Title:
凝集濾過方法
Document Type and Number:
Japanese Patent JP5793887
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a flocculating/filtering method with which flocculation filtrated water of excellent water quality can be obtained at low cost.SOLUTION: The flocculating/filtering method includes adding a cationic flocculant to treated water for a flocculation treatment, and then filtering the treated water by a filter in which at least a portion of a filter medium is replaced with cation-exchange resin. As for the cation exchange resin, weak acid exchange resin is used. When the water quality of the filtrated water from the filter exceeds a predetermined value, the weak acid cation exchange resin is regenerated.
Inventors:
Satoshi Yamada
Application Number:
JP2011040405A
Publication Date:
October 14, 2015
Filing Date:
February 25, 2011
Export Citation:
Assignee:
Kurita Water Industries Ltd.
International Classes:
C02F1/52; B01D61/04; B01J49/00; C02F1/00; C02F1/24; C02F1/42; C02F1/44; C02F9/00
Domestic Patent References:
| JP2007130526A | ||||
| JP2008238030A | ||||
| JP54075860A | ||||
| JP2007098270A | ||||
| JP8071552A | ||||
| JP7039870A | ||||
| JP2010119978A | ||||
| JP2006181445A | ||||
| JP58074181A | ||||
| JP57032782A | ||||
| JP2002079268A | ||||
| JP2010155181A | ||||
| JP2003245664A |
Foreign References:
| WO2009020157A1 |
Attorney, Agent or Firm:
Tsuyoshi Shigeno