Title:
海水淡水化装置
Document Type and Number:
Japanese Patent JP5496707
Kind Code:
B2
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.
Inventors:
Misaki Sumikura
Hideyuki Tadokoro
Yutaka Sannomiya
Nobuhiro Yoshihiro
Takahiro Tate
Ichiro Yamanoi
Koji Yinyama
Hideyuki Tadokoro
Yutaka Sannomiya
Nobuhiro Yoshihiro
Takahiro Tate
Ichiro Yamanoi
Koji Yinyama
Application Number:
JP2010041519A
Publication Date:
May 21, 2014
Filing Date:
February 26, 2010
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
C02F1/44; B01D61/02; B01D61/04; B01D61/16; B01D61/22; B01D61/58; B01D71/02; C02F1/28; C02F1/42; C02F9/00
Domestic Patent References:
| JP2008068200A | ||||
| JP2007245078A | ||||
| JP2005230774A | ||||
| JP2007252978A | ||||
| JP2002143849A | ||||
| JP2007245003A | ||||
| JP9051800A | ||||
| JP2011002397A |
Foreign References:
| WO2010150424A1 |
Attorney, Agent or Firm:
Isono Dozo
Etsuo Tada
Etsuo Tada