DESALINIZATION SYSTEM AND DESALINIZATION METHOD

WIPO Patent Application WO/2013/031543

A1

This desalinization system (S), which obtains industrial-use water and drinking water from seawater and wastewater, is provided with the following: a purification device (1) that purifies wastewater by removing activated sludge therefrom; a first RO membrane (2) that removes salt from the output of the purification device (1) by transferring said salt to first concentrated water (s6), thereby producing industrial-use water (s1); a UF membrane (3) that seawater passes through and that removes particulates from said seawater; a second RO membrane (4) that removes salt from the treated output (s5b) of the UF membrane (3) by transferring said salt to second concentrated water (s7), thereby producing drinking water (s2); an agitation device (5) to which the second concentrated water (s7) from the second RO membrane (4) and the first concentrated water (s6) from the first RO membrane (2) are sent to be agitated; and a third RO membrane (6) that removes salt from the liquid mixture agitated by the agitation device (5) by transferring said salt to third concentrated water (s9), thereby producing industrial-use water (s3).

SEKINE YASUNORI (JP)
NOTO KAZUHIKO (JP)
SASAKI AKIRA (JP)
KITAMURA KOTARO (JP)

PCT/JP2012/070792

March 07, 2013

August 16, 2012

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HITACHI PLANT TECHNOLOGIES LTD (JP)
SEKINE YASUNORI (JP)
NOTO KAZUHIKO (JP)
SASAKI AKIRA (JP)
KITAMURA KOTARO (JP)

C02F1/44; B01D61/02; B01D61/06; B01D61/10; B01D61/14; B01D61/58; C02F3/12

JP4481345B1	2010-06-16
JP2003285058A	2003-10-07
JP2005279540A	2005-10-13

ISONO Michizo (JP)
Michizo Isono (JP)

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