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JP4324835B2 - Organic waste treatment system - Google Patents
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JP4324835B2 - Organic waste treatment system - Google Patents

Organic waste treatment system Download PDF

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JP4324835B2
JP4324835B2 JP2001166163A JP2001166163A JP4324835B2 JP 4324835 B2 JP4324835 B2 JP 4324835B2 JP 2001166163 A JP2001166163 A JP 2001166163A JP 2001166163 A JP2001166163 A JP 2001166163A JP 4324835 B2 JP4324835 B2 JP 4324835B2
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pallet
kneading
organic waste
mold
conveyor
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JP2002355649A (en
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克己 松葉
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Murata Machinery Ltd
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Murata Machinery Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/40Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

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  • Processing Of Solid Wastes (AREA)
  • Fertilizers (AREA)

Description

【0001】
【発明の利用分野】
この発明は生ゴミ等の有機廃棄物の処理システムに関し、特に有機廃棄物を微生物により消化させて、無臭無害化するようにしたシステムに関する。
【0002】
【従来技術】
生ゴミ等の有機廃棄物を微生物で処理して、堆肥を生産するシステムが知られている。このようなシステムでは、微生物による生ゴミの発酵に長時間が必要なため広い場所を必要とする、発酵時の異臭により立地が制限される等の問題がある。
【0003】
この点に関し出願人は、微生物を含有する処理母材を有機廃棄物と混練するための混練手段と、該混練物を所定期間保管して熟成するための倉庫とを設けて、熟成した混練物を次の有機廃棄物との混練用の処理母材として前記混練手段へ所定量ずつ供給するようにした有機廃棄物処理システムを出願した(特願2001−18547号)。
【0004】
【発明の課題】
この発明の基本的課題は、有機廃棄物を比較的狭いスペースで効率的に処理でき、2次廃棄物の発生が少なく、かつパレット上に混練物をほぼ均一な厚さで盛り付けることのできる有機廃棄物の処理システムを提供することにある。
【0008】
この発明は、微生物を含有する処理母材を有機廃棄物と混練するための混練手段と、該混練物を所定期間保管して熟成するための倉庫とを設けて、熟成した混練物を次の有機廃棄物との混練用の処理母材として前記混練手段へ供給するようにした有機廃棄物処理システムであって、
前記混練手段から混練物を投入するための型枠と、該型枠を反転させて、型枠に応じた形状で混練物をパレット上に盛り付けるための反転手段、とを設けたことを特徴とする。
【0009】
好ましくは、前記反転手段では、パレットを型枠上に載せた状態から、パレット上に型枠が載った状態へと、パレットと型枠とを一体に反転させる。
【0010】
【発明の作用と効果】
この発明では、微生物を含有する処理母材と有機廃棄物とを混練して、パレットに盛り付け、倉庫で保管して熟成する。この間に有機廃棄物は微生物により消化され、熟成した混練物は次の有機廃棄物との混練用の処理母材となる。熟成は倉庫で行えるので、比較的狭いスペースに多量の混練物を保管でき、有機廃棄物は微生物により消化されて次の処理母材となるので、2次廃棄物の発生が少なくなる。倉庫は自動倉庫が好ましいが、これに限るものではない。
【0014】
この発明では、混練物を型枠に投入し、型枠を反転させてパレット上に盛り付ける。混練物は流動性に乏しいので、単純に型枠で上から押し付けても、所望の形状にはなりにくい。そこで型枠に投入し、型枠を反転させると、混練物はバラバラに流動しながら落下して、ほぼ型枠に沿った形でパレット上に盛り付けられる。このため、混練物を型枠に沿った形状でほぼ均一にパレット上に盛り付けることができる。
【0015】
請求項2の発明では、パレットで型枠を蓋した状態から、型枠がパレットに載った状態へと、パレットと型枠を一体に反転させる。このため型枠に可動の底板などを設けて反転時に混練物が落下しないようにする必要がない。
【0016】
【実施例】
図1〜図6に、生ゴミ等の有機廃棄物の処理システムの概要を示す。これらの図において、2は有機廃棄物処理システムで、4はピットで、生ゴミ等の有機廃棄物を、ゴミ収集車や、食品工場、水産加工場、農産物加工場、下水処理場の使用済みの汚泥タンク、製紙工場、等のパイプから投入する。生ゴミの場合は例えば易分解性のプラスチック袋等に詰めてピットに投入し、食品加工屑や水産加工屑などは例えば裸でそのまま投入し、コンベヤ5で破砕機6まで搬送する。破砕機6では、その上部から投入した有機廃棄物(例えば野菜等の生ゴミ)を一対のローラや一対のギヤ等の破砕手段の隙間等に挟み込んで破砕しながら落下させ、落下した有機廃棄物を適宜のケースに受けて、コンベヤ12,13で次の混練・盛付機10,11へと搬送する。なお有機廃棄物を破砕するとかなりの悪臭が生じるので、破砕機6内の空気を土壌脱臭部7等の脱臭手段へと送気して脱臭することが好ましい。
【0017】
混練・盛付機10,11は、破砕された有機廃棄物を処理母材と混練した後、例えば木製のパレット上に例えばほぼ均一な厚さに盛り付ける。使用するパレットは腐敗しにくい樹脂製や鉄製などでもよい。12〜18はコンベヤで、コンベヤ12,13は前記の破砕機6から混練・盛付機10,11まで有機廃棄物を収容したケースを搬送し、コンベヤ14,15はケース自動倉庫42から処理母材を収容したケースを混練・盛付機10,11まで搬送する。コンベヤ16,17は処理母材と生ゴミ等の有機廃棄物との混練物を盛り付けたパレットを、振掛機20,21を介してパレット自動倉庫24まで搬送する。コンベヤ18はケース自動倉庫42内のケースを作業エリア19まで搬送し、作業エリア19では処理母材を収容したケースにおが屑を補充する等の作業を行う。
【0018】
混練・盛付機10,11で、生ゴミ等の有機廃棄物と処理母材とを所定の割合で混合して、パレット上に混練物を例えばほぼ一定の厚さに盛り付ける。振掛機20,21で、混練物の上面を覆うように、処理母材を混練物のほぼ全面にほぼ均一に振り掛ける。振掛機20,21で処理母材を振り掛けたパレットは、コンベヤ16,17で自動倉庫内のステーション31,32まで搬送される。
【0019】
パレット自動倉庫24では、長手方向中央部に設けた走行路25に沿って、パレット搬送用のスタッカークレーン26を走行させ、走行路25の両側に例えば一対のラック28,29を設ける。ラック28,29の棚内に混練物を盛り付けたパレットを載置し、必要に応じて自動倉庫24内の温度や湿度を制御しながら、混練物をパレット上で熟成させる。振掛機20,21から自動倉庫24へパレットを搬送するコンベヤ16,17の先端を自動倉庫24内に配置し、スタッカークレーン26へパレットを移し替えるためのステーション31,32とする。自動倉庫24には他にステーション33があり、ステーション33にはコンベヤを設けて、熟成済みの混練物を載せたパレットをスタッカークレーン26から受け取り、篩・小分け機40へパレットを搬出する。ステーション34は、自動倉庫24で熟成させたコンポストをホッパ35から搬出するためのステーションで、コンベヤを備えている。
【0020】
36,37は空調機器で、スタッカークレーン26の走行路25を空気通路として、自動倉庫24内を空調する。空調には例えば、空調機器36,37から外気を送風して自動倉庫24内を換気する、あるいは自動倉庫24内の空気を除湿する、自動倉庫24内の空気を温度調整する、等のものがある。自動倉庫24で、パレット上に盛り付けた混練物を熟成させるには、温度や湿度の管理が重要で、温度や湿度を処理母材中の微生物が活動し易い条件に保ち、パレット上の混練物を均一にかつ短時間で熟成させる。なお、空調機器を用いることなく、窓の開閉などによって換気可能とし、温度や湿度に応じてその頻度を変更するようにしても良い。
【0021】
篩・小分け機40は、パレット自動倉庫24から熟成済みの混練物を載置したパレットを受け取り、混練物をパレットから分離して篩に掛け、金属やプラスチック等の異物を分離する。異物を分離した混練物を計量器で、次の有機廃棄物の混練用、振り掛け用、コンポスト生産や廃棄などのその他の用途に、所定量ずつ小分けする。ここでの所定量は、各用途毎の所定量で、用途が変わると所定量も変化する。小分けした混練物を適宜のケースに収容して、ケース自動倉庫42に保管する。44はケース自動倉庫42のスタッカークレーンで、45,46は例えば一対のラックで、48は篩・小分け機40とケース自動倉庫42とを接続するステーションで、ケースを搬送するためのコンベヤを備えている。
【0022】
有機廃棄物処理システム2には、これ以外に駐車場や事務室、資材置き場や、生産したコンポスト等を平置きする平置き場50等を設ける。図1に示した有機廃棄物処理システム2では、レイアウト自体は任意であるが、図1のレイアウトは、パレット自動倉庫24を例えば1基設けた、比較的小規模な有機廃棄物処理システムに適している。
【0023】
図2に、混練・盛付機11の構成を示す。以下では説明の便宜上、生ゴミを処理するものとするが、他の有機廃棄物でも同様である。破砕機から、コンベヤ13により、生ゴミ53等を収容した生ゴミケース52が送られてくる。ケース自動倉庫から、コンベヤ15により、処理母材55を収容した処理母材ケース54が送られてくる。生ゴミケース52に対して、投入部60でケース52をチャックして180゜反転させる等のことにより、内部の生ゴミ53を落下させる。粉砕・投入部62でも、同様に処理母材ケース54をチャックして180゜反転させる等により、処理母材55を落下させる。粉砕・投入部62は、籾殻等の粉砕にも利用するので、粉砕用のローラやギヤ等を備えている。この他の点では、粉砕・投入部62は投入部60と同様に構成する。
【0024】
56はパレットで、木製、鉄製、プラスチック製などとするが、底部を簀の子状とする、あるいは底部にメッシュを設ける、などにより通気性を高めたものが好ましい。57は、パレット56上に盛り付けた混練物で、ほぼ均一な厚さとなるように盛り付けて、熟成が同じ速度で均一に進むようにする。
【0025】
生ゴミ53と処理母材55は、混練部64内に投入され、混練部64には例えば3個のスクリューコンベヤ65等を設ける。混練時にはスクリューコンベヤ65で、図2の右側へ生ゴミや処理母材を搬送し、搬送された生ゴミや処理母材は崩落面66まで運ばれて崩れ、この間に混練される。盛付時には、スクリューコンベヤ65を逆方向に回転させて、図2の左側へ混練物を搬送する。搬送された混練物は、混練部64の図2での左側の底部に設けた孔70から落下し、混練物の落下と同期してパレット56を図2の右から左へとコンベヤ17で搬送すると、パレット56上に均一な厚さに混練物を盛り付けることができる。ここでは孔70の配列方向をパレット56の短辺方向、コンベヤ17の搬送方向をパレット56の長辺方向としたが、これらの逆でも良く、孔70の配列方向とコンベヤ17の搬送方向とがほぼ直交していればよい。図2では、複数個の孔70を直線に沿って配置しているが、円弧等の曲線に沿って配置しても良い。
【0026】
68はノズルで、生ゴミの分解を繰り返すうちに、処理母材中の微生物が変質してくるので、処理母材に用いたのと同種の微生物の水溶液を混練時に補給して、微生物の変質を防止すること等に用いる。またパレット56上に盛り付けた混練物57は、水分含有量がほぼ一定であることが好ましく、冬季等の乾燥期にはノズル68から補水してもよい。含水率の制御は大まかで良く、例えば生ゴミの含水率は夏期に95%程度、冬季に70%程度で、混練盛付後や振り掛け後に60〜65%程度が好ましい。また熟成後の含水率は例えば54%程度である。そこで特に水分計などを用いずに、作業者の判断で補水すれば良い。また逆に含水率が高すぎる場合は、脱水や乾燥などの処理を施しても良い。
【0027】
実施例には2台の混練・盛付機10,11を設け、これらの構成は基本的に同じとする。混練・盛付機10でもコンポストの生産を行う場合、どちらの混練・盛付機10,11にも、粉砕・投入部62を設ける。混練・盛付機10ではコンポスト生産を行わない場合、混練・盛付機10には、粉砕機能なしの投入部60を一対設けても良い。なお混練と盛付とを同じ装置で行うための機構は、図2のスクリューコンベヤ65には限らない。例えば、ミキサー内にスクリューや羽を設けて回転させて混練すると共に、ミキサーの底部に開閉自在の孔を設けて、混練時には孔を閉じて混練物を閉じ込め、盛付時には孔を開いて混練物が孔から出て盛り付けられるようにすればよい。
【0028】
図3に振掛機20の構成を示し、他の振掛機21も同じ構成である。コンベヤ16で、混練・盛付機10からパレット自動倉庫24へとパレット56を搬送し、72は処理母材を投入するためのホッパで、その出口には首振り運動をする首振りコンベヤ73が設けられ、ホッパ72から投入された処理母材はコンベヤ73により図3の右側に運ばれ、先端の投下孔74から混練物57上にほぼ均一に振り掛けられる。コンベヤ73が首振り運動するので、処理母材は混練物57の全面をほぼ均一な厚さで被覆するように振り掛けられ、振り掛ける厚さは混練物57の厚さ(例えば40cm厚程度)の例えば1/10程度とする。そしてコンベヤ16によりパレット56が図3の左側へ搬送される間に、混練物57上にほぼ均一に処理母材が振り掛けられる。
【0029】
図4に篩・小分け機40の構成を示すと、ステーション33からコンベヤにより、熟成した混練物57を載せたパレット56が、パレット自動倉庫から搬出されてくる。このパレット56は、反転投入機80内でチャックされて、例えば180゜反転し、これによって混練物57はホッパ82内に落下する。ホッパ82の出口側には振動篩等の篩84を設けて、篩のメッシュを通過できない金属片やプラスチック片等を除いて、ダクト89から異物容器90へと排出する。篩84を通過した混練物はホッパ86から計量器88に入り、次の混練用,次の振掛用,コンポスト生産用等の単位に小分けされ、処理母材ケース54に小分けされ、ステーション48のコンベヤによりケース自動倉庫42に入庫して、保管される。なお混練用、振掛用、コンポスト生産用は、処理母材の量がそれぞれ異なり、計量器88で各々の用途に応じた量を計量して小分けする。
【0030】
図5に実施例での有機廃棄物の処理工程を示す。ピットから投入された生ゴミ等の有機廃棄物は破砕機で破砕され、生じた悪臭は土壌脱臭部等で処理される。破砕された有機廃棄物は混練・盛付機へ搬送され、ケース自動倉庫からは混練用の分量に計量された処理母材がコンベヤを通して搬送され、破砕済みの有機廃棄物と混練される。この時、微生物の変質を補うために、必要に応じて微生物溶液からなる活性液が添加され、乾燥期には補水する。
【0031】
混練・盛付機では、1台の混練装置を用いてスクリューコンベヤの回転方向を反転させることにより、最初に混練を行い、次にパレットへの盛付を行う。そしてパレットをコンベヤで搬送しながら混練・盛付機で盛り付けると、ほぼ均一な厚さに自動的に盛り付けることができる。混練物を盛り付けたパレットはコンベヤで振掛機の下部を通過し、その表面にほぼ均一に処理母材を振り掛ける。振掛に用いる処理母材も、ケース単位でケース自動倉庫に保管され、振掛機へとコンベヤで搬送されて振り掛けられる。
【0032】
処理母材を振り掛けたパレットは、コンベヤによりパレット自動倉庫へ入庫され、自動的にラック内の所定の棚に載置されて保管される。具体的な例を示すと、パレット1枚当たりの有機廃棄物の量は例えば150kg程度で、含水率は冬季には70%程度、夏期には95%程度である。混練機で添加する処理母材は、熟成済みの混練物が主体で、例えばその体積は1000リットル程度である。処理母材が不足する場合は、おが屑や稲藁、麦藁、籾殻、バーク(木材の皮)などで増量しても良い。また有機廃棄物と処理母材との混練の割合は、有機廃棄物1kg当たり、処理母材が3〜20リットル程度が好ましい。混練物の含水率は約60〜65%程度で、冬季には補水して、この程度の含水率になるようにする。盛付済みのパレットでの混練物の厚さは例えば40cmで、通気性を確保して、均一な発酵を切り返しなしに行うため、厚さは10cm〜80cm程度が好ましく、特に好ましくは20〜60cm程度とする。
【0033】
処理母材中のおが屑は、混練物の通気性を高め、微生物等を保持し、生じた悪臭や腐敗液等を吸収する。処理母材と有機廃棄物との混練物は、微生物で栄養分を消化されて無臭無害化し、実際には処理母材を振り掛けた後はほとんど臭わない。
【0034】
さらに振掛機では例えば100リットル程度の処理母材を混練物の表面に振り掛ける。ここでの処理母材は熟成済みの混練物そのものであるが、量が不足する場合はおが屑等を加え、微生物が老化あるいは変質すると、微生物の水溶液などを加えても良い。パレット自動倉庫では、空調装置36,37により換気と除湿と温度調整とが行われており、混練物が微生物によって消化される際の発酵熱で、自動倉庫内の気温は外気温よりもやや高く、換気量を制御することにより、ほぼ一定温度に空調されると共に、混練物からの蒸発による湿度増を防止する。
【0035】
パレット自動倉庫内で、混練物は約2週間程度熟成され、処理母材中の微生物により生ゴミ等の有機廃棄物が消化され、好気性発酵なので悪臭の発生量は少ない。この間の最初の1週間に混練物は70℃程度まで昇温し、高温菌が活動して、蛋白質や糖類、セルロースなどが分解され、次の1週間で温度が室温付近まで低下してリグニンなどの分解の遅い成分が分解される。この発酵は、パレット上の好気性発酵で、おが屑などにより通気性を高めていることにより、アンモニアや硫化水素等の発生は僅かである。また微量に生じたアンモニア等の悪臭は、混練物の表面に振り掛けられた処理母材で吸着され、分解される。さらに処理母材を振り掛けることにより、混練物の上面からの熟成を促進し、全体として混練物の熟成を速める。またパレットの主要部を木製とする、あるいはパレットの底部を簀の子状とする、または底部にメッシュを設けると、混練物は上下から通気を得ることができる。さらにパレット上に盛り付けるので、バケット等に盛り付ける場合と異なり、側面方向からの通気性も得ることができる。そしてパレットとパレット間の上下の隙間や、スタッカークレーンの走行路から通気して、混練物へ空気を供給する。これらのため、均一にかつ短時間で多量の生ゴミの熟成を終えることができる。
【0036】
混練物は、処理母材を振り掛けた後はほとんど臭わない。熟成した混練物はパレット当たり1100リットル程度で体積はほとんど変化せず、含水率は54%程度であり、混練振り掛け時の含水率60〜65%よりもやや乾燥している。病原菌や植物の種子などは、発酵初期に70℃程度まで昇温した際に死滅しており、無害である。熟成した混練物は無臭無害で、分解可能な有機物はほとんどない。熟成済みの混練物は篩・小分け機で篩に掛けられ、異物を除去される。続いて篩を通過した混練物は計量器で計量され、次の混練用,振掛用に所定量ずつ計量されて、ケース自動倉庫で保管される。この所定量は、次の混練用が例えば1000リットル、振り掛け用が100リットルで、消化が進みすぎて合計量が1100リットルに達しない場合は、おが屑等を補充して合計量を1100リットルにする。
【0037】
コンポスト生産などの他の用途のため、熟成した混練物を抽出する場合、抽出量とほぼ同量のおが屑等の繊維分を加えて、混練用と振り掛け用とで、合計量を1100リットルにする。そして混練用や振り掛け用などの、有機廃棄物処理システム内での循環利用の割合は、例えば50%以上、好ましくは70%以上とし、特に好ましくは70〜90%とする。またコンポスト生産等の他の用途が無い場合は、100%を混練用や振り掛け用として循環利用する。混練用に計量した処理母材は、混練前に必要に応じておが屑等の繊維分を補充し、ケース自動倉庫に再入庫する。そしてケースをコンベヤで混練・盛付機まで搬出して、生ゴミと混練して、次の生ゴミの処理に用いる。
【0038】
図6にコンポスト生産の工程を示すと、コンポスト(堆肥)の需要は季節によって著しく変動するので、コンポストの生産量も季節変動する。そこでコンポスト生産が必要になるまで、熟成した混練物のうちで過剰分をコンポスト用に小分けし、ケース自動倉庫に保管する。なおコンポスト生産を比較的長期間行わない場合は、熟成した混練物を全量循環再利用する。コンポスト生産用には、籾殻等を加えてこれを混練・盛付機の粉砕・投入部で粉砕し、鶏糞や食用油、米糠等の栄養分を適宜に加えて処理母材と籾殻等を混練し、パレット上に盛り付ける。
【0039】
籾殻を粉砕する際にはかなりの埃が発生し、しかも粉砕済みの籾殻は飛びやすく保管性に劣るので、混練・盛付機で投入と同時に粉砕する。また小規模な有機廃棄物処理システム2なので、混練・盛付には生ゴミにもコンポスト化にも同じ装置を用いる。そして籾殻と混練し栄養分を加えた処理母材を、同様のパレットを用いて自動倉庫に収容し、1週間程度熟成し、熟成したコンポストはホッパから排出して平置き場等に保管し、出荷する。
【0040】
実施例では投入した有機廃棄物を有機廃棄物処理システム2内で無臭無害化し、廃棄物となるのは金属やプラステック等の異物程度である。これ以外にコンポストが生じるが、これは廃棄物ではなく有効利用できる。このように実施例では有機廃棄物をほぼ閉鎖的に処理でき、また悪臭の発生が少なく、熟成を立体的な自動倉庫内で効率的に制御しながら行うことができ、多量の有機廃棄物を短時間で均一に処理できる。
【0041】
実施例は生ゴミの処理を中心に説明したが、水産廃棄物、食品加工廃棄物、畜産廃棄物、林業廃棄物、屎尿や、活性汚泥やヘドロなどの有機汚泥、飲料廃棄物や落ち葉、剪定廃棄物、製材工場の廃棄物、製紙工場の廃棄物などでも同様である。実施例では、好気性発酵を用いるので悪臭の発生が少なく、処理母材を振り掛けるのでハエや虫が寄りつかず、2週間程度で短期間に有機廃棄物を分解できる。またCO2の発生やダイオキシンの発生などの環境への負担が少なく、設備費が僅かで、焼却、脱硝、脱硫、脱塵などの処理も不要なため、運営コストも低い。熟成済みの混練物は処理システム内で再使用でき、2次廃棄物は僅かで、2次廃棄物は無害無臭でコンポストなどに用いることができる。
【0042】
【第1の変形例】
実施例では、直線状に配列した孔から混練物を落下させ、パレットを孔の配列方向とほぼ直交方向に移動させて盛り付けるようにした。混練物は、堆肥状の処理母材に有機廃棄物を混練したものであり、流動性に乏しく、処理母材や廃棄物の固まり自体が複雑に絡まり合って、均一に盛り付けるのが難しい。そこで処理母材をさらに均一に盛り付けるようにした変形例を以下に示す。図7,図8の変形例では、前記の混練部64の下部にコンベヤ102を配置して、型枠100を図7の左側へと搬送するようにする。型枠100は金属製で、101はその縁であり、断面が長手方向にも短辺方向にも台形状で、底面は例えば単純な平面である。そして型枠100の内側の凹部の形状は、混練物57をパレット56に盛り付けたい形状とする。104はチェーンコンベヤ等のコンベヤで、パレット56を図7の下から上へと搬送し、108はリフターで、チェーンコンベヤやローラコンベヤ等のコンベヤ102で搬送されてきた型枠100をリフトさせて、縁101上にパレット56が載るようにする。
【0043】
110は反転機で、例えば180゜回動自在な一対のアーム112を備え、アーム112には出没自在なチャック114を設ける。そしてチャック114は、電磁石や真空吸着あるいは摩擦力等により、型枠100の例えば側面を保持する。116は上部チャックで、出没部材118を設けてあり、出没部材118が図8の左側のように出状態をとると、型枠100の側面をチャック114でチャックし、パレット56を出没部材118で支えるので、パレット56と型枠100とが一体にアーム112で把持され、180゜回動自在になる。
【0044】
第1の変形例での動作を示す。型枠100は最初混練部64の下部にあり、コンベヤ102で図7の左側へ型枠100が移動しながら、孔70から混練物57が投入されて、型枠100内に充填される。この後、型枠100はコンベヤ102でリフター108上まで運ばれて停止する。次いでアーム112は、先端が上を向いた中立位置から、図8の反時計方向に例えば90゜回動し、型枠100をチャック自在な位置まで回動する。次にコンベヤ104によりパレット56がアーム112上を通過するように搬送され、リフター108で型枠100を上昇させる。ここから出没自在なチャック114を、型枠100の側面へ向けて前進させ、電磁石をオンさせる、真空吸着する、あるいはチャック114の先端を型枠100の側面に当接させて摩擦力を増す等により、チャック114で型枠100を保持する。これと同時に、上部チャック116から出没部材118を前進させ、パレット56を把持する。このようにしてアーム112で型枠100とパレット56とを保持し、例えば180゜回動させて、コンベヤ106上に載置する。
【0045】
次いで出没部材118を没位置に切り換え、チャック114で型枠100のみをチャックして、リフター108上へ型枠100を載置する。この後、チャック114を後退させて、アーム112を例えば図8の時計方向に90゜回動させて中立位置へ戻し、リフター108を下降させ、型枠100を混練部64の下部へコンベヤ102で搬送する。なおコンベヤ104はチェーンコンベヤ等で構成し、アーム112や型枠100等はチェーンコンベヤのチェーンとチェーンとの隙間を通過できるようにしておく。
【0046】
このようにすると型枠100を180゜回動させる過程で、型枠内の混練物は激しく流動し、混練物間の固まり等がほぐれて、パレット56上にほぼ均一な密度で、かつ型枠100の内部形状に応じた形で、均一に盛り付けることができる。なおここではアーム112を、型枠100の縁101と衝突させずに運動させるため、出没自在なチャック114を用いたが、アーム112を図8の実線の状態からさらに反時計方向に回動させて、ローラ等で構成したコンベヤ102の隙間を通過して待避させるようにしても良い。このようにすればアーム112がコンベヤ102の搬送面よりも下へ移動した状態が待避位置で、アーム112は待避位置から型枠100のチャック位置、コンベヤ106への載置位置、コンベヤ102への載置位置、待避位置の順に動作することになる。
【0047】
【第2の変形例】
図9〜図11に、第2の変形例を示す。これらの図において、120は成型部材で、122はその上部、124はその側面部、125はつばで、126は両端部である。そして成型部材120の両端部126は、エアシリンダー等のシリンダー128により昇降自在に支承されている。成型部材120の下部を、パレット56がコンベヤ17で通過するようにしてあり、成型部材120は例えば混練部と図3の振掛機との間に配置する。図9,図10の右からコンベヤ17によりパレット56が搬送されてくると、成型部材120はこれに同期して昇降し、この間に混練物57は成型されて、図9,図10の左側のように均一な厚さに成型される。図9,図10で、混練物57の右端の端部では、成型部材120により充分に成型されないことがある。このような場合、コンベヤ17を逆転させて、図9,図10の左側へと成型部材120を通過し終わったパレット56を、成型部材120に対して、図の左から右へと搬送する。すると、混練物57の後端も成型できる。
【0048】
このようにすると、極めて簡単な機構により混練物57を所望の形状に均一に成型できる。また成型の過程で、シリンダー128により成型部材120を上下方向に振動させ、その落下力等で混練物57の上面を叩きながら成型するようにすると、混練物の表面を適度に固め、しかも振動を加える間に流動性を増して、混練物の充填ムラを除くことができる。
【0049】
【第3の変形例】
図12に第3の変形例を示す。130,130は一対の成型部材で、混練物の盛付範囲よりも小さな部材に分割する。成型部材130の図12の紙面に垂直な方向での長さは、混練物57を盛り付けた長さ程度としても良く、あるいは図12の紙面に垂直方向の長さを、同じ方向での混練物57の盛り付け長さよりも短くして、混練物を一部ずつ成型するようにしても良い。132はエアシリンダー等のシリンダーで、成型部材130を前後進させ、134は振動源で、成型部材130を振動させるためのものである。この振動の種類は、1Hz〜100Hz程度の低周波振動でも、超音波振動でも良い。
【0050】
混練部64で混練物を盛り付けたパレット56は、コンベヤ17により搬送されてくる。成型部材130は、図3の振掛機と図2の混練・盛付機との間などに配置され、シリンダー132で成型部材130を混練物57に押し付けて所望の形状にし、この間に振動源134から振動を加えて、混練物57の流動性を改善し、充填むらを解消する。そしてコンベヤ17でパレット56を搬送しながら、成型部材130で混練物57を部分的に成型して、混練物57の山の両側面をあたかもスタンプで部分的に押すことを繰り返すようにして、成型する。また混練物57の盛付長さに相当する長さの一対の成型部材を用いて、盛り付けた混練物を一括して成型しても良い。ここで振動源134は、混練物の流動性を増して成型性を高めると共に、混練物の表面に適度な堅さを与えるためのもので、振動源134はなくても良い。
【0051】
【実施例の効果】
実施例や変形例では、パレット56の混練物57を均一に盛り付けることができる。有機廃棄物の微生物による消化は好気性発酵なので、適度な通気性を確保することことが重要で、また発酵を進めるには混練物57からの熱の逃げを制限し、必要な温度まで昇温しやすくすることが必要である。このため混練物57を盛り付ける際の厚さが重要になる。そして実施例では直線に沿って設けた孔から混練物を落下させながら、パレットをこれと直交する方向に移動させること(図2)や、型枠に投入した混練物をパレットと共に180゜反転させて盛り付けること(図7,図8)、あるいは適宜の成型部材を用いて成型する等により、パレット上の混練物を均一に盛り付けることができる。
【図面の簡単な説明】
【図1】 実施例の有機廃棄物処理システムのレイアウトを示す平面図
【図2】 実施例で用いた混練・盛付機を示す平面図
【図3】 実施例で用いた振掛機を示す平面図
【図4】 実施例で用いた篩・小分け機を示す側面図
【図5】 実施例での、生ゴミの循環消滅サイクルを示す工程図
【図6】 実施例での、コンポスト製造工程を示す工程図
【図7】 第1の変形例の盛付装置を示す平面図
【図8】 第1の変形例の盛付装置の側面図
【図9】 第2の変形例の盛付装置の側面図
【図10】 第2の変形例の盛付装置の平面図
【図11】 第2の変形例の盛付装置の正面図
【図12】 第3の変形例の盛付装置の正面図
【符号の説明】
2 有機廃棄物処理システム
4 ピット
5 コンベヤ
6 破砕機
7 土壌脱臭部
10,11 混練・盛付機
12〜18 コンベヤ
19 作業エリア
20,21 振掛機
22 コンベヤ
24 パレット自動倉庫
25 走行路
26 スタッカークレーン
28,29 ラック
31〜34 ステーション
35 ホッパ
36,37 空調機器
40 篩・小分け機
42 ケース自動倉庫
44 スタッカークレーン
45,46 ラック
48 ステーション
50 平置き場
52 生ゴミケース
53 生ゴミ
54 処理母材ケース
55 処理母材
56 パレット
57 混練物
60 投入部
62 粉砕・投入部
64 混練部
65 スクリューコンベヤ
66 崩落面
68 ノズル
70 孔
72 ホッパ
73 首振りコンベヤ
74 投下孔
80 反転投入機
82 ホッパ
84 篩
86 ホッパ
88 計量器
89 ダクト
90 異物容器
100 型枠
101 縁
102〜106 コンベヤ
108 リフター
110 反転機
112 アーム
114 チャック
116 上部チャック
118 出没部材
120 成型部材
122 上部
124 側面部
125 つば
126 両端部
128 シリンダー
130 成型部材
132 シリンダー
134 振動源
[0001]
[Field of the Invention]
The present invention relates to a system for treating organic waste such as garbage, and more particularly to a system in which organic waste is digested by microorganisms to make it odorless and harmless.
[0002]
[Prior art]
A system for producing compost by treating organic waste such as raw garbage with microorganisms is known. In such a system, there is a problem that a large place is required because fermentation of raw garbage by microorganisms requires a long time, and the location is restricted due to a strange odor during fermentation.
[0003]
In this regard, the applicant has provided a kneading means for kneading by providing a kneading means for kneading the treatment base material containing microorganisms with organic waste, and a warehouse for storing and aging the kneaded material for a predetermined period. Has been filed for an organic waste treatment system (Japanese Patent Application No. 2001-18547) in which a predetermined amount is fed to the kneading means as a processing base material for kneading with the next organic waste.
[0004]
[Problems of the Invention]
The basic problem of the present invention is that organic waste can be efficiently processed in a relatively small space, secondary waste is less generated, and the kneaded product can be placed on the pallet with a substantially uniform thickness. It is to provide a waste treatment system .
[0008]
The present invention is provided with a kneading means for kneading a treatment base material containing microorganisms with organic waste, and a warehouse for storing and aging the kneaded material for a predetermined period. An organic waste treatment system for supplying to the kneading means as a processing base material for kneading with organic waste,
A mold for feeding the kneaded material from the kneading means, and a reversing means for inverting the mold and placing the kneaded material on a pallet in a shape corresponding to the mold , To do.
[0009]
Preferably, the reversing unit integrally reverses the pallet and the mold from a state where the pallet is placed on the mold to a state where the mold is placed on the pallet .
[0010]
[Operation and effect of the invention]
In this invention, the processing base material containing microorganisms and the organic waste are kneaded, placed on a pallet, stored in a warehouse and aged. During this time, the organic waste is digested by microorganisms, and the matured kneaded material becomes a processing base material for kneading with the next organic waste. Since aging can be performed in a warehouse, a large amount of kneaded material can be stored in a relatively small space, and organic waste is digested by microorganisms and becomes the next processing base material, so that generation of secondary waste is reduced. The warehouse is preferably an automatic warehouse, but is not limited thereto.
[0014]
In this invention, the kneaded material is put into a mold, and the mold is inverted and placed on a pallet. Since the kneaded material is poor in fluidity, it is difficult to obtain a desired shape even if it is simply pressed from above with a mold. Therefore, when the mold is put into the mold and the mold is inverted, the kneaded material falls while flowing apart and is placed on the pallet substantially along the mold. For this reason, the kneaded material can be placed on the pallet almost uniformly in a shape along the formwork.
[0015]
In the invention of claim 2 , the pallet and the mold are integrally reversed from the state where the mold is covered with the pallet to the state where the mold is placed on the pallet. For this reason, it is not necessary to provide a movable bottom plate or the like on the mold so that the kneaded material does not fall during reversal.
[0016]
【Example】
1 to 6 show an outline of a system for treating organic waste such as garbage. In these figures, 2 is an organic waste treatment system, 4 is a pit, and organic waste such as garbage is used in garbage trucks, food factories, fish processing plants, agricultural processing plants, and sewage treatment plants. From sludge tanks, paper mills, and other pipes. In the case of raw garbage, for example, it is packed in an easily decomposable plastic bag or the like and put into a pit, and food processing waste, fishery processing waste or the like is put as it is, for example, naked, and conveyed to the crusher 6 by the conveyor 5. In the crusher 6, the organic waste (eg, garbage such as vegetables) introduced from the upper part is sandwiched between crushing means such as a pair of rollers or a pair of gears and dropped, and dropped, and the dropped organic waste Is received in an appropriate case, and conveyed to the next kneading and serving machines 10 and 11 by the conveyors 12 and 13. In addition, since a considerable bad odor is generated when organic waste is crushed, it is preferable to deodorize the air in the crusher 6 by sending it to a deodorizing means such as the soil deodorizing unit 7.
[0017]
The kneading and placing machines 10 and 11 knead the crushed organic waste with the processing base material, and then, for example, place it on a wooden pallet with a substantially uniform thickness. The pallet to be used may be made of resin, iron, or the like that does not easily rot. Reference numerals 12 to 18 denote conveyors. The conveyors 12 and 13 convey cases containing organic waste from the crushing machine 6 to the kneading and setting machines 10 and 11, and the conveyors 14 and 15 are processed from the case automatic warehouse 42 to the processing mother. The case containing the material is conveyed to the kneading and setting machines 10 and 11. The conveyors 16 and 17 convey a pallet loaded with a kneaded product of the processing base material and organic waste such as raw garbage to the pallet automatic warehouse 24 via the shakers 20 and 21. The conveyor 18 conveys the case in the automatic case warehouse 42 to the work area 19, and the work area 19 performs operations such as replenishing sawdust to the case containing the processing base material.
[0018]
The kneading and sorting machines 10 and 11 mix organic waste such as raw garbage and the processing base material at a predetermined ratio, and the kneaded material is placed on the pallet to a substantially constant thickness, for example. The processing base material is sprinkled almost uniformly on almost the entire surface of the kneaded material so as to cover the upper surface of the kneaded material with the shakers 20 and 21. The pallet on which the processing base material is sprinkled by the shakers 20 and 21 is conveyed to the stations 31 and 32 in the automatic warehouse by the conveyors 16 and 17.
[0019]
In the automatic pallet warehouse 24, a pallet transport stacker crane 26 is caused to travel along a travel path 25 provided in the center in the longitudinal direction, and a pair of racks 28 and 29 are provided on both sides of the travel path 25, for example. A pallet on which the kneaded material is placed is placed on the shelves of the racks 28 and 29, and the kneaded material is aged on the pallet while controlling the temperature and humidity in the automatic warehouse 24 as necessary. Stations 31 and 32 for transferring the pallets to the stacker crane 26 are arranged at the tips of the conveyors 16 and 17 for conveying the pallets from the shakers 20 and 21 to the automatic warehouse 24. There is another station 33 in the automatic warehouse 24. The station 33 is provided with a conveyor, receives a pallet on which the aged kneaded material is placed from the stacker crane 26, and carries the pallet to the sieve / subdivider 40. The station 34 is a station for carrying out the compost aged in the automatic warehouse 24 from the hopper 35, and includes a conveyor.
[0020]
Reference numerals 36 and 37 denote air conditioners which air-condition the interior of the automatic warehouse 24 using the travel path 25 of the stacker crane 26 as an air passage. For example, the air conditioner 36, 37 blows outside air to ventilate the interior of the automatic warehouse 24, dehumidifies the air in the automatic warehouse 24, or adjusts the temperature of the air in the automatic warehouse 24. is there. In order to ripen the kneaded material on the pallet in the automatic warehouse 24, it is important to control the temperature and humidity. The temperature and humidity are maintained at conditions where microorganisms in the processing base material are easy to act, and the kneaded material on the pallet is kept. Aged uniformly and in a short time. Note that ventilation may be performed by opening and closing a window without using an air conditioner, and the frequency may be changed according to temperature and humidity.
[0021]
The sieve / subdivider 40 receives a pallet on which the aged kneaded material is placed from the pallet automatic warehouse 24, separates the kneaded material from the pallet and puts it on a sieve, and separates foreign matters such as metal and plastic. The kneaded material from which the foreign matter has been separated is subdivided by a predetermined amount into other uses such as kneading, sprinkling, compost production and disposal of the next organic waste with a measuring instrument. The predetermined amount here is a predetermined amount for each application, and the predetermined amount changes as the application changes. The subdivided kneaded material is stored in an appropriate case and stored in the case automatic warehouse 42. 44 is a stacker crane of the case automatic warehouse 42, 45 and 46 are, for example, a pair of racks, and 48 is a station for connecting the sieve / sorter 40 and the case automatic warehouse 42, and has a conveyor for carrying the case. Yes.
[0022]
In addition to this, the organic waste processing system 2 is provided with a parking lot, an office, a material storage, a flat storage 50 for flatly placing produced compost, and the like. In the organic waste treatment system 2 shown in FIG. 1, the layout itself is arbitrary, but the layout of FIG. 1 is suitable for a relatively small-scale organic waste treatment system provided with one pallet automatic warehouse 24, for example. ing.
[0023]
FIG. 2 shows the configuration of the kneading and serving machine 11. In the following, for convenience of explanation, it is assumed that garbage is treated, but the same applies to other organic waste. A garbage case 52 containing garbage 53 and the like is sent from the crusher by the conveyor 13. A processing base material case 54 containing the processing base material 55 is sent from the automatic case warehouse by the conveyor 15. The internal garbage 53 is dropped by chucking the case 52 with the input unit 60 and reversing the garbage case 52 by 180 °. In the crushing / feeding unit 62, the processing base material 55 is similarly dropped by chucking the processing base material case 54 and turning it 180 °. The crushing / input unit 62 is also used for crushing rice husks and the like, and therefore includes crushing rollers and gears. In other respects, the crushing and charging unit 62 is configured in the same manner as the charging unit 60.
[0024]
Reference numeral 56 denotes a pallet made of wood, iron, plastic, or the like, and preferably has a breathability improved by making the bottom part a cocoon shape or providing a mesh on the bottom part. A kneaded material 57 is placed on the pallet 56 so as to have a substantially uniform thickness so that the aging proceeds uniformly at the same speed.
[0025]
The garbage 53 and the processing base material 55 are put into a kneading unit 64, and the kneading unit 64 is provided with, for example, three screw conveyors 65 and the like. At the time of kneading, the garbage conveyor and the processing base material are transported to the right side of FIG. 2 by the screw conveyor 65, and the transported raw garbage and the processing base material are transported to the collapsing surface 66 and broken, and are kneaded during this time. At the time of serving, the screw conveyor 65 is rotated in the reverse direction to convey the kneaded material to the left side of FIG. The conveyed kneaded material falls from the hole 70 provided in the left bottom of the kneading part 64 in FIG. 2, and the pallet 56 is conveyed by the conveyor 17 from right to left in FIG. Then, the kneaded material can be placed on the pallet 56 in a uniform thickness. Here, the arrangement direction of the holes 70 is the short side direction of the pallet 56, and the conveyance direction of the conveyor 17 is the long side direction of the pallet 56, but these may be reversed, and the arrangement direction of the holes 70 and the conveyance direction of the conveyor 17 are different. What is necessary is just to be substantially orthogonal. In FIG. 2, the plurality of holes 70 are arranged along a straight line, but may be arranged along a curve such as an arc.
[0026]
No. 68 is a nozzle, and microorganisms in the processing base material change as the garbage is repeatedly decomposed. Therefore, an aqueous solution of the same type of microorganism as that used in the processing base material is replenished at the time of kneading. It is used to prevent Moreover, it is preferable that the kneaded material 57 put on the pallet 56 has a substantially constant water content, and water may be replenished from the nozzle 68 during a dry period such as winter. The moisture content can be controlled roughly. For example, the moisture content of raw garbage is about 95% in summer and about 70% in winter, preferably about 60 to 65% after kneading and sprinkling. Further, the moisture content after aging is, for example, about 54%. Therefore, it is sufficient to replenish water at the operator's discretion without using a moisture meter. Conversely, if the water content is too high, treatment such as dehydration or drying may be performed.
[0027]
In the embodiment, two kneading and setting machines 10 and 11 are provided, and these configurations are basically the same. When composting is also produced in the kneading and serving machine 10, both the kneading and serving machines 10 and 11 are provided with a crushing and charging unit 62. In the case where compost production is not performed in the kneading and serving machine 10, the kneading and serving machine 10 may be provided with a pair of input portions 60 having no grinding function. In addition, the mechanism for performing kneading | mixing and serving with the same apparatus is not restricted to the screw conveyor 65 of FIG. For example, a screw or blade is installed in the mixer and rotated to knead, and an openable / closable hole is provided at the bottom of the mixer. When kneading, the hole is closed and the kneaded material is confined, and when serving is kneaded, the hole is opened. Should be placed out of the hole.
[0028]
FIG. 3 shows the configuration of the shaker 20, and the other shakers 21 have the same configuration. The conveyor 16 conveys the pallet 56 from the kneading and setting machine 10 to the automatic pallet warehouse 24, 72 is a hopper for feeding the processing base material, and a swinging conveyor 73 for swinging motion is provided at the outlet. The processing base material provided from the hopper 72 is conveyed to the right side of FIG. 3 by the conveyor 73 and is sprinkled almost uniformly on the kneaded material 57 from the dropping hole 74 at the tip. Since the conveyor 73 swings, the processing base material is sprinkled so as to cover the entire surface of the kneaded material 57 with a substantially uniform thickness, and the thickness to be sprinkled is equal to the thickness of the kneaded material 57 (for example, about 40 cm thick). For example, about 1/10. Then, while the pallet 56 is conveyed to the left side of FIG. 3 by the conveyor 16, the processing base material is sprinkled almost uniformly on the kneaded material 57.
[0029]
FIG. 4 shows the configuration of the sieving / dividing machine 40. The pallet 56 on which the aged kneaded material 57 is placed is conveyed from the station 33 by the conveyor from the station 33. The pallet 56 is chucked in the reversing and charging machine 80 and reversed by, for example, 180 °, whereby the kneaded material 57 falls into the hopper 82. A sieve 84 such as a vibrating sieve is provided on the outlet side of the hopper 82, and a metal piece or a plastic piece that cannot pass through the mesh of the sieve is removed and discharged from the duct 89 to the foreign material container 90. The kneaded material that has passed through the sieve 84 enters the measuring device 88 from the hopper 86 and is divided into units for next kneading, next shaking, compost production, and the like. The case is stored in the automatic case warehouse 42 by a conveyor. Note that the amount of processing base material is different for kneading, shaking, and compost production, and the amount corresponding to each application is measured and subdivided by a measuring device 88.
[0030]
FIG. 5 shows an organic waste treatment process in the embodiment. Organic waste such as raw garbage thrown in from the pit is crushed by a crusher, and the generated bad odor is treated by a soil deodorizing section or the like. The crushed organic waste is transported to a kneading and setting machine, and the processing base material weighed in an amount for kneading is transported through a conveyor from the case automatic warehouse and kneaded with the crushed organic waste. At this time, in order to compensate for the alteration of microorganisms, an active solution comprising a microorganism solution is added as necessary, and water is replenished in the dry season.
[0031]
In the kneading / slicing machine, kneading is first performed by reversing the rotation direction of the screw conveyor using a single kneading device, and then the pallet is scaled. When the pallet is transported by a conveyor and then placed by a kneading and placing machine, it can be automatically placed to a substantially uniform thickness. The pallet loaded with the kneaded material passes through the lower part of the shaker by a conveyor, and the processing base material is sprinkled almost uniformly on the surface. The processing base material used for the shake is also stored in the case automatic warehouse for each case, and is conveyed to the shaker by a conveyor and sprinkled.
[0032]
The pallet sprinkled with the processing base material is received by a conveyor into a pallet automatic warehouse, and is automatically placed and stored on a predetermined shelf in the rack. As a specific example, the amount of organic waste per pallet is about 150 kg, and the moisture content is about 70% in winter and about 95% in summer. The processing base material added by the kneader is mainly an aged kneaded material, and its volume is, for example, about 1000 liters. When the processing base material is insufficient, the amount may be increased with sawdust, rice straw, wheat straw, rice husk, bark (wood skin) or the like. The mixing ratio of the organic waste and the treated base material is preferably about 3 to 20 liters of the treated base material per 1 kg of the organic waste. The water content of the kneaded product is about 60 to 65%, and water is replenished in winter so that the water content becomes this level. The thickness of the kneaded material on the pallet is 40 cm, for example, in order to ensure air permeability and perform uniform fermentation without reversing, the thickness is preferably about 10 cm to 80 cm, particularly preferably 20 to 60 cm. To the extent.
[0033]
The sawdust in the treated base material enhances the air permeability of the kneaded product, retains microorganisms, etc., and absorbs the generated bad odor or rot. The kneaded mixture of the treated base material and the organic waste is digested with nutrients by microorganisms to make it odorless and harmless. In fact, it hardly smells after being sprinkled with the treated base material.
[0034]
Further, in the shaker, for example, a processing base material of about 100 liters is sprinkled on the surface of the kneaded product. The treated base material here is an aged kneaded material itself, but when the amount is insufficient, sawdust or the like may be added, and when the microorganisms are aged or deteriorated, an aqueous solution of microorganisms may be added. In the automatic pallet warehouse, ventilation, dehumidification, and temperature adjustment are performed by the air conditioners 36 and 37, and the temperature in the automatic warehouse is slightly higher than the outside temperature due to fermentation heat when the kneaded material is digested by microorganisms. By controlling the ventilation amount, the air-conditioning is air-conditioned to a substantially constant temperature, and an increase in humidity due to evaporation from the kneaded material is prevented.
[0035]
In the automatic pallet warehouse, the kneaded product is aged for about two weeks, organic waste such as garbage is digested by microorganisms in the treated base material, and because of aerobic fermentation, the amount of bad odor generated is small. During the first week during this period, the kneaded mixture is heated to about 70 ° C., the high-temperature bacteria are activated, proteins, saccharides, cellulose, etc. are decomposed, and in the next week the temperature drops to near room temperature and lignin, etc. Slowly decomposed components are decomposed. This fermentation is an aerobic fermentation on a pallet, and the generation of ammonia, hydrogen sulfide, and the like is slight due to increased aeration by sawdust and the like. Further, a bad odor such as ammonia generated in a minute amount is adsorbed and decomposed by the processing base material sprinkled on the surface of the kneaded product. Further, by sprinkling the treated base material, aging from the upper surface of the kneaded material is promoted, and the aging of the kneaded material is accelerated as a whole. Further, if the main part of the pallet is made of wood, or the bottom part of the pallet is made into a cocoon shape, or a mesh is provided on the bottom part, the kneaded product can obtain ventilation from above and below. Furthermore, since it arrange | positions on a pallet, unlike the case where it arrange | positions to a bucket etc., the air permeability from a side surface direction can also be acquired. Then, air is supplied to the kneaded product by aeration from the upper and lower gaps between the pallets and the travel path of the stacker crane. For these reasons, aging of a large amount of garbage can be completed uniformly and in a short time.
[0036]
The kneaded material hardly smells after the treated base material is sprinkled. The aged kneaded product is about 1100 liters per pallet, the volume hardly changes, the water content is about 54%, and is slightly dryer than the water content 60 to 65% at the time of kneading. Pathogens and plant seeds are killed when heated to about 70 ° C. at the beginning of fermentation and are harmless. The aged kneaded product is odorless and harmless, and there is almost no decomposable organic matter. The aged kneaded product is sieved by a sieve / divider to remove foreign matter. Subsequently, the kneaded material that has passed through the sieve is weighed by a measuring device, weighed by a predetermined amount for the next kneading and shaking, and stored in a case automatic warehouse. This predetermined amount is, for example, 1000 liters for the next kneading, 100 liters for sprinkling, and if digestion has progressed too much and the total amount does not reach 1100 liters, replenish sawdust etc. to make the total amount 1100 liters .
[0037]
When extracting an aged kneaded product for other uses such as compost production, add almost the same amount of fibers such as sawdust to the total amount of kneading and sprinkling for 1100 liters. . And the ratio of the circulation utilization in the organic waste processing system for kneading or sprinkling is, for example, 50% or more, preferably 70% or more, and particularly preferably 70 to 90%. When there is no other use such as compost production, 100% is recycled for kneading or sprinkling. The treated base material weighed for kneading is supplemented with fibers such as sawdust as needed before kneading and re-stocked in a case automatic warehouse. Then, the case is carried out by a conveyor to a kneading and serving machine, kneaded with raw garbage, and used for the next processing of raw garbage.
[0038]
When the compost production process is shown in FIG. 6, since the demand for compost (compost) varies significantly depending on the season, the production amount of compost also varies seasonally. Therefore, until compost production is required, the excess of the aged kneaded material is subdivided for compost and stored in a case automatic warehouse. When compost production is not carried out for a relatively long period, the aged kneaded material is recycled in its entirety. For compost production, rice husk etc. is added and kneaded and pulverized at the crushing and charging part of the serving machine, and nutrients such as chicken manure, cooking oil and rice bran are added appropriately to knead the treated base material and rice husk etc. , Place on a pallet.
[0039]
When the rice husks are crushed, considerable dust is generated, and the crushed rice husks are easy to fly and have poor storage properties. Moreover, since it is a small-scale organic waste treatment system 2, the same apparatus is used for kneading and serving for both garbage and composting. The processed base material kneaded with rice husk and added with nutrients is stored in an automatic warehouse using the same pallet, aged for about one week, the aged compost is discharged from the hopper, stored in a flat place, etc., and shipped. .
[0040]
In the embodiment, the input organic waste is made odorless and harmless in the organic waste treatment system 2, and the amount of foreign matter such as metal or plastic is reduced to waste. In addition to this, compost is produced, but this can be used effectively rather than waste. As described above, in the embodiment, organic waste can be treated almost in a closed manner, the generation of bad odor is small, and aging can be performed while efficiently controlling in a three-dimensional automatic warehouse. Can be processed uniformly in a short time.
[0041]
Although the examples have been explained mainly on the treatment of garbage, marine waste, food processing waste, livestock waste, forestry waste, manure, organic sludge such as activated sludge and sludge, beverage waste and fallen leaves, pruning The same applies to waste, sawmill waste, paper mill waste, and the like. In the embodiment, since aerobic fermentation is used, the generation of malodor is small, and the processing base material is sprinkled so that the fly and insects do not come close, and the organic waste can be decomposed in a short time in about two weeks. In addition, the burden on the environment such as the generation of CO2 and the generation of dioxins is small, the equipment cost is small, and treatment such as incineration, denitration, desulfurization, and dust removal is unnecessary, so the operation cost is low. The aged kneaded product can be reused in the treatment system, and the secondary waste is little, and the secondary waste is harmless and odorless and can be used for composting.
[0042]
[First modification]
In the example, the kneaded material was dropped from the holes arranged in a straight line, and the pallet was moved in the direction substantially perpendicular to the arrangement direction of the holes and then placed. The kneaded material is a material obtained by kneading organic waste on a compost-like treated base material, has poor fluidity, and the treated base material and waste lump are intertwined in a complex manner, and it is difficult to dispose them uniformly. Therefore, a modified example in which the processing base material is arranged more uniformly is shown below. 7 and 8, the conveyor 102 is disposed below the kneading section 64 so that the mold 100 is conveyed to the left side of FIG. 7. The mold 100 is made of metal, 101 is an edge thereof, the cross section is trapezoidal in both the longitudinal direction and the short side direction, and the bottom surface is, for example, a simple plane. And the shape of the recessed part inside the formwork 100 is made into the shape which wants to arrange the kneaded material 57 on the pallet 56. FIG. 104 is a conveyor such as a chain conveyor, and conveys the pallet 56 from the bottom to the top of FIG. 7, and 108 is a lifter that lifts the formwork 100 conveyed by the conveyor 102 such as a chain conveyor or a roller conveyor. The pallet 56 is placed on the edge 101.
[0043]
Reference numeral 110 denotes a reversing machine, which includes, for example, a pair of arms 112 that can be rotated 180 °, and the arms 112 are provided with a retractable chuck 114. The chuck 114 holds, for example, the side surface of the mold 100 by an electromagnet, vacuum suction, friction force, or the like. Reference numeral 116 denotes an upper chuck, which is provided with a retracting member 118. When the retracting member 118 is in the protruding state as shown on the left side of FIG. 8, the side surface of the mold 100 is chucked by the chuck 114, and the pallet 56 is fixed by the retracting member 118. Since it is supported, the pallet 56 and the formwork 100 are held together by the arm 112 and can be rotated 180 °.
[0044]
The operation in the first modification will be described. The mold 100 is initially at the bottom of the kneading section 64, and the kneaded material 57 is charged from the hole 70 and filled into the mold 100 while the mold 100 is moved to the left side of FIG. 7 by the conveyor 102. After that, the mold 100 is carried on the lifter 108 by the conveyor 102 and stopped. Next, the arm 112 is rotated, for example, 90 ° counterclockwise in FIG. 8 from the neutral position with the tip facing upward, and the mold 100 is rotated to a position where it can be chucked. Next, the pallet 56 is conveyed so as to pass over the arm 112 by the conveyor 104, and the mold 100 is raised by the lifter 108. The chuck 114 that can be moved in and out is advanced toward the side surface of the mold 100 to turn on the electromagnet, vacuum-suck, or increase the frictional force by bringing the tip of the chuck 114 into contact with the side surface of the mold 100. Thus, the mold frame 100 is held by the chuck 114. At the same time, the retracting member 118 is advanced from the upper chuck 116 to grip the pallet 56. In this way, the mold 112 and the pallet 56 are held by the arm 112 and are rotated on, for example, 180 ° and placed on the conveyor 106.
[0045]
Next, the projecting member 118 is switched to the retracted position, and only the mold 100 is chucked by the chuck 114, and the mold 100 is placed on the lifter 108. Thereafter, the chuck 114 is retracted, and the arm 112 is rotated 90 ° clockwise in FIG. 8, for example, to return to the neutral position, the lifter 108 is lowered, and the mold 100 is moved to the lower part of the kneading section 64 by the conveyor 102. Transport. The conveyor 104 is constituted by a chain conveyor or the like, and the arm 112, the mold 100, or the like is allowed to pass through a gap between the chains of the chain conveyor.
[0046]
In this way, the kneaded material in the mold flows violently in the process of rotating the mold 100 by 180 °, loosening the lump between the kneaded materials, and the mold frame has a substantially uniform density. It can be uniformly arranged in a shape corresponding to the internal shape of 100. Here, in order to move the arm 112 without colliding with the edge 101 of the formwork 100, the retractable chuck 114 is used. However, the arm 112 is further rotated counterclockwise from the solid line state in FIG. Thus, it may be retracted by passing through the gap of the conveyor 102 constituted by rollers or the like. In this way, the arm 112 is moved to a position lower than the conveying surface of the conveyor 102, and the arm 112 moves from the retracted position to the chuck position of the mold 100, the placement position on the conveyor 106, and the position to the conveyor 102. The operation is performed in the order of the placement position and the retracted position.
[0047]
[Second modification]
9 to 11 show a second modification. In these drawings, 120 is a molding member, 122 is an upper part thereof, 124 is a side face part thereof, 125 is a collar part, and 126 is both end parts. Both end portions 126 of the molding member 120 are supported by a cylinder 128 such as an air cylinder so as to be movable up and down. The pallet 56 passes through the lower portion of the molding member 120 by the conveyor 17, and the molding member 120 is disposed, for example, between the kneading unit and the shaker of FIG. When the pallet 56 is conveyed from the right side of FIGS. 9 and 10 by the conveyor 17, the molding member 120 is moved up and down in synchronization with this, and the kneaded material 57 is molded during this time, and the left side of FIGS. So as to have a uniform thickness. 9 and 10, the right end of the kneaded material 57 may not be sufficiently molded by the molding member 120. In such a case, the conveyor 17 is reversed, and the pallet 56 that has passed through the molding member 120 to the left in FIGS. 9 and 10 is conveyed from the left to the right in the figure with respect to the molding member 120. Then, the rear end of the kneaded material 57 can also be molded.
[0048]
If it does in this way, the kneaded material 57 can be uniformly shape | molded in a desired shape with a very simple mechanism. Further, in the molding process, if the molding member 120 is vibrated in the vertical direction by the cylinder 128 and molded while striking the upper surface of the kneaded material 57 with its dropping force or the like, the surface of the kneaded material is properly hardened and vibration is also generated. During the addition, the fluidity can be increased to eliminate uneven filling of the kneaded product.
[0049]
[Third Modification]
FIG. 12 shows a third modification. 130 and 130 are a pair of molding members, which are divided into members smaller than the assembling range of the kneaded material. The length of the molding member 130 in the direction perpendicular to the paper surface of FIG. 12 may be about the same as the length of the kneaded material 57 or the length of the molding member 130 perpendicular to the paper surface of FIG. The kneaded material may be molded part by part with a length shorter than 57. Reference numeral 132 denotes a cylinder such as an air cylinder, which moves the molding member 130 forward and backward, and 134 is a vibration source for vibrating the molding member 130. The type of vibration may be low frequency vibration of about 1 Hz to 100 Hz or ultrasonic vibration.
[0050]
The pallet 56 on which the kneaded material is arranged in the kneading unit 64 is conveyed by the conveyor 17. The molding member 130 is disposed between the shaker of FIG. 3 and the kneading and setting machine of FIG. 2, and the cylinder 132 presses the molding member 130 against the kneaded material 57 to obtain a desired shape. A vibration is applied from 134 to improve the fluidity of the kneaded material 57 and eliminate uneven filling. Then, while conveying the pallet 56 by the conveyor 17, the kneaded material 57 is partially molded by the molding member 130, and it is repeated as if the both sides of the pile of the kneaded material 57 are partially pressed with a stamp. To do. Alternatively, the prepared kneaded material may be collectively molded using a pair of molded members having a length corresponding to the length of the kneaded material 57. Here, the vibration source 134 is for increasing the fluidity of the kneaded material to improve the moldability and imparting appropriate hardness to the surface of the kneaded material, and the vibration source 134 may be omitted.
[0051]
[Effects of the embodiment]
In the embodiment and the modification, the kneaded material 57 of the pallet 56 can be uniformly arranged. Digestion of organic waste by microorganisms is aerobic fermentation, so it is important to ensure adequate air permeability, and in order to proceed with fermentation, heat escape from kneaded material 57 is limited and the temperature is raised to the required temperature. It is necessary to make it easier. For this reason, the thickness when the kneaded material 57 is placed is important. In the embodiment, the pallet is moved in a direction perpendicular to the pallet while dropping the kneaded material from the hole provided along the straight line (FIG. 2), or the kneaded material put into the mold is inverted 180 ° together with the pallet. The kneaded material on the pallet can be evenly arranged by, for example, molding (FIGS. 7 and 8) or molding using an appropriate molding member.
[Brief description of the drawings]
FIG. 1 is a plan view showing a layout of an organic waste treatment system according to an embodiment. FIG. 2 is a plan view showing a kneading and serving machine used in the embodiment. FIG. 3 shows a shaker used in the embodiment. Plan view [Fig. 4] Side view showing the sieve / sorting machine used in the embodiment [Fig. 5] Process diagram showing the cycle of circulatory annihilation of garbage in the embodiment [Fig. 6] Compost manufacturing process in the embodiment FIG. 7 is a plan view showing a first modification example of the serving apparatus. FIG. 8 is a side view of the first modification example. FIG. 9 is a second modification example. FIG. 10 is a plan view of the second modification of the serving apparatus. FIG. 11 is a front view of the second modification of the serving apparatus. FIG. 12 is a front view of the third modification of the serving apparatus. Figure [Explanation of symbols]
2 Organic Waste Treatment System 4 Pit 5 Conveyor 6 Crusher 7 Soil Deodorizing Units 10, 11 Kneading and Serving Machines 12-18 Conveyor 19 Work Area 20, 21 Shaking Machine 22 Conveyor 24 Pallet Automatic Warehouse 25 Traveling Route 26 Stacker Crane 28, 29 Racks 31-34 Station 35 Hopper 36, 37 Air-conditioning equipment 40 Sieve / Sorting machine 42 Case automatic warehouse 44 Stacker crane 45, 46 Rack 48 Station 50 Flat place 52 Garbage case 53 Garbage 54 Processing base material case 55 Processing Base material 56 Pallet 57 Kneaded material 60 Input part 62 Crushing / input part 64 Kneading part 65 Screw conveyor 66 Collapsing surface 68 Nozzle 70 Hole 72 Hopper 73 Swing conveyor 74 Dropping hole 80 Reverse input machine 82 Hopper 84 Sieve 86 Hopper 88 Meter 89 Duct 90 Foreign object container 1 00 Formwork 101 Edges 102 to 106 Conveyor 108 Lifter 110 Inverter 112 Arm 114 Chuck 116 Upper chuck 118 Projection member 120 Molding member 122 Upper part 124 Side face 125 Brim 126 Both ends 128 Cylinder 130 Molding member 132 Cylinder 134 Vibration source

Claims (2)

微生物を含有する処理母材を有機廃棄物と混練するための混練手段と、該混練物を所定期間保管して熟成するための倉庫とを設けて、熟成した混練物を次の有機廃棄物との混練用の処理母材として前記混練手段へ供給するようにした有機廃棄物処理システムであって、
前記混練手段から混練物を投入するための型枠と、該型枠を反転させて、型枠に応じた形状で混練物をパレット上に盛り付けるための反転手段、とを設けたことを特徴とする有機廃棄物処理システム。
A kneading means for kneading the treatment base material containing microorganisms with organic waste and a warehouse for storing and aging the kneaded product for a predetermined period of time are provided, and the aged kneaded product is used as the next organic waste. An organic waste treatment system for supplying to the kneading means as a processing base material for kneading,
A mold for feeding the kneaded material from the kneading means, and a reversing means for inverting the mold and placing the kneaded material on a pallet in a shape corresponding to the mold, Organic waste treatment system.
前記反転手段では、パレットを型枠上に載せた状態から、パレット上に型枠が載った状態へと、パレットと型枠とを一体に反転させるようにしたことを特徴とする、請求項1の有機廃棄物処理システム。In the reversing unit, from a state in which loaded pallets onto the mold, to a state in which the mold is resting on a pallet, characterized in that the the pallet and mold so as to invert integrally claim 1 Organic waste treatment system.
JP2001166163A 2001-06-01 2001-06-01 Organic waste treatment system Expired - Fee Related JP4324835B2 (en)

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