JPH07155758A - Waste water treating device - Google Patents

Waste water treating device

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Publication number
JPH07155758A
JPH07155758A JP30664393A JP30664393A JPH07155758A JP H07155758 A JPH07155758 A JP H07155758A JP 30664393 A JP30664393 A JP 30664393A JP 30664393 A JP30664393 A JP 30664393A JP H07155758 A JPH07155758 A JP H07155758A
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JP
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Application
Patent type
Prior art keywords
membrane
waste water
water
allowed
flow
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.)
Pending
Application number
JP30664393A
Other languages
Japanese (ja)
Inventor
Masumi Kobayashi
Kenji Watari
Katsuyuki Yanone
謙治 亘
真澄 小林
勝行 矢ノ根
Original Assignee
Mitsubishi Rayon Co Ltd
三菱レイヨン株式会社
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

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Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • Y02W10/15Aerobic processes

Abstract

PURPOSE: To obtain the discharged water quality always stabilized irrespective of change in flow rate of raw water by immersing a membrane separator attracted by a suction pump in a reaction tank, arranging a diffuser below it, and also inserting a membrane separator in an overflow line.
CONSTITUTION: Waste water is allowed to flow from a waste water inflow port 8 into an aerator 1 equipped with a diffuser 7 at the lower part, where organic materials, etc., turning into BOD components and COD components and decomposed by decomposing force of active sludge. After a suction pump 6 is operated to filter the treated water through a membrane module 4, it is sent to a disinfecting tank 2. At this time, when the waste water of the set quantity or above is allowed to flow into the tank 2 from the waste water inflow port 8 caused by any reason, the treated water is allowed to flow out from an overflow line 3. At this time, the treated water is allowed to flow out through a membrane module 5 being a membrane separator inserted in the overflow line. In this way, the discharged water quality always stabilized irrespective of change in flow rate of waste water is obtained.
COPYRIGHT: (C)1995,JPO

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、浄化槽(単独、合併問わず)、産業廃水処理装置等を始めとする廃水処理装置に関する。 BACKGROUND OF THE INVENTION This invention, septic tank (alone, whether mergers), relates to wastewater treatment apparatus including the industrial wastewater treatment apparatus. 特に生物処理を行い、その後固液分離を行うような用途に有効に利用され、更に流量調製槽等を持たない小規模な装置に於て有効に利用される。 In particular performs a biological treatment, it is effectively used in applications such as subsequent carrying out solid-liquid separation is effectively utilized At a small device further no flow preparation tank or the like.

【0002】 [0002]

【従来の技術】従来の生物処理を利用した廃水処理装置は、最もシンプルなシステムの例を用いて説明すると、 Conventional wastewater treatment apparatus using a biological process, will be described using the example of the most simple system,
曝気槽(活性汚泥槽)、沈澱槽、消毒槽から構成されており、各々の槽への流体の移動はオーバーフローで行われていた。 Aeration tank (activated sludge tank), sedimentation tank, are composed of disinfecting bath, the movement of fluid into each of the vessel was done in an overflow. そのため原水量が一時的に変動しても放流水の量が変動するのみであり、原水(汚水)が曝気槽等から溢れ出てしまうような事故は皆無であった。 Therefore the original amount of water is only the amount of even discharged water temporarily change varies, raw water (sewage) is accident that would overflow from the aeration tank or the like there was no.

【0003】近年、放流水質の向上、汚泥の高密度培養等を目的として、精密濾過膜又は限外濾過膜を用いて固液分離を行う廃水処理装置の検討が行われている。 Recently, improvement in effluent quality, for the purpose of high-density culture like sludge, study of waste water treatment apparatus for performing solid-liquid separation using a microfiltration or ultrafiltration membrane has been performed. その際膜モジュールは一般に使用される加圧濾過方式ではなく、モジュールを浸漬し二次側を吸引し濾液を採取する所謂吸引濾過方式が採用されることが多い。 Its Saimaku module is not a pressure filtration method generally used, so-called suction filtration method is often adopted for immersing the module collecting the filtrate was aspirated secondary side. 基本的なシステムは曝気槽(活性汚泥槽兼膜浸漬槽)、消毒槽から構成される。 Aeration tank basic system (activated sludge tank and membrane immersion tank), and a disinfecting bath.

【0004】曝気槽から消毒槽への流体の移動は当然膜を介して行われ、ポンプや水位差等がドライビングフォースとして用いられてきた。 [0004] movement of fluid from the aeration tank to the disinfecting chamber takes place through the course membranes, pumps and the water level difference or the like have been used as driving force. 曝気槽から消毒槽への流体の移動速度(膜の透過流束)は膜の急激な目詰まりを抑えるため、一定速度で行われることが多く、また吸引停止を繰り返す間欠吸引濾過が行われることもある。 Since the moving speed of the fluid from the aeration tank to the disinfecting bath (permeation flux of the membrane) will suppress the rapid clogging of the membrane, which is often carried out at a constant rate and the intermittent suction filtration is performed to repeat the suction stop there is also. そのため、曝気槽の容量は流量変動を吸収できるような大きなものが必要であった。 Therefore, the capacity of the aeration tank was required large as to absorb the flow variations. 或は曝気槽の前に流量調整槽を設けて流量調整を行っていた。 Or had done flow rate adjustment by providing the flow rate adjusting tank before aeration tank.

【0005】 [0005]

【発明が解決しようとする課題】然し、上記のシステムでは曝気槽容量の増大にしろ、流量調整槽の設置にしろ設置スペースが大きくなることは否めない。 [SUMMARY OF THE INVENTION] However, white to increase the aeration tank capacity in the above system, it is undeniable that the installation space white the installation of the flow control tank increases. また、曝気槽容量をいかに大きくしたところで原水流量の一時的増加に対して安全なシステムとは言い難い。 Further, it is hard to say that safe system against transient increase in the raw water flow rate was the aeration tank capacity and how large.

【0006】本発明の目的は、一定流量を膜を介して吸引濾過しながら固液分離を行う廃水処理システムに於て、原水の流量変動に対しても常に安定した放流水水質が得られ、設置スペース的にも過剰なスペースを占めない廃水処理装置を供給することにある。 An object of the present invention, At a wastewater treatment system for performing suction filtration while solid-liquid separation through a membrane constant flow, constantly stable discharge water quality can be obtained even with respect to the flow rate fluctuation of the raw water, It is to provide a waste water treatment apparatus which does not occupy excessive space to installation space basis.

【0007】 [0007]

【課題を解決するための手段】本発明の要旨は次の通りである。 Means for Solving the Problems The gist of the present invention is as follows. (1)反応槽、反応槽内に浸漬配置した膜分離装置A、 (1) reaction vessel, membrane separation apparatus A was immersed placed in a reaction vessel,
膜分離装置Aに連通して設けた吸引ポンプ及び膜分離装置Aの下方に配置した散気装置からなる廃水処理装置に於て、オーバーフローのラインを有し、且つ該ライン中に膜分離装置Bが存在することを特徴とする廃水処理装置。 At a waste water treatment apparatus comprising a diffuser disposed below the membrane separation apparatus A communication with the suction pump and the membrane separation device A which is provided to have an overflow line, and the membrane separation device B in the line wastewater treatment apparatus characterized by but there. (2)膜分離装置A及びBが中空糸膜を利用したものであることを特徴とする上記(1)記載の装置。 (2) The membrane separation apparatus A and B are characterized in that utilizes the hollow fiber membranes (1) device according.

【0008】以下本発明を図面に基づき詳細に説明する。 [0008] will be described in detail with reference to the accompanying drawings The present invention will. 図1は本発明の一実施例を示す概略的な合体構成図である。 Figure 1 is a schematic combined block diagram showing one embodiment of the present invention. 本発明の廃水処理装置は、膜浸漬槽を兼ねる曝気槽1、消毒槽2、オーバーフローライン3、膜浸漬層に浸漬する膜モジュール4、オーバーフローラインに取り付けられる膜モジュール5、吸引ポンプ6、散気装置7、廃水流入口8、処理水流出口9で構成される。 Waste water treatment apparatus of the present invention, the aeration tank 1 also serving as a film immersion bath, disinfecting bath 2, overflow line 3, the membrane module 4 of immersing the membrane immersion layer, membrane module 5 that is attached to the overflow line, the suction pump 6, air diffuser 7, the waste water inlet 8, comprised of the processing water outlet 9.

【0009】上記構成により、廃水流入口8より曝気槽へ流入した廃水は、曝気槽中の活性汚泥の分解力によりBOD成分COD成分となる有機物等が分解される。 [0009] With this configuration, the waste water that has flowed from the wastewater inlet 8 to the aeration tank, organic substances as a BOD component COD components by decomposition activity of activated sludge in the aeration tank is decomposed. 曝気槽中のMLSS(廃水と活性汚泥の混合液中の浮遊懸濁物質量;mg/L)は廃水中の有機物濃度にも左右されるが、数千から数万である。 (Floating suspended substances amount of mixture of waste water and activated sludge; mg / L) MLSS in the aeration tank has also depends on the concentration of organic substances in waste water, which is thousands or tens of thousands. 曝気槽に用いられる材質としては、一般に使用されている公知のもの(FRP、 The material used in the aeration tank, known ones commonly used (FRP,
SUS等)が使用できる。 SUS, etc.) can be used. 曝気槽の容量としては、通常の使用状態では満水にならないだけの容量を確保することが必要である。 The capacity of the aeration tank, it is in normal use is necessary to secure a capacity sufficient not to full level.

【0010】吸引ポンプ6を駆動させることにより、有機物等が生分解された処理液は膜モジュール4を介して濾過され消毒槽2へ送られる。 [0010] By driving the suction pump 6, organic matter is biodegraded processing solution is filtered through a membrane module 4 is sent to the disinfecting chamber 2. その際膜モジュール4に使用した分離膜の孔径より大きな物質は膜面でカットされる。 Large material is cut by the film surface than the hole diameter of the separation membrane used in the Saimaku module 4. 分離膜の孔径は特には問わないが、細菌等を完全にカットするためには0.2μ以下であることが望ましい。 Pore ​​size of the separation membrane is not limited particularly, but it is desirable to fully cut such as bacteria are below 0.2.mu.. 分離膜の材質も特には問わないが、活性汚泥の中で使用する場合には耐微生物性の強い材質であることが望ましい。 The material of the separation membrane is also not limited particularly, but it is preferable when used in the activated sludge is a strong material having 耐微 biological properties. 膜モジュールの形状も特には問わない。 The shape of the membrane module also does not matter particularly.

【0011】何らかの理由により、廃水流入口8より設定以上の廃水が流入してきた場合には、オーバーフローライン3より処理水が流出する。 [0011] for some reason, when the setting or wastewater from the wastewater inlet 8 has flowed, the treated water flowing out of the overflow line 3. その際膜モジュール5 The Saimaku module 5
を介して処理液は流出する。 Treatment liquid through the outflow. 膜モジュールに使用する膜の孔径、材質等は上記と全く同じ範囲を挙げることができる。 Pore ​​size membranes used in the membrane module, material and the like can be mentioned exactly the same range as above.

【0012】膜面積的には短時間で多くの流量を流さなければならないので、大きめの膜面積を設定する必要がある。 [0012] Since the membrane area basis must flow a lot of flow rate in a short period of time, it is necessary to set a larger membrane area. 膜モジュール4と5の形状、材質、孔径等は同一であっても異なっていても構わない。 The shape of the membrane module 4 and 5, material, pore diameter, etc. are may be different even in the same.

【0013】膜モジュール4は散気装置7より送られるエアーの上昇撹拌流によってスクラビング洗浄されるが、膜モジュール5は洗浄は行われず、目詰まりは激しい。 [0013] While membrane module 4 is scrubbed cleaned by the air rising agitation stream sent from the air diffuser 7, the membrane module 5 is cleaned is not performed, clogging intense. 従ってオーバーフローラインはあくまで安全装置という位置付けが必要である。 Therefore overflow line is needed positioned as only safety device.

【0014】またこれらの用途の場合、膜モジュール4 [0014] In the case of these applications, the membrane module 4
は散気によって振動し良好に膜面が洗浄されるという面から、膜モジュール5は容積当たりの膜面積をできるだけ多く得たいという面から、中空糸膜モジュールを使用することが好ましい。 Terms because vibrations satisfactorily membrane surface is cleaned by the air diffusion from the surface of the membrane module 5 is desired to obtain as much as possible the membrane area per volume, it is preferable to use a hollow fiber membrane module.

【0015】膜モジュール4の透過流束及び吸引圧等は、使用する膜モジュールによって最適な範囲を選定することが必要であり、極端に吸引圧等を高く運転した場合には、膜面閉塞が進んでしまい、安定濾過が行われない場合がある。 The membrane permeation flux and the suction pressure or the like of the module 4, it is necessary to select the optimum range by a membrane module to be used, when operating high extreme suction pressure or the like, the membrane surface clogging willing will, there is a case in which stable filtration is not performed. 消毒槽2以降は通常の廃水処理装置と同様にオーバーフローで放流が行われる。 Disinfecting chamber 2 and later likewise discharged by overflow and conventional waste water treatment apparatus is performed.

【0016】 [0016]

【発明の効果】本発明によれば、一定流量を膜を介して吸引濾過しながら固液分離を行う廃水処理システムに於て、原水の流量変動に対しても常に安定した放流水水質が得られ、設置スペース的にも過剰なスペースを占めない廃水処理装置を供給することができる。 According to the present invention, always stable discharge water quality is obtained even for a constant flow rate At a wastewater treatment system for performing suction filtration while solid-liquid separation through a membrane, the raw water flow rate variation is, it is possible to supply the waste water treatment apparatus which does not occupy excessive space to installation space basis.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の好適な実施例を示す概略的な全体構成図を示す。 1 shows a schematic overall block diagram showing a preferred embodiment of the present invention.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 曝気槽 2 消毒槽 3 オーバーフローライン 4 膜モジュール(曝気槽内浸漬用) 5 膜モジュール(オーバーフローライン取付用) 6 吸引ポンプ 7 散気装置 8 廃水流入口 9 処理水流出口 10 ブロア 1 the aeration tank 2 and disinfecting bath 3 overflow line 4 membrane modules (for aeration tank immersion) 5 membrane module (for overflow line attached) 6 suction pump 7 air diffuser 8 wastewater inlet 9 treated water outlet 10 blower

Claims (2)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 反応槽、反応槽内に浸漬配置した膜分離装置A、膜分離装置Aに連通して設けた吸引ポンプ及び膜分離装置Aの下方に配置した散気装置からなる廃水処理装置に於て、オーバーフローのラインを有し且つ該ライン中に膜分離装置Bが存在することを特徴とする廃水処理装置。 1. A reaction vessel, the reaction vessel immersion arranged membrane separation unit A, the waste water treatment apparatus comprising a diffuser disposed below the suction pump and the membrane separation device A which is provided in communication with the membrane separator A wastewater treatment apparatus, wherein at Te, the presence of the membrane separation apparatus B in and the line have the overflow line.
  2. 【請求項2】 膜分離装置A及びBが中空糸膜を利用したものであることを特徴とする請求項1記載の装置。 2. A film separation apparatus according to claim 1, wherein the A and B is obtained by utilizing a hollow fiber membrane.
JP30664393A 1993-12-07 1993-12-07 Waste water treating device Pending JPH07155758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30664393A JPH07155758A (en) 1993-12-07 1993-12-07 Waste water treating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30664393A JPH07155758A (en) 1993-12-07 1993-12-07 Waste water treating device

Publications (1)

Publication Number Publication Date
JPH07155758A true true JPH07155758A (en) 1995-06-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP30664393A Pending JPH07155758A (en) 1993-12-07 1993-12-07 Waste water treating device

Country Status (1)

Country Link
JP (1) JPH07155758A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6893568B1 (en) 1999-11-18 2005-05-17 Zenon Environmental Inc. Immersed membrane filtration system and overflow process
US7160463B2 (en) 2002-06-18 2007-01-09 U.S. Filter Wastewater Group, Inc. Methods of minimizing the effect of integrity loss in hollow fibre membrane modules
JP2007050375A (en) * 2005-08-19 2007-03-01 Mitsubishi Rayon Eng Co Ltd Wastewater treatment apparatus and wastewater treatment method
US7361274B2 (en) 2002-08-21 2008-04-22 Siemens Water Technologies Corp. Aeration method
US8840783B2 (en) 2007-05-29 2014-09-23 Evoqua Water Technologies Llc Water treatment membrane cleaning with pulsed airlift pump
US8858796B2 (en) 2005-08-22 2014-10-14 Evoqua Water Technologies Llc Assembly for water filtration using a tube manifold to minimise backwash
US8956464B2 (en) 2009-06-11 2015-02-17 Evoqua Water Technologies Llc Method of cleaning membranes
US9022224B2 (en) 2010-09-24 2015-05-05 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US9023206B2 (en) 2008-07-24 2015-05-05 Evoqua Water Technologies Llc Frame system for membrane filtration modules
WO2016178366A1 (en) * 2015-05-07 2016-11-10 住友電気工業株式会社 Membrane separation active sludge treatment method and membrane separation active sludge treatment system
US9533261B2 (en) 2012-06-28 2017-01-03 Evoqua Water Technologies Llc Potting method
US9604166B2 (en) 2011-09-30 2017-03-28 Evoqua Water Technologies Llc Manifold arrangement
US9675938B2 (en) 2005-04-29 2017-06-13 Evoqua Water Technologies Llc Chemical clean for membrane filter
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
US9764289B2 (en) 2012-09-26 2017-09-19 Evoqua Water Technologies Llc Membrane securement device
US9815027B2 (en) 2012-09-27 2017-11-14 Evoqua Water Technologies Llc Gas scouring apparatus for immersed membranes
US9868834B2 (en) 2012-09-14 2018-01-16 Evoqua Water Technologies Llc Polymer blend for membranes
US9914097B2 (en) 2010-04-30 2018-03-13 Evoqua Water Technologies Llc Fluid flow distribution device
US9925499B2 (en) 2011-09-30 2018-03-27 Evoqua Water Technologies Llc Isolation valve with seal for end cap of a filtration system
US9962865B2 (en) 2012-09-26 2018-05-08 Evoqua Water Technologies Llc Membrane potting methods

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7052610B2 (en) 1999-11-18 2006-05-30 Zenon Environmental Inc. Immersed membrane filtration system and overflow process
US6893568B1 (en) 1999-11-18 2005-05-17 Zenon Environmental Inc. Immersed membrane filtration system and overflow process
US7160463B2 (en) 2002-06-18 2007-01-09 U.S. Filter Wastewater Group, Inc. Methods of minimizing the effect of integrity loss in hollow fibre membrane modules
US7344645B2 (en) 2002-06-18 2008-03-18 Siemens Water Technologies Corp. Methods of minimising the effect of integrity loss in hollow fibre membrane modules
US7361274B2 (en) 2002-08-21 2008-04-22 Siemens Water Technologies Corp. Aeration method
US9675938B2 (en) 2005-04-29 2017-06-13 Evoqua Water Technologies Llc Chemical clean for membrane filter
JP2007050375A (en) * 2005-08-19 2007-03-01 Mitsubishi Rayon Eng Co Ltd Wastewater treatment apparatus and wastewater treatment method
US8894858B1 (en) 2005-08-22 2014-11-25 Evoqua Water Technologies Llc Method and assembly for water filtration using a tube manifold to minimize backwash
US8858796B2 (en) 2005-08-22 2014-10-14 Evoqua Water Technologies Llc Assembly for water filtration using a tube manifold to minimise backwash
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
US8840783B2 (en) 2007-05-29 2014-09-23 Evoqua Water Technologies Llc Water treatment membrane cleaning with pulsed airlift pump
US9206057B2 (en) 2007-05-29 2015-12-08 Evoqua Water Technologies Llc Membrane cleaning with pulsed airlift pump
US9573824B2 (en) 2007-05-29 2017-02-21 Evoqua Water Technologies Llc Membrane cleaning with pulsed airlift pump
US9023206B2 (en) 2008-07-24 2015-05-05 Evoqua Water Technologies Llc Frame system for membrane filtration modules
US8956464B2 (en) 2009-06-11 2015-02-17 Evoqua Water Technologies Llc Method of cleaning membranes
US9914097B2 (en) 2010-04-30 2018-03-13 Evoqua Water Technologies Llc Fluid flow distribution device
US9022224B2 (en) 2010-09-24 2015-05-05 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US9630147B2 (en) 2010-09-24 2017-04-25 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US9925499B2 (en) 2011-09-30 2018-03-27 Evoqua Water Technologies Llc Isolation valve with seal for end cap of a filtration system
US9604166B2 (en) 2011-09-30 2017-03-28 Evoqua Water Technologies Llc Manifold arrangement
US9533261B2 (en) 2012-06-28 2017-01-03 Evoqua Water Technologies Llc Potting method
US9868834B2 (en) 2012-09-14 2018-01-16 Evoqua Water Technologies Llc Polymer blend for membranes
US9962865B2 (en) 2012-09-26 2018-05-08 Evoqua Water Technologies Llc Membrane potting methods
US9764289B2 (en) 2012-09-26 2017-09-19 Evoqua Water Technologies Llc Membrane securement device
US9815027B2 (en) 2012-09-27 2017-11-14 Evoqua Water Technologies Llc Gas scouring apparatus for immersed membranes
WO2016178366A1 (en) * 2015-05-07 2016-11-10 住友電気工業株式会社 Membrane separation active sludge treatment method and membrane separation active sludge treatment system

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