FR2525488B1 - Procede et appareil de filtration d'une suspension - Google Patents

Procede et appareil de filtration d'une suspension

Info

Publication number
FR2525488B1
FR2525488B1 FR838306692A FR8306692A FR2525488B1 FR 2525488 B1 FR2525488 B1 FR 2525488B1 FR 838306692 A FR838306692 A FR 838306692A FR 8306692 A FR8306692 A FR 8306692A FR 2525488 B1 FR2525488 B1 FR 2525488B1
Authority
FR
France
Prior art keywords
filtering
suspension
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.)
Expired - Fee Related
Application number
FR838306692A
Other languages
English (en)
Other versions
FR2525488A1 (fr
Inventor
Setsuo Shibata
Yukihiko Koshiba
Yoshito Hamamoto
Katsutoshi Kugai
Akiro Kawashima
Hiroshi Fujisawa
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.)
JGC Corp
Original Assignee
JGC Corp
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
Priority claimed from JP6714182A external-priority patent/JPS6043162B2/ja
Priority claimed from JP6714282A external-priority patent/JPS6043163B2/ja
Application filed by JGC Corp filed Critical JGC Corp
Publication of FR2525488A1 publication Critical patent/FR2525488A1/fr
Application granted granted Critical
Publication of FR2525488B1 publication Critical patent/FR2525488B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/024—Hollow fibre modules with a single potted end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
    • B01D63/043—Hollow fibre modules comprising multiple hollow fibre assemblies with separate tube sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/04—Backflushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/18—Use of gases

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
FR838306692A 1982-04-23 1983-04-22 Procede et appareil de filtration d'une suspension Expired - Fee Related FR2525488B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6714182A JPS6043162B2 (ja) 1982-04-23 1982-04-23 懸濁物を含む液体の濾過方法および濾過装置
JP6714282A JPS6043163B2 (ja) 1982-04-23 1982-04-23 中空糸濾過膜集束体の保護外筒

Publications (2)

Publication Number Publication Date
FR2525488A1 FR2525488A1 (fr) 1983-10-28
FR2525488B1 true FR2525488B1 (fr) 1990-01-05

Family

ID=26408318

Family Applications (1)

Application Number Title Priority Date Filing Date
FR838306692A Expired - Fee Related FR2525488B1 (fr) 1982-04-23 1983-04-22 Procede et appareil de filtration d'une suspension

Country Status (3)

Country Link
US (1) US4540490A (fr)
FR (1) FR2525488B1 (fr)
GB (1) GB2120952B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110015718A (zh) * 2019-05-13 2019-07-16 岭东核电有限公司 用于处理放射性废水的净化装置

Families Citing this family (104)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756875A (en) * 1983-09-29 1988-07-12 Kabushiki Kaisha Toshiba Apparatus for filtering water containing radioactive substances in nuclear power plants
WO1985001449A1 (fr) * 1983-09-30 1985-04-11 Memtec Limited Nettoyage des filtres
US4605500A (en) * 1984-04-24 1986-08-12 Mitsubishi Rayon Co., Ltd. Hollow-fiber filter module
ATE81796T1 (de) * 1985-03-05 1992-11-15 Memtec Ltd Konzentrierung von feststoffen in einer suspension.
US4840769A (en) * 1985-04-18 1989-06-20 Asahi Kasei Kogyo Kabushiki Kaisha Process for sterilizing a filtration device
JPS61274709A (ja) * 1985-05-29 1986-12-04 Ebara Corp 中空糸膜ろ過装置
US4876006A (en) * 1985-10-08 1989-10-24 Ebara Corporation Hollow fiber filter device
US4846976A (en) * 1985-12-06 1989-07-11 Memtec Limited Treatment of emulsions
FR2659870B1 (fr) * 1990-03-23 1993-03-12 Degremont Perfectionnements apportes aux filtres a membranes, pour ultra ou micro-filtration de liquides, notamment d'eau.
US5639373A (en) 1995-08-11 1997-06-17 Zenon Environmental Inc. Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate
JP2904564B2 (ja) * 1990-08-31 1999-06-14 オルガノ株式会社 中空糸膜を用いる濾過塔のスクラビング方法
JP2858913B2 (ja) * 1990-09-26 1999-02-17 オルガノ株式会社 中空糸膜を用いる濾過方法
US5221484A (en) * 1991-01-10 1993-06-22 Ceramem Separations Limited Partnership Catalytic filtration device and method
US5510195A (en) * 1991-03-01 1996-04-23 Nikko Kogyo Kabushiki Kaisha Resin membrane having metallic layer and method of producing the same
SE506930C2 (sv) * 1991-03-25 1998-03-02 Svedala Pumps & Process Ab Förfarande och anordning för förtjockning av finpartikulära suspensioner
EP0641246B1 (fr) * 1991-08-07 2000-03-08 USF Filtration Limited Concentration de matieres solides dans une suspension a l'aide de membranes a fibres creuses
AU695784B2 (en) * 1991-08-07 1998-08-20 Siemens Industry, Inc. Concentration of solids in a suspension using hollow fibre membranes
AU735103B2 (en) * 1991-08-07 2001-06-28 Siemens Industry, Inc. Concentration of solids in a suspension using hollow fibre membranes
US5468397A (en) * 1993-03-16 1995-11-21 Memtec America Corporation Gas backwash of pleated filters
DE4309734A1 (de) * 1993-03-25 1994-09-29 Akzo Nobel Nv Verfahren zum Reinigen von Hohlfasern
US5424042A (en) * 1993-09-13 1995-06-13 Mason; J. Bradley Apparatus and method for processing wastes
FR2713220B1 (fr) * 1993-11-30 1996-03-08 Omnium Traitement Valorisa Installation de potabilisation de l'eau à membranes filtrantes immergées.
AU7354494A (en) * 1994-05-25 1995-12-18 Memtec America Corporation Gas backwash of pleated filters
US20040238432A1 (en) * 1995-08-11 2004-12-02 Mailvaganam Mahendran Membrane filtration module with adjustable header spacing
US8852438B2 (en) * 1995-08-11 2014-10-07 Zenon Technology Partnership Membrane filtration module with adjustable header spacing
US7087173B2 (en) * 1995-08-11 2006-08-08 Zenon Environmental Inc. Inverted cavity aerator for membrane module
US6685832B2 (en) * 1995-08-11 2004-02-03 Zenon Environmental Inc. Method of potting hollow fiber membranes
DE69636357T2 (de) * 1995-08-11 2007-08-09 Zenon Environmental Inc., Oakville Membranmodul mit frei schwingenden Hohlfasermembranen
WO1998028066A1 (fr) * 1996-12-20 1998-07-02 Usf Filtration And Separations Group, Inc. Procede de decapage
US6641733B2 (en) * 1998-09-25 2003-11-04 U. S. Filter Wastewater Group, Inc. Apparatus and method for cleaning membrane filtration modules
US6906172B2 (en) * 1998-03-10 2005-06-14 Large Scale Biology Corporation Flexible processing apparatus for isolating and purifying viruses, soluble proteins and peptides from plant sources
TWI222895B (en) 1998-09-25 2004-11-01 Usf Filtration & Separations Apparatus and method for cleaning membrane filtration modules
EP1140330B1 (fr) 1998-11-23 2005-04-06 Zenon Environmental Inc. Filtrage de l'eau au moyen de membranes immergees
US6156200A (en) * 1998-12-08 2000-12-05 Usf Filtration & Separations Group, Inc. Gas-scrubbed hollow fiber membrane module
AUPP985099A0 (en) 1999-04-20 1999-05-13 Usf Filtration And Separations Group Inc. Membrane filtration manifold system
AUPQ680100A0 (en) 2000-04-10 2000-05-11 Usf Filtration And Separations Group Inc. Hollow fibre restraining system
AUPR064800A0 (en) * 2000-10-09 2000-11-02 Usf Filtration And Separations Group Inc. Improved membrane filtration system
AUPR094600A0 (en) * 2000-10-23 2000-11-16 Usf Filtration And Separations Group Inc. Fibre membrane arrangement
AUPR143400A0 (en) 2000-11-13 2000-12-07 Usf Filtration And Separations Group Inc. Modified membranes
FR2817485B1 (fr) * 2000-12-06 2003-01-03 Commissariat Energie Atomique Decolmatage d'un filtre a fibres creuses fonctionnant en mode frontal
AUPR421501A0 (en) 2001-04-04 2001-05-03 U.S. Filter Wastewater Group, Inc. Potting method
AUPR584301A0 (en) 2001-06-20 2001-07-12 U.S. Filter Wastewater Group, Inc. Membrane polymer compositions
AUPR692401A0 (en) 2001-08-09 2001-08-30 U.S. Filter Wastewater Group, Inc. Method of cleaning membrane modules
AUPR774201A0 (en) 2001-09-18 2001-10-11 U.S. Filter Wastewater Group, Inc. High solids module
DE60213184T2 (de) * 2001-11-16 2007-06-28 U.S. Filter Wastewater Group, Inc. Methode zur Reinigung von Membranen
US7247238B2 (en) 2002-02-12 2007-07-24 Siemens Water Technologies Corp. Poly(ethylene chlorotrifluoroethylene) membranes
AUPS300602A0 (en) 2002-06-18 2002-07-11 U.S. Filter Wastewater Group, Inc. Methods of minimising the effect of integrity loss in hollow fibre membrane modules
JP4282598B2 (ja) 2002-10-10 2009-06-24 シーメンス・ウォーター・テクノロジーズ・コーポレーション 濾過装置及び該濾過装置を洗浄する方法
AU2002953111A0 (en) 2002-12-05 2002-12-19 U. S. Filter Wastewater Group, Inc. Mixing chamber
AU2003903507A0 (en) 2003-07-08 2003-07-24 U. S. Filter Wastewater Group, Inc. Membrane post-treatment
JP4611982B2 (ja) 2003-08-29 2011-01-12 シーメンス・ウォーター・テクノロジーズ・コーポレーション 逆洗方法
EP1680211B1 (fr) * 2003-09-22 2014-07-09 Evoqua Water Technologies LLC Procede de nettoyage et de lavage a contre-courant
US20050115899A1 (en) * 2003-10-21 2005-06-02 Minggang Liu Membrane bioreactor having single header membrane module
NZ546959A (en) 2003-11-14 2008-03-28 Siemens Water Tech Corp Improved cleaning method for a porous membrane filtration module
WO2005092799A1 (fr) 2004-03-26 2005-10-06 U.S. Filter Wastewater Group, Inc. Processus et appareil de purification d'eau impure au moyen d'une microfiltration ou d'une ultrafiltration associee a une osmose inversee
EP2380854A3 (fr) 2004-04-22 2012-07-04 Siemens Industry, Inc. Appareil de filtration comprenant un bioréacteur à membrane et une cuve de traitement pour digérer les matières organiques
US7122121B1 (en) * 2004-05-28 2006-10-17 Jiang Ji Advanced submerged membrane modules, systems and processes
FR2872437B1 (fr) * 2004-06-30 2007-02-16 Commissariat Energie Atomique Decolmatage d'un filtre a fibres creuses utilisable notamment pour des effluents moussants
EP1773476A4 (fr) 2004-07-02 2007-07-25 Siemens Water Tech Corp Membrane de transfert de gaz
JP2008505197A (ja) 2004-07-05 2008-02-21 シーメンス・ウォーター・テクノロジーズ・コーポレーション 親水性膜
JP4958779B2 (ja) 2004-08-20 2012-06-20 シーメンス・ウォーター・テクノロジーズ・コーポレイション 正方形のｍｂｒマニホールド・システム
JP4838248B2 (ja) 2004-09-07 2011-12-14 シーメンス・ウォーター・テクノロジーズ・コーポレーション 逆洗液体廃棄物の低減
NZ553742A (en) 2004-09-14 2010-09-30 Siemens Water Tech Corp Methods and apparatus for removing solids from a membrane module
CN100548452C (zh) 2004-09-15 2009-10-14 西门子水技术公司 一种薄膜过滤系统以及控制薄膜过滤系统中积垢的方法
US7591950B2 (en) 2004-11-02 2009-09-22 Siemens Water Technologies Corp. Submerged cross-flow filtration
ES2365928T3 (es) 2004-12-03 2011-10-13 Siemens Industry, Inc. Post-tratamiento de membranas.
SG2014010789A (en) 2004-12-24 2014-06-27 Siemens Industry Inc Cleaning in membrane filtration systems
EP1838422A4 (fr) 2004-12-24 2009-09-02 Siemens Water Tech Corp Procede et appareil simples de lavage au gaz
CN100518907C (zh) * 2005-03-09 2009-07-29 浙江欧美环境工程有限公司 一种漂悬式中空纤维多孔膜过滤组件
US9675938B2 (en) * 2005-04-29 2017-06-13 Evoqua Water Technologies Llc Chemical clean for membrane filter
US8357299B2 (en) * 2005-07-12 2013-01-22 Zenon Technology Partnership Process control for an immersed membrane system
CA2614498A1 (fr) 2005-07-14 2007-01-18 Siemens Water Technologies Corp. Traitement de membranes avec un monopersulfate
ATE511911T1 (de) 2005-08-22 2011-06-15 Siemens Industry Inc Anordnung zur wasserfiltration zur minimierung des rückspülvolumen
US7563363B2 (en) 2005-10-05 2009-07-21 Siemens Water Technologies Corp. System for treating wastewater
WO2007044415A2 (fr) 2005-10-05 2007-04-19 Siemens Water Technologies Corp. Procédé et appareil destinés à traiter les eaux usées
US7455765B2 (en) 2006-01-25 2008-11-25 Siemens Water Technologies Corp. Wastewater treatment system and method
NZ574487A (en) * 2006-07-14 2011-11-25 Siemens Water Tech Corp Increasing the water permeability of porous polymeric membranes using monopersulfate and halide ions
WO2008051546A2 (fr) 2006-10-24 2008-05-02 Siemens Water Technologies Corp. Régulation d'infiltration/débit entrant pour bioréacteur à membrane
US20080099399A1 (en) * 2006-10-27 2008-05-01 Its Engineered Systems, Inc. Filtration system
US20100012585A1 (en) * 2007-02-16 2010-01-21 Fufang Zha Membrane filtration process and design
WO2008123972A1 (fr) 2007-04-02 2008-10-16 Siemens Water Technologies Corp. Commande d'infiltration/afflux améliorée pour bioréacteur à membranes
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
CA2688455C (fr) 2007-05-29 2019-12-03 Siemens Water Technologies Corp. Ecoulement pulse aleatoire de gaz/liquide a deux phases destine au nettoyage de surfaces de membrane
US8110112B2 (en) 2007-05-30 2012-02-07 Innova Prep LLC Liquid to liquid biological particle concentrator
CA2689406A1 (fr) * 2007-06-28 2008-12-31 Siemens Water Technologies Corp. Procede de nettoyage pour des systemes de filtration simples
JP2013500144A (ja) 2008-07-24 2013-01-07 シーメンス インダストリー インコーポレイテッド 濾過システムにおける濾過膜モジュールアレイに対して構造的支持を施すための方法および濾過システム
CA2734796A1 (fr) 2008-08-20 2010-02-25 Siemens Water Technologies Corp. Rendement energetique ameliore du lavage a contre-courant d'un systeme a membrane
WO2010142673A1 (fr) 2009-06-11 2010-12-16 Siemens Water Technologies Corp. Procédés de nettoyage d'une membrane polymère poreuse et kit pour le nettoyage d'une membrane polymère poreuse
WO2011079062A1 (fr) * 2009-12-21 2011-06-30 Siemens Industry, Inc. Membranes polymères poreuses chargées et leur préparation
HUE045642T2 (hu) 2010-04-30 2020-01-28 Evoqua Water Tech Llc Folyadékáramlás elosztó készülék
AU2011305377B2 (en) 2010-09-24 2014-11-20 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
US20140339163A1 (en) * 2011-09-16 2014-11-20 General Electric Company Performance of a membrane used in membrane distillation
KR101964484B1 (ko) 2011-09-30 2019-04-01 에보쿠아 워터 테크놀로지스 엘엘씨 개선된 매니폴드 배열
US9925499B2 (en) 2011-09-30 2018-03-27 Evoqua Water Technologies Llc Isolation valve with seal for end cap of a filtration system
US9533261B2 (en) 2012-06-28 2017-01-03 Evoqua Water Technologies Llc Potting method
WO2014043315A1 (fr) 2012-09-14 2014-03-20 Evoqua Water Technologies Llc Mélange polymère pour membranes
AU2013231145B2 (en) 2012-09-26 2017-08-17 Evoqua Water Technologies Llc Membrane potting methods
WO2014052071A1 (fr) 2012-09-26 2014-04-03 Evoqua Water Technologies Llc Dispositif de sécurisation de membrane
US9815027B2 (en) 2012-09-27 2017-11-14 Evoqua Water Technologies Llc Gas scouring apparatus for immersed membranes
CN104968408B (zh) 2013-02-05 2019-09-17 普凯尔德诊断技术有限公司 过滤装置以及使用该过滤装置的方法
US10427102B2 (en) 2013-10-02 2019-10-01 Evoqua Water Technologies Llc Method and device for repairing a membrane filtration module
US10322375B2 (en) 2015-07-14 2019-06-18 Evoqua Water Technologies Llc Aeration device for filtration system
JP6700857B2 (ja) * 2016-02-29 2020-05-27 三菱日立パワーシステムズ環境ソリューション株式会社 中空糸膜モジュール及びこれを備えた水処理装置
EP4334258A1 (fr) * 2021-05-06 2024-03-13 Prosper Technologies, LLC Systèmes et méthodes d'infusion de gaz pour le traitement des eaux usées

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570132A (en) * 1949-09-13 1951-10-02 Infilco Inc Filter
CH481669A (de) * 1967-07-12 1969-11-30 Filtrox Maschb Ag Verfahren zur Reinigung einer Filtriereinrichtung mit eingebautem Filter und Vorrichtung zur Durchführung des Verfahrens
JPS5325344B2 (fr) * 1974-03-28 1978-07-26
JPS5197583A (fr) * 1975-01-20 1976-08-27
JPS53108882A (en) * 1977-03-04 1978-09-22 Kuraray Co Ltd Back washing method for hollow filament membrane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110015718A (zh) * 2019-05-13 2019-07-16 岭东核电有限公司 用于处理放射性废水的净化装置

Also Published As

Publication number Publication date
GB2120952B (en) 1985-07-31
GB8310425D0 (en) 1983-05-25
US4540490A (en) 1985-09-10
GB2120952A (en) 1983-12-14
FR2525488A1 (fr) 1983-10-28

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