JP2015009174A - 水処理システムおよび水処理システムの水処理方法 - Google Patents

水処理システムおよび水処理システムの水処理方法 Download PDF

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Publication number
JP2015009174A
JP2015009174A JP2013134677A JP2013134677A JP2015009174A JP 2015009174 A JP2015009174 A JP 2015009174A JP 2013134677 A JP2013134677 A JP 2013134677A JP 2013134677 A JP2013134677 A JP 2013134677A JP 2015009174 A JP2015009174 A JP 2015009174A
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JP
Japan
Prior art keywords
membrane
water
unit
water treatment
fouling
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
JP2013134677A
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English (en)
Japanese (ja)
Inventor
敬子 中野
Keiko Nakano
敬子 中野
光太郎 北村
Kotaro Kitamura
光太郎 北村
みさき 隅倉
Misaki Sumikura
みさき 隅倉
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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2013134677A priority Critical patent/JP2015009174A/ja
Priority to US14/308,734 priority patent/US20150001151A1/en
Priority to IN3058CH2014 priority patent/IN2014CH03058A/en
Priority to ZA2014/04646A priority patent/ZA201404646B/en
Priority to AU2014203457A priority patent/AU2014203457A1/en
Priority to CN201410301217.6A priority patent/CN104250041A/zh
Publication of JP2015009174A publication Critical patent/JP2015009174A/ja
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • 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
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/06—Energy recovery
    • 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
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/12—Controlling or regulating
    • 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
    • B01D61/58—Multistep processes
    • 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
    • B01D63/10—Spiral-wound membrane modules
    • B01D63/107—Specific properties of the central tube or the permeate channel
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/14—Specific spacers
    • B01D2313/143—Specific spacers on the feed side
    • 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
    • B01D2321/40—Automatic control of cleaning processes
    • 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
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/001—Upstream control, i.e. monitoring for predictive control
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/10—Energy recovery
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/20—Prevention of biofouling
    • 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
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nanotechnology (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
JP2013134677A 2013-06-27 2013-06-27 水処理システムおよび水処理システムの水処理方法 Pending JP2015009174A (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2013134677A JP2015009174A (ja) 2013-06-27 2013-06-27 水処理システムおよび水処理システムの水処理方法
US14/308,734 US20150001151A1 (en) 2013-06-27 2014-06-19 Water treatment system, and water treating method in water treatment system
IN3058CH2014 IN2014CH03058A (cg-RX-API-DMAC10.html) 2013-06-27 2014-06-24
ZA2014/04646A ZA201404646B (en) 2013-06-27 2014-06-24 Water treatment system, and water treating method in water treatment system
AU2014203457A AU2014203457A1 (en) 2013-06-27 2014-06-25 Water treatment system, and water treating method in water treatment system
CN201410301217.6A CN104250041A (zh) 2013-06-27 2014-06-27 水处理系统以及水处理系统的水处理方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013134677A JP2015009174A (ja) 2013-06-27 2013-06-27 水処理システムおよび水処理システムの水処理方法

Publications (1)

Publication Number Publication Date
JP2015009174A true JP2015009174A (ja) 2015-01-19

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Application Number Title Priority Date Filing Date
JP2013134677A Pending JP2015009174A (ja) 2013-06-27 2013-06-27 水処理システムおよび水処理システムの水処理方法

Country Status (6)

Country Link
US (1) US20150001151A1 (cg-RX-API-DMAC10.html)
JP (1) JP2015009174A (cg-RX-API-DMAC10.html)
CN (1) CN104250041A (cg-RX-API-DMAC10.html)
AU (1) AU2014203457A1 (cg-RX-API-DMAC10.html)
IN (1) IN2014CH03058A (cg-RX-API-DMAC10.html)
ZA (1) ZA201404646B (cg-RX-API-DMAC10.html)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016221449A (ja) * 2015-05-29 2016-12-28 株式会社日立製作所 水処理システム
KR20180056887A (ko) * 2016-11-21 2018-05-30 코웨이 주식회사 정수기
KR101892261B1 (ko) * 2016-12-23 2018-08-27 울산과학기술원 광간섭 단층촬영이 가능한 역삼투 나권형 모듈, 이를 포함하는 해수담수화 장치 및 역삼투 나권형 모듈 모니터링 방법
KR101909931B1 (ko) * 2017-05-26 2018-10-19 울산과학기술원 영상데이터에 기반하는 수처리 시스템 및 동작 방법
WO2018198245A1 (ja) * 2017-04-26 2018-11-01 三菱重工エンジニアリング株式会社 逆浸透膜プラント及び逆浸透膜プラントの運転方法
KR101920811B1 (ko) * 2017-06-29 2018-11-21 울산과학기술원 영상데이터의 딥러닝 처리에 기반하는 수처리 시스템 및 동작 방법
JP2019505779A (ja) * 2015-12-23 2019-02-28 ケミラ オサケュスティオユルキネン 堆積物形成の監視および制御のための方法および装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200110331A (ko) 2018-01-25 2020-09-23 도레이 카부시키가이샤 막분리 시스템 및 막분리 시스템의 운전 방법
EP3784367B1 (en) * 2018-04-23 2023-08-16 Noria Water Technologies, Inc. Method and apparatus for real-time direct membrane surface monitoring
CN112334215B (zh) * 2018-06-18 2022-08-23 三菱电机株式会社 运转支援装置以及运转支援方法
JP2021184984A (ja) * 2019-08-30 2021-12-09 東レ株式会社 分離膜エレメント
CN113045027A (zh) * 2019-12-29 2021-06-29 广州易能克科技有限公司 高落差地势水处理装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008107330A (ja) * 2006-09-25 2008-05-08 Toray Ind Inc バイオファウリング発生リスク評価装置
US20090045144A1 (en) * 2006-01-24 2009-02-19 Yoram Cohen Method and System For Monitoring Reverse Osmosis Membranes
JP2009233511A (ja) * 2008-03-26 2009-10-15 Toray Ind Inc 膜ろ過システムの運転方法
JP2012106237A (ja) * 2010-10-21 2012-06-07 Nitto Denko Corp 膜分離装置、膜分離装置の運転方法および膜分離装置を用いた評価方法
JP2012130823A (ja) * 2010-12-18 2012-07-12 Mitsubishi Heavy Ind Ltd 淡水化装置、膜の監視方法および淡水化装置の運転方法
JP2012213773A (ja) * 2012-06-18 2012-11-08 Sumitomo Electric Ind Ltd 海水淡水化前処理用分離膜、海水淡水化前処理装置、海水淡水化装置および海水淡水化方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5154832A (en) * 1990-02-27 1992-10-13 Toray Industries, Inc. Spiral wound gas permeable membrane module and apparatus and method for using the same
JPH10286445A (ja) * 1997-04-17 1998-10-27 Kurita Water Ind Ltd 膜分離装置
CN101053773B (zh) * 2002-08-29 2011-02-16 奥加诺株式会社 分离膜组件的运转方法
JP5079372B2 (ja) * 2007-04-09 2012-11-21 日東電工株式会社 膜分離方法および膜分離装置
JP2011036752A (ja) * 2009-08-07 2011-02-24 Panasonic Electric Works Co Ltd 逆浸透膜モジュールおよびこれを組み込んだ浄水システム
US20120103892A1 (en) * 2010-10-28 2012-05-03 General Electric Company Separation module

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090045144A1 (en) * 2006-01-24 2009-02-19 Yoram Cohen Method and System For Monitoring Reverse Osmosis Membranes
JP2009524521A (ja) * 2006-01-24 2009-07-02 ザ リージェンツ オブ ザ ユニヴァーシティー オブ カリフォルニア 逆浸透膜を監視する方法およびシステム
JP2008107330A (ja) * 2006-09-25 2008-05-08 Toray Ind Inc バイオファウリング発生リスク評価装置
JP2009233511A (ja) * 2008-03-26 2009-10-15 Toray Ind Inc 膜ろ過システムの運転方法
JP2012106237A (ja) * 2010-10-21 2012-06-07 Nitto Denko Corp 膜分離装置、膜分離装置の運転方法および膜分離装置を用いた評価方法
JP2012130823A (ja) * 2010-12-18 2012-07-12 Mitsubishi Heavy Ind Ltd 淡水化装置、膜の監視方法および淡水化装置の運転方法
JP2012213773A (ja) * 2012-06-18 2012-11-08 Sumitomo Electric Ind Ltd 海水淡水化前処理用分離膜、海水淡水化前処理装置、海水淡水化装置および海水淡水化方法

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016221449A (ja) * 2015-05-29 2016-12-28 株式会社日立製作所 水処理システム
JP2019505779A (ja) * 2015-12-23 2019-02-28 ケミラ オサケュスティオユルキネン 堆積物形成の監視および制御のための方法および装置
US11046590B2 (en) 2015-12-23 2021-06-29 Kemira Oyj Method and an apparatus for monitoring and controlling deposit formation
KR20180056887A (ko) * 2016-11-21 2018-05-30 코웨이 주식회사 정수기
KR102720753B1 (ko) 2016-11-21 2024-10-24 코웨이 주식회사 정수기
KR101892261B1 (ko) * 2016-12-23 2018-08-27 울산과학기술원 광간섭 단층촬영이 가능한 역삼투 나권형 모듈, 이를 포함하는 해수담수화 장치 및 역삼투 나권형 모듈 모니터링 방법
WO2018198245A1 (ja) * 2017-04-26 2018-11-01 三菱重工エンジニアリング株式会社 逆浸透膜プラント及び逆浸透膜プラントの運転方法
WO2018199093A1 (ja) * 2017-04-26 2018-11-01 三菱重工エンジニアリング株式会社 逆浸透膜プラント及び逆浸透膜プラントの運転方法
JPWO2018199093A1 (ja) * 2017-04-26 2019-11-14 三菱重工エンジニアリング株式会社 逆浸透膜プラント及び逆浸透膜プラントの運転方法
KR101909931B1 (ko) * 2017-05-26 2018-10-19 울산과학기술원 영상데이터에 기반하는 수처리 시스템 및 동작 방법
KR101920811B1 (ko) * 2017-06-29 2018-11-21 울산과학기술원 영상데이터의 딥러닝 처리에 기반하는 수처리 시스템 및 동작 방법

Also Published As

Publication number Publication date
AU2014203457A1 (en) 2015-01-22
US20150001151A1 (en) 2015-01-01
CN104250041A (zh) 2014-12-31
ZA201404646B (en) 2015-09-30
IN2014CH03058A (cg-RX-API-DMAC10.html) 2015-09-18

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