Title:
水処理システム
Document Type and Number:
Japanese Patent JP5751068
Kind Code:
B2
Abstract:
According to one embodiment, a water treatment system includes: a membrane separation device and a water softening device including a valve unit switching between a softening process in which soft water is obtained by passing raw water through a cation exchange resin bed downward and a regeneration process in which a whole of the cation exchange resin bed is regenerated by generating an opposite flow of a regenerant by supplying the regenerant from both sides of a top portion and a bottom portion of the cation exchange resin bed and collecting a liquid at an intermediate portion of the cation exchange resin bed, and a regenerant supply supplying the regenerant in a volume which gives a regeneration level of 1 to 6 eq/L-R, to a hardness leakage prevention region set in a predetermined depth on the bottom portion of the cation exchange resin bed, in the regeneration process.
Inventors:
Atsushi Manabe
Hayato Watanabe
Hayato Watanabe
Application Number:
JP2011164360A
Publication Date:
July 22, 2015
Filing Date:
July 27, 2011
Export Citation:
Assignee:
Miura Industry Co., Ltd.
International Classes:
C02F1/44; B01D61/12; B01J49/00; C02F1/42
Domestic Patent References:
| JP2010082610A | ||||
| JP2002316152A | ||||
| JP2005296945A | ||||
| JP2009112921A | ||||
| JP2011036809A | ||||
| JP2009160585A |
Foreign References:
| WO2010103640A1 |
Attorney, Agent or Firm:
Iwaike Mitsuru
Ryota Kato
Ryota Kato