JPH11300323A - Treatment of organic waste - Google Patents
Treatment of organic wasteInfo
- Publication number
- JPH11300323A JPH11300323A JP11258398A JP11258398A JPH11300323A JP H11300323 A JPH11300323 A JP H11300323A JP 11258398 A JP11258398 A JP 11258398A JP 11258398 A JP11258398 A JP 11258398A JP H11300323 A JPH11300323 A JP H11300323A
- Authority
- JP
- Japan
- Prior art keywords
- organic waste
- rough
- waste
- fermentation
- anaerobic fermentation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、生ごみや食品廃棄
物などの有機性廃棄物の処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating organic waste such as garbage and food waste.
【０００２】[0002]
【従来の技術】従来より有機性廃棄物の再資源化が図ら
れており、たとえば特開平９−２０１６９９号には、し
尿、浄化槽汚泥、下水汚泥、農集汚泥、家畜ふん尿、生
ごみ、食品廃棄物など、性状や濃度が異なる有機性廃棄
物を同一システムにおいて処理して有用物質を回収し、
資源化する方法が開示されている。2. Description of the Related Art Conventionally, organic waste has been recycled. For example, Japanese Patent Application Laid-Open No. Hei 9-201699 discloses that human waste, septic tank sludge, sewage sludge, agricultural sludge, livestock manure, garbage and foods are disclosed. Organic waste with different properties and concentrations, such as waste, is treated in the same system to collect useful substances,
A method for recycling is disclosed.
【０００３】この方法は、図４に示したようなものであ
り、し尿、浄化槽汚泥、農集汚泥、下水汚泥、家畜ふん
尿を除渣工程＃３１において除渣し、固液分離工程＃３
２において液状廃棄物３１と脱水汚泥３２とに分離し、
液状廃棄物３１は、生物処理工程＃３３でＢＯＤ分解並
びに必要に応じて脱窒素し、固液分離工程＃３４で浮遊
物を除去し、高度処理工程＃３５でＣＯＤや色素成分や
鉄・マンガンなどの重金属類を除去し、消毒して放流水
または再利用水としている。This method is as shown in FIG. 4. In this method, human waste, septic tank sludge, agricultural sludge, sewage sludge, and livestock manure are removed in a removing step # 31, and a solid-liquid separation step # 3 is performed.
In 2, the liquid waste 31 and the dewatered sludge 32 are separated,
The liquid waste 31 is subjected to BOD decomposition and denitrification as necessary in the biological treatment step # 33, and suspended matter is removed in the solid-liquid separation step # 34. COD, pigment components, iron and manganese are removed in the advanced treatment step # 35. Heavy metals such as are removed and disinfected for effluent or reused water.
【０００４】一方、生ごみや食品廃棄物は、破砕・分別
工程＃３６において破砕し、プラスチック袋やトレーな
どを分別した後に、上記した脱水汚泥３２と混合して、
嫌気性発酵工程＃３７において発酵させ、発生したメタ
ンガス３３を回収して、発電工程＃３８などにより電気
や熱の形態として使用に供するとともに、消化汚泥３４
を脱水工程＃３９で脱水汚泥３５とし、コンポスト化工
程＃４０などに送って肥料や固形燃料や乾燥汚泥として
回収しており、脱水濾液３６は生物処理工程＃３３へ送
って処理している。On the other hand, garbage and food waste are crushed in a crushing / separating step # 36, plastic bags and trays are separated, and then mixed with the above-mentioned dewatered sludge 32.
The fermentation is performed in the anaerobic fermentation step # 37, the generated methane gas 33 is collected, and used in the form of electricity or heat in the power generation step # 38 or the like.
Is converted into a dewatered sludge 35 in a dehydration step # 39, sent to a composting step # 40 and the like to be collected as fertilizer, solid fuel and dried sludge, and the dehydrated filtrate 36 is sent to a biological treatment step # 33 for processing.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記し
た従来の方法では、嫌気性発酵工程＃３７が律速工程と
なっていて、処理量の増大が困難であるという問題があ
った。However, the conventional method described above has a problem that the anaerobic fermentation step # 37 is a rate-limiting step, and it is difficult to increase the throughput.
【０００６】本発明は上記問題を解決するもので、嫌気
性発酵を促進することができ、処理量を増大できる有機
性廃棄物の処理方法を提供することを目的とするもので
ある。An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a method for treating organic waste, which can promote anaerobic fermentation and can increase the amount of treatment.
【０００７】[0007]
【課題を解決するための手段】上記問題を解決するため
に、本発明の有機性廃棄物の処理方法は、生ごみや食品
廃棄物などの有機性廃棄物を嫌気性条件下でメタン発酵
させてメタンガスを回収する嫌気性発酵工程を有した処
理系において、前記有機性廃棄物を脱水し、微細な破砕
排出孔を形成した圧縮破砕機で高圧にて細粒子状に圧縮
破砕した後に、嫌気性発酵工程に供給するようにしたも
のである。In order to solve the above problems, an organic waste treatment method of the present invention comprises subjecting organic waste such as garbage and food waste to methane fermentation under anaerobic conditions. In a treatment system having an anaerobic fermentation step of recovering methane gas, the organic waste is dewatered and crushed into fine particles at high pressure by a compression crusher having a fine crushing discharge hole, followed by anaerobic treatment. This is supplied to the sexual fermentation process.
【０００８】また本発明の有機性廃棄物の処理方法は、
有機性廃棄物を、脱水に先立って、粗破砕機で粗破砕す
るようにしたものである。上記した構成によれば、生ご
みや食品廃棄物などの有機性廃棄物は、脱水されること
で減容され、空隙率が減って見かけ比重が大きくなる。[0008] The method for treating organic waste according to the present invention comprises:
The organic waste is roughly crushed by a coarse crusher prior to dehydration. According to the above configuration, organic waste such as food waste and food waste is reduced in volume by being dehydrated, the porosity is reduced, and the apparent specific gravity is increased.
【０００９】そしてそれにより、一定容量の処理室を有
した圧縮破砕機において、実質投入量が大きくなって処
理量が増大するとともに、圧縮率が大きくなって、細粒
子化並びに細胞膜の破壊率が高まり、従来は排除せざる
をえなかった破砕困難な有機性廃棄物も細粒子化され
る。またその際、生ごみや食品廃棄物に随伴するプラス
チック類や、金属類、石・砂などの発酵不適物は、破砕
排出孔を通過せず残留することで自動的に同時に分別さ
れる。Accordingly, in a compression crusher having a processing chamber with a fixed capacity, the substantial input amount is increased and the processing amount is increased, and the compression ratio is increased, so that the fine particles and the destruction rate of the cell membrane are reduced. In addition, organic wastes that are difficult to crush, which had to be eliminated before, are also reduced to fine particles. At that time, plastics, metals, stones, sands and other unsuitable fermentation accompanying food waste and food waste are automatically separated at the same time by remaining without passing through the crushing discharge holes.
【００１０】その結果、生物分解性が非常に大きくなっ
て嫌気性発酵工程での発酵効率が高くなり、また従来は
排除されていた有機性廃棄物も嫌気性発酵工程に供給さ
れるため、有機成分の回収率が高くなる。[0010] As a result, the biodegradability becomes very large, and the fermentation efficiency in the anaerobic fermentation step is increased. In addition, organic wastes which have been conventionally excluded are also supplied to the anaerobic fermentation step, so that the organic wastes can be removed. The component recovery rate is high.
【００１１】脱水に先立って有機性廃棄物を粗破砕すれ
ば、見かけ比重がさらに大きくなり、圧縮破砕処理量が
さらに増大する。If the organic waste is roughly crushed prior to dehydration, the apparent specific gravity is further increased, and the compression crushing throughput is further increased.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施形態を図面を
参照しながら説明する。図１において、し尿、浄化槽汚
泥、下水汚泥、農集汚泥、家畜ふん尿などのスラリー状
の有機性廃棄物は、除渣工程＃１において、含まれるし
渣の大きさに応じた適当なスクリーンで除渣する。この
除渣工程＃１は後段の脱水機等の保護のために行うもの
で、必要のない場合は省略可能である。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, organic waste in the form of slurry, such as night soil, septic tank sludge, sewage sludge, agricultural sludge, livestock manure, etc., is subjected to an appropriate screen according to the size of the sediment contained in the sediment removal step # 1. Remove the residue. This residue removal step # 1 is performed for protection of a dehydrator and the like at a later stage, and can be omitted when unnecessary.
【００１３】除渣した有機性廃棄物１を固液分離工程＃
２に導き、性状によっては有機高分子凝集剤２を添加し
て固液分離し、脱水汚泥３と分離液４とする。この固液
分離工程＃２は、所望の汚泥含水率に応じて、遠心脱水
機、ベルトプレス型脱水機、フィルタープレス、回転円
盤型脱水機等の脱水機、あるいは濃縮スクリーンや重力
濃縮槽などによって行うもので、必要のない場合は省略
可能である。[0013] Solid-liquid separation step #
2, and depending on the properties, an organic polymer flocculant 2 is added to perform solid-liquid separation to obtain a dehydrated sludge 3 and a separated liquid 4. The solid-liquid separation step # 2 is performed by a dehydrator such as a centrifugal dehydrator, a belt press type dehydrator, a filter press, a rotating disk type dehydrator, or a concentration screen or a gravity concentration tank according to a desired sludge moisture content. It can be omitted if it is not necessary.
【００１４】分離液４（あるいは液状の有機性廃棄物
１’）を生物処理工程＃３へ導入して、ＢＯＤ分解およ
び必要に応じて脱窒素し、生物処理水５は図示を省略し
た後段の処理に導き、発生した余剰汚泥５ａは固液分離
工程＃２へ返送する。The separation liquid 4 (or the liquid organic waste 1 ') is introduced into the biological treatment step # 3 to decompose the BOD and denitrify as necessary. The excess sludge 5a generated by the treatment is returned to the solid-liquid separation step # 2.
【００１５】一方、生ごみ、食品廃棄物など、プラスチ
ック類などの発酵不適物を含んでいたり、不均質な固形
分を含んでいたりする、その他の有機性廃棄物は、し
尿、浄化槽汚泥などから分離されたし渣６とともに、粗
破砕工程＃４において粗破砕機で粗破砕する。[0015] On the other hand, other organic wastes containing unsuitable fermentation products such as plastics such as garbage and food waste, and containing heterogeneous solids, include human waste and septic tank sludge. In the coarse crushing step # 4 together with the separated residue 6, the material is coarsely crushed by a coarse crusher.
【００１６】粗破砕機はたとえば図２に示したような一
軸破砕機であり、ホッパ１０１に投入されてプッシャ１
０２または同様の目的で設けられた埋込装置により送り
出された破砕対象物を、固定刃１０３と、ロータ１０４
に取り付けた破砕刃１０５とによって破砕し、ロータ１
０４の下方に配置したスクリーン１０６（径２０〜１０
０ｍｍのパンチングメタルなど）で選別し、排出コンベ
ア１０７で排出するように構成されている。The coarse crusher is, for example, a single-shaft crusher as shown in FIG.
02 or a crushing object sent out by an embedding device provided for the same purpose, the fixed blade 103 and the rotor 104
Crushed by the crushing blade 105 attached to the
Screen 106 (diameter of 20 to 10)
(E.g., a punching metal of 0 mm), and discharge by a discharge conveyor 107.
【００１７】このため、生ごみ、食品廃棄物、プラスチ
ック類などの発酵不適物は、ビニール袋等に入ったまま
投入された場合も、プッシャ１０２（または埋込装置）
と破砕刃１０５との組み合わせによって、効率よく破袋
され、粒径２０〜１００ｍｍ以下に粗破砕される。Therefore, unsuitable fermentation products such as garbage, food waste, plastics, etc., are put into the pusher 102 (or the embedding device) even when put in a plastic bag or the like.
By the combination of the crushing blade 105 and the crushing blade 105, the bag is efficiently ruptured and roughly crushed to a particle size of 20 to 100 mm or less.
【００１８】次に、このようにして粗破砕されたことで
空隙率が減り、見かけ比重が大きくなった粗破砕物７
を、脱水工程＃５において、遠心脱水機、ベルトプレス
型脱水機、フィルタープレス、回転円盤型脱水機等の脱
水機により脱水して、脱水物８と分離液９とする。そし
て、脱水されたことで減容され、さらに空隙率が減って
見かけ比重が大きくなった脱水物８を、圧縮破砕工程＃
６において圧縮破砕機で高圧にて圧縮破砕する。Next, as a result of the coarse crushing performed in this manner, the porosity is reduced, and the coarse crushed material 7 whose apparent specific gravity is increased.
Is dehydrated by a dehydrator such as a centrifugal dehydrator, a belt press type dehydrator, a filter press, and a rotating disk type dehydrator in a dehydration step # 5 to obtain a dehydrated product 8 and a separated liquid 9. Then, the dehydrated material 8 whose volume is reduced by being dehydrated and whose porosity is further reduced and whose apparent specific gravity is increased is subjected to a compression crushing step #
In step 6, compression crushing is performed at a high pressure with a compression crusher.
【００１９】圧縮破砕機はたとえば図３に示したような
ものであり、投入口１１１より投入されフィーダー１１
２によってチャンバー１１３の内部へ送り出された破砕
対象物を、性状によっては万遍なく圧力がかかるように
希釈水で調整したうえで、油圧シリンダー１１４により
瞬間的に負荷する２００〜２５０ｋｇ／ｃｍ2 の高圧に
て圧縮し、メッシュ状に形成された微細な破砕排出孔
（図示せず）より押し出すことで細粒子状（破砕対象物
の性状によりペースト状あるいはフレークス状となる）
に破砕して、破砕物排出口１１５を通じて排出し、残留
物は別途に残留物排出口１１６より取り出すように構成
されている。The compression crusher is, for example, as shown in FIG.
The crushed object sent out to the inside of the chamber 113 by 2 is adjusted with diluting water so that pressure is applied evenly depending on the property, and then the hydraulic cylinder 114 is used to instantaneously load 200 to 250 kg / cm 2 . Compressed at high pressure and extruded from fine crushing discharge holes (not shown) formed in a mesh shape to form fine particles (paste or flakes depending on the properties of the object to be crushed)
The crushed material is discharged through a crushed material discharge port 115, and the residue is separately taken out from the residue discharge port 116.
【００２０】このため、脱水物８は、粒径１〜２ｍｍ以
下の細粒子状物１０となって排出され、破砕不能なし
渣、プラスチック類、金属類、石・砂などの発酵不適物
１１は残留することで自動的に分別される。For this reason, the dehydrated product 8 is discharged as fine particulate matter 10 having a particle size of 1 to 2 mm or less, and unfermentable substances 11 such as non-crushable residue, plastics, metals, stones and sands are removed. It is automatically separated by remaining.
【００２１】その際、脱水物８は、上記したように粗破
砕と脱水とによって空隙率が減り、見かけ比重が大きく
なっているため、チャンバー１１３における実質投入量
が大きくなって処理量が増大するとともに、圧縮率が大
きくなって、細粒子化並びに細胞膜の破壊率が高まり、
また従来は排除せざるをえなかった破砕困難な有機性廃
棄物も細粒子化される。また、分別された発酵不適物１
１は通常は含水率１０〜２０％となっていて、有機性廃
棄物の付着量は非常に少なく、搬出等の操作も容易であ
る。At this time, as described above, the porosity of the dehydrated product 8 is reduced by coarse crushing and dehydration, and the apparent specific gravity is increased. At the same time, the compressibility increases, the rate of finer particles and the destruction of cell membranes increase,
In addition, organic waste which is difficult to be crushed, which had to be eliminated conventionally, is also reduced to fine particles. In addition, the separated fermentation unsuitable materials 1
No. 1 usually has a water content of 10 to 20%, has a very small amount of organic waste attached, and is easy to carry out.
【００２２】次に、このようにして圧縮破砕された細粒
子状物１０を、混合槽において上記した脱水汚泥３と混
合し、分離液９と、必要に応じて生物処理水５などを加
えて濃度調整したうえで、嫌気性発酵工程＃７において
嫌気性発酵させ、発生したメタンガス１２や発酵汚泥１
３は従来と同様にして回収する。Next, the fine particulate matter 10 thus compressed and crushed is mixed with the above-mentioned dewatered sludge 3 in a mixing tank, and the separated liquid 9 and, if necessary, biologically treated water 5 and the like are added. After the concentration was adjusted, anaerobic fermentation was performed in anaerobic fermentation step # 7, and the generated methane gas 12 and fermented sludge 1
3 is collected in the same manner as in the prior art.
【００２３】その際、嫌気性発酵工程＃７では、細粒子
状物１０が、上記したように細粒子化されるとともに細
胞膜が破壊されているために、生物分解性が非常に大き
く、また生ごみ、食品廃棄物と、し渣６，脱水汚泥３と
が有する互いに異質の成分、たとえば微量元素（Ｆｅ，
Ｎｉ，Ｃｏ等）が混合されることによる効果もあって、
従来より短い日数で効率よく発酵する。また、従来は排
除されていた有機性廃棄物や、発酵不適物１１に付着し
て排除されていた有機性廃棄物も細粒子状物１０の中に
含まれているために、有機成分の回収率は９５％以上に
もなる。At this time, in the anaerobic fermentation step # 7, the fine particulate matter 10 is extremely biodegradable because the fine particulate matter 10 is finely divided and the cell membrane is destroyed as described above. Dissimilar components of garbage, food waste, sewage residue 6, and dehydrated sludge 3, such as trace elements (Fe,
Ni, Co, etc.).
Efficient fermentation in shorter days than before. In addition, since the organic waste which has been conventionally removed and the organic waste which has been removed by being attached to the unsuitable fermentation substance 11 are also contained in the fine particulate matter 10, the organic component is recovered. The rate can be as high as 95% or more.
【００２４】このように、粗破砕工程＃４と脱水工程＃
５と圧縮破砕工程＃６とにおいて有機性廃棄物を前処理
するようにしたことにより、嫌気性発酵工程＃７におけ
る発酵を促進することができ、処理量を増大できる。し
かし、生ごみ、食品廃棄物の性状によっては粗破砕工程
＃４を省略することも可能である。Thus, the coarse crushing step # 4 and the dewatering step #
By pretreating the organic waste in Step 5 and the compression crushing step # 6, the fermentation in the anaerobic fermentation step # 7 can be promoted, and the throughput can be increased. However, depending on the properties of the garbage and food waste, the coarse crushing step # 4 can be omitted.
【００２５】嫌気性発酵工程＃７では、発酵槽内のメタ
ン菌の濃度を高めることで発酵をより促進することがで
き、たとえば、発酵汚泥１３の一部を脱水機や槽内外に
配置した濾過膜などにより濃縮し、発酵槽内へ返送（残
留）することによって、従来はＨＲＴ１５日以上として
設計していた発酵槽をＨＲＴ１０日以下の小さなものに
することも可能である。In the anaerobic fermentation step # 7, the fermentation can be further promoted by increasing the concentration of methane bacteria in the fermentation tank. By concentrating with a membrane or the like and returning (remaining) in the fermentation tank, the fermentation tank, which was conventionally designed to have an HRT of 15 days or more, can be reduced to a HRT of 10 days or less.
【００２６】嫌気性発酵工程＃７に投入する有機性廃棄
物は、発酵槽内で流動性を保てる濃度であればよく、発
酵槽内の加温（保温）のためのエネルギー消費量を考慮
すると、ＴＳ濃度１０〜１５％に調整するのが有利な場
合がある。The organic waste to be fed into the anaerobic fermentation step # 7 only needs to have a concentration capable of maintaining fluidity in the fermenter, and considering the energy consumption for heating (keeping heat) in the fermenter. , It may be advantageous to adjust the TS concentration to 10 to 15%.
【００２７】この点において、脱水汚泥３を圧縮破砕工
程＃６へ導入するようにしてもよいし、下水汚泥、農集
汚泥が脱水ケーキとして搬入された場合には、固液分離
工程＃２を経由することなく、圧縮破砕工程＃６あるい
は嫌気性発酵工程＃７へ導入するようにしてもよい。有
機性廃棄物１を固液分離工程＃２でＴＳ濃度３〜７％ま
で濃縮するようにすれば、嫌気性発酵工程＃７での濃度
調整の点で効率的な場合もある。At this point, the dewatered sludge 3 may be introduced into the compression crushing step # 6, or if the sewage sludge or agricultural sludge is carried in as a dewatered cake, the solid-liquid separation step # 2 may be performed. Instead of passing through, it may be introduced into the compression crushing step # 6 or the anaerobic fermentation step # 7. If the organic waste 1 is concentrated to a TS concentration of 3 to 7% in the solid-liquid separation step # 2, it may be efficient in terms of concentration adjustment in the anaerobic fermentation step # 7.
【００２８】また、脱水汚泥３を液状化、低分子量化す
る可溶化処理を行うことで発酵を促進することもでき、
それにより細粒子状物１０の発酵も促進できる。可溶化
処理としては、約７０〜８０℃で３日間維持する；７０
℃，０．３ＭＰａ程度の高温高圧に維持する；苛性ソー
ダや消石灰等のアルカリを添加して７０℃程度に維持す
る；オゾンガスを吹き込む；１３０〜１７５℃に維持す
るなどの種々の手法が挙げられる。Further, fermentation can be promoted by performing a solubilization treatment for liquefying and reducing the molecular weight of the dewatered sludge 3,
Thereby, fermentation of the fine particulate matter 10 can be promoted. The solubilization treatment is carried out at about 70-80 ° C. for 3 days;
Various methods such as maintaining at about 70 ° C. by adding alkali such as caustic soda or slaked lime; blowing ozone gas; maintaining at 130 to 175 ° C.
【００２９】上記においては、し尿等を処理するための
生物処理工程と、生ごみ等を処理するための嫌気性発酵
工程とを並列に配した処理系について説明したが、嫌気
性発酵工程を有したその他の処理系であっても、同様に
して処理量や発酵効率の増大を図ることができる。In the above, a treatment system in which a biological treatment process for treating human waste and the like and an anaerobic fermentation process for treating garbage and the like are described in parallel has been described. Even with other treatment systems, the throughput and fermentation efficiency can be similarly increased.
【００３０】[0030]
【発明の効果】以上のように、本発明によれば、生ごみ
や食品廃棄物などの有機性廃棄物を脱水した後に圧縮破
砕機で圧縮破砕することにより、圧縮破砕機における破
砕処理量を増大できるとともに、発酵槽における発酵効
率および有機成分の回収率を高めることができる。ま
た、圧縮破砕の際に、有機性廃棄物に随伴するプラスチ
ック類、並びに金属類や石・砂などの発酵不適物を自動
的に同時にかつ付着物がほとんどない状態で分別するこ
とができ、これによっても発酵効率および有機成分の回
収率を高めることができる。これらの結果、処理系全体
における処理量の増大や発酵槽のコンパクト化を図るこ
とができ、分別した発酵不適物の処分も容易である。As described above, according to the present invention, the organic waste such as garbage and food waste is dewatered and then compressed and crushed by the compression crusher to reduce the amount of crushing in the compression crusher. The fermentation efficiency can be increased, and the fermentation efficiency and the recovery rate of organic components in the fermenter can be increased. In addition, at the time of compression crushing, plastics accompanying organic waste and unsuitable fermentation materials such as metals and stones and sands can be automatically separated at the same time with little deposits. Thereby, the fermentation efficiency and the recovery rate of organic components can be increased. As a result, it is possible to increase the throughput of the entire processing system and to downsize the fermenter, and it is easy to dispose of the separated fermentation unsuitable.
【００３１】また、脱水に先立って有機性廃棄物を粗破
砕することにより、圧縮破砕機における破砕処理量をさ
らに増大することができる。Further, by roughly crushing organic waste prior to dehydration, the amount of crushing treatment in the compression crusher can be further increased.
【図１】本発明の一実施形態における有機性廃棄物の処
理方法を説明するフローチャートである。FIG. 1 is a flowchart illustrating a method for treating organic waste according to an embodiment of the present invention.
【図２】図１に示した有機性廃棄物の処理方法で使用さ
れる粗破砕機の概略構成を示した説明図である。FIG. 2 is an explanatory diagram showing a schematic configuration of a coarse crusher used in the organic waste treatment method shown in FIG.
【図３】図１に示した有機性廃棄物の処理方法で使用さ
れる圧縮破砕機の概略構成を示した説明図である。FIG. 3 is an explanatory diagram showing a schematic configuration of a compression crusher used in the method for treating organic waste shown in FIG.
【図４】従来の有機性廃棄物の処理フローを示したフロ
ーチャートである。FIG. 4 is a flowchart showing a conventional organic waste treatment flow.
７ 粗破砕物 ８ 脱水物 10 細粒子状物 7 Coarse crushed material 8 Dehydrated material 10 Fine particulate matter
───────────────────────────────────────────────────── フロントページの続き (72)発明者 柴田 敏行 大阪府大阪市浪速区敷津東一丁目２番47号 株式会社クボタ内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiyuki Shibata 2-47 Shishitsu Higashi, Naniwa-ku, Osaka-shi, Osaka Kubota Corporation
Claims (2)
を嫌気性条件下でメタン発酵させてメタンガスを回収す
る嫌気性発酵工程を有した処理系において、前記有機性
廃棄物は、脱水し、微細な破砕排出孔を形成した圧縮破
砕機で高圧にて細粒子状に圧縮破砕した後に、嫌気性発
酵工程に供給することを特徴とする有機性廃棄物の処理
方法。1. A treatment system having an anaerobic fermentation step of recovering methane gas by subjecting organic waste such as garbage and food waste to methane fermentation under anaerobic conditions, wherein the organic waste is dehydrated. A method for treating organic waste, comprising compressing and crushing into fine particles at a high pressure with a compression crusher having fine crushing discharge holes, and then supplying it to an anaerobic fermentation step.
砕機で粗破砕することを特徴とする請求項１記載の有機
性廃棄物の処理方法。2. The method for treating organic waste according to claim 1, wherein the organic waste is roughly crushed by a coarse crusher prior to dehydration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11258398A JPH11300323A (en) | 1998-04-23 | 1998-04-23 | Treatment of organic waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11258398A JPH11300323A (en) | 1998-04-23 | 1998-04-23 | Treatment of organic waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11300323A true JPH11300323A (en) | 1999-11-02 |
Family
ID=14590368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11258398A Pending JPH11300323A (en) | 1998-04-23 | 1998-04-23 | Treatment of organic waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11300323A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11300311A (en) * | 1998-04-23 | 1999-11-02 | Kubota Corp | Treatment of organic waste |
| JP2000015229A (en) * | 1998-07-06 | 2000-01-18 | Kubota Corp | Method for treating organic waste |
| EP1488855A1 (en) * | 2003-06-18 | 2004-12-22 | Elektrotechnik Reiter | Process and plant for producing biogas from biological waste |
| JP2006314908A (en) * | 2005-05-12 | 2006-11-24 | Mitsubishi Heavy Ind Ltd | Organic waste water treatment method and system |
| JP2008086843A (en) * | 2006-09-29 | 2008-04-17 | Sumitomo Osaka Cement Co Ltd | Combustible waste-treating device, cement-calcining device, and combustible waste-treating method |
| JP2009528393A (en) * | 2005-02-01 | 2009-08-06 | ベルナー，ハンス | Production of biomass fuel |
| CN102219333A (en) * | 2011-02-23 | 2011-10-19 | 青岛天人环境股份有限公司 | Treatment method of manure waste generated in process of soaking manure in water in breeding farm |
| CN102583930A (en) * | 2012-03-17 | 2012-07-18 | 山东民和生物科技有限公司 | Livestock excrement biogas generation method and livestock excrement biogas generation system |
| CN102603134A (en) * | 2012-03-16 | 2012-07-25 | 山东民和生物科技有限公司 | Two-stage sand removal process for livestock manure |
| JP2017100130A (en) * | 2011-04-26 | 2017-06-08 | 水ｉｎｇ株式会社 | Anaerobic digestion treatment method and anaerobic digestion treatment device |
| WO2020255439A1 (en) | 2019-06-17 | 2020-12-24 | 株式会社太洋サービス | Method and system for storing biomass raw material |
-
1998
- 1998-04-23 JP JP11258398A patent/JPH11300323A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11300311A (en) * | 1998-04-23 | 1999-11-02 | Kubota Corp | Treatment of organic waste |
| JP2000015229A (en) * | 1998-07-06 | 2000-01-18 | Kubota Corp | Method for treating organic waste |
| EP1488855A1 (en) * | 2003-06-18 | 2004-12-22 | Elektrotechnik Reiter | Process and plant for producing biogas from biological waste |
| JP2009528393A (en) * | 2005-02-01 | 2009-08-06 | ベルナー，ハンス | Production of biomass fuel |
| JP2006314908A (en) * | 2005-05-12 | 2006-11-24 | Mitsubishi Heavy Ind Ltd | Organic waste water treatment method and system |
| JP2008086843A (en) * | 2006-09-29 | 2008-04-17 | Sumitomo Osaka Cement Co Ltd | Combustible waste-treating device, cement-calcining device, and combustible waste-treating method |
| CN102219333A (en) * | 2011-02-23 | 2011-10-19 | 青岛天人环境股份有限公司 | Treatment method of manure waste generated in process of soaking manure in water in breeding farm |
| JP2017100130A (en) * | 2011-04-26 | 2017-06-08 | 水ｉｎｇ株式会社 | Anaerobic digestion treatment method and anaerobic digestion treatment device |
| CN102603134A (en) * | 2012-03-16 | 2012-07-25 | 山东民和生物科技有限公司 | Two-stage sand removal process for livestock manure |
| CN102583930A (en) * | 2012-03-17 | 2012-07-18 | 山东民和生物科技有限公司 | Livestock excrement biogas generation method and livestock excrement biogas generation system |
| WO2020255439A1 (en) | 2019-06-17 | 2020-12-24 | 株式会社太洋サービス | Method and system for storing biomass raw material |
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