retains the shape before methane fermentation to some extent, and is preferably a 10 mm to 100 mm fragment, preferably a 10 mm to 80 mm fragment, more preferably a 10 mm to 50 mm fragment.
メタン発酵の温度は、格別限定されず、例えば、いわゆる中温型、高温型、超高温型など何れのタイプでも適用可能であるが、本発明においては、特に、50℃以上の温度で発酵を行うことが好ましい。これにより、雑菌などを殺菌することが可能になるので、藁材の衛生を更に向上できる効果が得られる。発酵温度の上限は、格別限定されるものではないが、70℃以下であることが好ましい。
The temperature of methane fermentation is not particularly limited. For example, any type such as a so-called medium temperature type, high temperature type, and ultra high temperature type can be applied. In the present invention, fermentation is performed at a temperature of 50 ° C. or more. It is preferable. This makes it possible to sterilize miscellaneous bacteria and the like, so that the effect of further improving the hygiene of straw can be obtained. Although the upper limit of fermentation temperature is not specifically limited, It is preferable that it is 70 degrees C or less.
また、メタン発酵は、好ましくは5日以上、より好ましくは10日以上、最も好ましくは15日以上継続することが好ましい。メタン発酵は、バッチ式でも連続式でもよく、連続式で行う場合は、発酵槽における平均滞留時間が、メタン発酵の継続時間に相当する。
Also, it is preferable that methane fermentation is continued for preferably 5 days or longer, more preferably 10 days or longer, and most preferably 15 days or longer. The methane fermentation may be a batch type or a continuous type. When the methane fermentation is performed continuously, the average residence time in the fermenter corresponds to the duration of the methane fermentation.
本発明においては、メタン発酵に伴って発生するバイオガスを回収することも好ましいことである。本発明によれば、10mm~100mmの断片に破砕された藁により、十分な量のバイオガスを発生させることが可能である。
In the present invention, it is also preferable to recover biogas generated with methane fermentation. According to the present invention, it is possible to generate a sufficient amount of biogas by using cocoons crushed into fragments of 10 mm to 100 mm.
回収したバイオガスは、例えば、必要に応じて一時的にガスホルダに貯留された後、精製設備で精製され、発電機の動力として利用される。このようにして得られた電力を、売電に供することも好ましいことである。
The collected biogas, for example, is temporarily stored in a gas holder as necessary, and then purified by a purification facility, and used as power for a generator. It is also preferable to use the electric power obtained in this way for electric power sales.
発酵後の消化液は、本発明に係る藁材を含んでおり、脱水工程5では、該消化液中から、脱水された藁材が回収される。
The fermented digestive juice contains the firewood according to the present invention, and in the dehydration step 5, the dehydrated firewood is recovered from the digested liquid.
脱水手段は格別限定されず、例えば、固液分離手段として上述したものを用いることができる。
The dehydrating means is not particularly limited, and for example, those described above as the solid-liquid separating means can be used.
藁から分離(脱水)された消化液は、例えば、消化液貯留槽に貯留された後、一部が混合調整工程3に供され、原料と混合される。また、本発明においては、消化液を、液肥などの肥料として好ましく用いることができる。また、消化液は、飼料などに添加して用いることもできる。
The digested liquid separated (dehydrated) from the straw is, for example, stored in the digested liquid storage tank, and then partially supplied to the mixing and adjusting step 3 and mixed with the raw material. In the present invention, the digestive juice can be preferably used as a fertilizer such as liquid fertilizer. In addition, the digestive juice can be added to feed or the like.
次に、破砕工程2の破砕手段として好ましく用いられる回転式破砕機について、詳しく説明する。
Next, the rotary crusher that is preferably used as the crushing means in the crushing step 2 will be described in detail.
図2は、回転式破砕機の基本構成を示す説明図である。
FIG. 2 is an explanatory diagram showing the basic configuration of the rotary crusher.
図2において、20は回転式破砕機、21はチャンバ、22は回転軸、23は回転要素、24は取付部、25はモーターである。
2, 20 is a rotary crusher, 21 is a chamber, 22 is a rotating shaft, 23 is a rotating element, 24 is a mounting portion, and 25 is a motor.
回転式破砕機20は、内部空間を有するチャンバ21内の底部中央近傍に回転軸22が竪設され、該回転軸22の先端に形成された取付部24に、ここでは鎖からなる回転要素23が取り付けられている。
The rotary crusher 20 has a rotating shaft 22 provided in the vicinity of the center of the bottom in a chamber 21 having an internal space, and a rotating element 23 formed of a chain here is attached to a mounting portion 24 formed at the tip of the rotating shaft 22. Is attached.
被処理物(上述した固液分離工程1で分離された固相であり、少なくとも藁を含む)がチャンバ21内に投入されると、回転して遠心力が作用している回転要素23に衝突する。これにより藁は破砕され断片化される。
When the object to be processed (the solid phase separated in the above-described solid-liquid separation step 1 and including at least soot) is introduced into the chamber 21, it rotates and collides with the rotating element 23 on which centrifugal force is acting. To do. As a result, the straw is crushed and fragmented.
運転条件を適宜設定することで、容易に、被処理物として、10mm~100mmの断片に破砕された藁を生成できる。
藁 By appropriately setting the operating conditions, it is possible to easily generate cocoons that are crushed into 10 mm to 100 mm pieces as objects to be processed.
回転要素23は、鎖に限定されず、チェーンであってもよいし、あるいはブレードなどであってもよい。回転要素23の回転半径(回転中心から外周側末端までの長さ)は、格別限定されないが、50cm~200cmの範囲であることが好ましい。
Rotating element 23 is not limited to a chain, and may be a chain or a blade. The radius of rotation of the rotating element 23 (the length from the center of rotation to the outer peripheral end) is not particularly limited, but is preferably in the range of 50 cm to 200 cm.
運転条件の一例として、回転軸の回転数を800~1600rpm、処理時間を25秒~40秒(投入時間10秒、破砕時間5秒~20秒、排出時間10秒の合計)に設定することで、10mm~100mmの断片、好ましくは10mm~80mmの断片、より好ましくは10mm~50mmの断片に破砕された藁を好適に生成することが可能になる。
As an example of operating conditions, the rotational speed of the rotating shaft is set to 800 to 1600 rpm, and the processing time is set to 25 to 40 seconds (total of charging time 10 seconds, crushing time 5 seconds to 20 seconds, and discharging time 10 seconds). It becomes possible to suitably produce cocoons crushed into 10 mm to 100 mm pieces, preferably 10 mm to 80 mm pieces, more preferably 10 mm to 50 mm pieces.
本発明の一つの側面において、「10mm~100mmの断片に破砕された藁」とは、例えば、回転式破砕機を用いて、上記のような運転条件で、破砕処理して得られる藁と換言し得る。
In one aspect of the present invention, “a crushed crushed piece of 10 mm to 100 mm” is, in other words, a crushed piece obtained by crushing using a rotary crusher under the above operating conditions. Can do.
以上の説明では、10mm~100mmの断片に破砕された藁を、牛糞や牛し尿と共にメタン発酵に供する場合について示したが、本発明はこれに限定されるものではなく、少なくとも10mm~100mmの断片に破砕された藁が、メタン発酵に供されればよい。本発明においては、10mm~100mmの断片に破砕された藁に、適宜添加物を添加してメタン発酵を行うことができる。
In the above description, the case where the cocoon crushed into 10 mm to 100 mm pieces is subjected to methane fermentation together with cow dung or cow manure has been shown, but the present invention is not limited to this, and at least 10 mm to 100 mm pieces. It is sufficient that the crushed rice cake is subjected to methane fermentation. In the present invention, methane fermentation can be carried out by appropriately adding an additive to the kneaded crushed pieces of 10 to 100 mm.
本発明において、10mm~100mmの断片とは、長手方向の長さが10mm~100mmの範囲に収まるものを指す。本発明においては、少なくとも上記条件を満たす藁がメタン発酵に供されればよい。本発明の効果をより顕著に奏する観点では、「上記条件を満たす藁」100重量部に対して、「上記条件を満たさない藁(10mm未満又は100mm超)」の混入割合が、好ましくは5重量部以下、より好ましくは3重量部以下、最も好ましくは1重量部以下であることである。「上記条件を満たさない藁」の混入割合が多い場合は、「上記条件を満たす藁」を選別する選別工程を設けて、「上記条件を満たす藁」の割合を向上させることも好ましいことである。ここでは、範囲として10mm~100mmを規定する場合について説明したが、ここでの説明は、他の範囲を規定する場合にも援用される。
In the present invention, a fragment of 10 mm to 100 mm refers to a piece whose longitudinal length falls within the range of 10 mm to 100 mm. In the present invention, it is sufficient that the cocoon satisfying at least the above conditions is subjected to methane fermentation. From the viewpoint of achieving the effects of the present invention more remarkably, the mixing ratio of “a bag that does not satisfy the above condition (less than 10 mm or more than 100 mm)” is preferably 5 wt. Part or less, more preferably 3 parts by weight or less, and most preferably 1 part by weight or less. When the mixing ratio of “soy that does not satisfy the above conditions” is high, it is also preferable to improve the ratio of “soy that satisfies the above conditions” by providing a sorting step for selecting “soys that satisfy the above conditions”. . Here, the case of defining the range of 10 mm to 100 mm has been described, but the description here is also applied to the case of defining another range.
以下に、本発明の実施例について説明するが、本発明はかかる実施例により限定されない。
Hereinafter, examples of the present invention will be described, but the present invention is not limited to the examples.
1.藁断片の製造(破砕処理)
<藁断片1;100mmの断片>
麦藁を、ハサミで100mmの長さに裁断したものを藁断片1(図3)とした。 1. Manufacture of cocoon fragments (crushing treatment)
<Amber fragment 1; 100 mm fragment>
A piece of wheat straw cut into 100 mm length with scissors was designated as cocoon piece 1 (FIG. 3).
<藁断片1;100mmの断片>
麦藁を、ハサミで100mmの長さに裁断したものを藁断片1(図3)とした。 1. Manufacture of cocoon fragments (crushing treatment)
<
A piece of wheat straw cut into 100 mm length with scissors was designated as cocoon piece 1 (FIG. 3).
<藁断片2;50mmの断片>
麦藁を、ハサミで50mmの長さに裁断したものを藁断片2(図3)とした。 <Swarf Fragment 2; 50 mm Fragment>
A piece of wheat straw cut into 50 mm length with scissors was designated as cocoon fragment 2 (FIG. 3).
麦藁を、ハサミで50mmの長さに裁断したものを藁断片2(図3)とした。 <
A piece of wheat straw cut into 50 mm length with scissors was designated as cocoon fragment 2 (FIG. 3).
<藁断片3;1mm超~20mmの断片>
麦藁を、ハサミで裁断した後、家庭用ミキサーにかけて更に破砕し、径1mmの篩にかけ、篩上の断片を藁断片3(図3)とした。 <Bridge piece 3; Fragment of more than 1 mm to 20 mm>
The wheat straw was cut with scissors and then crushed with a household mixer, passed through a sieve having a diameter of 1 mm, and a piece on the sieve was taken as a piece 3 (FIG. 3).
麦藁を、ハサミで裁断した後、家庭用ミキサーにかけて更に破砕し、径1mmの篩にかけ、篩上の断片を藁断片3(図3)とした。 <
The wheat straw was cut with scissors and then crushed with a household mixer, passed through a sieve having a diameter of 1 mm, and a piece on the sieve was taken as a piece 3 (FIG. 3).
<藁断片4;1mm以下の断片>
上記藁断片3の製造において、篩下の断片を藁断片4(図3)とした。 <Fragment 4; Fragment of 1 mm or less>
In the production of thecocoon fragment 3, the sieving fragment was designated as cocoon fragment 4 (FIG. 3).
上記藁断片3の製造において、篩下の断片を藁断片4(図3)とした。 <
In the production of the
2.メタン発酵
<試験1>
10gの藁断片1(100mmの断片)を、消化液(牛糞由来)1.2Lと混合し、55℃、pH制御なし、手動攪拌の条件で、メタン発酵を行った。メタン発酵により生成するバイオガス量の経時変化を図4に示す。 2. Methane fermentation <Test 1>
10 g of salmon fragment 1 (100 mm fragment) was mixed with 1.2 L of digestive juice (derived from cow dung) and subjected to methane fermentation under the conditions of 55 ° C., no pH control and manual stirring. FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
<試験1>
10gの藁断片1(100mmの断片)を、消化液(牛糞由来)1.2Lと混合し、55℃、pH制御なし、手動攪拌の条件で、メタン発酵を行った。メタン発酵により生成するバイオガス量の経時変化を図4に示す。 2. Methane fermentation <
10 g of salmon fragment 1 (100 mm fragment) was mixed with 1.2 L of digestive juice (derived from cow dung) and subjected to methane fermentation under the conditions of 55 ° C., no pH control and manual stirring. FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
<試験2>
試験1において、藁断片1を藁断片2(50mmの断片)に代えたこと以外は、試験1と同様にしてメタン発酵を行った。メタン発酵により生成するバイオガス量の経時変化を図4に示す。 <Test 2>
Methane fermentation was performed in the same manner as inTest 1 except that the cocoon fragment 1 was replaced with the cocoon fragment 2 (50 mm fragment) in Test 1. FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
試験1において、藁断片1を藁断片2(50mmの断片)に代えたこと以外は、試験1と同様にしてメタン発酵を行った。メタン発酵により生成するバイオガス量の経時変化を図4に示す。 <
Methane fermentation was performed in the same manner as in
<試験3>
試験1において、藁断片1を藁断片3(1mm超~20mmの断片)に代えたこと以外は、試験1と同様にしてメタン発酵を行った。メタン発酵により生成するバイオガス量の経時変化を図4に示す。 <Test 3>
Methane fermentation was carried out in the same manner as inTest 1 except that the cocoon fragment 1 was replaced with the cocoon fragment 3 (over 1 mm to 20 mm) in Test 1. FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
試験1において、藁断片1を藁断片3(1mm超~20mmの断片)に代えたこと以外は、試験1と同様にしてメタン発酵を行った。メタン発酵により生成するバイオガス量の経時変化を図4に示す。 <
Methane fermentation was carried out in the same manner as in
<試験4>
試験1において、藁断片1を藁断片4(1mm以下の断片)に代えたこと以外は、試験1と同様にしてメタン発酵を行った。メタン発酵により生成するバイオガス量の経時変化を図4に示す。 <Test 4>
Methane fermentation was carried out in the same manner as inTest 1 except that the cocoon fragment 1 was replaced with the cocoon fragment 4 (fragment of 1 mm or less) in Test 1. FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
試験1において、藁断片1を藁断片4(1mm以下の断片)に代えたこと以外は、試験1と同様にしてメタン発酵を行った。メタン発酵により生成するバイオガス量の経時変化を図4に示す。 <
Methane fermentation was carried out in the same manner as in
<試験5>
試験1において、藁断片1を用いず、消化液のみとしたこと以外は、試験1と同様にしてメタン発酵を行った。メタン発酵により生成するバイオガス量の経時変化を図4に示す。 <Test 5>
InTest 1, methane fermentation was carried out in the same manner as in Test 1 except that the koji fragment 1 was not used and only the digested liquid was used. FIG. 4 shows changes with time in the amount of biogas produced by methane fermentation.
試験1において、藁断片1を用いず、消化液のみとしたこと以外は、試験1と同様にしてメタン発酵を行った。メタン発酵により生成するバイオガス量の経時変化を図4に示す。 <
In
3.評価
図4に示される通り、10mm~50mmのサイズの藁の断片を発酵処理した場合では、発酵処理の開始直後はバイオガス発生の立ち上がりが多少出遅れる場合があるものの、発酵を継続してみると、十分な量のバイオガスを回収できることがわかった。100mmのサイズの藁の断片を発酵処理した場合も、15日経過時で、試験4(1mm以下)のバイオガス発生量にかなり近づいていることがわかった。 3. Evaluation As shown in FIG. 4, in the case where the cocoon fragments having a size of 10 mm to 50 mm are subjected to fermentation treatment, the start of biogas generation may be delayed somewhat immediately after the start of fermentation treatment, but when fermentation is continued, It was found that a sufficient amount of biogas can be recovered. It was also found that when the cocoon fragments having a size of 100 mm were fermented, the amount of biogas generated in Test 4 (1 mm or less) was considerably close after 15 days.
図4に示される通り、10mm~50mmのサイズの藁の断片を発酵処理した場合では、発酵処理の開始直後はバイオガス発生の立ち上がりが多少出遅れる場合があるものの、発酵を継続してみると、十分な量のバイオガスを回収できることがわかった。100mmのサイズの藁の断片を発酵処理した場合も、15日経過時で、試験4(1mm以下)のバイオガス発生量にかなり近づいていることがわかった。 3. Evaluation As shown in FIG. 4, in the case where the cocoon fragments having a size of 10 mm to 50 mm are subjected to fermentation treatment, the start of biogas generation may be delayed somewhat immediately after the start of fermentation treatment, but when fermentation is continued, It was found that a sufficient amount of biogas can be recovered. It was also found that when the cocoon fragments having a size of 100 mm were fermented, the amount of biogas generated in Test 4 (1 mm or less) was considerably close after 15 days.
また、発酵後の藁は、発酵前の形状を実質的に保持していることが確認された。
It was also confirmed that the fermented koji substantially retained the shape before fermentation.
1:固液分離工程
2:破砕工程
20:回転式破砕機
21:チャンバ
22:回転軸
23:回転要素
24:取付部
25:モーター
3:混合調整工程
4:メタン発酵工程
5:脱水工程
1: Solid-liquid separation process 2: Crushing process 20: Rotary crusher 21: Chamber 22: Rotating shaft 23: Rotating element 24: Mounting portion 25: Motor 3: Mixing adjustment process 4: Methane fermentation process 5: Dehydration process
2:破砕工程
20:回転式破砕機
21:チャンバ
22:回転軸
23:回転要素
24:取付部
25:モーター
3:混合調整工程
4:メタン発酵工程
5:脱水工程
1: Solid-liquid separation process 2: Crushing process 20: Rotary crusher 21: Chamber 22: Rotating shaft 23: Rotating element 24: Mounting portion 25: Motor 3: Mixing adjustment process 4: Methane fermentation process 5: Dehydration process
Claims (5)
- 10mm~100mmの断片に破砕された藁を、発酵液中でメタン発酵し、バイオガスを回収すると共に、発酵後の前記藁を消化液中から回収して敷料として利用することを特徴とするメタン発酵方法。 Methane characterized in that cocoons crushed into 10 to 100 mm pieces are methane-fermented in a fermentation liquid to collect biogas, and the cocoons after fermentation are recovered from the digestive juice and used as a bedding. Fermentation method.
- 前記メタン発酵を、50℃以上の温度で行うことを特徴とする請求項1記載のメタン発酵方法。 The methane fermentation method according to claim 1, wherein the methane fermentation is performed at a temperature of 50 ° C or higher.
- 前記藁は、回転要素としてチェーンを備えた回転式破砕機により破砕されたものであることを特徴とする請求項1又は2記載のメタン発酵方法。 The methane fermentation method according to claim 1 or 2, wherein the straw is crushed by a rotary crusher having a chain as a rotating element.
- 藁と有機性廃棄物とを含む原料を固液分離し、該固液分離後の固相に回収した藁を10mm~100mmの断片に破砕した後、該固液分離後の液相と混合して、前記メタン発酵を行うことを特徴とする請求項1~3の何れかに記載のメタン発酵方法。 The raw material containing the soot and organic waste is subjected to solid-liquid separation, and the soot collected in the solid phase after solid-liquid separation is crushed into 10 mm to 100 mm fragments and then mixed with the liquid phase after solid-liquid separation. The methane fermentation method according to any one of claims 1 to 3, wherein the methane fermentation is performed.
- 請求項1~4の何れかに記載のメタン発酵方法により前記消化液中から回収されたことを特徴とする敷料。
A litter collected from the digestive juice by the methane fermentation method according to any one of claims 1 to 4.
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CN108668916A (en) * | 2018-03-31 | 2018-10-19 | 潍坊友容实业有限公司 | One kind is containing extra large asparagus finished cattle fermenting bed padding additive |
CN111903538A (en) * | 2020-08-27 | 2020-11-10 | 内蒙古华蒙科创环保科技工程有限公司 | Straw bed-lying padding suitable for large-scale cattle farm |
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JPH09172895A (en) * | 1995-12-27 | 1997-07-08 | Shihoro Tekko Kk | Regeneration of livestock bedding and apparatus used therefor |
JPH1036185A (en) * | 1996-07-26 | 1998-02-10 | Ootsu Kiko:Kk | Manuring of waste material littered down barn and its apparatus |
JP2007506536A (en) * | 2003-06-27 | 2007-03-22 | バイオ−サーキット エーピーエス | Biogas production facility by anaerobic hydrolysis |
JP2009255056A (en) * | 2008-03-18 | 2009-11-05 | Tomio Nagai | Manufacturing method of methane gas and compost using biomass resources |
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JPS53126757A (en) * | 1977-04-09 | 1978-11-06 | Sanyo Sekki Kk | Method of fermenting organic waste |
JP3385263B2 (en) * | 2000-09-18 | 2003-03-10 | 孝史 藤原 | Livestock barn recycling system |
JP2007074932A (en) * | 2005-09-12 | 2007-03-29 | Sakoda Bio Kenkyusho:Kk | Livestock barn |
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JPH09172895A (en) * | 1995-12-27 | 1997-07-08 | Shihoro Tekko Kk | Regeneration of livestock bedding and apparatus used therefor |
JPH1036185A (en) * | 1996-07-26 | 1998-02-10 | Ootsu Kiko:Kk | Manuring of waste material littered down barn and its apparatus |
JP2007506536A (en) * | 2003-06-27 | 2007-03-22 | バイオ−サーキット エーピーエス | Biogas production facility by anaerobic hydrolysis |
JP2009255056A (en) * | 2008-03-18 | 2009-11-05 | Tomio Nagai | Manufacturing method of methane gas and compost using biomass resources |
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