JPH091179A - Anaerobic digestion treatment of highly concentrated organic waste water and equipment therefor - Google Patents

Anaerobic digestion treatment of highly concentrated organic waste water and equipment therefor

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Publication number
JPH091179A
JPH091179A JP15787595A JP15787595A JPH091179A JP H091179 A JPH091179 A JP H091179A JP 15787595 A JP15787595 A JP 15787595A JP 15787595 A JP15787595 A JP 15787595A JP H091179 A JPH091179 A JP H091179A
Authority
JP
Japan
Prior art keywords
anaerobic
treatment
solubilization
tank
organic
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
JP15787595A
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Japanese (ja)
Other versions
JP3614515B2 (en
Inventor
Susumu Hasegawa
進 長谷川
Kenji Katsura
健治 桂
Masahiko Miura
雅彦 三浦
Hideki Yokoyama
英樹 横山
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.)
Shinko Pantec Co Ltd
Original Assignee
Shinko Pantec Co Ltd
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Priority to JP15787595A priority Critical patent/JP3614515B2/en
Publication of JPH091179A publication Critical patent/JPH091179A/en
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Publication of JP3614515B2 publication Critical patent/JP3614515B2/en
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Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/20—Sludge processing

Landscapes

  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To enable the treatment by using an upflow anaerobic sludge blanket process equipment (UASB) or fixed bed treating equipment at the time of treating highly concentrated organic waste water contg. biodegradable organic solid matter. CONSTITUTION: In this treatment, waste water 10 contg. organic solid matter is separated by sedimentation in a sedimentation tank 14 and thereafter, a supernatant liquid A having a lesser organic solid matter content is treated by using an anaerobic treating equipment 18 such as upflow anaerobic sludge blanket process equipment (UASB), fixed bed treating equipment, or the like to subject the liquid A to anaerobic digestion treatment. At the same time, a liquid concentrate C of sedimented solid matter, that contains the organic solid matter separated by the sedimentation in the sedimentation tank 14, is subjected to solubilization treatment at a high temp. in a solubilization vessel 24. Thereafter, the resulting solubilization product, together with the waste water 10 contg. organic solid matter, is separated by sedimentation in the sedimentation tank 14 and then introduced into the anaerobic treating equipment 18, or directly introduced into the treating equipment 18.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、有機性汚泥、例えば、
下水処理場、屎尿処理場などの下水処理プロセスから排
出される生汚泥及び生物性汚泥、食品工場、化学工場な
どの排水処理プロセスなどから排出される有機性高濃度
汚泥などの、生物分解性有機性固形物を含む高濃度有機
性廃水の嫌気性消化処理方法及びそのための嫌気性消化
処理装置に関する。The present invention relates to organic sludge, for example,
Biodegradable organic substances such as raw sludge and biological sludge discharged from sewage treatment processes such as sewage treatment plants and human waste treatment plants, and organic high-concentration sludge discharged from wastewater treatment processes such as food plants and chemical plants. TECHNICAL FIELD The present invention relates to an anaerobic digestion treatment method for high-concentration organic wastewater containing volatile solids and an anaerobic digestion treatment apparatus therefor.

【０００２】[0002]

【従来の技術及び発明が解決しようとする課題】従来よ
り、でんぷん工場廃液、ビール工場廃液、酸発酵廃液等
の生物分解性有機性固形物を含む高濃度有機性廃水を処
理する場合には、メタン発酵槽にて30〜37℃の中温若し
くは50〜55℃の高温に維持してメタン発酵してメタン等
のガスに転換する嫌気消化する方法が知られている。こ
の場合、メタン発酵槽としては、固定床式処理装置と上
向流嫌気性汚泥床処理装置( 以下「UASB」と言う) が用
いられている。固定床式処理装置は、ビーズなどの担体
に微生物を固定して処理する装置であるのに対して、UA
SBは、図２に示したように、微生物の自己造粒作用を利
用してグラニュールを形成させて処理する装置である。2. Description of the Related Art Conventionally, when treating high-concentration organic wastewater containing biodegradable organic solids such as starch factory waste liquid, beer factory waste liquid, acid fermentation waste liquid, etc., An anaerobic digestion method is known in which a methane fermentation tank maintains a medium temperature of 30 to 37 ° C. or a high temperature of 50 to 55 ° C. to perform methane fermentation and convert it into a gas such as methane. In this case, as the methane fermentation tank, a fixed bed type treatment device and an upflow anaerobic sludge bed treatment device (hereinafter referred to as “UASB”) are used. The fixed-bed type treatment device is a device that fixes microorganisms on a carrier such as beads and treats them, whereas the UA
As shown in FIG. 2, the SB is a device that forms and processes granules by utilizing the self-granulating action of microorganisms.

【０００３】ところで、UASBは、微生物を大量に維持で
きるうえ、単位体積当たりの接触面積が大きく接触効率
が良好で負荷が大きくとれるため好ましいが、有機性廃
水に固形分(SS)が多量に含まれる場合には、UASBでは、
グラニュールが固形物に同伴して流出してしまい、グラ
ニュールを系内に維持できない場合がある。このため
に、通常は、図４に示したように、有機性固形物含有廃
水を沈殿槽で分離した後、その上澄液をUASBに導入して
処理するようにしている。しかしながら、この場合、沈
殿槽で沈殿分離した有機性固形物を含む沈殿固形物濃縮
液（汚泥）は、濃縮、消化、脱水、コンポスト化、焼却
といった工程を経て処理されるため、このような処理に
手間と費用がかかり好ましくなかった。By the way, UASB is preferable because it can maintain a large amount of microorganisms, has a large contact area per unit volume, has good contact efficiency, and can take a large load, but organic wastewater contains a large amount of solid content (SS). In case of UASB,
In some cases, the granules flow along with the solid matter, and the granules cannot be maintained in the system. For this reason, as shown in FIG. 4, the organic solid-containing wastewater is usually separated in a settling tank, and the supernatant is introduced into the UASB for treatment. However, in this case, since the precipitated solids concentrate (sludge) containing the organic solids separated and separated in the settling tank is processed through steps such as concentration, digestion, dehydration, composting and incineration, such treatment It was troublesome and costly, which was not preferable.

【０００４】このため、有機性廃水に固形分(SS)が多量
に含まれる場合には、固定床式処理装置が用いられてい
るが、固定床式処理装置では、槽内廃水線流速が極端に
遅いために、沈降性の高い固形物が廃水と同伴して流出
することができず、固形物が担体の間隙に捕捉されて、
目詰まりを起こし、液体分の通路を塞いでしまう。この
目詰まり箇所が増えるに伴って、液体分の通路が減少
し、目詰まりのない箇所しか液体分が流れなくなるため
に、液体と担体との接触が十分に行われなくなる「液体
分の短絡現象」が生じることとなる。そのため、可溶化
性有機物のガス化を目的とするメタン発酵槽では、この
液体分の短絡現象によって、廃水の滞留時間が短くなっ
て処理効率が極端に低下することになる。従って、この
場合には逆洗などで目詰まりを解消しているが、逆洗の
期間処理を停止することとなるうえ、多大な経費を要し
ている現状にある。このため、図５に示したように、有
機性固形物含有廃水を、熱アルカリ法、酵素添加法など
の物理化学的方法によって可溶化する方法も提案されて
はいるが、薬品費用などが嵩んでかえってコスト高とな
り好ましくなかった。Therefore, when the organic wastewater contains a large amount of solids (SS), a fixed bed type treatment apparatus is used. However, in the fixed bed type treatment apparatus, the wastewater linear velocity in the tank is extremely high. Due to the slowness, solid matter with high sedimentation cannot be discharged together with the wastewater, and the solid matter is trapped in the gaps of the carrier,
It causes clogging and blocks the passage of liquid. As the number of the clogging points increases, the passage of the liquid component decreases, and the liquid component flows only in the non-clogging places, so that the liquid and the carrier are not sufficiently contacted. Will occur. Therefore, in a methane fermentation tank for the purpose of gasifying a solubilizable organic substance, due to the short circuit phenomenon of the liquid component, the retention time of the waste water is shortened and the treatment efficiency is extremely lowered. Therefore, in this case, although the clogging is eliminated by backwashing or the like, the processing is stopped during the backwashing, and a large amount of cost is required. For this reason, as shown in FIG. 5, a method of solubilizing organic solid-containing wastewater by a physicochemical method such as a hot alkali method or an enzyme addition method has been proposed, but the chemical cost is high. On the contrary, the cost was high, which was not preferable.

【０００５】従って、本発明は、このような実情に鑑み
て、生物分解性有機性固形物を含む高濃度有機性廃水を
処理する場合において、有機性廃水に含まれる固形分(S
S)を可溶化処理することによって、接触効率が良好で負
荷が大きくとれる上向流嫌気性汚泥床処理装置(UASB)を
用いて処理することが可能な高濃度有機性廃水の嫌気性
消化処理方法及びそのための処理装置を提供することを
目的とする。Therefore, in view of the above situation, the present invention, when treating a high-concentration organic wastewater containing a biodegradable organic solid, contains the solid content (S) contained in the organic wastewater.
Anaerobic digestion treatment of high-concentration organic wastewater that can be treated using an upflow anaerobic sludge bed treatment unit (UASB), which has good contact efficiency and large load by solubilizing S). It is an object to provide a method and a processing device therefor.

【０００６】また、本発明は、このような実情に鑑み
て、生物分解性有機性固形物を含む高濃度有機性廃水を
処理する場合において、有機性廃水に含まれる固形分(S
S)を可溶化処理することによって、固定床式処理装置を
用いて逆洗頻度が少なくて処理することが可能な高濃度
有機性廃水の嫌気性消化処理方法及びそのための処理装
置を提供することをも目的とする。Further, in view of the above situation, the present invention provides a method for treating a high-concentration organic wastewater containing a biodegradable organic solid matter, wherein the solid content (S
(EN) A method for anaerobic digestion of high-concentration organic wastewater that can be processed with a fixed-bed-type processing device with a low backwash frequency by solubilizing S), and a processing device therefor. Also for the purpose.

【０００７】[0007]

【課題を解決するための手段】本発明に係る高濃度有機
性廃水の嫌気性消化処理方法及びそのための処理装置
は、前述した課題及び目的を達成するために発明なされ
たものであって、下記の（１）〜（１３）をその要旨と
するものである。The method for anaerobic digestion of high-concentration organic wastewater and the treatment apparatus therefor according to the present invention have been devised to achieve the above-mentioned objects and objects. (1) to (13) of the above are the gist.

【０００８】（１）生物分解性有機性固形物を含む高濃
度有機性廃水の嫌気性消化処理装置であって、有機性固
形物含有廃水を沈殿分離するための沈殿槽と、前記沈殿
槽で沈殿分離した有機性固形物の少ない上澄液を嫌気性
消化処理するための嫌気性処理装置と、前記沈殿槽で沈
殿分離した有機性固形物を含む沈殿固形物濃縮液を高温
条件で可溶化処理をするための可溶化槽とから構成し、
前記可溶化槽で可溶化した可溶化処理液を嫌気性処理装
置に導入するように構成したことを特徴とする高濃度有
機性廃水の嫌気性消化処理装置。(1) An anaerobic digestion treatment device for high-concentration organic wastewater containing biodegradable organic solids, comprising: a settling tank for separating and separating organic solids-containing wastewater; An anaerobic treatment device for anaerobic digestion of a supernatant liquid containing a small amount of precipitated organic solids, and solubilization of a precipitated solid concentrate containing the organic solids separated and separated in the precipitation tank under high temperature conditions. It consists of a solubilization tank for processing,
An anaerobic digestion treatment device for high-concentration organic wastewater, characterized in that the solubilization treatment liquid solubilized in the solubilization tank is introduced into the anaerobic treatment device.

【０００９】（２）前記可溶化槽で可溶化した可溶化処
理液を前記有機性固形物含有廃水とともに沈殿槽に導入
して沈殿分離した後に、嫌気性処理装置に導入するよう
に構成したことを特徴とする前述の（１）に記載の高濃
度有機性廃水の嫌気性消化処理装置。(2) The solubilization treatment liquid solubilized in the solubilization tank is introduced into the precipitation tank together with the organic solid-containing wastewater to separate the precipitate, and then introduced into the anaerobic treatment apparatus. An anaerobic digestion treatment device for high-concentration organic wastewater as described in (1) above.

【００１０】（３）前記沈殿槽で沈殿分離した沈殿固形
物濃縮液を可溶化槽で可溶化された可溶化処理液で加温
するための熱交換器を、前記沈殿槽から可溶化槽に至る
還流経路に設けたことを特徴とする前述の（１）又は
（２）に記載の高濃度有機性廃水の嫌気性消化処理装
置。(3) A heat exchanger for heating the concentrated precipitate solids separated and separated in the settling tank with the solubilization treatment liquid solubilized in the solubilization tank is transferred from the settling tank to the solubilization tank. An anaerobic digestion treatment device for high-concentration organic wastewater according to the above (1) or (2), characterized in that it is provided in a recirculating route.

【００１１】（４）前記嫌気性処理装置で発生したメタ
ンガスを燃焼するためのメタンガス燃焼装置を設けると
ともに、該メタンガス燃焼装置により生じた熱によっ
て、前記可溶化槽を加温するための加温経路を設けたこ
とを特徴とする前述の（１）から（３）のいずれかに記
載の高濃度有機性廃水の嫌気性消化処理装置。(4) A methane gas combustion device for burning the methane gas generated in the anaerobic treatment device is provided, and a heating path for heating the solubilization tank by the heat generated by the methane gas combustion device. The anaerobic digestion treatment device for high-concentration organic wastewater according to any one of the above (1) to (3), characterized by being provided.

【００１２】（５）前記嫌気性処理装置が、上向流嫌気
性汚泥床処理装置(UASB)であることを特徴とする前述の
（１）から（４）のいずれかに記載の高濃度有機性廃水
の嫌気性消化処理装置。(5) The high-concentration organic substance according to any one of (1) to (4) above, wherein the anaerobic treatment device is an upflow anaerobic sludge bed treatment device (UASB). Anaerobic digestion treatment equipment for anaerobic wastewater.

【００１３】（６）前記嫌気性処理装置が、固定床式処
理装置であることを特徴とする前述の（１）から（４）
のいずれかに記載の高濃度有機性廃水の嫌気性消化処理
装置。(6) The above-mentioned (1) to (4), wherein the anaerobic treatment device is a fixed bed type treatment device.
An anaerobic digestion treatment device for high-concentration organic wastewater according to any one of 1.

【００１４】（７）生物分解性有機性固形物を含む高濃
度有機性廃水の嫌気性消化処理方法であって、有機性固
形物含有廃水を沈殿槽で沈殿分離した後、分離した有機
性固形物の少ない上澄液を嫌気性処理装置にて嫌気性消
化処理するとともに、前記沈殿槽で沈殿分離した有機性
固形物を含む沈殿固形物濃縮液を、高温条件で可溶化処
理をするための可溶化槽で可溶化した後、可溶化した可
溶化処理液を嫌気性処理装置に導入することを特徴とす
る高濃度有機性廃水の嫌気性消化処理方法。(7) A method for anaerobic digestion of high-concentration organic wastewater containing biodegradable organic solid matter, wherein the organic solid matter-containing wastewater is precipitated and separated in a settling tank, and then the separated organic solid matter is separated. For the anaerobic digestion treatment of the supernatant liquid containing a small amount of substances in an anaerobic treatment device, and for the solubilization treatment of the precipitated solids concentrate containing the organic solids separated and separated in the precipitation tank under high temperature conditions. A method for anaerobic digestion of high-concentration organic wastewater, which comprises solubilizing in a solubilizing tank and introducing the solubilized solubilized treatment liquid into an anaerobic treatment apparatus.

【００１５】（８）可溶化した可溶化処理液を前記有機
性固形物含有廃水とともに沈殿槽で沈殿分離した後に、
嫌気性処理装置に導入することを特徴とする前述の
（７）に記載の高濃度有機性廃水の嫌気性消化処理方
法。(8) After the solubilized solubilized treatment liquid is precipitated and separated together with the organic solid-containing wastewater in a settling tank,
The method for anaerobic digestion of high-concentration organic wastewater according to (7) above, which is introduced into an anaerobic treatment apparatus.

【００１６】（９）前記沈殿槽で沈殿分離した沈殿固形
物濃縮液を可溶化槽で可溶化された可溶化処理液で加温
することを特徴とする前述の（７）又は（８）に記載の
高濃度有機性廃水の嫌気性消化処理方法。(9) In the above-mentioned (7) or (8), the concentrated solid solution of the precipitated solid separated and separated in the settling tank is heated by the solubilized treatment solution solubilized in the solubilizing tank. A method for anaerobic digestion treatment of high-concentration organic wastewater as described.

【００１７】（１０）前記嫌気性処理装置で発生したメ
タンガスを燃焼することにより生じた熱によって、前記
可溶化槽を加温することを特徴とする前述の（７）から
（９のいすれかに記載の高濃度有機性廃水の嫌気性消化
処理方法。(10) The solubilization tank is heated by the heat generated by burning the methane gas generated in the anaerobic treatment apparatus. (7) to (9) The method for anaerobic digestion of high-concentration organic wastewater according to.

【００１８】（１１）前記嫌気性処理装置が、上向流嫌
気性汚泥床処理装置(UASB)であることを特徴とする前述
の（７）から（１０）のいずれかに記載の高濃度有機性
廃水の嫌気性消化処理方法。(11) The high-concentration organic substance according to any one of (7) to (10) above, wherein the anaerobic treatment device is an upflow anaerobic sludge bed treatment device (UASB). Method for anaerobic digestion of organic wastewater.

【００１９】（１２）前記嫌気性処理装置が、固定床式
処理装置であることを特徴とする前述の（７）から（１
０）のいずれかに記載の高濃度有機性廃水の嫌気性消化
処理方法。(12) From the above (7) to (1), wherein the anaerobic treatment device is a fixed bed type treatment device.
The method for anaerobic digestion of highly concentrated organic wastewater according to any one of 0).

【００２０】（１３）前記可溶化処理を、60〜80℃の温
度範囲となるような条件で操作することを特徴とする前
述の（７）から（１２）のいずれかに記載の高濃度有機
性廃水の嫌気性消化処理方法。(13) The high-concentration organic material according to any one of (7) to (12) above, wherein the solubilization treatment is carried out under the condition that the temperature range is from 60 to 80 ° C. Method for anaerobic digestion of organic wastewater.

【００２１】すなわち、本発明者等が鋭意研究を行った
結果、有機性固形物含有廃水を沈殿分離した後、有機性
固形物の少ない上澄液を嫌気性消化処理するための上向
流嫌気性汚泥床処理装置(UASB)にて処理するとともに、
沈殿分離した有機性固形物を含む沈殿固形物濃縮液を高
温条件で可溶化処理して、UASBに導入することにより、
固形分を嫌うUASBに適用可能な水質とすることができる
ことを知見して本発明を完成したものである。That is, as a result of intensive studies by the present inventors, after the separation and separation of the organic solid-containing wastewater, the upward flow anaerobic gas for anaerobic digestion of the supernatant liquid containing a small amount of organic solids. In addition to treating with the sludge sludge bed treatment device (UASB),
By subjecting the precipitated solid concentrate containing the separated organic solid to a solubilization treatment under high temperature conditions and introducing it into UASB,
The present invention has been completed by finding that the water quality can be applied to UASB that dislikes solids.

【００２２】また、有機性固形物含有廃水を沈殿分離し
た後、有機性固形物の少ない上澄液を嫌気性消化処理す
るための固定床式処理装置にて処理するとともに、沈殿
分離した有機性固形物を含む沈殿固形物濃縮液を高温条
件で可溶化処理して、固定床式処理装置に導入すること
により、目詰まりを起こす原因となり、逆洗が必要とな
る沈降性の高い固形分を嫌う固定床式処理装置適用可能
な水質とすることができることを知見して本発明を完成
したものである。After the organic solid-containing wastewater is separated by precipitation, the supernatant containing a small amount of organic solids is processed by a fixed bed type processing device for anaerobic digestion, and the separated organic matter is separated. By solubilizing the precipitated solid concentrate containing solids under high temperature conditions and introducing it into a fixed bed type processing device, it causes clogging, and solid matter with high sedimentability that requires backwashing is removed. The present invention has been completed by finding that the water quality can be applied to a fixed bed type treatment device which is disliked.

【００２３】[0023]

【実施例】本発明では、有機性汚泥、例えば、下水処理
場、屎尿処理場などの下水処理プロセスから排出される
生汚泥及び生物性汚泥、或いは食品工場、化学工場など
の排水処理プロセスから排出されるでんぷん工場廃液、
ビール工場廃液、酸発酵廃液等の有機性高濃度汚泥など
の、生物分解性有機性固形物を含む高濃度有機性廃水
（以下「原廃水」と言う）を対象とする。EXAMPLES In the present invention, organic sludge, for example, raw sludge and biological sludge discharged from a sewage treatment process such as a sewage treatment plant and a human waste treatment plant, or a wastewater treatment process from a food factory, a chemical factory, etc. Drained starch factory effluent,
High-concentration organic wastewater containing biodegradable organic solids (hereinafter referred to as "raw wastewater") such as organic high-concentration sludge such as brewery wastewater and acid fermentation wastewater.

【００２４】図１に示したように、これらの原廃水貯留
槽10に貯留された原廃水が、経路12を介して沈殿槽14に
導入され、有機性固形物含有廃水が沈殿分離され、沈殿
分離された有機性固形物の少ない上澄液Ａが、経路16を
介して、嫌気性消化処理するための上向流嫌気性汚泥床
処理装置(UASB)18に導入されるようになっている。この
場合、UASB18としては、図２に示したようなものが使用
可能であり、これにより嫌気処理された処理水Ｂは、放
流先の基準値により必要であれば、さらに活性汚泥法な
どにより処理した後、下水若しくは河川などに放流され
るようになっている。As shown in FIG. 1, the raw wastewater stored in these raw wastewater storage tanks 10 is introduced into a settling tank 14 via a route 12, and organic solid-containing wastewater is separated by sedimentation and settling. The separated supernatant A containing a small amount of organic solids is introduced into the upward flow anaerobic sludge bed treatment unit (UASB) 18 for anaerobic digestion treatment via a route 16. . In this case, as the UASB18, the one shown in FIG. 2 can be used, and the treated water B anaerobically treated by the UASB18 is further treated by the activated sludge method or the like if necessary according to the reference value of the discharge destination. After that, it will be discharged into sewage or rivers.

【００２５】一方、沈殿槽14で沈殿分離した有機性固形
物を含む沈殿固形物濃縮液Ｃは、還流経路20を介して可
溶化槽24に導入され、高温条件で嫌気的若しくは好気的
に有機性汚泥の可溶化が行われる。この場合、高温条件
において用いられる嫌気性若しくは好気性微生物の接種
菌体（好熱菌）は、例えば、従来の好気性若しくは嫌気
性消化槽又は下水処理場活性汚泥余剰汚泥などから微生
物を培養することによって得られるものである。また、
可溶化槽24の最適温度は、好ましくは、50〜90℃の温度
範囲となるような条件で操作するが、その高温処理対象
である沈殿固形物濃縮液Ｃに含まれる有機性固形物を分
解する好熱菌の種類によって異なるものであり、例え
ば、下水余剰汚泥から分離した好熱菌の場合には、微生
物（好熱菌）による可溶化反応と熱による物理化学的な
熱分解の両作用が同時に効率良く十分に生じうるよう
に、高温条件における温度汚泥を60℃〜80℃の範囲、好
ましくは70℃の範囲で操作するようにする。何れにして
も、微生物（好熱菌）による可溶化反応と熱による物理
化学的な熱分解の両作用が同時に効率良く十分に生じう
るように、微生物の種類に応じて、50〜90℃の温度範囲
となるように設定すればよい。On the other hand, the precipitated solids concentrate C containing the organic solids separated and separated in the precipitation tank 14 is introduced into the solubilization tank 24 through the reflux path 20 and anaerobically or aerobically under high temperature conditions. Solubilization of organic sludge is performed. In this case, the inoculum of anaerobic or aerobic microorganisms used under high temperature conditions (thermophilic bacterium) is, for example, a microorganism cultivated from a conventional aerobic or anaerobic digestion tank or sewage treatment plant activated sludge surplus sludge. It is obtained by Also,
The optimum temperature of the solubilization tank 24 is preferably operated under conditions such that the temperature range is 50 to 90 ° C., but the organic solid matter contained in the precipitated solid concentrate C, which is the high temperature treatment target, is decomposed. Depending on the type of thermophilic bacterium used, for example, in the case of thermophilic bacterium separated from sewage surplus sludge, both solubilization reaction by microorganisms (thermophilic bacterium) and physicochemical thermal decomposition by heat At the same time, the temperature sludge under high temperature conditions is operated in the range of 60 to 80 ° C, preferably in the range of 70 ° C so that it can be efficiently and sufficiently produced. In any case, depending on the type of the microorganism, the solubilization reaction by the microorganism (thermophilic bacterium) and the physicochemical thermal decomposition by heat can both occur efficiently and sufficiently at a temperature of 50 to 90 ° C. The temperature may be set within the temperature range.

【００２６】さらに、可溶化槽24で好気的に微生物分解
をするための装置として、従来の散気装置を具備してな
るもの、嫌気性で微生物分解をするための装置として
は、（1)槽内の液を循環することにより撹拌する方法、
（2)生成ガスを循環曝気することにより撹拌する方法、
（3)撹拌翼などの撹拌機を設置する方法、（4)活性微生
物固定手段を有するなど、活性微生物と処理対象汚泥と
を効率的に接触させる手段を具備したものであれば使用
可能である。なお、この場合、反応槽としては、バッチ
式でも、連続方式の何れも使用可能である。Further, as an apparatus for aerobically decomposing microorganisms in the solubilization tank 24, a conventional air diffuser is provided, and an apparatus for anaerobic microorganism decomposing is (1) ) A method of stirring by circulating the liquid in the tank,
(2) A method of stirring by circulating aeration of the produced gas,
(3) A method of installing a stirrer such as a stirring blade, and (4) having a means for fixing the active microorganisms, such as a means for efficiently contacting the activated microorganisms with the sludge to be treated can be used. . In this case, as the reaction tank, either a batch system or a continuous system can be used.

【００２７】このように、可溶化槽24で可溶化した可溶
化処理液Ｄは、経路26を介して、還流経路20に設けられ
た熱交換器28を経由し、経路30を介して、経路12に合流
されて有機性固形物含有廃水とともに沈殿槽14に導入し
て沈殿分離され、前述したように処理サイクルが繰り返
されるようになっている。なお、熱交換器28では、沈殿
槽14で沈殿分離した沈殿固形物濃縮液Ｃを、可溶化槽24
で可溶化された可溶化処理液Ｄで加温することにより、
熱損失を極力抑えるようになっている。また、可溶化槽
24で可溶化した可溶化処理液Ｄは、UASB18によって再負
荷できるように固形分(SS)が3000ppm 以下となってい
る。As described above, the solubilized treatment liquid D solubilized in the solubilization tank 24 passes through the route 26, the heat exchanger 28 provided in the reflux route 20, and the route 30. It is merged with 12 and introduced into the settling tank 14 together with the organic solid-containing wastewater to be separated for precipitation, and the processing cycle is repeated as described above. In the heat exchanger 28, the precipitated solid concentrate C separated and precipitated in the precipitation tank 14 is solubilized in the solubilization tank 24.
By heating with the solubilization treatment liquid D solubilized in
It is designed to minimize heat loss. Also, the solubilization tank
The solubilization treatment liquid D solubilized in 24 has a solid content (SS) of 3000 ppm or less so that it can be reloaded by the UASB18.

【００２８】さらに、UASB18において発生したメタンガ
スＥは、経路32を介してメタンガス燃焼装置34に導入さ
れ、メタンガス燃焼装置34においてメタンガスの燃焼に
より生じた熱が、加温経路36を介して可溶化槽24を加温
するように構成されている。Further, the methane gas E generated in the UASB 18 is introduced into the methane gas combustor 34 via the path 32, and the heat generated by the combustion of the methane gas in the methane gas combustor 34 is solubilized in the solubilization tank via the heating path 36. It is configured to heat 24.

【００２９】この場合、メタンガス燃焼装置34としては
特に限定されるものではなく、通常のガスバーナーを具
備した自然通風式炉内燃焼型燃焼塔などの燃焼装置が使
用可能である。このように、可溶化槽24での放熱分のエ
ネルギーが、UASB18での嫌気処理によって発生する余剰
メタンの燃焼によって補充されることになるので、エネ
ルギー的にも非常に効率が良い。In this case, the methane gas combustion device 34 is not particularly limited, and a combustion device such as a natural ventilation type internal combustion type combustion tower equipped with an ordinary gas burner can be used. In this way, the energy of the heat radiation in the solubilization tank 24 is replenished by the combustion of the surplus methane generated by the anaerobic treatment in the UASB 18, so that it is very efficient in terms of energy.

【００３０】また、沈殿槽14で沈殿分離した有機性固形
物を含む沈殿固形物濃縮液（汚泥）の一部は、系内に生
物難分解性固形物又は無機性固形物が蓄積しないよう
に、経路15を介して適宜排出され、濃縮、脱水処理が行
われ、廃棄するようになっている。この場合、排出され
る汚泥は、高温槽である可溶化槽24を通過しているため
に、溶存ガスが少なく沈降性の優れた汚泥であるので、
濃縮脱水処理が容易である。Further, a part of the precipitated solids concentrate (sludge) containing the organic solids precipitated and separated in the settling tank 14 should be prevented from accumulating biodegradable solids or inorganic solids in the system. , Is appropriately discharged via the route 15, concentrated, dehydrated, and discarded. In this case, since the sludge discharged has passed through the solubilization tank 24 that is a high-temperature tank, it is a sludge with a small amount of dissolved gas and excellent sedimentation properties.
Concentrated dehydration treatment is easy.

【００３１】図３は、本発明の高濃度有機性廃水の嫌気
性消化処理方法及びそのための嫌気性消化処理装置の第
２の実施例の概略を示す図である。FIG. 3 is a diagram showing the outline of a second embodiment of the anaerobic digestion treatment method for high-concentration organic wastewater and the anaerobic digestion treatment apparatus therefor according to the present invention.

【００３２】本実施例は、基本的には前述した第１の実
施例と同様な構成であり、同じ構成部材には同一の参照
番号を示している。第１の実施例と相違するとところ
は、第１の実施例において可溶化槽24で可溶化した可溶
化処理液Ｄを、経路26を介して、還流経路20に設けられ
た熱交換器28を経由し、経路30を介して、経路12に合流
されて有機性固形物含有廃水とともに沈殿槽14に導入し
て沈殿分離された後に、上向流嫌気性汚泥床処理装置(U
ASB)18に導入する代わりに、本実施例では、可溶化処理
液Ｄを直接、経路30' を介して、上向流嫌気性汚泥床処
理装置(UASB)18に導入するようにした点が相違する。す
なわち、可溶化槽24で可溶化が十分に行わる場合には、
沈殿分離の必要がないためである。This embodiment has basically the same structure as that of the first embodiment described above, and the same constituent members are designated by the same reference numerals. The difference from the first embodiment is that the solubilization treatment liquid D solubilized in the solubilization tank 24 in the first embodiment is passed through the path 26 to the heat exchanger 28 provided in the reflux path 20. Via the route 30, after being merged into the route 12 and introduced into the settling tank 14 together with the organic solid-containing wastewater to be separated by sedimentation, the upflow anaerobic sludge bed treatment device (U
In this embodiment, instead of being introduced into the ASB) 18, the solubilization treatment liquid D is directly introduced into the upward flow anaerobic sludge bed treatment device (UASB) 18 via the route 30 ′. Be different. That is, when the solubilization is sufficiently performed in the solubilization tank 24,
This is because there is no need to separate the precipitate.

【００３３】なお、上述した第１及び第２の実施例で
は、嫌気性消化処理装置として、上向流嫌気性汚泥床処
理装置(UASB)18を用いたが、固定床式処理装置を用いる
ことが可能であり、その場合、目詰まりを起こす沈降性
の高い固形物が流入することがないので、逆洗頻度が少
なくてすみ、操業効率が上昇可能である。In the first and second embodiments described above, the upflow anaerobic sludge bed treatment device (UASB) 18 was used as the anaerobic digestion treatment device, but a fixed bed treatment device should be used. In that case, since solid matter having a high sedimentation property that causes clogging does not flow in, the frequency of backwashing can be small and the operating efficiency can be increased.

【００３４】実施例１ 内径100mm 、高さ1mの耐熱塩化ビニル製の熱媒を循環さ
せるジャケット方式の円筒型反応槽を用いて、温度70
℃、通気量0.1vvm、反応液量4Lで運転した。処理廃液
は、でんぷん工場廃水を30分沈殿分離した沈殿物（沈殿
率SV30＝10％、固形物濃度SS＝1.3 ％、揮発性有機物質
含有割合VSS/SS＝98％）を用い、２日毎に種汚泥0.8Lに
対して沈殿固形物3.2Lを添加した。2.5 日の滞留時間
で、約60％の不溶性でんぷん固形物が可溶化された。な
お、30分沈殿の上澄み液中にもかなりの固形物(SS とし
て2300ppm)が残留するが、これらは粒子径が小さく、長
時間静置してもほとんど沈降することなく、固定床処理
装置において目詰まりの原因となる可能性はきわめて少
ないものであった一方、従来法との比較を下記の表１に
示した。表１の結果から明らかなように、本発明のよう
に、好熱菌によって可溶化処理を行った方が、固定床処
理装置において目詰まりの原因となる即沈降性固形物の
割合を１／２以下に減ずることができることが判明し
た。 Example 1 A jacket type cylindrical reaction tank in which a heat medium made of heat-resistant vinyl chloride having an inner diameter of 100 mm and a height of 1 m was circulated was used, and the temperature was 70
It was operated at 0 ° C., an air flow rate of 0.1 vvm, and a reaction liquid volume of 4 L. For the treatment waste liquid, use a sediment (sedimentation rate SV30 = 10%, solids concentration SS = 1.3%, volatile organic substance content ratio VSS / SS = 98%) obtained by separating and separating the starch factory wastewater for 30 minutes. 3.2 L of precipitated solid was added to 0.8 L of seed sludge. At a residence time of 2.5 days, about 60% of the insoluble starch solids were solubilized. A considerable amount of solid matter (2300 ppm as SS) remains in the supernatant of the sedimentation for 30 minutes, but these have a small particle size and hardly settled even when left standing for a long time. Although the possibility of causing clogging was extremely low, a comparison with the conventional method is shown in Table 1 below. As is clear from the results shown in Table 1, when the solubilization treatment was performed with thermophilic bacteria as in the present invention, the ratio of the immediate sedimentation solid matter that causes clogging in the fixed bed treatment apparatus was 1 / It turned out that it can be reduced to 2 or less.

【００３５】[0035]

【表１】 [Table 1]

【００３６】[0036]

【発明の作用・効果】本発明の高濃度有機性廃水の嫌気
性消化処理方法及びそのための処理装置によれば、有機
性固形物含有廃水を沈殿分離した後、有機性固形物の少
ない上澄液を嫌気性消化処理するための、上向流嫌気性
汚泥床処理装置(UASB)又は固定床式処理装置などの嫌気
性処理装置にて処理するとともに、沈殿分離した有機性
固形物を含む沈殿固形物濃縮液を高温条件で可溶化処理
して、これを有機性固形物含有廃水とともに沈殿分離し
て、嫌気性処理装置に導入するように構成したので、以
下のような顕著で特有な作用効果を奏する極めて優れた
発明である。According to the method for anaerobic digestion of high-concentration organic wastewater and the treatment apparatus therefor according to the present invention, after the organic-solid-containing wastewater is separated by sedimentation, the supernatant containing less organic solids is obtained. For the anaerobic digestion of liquid, the anaerobic treatment equipment such as an upflow anaerobic sludge bed treatment equipment (UASB) or a fixed bed treatment equipment is used, and the sediment containing the separated organic solid is precipitated. The solid concentrate was solubilized under high temperature conditions, and it was separated by precipitation together with the organic solid-containing wastewater and introduced into the anaerobic treatment equipment. It is an extremely excellent invention that produces effects.

【００３７】（１）生物分解性有機性固形物を含む高濃
度有機性廃水を処理する場合において、処理すべき有機
性廃水中の固形分(SS)が可溶化され少量になり、UASBで
も、グラニュールが固形物に同伴して流出することがな
く、グラニュールを系内に維持でき、接触効率が良好で
負荷が大きくとれる上向流嫌気性汚泥床処理装置(UASB)
を用いて処理することが可能である。(1) When treating a high-concentration organic wastewater containing a biodegradable organic solid, the solid content (SS) in the organic wastewater to be treated is solubilized to a small amount, and even in UASB, An upflow anaerobic sludge bed treatment device (UASB) that does not allow granules to accompany solids and flow out, can maintain granules in the system, has good contact efficiency, and can take a large load.
Can be used for processing.

【００３８】（２）沈殿槽で沈殿分離した有機性固形物
を含む沈殿固形物濃縮液（汚泥）は、高温槽である可溶
化槽を通過しているために、溶存ガスが少なく沈降性の
優れた汚泥であるので、濃縮、脱水処理が容易で、コス
ト低減などが図れる。(2) Since the precipitated solids concentrate (sludge) containing the organic solids separated and separated in the settling tank has passed through the solubilization tank which is a high temperature tank, the dissolved gas is small and the sedimentation property is low. Since it is an excellent sludge, it can be easily concentrated and dehydrated, and cost can be reduced.

【００３９】（３）生物分解性有機性固形物を含む高濃
度有機性廃水を処理する場合において、処理すべき有機
性廃水中の固形分が、目詰まりを起こす原因となる沈降
性の高い固形分がほとんど含まれないので、目詰まりに
よる液体分の短絡現象が生じることがなく、そのため、
逆洗などの操作が不要となり、処理効率が低下すること
がない。(3) When treating a high-concentration organic wastewater containing a biodegradable organic solid matter, the solid content in the organic wastewater to be treated is a highly sedimentable solid matter that causes clogging. Since it contains almost no liquid, there is no short circuit of liquid due to clogging.
Operations such as backwashing become unnecessary, and the processing efficiency does not decrease.

【００４０】（４）沈殿槽で沈殿分離した沈殿固形物濃
縮液を可溶化槽で可溶化された可溶化処理液で加温する
ための熱交換器を、沈殿槽から可溶化槽に至る還流経路
に設けた構成のものでは、熱損失を極力抑えることが可
能である。(4) A heat exchanger for heating the precipitated solid concentrate concentrated and separated in the settling tank with the solubilization treatment liquid solubilized in the solubilization tank is refluxed from the settling tank to the solubilization tank. With the structure provided in the path, it is possible to suppress heat loss as much as possible.

【００４１】（５）嫌気性処理装置で発生したメタンガ
スを燃焼するためのメタンガス燃焼装置を設けるととも
に、該メタンガス燃焼装置により生じた熱によって、可
溶化槽を加温するための加温経路を設けた可溶化槽での
放熱分のエネルギーが、UASBでの嫌気処理によって発生
する余剰メタンの燃焼によって補充されることになるの
で、エネルギー的にも非常に効率が良い。(5) A methane gas combustor for burning the methane gas generated in the anaerobic treatment apparatus is provided, and a heating path for heating the solubilization tank by the heat generated by the methane gas combustor is provided. The energy of the heat released in the solubilization tank will be supplemented by the combustion of the surplus methane generated by the anaerobic treatment in UASB, so it is very energy efficient.

【図面の簡単な説明】[Brief description of the drawings]

【図１】図１は、本発明の高濃度有機性廃水の嫌気性消
化処理方法及びそのための嫌気性消化処理装置の実施例
の概略を示す図である。FIG. 1 is a diagram schematically showing an embodiment of an anaerobic digestion treatment method for high-concentration organic wastewater and an anaerobic digestion treatment apparatus therefor according to the present invention.

【図２】図２は、上向流嫌気性汚泥床処理装置(UASB)の
概略図である。FIG. 2 is a schematic diagram of an upflow anaerobic sludge bed treatment device (UASB).

【図３】図３は、本発明の高濃度有機性廃水の嫌気性消
化処理方法及びそのための嫌気性消化処理装置の第２の
実施例の概略を示す図である。FIG. 3 is a diagram schematically showing a second embodiment of the anaerobic digestion treatment method for high-concentration organic wastewater and the anaerobic digestion treatment apparatus therefor according to the present invention.

【図４】図４は、従来の上向流嫌気性汚泥床処理装置(U
ASB)の使用状態を示す概略図である。FIG. 4 is a conventional upflow anaerobic sludge bed treatment device (U
FIG. 3 is a schematic view showing a usage state of ASB).

【図５】図５は、従来の固定床式処理装置の使用状態を
示す概略図である。FIG. 5 is a schematic view showing a usage state of a conventional fixed bed type processing apparatus.

【符号の説明】[Explanation of symbols]

１０・・・ 原廃水貯留槽 １４・・・ 沈殿槽 １８・・・ 上向流嫌気性汚泥床処理装置(UASB) ２０・・・ 還流経路 ２４・・・ 可溶化槽 ２８・・・ 熱交換器 ３４・・・ メタンガス燃焼装置 Ａ・・・ 上澄液 Ｂ・・・ 処理水 Ｃ・・・ 沈殿固形物濃縮液 Ｄ・・・ 可溶化処理液 10 ... Raw wastewater storage tank 14 ... Settling tank 18 ... Upflow anaerobic sludge bed treatment device (UASB) 20 ... Reflux path 24 ... Solubilization tank 28 ... Heat exchanger 34 ... Methane gas combustor A ... Supernatant liquid B ... Treated water C ... Precipitated solid concentrate D ... Solubilized treatment liquid

フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０２Ｆ 9/00 ５０４ Ｃ０２Ｆ 9/00 ５０４Ｅ ５０４Ａ 11/04 11/04 Ｚ (72)発明者 横山 英樹 兵庫県神戸市須磨区南落合１丁目13−７ 292号室Continuation of the front page (51) Int.Cl. 6 Identification number Reference number within the agency FI Technical display location C02F 9/00 504 C02F 9/00 504E 504A 11/04 11/04 Z (72) Inventor Hideki Yokoyama Kobe, Hyogo Prefecture 292, Minami-ochiai, Suma-ku, Yokohama

Claims (13)

【特許請求の範囲】[Claims] 【請求項１】 生物分解性有機性固形物を含む高濃度有
機性廃水の嫌気性消化処理装置であって、 有機性固形物含有廃水を沈殿分離するための沈殿槽と、 前記沈殿槽で沈殿分離した有機性固形物の少ない上澄液
を嫌気性消化処理するための嫌気性処理装置と、 前記沈殿槽で沈殿分離した有機性固形物を含む沈殿固形
物濃縮液を高温条件で可溶化処理をするための可溶化槽
とから構成し、 前記可溶化槽で可溶化した可溶化処理液を嫌気性処理装
置に導入するように構成したことを特徴とする高濃度有
機性廃水の嫌気性消化処理装置。1. An anaerobic digestion treatment apparatus for highly concentrated organic wastewater containing biodegradable organic solids, comprising: a settling tank for separating and separating the wastewater containing organic solids; An anaerobic treatment device for anaerobic digestion of the separated supernatant containing a small amount of organic solids, and a solubilization treatment of a precipitated solid concentrate containing the organic solids separated and separated in the precipitation tank under high temperature conditions. Anaerobic digestion of high-concentration organic wastewater, which is characterized in that it is configured to introduce a solubilization treatment liquid solubilized in the solubilization tank into an anaerobic treatment apparatus. Processing equipment. 【請求項２】 前記可溶化槽で可溶化した可溶化処理液
を前記有機性固形物含有廃水とともに沈殿槽に導入して
沈殿分離した後に、嫌気性処理装置に導入するように構
成したことを特徴とする請求項１に記載の高濃度有機性
廃水の嫌気性消化処理装置。2. The solubilization treatment liquid solubilized in the solubilization tank is introduced into a sedimentation tank together with the organic solid-containing wastewater to separate the precipitate, and then introduced into an anaerobic treatment apparatus. The anaerobic digestion treatment device for high-concentration organic wastewater according to claim 1. 【請求項３】 前記沈殿槽で沈殿分離した沈殿固形物濃
縮液を可溶化槽で可溶化された可溶化処理液で加温する
ための熱交換器を、前記沈殿槽から可溶化槽に至る還流
経路に設けたことを特徴とする請求項１又は２に記載の
高濃度有機性廃水の嫌気性消化処理装置。3. A heat exchanger for heating the precipitated solid concentrate concentrated and separated in the settling tank with the solubilization treatment liquid solubilized in the solubilization tank is provided from the settling tank to the solubilization tank. The anaerobic digestion treatment apparatus for high-concentration organic wastewater according to claim 1 or 2, which is provided in a reflux path. 【請求項４】 前記嫌気性処理装置で発生したメタンガ
スを燃焼するためのメタンガス燃焼装置を設けるととも
に、該メタンガス燃焼装置により生じた熱によって、前
記可溶化槽を加温するための加温経路を設けたことを特
徴とする請求項１から３のいずれかに記載の高濃度有機
性廃水の嫌気性消化処理装置。4. A methane gas combustor for combusting methane gas generated in the anaerobic treatment apparatus is provided, and a heating path for heating the solubilization tank by heat generated by the methane gas combustor is provided. The anaerobic digestion treatment device for high-concentration organic wastewater according to any one of claims 1 to 3, which is provided. 【請求項５】 前記嫌気性処理装置が、上向流嫌気性汚
泥床処理装置(UASB)であることを特徴とする請求項１か
ら４のいずれかに記載の高濃度有機性廃水の嫌気性消化
処理装置。5. The high concentration organic wastewater anaerobic according to claim 1, wherein the anaerobic treatment device is an upflow anaerobic sludge bed treatment device (UASB). Digestion processing equipment. 【請求項６】 前記嫌気性処理装置が、固定床式処理装
置であることを特徴とする請求項１から４のいずれかに
記載の高濃度有機性廃水の嫌気性消化処理装置。6. The anaerobic digestion treatment device for high-concentration organic wastewater according to claim 1, wherein the anaerobic treatment device is a fixed bed treatment device. 【請求項７】 生物分解性有機性固形物を含む高濃度有
機性廃水の嫌気性消化処理方法であって、 有機性固形物含有廃水を沈殿槽で沈殿分離した後、分離
した有機性固形物の少ない上澄液を嫌気性処理装置にて
嫌気性消化処理するとともに、 前記沈殿槽で沈殿分離した有機性固形物を含む沈殿固形
物濃縮液を、高温条件で可溶化処理をするための可溶化
槽で可溶化した後、可溶化した可溶化処理液を嫌気性処
理装置に導入することを特徴とする高濃度有機性廃水の
嫌気性消化処理方法。7. A method for anaerobic digestion of high-concentration organic wastewater containing biodegradable organic solids, comprising separating organic solids-containing wastewater in a settling tank, and then separating the separated organic solids. An anaerobic digester is used for anaerobic digestion of a supernatant liquid containing less solid, and a solid precipitate concentrate containing an organic solid precipitated and separated in the precipitation tank is solubilized under high temperature conditions. A method for anaerobic digestion of high-concentration organic wastewater, which comprises introducing the solubilized solubilized treatment liquid into an anaerobic treatment apparatus after solubilization in a solubilization tank. 【請求項８】 可溶化した可溶化処理液を前記有機性固
形物含有廃水とともに沈殿槽で沈殿分離した後に、嫌気
性処理装置に導入することを特徴とする請求項７に記載
の高濃度有機性廃水の嫌気性消化処理方法。8. The high-concentration organic substance according to claim 7, wherein the solubilized treatment liquid thus solubilized is introduced into an anaerobic treatment apparatus after being precipitated and separated together with the organic solid-containing wastewater in a sedimentation tank. Method for anaerobic digestion of organic wastewater. 【請求項９】 前記沈殿槽で沈殿分離した沈殿固形物濃
縮液を可溶化槽で可溶化された可溶化処理液で加温する
ことを特徴とする請求項７又は８に記載の高濃度有機性
廃水の嫌気性消化処理方法。9. The high-concentration organic substance according to claim 7 or 8, wherein the precipitated solid matter concentrated liquid precipitated and separated in the precipitation tank is heated with the solubilization treatment liquid solubilized in the solubilization tank. Method for anaerobic digestion of organic wastewater. 【請求項１０】 前記嫌気性処理装置で発生したメタン
ガスを燃焼することにより生じた熱によって、前記可溶
化槽を加温することを特徴とする請求項７から９のいす
れかに記載の高濃度有機性廃水の嫌気性消化処理方法。10. The high temperature according to claim 7, wherein the solubilization tank is heated by heat generated by burning methane gas generated in the anaerobic treatment apparatus. Method for anaerobic digestion of concentrated organic wastewater. 【請求項１１】 前記嫌気性処理装置が、上向流嫌気性
汚泥床処理装置(UASB)であることを特徴とする請求項７
から１０のいずれかに記載の高濃度有機性廃水の嫌気性
消化処理方法。11. The anaerobic treatment device is an upflow anaerobic sludge bed treatment device (UASB).
11. The anaerobic digestion treatment method for high-concentration organic wastewater according to any one of 1 to 10. 【請求項１２】 前記嫌気性処理装置が、固定床式処理
装置であることを特徴とする請求項７から１０のいずれ
かに記載の高濃度有機性廃水の嫌気性消化処理方法。12. The method for anaerobic digestion treatment of high-concentration organic wastewater according to claim 7, wherein the anaerobic treatment apparatus is a fixed bed type treatment apparatus. 【請求項１３】 前記可溶化処理を、60〜80℃の温度範
囲となるような条件で操作することを特徴とする請求項
７から１２のいずれかに記載の高濃度有機性廃水の嫌気
性消化処理方法。13. The anaerobic high-concentration organic wastewater according to claim 7, wherein the solubilization treatment is carried out under conditions such that the temperature range is 60 to 80 ° C. Digestion treatment method.
JP15787595A 1995-06-23 1995-06-23 Anaerobic digestion treatment method of high concentration organic wastewater and treatment apparatus therefor Expired - Lifetime JP3614515B2 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000301116A (en) * 1999-04-16 2000-10-31 Mitsubishi Kakoki Kaisha Ltd Treatment of organic waste
JP2004160346A (en) * 2002-11-12 2004-06-10 Hideken Sekkei:Kk Anaerobic digestion tank and anaerobic/aerobic filter bed method
EP1516857A1 (en) * 2003-09-16 2005-03-23 Centre de Recherche Mèze-Hérault-Ceremher Process and installation for the purification of domestic or agri-industrial effluents by anaerobic digestion
JP2005125202A (en) * 2003-10-22 2005-05-19 Sumitomo Heavy Ind Ltd Organic waste water treatment apparatus
JP2005144361A (en) * 2003-11-17 2005-06-09 Osaka Gas Co Ltd Organic waste treating method
JP2005169329A (en) * 2003-12-15 2005-06-30 Mitsubishi Kakoki Kaisha Ltd Treatment method for organic waste

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000301116A (en) * 1999-04-16 2000-10-31 Mitsubishi Kakoki Kaisha Ltd Treatment of organic waste
JP2004160346A (en) * 2002-11-12 2004-06-10 Hideken Sekkei:Kk Anaerobic digestion tank and anaerobic/aerobic filter bed method
EP1516857A1 (en) * 2003-09-16 2005-03-23 Centre de Recherche Mèze-Hérault-Ceremher Process and installation for the purification of domestic or agri-industrial effluents by anaerobic digestion
JP2005125202A (en) * 2003-10-22 2005-05-19 Sumitomo Heavy Ind Ltd Organic waste water treatment apparatus
JP2005144361A (en) * 2003-11-17 2005-06-09 Osaka Gas Co Ltd Organic waste treating method
JP2005169329A (en) * 2003-12-15 2005-06-30 Mitsubishi Kakoki Kaisha Ltd Treatment method for organic waste

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