JP2018167170A - Digestion facility - Google Patents

Digestion facility Download PDF

Info

Publication number
JP2018167170A
JP2018167170A JP2017065892A JP2017065892A JP2018167170A JP 2018167170 A JP2018167170 A JP 2018167170A JP 2017065892 A JP2017065892 A JP 2017065892A JP 2017065892 A JP2017065892 A JP 2017065892A JP 2018167170 A JP2018167170 A JP 2018167170A
Authority
JP
Japan
Prior art keywords
digestion
facility
digesters
digester
tanks
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2017065892A
Other languages
Japanese (ja)
Other versions
JP7215822B2 (en
Inventor
俊康 柄澤
Toshiyasu Karasawa
俊康 柄澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Environment Co Ltd
Original Assignee
Sumitomo Heavy Industries Environment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Heavy Industries Environment Co Ltd filed Critical Sumitomo Heavy Industries Environment Co Ltd
Priority to JP2017065892A priority Critical patent/JP7215822B2/en
Publication of JP2018167170A publication Critical patent/JP2018167170A/en
Application granted granted Critical
Publication of JP7215822B2 publication Critical patent/JP7215822B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Landscapes

  • Treatment Of Sludge (AREA)

Abstract

To provide a sludge digestion facility for sewage treatment and the like which can be installed at a low cost.SOLUTION: A digestion facility 1 comprises a plurality of digestion tanks 2 with the maximum diameter of 3.5 m or smaller which can reduce the cost. Preferably, the digestion facility secures target treatment capacity by simple means such as extension of the digestion tanks 2 since the plurality of digestion tanks 2 are connected in parallel. It can quickly cope with change in physical property of objects to be digested and the like, since each operation of the digestion tanks 2 is managed respectively. Efficiency in digestion treatment can be improved by connecting the plurality of digestion tanks 2 in series and by performing digestion treatment in multiple steps. Preferably, constitution of a device can be simplified because of a smaller number of inlet ports and discharge portions of the objects to be digested. Operation management becomes easy by collectively managing operation of the plurality of digestion tanks.SELECTED DRAWING: Figure 1

Description

本発明は、工場生産と道路輸送が可能な消化槽を複数用いて消化処理を行う消化設備に関する。   The present invention relates to a digestion facility that performs digestion using a plurality of digesters capable of factory production and road transport.

下水処理場等に設けられる汚泥消化設備は、汚泥を減容化できるとともに、嫌気性消化過程で発生した消化ガスをエネルギー源として活用できる利点があり、消化ガスを消化槽の熱源や焼却炉の補助燃料等に利用するほか、発電燃料や都市ガスとして利用することも期待されている。   The sludge digestion equipment installed in sewage treatment plants has the advantage that it can reduce sludge volume and can use digestion gas generated during anaerobic digestion process as an energy source. In addition to being used as auxiliary fuel, it is also expected to be used as power generation fuel and city gas.

汚泥の嫌気性消化においては、適正な消化日数、消化温度、汚泥の撹拌が必要となるが、機械撹拌を行う汚泥消化槽として、槽内にドラフトチューブを設け、撹拌用ポンプでドラフトチューブ内に上向流と下向流を交互に生じさせて撹拌する消化槽が提案されている（特許文献１参照。）。   In anaerobic digestion of sludge, proper digestion days, digestion temperature, and sludge agitation are required, but as a sludge digestion tank that performs mechanical agitation, a draft tube is provided in the tank, and a stirring pump is installed in the draft tube. There has been proposed a digestion tank in which an upward flow and a downward flow are alternately generated and stirred (see Patent Document 1).

特開平１０−１５６３８４号公報JP-A-10-156384

下水処理場等に設けられる汚泥消化設備では、直径１０ｍを超える大型の消化槽が主に用いられており、それを設置場所で土木構造物として建設する必要があるため、消化設備の高コスト化に繋がり、普及の妨げとなっていた。
本発明は、低コストで設置可能な消化設備を提供することを目的とする。 The sludge digestion equipment installed at sewage treatment plants, etc., mainly uses large digesters with a diameter of more than 10m, and it is necessary to construct them as civil engineering structures at the installation location, thus increasing the cost of the digestion equipment. It was connected to and became the hindrance of the spread.
An object of this invention is to provide the digestive installation which can be installed at low cost.

本発明者は、上記の課題について鋭意検討した結果、大型の消化槽の代替として直径３．５ｍ以下の消化槽を複数用いることにより、消化槽自体の工場生産と道路輸送が可能となって、消化設備のコストを削減することができることを見出し、本発明を完成させた。
具体的には、以下の消化設備である。 As a result of earnestly examining the above-mentioned problems, the present inventor can use a plurality of digestive tanks having a diameter of 3.5 m or less as an alternative to a large digestive tank to enable factory production and road transportation of the digestive tank itself, The present inventors have found that the cost of digestion equipment can be reduced and completed the present invention.
Specifically, the following digestion facilities.

上記課題を解決するための本発明の消化設備は、複数の消化槽を備える消化設備であって、前記複数の消化槽の最大直径が３．５ｍ以下であることを特徴とする。   The digestion equipment of the present invention for solving the above-mentioned problems is a digestion equipment provided with a plurality of digesters, wherein the maximum diameter of the plurality of digesters is 3.5 m or less.

日本国においては、「制限外積載許可」を受けることにより、車両積載時の幅が３．５ｍ以下になるものまで車両輸送が認められている。従って、最大直径が３．５ｍ以下の消化槽を選択することにより、工場生産した消化槽やその構造部品を設置場所に輸送して設置することが可能になるため、消化設備のコストを削減することができる。   In Japan, vehicle transportation is permitted up to a width of 3.5 m or less when a vehicle is loaded by receiving an “unrestricted loading permission”. Therefore, by selecting a digestion tank with a maximum diameter of 3.5 m or less, it is possible to transport and install the factory-produced digestion tank and its structural parts to the installation location, thus reducing the cost of digestion equipment. be able to.

更に本発明の消化設備一実施態様としては、複数の消化槽が並列に接続されているという特徴を有する。
この特徴によれば、消化槽の増設等の簡易的な手段によって、目的の処理能力を確保することができる。また、各消化槽ごとに運転の管理をするため、被消化物の物性等の変動に対して迅速に対応することが可能である。 Furthermore, as one embodiment of the digestion equipment of the present invention, there is a feature that a plurality of digesters are connected in parallel.
According to this feature, the target processing capacity can be ensured by simple means such as addition of a digester. In addition, since the operation is managed for each digestion tank, it is possible to respond quickly to changes in the physical properties of the digested material.

更に本発明の消化設備の一実施態様としては、複数の消化槽が直列に接続されているという特徴を有する。
この特徴によれば、消化処理を多段階で行い、消化処理の効率を改善することができる。また、被消化物の投入口および排出部の数が少なくなるため、装置の構成を簡素化できるという効果を奏する。更には、複数の消化槽の運転を一括して管理するため、運転管理が容易である。 Furthermore, as one embodiment of the digestion equipment of the present invention, a plurality of digesters are connected in series.
According to this feature, the digestion process can be performed in multiple stages, and the efficiency of the digestion process can be improved. Moreover, since the number of the inlets and outlets for the digested material is reduced, the configuration of the apparatus can be simplified. Furthermore, since the operation of a plurality of digesters is collectively managed, operation management is easy.

更に本発明の消化設備の一実施態様としては、複数の消化槽内の撹拌が、ポンプで被消化物を循環させることにより行われるという特徴を有する。
この特徴によれば、消化槽内の撹拌に利用するポンプを消化槽外に設置することが可能であるため、撹拌装置の維持管理が容易となる。
また、アスペクト比（高さ／直径）の大きな消化槽において、インペラ式撹拌機等の物理的な撹拌手段を利用した場合、消化槽内の上下方向の撹拌が不十分となるが、ポンプを利用した撹拌によれば、上下方向の撹拌を容易に行うことができる。 Furthermore, as one embodiment of the digestion equipment of this invention, it has the characteristics that stirring in a some digestion tank is performed by circulating a to-be-digested object with a pump.
According to this feature, the pump used for stirring in the digestion tank can be installed outside the digestion tank, so that the maintenance of the stirring device is facilitated.
In addition, when a physical stirring means such as an impeller type stirrer is used in a digester with a large aspect ratio (height / diameter), the vertical stirring in the digester is insufficient, but a pump is used. According to the stirring, vertical stirring can be easily performed.

更に本発明の消化設備の一実施態様としては、複数の消化槽内の撹拌が、１つのポンプで被消化物を循環させることにより行われるという特徴を有する。
この特徴によれば、１つのポンプで複数の消化槽内を撹拌するため、装置が簡素化し、設備コストも低減することができる。また、消化槽を増設した場合であっても、ポンプの数を増やす必要がないため、増設時のコストも削減することができる。 Furthermore, one embodiment of the digestion equipment of the present invention is characterized in that stirring in a plurality of digesters is performed by circulating the digested material with a single pump.
According to this feature, since a plurality of digesters are agitated with one pump, the apparatus is simplified and the equipment cost can be reduced. Further, even if the number of digestion tanks is increased, it is not necessary to increase the number of pumps, so that the cost at the time of expansion can be reduced.

更に本発明の消化設備の一実施態様としては、被消化物の循環方向が、定期的に逆方向に変更されるという特徴を有する。
この特徴によれば、ポンプによる攪拌作用が高まるため、消化槽内の未撹拌領域を低減することができる。 Furthermore, as one embodiment of the digestion equipment of the present invention, the circulation direction of the digested material is periodically changed to the reverse direction.
According to this feature, since the stirring action by the pump is enhanced, the unstirred area in the digestion tank can be reduced.

更に本発明の消化設備の一実施態様としては、複数の消化槽が、互いに連結されているという特徴を有する。
この特徴によれば、消化槽の強度や構造安定性を高めることができる。 Furthermore, one embodiment of the digestion equipment of the present invention is characterized in that a plurality of digesters are connected to each other.
According to this feature, the strength and structural stability of the digester can be increased.

本発明によれば、消化設備を低コストで設置することができる。   According to the present invention, a digestion facility can be installed at low cost.

本発明の第１の実施形態である消化設備を示す概略説明図である。It is a schematic explanatory drawing which shows the digestion equipment which is the 1st Embodiment of this invention. 本発明の第１の実施形態である消化設備の消化槽の概略説明断面図である（図１のＡ−Ａ断面図）。It is a schematic explanatory sectional drawing of the digestion tank of the digestion equipment which is the 1st Embodiment of this invention (AA sectional drawing of FIG. 1). 本発明の消化設備に利用することができる消化槽の他の実施形態を示す説明概略側面図である。It is an explanatory schematic side view which shows other embodiment of the digestion tank which can be utilized for the digestion equipment of this invention. 本発明の第１の実施形態である消化設備の消化槽の概略説明斜視図である。It is a schematic explanatory perspective view of the digestion tank of the digestion equipment which is the 1st Embodiment of this invention. 本発明の第２の実施形態である消化設備を示す概略説明図である。It is a schematic explanatory drawing which shows the digestion equipment which is the 2nd Embodiment of this invention. 本発明の第３の実施形態である消化設備を示す概略説明図である。It is a schematic explanatory drawing which shows the digestion equipment which is the 3rd Embodiment of this invention. 本発明の第４の実施形態である消化設備を示す概略説明図である。It is a schematic explanatory drawing which shows the digestion equipment which is the 4th Embodiment of this invention.

本発明の一態様である消化設備は、最大直径が３．５ｍ以下の複数の消化槽を用いて消化処理を行う消化設備である。
以下、図面を参照しつつ、本発明の一態様である消化設備の実施形態を詳細に説明する。 The digestion facility which is one embodiment of the present invention is a digestion facility that performs digestion using a plurality of digesters having a maximum diameter of 3.5 m or less.
Hereinafter, an embodiment of a digestion facility which is an aspect of the present invention will be described in detail with reference to the drawings.

［第１の実施形態］
図１は、本発明の第１の実施形態である消化設備を示す説明概略図であり、図２は、消化槽の概略説明断面図であり（図１のＡ−Ａ断面図）、図４は、消化槽の概略説明斜視図である。 [First Embodiment]
FIG. 1 is an explanatory schematic view showing a digestion facility according to a first embodiment of the present invention, and FIG. 2 is a schematic explanatory sectional view of a digester (AA sectional view of FIG. 1), FIG. These are the schematic explanatory perspective views of a digester.

図１の消化設備１は、３つの円筒形の消化槽が並列に接続された設備であり、それぞれの消化槽で処理される一段階消化設備である。汚泥濃縮槽等から移送されてきた汚泥（被消化物）は、管路Ｐ１を介して直接消化槽２に投入されるか、管路Ｐ２を介して破砕機３に移送されて固形物等が細断された後、循環ポンプ４を経由し、熱交換器５で消化温度等に温度調節がなされて、管路Ｐ３を介して消化槽２に投入される。消化槽２では、汚泥の嫌気性消化を促進するために、汚泥の温度（消化温度）管理や撹拌が行われ、消化日数を経過した消化汚泥は、管路Ｐ８を介して脱水処理機等に移送される。なお、消化過程で発生した消化ガスは、管路Ｐ９を介して回収されて、熱交換器５の加熱や焼却炉の補助燃料等に利用することもできる。   The digestion facility 1 of FIG. 1 is a facility in which three cylindrical digesters are connected in parallel, and is a one-stage digestion facility that is processed in each digester. The sludge (substance to be digested) transferred from the sludge concentration tank or the like is directly fed into the digestion tank 2 via the pipe line P1 or transferred to the crusher 3 via the pipe line P2 so that the solid matter etc. After being shredded, the temperature is adjusted to the digestion temperature or the like by the heat exchanger 5 via the circulation pump 4, and the digestion tank 2 is introduced through the pipe P3. In the digestion tank 2, in order to promote the anaerobic digestion of the sludge, the sludge temperature (digestion temperature) is controlled and stirred, and the digested sludge that has passed the number of days of digestion is passed to the dehydrator etc. via the pipe P8. Be transported. The digestion gas generated in the digestion process can be recovered through the pipe P9 and used for heating the heat exchanger 5, an auxiliary fuel for the incinerator, or the like.

図１の左側の消化槽は、管路Ｐ５を介して循環ポンプ４と接続した下部吸入排出口７と、管路Ｐ４を介して中央の消化槽の下部吸入排出口７と接続した上部吸入排出口６を備えている。また、中央の消化槽は右側の消化槽の下部吸入排出口７と接続した上部吸入排出口６を、右側の消化槽は管路Ｐ３を介して循環ポンプ４と接続した上部吸入排出口６を備えており、循環ポンプ４を利用して汚泥を吸入、排出させることにより、１つの循環ポンプで３つの消化槽内の汚泥を循環させて撹拌することができる仕組みとなっている。循環ポンプ４は、消化槽外に設置することが可能であるため、撹拌装置の維持管理が容易となり、さらに１つの循環ポンプで複数の消化槽内の撹拌が可能であるため、消化槽を増設した場合であっても、循環ポンプの数を増やす必要がないため、コストを削減することができる。   The digester tank on the left side of FIG. 1 has a lower inlet / outlet port 7 connected to the circulation pump 4 via the line P5 and an upper inlet / outlet port connected to the lower inlet / outlet port 7 of the central digester via the line P4. An outlet 6 is provided. The central digester has an upper suction / discharge port 6 connected to the lower suction / discharge port 7 of the right digester, and the right digester has an upper suction / discharge port 6 connected to the circulation pump 4 via a conduit P3. It has a mechanism in which sludge is sucked and discharged using the circulation pump 4 so that the sludge in the three digesters can be circulated and stirred by one circulation pump. Since the circulation pump 4 can be installed outside the digestion tank, it becomes easy to maintain and manage the agitation device. Furthermore, since one circulation pump can agitate in multiple digestion tanks, the number of digestion tanks can be increased. Even in this case, it is not necessary to increase the number of circulation pumps, so that the cost can be reduced.

消化設備１は、開閉弁Ｖ３〜Ｖ６を利用した管路切り替えユニットを備えており、汚泥の循環方向を定期的に逆方向に変更できる仕組みとなっている。例えば、ポンプ４は、破砕機３から熱交換器５の方向へ輸送する場合、開閉弁Ｖ４と開閉弁Ｖ３を開け、開閉弁Ｖ６と開閉弁Ｖ５を閉じることにより、汚泥を左側の消化槽２の下部吸入排出口７から吸入し、右側の消化槽２の上部吸入排出口６から排出する循環を行い、逆に開閉弁Ｖ４と開閉弁Ｖ３を閉じ、開閉弁Ｖ６と開閉弁Ｖ５を開けることにより、汚泥を右側の消化槽２の上部吸入排出口６から吸入し、左側の消化槽２の下部吸入排出口７から排出する循環を行うことができる。汚泥の循環方向を定期的に逆方向に変更することによって、撹拌作用が高まり、消化槽内の未撹拌領域を低減することができる。
なお、消化槽内の撹拌は、ポンプで被消化物を循環させることによって行うことに限られず、インペラ式撹拌機等の公知の撹拌方法を利用したものであってもよい。 The digestion facility 1 includes a pipeline switching unit that uses the on-off valves V3 to V6, and has a mechanism that can periodically change the circulation direction of sludge in the reverse direction. For example, when the pump 4 is transported from the crusher 3 to the heat exchanger 5, the on-off valve V4 and the on-off valve V3 are opened and the on-off valve V6 and the on-off valve V5 are closed, so that the sludge is left in the digester 2 on the left side. Inhalation through the lower intake / exhaust port 7 and circulation through the upper intake / exhaust port 6 of the right digestion tank 2 are performed, conversely, the on-off valve V4 and on-off valve V3 are closed and the on-off valve V6 and on-off valve V5 are opened. Thus, it is possible to perform a circulation in which sludge is sucked from the upper suction discharge port 6 of the right digestion tank 2 and discharged from the lower suction discharge port 7 of the left digestion tank 2. By periodically changing the sludge circulation direction to the reverse direction, the stirring action can be enhanced, and the unstirred area in the digester can be reduced.
In addition, stirring in a digestion tank is not restricted to circulating a to-be-digested object with a pump, You may utilize well-known stirring methods, such as an impeller type stirrer.

本発明の消化装置では、撹拌手段として、ポンプを利用することが好ましい。本発明の消化装置は、消化槽の最大直径が３．５ｍ以下と小さいため、所定の処理能力を確保するためには、消化槽の高さを高くする必要がある。ここで、消化槽の高さが高くなると、インペラ式撹拌機等の物理的撹拌手段では、上下方向の撹拌が不十分となる。一方、ポンプによる撹拌では、上下方向の撹拌が十分にされるため、本発明の消化装置に適した撹拌手段であるといえる。   In the digester of the present invention, it is preferable to use a pump as the stirring means. In the digester of the present invention, since the maximum diameter of the digester is as small as 3.5 m or less, it is necessary to increase the height of the digester to ensure a predetermined processing capacity. Here, when the height of the digester is increased, vertical stirring is insufficient with a physical stirring means such as an impeller stirrer. On the other hand, in the stirring by the pump, since the stirring in the vertical direction is sufficient, it can be said that the stirring means is suitable for the digester of the present invention.

消化槽２は、図２に図示するように、最大直径３．５ｍ以下の円筒形の消化槽であるが、消化槽の形状は円筒形に限られず、図３の（ａ）のような卵形や（ｂ）のような亀甲形等であってもよい。「最大直径」とは、卵形や亀甲形のように、直径が一定でない場合の消化槽における最大の直径を意味し、最大直径は３．５ｍ以下であり、好ましくは３．３ｍ以下であり、より好ましくは３．２ｍ以下である。一方、消化槽の処理能力を勘案すれば、最大直径の下限としては、通常２．０ｍ以上であり、好ましくは２．５ｍ以上であり、より好ましくは２．８ｍ以上である。   As shown in FIG. 2, the digestion tank 2 is a cylindrical digestion tank having a maximum diameter of 3.5 m or less, but the shape of the digestion tank is not limited to the cylindrical shape, and an egg as shown in FIG. It may be a shape or a turtle shell shape such as (b). “Maximum diameter” means the maximum diameter in the digestive tub when the diameter is not constant, such as an egg shape or a turtle shell shape, and the maximum diameter is 3.5 m or less, preferably 3.3 m or less. More preferably, it is 3.2 m or less. On the other hand, considering the treatment capacity of the digester, the lower limit of the maximum diameter is usually 2.0 m or more, preferably 2.5 m or more, more preferably 2.8 m or more.

消化槽は、分割して輸送し、設置場所において組み立てることも可能であるため、その高さは制限されないが、アスペクト比（高さ／直径）は、通常１．５以上、好ましくは２．０以上、より好ましくは３．０以上であり、通常７．０以下、好ましくは５．０以下、より好ましくは４．０以下である。   The digester can be transported separately and assembled at the installation location, so the height is not limited, but the aspect ratio (height / diameter) is usually 1.5 or more, preferably 2.0. More preferably, it is 3.0 or more, usually 7.0 or less, preferably 5.0 or less, more preferably 4.0 or less.

消化槽２は、図４に図示するように、３つの円筒形の消化槽が互いに連結されている。「連結」とは、円筒形の消化槽において、構造体として繋がっていることを意味し、消化槽が互いに連結することにより、消化槽の強度や構造安定性を高めることができる。   As shown in FIG. 4, the digester 2 has three cylindrical digesters connected to each other. “Connected” means that the cylindrical digester is connected as a structure, and the digester can be connected to each other to increase the strength and structural stability of the digester.

連結方法としては、複数の消化槽を連結部材で連結しても、複数の消化槽を結合して一体としてもよい。また、複数の消化槽の配置は、一列で配置しても、複数列で配置してもよい。構造安定性を勘案すると、複数列で配置することが好ましい。   As a connection method, a plurality of digesters may be connected by a connecting member, or a plurality of digesters may be combined and integrated. In addition, the plurality of digesters may be arranged in a single row or in a plurality of rows. Considering the structural stability, it is preferable to arrange in a plurality of rows.

消化槽２は、鋼板製の円筒形の消化槽であるが、材料は繊維強化プラスティック（ＦＲＰ）等の軽量な高強度材料製であってもよい。ＦＲＰのような軽量な材料であると、輸送や設置がさらに容易となる。   The digestion tank 2 is a cylindrical digestion tank made of a steel plate, but the material may be made of a lightweight high-strength material such as fiber reinforced plastic (FRP). If it is a lightweight material such as FRP, transportation and installation are further facilitated.

消化設備は、複数の消化槽を並列に接続して１つの消化槽において一段階で消化する設備のほか、複数の消化槽を直列に接続して多段階で消化処理を行う設備であってもよい。なお、「並列に接続」とは、複数の消化槽が管路等を介して接続されているが、消化槽への被消化物の投入、消化処理、消化物の排出等がそれぞれの消化槽で独立して行われるもの、「直列に接続」とは、複数の消化槽が管路等を介して接続されており、被消化物が投入された消化槽から次の消化槽に被消化物や消化物が移送されて消化処理が行われるものを意味する。消化槽の数は、１つ当たりの消化槽の容量や処理容量によって適宜選択されるべきであるが、通常２以上、好ましくは３以上、より好ましくは４以上である。   Digestion equipment is a facility that connects multiple digesters in parallel and digests them in one stage in one digester, or a facility that connects multiple digesters in series to perform digestion in multiple stages. Good. “Connected in parallel” means that multiple digesters are connected via pipes, etc., but the digester is charged with digestion, digestion, digestion, etc. In the case of “separate in series”, a plurality of digesters are connected via pipes, etc., and the digested product is transferred from the digester into which the digested product is introduced to the next digester. Or digested material is transported and digested. The number of digesters should be appropriately selected according to the capacity and processing capacity of each digester, but is usually 2 or more, preferably 3 or more, more preferably 4 or more.

［第２の実施形態］
図５は、本発明の第２の実施形態である消化設備を示す説明概略図である。図５の消化設備は、最大直径が３．５ｍ以下の２つの円筒形の消化槽が直列に接続された設備であり、多段階で消化処理を行う多段階消化設備である。図５の消化設備は、図１の消化設備と同様に、循環ポンプ４と管路切り替えユニットを備えており、消化槽内の汚泥を循環させて撹拌すること、さらに汚泥の循環方向を定期的に逆方向に変更することができる設備である。また、図５の消化設備は、上部吸入排出口６は、消化槽内の略中央で上方向に向かって開口し、下部吸入排出口７は、消化槽内の略中央で下方向に向かって開口している。この構成により、消化槽内に上向流又は下向流を発生させることができるため、汚泥をより効率良く撹拌できるようになっている。 [Second Embodiment]
FIG. 5 is an explanatory schematic view showing a digestion facility according to the second embodiment of the present invention. The digestion facility in FIG. 5 is a facility in which two cylindrical digesters having a maximum diameter of 3.5 m or less are connected in series, and is a multi-stage digestion facility that performs digestion processing in multiple stages. The digestion facility of FIG. 5 includes a circulation pump 4 and a pipe switching unit, as in the digestion facility of FIG. 1, and circulates and stirs the sludge in the digestion tank, and further periodically circulates the sludge. It is equipment that can be changed in the reverse direction. In the digestion facility of FIG. 5, the upper suction / discharge port 6 opens upward at the approximate center in the digestion tank, and the lower suction / discharge port 7 faces downward at the approximate center in the digestion tank. It is open. With this configuration, an upward flow or a downward flow can be generated in the digestion tank, so that sludge can be stirred more efficiently.

［第３の実施形態］
図６は、本発明の第３の実施形態である消化設備を示す説明概略図である。図６の消化設備は、第２の実施形態の消化設備において、消化槽の内部にドラフトチューブ８を備えたものである。ドラフトチューブ８を設けることにより、消化槽の内部にドラフトチューブ８の内外を循環する循環流が形成され、上下方向の撹拌作用をより高めることができる。 [Third Embodiment]
FIG. 6 is an explanatory schematic diagram showing a digestion facility according to the third embodiment of the present invention. The digestion facility of FIG. 6 is a digestion facility according to the second embodiment, and includes a draft tube 8 inside the digestion tank. By providing the draft tube 8, a circulation flow that circulates inside and outside the draft tube 8 is formed inside the digestion tank, and the stirring action in the vertical direction can be further enhanced.

［第４の実施形態］
図７は、本発明の第４の実施形態である消化設備を示す説明概略図である。図７の消化設備は、最大直径が３．５ｍ以下の４つの円筒形の消化槽が直列に接続された設備であり、多段階で消化処理を行う多段階消化設備である。図７の消化設備は、それぞれの消化槽にインペラ式撹拌機９を備えており、インペラ式撹拌機９の回転により、消化槽内を撹拌する設備である。 [Fourth Embodiment]
FIG. 7 is an explanatory schematic diagram showing a digestion facility according to the fourth embodiment of the present invention. The digestion facility of FIG. 7 is a facility in which four cylindrical digestion tanks having a maximum diameter of 3.5 m or less are connected in series, and is a multi-stage digestion facility that performs a digestion process in multiple stages. The digestion equipment of FIG. 7 is equipped with an impeller stirrer 9 in each digestion tank, and the inside of the digestion tank is stirred by the rotation of the impeller stirrer 9.

本発明の消化設備は、下水処理場等の汚泥消化設備に利用することができる。   The digestion equipment of the present invention can be used for sludge digestion equipment such as a sewage treatment plant.

１ 消化設備、２ 消化槽、３ 破砕機、４ 循環ポンプ、５ 熱交換器、６ 上部吸入排出口、７ 下部吸入排出口、８ ドラフトチューブ、９ インペラ式撹拌機、Ｐ１〜Ｐ９ 管路、Ｖ１〜Ｖ８ 開閉弁 DESCRIPTION OF SYMBOLS 1 Digestion equipment, 2 Digestion tank, 3 Crusher, 4 Circulation pump, 5 Heat exchanger, 6 Upper suction discharge port, 7 Lower suction discharge port, 8 Draft tube, 9 Impeller type stirrer, P1-P9 pipeline, V1 ~ V8 On-off valve

Claims (7)

複数の消化槽を備える消化設備であって、前記複数の消化槽の最大直径が３．５ｍ以下であることを特徴とする、消化設備。   A digestion facility comprising a plurality of digesters, wherein the maximum diameter of the plurality of digesters is 3.5 m or less. 前記複数の消化槽が並列に接続されていることを特徴とする、請求項１に記載の消化設備。   The digestion equipment according to claim 1, wherein the plurality of digesters are connected in parallel. 前記複数の消化槽が直列に接続されていることを特徴とする、請求項１に記載の消化設備。   The digestion facility according to claim 1, wherein the plurality of digesters are connected in series. 前記複数の消化槽内の撹拌が、ポンプで被消化物を循環させることにより行われる、請求項１〜３の何れか１項に記載の消化設備。   The digestion equipment according to any one of claims 1 to 3, wherein the stirring in the plurality of digesters is performed by circulating the digested material with a pump. 前記複数の消化槽内の撹拌が、１つのポンプで被消化物を循環させることにより行われる、請求項４に記載の消化設備。   The digestion facility according to claim 4, wherein the stirring in the plurality of digesters is performed by circulating the digested material with a single pump. 前記被消化物の循環方向が、定期的に逆方向に変更される、請求項４又は５に記載の消化設備。   The digestion facility according to claim 4 or 5, wherein the direction of circulation of the digested material is periodically changed to the reverse direction. 前記複数の消化槽が、互いに連結されている、請求項１〜６の何れか１項に記載の消化設備。

The digestion equipment according to any one of claims 1 to 6, wherein the plurality of digesters are connected to each other.

JP2017065892A 2017-03-29 2017-03-29 Digestion equipment Active JP7215822B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017065892A JP7215822B2 (en) 2017-03-29 2017-03-29 Digestion equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017065892A JP7215822B2 (en) 2017-03-29 2017-03-29 Digestion equipment

Publications (2)

Publication Number Publication Date
JP2018167170A true JP2018167170A (en) 2018-11-01
JP7215822B2 JP7215822B2 (en) 2023-01-31

Family

ID=64018400

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017065892A Active JP7215822B2 (en) 2017-03-29 2017-03-29 Digestion equipment

Country Status (1)

Country Link
JP (1) JP7215822B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7446821B2 (en) 2020-01-17 2024-03-11 三菱化工機株式会社 Anaerobic digestion systems and methods

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50285B1 (en) * 1970-08-26 1975-01-08
JPS57197096A (en) * 1981-05-29 1982-12-03 Saburo Hashiguchi Digesting tank installation
JPH02115100A (en) * 1988-10-25 1990-04-27 Iwao Nakano Group b shochu distillation waste liquid methane fermentation tank constituted of collective body of multi-surface type tanks
JPH0487698A (en) * 1990-07-31 1992-03-19 Tadayoshi Doi Treatment of waste water
JP2005081182A (en) * 2003-09-04 2005-03-31 Univ Of Tsukuba Methane production method and two-phase methane production apparatus used for the same
JP2010527762A (en) * 2007-05-23 2010-08-19 ガンテフォート、ヴィルヘルム Fermenter for producing biogas from pumpable organic materials
JP2010273663A (en) * 2009-05-28 2010-12-09 Toshiro Sekine Method and apparatus for methane fermentation
JP2015051420A (en) * 2013-09-05 2015-03-19 鈴木　重信 Mobile methane gas fermentation generating device
JP2015051405A (en) * 2013-09-09 2015-03-19 ヴェオリア・ウォーター・ジャパン株式会社 Treatment apparatus and treatment method of organic matter-containing effluent

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69810003D1 (en) 1997-05-12 2003-01-23 Luigi Bruso Bortolozzo Bio Cleaner
CN103725605A (en) 2013-12-31 2014-04-16 陕西万源生物农业科技有限公司 Fermentation tank and fermentation system
JP6015796B2 (en) 2014-03-13 2016-10-26 栗田工業株式会社 Biological treatment apparatus and treatment method for organic waste water
CN204079581U (en) 2014-09-22 2015-01-07 武汉兴天宇环境工程有限公司 A kind of injection circulation reactor for sewage disposal
CN104528917A (en) 2014-12-31 2015-04-22 许中华 Sewage treatment device tank spliced in modularized mode

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50285B1 (en) * 1970-08-26 1975-01-08
JPS57197096A (en) * 1981-05-29 1982-12-03 Saburo Hashiguchi Digesting tank installation
JPH02115100A (en) * 1988-10-25 1990-04-27 Iwao Nakano Group b shochu distillation waste liquid methane fermentation tank constituted of collective body of multi-surface type tanks
JPH0487698A (en) * 1990-07-31 1992-03-19 Tadayoshi Doi Treatment of waste water
JP2005081182A (en) * 2003-09-04 2005-03-31 Univ Of Tsukuba Methane production method and two-phase methane production apparatus used for the same
JP2010527762A (en) * 2007-05-23 2010-08-19 ガンテフォート、ヴィルヘルム Fermenter for producing biogas from pumpable organic materials
JP2010273663A (en) * 2009-05-28 2010-12-09 Toshiro Sekine Method and apparatus for methane fermentation
JP2015051420A (en) * 2013-09-05 2015-03-19 鈴木　重信 Mobile methane gas fermentation generating device
JP2015051405A (en) * 2013-09-09 2015-03-19 ヴェオリア・ウォーター・ジャパン株式会社 Treatment apparatus and treatment method of organic matter-containing effluent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7446821B2 (en) 2020-01-17 2024-03-11 三菱化工機株式会社 Anaerobic digestion systems and methods

Also Published As

Publication number Publication date
JP7215822B2 (en) 2023-01-31

Similar Documents

Publication Publication Date Title
US20230286877A1 (en) Biosolids digester and process for biosolids production
AU2016273355B2 (en) Optimised energy efficiency hydrothermal carbonization method and device
CN106835186A (en) It is electrolysed the method and device that methane is produced in three Room
CN104232473B (en) Large, horizontal, continuous and dry-type biogas fermentation device and method
US8409439B1 (en) Pressurized digester vessel
EP2831003B1 (en) Apparatus for the production of biogas and related method
JP7215822B2 (en) Digestion equipment
CN111936612A (en) Reactor and apparatus for anaerobic digestion
CN106715343B (en) Hydrothermal carbonization reactor with optimal mixing of sludge and steam
KR102393195B1 (en) Oganic waste high speed drying fermentation apparatus in which durability and performance are strengthened
CN105110468B (en) A kind of method that integral biological reaction tank using multi-mode operation handles sewage
US10160942B2 (en) Fermenter supply method, biogas plant, and conversion method
KR100972219B1 (en) Anaerobic digestion device having inner wall and sparging stirrer
KR101046622B1 (en) Device for pretreatment the sludge using parallel-serial venture tube
KR101503116B1 (en) Digester
JP6651555B2 (en) Heat exchanger
CN107683329A (en) Improved biogas production system and preparation method thereof
KR20200101793A (en) Biogas reactors
KR101647115B1 (en) Horizontal type anaerobic digesting device for controlling methane concentration of biogas
CN104211173B (en) Modularization intelligent anaerobic reaction system
KR20150141406A (en) underwater aeration device having oxygen supply function
JP6027042B2 (en) Digestion tank operation method and digestion tank
RU2688356C1 (en) Biogas plant for processing of organic wastes into biogas and biofertilizers
CN204151141U (en) Modularization intelligent aerobic reaction system
CN104211178A (en) Modularized intelligent aerobic reaction system

Legal Events

Date Code Title Description
A625 Written request for application examination (by other person)

Free format text: JAPANESE INTERMEDIATE CODE: A625

Effective date: 20190719

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20200415

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20200602

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200803

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20201222

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210322

C60 Trial request (containing other claim documents, opposition documents)

Free format text: JAPANESE INTERMEDIATE CODE: C60

Effective date: 20210322

A911 Transfer to examiner for re-examination before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20210329

C21 Notice of transfer of a case for reconsideration by examiners before appeal proceedings

Free format text: JAPANESE INTERMEDIATE CODE: C21

Effective date: 20210330

A912 Re-examination (zenchi) completed and case transferred to appeal board

Free format text: JAPANESE INTERMEDIATE CODE: A912

Effective date: 20210514

C211 Notice of termination of reconsideration by examiners before appeal proceedings

Free format text: JAPANESE INTERMEDIATE CODE: C211

Effective date: 20210518

C22 Notice of designation (change) of administrative judge

Free format text: JAPANESE INTERMEDIATE CODE: C22

Effective date: 20220412

C22 Notice of designation (change) of administrative judge

Free format text: JAPANESE INTERMEDIATE CODE: C22

Effective date: 20220517

C13 Notice of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: C13

Effective date: 20220823

C19 Decision taken to dismiss amendment

Free format text: JAPANESE INTERMEDIATE CODE: C19

Effective date: 20220830

C30A Notification sent

Free format text: JAPANESE INTERMEDIATE CODE: C3012

Effective date: 20220830

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20221024

C23 Notice of termination of proceedings

Free format text: JAPANESE INTERMEDIATE CODE: C23

Effective date: 20221122

C03 Trial/appeal decision taken

Free format text: JAPANESE INTERMEDIATE CODE: C03

Effective date: 20221227

C30A Notification sent

Free format text: JAPANESE INTERMEDIATE CODE: C3012

Effective date: 20221227

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230119

R150 Certificate of patent or registration of utility model

Ref document number: 7215822

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350