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1. WO2016135901 - CLEANING METHOD FOR WATER TREATMENT MEMBRANE

Publication Number WO/2016/135901
Publication Date 01.09.2016
International Application No. PCT/JP2015/055470
International Filing Date 25.02.2015
IPC
B01D 65/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
65Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
02Membrane cleaning or sterilisation
06with special washing compositions
CPC
B01D 2311/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2311Details relating to membrane separation process operations and control
12Addition of chemical agents
B01D 2321/162
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2321Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
16Use of chemical agents
162Use of acids
B01D 2321/168
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2321Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
16Use of chemical agents
168Use of other chemical agents
B01D 61/08
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02Reverse osmosis; Hyperfiltration ; ; Nanofiltration
08Apparatus therefor
B01D 61/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02Reverse osmosis; Hyperfiltration ; ; Nanofiltration
12Controlling or regulating
B01D 65/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
65Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
02Membrane cleaning or sterilisation ; ; Membrane regeneration
Applicants
  • 三菱重工業株式会社 MITSUBISHI HEAVY INDUSTRIES, LTD. [JP]/[JP]
Inventors
  • 田浦 慎太郎 TAURA Shintaro
  • 田畑 雅之 TABATA Masayuki
  • 伊藤 嘉晃 ITO Yoshiaki
  • 横濱 克彦 YOKOHAMA Katsuhiko
  • 佐尾 俊生 SAO Toshio
Agents
  • 森 隆一郎 MORI Ryuichirou
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) CLEANING METHOD FOR WATER TREATMENT MEMBRANE
(FR) PROCÉDÉ DE NETTOYAGE D'UNE MEMBRANE DE TRAITEMENT DE L'EAU
(JA) 水処理膜の洗浄方法
Abstract
(EN)
A cleaning method for a water treatment membrane 2 provided with a primary surface 2a for inflow of untreated water and a secondary surface 2b for outflow of treated water, said method carrying out a first cleaning step for making a first cleaning fluid containing a metal eluent come into contact with at least the primary surface and eliminating metallic scale 11 attached to the water treatment membrane, and then a second cleaning step for making a second cleaning fluid containing an oxidizing agent come into contact with at least the primary surface and eliminating organic scale 12 attached to the water treatment membrane.
(FR)
La présente invention concerne un procédé de nettoyage d'une membrane de traitement de l'eau (2) pourvue d'une surface primaire (2a) pour l'entrée d'eau non traitée et d'une surface secondaire (2b) pour l'écoulement d'eau traitée, ledit procédé réalisant une première étape de nettoyage pour la fabrication d'un premier fluide de nettoyage contenant un éluant de métal qui vient en contact avec au moins la surface primaire et l'élimination des dépôts métalliques (11) fixés à la membrane de traitement d'eau, et ensuite une seconde étape de nettoyage pour la fabrication d'un second fluide de nettoyage contenant un agent oxydant qui vient en contact avec au moins la surface primaire et l'élimination des dépôts organiques (12) fixés à la membrane de traitement de l'eau.
(JA)
未処理水が流入する一次面2a及び処理水が流出する二次面2bを備えた水処理膜2の洗浄方法であって、金属溶出剤を含む第一洗浄液を少なくとも前記一次面に接触させ、前記水処理膜に付着していた金属系スケール11を除去する第一洗浄工程を行った後、酸化剤を含む第二洗浄液を少なくとも前記一次面に接触させ、前記水処理膜に付着していた有機系スケール12を除去する第二洗浄工程を行う、水処理膜の洗浄方法。
Also published as
SA517381980
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