JP2001232160A - Membrane filter - Google Patents

Membrane filter

Info

Publication number
JP2001232160A
JP2001232160A JP2000042753A JP2000042753A JP2001232160A JP 2001232160 A JP2001232160 A JP 2001232160A JP 2000042753 A JP2000042753 A JP 2000042753A JP 2000042753 A JP2000042753 A JP 2000042753A JP 2001232160 A JP2001232160 A JP 2001232160A
Authority
JP
Japan
Prior art keywords
hypochlorite
membrane
residual chlorine
sensor
chlorine concentration
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
JP2000042753A
Other languages
Japanese (ja)
Inventor
Teruhiro Kitazawa
照啓 北沢
Original Assignee
Hitachi Plant Eng & Constr Co Ltd
日立プラント建設株式会社
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
Application filed by Hitachi Plant Eng & Constr Co Ltd, 日立プラント建設株式会社 filed Critical Hitachi Plant Eng & Constr Co Ltd
Priority to JP2000042753A priority Critical patent/JP2001232160A/en
Publication of JP2001232160A publication Critical patent/JP2001232160A/en
Application status is Pending legal-status Critical

Links

Abstract

PROBLEM TO BE SOLVED: To provide a membrane filter which copes easily with the fluctuation of a property of raw water and the good and undesirable injection states of hypochlorite and by which efficient membrane filtration is carried out over a long period of time. SOLUTION: This membrane filter has a drain pipeline 9 for discharging wastewater and a pipeline 16 for injecting a hypochlorite when a membrane module is periodically cleaned physically. The filter has furthermore a residual chlorine concentration sensor 12 for sampling the wastewater from the pipeline 9 and measuring the residual chlorine concentration in waste water and a pressure sensor 17 arranged on the way of the pipeline 16. The filter is constituted so that the cleaning frequency of the membrane module and/or the time taken to inject the hypochlorite when backward washed are automatically controlled according to the value measured by the sensor 12 when the injection state of hypochlorite is judged to be good with the sensor 17.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、河川水、井水、湖沼水等を原水とし、これを膜モジュールを用いてろ過することによって公共の上水を製造し、その膜モジュールを定期的に物理洗浄する膜ろ過装置に関する。 BACKGROUND OF THE INVENTION The present invention is, river water, well water, lake water or the like as a raw water which produce a public water supply by filtering using a membrane module, the membrane module periodically It relates to a membrane filtration apparatus for physical cleaning.

【0002】 [0002]

【従来の技術】従来、膜モジュールを用いてろ過を行う膜ろ過装置においては、一定時間ろ過を継続した後、膜面に付着した濁質による汚れを洗浄除去するため、物理洗浄を行う。 Conventionally, in a membrane filtration apparatus for performing filtering using a membrane module, after continuing for a predetermined time filtration, to washing away dirt by contaminants adhering to the membrane surface, performing physical cleaning. 物理洗浄においては、処理水を逆洗ポンプによって膜の裏面から透過させる(以下、逆洗という。)ことによって膜の汚れを剥離させる。 In physical cleaning, the treated water is transmitted from the back surface of the membrane by backwashing pump (hereinafter, referred to as backwash.) To separate the membrane fouling by. このとき、 At this time,
逆洗水に膜面の生物ファウリングを防止するため、次亜塩素酸ナトリウム等の次亜塩素酸塩を一定濃度(通常、 To prevent biological fouling film surface backwash water, constant hypochlorite sodium hypochlorite concentrations (usually,
3〜5ppm程度)、一定時間(20〜30秒程度)添加していた。 About 3~5ppm), a certain period of time (about 20 to 30 seconds) has been added. また、通常、逆洗頻度や次亜塩素酸塩の注入時間は、タイマーによって決めて一定条件として洗浄を行っている。 Also, usually, the injection time of the backwash frequency and hypochlorite is performing cleaning as certain conditions determined by the timer. このように、逆洗頻度や次亜塩素酸塩の注入時間を一定とした場合、原水の性状が悪化(例えば、大雨による濁質急上昇、藻類の大量発生など)したことによって膜面での濁質の負荷が増大し、それまでの逆洗条件では充分に生物ファウリングの発生を抑制しきれず、膜の運転圧力が上昇してしまい、膜ろ過設備全体の運転に支障をきたす恐れがあった。 Thus, when a constant infusion time of backwashing frequency and hypochlorite, properties of raw water deteriorates (e.g., suspended solid spike by heavy rain, outbreak etc. algae) turbidity of the film surface by the load quality increases sufficiently not completely suppress the occurrence of biological fouling in backwash condition until then, the operating pressure of the membrane will be increased and there may compromise the operation of the entire membrane filtration equipment . また、生物ファウリングが発生する要因として前記の原水性状の悪化の他に、逆洗時に注入する次亜塩素酸塩の注入管の一部に次亜塩素酸のガス化又は空気の混入によるガス滞留部が発生し、これにより次亜塩素酸塩の注入不良が起こり、塩素が膜面に達しないことがある。 The gas according to other deterioration of the raw water properties as a factor biological fouling occurs, in part to contamination of the gasification or air hypochlorite injection tubes hypochlorite to be injected during backwashing retention portion is generated, thereby occur implantation failure of hypochlorite, it may chlorine does not reach the film surface.

【0003】 [0003]

【発明が解決しようとする課題】本発明は、原水の性状の変動及び/又は次亜塩素酸塩の注入状態の良否に容易に対処でき、長期間にわたって効率のよい膜ろ過を行いうる膜ろ過装置を提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention will be readily able to cope with the quality of the injection state of the fluctuation and / or hypochlorite raw water properties, film can perform efficient membrane filtration filtration over a long period of time and to provide a device.

【0004】 [0004]

【課題を解決するための手段】本発明は、膜モジュールを定期的に物理洗浄する際に排水可能なドレン管を備えた膜ろ過装置において、このドレン管から排水を採取し、排水中の残留塩素濃度を測定する残留塩素濃度センサーを備え、そのセンサー値に応じて膜モジュールの洗浄頻度及び/又は逆洗時における次亜塩素酸塩の注入時間が自動的に制御されることを特徴とする膜ろ過装置を提供するものである。 Means for Solving the Problems The present invention provides a membrane filtration apparatus having a drainable drain pipe in regularly physical washing the membrane module, and collecting effluent from the drain pipe, the residual in the waste water comprising a residual chlorine concentration sensor for measuring the chlorine concentration, characterized in that the injection time of the hypochlorite is automatically controlled during the washing frequency and / or backwash of the membrane module according to the sensor value there is provided a membrane filtration device. また、本発明は、次亜塩素酸塩の注入管を備えた膜ろ過装置において、この注入管の途中に圧力センサーを備えたことを特徴とする膜ろ過装置を提供するものである。 The present invention also provides a membrane filtration apparatus provided with an injection tube hypochlorite, there is provided a membrane filtration apparatus characterized by comprising a pressure sensor in the middle of the injection tube.

【0005】本発明は、さらに、膜モジュールを定期的に物理洗浄する際に排水可能なドレン管と次亜塩素酸塩の注入管とを備えた膜ろ過装置において、このドレン管から排水を採取し、排水中の残留塩素濃度を測定する残留塩素濃度センサーを備え、さらに次亜塩素酸塩の注入管の途中に圧力センサーを備え、この圧力センサーが次亜塩素酸塩注入状態を良好と判定したときに、残留塩素濃度センサー値に応じて膜モジュールの洗浄頻度及び/ [0005] The present invention is further in a membrane filtration apparatus provided with an injection tube drainable drain pipe and hypochlorite in regularly physical washing the membrane module, collecting drainage from the drain pipe and, with the residual chlorine concentration sensor for measuring the residual chlorine concentration in the waste water, further comprising a pressure sensor in the middle of the injection pipe hypochlorite, determining the pressure sensor good hypochlorite injection state when cleaning frequency of the membrane module according to the residual chlorine concentration sensor value and /
又は逆洗時における次亜塩素酸塩の注入時間が自動的に制御されることを特徴とする膜ろ過装置を提供するものである。 Or there is provided a membrane filtration apparatus characterized in that infusion times of hypochlorite during backwashing is automatically controlled.

【0006】 [0006]

【発明の実施の形態】次に、図面を参照して本発明をさらに具体的に説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a detailed explanation of the present invention with reference to the drawings. 図1は、本発明の一実施例を示す膜ろ過装置の系統図である。 Figure 1 is a system diagram of a membrane filtration apparatus according to an embodiment of the present invention. 図1に示した膜ろ過装置は、主として原水槽1、膜モジュール2、逆洗水槽3及び次亜塩素酸塩槽4から成り、原水はポンプ5により弁6を介して膜モジュール2に送水され、ここでろ過されたろ過水は、ろ過水流出管7から流出する。 Membrane filtration apparatus shown in Figure 1, mainly raw water tank 1, a membrane module 2 consists backwash water tank 3 and hypochlorite tank 4, the raw water is water in the membrane module 2 via the valve 6 by the pump 5 here it is filtered the filtrate exits the filtered water outlet pipe 7. 膜ろ過装置を運転する際、一定頻度で膜モジュール2の逆洗が行われ、逆洗水槽3の水を逆洗ポンプ8によって膜モジュール2の裏面から透過させる。 When operating the membrane filtration device, backwash of the membrane module 2 is performed at a constant frequency, and transmits from the back surface of the membrane module 2 water backwash water tank 3 by backwash pump 8. このとき、逆洗水に次亜塩素酸塩槽4から次亜塩素酸塩注入ポンプ18により次亜塩素酸塩、例えば次亜塩素酸ナトリウムが添加される。 At this time, hypochlorite, such as sodium hypochlorite is added to the backwash water from hypochlorite tank 4 by hypochlorite infusion pump 18.
次亜塩素酸塩を添加した逆洗水の塩素濃度は、3〜5p Chlorine concentration of backwash water with the addition of hypochlorite, 3~5P
pm程度が一般的である。 About pm is common. 逆洗排水は、膜モジュール2 Backwash waste water, membrane module 2
から排水弁10を介してドレン管9から排出される。 It is discharged from the drain pipe 9 through the drain valve 10 from.

【0007】図示した膜ろ過装置においては、ドレン管9にサンプリング弁11が設けられており、さらに残留塩素濃度センサー12が接続されている。 [0007] In the membrane filtration device shown is a sampling valve 11 is provided in the drain pipe 9 is further connected to the residual chlorine concentration sensor 12. 排水弁10が開となると同時にサンプリング弁11を開として残留塩素濃度センサー12に排水サンプルを供給する。 Supplying wastewater sample to the residual chlorine concentration sensor 12 when the drain valve 10 is opened sampling valve 11 simultaneously is opened. 膜モジュール2の運転が正常に行われ、膜面に生物ファウリングが発生していない場合には、逆洗排水の残留塩素が正常値(0.5〜1.5ppm)で検出されるが、生物ファウリングが発生した場合には、逆洗排水の残留塩素は著しく低下する(0〜0.3ppm)。 Operation of the membrane module 2 is performed normally, if the film surface is not biologically fouling occurs, the residual chlorine backwash waste water is detected by the normal value (0.5~1.5ppm), when the biological fouling occurs, residual chlorine in the backwash effluent is significantly decreased (0~0.3ppm).

【0008】残留塩素濃度センサー12によって測定された値が、ある設定値以下を示した場合、膜モジュールが生物ファウリングを発生したと判断し、生物ファウリングを解消又は改善することを目的として膜ろ過装置の逆洗頻度を上げる(一般的に20〜60分に1回逆洗する)か、あるいは次亜塩素酸塩の注入時間を延長する(一般的には20〜30秒間)。 [0008] values ​​measured by the residual chlorine concentration sensor 12, is a case showing a set value or less, it is determined that the membrane module is generated biological fouling, membrane for the purpose of eliminating or improve biological fouling increase the backwash frequency of the filter (typically backwashing once 20-60 minutes) or to extend the injection time of the hypochlorite (typically 20-30 seconds). これらの動作は、残留塩素濃度センサー12の低下信号を制御盤で受け、予め設定した逆洗頻度、次亜塩素酸塩注入時間に切り替えることによって行うことができる。 These operations can be performed receiving a reduction signal for the residual chlorine concentration sensor 12 at the control panel, backwash frequency set in advance, by switching the hypochlorite injection time. また、上記動作により生物ファウリングの発生が抑制され、残留塩素濃度センサー12の値が正常な値に戻った時点で、再び逆洗頻度、次亜塩素酸塩注入時間を初期の設定値に戻す。 Further, the occurrence of biological fouling by the operation is suppressed, when the value of the residual chlorine concentration sensor 12 has returned to normal values, return backwash frequency, hypochlorite injection time to the initial set value again .

【0009】膜モジュールの逆洗時には、前記のように、次亜塩素酸塩注入ポンプ18を介して注入管16により逆洗水に次亜塩素酸塩が注入されるが、このとき、 [0009] During backwashing of a membrane module, as described above, the injection tube 16 through the hypochlorite infusion pump 18 is in the backwash water hypochlorite is injected, this time,
注入管16の一部分に次亜塩素酸のガス化や空気の混入によってガス滞留部ができ、これにより次亜塩素酸塩の注入不良が起こり、塩素が膜面に達しないことがある。 A portion of the injection tube 16 can gas residence portion by incorporation of the gasification and air hypochlorite, thereby occur implantation failure of hypochlorite, it may chlorine does not reach the film surface.
これを防止するため、注入管16に圧力センサー17を備え、これによって注入圧力を測定する。 To prevent this, a pressure sensor 17 to the injection tube 16, thereby measuring the injection pressure. この値が正常な圧力(2kg/cm 2以下)以上になった場合は、注入管16にガス滞留等により異常昇圧したものと判断し、制御盤に警告を表示する。 If this value is equal to or greater than the normal pressure (2 kg / cm 2 or less), it is determined that the abnormally boosted by infusion tube 16 to the gas residence, and displays a warning on the control panel. 仮に、残留塩素濃度センサー値が低下しても、この圧力センサー値が高ければ、 Even if it reduced residual chlorine concentration sensor value, the higher the pressure sensor value,
逆洗頻度、次亜塩素酸塩の注入時間の変更は行わない。 Backwash frequency, not change the injection time of hypochlorite.
逆洗頻度、次亜塩素酸塩注入時間の変更は、圧力センサー17の値が正常で、かつ残留塩素濃度センサー12の値が低下した場合にのみ行う。 Backwash frequency, the change of hypochlorite injection time is performed only when the normal value of the pressure sensor 17, and the value of the residual chlorine concentration sensor 12 is lowered.

【0010】逆洗排水の残留塩素濃度を測定する方法として、前記のドレン管9から排水をサンプリングし、残留塩素濃度センサー12で測定する代わりに、排水を一度排水ピット13に受け、ここからサンプリングポンプ14で残留塩素濃度センサー15に排水を送って測定することもできる。 As a method of measuring the residual chlorine concentration of backwash waste water, by sampling drained from the drain pipe 9, instead of measuring the residual chlorine concentration sensor 12, it received in the drainage pit 13 drainage once, sampled from here It can be measured by sending a wastewater residual chlorine concentration sensor 15 in the pump 14. また、排水の残留塩素濃度が低下した場合、逆洗頻度、塩素注入時間の設定を変更する代わりに、次亜塩素酸塩注入ポンプ1の出力を上げ、塩素添加濃度を上げることにより、生物ファウリング抑制効果を持たせることもできる。 Further, when the residual chlorine concentration of the waste water was reduced, backwash frequency, instead of changing the setting of the chlorine injection time, increase the output of hypochlorite infusion pump 1, by increasing the chlorination concentration, biological fouling it is also possible to provide a ring suppression effect.

【0011】 [0011]

【発明の効果】本発明の膜ろ過装置によれば、膜モジュールに生物ファウリングが発生したことを自動的に検知し、適切な時期に生物ファウリングを抑制する手段(逆洗頻度の増加や次亜塩素酸塩の注入時間の延長)を講じることができる。 According to the membrane filtration apparatus of the present invention, automatically detects the presence of an organism fouling occurs in the membrane module, Ya increased suppressing means (backwashing frequency biological fouling in a timely prolonged infusion time of hypochlorite) can take. また、本発明の膜ろ過装置によれば、 Further, according to the membrane filtration apparatus of the present invention,
生物ファウリングによる排水の残留塩素濃度の低下現象、次亜塩素酸塩の注入ポンプの運転不良による残留塩素濃度の低下現象あるいはその両方の現象の惹起を区別することができ、それぞれ適切な改善手段を講じることができ、長期間にわたって効率のよい膜ろ過を行うことができる。 Biological reduction phenomenon of the residual chlorine concentration of fouling by drainage, lowering phenomenon of the residual chlorine concentration operation by failure of the infusion pump of hypochlorite or can distinguish induction of both phenomena, each appropriate improvements means it can take, it is possible to perform efficient membrane filtration over a long period of time.

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

【図1】本発明の一実施例を示す膜ろ過装置の系統図である。 1 is a system diagram of a membrane filtration apparatus according to an embodiment of the present invention.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 原水槽 2 膜モジュール 3 逆洗水槽 4 次亜塩素酸塩槽 7 ろ過水流出管 9 ドレン管 11 サンプリング弁 12 残留塩素濃度センサー 13 排水ピット 14 サンプリングポンプ 15 残留塩素濃度センサー 16 注入管 17 圧力センサー 1 raw water tank 2 membrane module 3 backwash water tank 4 hypochlorite tank 7 the filtered water outlet pipe 9 drain pipe 11 sampling valve 12 the residual chlorine concentration sensor 13 drainage pit 14 sampling pump 15 residual chlorine concentration sensor 16 inlet tube 17 pressure sensor

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 膜モジュールを定期的に物理洗浄する際に排水可能なドレン管を備えた膜ろ過装置において、このドレン管から排水を採取し、排水中の残留塩素濃度を測定する残留塩素濃度センサーを備え、そのセンサー値に応じて膜モジュールの洗浄頻度及び/又は逆洗時における次亜塩素酸塩の注入時間が自動的に制御されることを特徴とする膜ろ過装置。 1. A membrane filtration apparatus having a drainable drain tube membrane module during regular physical cleaning, the residual chlorine concentration of collected waste water from the drain pipe, for measuring the residual chlorine concentration in the waste water with a sensor, membrane filtration apparatus, characterized in that the injection time of the hypochlorite is automatically controlled during the washing frequency and / or backwash of the membrane module in accordance with the sensor value.
  2. 【請求項2】 次亜塩素酸塩の注入管を備えた膜ろ過装置において、この注入管の途中に圧力センサーを備えたことを特徴とする膜ろ過装置。 2. A membrane filtration apparatus provided with an injection tube hypochlorite, membrane filtration apparatus characterized by comprising a pressure sensor in the middle of the injection tube.
  3. 【請求項3】 膜モジュールを定期的に物理洗浄する際に排水可能なドレン管と次亜塩素酸塩の注入管とを備えた膜ろ過装置において、このドレン管から排水を採取し、排水中の残留塩素濃度を測定する残留塩素濃度センサーを備え、さらに次亜塩素酸塩の注入管の途中に圧力センサーを備え、この圧力センサーが次亜塩素酸塩注入状態を良好と判定したときに、残留塩素濃度センサー値に応じて膜モジュールの洗浄頻度及び/又は逆洗時における次亜塩素酸塩の注入時間が自動的に制御されることを特徴とする膜ろ過装置。 3. A membrane filtration apparatus provided with an injection tube drainable drain pipe and hypochlorite in regularly physical washing the membrane module, and collecting effluent from the drain pipe, the waste water comprising a residual chlorine concentration sensor for measuring the concentration of residual chlorine, a pressure sensor further in the middle of the injection pipe of hypochlorite, when the pressure sensor is judged as good hypochlorite injection state, membrane filtration apparatus characterized by infusion time of hypochlorite is automatically controlled during the washing frequency and / or backwash of the membrane module according to the residual chlorine concentration sensor values.
JP2000042753A 2000-02-21 2000-02-21 Membrane filter Pending JP2001232160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000042753A JP2001232160A (en) 2000-02-21 2000-02-21 Membrane filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000042753A JP2001232160A (en) 2000-02-21 2000-02-21 Membrane filter

Publications (1)

Publication Number Publication Date
JP2001232160A true JP2001232160A (en) 2001-08-28

Family

ID=18565785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000042753A Pending JP2001232160A (en) 2000-02-21 2000-02-21 Membrane filter

Country Status (1)

Country Link
JP (1) JP2001232160A (en)

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007275870A (en) * 2006-03-16 2007-10-25 Ngk Insulators Ltd Separative membrane-cleaning method/device
JP2007289899A (en) * 2006-04-27 2007-11-08 Meidensha Corp Membrane washing method for membrane separation means, and water treatment apparatus
JP2008126223A (en) * 2006-11-27 2008-06-05 Meidensha Corp Membrane treatment system
JP2009538733A (en) * 2006-05-31 2009-11-12 エックス−フロー ベー.フェー. Apparatus for processing ingress fluid having a bioreactor and a membrane filtration module
JP2010058120A (en) * 2004-12-24 2010-03-18 Siemens Water Technologies Corp Cleaning in membrane filtration system
KR101050418B1 (en) 2009-04-23 2011-07-19 (주)대우건설 Keeping the intelligent efficient membrane cleaning apparatus and method
WO2011122175A1 (en) * 2010-03-30 2011-10-06 株式会社神鋼環境ソリューション Water treatment device and water treatment method
JP4825933B1 (en) * 2010-03-30 2011-11-30 株式会社神鋼環境ソリューション Water treatment method
CN102712507A (en) * 2010-03-30 2012-10-03 株式会社神钢环境舒立净 Water treatment device and water treatment method
US8318020B2 (en) 2006-03-16 2012-11-27 Metawater Co., Ltd. Washing method and apparatus of separation membrane
US8506806B2 (en) 2004-09-14 2013-08-13 Siemens Industry, Inc. Methods and apparatus for removing solids from a membrane module
US8512568B2 (en) 2001-08-09 2013-08-20 Siemens Industry, Inc. Method of cleaning membrane modules
US8518256B2 (en) 2001-04-04 2013-08-27 Siemens Industry, Inc. Membrane module
US8622222B2 (en) 2007-05-29 2014-01-07 Siemens Water Technologies Llc Membrane cleaning with pulsed airlift pump
US8623202B2 (en) 2007-04-02 2014-01-07 Siemens Water Technologies Llc Infiltration/inflow control for membrane bioreactor
US8758622B2 (en) 2004-12-24 2014-06-24 Evoqua Water Technologies Llc Simple gas scouring method and apparatus
US8758621B2 (en) 2004-03-26 2014-06-24 Evoqua Water Technologies Llc Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis
US8790515B2 (en) 2004-09-07 2014-07-29 Evoqua Water Technologies Llc Reduction of backwash liquid waste
US8808540B2 (en) 2003-11-14 2014-08-19 Evoqua Water Technologies Llc Module cleaning method
JP2014171926A (en) * 2013-03-06 2014-09-22 Swing Corp Desalination method and desalination apparatus
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
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
CN106731864A (en) * 2016-12-27 2017-05-31 贵阳时代沃顿科技有限公司 Device for detecting anti-fouling performance of concentrating net
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
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
US10322375B2 (en) 2015-07-14 2019-06-18 Evoqua Water Technologies Llc Aeration device for filtration system

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8518256B2 (en) 2001-04-04 2013-08-27 Siemens Industry, Inc. Membrane module
US8512568B2 (en) 2001-08-09 2013-08-20 Siemens Industry, Inc. Method of cleaning membrane modules
US8808540B2 (en) 2003-11-14 2014-08-19 Evoqua Water Technologies Llc Module cleaning method
US8758621B2 (en) 2004-03-26 2014-06-24 Evoqua Water Technologies Llc Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis
US8790515B2 (en) 2004-09-07 2014-07-29 Evoqua Water Technologies Llc Reduction of backwash liquid waste
US8506806B2 (en) 2004-09-14 2013-08-13 Siemens Industry, Inc. Methods and apparatus for removing solids from a membrane module
JP2010058120A (en) * 2004-12-24 2010-03-18 Siemens Water Technologies Corp Cleaning in membrane filtration system
US8758622B2 (en) 2004-12-24 2014-06-24 Evoqua Water Technologies Llc Simple gas scouring method and apparatus
US9675938B2 (en) 2005-04-29 2017-06-13 Evoqua Water Technologies Llc Chemical clean for membrane filter
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
US8318020B2 (en) 2006-03-16 2012-11-27 Metawater Co., Ltd. Washing method and apparatus of separation membrane
JP2007275870A (en) * 2006-03-16 2007-10-25 Ngk Insulators Ltd Separative membrane-cleaning method/device
JP2007289899A (en) * 2006-04-27 2007-11-08 Meidensha Corp Membrane washing method for membrane separation means, and water treatment apparatus
JP2009538733A (en) * 2006-05-31 2009-11-12 エックス−フロー ベー.フェー. Apparatus for processing ingress fluid having a bioreactor and a membrane filtration module
US10266439B2 (en) 2006-05-31 2019-04-23 X-Flow B.V. Method for cleaning membranes and an inlet side of a membrane filtration module of an apparatus having a bioreactor and membrane filtration module for treatment of an incoming fluid
JP2008126223A (en) * 2006-11-27 2008-06-05 Meidensha Corp Membrane treatment system
US8623202B2 (en) 2007-04-02 2014-01-07 Siemens Water Technologies Llc Infiltration/inflow control for membrane bioreactor
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
US8622222B2 (en) 2007-05-29 2014-01-07 Siemens 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
US9206057B2 (en) 2007-05-29 2015-12-08 Evoqua Water Technologies Llc Membrane cleaning with pulsed airlift pump
US8840783B2 (en) 2007-05-29 2014-09-23 Evoqua Water Technologies Llc Water treatment membrane cleaning with pulsed airlift pump
US9023206B2 (en) 2008-07-24 2015-05-05 Evoqua Water Technologies Llc Frame system for membrane filtration modules
KR101050418B1 (en) 2009-04-23 2011-07-19 (주)대우건설 Keeping the intelligent efficient membrane cleaning apparatus and method
US8956464B2 (en) 2009-06-11 2015-02-17 Evoqua Water Technologies Llc Method of cleaning membranes
WO2011122175A1 (en) * 2010-03-30 2011-10-06 株式会社神鋼環境ソリューション Water treatment device and water treatment method
JP4825933B1 (en) * 2010-03-30 2011-11-30 株式会社神鋼環境ソリューション Water treatment method
CN102712507A (en) * 2010-03-30 2012-10-03 株式会社神钢环境舒立净 Water treatment device and water treatment method
US9914097B2 (en) 2010-04-30 2018-03-13 Evoqua Water Technologies Llc Fluid flow distribution device
US9630147B2 (en) 2010-09-24 2017-04-25 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US9022224B2 (en) 2010-09-24 2015-05-05 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
US9764289B2 (en) 2012-09-26 2017-09-19 Evoqua Water Technologies Llc Membrane securement device
US9962865B2 (en) 2012-09-26 2018-05-08 Evoqua Water Technologies Llc Membrane potting methods
US9815027B2 (en) 2012-09-27 2017-11-14 Evoqua Water Technologies Llc Gas scouring apparatus for immersed membranes
JP2014171926A (en) * 2013-03-06 2014-09-22 Swing Corp Desalination method and desalination apparatus
US10322375B2 (en) 2015-07-14 2019-06-18 Evoqua Water Technologies Llc Aeration device for filtration system
CN106731864A (en) * 2016-12-27 2017-05-31 贵阳时代沃顿科技有限公司 Device for detecting anti-fouling performance of concentrating net

Similar Documents

Publication Publication Date Title
CA2174847C (en) Method and apparatus for recovering water from a sewer main
JP2860191B2 (en) How to change the operating mode in an automatic water filtration device
Bourgeous et al. Ultrafiltration of wastewater: effects of particles, mode of operation, and backwash effectiveness
Jacangelo et al. Low‐pressure membrane filtration for removing Giardia and microbial indicators
US20040007525A1 (en) Maintenance cleaning for membranes
EP1044928B1 (en) Water treating method
Laîné et al. Status after 10 years of operation—overview of UF technology today
US5647988A (en) Method of back-washing submerged-type ceramic membrane separation apparatus
JPH11509769A (en) A group of modules that perform operation and monitoring method and the method of a group of permeation membrane module
JP2001070967A (en) Cleaning system for laundry waste water
JP2004249168A (en) Operation method for water treatment device
JP3198923B2 (en) The method of cleaning membrane
WO2001066238A1 (en) Method of producing purified water
JP2005087887A (en) Membrane washing method
JP3194684B2 (en) Membrane purification method of natural water
JP2724673B2 (en) Surface water films purification method and apparatus therefor
JP4920990B2 (en) The method of cleaning the separation membrane
CZ290513B6 (en) Method for cleaning membrane filter with crossflow
JP4309633B2 (en) Water treatment method
CN101468822A (en) Water treatment system
Karimi et al. Microfiltration goes Hollywood: the Los Angeles experience
Ongerth Evaluation of treatment for removing Giardia cysts
CN100562500C (en) Drinking water deeply purifying method and device
JP3735883B2 (en) The method of cleaning the membrane separator and the membrane module
JP4135267B2 (en) Operating method and dead-end filtration membrane separator of dead-end filtration membrane separator