DRAWING AGENT FOR FORWARD OSMOSIS OR PRESSURE RETARDED OSMOSIS AND CORRESPONDING SYSTEM

Title:

DRAWING AGENT FOR FORWARD OSMOSIS OR PRESSURE RETARDED OSMOSIS AND CORRESPONDING SYSTEM

Document Type and Number:

WIPO Patent Application WO/2018/173329

Kind Code:

A1

Abstract:

Embodiments provide a water treatment system capable of separating water at low cost and a working medium. A water treatment system of an embodiment includes: a first treatment container having an osmosis membrane to partition a first chamber for accommodating water to be treated and a second chamber for accommodating a working medium to induce osmotic pressure. The working medium is an aqueous solution containing a compound having an ammonium salt structure of a phosphonic acid group in a main chain, a side chain, or a main chain and a side chain or a compound having a metal salt structure of a phosphonic acid group in a main chain, a side chain, or a main chain and a side chain as a solute.

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Inventors:

SUZUKI AKIKO (JP)
IDE TOMOHITO (JP)
SANO KENJI (JP)
IMADA TOSHIHIRO (JP)

Application Number:

PCT/JP2017/033657

Publication Date:

September 27, 2018

Filing Date:

September 19, 2017

Export Citation:

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Assignee:

TOSHIBA KK (JP)

International Classes:

B01D61/00; F03G7/00

Foreign References:

CN105597540A	2016-05-25
US20160288053A1	2016-10-06
US9221018B1	2015-12-29
US20130048564A1	2013-02-28
JP2010509540A	2010-03-25

Attorney, Agent or Firm:

IKEGAMI, Tetsuma et al. (JP)

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