Title:
WATER TREATMENT DEVICE AND OPERATING METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2016/030945
Kind Code:
A1
Abstract:
A water treatment device is provided with: a primary reverse osmosis membrane device (80S); a line (52) for a liquid to be treated wherein seawater (SW) is fed to the primary reverse osmosis membrane device (80S); a primary water supply pump (11) for pressure feeding seawater to the primary reverse osmosis membrane device (80S); a secondary reverse osmosis membrane device (80M); a line (55) for a primary treated liquid wherein a primary treated liquid (W1), which is a resulting product of seawater passing through the primary reverse osmosis membrane device (80S) and flowing out of the primary reverse osmosis membrane device (80S), is fed to the secondary reverse osmosis membrane device (80M); and a secondary water supply pump (71) for pressure feeding the primary treated liquid to the secondary reverse osmosis membrane device (80M) at a pressure higher than the osmotic pressure of the primary treated liquid (W1). The water treatment device is further provided with a bypass line (59) that connects the line (52) for the liquid to be treated and a point between the primary reverse osmosis membrane device and the secondary water supply pump in the line (55) for the primary treated liquid so that the liquid to be treated bypasses the primary reverse osmosis membrane device.
Inventors:
ITO YOSHIAKI (JP)
IWAHASHI HIDEO (JP)
MATSUI KATSUNORI (JP)
TOKUNAGA KIICHI (JP)
KAWADA MASANORI (JP)
IWAHASHI HIDEO (JP)
MATSUI KATSUNORI (JP)
TOKUNAGA KIICHI (JP)
KAWADA MASANORI (JP)
Application Number:
PCT/JP2014/072164
Publication Date:
March 03, 2016
Filing Date:
August 25, 2014
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
B01D61/04; B01D65/02
Foreign References:
| JP2013202586A | 2013-10-07 | |||
| JPH0852462A | 1996-02-27 | |||
| JP2014128767A | 2014-07-10 | |||
| US20050016922A1 | 2005-01-27 | |||
| JP2011031121A | 2011-02-17 | |||
| JPH0768259A | 1995-03-14 | |||
| JP2012176343A | 2012-09-13 |
Attorney, Agent or Firm:
MORI Ryuichirou et al. (JP)
Woods Ryuichiro (JP)
Woods Ryuichiro (JP)
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