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JP4324836B2 - Organic waste treatment system - Google Patents
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JP4324836B2 - Organic waste treatment system - Google Patents

Organic waste treatment system Download PDF

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JP4324836B2
JP4324836B2 JP2001166165A JP2001166165A JP4324836B2 JP 4324836 B2 JP4324836 B2 JP 4324836B2 JP 2001166165 A JP2001166165 A JP 2001166165A JP 2001166165 A JP2001166165 A JP 2001166165A JP 4324836 B2 JP4324836 B2 JP 4324836B2
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organic waste
base material
pallet
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JP2002355651A (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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
    • 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
    • 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
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/78Recycling of wood or furniture waste

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  • Processing Of Solid Wastes (AREA)
  • Combined Means For Separation Of Solids (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処理システムに関する。
【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自動倉庫とを設けて、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次廃棄物や悪臭の発生が少なく、かつ処理母材を繰り返して使用できるシステムを提供することにある。
この発明での追加の課題は、パレットに盛り付けた混練物からの悪臭を抑制し、かつ熟成を速めながら、処理母材を循環使用できるようにすることにある。
請求項3の発明での追加の課題は、計量した熟成済みの混練物の取り扱いや保管を容易にすることにある。
【0005】
【発明の構成】
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、該混練物を盛り付けたパレットを所定期間保管して熟成するための自動倉庫とを設けて、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、パレット上に盛り付けた前記混練物に処理母材を振り掛けるための手段と、熟成済みの混練物から異物を除去するための手段と、異物を除去した混練物を、少なくとも混練用と振掛用とに計量するための手段とを設けたことを特徴とする。
【0007】
またこの発明では、パレット上に盛り付けた前記混練物に処理母材を振り掛けるための手段を設けると共に、前記計量手段では、少なくとも混練用と振掛用とに計量する。
特に好ましくは、前記計量手段では、混練用、振掛用、及びその他用途用に計量する(請求項2)。
【0008】
また好ましくは、計量した熟成済みの混練物を保管するためのバケット倉庫を設ける(請求項3)
【0009】
【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、自動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。熟成は自動倉庫で行えるので、比較的狭いスペースに多量の混練物を保管でき、かつ倉庫内での作業をほぼ自動化できるので、発酵に伴う高温・多湿・高CO2の環境で人が作業をする必要が少なくなる。また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。さらにパレットに盛り付けて熟成するので、通気性が高く、切り返しが不要で、発酵期間が短く、悪臭も少なくなる。さらにこの発明では、熟成した混練物から異物を除去し計量して次の処理母材として再使用するので、処理母材に異物が堆積することが無く、また処理母材の量を管理できる(請求項1)。
【0011】
この発明ではさらに、パレットに盛り付けた混練物に処理母材を振り掛けるので、悪臭をさらに少なくし、ハエや虫などが寄りつくのを防止し、かつ熟成を速めることができる。そして混練用と振掛用とに計量し、熟成した混練物を的確に循環使用できる。
請求項2の発明では、混練用と振掛用とその他用途用とに計量するので、過剰分をコンポスト等の他の用途に振り分けて、循環使用から除くことができる。
【0012】
請求項3の発明では、バケット倉庫で計量した熟成済みの混練物を保管するので、その取り扱いや保管が容易になる。
【0013】
【実施例】
図1〜図8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。
【0014】
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。
【0015】
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。
【0016】
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・計量機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。
【0017】
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。
【0018】
篩・計量機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、振掛用、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・計量機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。
【0019】
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。
【0020】
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。
【0021】
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。
【0022】
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の搬送方向とが直交していればよい。
【0023】
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、混練盛り付け後や振り掛け後に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。
【0024】
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。
【0025】
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。
【0026】
図4に篩・計量機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ガラス片、セラミック片、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。この時、異物の重量を測定すると、廃棄物の出所と照合することにより、異物の混入源を推定できる。また篩84に上ないしは斜め上向きの気流を加えると、ポリエチレン袋の断片などのシート状のプラスチックは、他の混練物との比重の差によって流されて除去することができる。
【0027】
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る。実施例では、計量器88の付近に、マグネットローラ91とベルト92とを用いた磁選機を設け、篩84を通過した目の細かい金属片をダクト93へ落下させて除去する。金属片以外のものはマグネットローラ91に吸着されないので落下位置が異なり、ダクト93ではなく、ケース54に落下する。磁選機の種類や設置位置は任意で、例えばピットや破砕機への有機廃棄物の投入部に設けても良く、また磁選機を設けなくても良い。
【0028】
ここでは振動篩と磁選機とで異物を除去することを示したが、これ以外に図5,図6に示すように、比重の差を用いた選別機(以下比重選別機という)を用いても良く、あるいは振動篩等の篩と比重選別機とを併用しても良い。例えば、振動篩等の篩と磁選機と比重選別機の3種を併用する、あるいは篩と比重選別機の一方と磁選機とを併用することが好ましい。
【0029】
図5の100は回転篩で、101は回転するドラムで、側面のメッシュから異物を排出し、102は投入口、103は排出部である。図示しない機構によりドラム101を回転させると、投入された混練物は比重により分離され、比重の大きい金属片やガラス片、セラミック片はドラム101の側面から排出され、比重の小さい熟成済みの混練物(処理母材)は例えば気流に乗って排出部103から排出される。
【0030】
図6はサイクロン110を用いた比重選別機の例で、111は本体で、羽根112を内蔵し、113は投入口、114は開閉自在の異物出口、115は排出口である。投入口113から吹き込まれた混練物は、回転する羽根112で接線方向に振りとばされ、本体111の内壁に衝突する。比重の大きい金属片やガラス片、セラミック片は内壁に衝突して運動エネルギーを失うと沈降して、異物出口114上に堆積し、熟成済みの混練物は比重が小さいので、気流に乗って排出口115から排出される。
【0031】
異物を除去され計量された混練物は処理母材ケース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。
【0032】
図7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。
【0033】
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。
【0034】
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、生ゴミの場合、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)などで増量する。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。盛り付け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。
【0035】
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。おが屑は植物繊維分の例で、バーク(木材の皮)、稲藁、麦藁、籾殻などでもよい。
【0036】
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。
【0037】
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有機廃棄物の熟成を終えることができる。
【0038】
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。
【0039】
熟成済みの混練物を篩・計量機で篩に掛けて異物を除去する。異物として問題になるのは、プラスチック類、ガラスやセラミック類、金属類で、篩を通すことにより、これらの内で篩の目よりも粗いものを除去できる。次にマグネットローラなどを用いた磁選機により、篩を通過した金属の細粒を除去できる。また回転篩やサイクロンなどの比重選別機を用いると、ガラス片やセラミック片等を除去できる。このようにして異物を除去し、都市部のゴミを処理してもコンポストとして使用できるようにし、かつ処理母材を繰り返し使用しても異物が堆積しないようにする。なおコンポスト生産を行わない場合、異物の除去は複数回の処理に対して1回行うようにしても良い。
【0040】
篩を通過するなどにより異物を除去した混練物を、回転計量器などの計量器で計量し、次の混練用,振掛用に所定量ずつ計量して、ケース自動倉庫で保管する。この所定量は、次の混練用が例えば1000リットル、振掛用が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。
【0041】
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、混練用と振掛用とで、合計量を1100リットルにする。そして混練用や振掛用などの、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%を混練用や振掛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。
【0042】
図7に示したように、処理母材は他のパレットに由来する処理母材とは混合せずにパレット単位で運用し、活性の低下を微生物の追加で補い、例えば活性液や培養後未使用の処理母材などの形態で、微生物を追加する。そして過剰分をコンポスト生産などに振り当てる。他のパレットのからの処理母材と混合せずに、パレット単位で処理母材を運用することにより、処理母材が汚染あるいは劣化、変質した際の被害を最小限にでき、処理母材の交換時期の管理も的確にできる。
【0043】
図8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。
【0044】
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。
【0045】
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。
【0046】
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。
【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・計量機を示す側面図
【図5】 変形例で用いた回転篩を示す斜視図
【図6】 第2の変形例で用いたサイクロンを示す斜視図
【図7】 実施例での、生ゴミの循環消滅サイクルを示す工程図
【図8】 実施例での、コンポスト製造工程を示す工程図
【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・計量機
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
89,93 ダクト
90 異物容器
91 マグネットローラ
92 ベルト
100 回転篩
101 ドラム
102 投入口
103 排出部
110 サイクロン
111 本体
112 羽根
113 投入口
114 異物出口
115 排出口
[0001]
[Field of the Invention]
The present invention relates to a processing system for organic waste such as raw garbage, and more particularly to a processing 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 provided a kneading means for kneading the treatment base material containing microorganisms with organic waste, and an automatic warehouse for storing and aging the kneaded material for a predetermined period of time. An organic waste treatment system was filed (Japanese Patent Application No. 2001-18547) in which a product is supplied to the kneading means as a processing base material for kneading with the next organic waste.
[0004]
[Problems of the Invention]
The basic object of the present invention, organic waste can efficiently processed in a relatively narrow space, is to provide a system that can be used repeatedly secondary waste and generation of bad smell little, and processing the base material .
An additional object of the present invention is to make it possible to circulate and use the treated base material while suppressing malodor from the kneaded material placed on the pallet and accelerating the aging.
An additional problem in the invention of claim 3 is to facilitate handling and storage of the weighed and aged kneaded material.
[0005]
[Structure of the invention]
The present invention is provided with kneading means for kneading a treatment base material containing microorganisms with organic waste, and an automatic warehouse for storing and aging the pallet on which the kneaded material is placed for a predetermined period. An organic waste processing system in which a kneaded product is supplied to the kneading means as a processing base material for kneading with the next organic waste, and the processing base material is sprinkled on the kneaded material placed on a pallet. and means for, and means for removing foreign matters from the ripened kneaded product, the kneaded product to remove foreign matters, and characterized in that a means for metering to the use and for at least a kneading Fukaka To do.
[0007]
In the present invention, means for sprinkling the treated base material on the kneaded material placed on the pallet is provided, and the measuring means measures at least for kneading and for shaking .
Particularly preferably, the weighing means weighs for kneading, shaking, and other uses .
[0008]
Preferably, a bucket warehouse for storing the weighed and aged kneaded material is provided (claim 3) .
[0009]
[Operation and effect of the invention]
In the present invention, a processing base material containing microorganisms and organic waste are kneaded, placed on a pallet, stored in an automatic 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. Aging can be done in an automated warehouse, so a large amount of kneaded material can be stored in a relatively small space, and the work in the warehouse can be almost automated, so people work in the high-temperature, high-humidity, high-CO2 environment associated with fermentation. Less need. Further, since organic waste is digested by microorganisms and becomes the next processing base material, the generation of secondary waste is reduced. Furthermore, since it is aged on a pallet, it is highly breathable, does not require reversal, has a short fermentation period, and has less odor. Furthermore, in the present invention, the foreign matter is removed from the aged kneaded material and weighed and reused as the next processing base material, so that no foreign matter is deposited on the processing base material and the amount of the processing base material can be controlled ( Claim 1).
[0011]
Furthermore, in the present invention, since the treated base material is sprinkled on the kneaded material placed on the pallet, it is possible to further reduce malodor, prevent fly and insects from approaching, and accelerate aging. Then, the kneaded material that has been aged and weighed for kneading and shaking can be used in an accurate manner.
In the invention of claim 2, since the measurement is performed for kneading, for shaking, and for other uses, the excess can be distributed to other uses such as compost and removed from circulation use.
[0012]
In the invention of claim 3, since the aged kneaded material weighed in the bucket warehouse is stored, it is easy to handle and store it.
[0013]
【Example】
The outline | summary of the processing system of organic wastes, such as garbage, is shown in FIGS. 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 (for example, raw garbage such as vegetables) introduced from the upper part is sandwiched between crushing means such as a pair of rollers and a pair of gears, and dropped while crushing, and the dropped organic waste The product is received in an appropriate case and conveyed to the next kneading and setting 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.
[0014]
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.
[0015]
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.
[0016]
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 / metering machine 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.
[0017]
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.
[0018]
The sieve / weighing machine 40 receives the pallet on which the aged kneaded material is placed from the pallet automatic warehouse 24, separates the kneaded material from the pallet, 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 into a predetermined amount by a measuring instrument for subsequent use such as kneading, shaking, compost production or disposal of organic waste. 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 connecting the sieve / weighing machine 40 and the case automatic warehouse 42, and includes a conveyor for carrying the case. Yes.
[0019]
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.
[0020]
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.
[0021]
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.
[0022]
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 orthogonal.
[0023]
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.
[0024]
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.
[0025]
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.
[0026]
4 shows the configuration of the sieve / meter 40, the pallet 56 on which the aged kneaded material 57 is loaded from the station 33 by a conveyor is carried out from the automatic pallet warehouse. 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 the metal piece, glass piece, ceramic piece, plastic piece, etc. that cannot pass through the mesh of the sieve are removed and discharged from the duct 89 to the foreign material container 90. At this time, if the weight of the foreign matter is measured, the source of the foreign matter can be estimated by comparing with the source of the waste. Further, when an upward or obliquely upward airflow is applied to the sieve 84, the sheet-like plastic such as a fragment of the polyethylene bag can be removed by flowing due to the difference in specific gravity from other kneaded materials.
[0027]
The kneaded material that has passed through the sieve 84 enters the measuring device 88 from the hopper 86, and is subdivided into units for next kneading, next shaking, compost production, and the like. In the embodiment, a magnetic separator using a magnet roller 91 and a belt 92 is provided in the vicinity of the measuring device 88, and fine metal pieces that have passed through the sieve 84 are dropped into the duct 93 and removed. Things other than metal pieces are not attracted by the magnet roller 91, so the drop positions are different, and they fall to the case 54 instead of the duct 93. The type and installation position of the magnetic separator are arbitrary, and may be provided, for example, in an input portion of organic waste to a pit or a crusher, or the magnetic separator may not be provided.
[0028]
Here, it has been shown that foreign matters are removed with a vibrating sieve and a magnetic separator, but in addition to this, as shown in FIGS. 5 and 6, a sorter using a difference in specific gravity (hereinafter referred to as a specific gravity sorter) is used. Alternatively, a sieve such as a vibrating sieve and a specific gravity sorter may be used in combination. For example, it is preferable to use a combination of a sieve such as a vibrating sieve, a magnetic separator, and a specific gravity sorter, or a combination of a sieve, a specific gravity sorter, and a magnetic separator.
[0029]
In FIG. 5, reference numeral 100 denotes a rotary sieve, 101 denotes a rotating drum, which discharges foreign matter from the side mesh, 102 denotes a loading port, and 103 denotes a discharge unit. When the drum 101 is rotated by a mechanism (not shown), the charged kneaded material is separated by the specific gravity, and the high specific gravity metal piece, glass piece, and ceramic piece are discharged from the side surface of the drum 101, and the aged kneaded material having a low specific gravity. The (processing base material) is discharged from the discharge unit 103, for example, on an airflow.
[0030]
FIG. 6 shows an example of a specific gravity sorter using a cyclone 110. Reference numeral 111 denotes a main body, which includes a blade 112, 113 is an inlet, 114 is an openable / closable foreign substance outlet, and 115 is an outlet. The kneaded material blown from the inlet 113 is swung in the tangential direction by the rotating blade 112 and collides with the inner wall of the main body 111. Metal pieces, glass pieces, and ceramic pieces with large specific gravity collide with the inner wall and lose kinetic energy, sink and deposit on the foreign substance outlet 114. It is discharged from the outlet 115.
[0031]
The kneaded material from which foreign substances have been removed and weighed is subdivided into a processing base material case 54, and is stored in the case automatic warehouse 42 by the conveyor of the station 48. 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.
[0032]
FIG. 7 shows an organic waste treatment process in the example. 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.
[0033]
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.
[0034]
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, for example, about 150 kg. In the case of garbage, 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. If the processing base material is insufficient, increase the amount with sawdust, rice straw, wheat straw, rice husk, bark (wood husk). Further, 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 that has been arranged is, for example, 40 cm, and the thickness is preferably about 10 cm to 80 cm, particularly preferably about 20 to 60 cm in order to ensure air permeability and perform uniform fermentation without turning over. And
[0035]
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. Sawdust is an example of plant fiber, and may be bark (wood peel), rice straw, wheat straw, rice husk or the like.
[0036]
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.
[0037]
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. Therefore, aging of a large amount of organic waste can be completed uniformly and in a short time.
[0038]
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.
[0039]
The aged kneaded material is sieved with a sieve / measuring machine to remove foreign matter. As a foreign matter, plastics, glass, ceramics, and metals are problematic. By passing through a sieve, those coarser than the mesh of the sieve can be removed. Next, the fine metal particles that have passed through the sieve can be removed by a magnetic separator using a magnet roller or the like. If a specific gravity sorter such as a rotary sieve or cyclone is used, glass pieces, ceramic pieces and the like can be removed. In this way, the foreign matter is removed so that it can be used as compost even if the waste in the urban area is treated, and the foreign matter is not accumulated even if the processing base material is repeatedly used. If compost production is not performed, the removal of foreign matter may be performed once for a plurality of processes.
[0040]
The kneaded material from which foreign matter has been removed by passing through a sieve is weighed with a measuring instrument such as a rotary measuring instrument, 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 and 100 liters for shaking, 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 To do.
[0041]
When extracting the matured kneaded product for other uses such as compost production, add almost the same amount of fiber such as sawdust to the total amount of kneading and sprinkling for 1100 liters. To do. And the ratio of the circulation use in the organic waste treatment system for kneading or shaking is, for example, 50% or more, preferably 70% or more, particularly preferably 70 to 90%. If there is no other use such as compost production, 100% is recycled for kneading or for shaking. 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.
[0042]
As shown in FIG. 7, the processing base material is operated in units of pallets without being mixed with processing base materials derived from other pallets, and the decrease in activity is compensated by the addition of microorganisms. Add microorganisms in the form of processing matrix for use. The excess is then allocated to compost production. By operating the processing base material in units of pallets without mixing with the processing base material from other pallets, the damage when the processing base material is contaminated, deteriorated or altered can be minimized. Management of the replacement time can also be performed accurately.
[0043]
When the compost production process is shown in FIG. 8, 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.
[0044]
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. .
[0045]
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.
[0046]
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.
[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. FIG. 4 is a side view showing the sieve / meter used in the embodiment. FIG. 5 is a perspective view showing the rotating sieve used in the modification. FIG. 6 is a perspective view showing the cyclone used in the second modification. FIG. 7 is a process diagram showing a cycle for annihilation of garbage in the embodiment. FIG. 8 is a process diagram showing a compost manufacturing process in the embodiment.
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 Sprinkler 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 / weigher 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 section 62 Crushing input section 64 Kneading section 65 Screw conveyor 66 Collapse surface 68 Nozzle 70 Hole 72 Hopper 73 Swing conveyor 74 Drop hole 80 Reverse input machine 82 Hopper 84 Sieve 86 Hopper 88 Measuring instrument 89 , 93 Duct 90 Foreign material container 91 Magnet roller 92 Belt 100 Rotary sieve 101 Drum 102 Input port 103 Discharge unit 110 Cyclone 111 Main body 112 Blade 113 Input port 114 Foreign matter outlet 115 Discharge port

Claims (3)

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、該混練物を盛り付けたパレットを所定期間保管して熟成するための自動倉庫とを設けて、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、
パレット上に盛り付けた前記混練物に処理母材を振り掛けるための手段と、熟成済みの混練物から異物を除去するための手段と、異物を除去した混練物を、少なくとも混練用と振掛用とに計量するための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 an automatic warehouse for storing and aging the pallet on which the kneaded material is placed for a predetermined period of time are provided. An organic waste treatment system for supplying to the kneading means as a processing base material for kneading with organic waste,
Means for sprinkling the treatment base material to the kneaded material Serve on the pallet, and means for removing foreign matters from the ripened kneaded product, the kneaded product to remove foreign matters, and for use at least a kneading Fukaka And an organic waste treatment system, characterized in that a measuring means is provided.
前記計量手段では、混練用、振掛用、及びその他用途用に計量す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。2. The organic waste treatment system according to claim 1 , wherein the weighing means is used for kneading, shaking, and other uses. 計量した熟成済みの混練物を保管するためのバケット倉庫を設けたことを特徴とする、請求項1または2の有機廃棄物処理システム。The organic waste treatment system according to claim 1 or 2 , further comprising a bucket warehouse for storing the weighed and aged kneaded material.
JP2001166165A 2001-06-01 2001-06-01 Organic waste treatment system Expired - Fee Related JP4324836B2 (en)

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