发明名称 |
SEPARATION MEMBRANE FOR PRETREATMENT OF SEAWATER DESALINATION, APPARATUS FOR PRETREATMENT OF SEAWATER DESALINATION, APPARATUS FOR SEAWATER DESALINATION AND METHOD FOR SEAWATER DESALINATION |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a separation membrane for pretreatment of seawater desalination, an apparatus for pretreatment of seawater desalination and a method for seawater desalination by which sufficient amount of raw water can be constantly supplied to a reverse osmosis (RO) membrane by maintaining high flux and without raising pressure while removing TEP (transparent exopolymer particles) at a high removing ratio. <P>SOLUTION: In the separation membrane for pretreatment of seawater desalination used for pretreatment of seawater desalination using the reverse osmosis membrane, filtration is carried out at a constant flux and standard flux A, which is defined as a maximum value of fluxes capable of satisfying P2≤1.5×P1 between average transmembrane pressure difference P1 at a period for initial 30 minutes and average transmembrane pressure difference P2 at a period for 30 minutes after 120 minutes have passed, is not less than 2 m/d and a saccharides removal rate B or a granular carbon removal rate C is not less than 0.3, more preferably not less than 0.5. <P>COPYRIGHT: (C)2013,JPO&INPIT |
申请公布号 |
JP2012213773(A) |
申请公布日期 |
2012.11.08 |
申请号 |
JP20120136696 |
申请日期 |
2012.06.18 |
申请人 |
SUMITOMO ELECTRIC IND LTD |
发明人 |
KASHIWABARA HIDEKI;YAHAGI SATOSHI;MOKURA SHUJI |
分类号 |
B01D69/02;B01D61/02;B01D61/14;B01D61/16;B01D61/58;B01D71/36;C02F1/44 |
主分类号 |
B01D69/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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