REGENERATIVE WATER SOFTENING DEVICE

Title:

REGENERATIVE WATER SOFTENING DEVICE

Document Type and Number:

WIPO Patent Application WO/2012/157236

Kind Code:

A1

Abstract:

This water softening device (201) is provided with: a negative electrode (8) and a positive electrode (9); at least one water-splitting ion exchange membrane (1) that has a positive ion exchange surface (1a) on one surface, has a negative ion exchange surface (1b) on the other surface, and is layered between the negative electrode and the positive electrode in a manner so that the negative ion exchange surface faces the positive electrode and the positive ion exchange surface faces the negative electrode; and a casing (7) that houses the negative electrode, the positive electrode, and the at least one water-splitting ion exchange membrane. The casing has: a first entrance (10) and a first exit (11) that are respectively the entrance and exit for water for processing; and a second entrance (12) and second exit (13) that are respectively the entrance and exit for water for regeneration. The differential pressure of the water for processing between the first entrance and the first exit is greater than the differential pressure of the water for regeneration between the second entrance and the second exit at the same flow rate as that of the water for processing.

Inventors:

YAMADA MUNETO
UNO KATSUHIKO
SASABE SHIGERU
SHIMA MICHIHIRO
SHIMATO TAKAAKI
OHAMA MASAHIRO
SANO MITSUHIRO

Application Number:

PCT/JP2012/003105

Publication Date:

November 22, 2012

Filing Date:

May 11, 2012

Export Citation:

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Assignee:

PANASONIC CORP (JP)
YAMADA MUNETO
UNO KATSUHIKO
SASABE SHIGERU
SHIMA MICHIHIRO
SHIMATO TAKAAKI
OHAMA MASAHIRO
SANO MITSUHIRO

International Classes:

C02F1/42; B01J43/00; B01J47/12; B01J49/00

Foreign References:

JP2001509074A	2001-07-10
JP2009233556A	2009-10-15
JP2010069408A	2010-04-02
JP2007501702A	2007-02-01
JP2010201346A	2010-09-16
JP4044148B2	2008-02-06

Other References: