JP2006272135A5 - - Google Patents

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JP2006272135A5
JP2006272135A5 JP2005094334A JP2005094334A JP2006272135A5 JP 2006272135 A5 JP2006272135 A5 JP 2006272135A5 JP 2005094334 A JP2005094334 A JP 2005094334A JP 2005094334 A JP2005094334 A JP 2005094334A JP 2006272135 A5 JP2006272135 A5 JP 2006272135A5
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reverse osmosis
membrane module
membrane
module
water
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JP2005094334A
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JP4923427B2 (en
JP2006272135A (en
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原水を精密ろ過膜モジュールまたは限外ろ過膜モジュールで処理して得られた処理水を、第１の逆浸透膜モジュールで逆浸透処理し、さらに前記第１の逆浸透膜モジュールで逆浸透処理された透過水を第２の逆浸透膜モジュールで逆浸透処理する膜分離方法において、前記第２の逆浸透膜モジュールで得られた濃縮水の少なくとも一部を、前記精密ろ過膜モジュールに用いられる精密ろ過膜または前記限外ろ過膜モジュールに用いられる限外ろ過膜の洗浄水とする洗浄工程を有することを特徴とする膜分離方法。 The treated water obtained by treating raw water with a microfiltration membrane module or an ultrafiltration membrane module is subjected to reverse osmosis treatment with the first reverse osmosis membrane module and further subjected to reverse osmosis treatment with the first reverse osmosis membrane module. In the membrane separation method in which the permeated water is subjected to reverse osmosis treatment with the second reverse osmosis membrane module, at least part of the concentrated water obtained by the second reverse osmosis membrane module is used in the precision filtration membrane module. membrane separation wherein the Rukoto to have a cleaning step of the cleaning water ultrafiltration membrane used in the filtration membrane or the ultrafiltration membrane module. 前記第２の逆浸透膜モジュールで得られた濃縮水の少なくとも一部を、前記精密ろ過膜または前記限外ろ過膜の洗浄水として用いるに際し、洗浄水に酸化剤を添加することを特徴とする請求項１に記載の膜分離方法。 When using at least a part of the concentrated water obtained by the second reverse osmosis membrane module as washing water for the microfiltration membrane or the ultrafiltration membrane, an oxidizing agent is added to the washing water. membrane separation method according to 請 Motomeko 1. 原水を処理する精密ろ過膜モジュールまたは限外ろ過膜モジュールを備え、前記精密ろ過膜モジュールまたは前記限外ろ過膜モジュールで得られた処理水を逆浸透処理する第１の逆浸透膜モジュールを有し、さらに前記第１の逆浸透膜モジュールで得られた透過水を逆浸透膜処理する第２の逆浸透膜モジュールを有する膜分離装置において、前記第２の逆浸透膜モジュールで得られた濃縮水の少なくとも一部を、前記精密ろ過膜モジュールに用いられる精密ろ過膜または前記限外ろ過膜モジュールに用いられる限外ろ過膜の洗浄水として返送する手段を有することを特徴とする膜分離装置。 A first reverse osmosis membrane module that includes a microfiltration membrane module or an ultrafiltration membrane module for treating raw water, and that performs reverse osmosis treatment of treated water obtained by the microfiltration membrane module or the ultrafiltration membrane module; Further, in the membrane separation apparatus having a second reverse osmosis membrane module for treating the permeate obtained by the first reverse osmosis membrane module with a reverse osmosis membrane, the concentrated water obtained by the second reverse osmosis membrane module At least a portion of said microfiltration membrane membrane separation apparatus according to claim Rukoto to have a means for returning the cleaning water ultrafiltration membrane used in the microfiltration membrane or the ultrafiltration membrane module used in the module . さらに酸化剤貯留用の酸化剤タンクを備え、かつ、前記濃縮水の少なくとも一部を洗浄水として返送する手段の途中に、前記酸化剤タンクからの酸化剤添加口が設けられていることを特徴とする請求項３に記載の膜分離装置。 Further, an oxidant tank for storing oxidant is provided, and an oxidant addition port from the oxidant tank is provided in the middle of the means for returning at least a part of the concentrated water as washing water. membrane separation apparatus according to 請 Motomeko 3,.
JP2005094334A 2005-03-29 2005-03-29 Membrane separation method and membrane separation apparatus Active JP4923427B2 (en)

Priority Applications (1)

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JP2005094334A JP4923427B2 (en) 2005-03-29 2005-03-29 Membrane separation method and membrane separation apparatus

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Application Number Priority Date Filing Date Title
JP2005094334A JP4923427B2 (en) 2005-03-29 2005-03-29 Membrane separation method and membrane separation apparatus

Publications (3)

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JP2006272135A JP2006272135A (en) 2006-10-12
JP2006272135A5 true JP2006272135A5 (en) 2008-04-24
JP4923427B2 JP4923427B2 (en) 2012-04-25

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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009148667A (en) * 2007-12-19 2009-07-09 Metawater Co Ltd Membrane filtration apparatus and membrane washing method
JP2009241040A (en) * 2008-03-31 2009-10-22 Mitsui Eng & Shipbuild Co Ltd Method and apparatus for regenerating membrane for manufacturing ballast water
US20140308712A1 (en) * 2010-12-09 2014-10-16 Toray Industries, Inc. Method for producing concentrated aqueous sugar solution
JP5633540B2 (en) * 2012-06-18 2014-12-03 住友電気工業株式会社 Separation membrane for seawater desalination pretreatment, seawater desalination pretreatment device, seawater desalination device, and seawater desalination method
JP2014161795A (en) * 2013-02-25 2014-09-08 Mitsubishi Heavy Ind Ltd Water treatment system
CN106310948A (en) * 2015-06-30 2017-01-11 天津工业大学 Reduced-pressure ultrafiltration membrane distillation device and reduced-pressure ultrafiltration membrane distillation method
JP6406394B1 (en) * 2017-05-29 2018-10-17 栗田工業株式会社 Nonionic surfactant-containing water treatment method and water treatment method
JP2019076827A (en) * 2017-10-24 2019-05-23 住友電気工業株式会社 Water treatment equipment and water treatment method
CN110482742A (en) * 2019-08-29 2019-11-22 深圳中拓天达环境工程有限公司 Electrode foil boracic cleans waste water treatment system and its treatment process
CN110981061A (en) * 2019-12-16 2020-04-10 江苏久吾高科技股份有限公司 Method and device for treating metal processing wastewater

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Publication number Priority date Publication date Assignee Title
JP3838689B2 (en) * 1996-03-26 2006-10-25 野村マイクロ・サイエンス株式会社 Water treatment system
JPH10235166A (en) * 1997-02-25 1998-09-08 Nitto Denko Corp Treatment apparatus using spiral-shaped membrane element
JP2005254192A (en) * 2004-03-15 2005-09-22 Nitto Denko Corp Membrane separator and membrane separation method

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