JP4789113B2 - Livestock manure processing system and method - Google Patents

Livestock manure processing system and method Download PDF

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JP4789113B2
JP4789113B2 JP2006055314A JP2006055314A JP4789113B2 JP 4789113 B2 JP4789113 B2 JP 4789113B2 JP 2006055314 A JP2006055314 A JP 2006055314A JP 2006055314 A JP2006055314 A JP 2006055314A JP 4789113 B2 JP4789113 B2 JP 4789113B2
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雄二 保田
隆夫 橋爪
洋 水谷
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Mitsubishi Heavy Industries Environmental and Chemical Engineering Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/20—Sludge processing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
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    • Y02W30/78—Recycling of wood or furniture waste

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Description

本発明は、家畜糞尿とし尿系汚水を標準脱窒処理設備にて混合処理する技術に関し、特に処理負荷の増大に対応できるとともに、内分泌攪乱化学物質や変異原性物質等の難分解性物質を除去して処理水質を向上させることができる家畜糞尿処理システム及び方法に関する。   The present invention relates to a technology for mixing livestock manure and urine sewage in a standard denitrification treatment facility, and in particular, it can cope with an increase in processing load, and is also capable of treating persistent substances such as endocrine disrupting chemicals and mutagenic substances. The present invention relates to a livestock manure treatment system and method that can be removed to improve the quality of treated water.

従来、家畜糞尿の処理においては、自宅敷地内の野積みや素堀堆積などの自家処理、或いは需要があれば液肥としての利用などが主流で、本格的な専用処理施設は少ない。家畜糞尿の専用処理施設の設置は、畜産業者への経済的負担が大きいため普及が妨げられているのが現状である。また、実際に処理をされている家畜糞尿は未だ少なく、大半は未処理のまま河川等の環境水系に流出しており重大な環境汚染源となっている。特に、内分泌攪乱化学物質や変異原性物質等の難分解性物質は自然界では容易に分解され難く、人体や環境に悪影響を与えることから問題となっている。このような状況から法整備もなされつつあるが、経済性が障害となって依然として処理は進んでいない。   Conventionally, in the processing of livestock manure, self-processing such as field stacking and moat deposition in home premises, or use as liquid fertilizer if there is a demand is mainstream, and there are few full-scale dedicated processing facilities. The installation of dedicated treatment facilities for livestock manure is currently hindered by the large economic burden on livestock producers. In addition, livestock manure that is actually treated is still small, and most of them are discharged into the environmental water system such as rivers without being treated, which is a serious source of environmental pollution. In particular, persistent substances such as endocrine disrupting chemicals and mutagenic substances are not easily decomposed in the natural world and are problematic because they adversely affect the human body and the environment. Legislation is being developed from such a situation, but the processing is still not progressing due to economic obstacles.

これに対して、家畜糞尿を、処理能力に余裕のある近隣し尿処理施設に搬入してし尿とともに混合処理する技術が、非特許文献１に開示されている。これは、家畜糞尿を性状が類似したし尿を既存のし尿処理施設にて処理するものである。
ここで、従来のし尿系汚水の処理方法を示す。し尿系汚水の処理に用いられる脱窒処理設備として、現在最も多く採用されている標準脱窒処理設備がある。標準脱窒処理設備（非特許文献２、特許文献１参照）は、図４に示すように上流側から順に、無酸素状態下で撹拌が行われる第１撹拌槽１、散気管７Ａを備え曝気が行われる第１曝気槽２、メタノール等の水素供与体が添加されて撹拌が行われる第２撹拌槽３、散気管７Ｂを備え曝気が行われる再曝気槽４、沈殿槽５が直列に配設された構成となっている。し尿系汚水は後段の沈殿槽５からの返送汚泥及び第１曝気槽２からの循環液と混合されて第１撹拌槽１に導入されて脱窒反応が行われ、該第１撹拌槽１からの処理液は希釈水とともに第１曝気槽２に導入されて硝化反応が行われる。第１曝気槽２からの硝化液の大部分は第１撹拌槽１に返送され、残余は第２撹拌槽３に送られ、再度脱窒反応が行われて再曝気槽４を経た後に沈殿槽５にて固液分離される。 On the other hand, Non-Patent Document 1 discloses a technique in which livestock manure is brought into a nearby urine treatment facility with sufficient processing capacity and mixed with urine. In this method, livestock manure has similar properties and urine is processed at an existing human waste treatment facility.
Here, a conventional method for treating human waste sewage will be described. As a denitrification treatment facility used for the treatment of human waste sewage, there is a standard denitrification treatment facility that is currently most frequently used. As shown in FIG. 4, the standard denitrification treatment facility (see Non-Patent Document 2 and Patent Document 1) is provided with a first stirring tank 1 and an aeration pipe 7A that are stirred in an oxygen-free state in order from the upstream side. A first aeration tank 2 in which a hydrogen donor such as methanol is added and agitation is performed, a re-aeration tank 4 in which aeration pipe 7B is provided and aeration is performed, and a precipitation tank 5 are arranged in series. It has a configuration. The human waste sewage is mixed with the return sludge from the subsequent settling tank 5 and the circulating liquid from the first aeration tank 2 and introduced into the first stirring tank 1 to perform a denitrification reaction. The treatment liquid is introduced into the first aeration tank 2 together with the dilution water, and the nitrification reaction is performed. Most of the nitrification liquid from the first aeration tank 2 is returned to the first agitation tank 1, and the remainder is sent to the second agitation tank 3, and after denitrification is performed again and after passing through the re-aeration tank 4, the precipitation tank 5 is subjected to solid-liquid separation.

図４の標準脱窒処理設備を備えた処理システムの一例を図５に示す。し尿系汚水は、スクリーン１１にてし渣が除去された後、脱窒処理設備に導かれて脱窒処理が行われる。脱窒後の処理水は高度処理設備に送られ、凝集沈殿装置１２、オゾン処理装置１３、ろ過装置１４等にて高度処理が施された後に放流水として排出される。
一方、沈殿槽５にて分離された余剰汚泥、及びスクリーン１１にて捕捉されたし渣は汚泥処理設備に送られる。汚泥処理設備では、脱水装置１５にて脱水した後、乾燥装置１６にて乾燥され、焼却設備１７にて焼却処理される。 An example of the processing system provided with the standard denitrification processing equipment of FIG. 4 is shown in FIG. Human waste sewage is denitrified by being guided to a denitrification facility after the residue from the screen 11 is removed. The treated water after denitrification is sent to an advanced treatment facility, and after being subjected to advanced treatment by the coagulating sedimentation device 12, the ozone treatment device 13, the filtration device 14, etc., it is discharged as discharge water.
On the other hand, the excess sludge separated in the sedimentation tank 5 and the residue captured by the screen 11 are sent to a sludge treatment facility. In the sludge treatment facility, after dewatering by the dewatering device 15, it is dried by the drying device 16 and incinerated by the incineration facility 17.

特開２００１−０１７９９２号公報JP 2001-017992 A 「既存し尿処理施設を利用した畜尿処理の可能性について」、社団法人日本有機資源協会“Possibility of livestock urine treatment using existing urine treatment facility”, Japan Organics Resource Association 「汚泥再生処理センター等施設設備の計画・設計要領」、社団法人全国都市清掃会議、ｐ．１３１“Planning and Design Procedures for Facility Facilities such as Sludge Recycling Center”, National Urban Cleaning Council, p. 131

しかし、上記したようなし尿処理施設にて家畜糞尿を受け入れる場合、家畜糞尿発生量の多い地域の多くはし尿処理施設に余力がなく、また余力のあるし尿処理施設でも受入可能の家畜糞尿量は高々２０〜３０ｍ３／日と試算しており極めて少なく処理可能な家畜糞尿量は極めて少ないため、合併処理を行うことには問題がある。
従って、既存の施設を利用して、より多くの家畜糞尿を処理する技術は喫緊の課題として待望されている。し尿と家畜糞尿とは性状も類似しておりし尿処理施設での受入れがもっとも簡単である。余力のないし尿処理施設、すなわち設計負荷通りの負荷で運転されているし尿処理施設に家畜糞尿を受入れる場合、水槽容量増加など施設の拡張がなく、また消費エネルギーの増加が最小限で受入れ得る施策が必要不可欠である。 However, when accepting livestock manure at the human waste processing facility as described above, the amount of livestock excreta that can be received at the human waste processing facility where there is no surplus in many areas where the amount of livestock excreta generation is large, There is a problem in performing the merged process because the amount of livestock excreta that can be treated is extremely small because it is estimated to be 20-30 m 3 / day at most.
Therefore, a technique for processing a larger amount of livestock excreta using existing facilities is awaited as an urgent issue. Human waste and livestock manure have similar properties and are the easiest to accept in a sewage treatment facility. Measures that can be accepted with minimal increase in energy consumption when there is no expansion of facilities such as an increase in tank capacity when receiving livestock excreta into a urine treatment facility that is operating with a surplus or urine treatment facility, that is, operating as designed. Is indispensable.

また家畜糞尿やし尿は、内分泌攪乱化学物質や変異原性物質の主要な発生源としても知られているが、水源保全が叫ばれる中、水道水質安全性維持の観点からこれらに対策も同時に強化しなければならない。
従って、本発明は上記従来技術の問題点に鑑み、余力のないし尿処理施設であっても施設拡張を殆ど行うことなく家畜糞尿を受け入れることができ、且つ消費エネルギー量の増大を最小限に抑えてより多くの家畜糞尿を受入れ、さらに水質安全性対策も万全な家畜糞尿処理システム及び方法を提供することを目的とする。 Livestock manure and human waste are also known as major sources of endocrine disrupting chemicals and mutagenic substances. However, while water source conservation is screamed, measures are being strengthened simultaneously from the viewpoint of maintaining tap water quality safety. Must.
Therefore, in view of the above-described problems of the prior art, the present invention can accept livestock manure with little capacity expansion even if it is a surplus or urine treatment facility, and minimizes an increase in energy consumption. It is an object of the present invention to provide a system and method for treating livestock manure that accepts more livestock manure and also has a water quality safety measure.

そこで、本発明はかかる課題を解決するために、
し尿系汚水を処理する標準脱窒処理設備を備え、該標準脱窒処理設備は上流側から順に無酸素状態に保持された第１撹拌槽と、第１曝気手段を備えた第１曝気槽と、前記第１撹拌槽より小容積で無酸素状態に保持された第２撹拌槽と、第２曝気手段を備えた再曝気槽とが直列配設された家畜糞尿処理システムにおいて、
木質バイオマスを熱分解する熱分解設備を備え、該熱分解設備にて発生した熱分解残渣の少なくとも一部を前記標準脱窒処理設備の何れかの槽に投入するとともに、
前記第１曝気手段を投げ込み型曝気装置とし、前記し尿系汚水とともに家畜糞尿を標準脱窒処理設備に投入し、該標準脱窒処理設備に希釈水を投入せずに脱窒処理を行うとともに、前記投げ込み型曝気装置は、酸素溶解効率２５％以上を有するドラフトチューブ式曝気装置若しくは回転空気分散式曝気装置であり、単位容積当りの酸素消費速度、酸素溶解効率を増大させることにより家畜糞尿の受け入れで増加した負荷を処理可能とするものであることを特徴とする。 Therefore, in order to solve this problem, the present invention provides:
A standard denitrification treatment facility for treating human waste sewage, the standard denitrification treatment facility being maintained in an oxygen-free state in order from the upstream side; and a first aeration tank provided with a first aeration means; In the livestock manure processing system in which the second agitation tank held in an oxygen-free state with a smaller volume than the first agitation tank and the re-aeration tank equipped with the second aeration means are arranged in series.
A thermal decomposition facility for thermally decomposing woody biomass is provided, and at least a part of the thermal decomposition residue generated in the thermal decomposition facility is put into any tank of the standard denitrification processing facility,
The first aeration means is a throw-in type aeration apparatus, and livestock manure is introduced into a standard denitrification treatment facility together with the human waste sewage, and denitrification treatment is performed without adding dilution water to the standard denitrification treatment facility , The throw-in type aeration apparatus is a draft tube type aeration apparatus or rotating air dispersion type aeration apparatus having an oxygen dissolution efficiency of 25% or more, and accepts livestock manure by increasing the oxygen consumption rate per unit volume and the oxygen dissolution efficiency. It is characterized in that it can process the increased load .

本発明によれば、大掛かりな施設拡張や改造を行う必要がなく、処理負荷を向上させることができ、家畜糞尿を同時に処理することが可能となるため、既存のし尿処理施設にも容易に適用することができる。
標準脱窒処理はもともと高い希釈倍率で設計されており水量対応能力が高いため、希釈水を投入せずに家畜糞尿を受け入れることで槽容積を増大させずに処理を行うことが可能となる。さらに、投げ込み型曝気装置で単位容積当りの酸素消費速度、酸素溶解効率を増大させることにより家畜糞尿の受け入れで増加した負荷を処理可能となる。また投げ込み型曝気装置は出し入れ自在であるため、容易に取り付けることができる。
また、このシステムの余剰敷地内または近隣に熱分解設備を設け、木質バイオマスを熱分解して発生した熱分解残渣を標準脱窒処理設備に供給することにより、内分泌攪乱化学物質や変異原性物質等の難分解性物質を吸着除去することができる。 According to the present invention, it is not necessary to carry out large-scale facility expansion or remodeling, the processing load can be improved, and livestock excreta can be processed at the same time, so that it can be easily applied to existing human waste processing facilities. can do.
Since the standard denitrification process is originally designed at a high dilution ratio and has a high water capacity capability, it is possible to perform the process without increasing the tank volume by receiving livestock manure without adding dilution water. Further, by increasing the oxygen consumption rate per unit volume and the oxygen dissolution efficiency with the throw-in type aeration apparatus, it becomes possible to handle the increased load due to the acceptance of livestock manure. Moreover, since the throw-in type aeration apparatus can be taken in and out, it can be easily attached.
In addition, by installing pyrolysis equipment in or near the surplus site of this system and supplying pyrolysis residues generated by pyrolyzing woody biomass to standard denitrification equipment, endocrine disrupting chemicals and mutagenic substances It is possible to adsorb and remove hardly decomposable substances such as.

また、前記熱分解設備からの熱分解ガスを燃料とする燃焼設備を設け、前記標準脱窒処理設備にて生じた余剰汚泥の少なくとも一部を前記燃焼設備にて燃焼することを特徴とする。
本発明では、家畜糞尿の受け入れにより増加した汚泥を熱分解ガスによって燃焼させることにより、外部から新たなエネルギーを投入することなく処理ができる。木質バイオマスの熱分解ガスは高カロリーであるため汚泥との混焼においては熱収支改善に大きく寄与することとなる。 In addition, a combustion facility that uses pyrolysis gas from the pyrolysis facility as a fuel is provided, and at least a part of excess sludge generated in the standard denitrification facility is combusted in the combustion facility.
In the present invention, the sludge that has increased due to the acceptance of livestock manure is burned with pyrolysis gas, so that treatment can be performed without introducing new energy from the outside. Since the pyrolysis gas of woody biomass is high in calories, the mixed combustion with sludge greatly contributes to the improvement of the heat balance.

また、前記熱分解設備からの熱分解ガスを燃料とする燃焼設備と、該燃焼設備の排熱を用いて発電を行う発電設備とを備えることを特徴とする。
これにより、システム内で利用される電力を本システム内で供給することができる。
さらに、前記標準脱窒処理設備の返送汚泥の少なくとも一部が導入され、前記発電設備若しくは前記燃焼設備の排熱により該返送汚泥を熱処理する熱処理装置を備えたことを特徴とする。
このように、返送汚泥を熱処理することにより、汚泥が可溶化されて脱窒処理が促進される。また、システム内で発生する排熱を利用する構成であるため、エネルギーの有効利用が可能となる。 Further, the present invention includes a combustion facility that uses the pyrolysis gas from the pyrolysis facility as a fuel, and a power generation facility that generates power using exhaust heat of the combustion facility.
Thereby, the electric power utilized in a system can be supplied in this system.
Furthermore, at least a part of the return sludge of the standard denitrification treatment facility is introduced, and a heat treatment apparatus for heat-treating the return sludge by exhaust heat of the power generation facility or the combustion facility is provided.
Thus, by heat-treating the returned sludge, the sludge is solubilized and the denitrification treatment is promoted. In addition, since the exhaust heat generated in the system is used, energy can be effectively used.

さらにまた、前記再曝気槽に浸漬膜を設置して固液分離を行うようにしたことを特徴とする。
このように、本実施例によれば浸漬膜の適用で槽内のＭＬＳＳ濃度が高く採れ、全体として余剰汚泥発生量が低減される。従って、家畜糞尿を受入れても汚泥の処理量が大幅に増大することがなく、既存の汚泥処理系でも十分対応できるようになる。 Furthermore, an immersion membrane is installed in the re-aeration tank to perform solid-liquid separation.
Thus, according to the present embodiment, the MLSS concentration in the tank can be increased by applying the immersion membrane, and the amount of excess sludge generation is reduced as a whole. Therefore, even if the livestock manure is received, the amount of sludge treated does not increase significantly, and the existing sludge treatment system can be sufficiently handled.

また、し尿系汚水を処理する標準脱窒処理設備にて家畜糞尿を混合処理する家畜糞尿処理方法において、
酸素溶解効率２５％以上を有するドラフトチューブ式曝気装置若しくは回転空気分散式曝気装置で、単位容積当りの酸素消費速度、酸素溶解効率を増大させることにより家畜糞尿の受け入れで増加した負荷を処理可能とする投げ込み型曝気装置を用意し、
前記標準脱窒処理設備に希釈水を投入せずに前記し尿系汚水及び前記家畜糞尿を脱窒処理し、該脱窒処理にて前記投げ込み型曝気装置により高酸素負荷で曝気するとともに、
木質バイオマスを熱分解して生成した熱分解残渣を前記標準脱窒処理設備に供給するようにしたことを特徴とする。
Moreover, in the livestock manure processing method which mixes livestock manure in the standard denitrification processing equipment which processes human waste sewage,
With a draft tube type aeration device or rotating air dispersion type aeration device having an oxygen dissolution efficiency of 25% or more, it is possible to handle the increased load due to the acceptance of livestock manure by increasing the oxygen consumption rate per unit volume and the oxygen dissolution efficiency Prepare a throw-in type aeration device
The human waste system of sewage and the manure is denitrified without introducing dilution water to the standard denitrification equipment, as well as aerated with high oxygenation by the immersion-type aerator at dehydration nitrogen treatment,
A pyrolysis residue produced by pyrolyzing woody biomass is supplied to the standard denitrification facility.

また、前記熱分解により発生した熱分解ガスを燃料として、前記標準脱窒処理設備にて生じた余剰汚泥の少なくとも一部を燃焼することを特徴とする。
さらに、前記熱分解により発生した熱分解ガスを燃焼させ、該燃焼の排熱を用いて発電を行うようにし、前記燃焼若しくは前記発電による排熱を用いて、前記標準脱窒処理設備の返送汚泥の少なくとも一部を熱処理することを特徴とする。 Moreover, at least a part of excess sludge generated in the standard denitrification treatment facility is combusted using the pyrolysis gas generated by the pyrolysis as a fuel.
Further, the pyrolysis gas generated by the pyrolysis is burned, and power is generated using the exhaust heat of the combustion, and the return sludge of the standard denitrification treatment facility is used using the exhaust heat from the combustion or the power generation. It is characterized by heat-treating at least a part of.

以上記載のごとく本発明によれば、処理能力に余力の無いし尿処理施設にて家畜糞尿を受け入れ混合処理するに際して、施設の拡張がほとんどなく、且つ消費エネルギー量の増大を最小限に抑えてより多くの家畜糞尿を受入れることができ、さらに内分泌攪乱化学物質や変異原性物質等の難分解性物質を除去可能であり、水質安全性対策も万全な家畜糞尿処理システム及び方法を提供することができる。   As described above, according to the present invention, when livestock manure is received and mixed in a urine treatment facility having no processing capacity, there is almost no expansion of the facility, and an increase in energy consumption is minimized. To provide a livestock manure treatment system and method that can accept a large amount of livestock manure, can remove persistent substances such as endocrine disrupting chemicals and mutagenic substances, and is fully water quality safe it can.

以下、図面を参照して本発明の好適な実施例を例示的に詳しく説明する。但しこの実施例に記載されている構成部品の寸法、材質、形状、その相対的配置等は特に特定的な記載がない限りは、この発明の範囲をそれに限定する趣旨ではなく、単なる説明例に過ぎない。
図１は本発明の実施例１に係る家畜糞尿処理システムの全体構成図、図２は本発明の実施例２に係る家畜糞尿処理システムの全体構成図、図３は投げ込み型曝気装置の構成を示し、（ａ）ドラフトチューブ式曝気装置の斜視図、（ｂ）は回転空気分散式曝気装置の斜視図である。 Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified, but are merely illustrative examples. Not too much.
FIG. 1 is an overall configuration diagram of a livestock manure processing system according to Embodiment 1 of the present invention, FIG. 2 is an overall configuration diagram of an animal livestock manure processing system according to Embodiment 2 of the present invention, and FIG. 3 is a configuration of a throw-in type aeration apparatus. (A) Perspective view of a draft tube type aeration apparatus, (b) is a perspective view of a rotating air dispersion type aeration apparatus.

本実施例では、標準脱窒素処理設備を用いてし尿系汚水と家畜糞尿を併合処理する技術であり、既存の設備を用いることが好ましい。
尚、ここで言う家畜糞尿とは牛糞尿、豚糞尿などであり、牛糞尿には肉牛糞尿、乳牛糞尿に区別される。受入れ方法としては糞を分離して尿のみ受入れる場合と糞・尿混合の場合とがある。また、し尿系汚水とはし尿、浄化槽汚泥を含む。 In the present embodiment, it is a technique for jointly treating human waste sewage and livestock manure using standard denitrification equipment, and it is preferable to use existing equipment.
The livestock manure mentioned here is cow manure, pig manure, etc., and cow manure is classified into beef cattle manure and dairy cattle manure. As a receiving method, there are a case where feces are separated and only urine is received, and a case where feces and urine are mixed. In addition, human waste sewage includes human waste and septic tank sludge.

図１に本発明の実施例１に係る家畜糞尿処理システムの全体構成図を示す。同図に示されるように本実施例１に係る処理システムは、し尿系汚水３０と家畜糞尿３１を主として生物処理により脱窒する（Ｉ）水処理系と、生物処理により発生した余剰汚泥を処理する（II）汚泥処理系と、木質バイオマスを熱分解して得られた熱分解ガスを用いて発電する（III）発電系と、から構成される。   FIG. 1 shows an overall configuration diagram of a livestock manure processing system according to Embodiment 1 of the present invention. As shown in the figure, the treatment system according to the first embodiment treats human waste sewage 30 and livestock manure 31 mainly by biological treatment (I) water treatment system, and treatment of excess sludge generated by biological treatment. (II) a sludge treatment system and (III) a power generation system that generates power using pyrolysis gas obtained by pyrolyzing woody biomass.

（Ｉ）水処理系は、し尿系汚水３０及び／又は家畜糞尿３１に含まれるし渣４０を分離除去するスクリーン２と、該スクリーン２を通過後のし尿系汚水３０及び家畜糞尿３１の被処理混合液が投入される脱窒素処理設備１と、該脱窒素処理設備１から排出される脱窒処理後の脱窒処理水が投入される凝集沈殿装置１２、オゾン処理装置１３、砂ろ過装置１４からなる高度処理設備と、を主要構成とする。
各装置の具体的構成において、スクリーン２は、細目スクリーンが好ましいがこれに限定されるものではなく、し渣４０を除去する装置であればよい。他には、スクリュープレス、遠心分離機等が挙げられ、これを適宜単独若しくは組み合わせて使用する。 (I) The water treatment system includes a screen 2 that separates and removes the residue 40 contained in the human waste sewage 30 and / or the livestock manure 31, and the human waste sewage 30 and the livestock manure 31 that have passed through the screen 2 A denitrification treatment facility 1 to which a mixed solution is introduced, and a coagulation sedimentation device 12, an ozone treatment device 13, and a sand filtration device 14 to which denitrification treatment water discharged from the denitrification treatment facility 1 is introduced. The main component is an advanced processing facility consisting of
In the specific configuration of each device, the screen 2 is preferably a fine screen, but is not limited to this, and any device that removes the residue 40 may be used. In addition, a screw press, a centrifuge, etc. are mentioned, These are used individually or in combination suitably.

脱窒処理設備１は除渣後の被処理混合液から窒素、ＢＯＤ等を除去する装置であり、その構成は後述する。
凝集沈殿装置１２は、無機系凝集剤や高分子系凝集剤等の凝集剤を添加してフロック化し、脱窒処理水中の懸濁物質を除去する装置である。
オゾン処理装置１３は、凝集処理水をオゾンと接触させて主にＣＯＤや色度成分等を酸化して除去する装置である。
本実施例では高度処理設備として以上の装置を例に挙げたが、他にも活性炭吸着塔や脱塩処理装置、消毒装置等を適宜組み合わせ用いる。 The denitrification treatment facility 1 is a device that removes nitrogen, BOD, and the like from the mixture to be treated after scouring, and the configuration thereof will be described later.
The coagulation sedimentation apparatus 12 is an apparatus for adding flocculants such as inorganic coagulants and polymer coagulants to form a floc and remove suspended substances in the denitrification water.
The ozone treatment apparatus 13 is an apparatus that mainly removes COD, chromaticity components, and the like by contacting the agglomerated treated water with ozone.
In the present embodiment, the above apparatus is taken as an example of advanced treatment equipment, but other combinations such as an activated carbon adsorption tower, a desalination treatment apparatus, and a disinfection apparatus are used as appropriate.

ここで、本実施例の特徴的構成である脱窒処理設備１０につき説明する。
脱窒処理設備１０は、図１に示すように上流側から順に、無酸素状態下で撹拌が行われる第１撹拌槽１、投げ込み型曝気装置６を備え高負荷曝気が行われる第１曝気槽２、メタノール等の水素供与体が添加されて撹拌が行われる第２撹拌槽３、散気管７を備え曝気が行われる再曝気槽４、沈殿槽５が直列に配設された構成となっている。
第１撹拌槽１は無酸素状態におかれ、撹拌手段を備えている。後段の第２撹拌槽３においても同様に無酸素状態で撹拌手段を供えているが、第１撹拌槽１は第２撹拌槽３より槽容量が大きく設計される。 Here, the denitrification equipment 10 which is a characteristic configuration of the present embodiment will be described.
As shown in FIG. 1, the denitrification treatment facility 10 includes, in order from the upstream side, a first agitation tank 1 in which agitation is performed in an oxygen-free state, and a first aeration tank in which a high-load aeration is performed. 2. A second agitation tank 3 in which a hydrogen donor such as methanol is added and agitation is performed, a re-aeration tank 4 in which aeration pipe 7 is provided and aeration is performed, and a precipitation tank 5 are arranged in series. Yes.
The first stirring tank 1 is in an oxygen-free state and includes stirring means. Similarly, the second stirring tank 3 in the subsequent stage is provided with stirring means in an oxygen-free state, but the first stirring tank 1 is designed to have a larger tank capacity than the second stirring tank 3.

第１曝気槽２には、図３（ａ）、（ｂ）に示される投げ込み型曝気装置６が設置されている。（ａ）はドラフトチューブ式曝気装置であり、ブロワ８から供給される空気をドラフトチューブを介して槽内に供給する構成となっている。（ｂ）は回転空気分散式曝気装置であり、ブロワ８から供給される空気を回転空気分散機６２から供給し、回転の遠心力により気泡を分散させる構成となっている。既存の標準脱窒処理設備を用いる場合には、既に設置されている散気管を取り外して投げ込み型曝気装置６を設置するか、若しくは散気管に加えて投げ込み型曝気装置６を追設するようにしてもよい。
家畜糞尿を混合する場合、第１曝気槽２の単位容積当りの有機物・窒素負荷が大きくなるので単位容積当りの酸素消費速度も大きくなり酸素溶解速度の大きい曝気装置が必要となる。また、酸素溶解効率も大きくないと曝気空気量が著しく増加するので酸素溶解効率の高いことが必要となる。散気管は酸素溶解効率が１０％なので、酸素溶解効率２５％以上を有する投げ込み型曝気装置６を設置することで処理効率が大幅に向上する。また、水中投込型は出入れ自在であるため、既存の設備を利用する場合であっても容易に取り付けられる。 In the first aeration tank 2, a throw-in type aeration apparatus 6 shown in FIGS. 3 (a) and 3 (b) is installed. (A) is a draft tube type aeration apparatus, and is configured to supply air supplied from the blower 8 into the tank via the draft tube. (B) is a rotating air dispersion type aeration apparatus, which is configured to supply air supplied from the blower 8 from the rotating air disperser 62 and disperse the bubbles by the centrifugal force of rotation. When using an existing standard denitrification treatment facility, the existing aeration tube is removed and the throwing type aeration device 6 is installed, or the throwing type aeration device 6 is additionally installed in addition to the diffusion tube. May be.
When mixing livestock manure, the organic matter / nitrogen load per unit volume of the first aeration tank 2 is increased, so that the oxygen consumption rate per unit volume is increased and an aeration apparatus having a high oxygen dissolution rate is required. Further, if the oxygen dissolution efficiency is not high, the amount of aerated air is remarkably increased, so it is necessary to have a high oxygen dissolution efficiency. Since the diffusion tube has an oxygen dissolution efficiency of 10%, the processing efficiency is greatly improved by installing the throwing type aeration apparatus 6 having an oxygen dissolution efficiency of 25% or more. Moreover, since the submerged-in type can be moved in and out, it can be easily attached even when existing facilities are used.

また、従来は第１曝気槽２には、被処理水の約５〜１０倍以上の希釈水を供給していたが、本実施例では第１曝気槽２及び他の槽においても希釈水を投入しない構成となっている。
再曝気槽４は散気管７が配設され、従来と同様の曝気が行われる。
沈殿槽５は、脱窒処理水を沈降分離により固液分離する装置である。 Further, conventionally, about 5 to 10 times or more of dilution water is supplied to the first aeration tank 2, but in this embodiment, the dilution water is also supplied to the first aeration tank 2 and other tanks. It is configured not to throw in.
The re-aeration tank 4 is provided with an air diffusing tube 7, and aeration similar to the conventional one is performed.
The settling tank 5 is a device for solid-liquid separation of the denitrified water by sedimentation.

し尿系汚水は後段の沈殿槽５からの返送汚泥及び第１曝気槽２からの循環液と混合されて第１撹拌槽１に導入され、該第１撹拌槽１にて硝化液中のＮＯｘ −を窒素ガスに転換する。この脱窒反応の結果、し尿系汚水中のＢＯＤの大部分は除去され、有機性窒素の殆どがＮＨ４ ＋に変換する脱窒反応が行われる。第１撹拌槽１からの混合液は第１曝気槽２に導入され、投げ込み型曝気装置６からの高負荷曝気により、残留するＢＯＤが除去されるとともにＮＨ４ ＋がＮＯｘ −に酸化される硝化反応が行われる。第１曝気槽２からの硝化液の大部分は、循環液３３として第１撹拌槽１に返送されるが、残余は第２撹拌槽３に導入される。第２撹拌槽３ではメタノールの添加により脱窒反応が促進され、さらに再曝気槽４にて散気管７からの曝気により窒素ガスの除去がなされる。再曝気槽４からの脱窒処理水は沈殿槽５にて固液分離され、分離された汚泥の少なくとも一部は返送汚泥３６として第１撹拌槽１に返送される。液側の脱窒処理水３４は後段の高度処理設備に送られる。 The human waste sewage is mixed with the return sludge from the subsequent settling tank 5 and the circulating liquid from the first aeration tank 2 and introduced into the first stirring tank 1, where NO x in the nitrification liquid is introduced. - a converted to nitrogen gas. As a result of this denitrification reaction, most of the BOD in human waste sewage is removed, and a denitrification reaction in which most of organic nitrogen is converted to NH 4 + is performed. The mixed liquid from the first agitation tank 1 is introduced into the first aeration tank 2, and residual BOD is removed and NH 4 + is oxidized to NO x − by high-load aeration from the throw-in type aeration apparatus 6. A nitrification reaction takes place. Most of the nitrifying liquid from the first aeration tank 2 is returned to the first stirring tank 1 as the circulating liquid 33, but the remainder is introduced into the second stirring tank 3. In the second agitation tank 3, the denitrification reaction is promoted by adding methanol, and the nitrogen gas is removed by aeration from the aeration tube 7 in the re-aeration tank 4. The denitrified water from the re-aeration tank 4 is solid-liquid separated in the sedimentation tank 5, and at least a part of the separated sludge is returned to the first stirring tank 1 as a return sludge 36. The liquid-side denitrification water 34 is sent to an advanced treatment facility at the subsequent stage.

（II）汚泥処理系は、前記脱窒処理後に固液分離した余剰汚泥３５を処理する脱水装置１５、乾燥装置１６、焼却設備１７と、を主要構成とし、水処理系のスクリーン１１にて捕捉されたし渣４０、及び沈殿槽５にて分離された余剰汚泥３５を処理する。
脱水装置１５は、遠心脱水機、加圧脱水機、ベルトプレス脱水機、多重円板脱水機、スクリュープレス脱水機等から適宜選択して用いる。
乾燥装置１６は、熱により水分を蒸発させる周知の装置で、直接乾燥、間接乾燥、真空乾燥等から選択して用いる。
焼却設備１７は、流動床式焼却炉、ストーカ式焼却炉等種々の設備が用いられる。
し渣４０及び余剰汚泥３５は、脱水装置１５にて脱水された後に乾燥装置１６にて乾燥され、焼却設備１７にて焼却処理される。また、コンポスト設備を具備する場合にはコンポスト処理してもよい。 (II) The sludge treatment system is mainly composed of a dewatering device 15, a drying device 16, and an incineration facility 17 for treating excess sludge 35 solid-liquid separated after the denitrification treatment, and is captured by a screen 11 of the water treatment system. The waste residue 40 and the excess sludge 35 separated in the settling tank 5 are processed.
The dehydrator 15 is appropriately selected from a centrifugal dehydrator, a pressure dehydrator, a belt press dehydrator, a multiple disk dehydrator, a screw press dehydrator, and the like.
The drying device 16 is a well-known device that evaporates moisture by heat, and is selected from direct drying, indirect drying, vacuum drying, and the like.
As the incineration facility 17, various facilities such as a fluidized bed incinerator and a stoker incinerator are used.
The residue 40 and excess sludge 35 are dehydrated by the dehydrator 15, dried by the dryer 16, and incinerated by the incinerator 17. Further, when a compost facility is provided, composting may be performed.

本実施例ではし尿系汚水３０と家畜糞尿３１を併合処理するシステムであり、汚泥が多量に発生することが考えられるため、汚泥処理系（II）の処理容量を比較的大きくとるようにする。
また、乾燥装置１６からの乾燥汚泥４４の少なくとも一部を後述する発電系の燃焼設備１９に投入するようにしてもよく、これにより増加した汚泥による汚泥処理系の負荷を軽減することができる。 In this embodiment, the system is a system that combines the human waste sewage 30 and the livestock manure 31, and it is considered that a large amount of sludge is generated. Therefore, the treatment capacity of the sludge treatment system (II) is made relatively large.
Further, at least a part of the dried sludge 44 from the drying device 16 may be input to the power generation system combustion facility 19 described later, thereby reducing the load on the sludge treatment system due to the increased sludge.

（III）発電系は、木質バイオマス４５を熱分解する熱分解設備１８と、該熱分解により発生した熱分解ガス４７を燃焼させる燃焼設備１９と、該燃焼設備１９からの高温の燃焼排ガスのエネルギーにより発電を行う発電設備２０と、を主要構成とする。ここで、一般にバイオマスとはエネルギー源又は工業原料として利用することのできる生物体をいい、木質バイオマス４５としては残廃材、建廃由来木屑、建築廃材、解体材、間伐材等が挙げられる。
熱分解設備１８では、酸素欠乏状態で５００℃〜７００℃に維持された炉内にて木質バイオマス４５を加熱して熱分解する装置であり、燃焼設備１９は該熱分解により発生した熱分解ガス４７を燃料として燃焼を行う装置である。発電設備２０は、燃焼設備１９からの排ガスのエネルギーを電力に変換するガスタービンや、燃焼設備１９にて生成した高温蒸気のエネルギーを電力に変換する蒸気タービン等の発電機を備える。発電設備２０にて発電した電力はシステム内にて利用することが好ましい。 (III) The power generation system includes a thermal decomposition facility 18 that thermally decomposes the woody biomass 45, a combustion facility 19 that combusts the pyrolysis gas 47 generated by the thermal decomposition, and the energy of the high-temperature combustion exhaust gas from the combustion facility 19 And the power generation facility 20 that generates power by the main configuration. Here, the biomass generally refers to a living body that can be used as an energy source or an industrial raw material, and the woody biomass 45 includes residual materials, building waste-derived wood chips, building waste materials, demolition materials, thinning materials, and the like.
The pyrolysis facility 18 is a device that heats and decomposes the woody biomass 45 in a furnace maintained at 500 ° C. to 700 ° C. in an oxygen-deficient state, and the combustion facility 19 is a pyrolysis gas generated by the pyrolysis. It is an apparatus that performs combustion using 47 as fuel. The power generation facility 20 includes a generator such as a gas turbine that converts the energy of exhaust gas from the combustion facility 19 into electric power, or a steam turbine that converts the energy of high-temperature steam generated by the combustion facility 19 into electric power. The power generated by the power generation facility 20 is preferably used in the system.

さらに本実施例の特徴的構成として、熱分解設備１８にて発生した熱分解残渣４６を脱窒処理設備１０に供給する構成となっている。熱分解残渣４６は必要に応じて粉砕して微粒化することが好ましい。
熱分解残渣４６は多孔質であるため、これを脱窒処理設備１０に供給することで、し尿系汚水３０及び家畜糞尿３１に含有される内分泌攪乱化学物質や変異原性物質等の難分解性物質を吸着して水処理系から除去する作用を有する。該熱分解残渣４６の供給先は、脱窒処理設備１０内であれば何れでもよいが、第１撹拌槽１が好ましく、これにより熱分解残渣４６の滞留時間が長くなり吸着効果が向上する。 Furthermore, as a characteristic configuration of the present embodiment, the thermal decomposition residue 46 generated in the thermal decomposition facility 18 is supplied to the denitrification processing facility 10. The pyrolysis residue 46 is preferably pulverized and atomized as necessary.
Since the pyrolysis residue 46 is porous, by supplying it to the denitrification treatment facility 10, it is difficult to decompose the endocrine disrupting chemicals and mutagenic substances contained in the human waste sewage 30 and the livestock manure 31. Adsorbs and removes substances from the water treatment system. The supply destination of the pyrolysis residue 46 may be any as long as it is in the denitrification treatment facility 10, but the first stirring tank 1 is preferable, thereby increasing the residence time of the pyrolysis residue 46 and improving the adsorption effect.

本実施例によれば、家畜糞尿３１を、し尿処理施設の中でも比較的生物処理水槽容積の大きい標準脱窒処理設備１０に受入れて混合処理することができるようになり、新たに家畜糞尿施設を設置することなく既存のし尿処理施設において処理することが可能となる。
また、生物処理の第１曝気槽２の曝気装置として、すでに設置されている散気管方式より酸素溶解速度、酸素溶解効率が大きく設置が容易で出入れ自在な水中投込型の曝気装置を設置することにより、混合した家畜糞尿分の負荷を希釈水を投入せずに処理可能となる。
さらに、このシステムの余剰敷地内または近隣に熱分解設備１８を設け、木質バイオマス４５を熱分解して発生した熱分解残渣４６を脱窒処理設備１０に供給することにより、内分泌攪乱化学物質や変異原性物質等の難分解性物質を吸着除去することができる。
さらにまた、家畜糞尿３１の受入れで増加した余剰汚泥と木質バイオマス４５から得られた熱分解ガス４７を混合して燃焼させ、その排熱３９で発電を実施し、電力を家畜糞尿受入れで増加する消費エネルギーの補填に利用することにより、エネルギーの有効利用が可能となる。木質バイオマス４５の熱分解ガス４７は高カロリーであるため汚泥との混焼においては熱収支改善に大きく寄与することとなる。 According to the present embodiment, the livestock manure 31 can be received and mixed in the standard denitrification treatment facility 10 having a relatively large biological treatment water tank volume in the human waste treatment facility, and the livestock manure facility is newly established. It can be processed in an existing human waste treatment facility without being installed.
In addition, as an aeration device for the first aeration tank 2 for biological treatment, an aeration device with a water injection type is installed that has a larger oxygen dissolution rate and oxygen dissolution efficiency than the already installed diffuser tube system, and is easy to install. By doing so, it becomes possible to process the mixed livestock manure load without adding dilution water.
Furthermore, a pyrolysis facility 18 is provided in or near the surplus site of this system, and the pyrolysis residue 46 generated by pyrolyzing the woody biomass 45 is supplied to the denitrification treatment facility 10, thereby allowing endocrine disrupting chemicals and mutations. It is possible to adsorb and remove hardly decomposable substances such as protogenic substances.
Furthermore, surplus sludge increased by receiving livestock manure 31 and pyrolysis gas 47 obtained from the woody biomass 45 are mixed and burned, and electricity is generated with the exhaust heat 39, and power is increased by receiving livestock manure. By using it to supplement energy consumption, energy can be used effectively. Since the pyrolysis gas 47 of the woody biomass 45 has a high calorie, it greatly contributes to the improvement of the heat balance in the co-firing with sludge.

図２に本発明の実施例２に係る家畜糞尿処理システムの全体構成図を示す。尚、本実施例２において、上記した実施例１と同様の構成についてはその詳細な説明を省略する。
実施例２では、脱窒処理設備１０にて沈殿槽５を設けずに、再曝気槽４に浸漬膜５１を設置した構成となっている。浸漬膜５１は、再曝気槽４内に浸漬設置され、曝気により水槽内に形成される旋回流によって膜面の汚れをかきとりながら固液分離を行なう装置である。
さらに、再曝気槽４からの返送汚泥３６を熱処理する熱処理装置９を設け、熱処理汚泥３８を第１撹拌槽１に返送するようにしている。熱処理装置９にて加熱されることにより返送汚泥３６は可溶化され、脱窒処理設備１０における分解反応が促進される。
また、熱処理装置９には、発電設備２０からの発電排熱（３００℃〜４００℃程度）が供給され、この排熱により返送汚泥３６を加熱することが好ましい。 FIG. 2 shows an overall configuration diagram of a livestock manure processing system according to Embodiment 2 of the present invention. In the second embodiment, detailed description of the same configuration as that of the first embodiment will be omitted.
In Example 2, the denitrification treatment facility 10 does not provide the sedimentation tank 5, and the immersion film 51 is installed in the re-aeration tank 4. The immersion film 51 is an apparatus that is immersed in the re-aeration tank 4 and performs solid-liquid separation while scraping the dirt on the film surface by a swirling flow formed in the water tank by aeration.
Further, a heat treatment device 9 for heat-treating the return sludge 36 from the re-aeration tank 4 is provided so that the heat-treated sludge 38 is returned to the first stirring tank 1. The return sludge 36 is solubilized by being heated by the heat treatment apparatus 9, and the decomposition reaction in the denitrification treatment facility 10 is promoted.
Moreover, it is preferable that the heat treatment apparatus 9 is supplied with power generation exhaust heat (about 300 ° C. to 400 ° C.) from the power generation facility 20 and heats the return sludge 36 by this heat exhaust.

このように、本実施例によれば熱処理装置９によって汚泥の生物分解性が向上して第１撹拌槽１から再曝気槽４での分解が進み、また浸漬膜５１の適用で槽内のＭＬＳＳ濃度が高く採れ、全体として余剰汚泥発生量が低減される。従って、家畜糞尿３１を受入れても汚泥の処理量が大幅に増大することがなく、既存の汚泥処理系でも十分対応できるようになる。また浸漬膜５１を設置することで沈殿槽および凝集沈殿装置を省略できる。   Thus, according to the present embodiment, the biodegradability of the sludge is improved by the heat treatment apparatus 9 and the decomposition in the re-aeration tank 4 proceeds from the first stirring tank 1, and the MLSS in the tank is applied by applying the immersion film 51. The concentration is high and the amount of excess sludge generated is reduced as a whole. Therefore, even if the livestock manure 31 is received, the treatment amount of sludge does not increase significantly, and the existing sludge treatment system can be sufficiently handled. Further, by installing the immersion film 51, the settling tank and the coagulation settling device can be omitted.

本発明の実施例１に係る家畜糞尿処理システムの全体構成図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram of the livestock manure processing system which concerns on Example 1 of this invention. 本発明の実施例２に係る家畜糞尿処理システムの全体構成図である。It is a whole block diagram of the livestock manure processing system which concerns on Example 2 of this invention. 投げ込み型曝気装置の構成を示し、（ａ）ドラフトチューブ式曝気装置の斜視図、（ｂ）は回転空気分散式曝気装置の斜視図である。The structure of a throw-in type aeration apparatus is shown, (a) A perspective view of a draft tube type aeration apparatus, (b) is a perspective view of a rotating air dispersion type aeration apparatus. 標準脱窒処理設備の基本フローを示す図である。It is a figure which shows the basic flow of a standard denitrification processing equipment. 従来の家畜糞尿処理システムの全体構成図である。It is a whole block diagram of the conventional livestock manure processing system.

符号の説明Explanation of symbols

１ 第１撹拌槽
２ 第１曝気槽
３ 第２撹拌槽
４ 再曝気槽
５ 沈殿槽
６ 投げ込み型曝気装置
７ 散気管
９ 熱処理装置
１０ 脱窒処理設備
１５ 脱水装置
１６ 乾燥装置
１７ 焼却設備
１８ 熱分解設備
１９ 燃焼設備
２０ 発電設備
５１ 浸漬膜 DESCRIPTION OF SYMBOLS 1 1st stirring tank 2 1st aeration tank 3 2nd stirring tank 4 Re-aeration tank 5 Precipitation tank 6 Throwing type aeration apparatus 7 Aeration pipe 9 Heat treatment apparatus 10 Denitrification processing equipment 15 Dehydration equipment 16 Drying equipment 17 Incineration equipment 18 Thermal decomposition Equipment 19 Combustion equipment 20 Power generation equipment 51 Immersion membrane

Claims (8)

し尿系汚水を処理する標準脱窒処理設備を備え、該標準脱窒処理設備は上流側から順に無酸素状態に保持された第１撹拌槽と、第１曝気手段を備えた第１曝気槽と、前記第１撹拌槽より小容積で無酸素状態に保持された第２撹拌槽と、第２曝気手段を備えた再曝気槽とが直列配設された家畜糞尿処理システムにおいて、
木質バイオマスを熱分解する熱分解設備を備え、該熱分解設備にて発生した熱分解残渣の少なくとも一部を前記標準脱窒処理設備の何れかの槽に投入するとともに、
前記第１曝気手段を投げ込み型曝気装置とし、前記し尿系汚水とともに家畜糞尿を標準脱窒処理設備に投入し、該標準脱窒処理設備に希釈水を投入せずに脱窒処理を行うとともに、前記投げ込み型曝気装置は、酸素溶解効率２５％以上を有するドラフトチューブ式曝気装置若しくは回転空気分散式曝気装置であり、単位容積当りの酸素消費速度、酸素溶解効率を増大させることにより家畜糞尿の受け入れで増加した負荷を処理可能とするものであることを特徴とする家畜糞尿処理システム。 A standard denitrification treatment facility for treating human waste sewage, the standard denitrification treatment facility being maintained in an oxygen-free state in order from the upstream side; and a first aeration tank provided with a first aeration means; In the livestock manure processing system in which the second agitation tank held in an oxygen-free state with a smaller volume than the first agitation tank and the re-aeration tank equipped with the second aeration means are arranged in series.
A thermal decomposition facility for thermally decomposing woody biomass is provided, and at least a part of the thermal decomposition residue generated in the thermal decomposition facility is put into any tank of the standard denitrification processing facility,
The first aeration means is a throw-in type aeration apparatus, and livestock manure is introduced into a standard denitrification treatment facility together with the human waste sewage, and denitrification treatment is performed without adding dilution water to the standard denitrification treatment facility , The throw-in type aeration apparatus is a draft tube type aeration apparatus or rotating air dispersion type aeration apparatus having an oxygen dissolution efficiency of 25% or more, and accepts livestock manure by increasing the oxygen consumption rate per unit volume and the oxygen dissolution efficiency. A livestock excreta treatment system characterized by being able to handle the increased load . 前記熱分解設備からの熱分解ガスを燃料とする燃焼設備を設け、前記標準脱窒処理設備にて生じた余剰汚泥の少なくとも一部を前記燃焼設備にて燃焼することを特徴とする請求項１記載の家畜糞尿処理システム。   2. A combustion facility using pyrolysis gas from the pyrolysis facility as a fuel is provided, and at least a part of surplus sludge generated in the standard denitrification treatment facility is combusted in the combustion facility. The livestock manure processing system described. 前記熱分解設備からの熱分解ガスを燃料とする燃焼設備と、該燃焼設備の排熱を用いて発電を行う発電設備とを備えることを特徴とする請求項１記載の家畜糞尿処理システム。   The livestock manure processing system according to claim 1, comprising a combustion facility that uses pyrolysis gas from the pyrolysis facility as fuel, and a power generation facility that generates power using exhaust heat of the combustion facility. 前記標準脱窒処理設備の返送汚泥の少なくとも一部が導入され、前記発電設備若しくは前記燃焼設備の排熱により該返送汚泥を熱処理する熱処理装置を備えたことを特徴とする請求項１記載の家畜糞尿処理システム。   The livestock according to claim 1, further comprising a heat treatment apparatus in which at least a part of the return sludge of the standard denitrification treatment facility is introduced and heat-treats the return sludge by exhaust heat of the power generation facility or the combustion facility. Manure processing system. 前記再曝気槽に浸漬膜を設置して固液分離を行うようにしたことを特徴とする請求項１記載の家畜糞尿処理システム。   The livestock manure processing system according to claim 1, wherein a solid film is separated by installing an immersion membrane in the re-aeration tank. し尿系汚水を処理する標準脱窒処理設備にて家畜糞尿を混合処理する家畜糞尿処理方法において、
酸素溶解効率２５％以上を有するドラフトチューブ式曝気装置若しくは回転空気分散式曝気装置で、単位容積当りの酸素消費速度、酸素溶解効率を増大させることにより家畜糞尿の受け入れで増加した負荷を処理可能とする投げ込み型曝気装置を用意し、
前記標準脱窒処理設備に希釈水を投入せずに前記し尿系汚水及び前記家畜糞尿を脱窒処理し、該脱窒処理にて前記投げ込み型曝気装置により高酸素負荷で曝気するとともに、
木質バイオマスを熱分解して生成した熱分解残渣を前記標準脱窒処理設備に供給するようにしたことを特徴とする家畜糞尿処理方法。 In the livestock manure processing method of mixing livestock manure in the standard denitrification treatment equipment for treating human waste sewage,
With a draft tube type aeration device or rotating air dispersion type aeration device having an oxygen dissolution efficiency of 25% or more, it is possible to handle the increased load due to the acceptance of livestock manure by increasing the oxygen consumption rate per unit volume and the oxygen dissolution efficiency Prepare a throw-in type aeration device
The human waste system of sewage and the manure is denitrified without introducing dilution water to the standard denitrification equipment, as well as aerated with high oxygenation by the immersion-type aerator at dehydration nitrogen treatment,
A method for treating livestock manure, wherein a pyrolysis residue produced by pyrolyzing woody biomass is supplied to the standard denitrification treatment facility. 前記熱分解により発生した熱分解ガスを燃料として、前記標準脱窒処理設備にて生じた余剰汚泥の少なくとも一部を燃焼することを特徴とする請求項６記載の家畜糞尿処理方法。   The livestock manure treatment method according to claim 6, wherein at least a part of excess sludge generated in the standard denitrification treatment facility is combusted using the pyrolysis gas generated by the pyrolysis as a fuel. 前記熱分解により発生した熱分解ガスを燃焼させ、該燃焼の排熱を用いて発電を行うようにし、前記燃焼若しくは前記発電による排熱を用いて、前記標準脱窒処理設備の返送汚泥の少なくとも一部を熱処理することを特徴とする請求項６記載の家畜糞尿処理方法。   Combusting the pyrolysis gas generated by the pyrolysis, and generating power using the exhaust heat of the combustion, and using the exhaust heat from the combustion or the power generation, at least the returned sludge of the standard denitrification treatment facility A method for treating livestock manure according to claim 6, wherein a part of the livestock is heat-treated.
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Cited By (2)

* Cited by examiner, † Cited by third party
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WO2015142092A1 (en) * 2014-03-20 2015-09-24 (주)바이오토피아 Apparatus for composting wastewater of livestock farm without malodors
EP4159695A1 (en) * 2020-05-27 2023-04-05 Samsung Electronics Co., Ltd. Solid feces treatment apparatus and individual feces treatment system including same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
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JP4996516B2 (en) * 2008-03-24 2012-08-08 メタウォーター株式会社 Reclaimed water production method
JP5325461B2 (en) * 2008-05-28 2013-10-23 株式会社デリカシェフ Solid food organic waste treatment method
JP2016155086A (en) * 2015-02-25 2016-09-01 農業生産法人株式会社 アグリジャパン Recycling system
JP6894278B2 (en) * 2016-04-19 2021-06-30 水ｉｎｇ株式会社 Wastewater treatment method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742396A (en) * 1980-08-28 1982-03-09 Mitsubishi Heavy Ind Ltd Treatment of highly concentrated waste liquid
JP3368938B2 (en) * 1993-05-11 2003-01-20 株式会社荏原製作所 Wastewater treatment method and apparatus
JPH07119948A (en) * 1993-10-20 1995-05-12 Hitachi Ltd Integrated processing system for discharged water and waste material
JPH10192832A (en) * 1997-01-08 1998-07-28 Toto Ltd Apparatus for garbage drainage treatment and method for operating the same
JP3874590B2 (en) * 2000-04-07 2007-01-31 株式会社クボタ Sludge treatment method
JP2003260449A (en) * 2002-03-12 2003-09-16 Kubota Corp Method for treating high concentration organic waste
JP2004290826A (en) * 2003-03-27 2004-10-21 Asahi Kasei Clean Chemical Co Ltd System and method for treating high concentration organic liquid
JP2005152838A (en) * 2003-11-27 2005-06-16 Mitsubishi Heavy Ind Ltd Method and facility for treating organic waste compositely
JP2005211715A (en) * 2004-01-27 2005-08-11 Kobelco Eco-Solutions Co Ltd Organic waste liquid treatment method and its treatment apparatus
JP4859192B2 (en) * 2005-12-09 2012-01-25 三菱重工環境・化学エンジニアリング株式会社 Advanced sewage treatment method and system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015142092A1 (en) * 2014-03-20 2015-09-24 (주)바이오토피아 Apparatus for composting wastewater of livestock farm without malodors
EP4159695A1 (en) * 2020-05-27 2023-04-05 Samsung Electronics Co., Ltd. Solid feces treatment apparatus and individual feces treatment system including same
EP4159695A4 (en) * 2020-05-27 2024-05-29 Samsung Electronics Co., Ltd. Solid feces treatment apparatus and individual feces treatment system including same

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