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公开(公告)号:US10023475B2
公开(公告)日:2018-07-17
申请号:US14435924
申请日:2013-10-17
申请人: Kuraray Co., Ltd.
发明人: Satoru Arita , Shizuo Ishimura , Tetsuya Hanamoto
IPC分类号: C02F1/28 , B01D39/20 , B01J20/20 , B01J20/28 , B01J20/30 , B01D24/00 , B01D24/20 , C02F101/12 , C02F101/36
摘要: A water-processing filter having a high dimensional accuracy and an improved filterability (such as a capability to remove turbidity components) is provided. The water-processing filter comprises (A) a hollow cylindrical filter which comprises (a1) a granular activated carbon having a median particle size of 30 to 80 μm and (a2) a fibrillated fibrous binder. The cylindrical filter (A) has an upstream outer surface having an arithmetical mean deviation of a waviness profile adjusted to not more than 30 μm and an arithmetical mean deviation of a primary profile adjusted to 35 to 45 μm. The cylindrical filter (A) may have a downstream inner surface having an arithmetical mean deviation of a waviness profile of not more than 30 μm and an arithmetical mean deviation of a primary profile of 35 to 45 μm. The cylindrical filter (A) may have a grounded outer surface. In a hollow space of the cylindrical filter (A), (B) a cylindrical filter comprising (b1) a granular activated carbon having a median particle size of 30 to 80 μm and (b2) a granular binder may be disposed.