JPS5667504A - Repairing method of membrane for separation - Google Patents

Repairing method of membrane for separation

Info

Publication number
JPS5667504A
JPS5667504A JP14477079A JP14477079A JPS5667504A JP S5667504 A JPS5667504 A JP S5667504A JP 14477079 A JP14477079 A JP 14477079A JP 14477079 A JP14477079 A JP 14477079A JP S5667504 A JPS5667504 A JP S5667504A
Authority
JP
Japan
Prior art keywords
membrane
filter
compatibility
cellulose acetate
repair
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.)
Granted
Application number
JP14477079A
Other languages
Japanese (ja)
Other versions
JPS618723B2 (en
Inventor
Yoshiaki Nakanishi
Seigo Kazumi
Kunihiko Sasajima
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.)
Daicel Corp
Original Assignee
Daicel Corp
Daicel Chemical Industries Ltd
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 Daicel Corp, Daicel Chemical Industries Ltd filed Critical Daicel Corp
Priority to JP14477079A priority Critical patent/JPS5667504A/en
Publication of JPS5667504A publication Critical patent/JPS5667504A/en
Publication of JPS618723B2 publication Critical patent/JPS618723B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PURPOSE: To easily repair the damaged parts of the filter membrane set to a module simply by coating a liquid material of specific temp. having compatibility and plasticizing action upon cellulose acetate etc. used as a separating membrane on the defect part.
CONSTITUTION: A liquid meterial of ≥70°C having compatibility and plasticizing action to a cellulose acetate- or acrylonitrile copolymer used as a separating membrane is coated on the defect part and its peripheral part by means of a writing brush, brush, or the like, and is made smooth in appearance, after which the membrane is left standing. This makes the loss of the filter effective area slight and enables the filter characteristic to be recovered nearly to a normal value. Particularly this is effective for repair and restoration of small defects that are found after the membrane have been set in the module.
COPYRIGHT: (C)1981,JPO&Japio
JP14477079A 1979-11-08 1979-11-08 Repairing method of membrane for separation Granted JPS5667504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14477079A JPS5667504A (en) 1979-11-08 1979-11-08 Repairing method of membrane for separation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14477079A JPS5667504A (en) 1979-11-08 1979-11-08 Repairing method of membrane for separation

Publications (2)

Publication Number Publication Date
JPS5667504A true JPS5667504A (en) 1981-06-06
JPS618723B2 JPS618723B2 (en) 1986-03-17

Family

ID=15370006

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14477079A Granted JPS5667504A (en) 1979-11-08 1979-11-08 Repairing method of membrane for separation

Country Status (1)

Country Link
JP (1) JPS5667504A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2243543A1 (en) 2004-10-18 2010-10-27 Kurita Water Industries Ltd. Agent for increasing rejection with a permeable membrane, process for increasing the rejection, permeable membrane and process for water treatment
JP2021512784A (en) * 2018-05-10 2021-05-20 エルジー・ケム・リミテッド Reverse osmosis membrane, its manufacturing method and water treatment module

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2243543A1 (en) 2004-10-18 2010-10-27 Kurita Water Industries Ltd. Agent for increasing rejection with a permeable membrane, process for increasing the rejection, permeable membrane and process for water treatment
US8025159B2 (en) 2004-10-18 2011-09-27 Kurita Water Industries Ltd. Agent for increasing rejection with a permeable membrane, process for increasing the rejection, permeable membrane and process for water treatment
JP2021512784A (en) * 2018-05-10 2021-05-20 エルジー・ケム・リミテッド Reverse osmosis membrane, its manufacturing method and water treatment module

Also Published As

Publication number Publication date
JPS618723B2 (en) 1986-03-17

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