Title:
SEAWATER DESALINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/105550
Kind Code:
A1
Abstract:
Provided is a seawater desalination device capable of obtaining fresh water stably at a low operating cost by reduction of clogging of a reverse osmosis membrane.
A seawater desalination device using a reverse osmosis membrane (3) is provided with a pretreatment unit (1) which is disposed at a stage prior to the reverse osmosis membrane (3) and pretreats seawater (10) supplied to the reverse osmosis membrane (3), a measurement means (5) which measures a water quality item of treated water (11) by the pretreatment unit (1), and a control means (7) which controls the pretreatment unit (1) on the basis of a concentration value (FFPc) from a measured value by the measurement means (5) and the target value (FFPt) of the concentration value. The measurement means (5) measures the water quality item indicating an organic matter amount. The water desalination device is provided with a separation means (8) which eliminates organic matter at a stage prior to the measurement means (5) for the water quality item indicating the organic matter amount.
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Inventors:
SUMIKURA MISAKI (JP)
TADOKORO HIDEYUKI (JP)
SANGU YUTAKA (JP)
NOBUTOMO YOSHIHIRO (JP)
TACHI TAKAHIRO (JP)
YAMANOI ICHIRO (JP)
KAGEYAMA KOJI (JP)
TADOKORO HIDEYUKI (JP)
SANGU YUTAKA (JP)
NOBUTOMO YOSHIHIRO (JP)
TACHI TAKAHIRO (JP)
YAMANOI ICHIRO (JP)
KAGEYAMA KOJI (JP)
Application Number:
PCT/JP2011/054286
Publication Date:
September 01, 2011
Filing Date:
February 25, 2011
Export Citation:
Assignee:
HITACHI LTD (JP)
SUMIKURA MISAKI (JP)
TADOKORO HIDEYUKI (JP)
SANGU YUTAKA (JP)
NOBUTOMO YOSHIHIRO (JP)
TACHI TAKAHIRO (JP)
YAMANOI ICHIRO (JP)
KAGEYAMA KOJI (JP)
SUMIKURA MISAKI (JP)
TADOKORO HIDEYUKI (JP)
SANGU YUTAKA (JP)
NOBUTOMO YOSHIHIRO (JP)
TACHI TAKAHIRO (JP)
YAMANOI ICHIRO (JP)
KAGEYAMA KOJI (JP)
International Classes:
C02F1/44; B01D61/02; B01D61/04; B01D61/16; B01D61/22; C02F1/28; C02F1/42; C02F9/00
Foreign References:
| JP2005230774A | 2005-09-02 | |||
| JP2007252978A | 2007-10-04 | |||
| JP2002143849A | 2002-05-21 | |||
| JP2007245003A | 2007-09-27 | |||
| JPH0951800A | 1997-02-25 | |||
| JP2011002397A | 2011-01-06 | |||
| JP2011088053A | 2011-05-06 |
Attorney, Agent or Firm:
ISONO Michizo (JP)
Michizo Isono (JP)
Michizo Isono (JP)
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Claims: