FORWARD OSMOSIS MEMBRANE FLOW SYSTEM AND COMPOSITE SEMIPERMEABLE MEMBRANE FOR FORWARD OSMOSIS MEMBRANE FLOW SYSTEM

Title:

FORWARD OSMOSIS MEMBRANE FLOW SYSTEM AND COMPOSITE SEMIPERMEABLE MEMBRANE FOR FORWARD OSMOSIS MEMBRANE FLOW SYSTEM

Document Type and Number:

WIPO Patent Application WO/2012/169206

Kind Code:

A1

Abstract:

A forward osmosis membrane flow system (1) is provided with: a high osmotic pressure fluid flow section (2) to which a high osmotic pressure fluid is supplied; a low osmotic pressure fluid flow section (3) to which a low osmotic pressure fluid having an osmotic pressure lower than the osmotic pressure of the high osmotic pressure fluid is supplied; and a semipermeable membrane (4) that separates the high osmotic pressure fluid flow section and the low osmotic pressure fluid flow section from each other. The flow rate in the high osmotic pressure fluid flow section (2) is increased by fluid migration from the low osmotic pressure fluid flow section (3) to the high osmotic pressure fluid flow section (2) through the semipermeable membrane (4). The semipermeable membrane (4) is a composite semipermeable membrane which is obtained by forming a polyamide-based skin layer on an epoxy resin porous membrane.

Inventors:

DOI TAKAO (JP)
HAYASHI OSAMU (JP)
HIROSE MASAHIKO (JP)
KOBUKE MAKOTO (JP)
KAWAGUCHI YOSHIHIDE (JP)
HARADA NORIAKI (JP)

Application Number:

PCT/JP2012/003756

Publication Date:

December 13, 2012

Filing Date:

June 08, 2012

Export Citation:

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Assignee:

NITTO DENKO CORP (JP)
DOI TAKAO (JP)
HAYASHI OSAMU (JP)
HIROSE MASAHIKO (JP)
KOBUKE MAKOTO (JP)
KAWAGUCHI YOSHIHIDE (JP)
HARADA NORIAKI (JP)

International Classes:

B01D61/00; B01D71/56; B01D69/12; B01D71/46; F03B17/06; F03G7/00; F04D33/00; F04F99/00

Domestic Patent References:

WO2012001987A1

2012-01-05

Foreign References:

JP2011083664A	2011-04-28
JP2010121122A	2010-06-03
JP2010099654A	2010-05-06
JP2009536878A	2009-10-22

Other References: