A SWITCHABLE FORWARD OSMOSIS SYSTEM, AND PROCESSES THEREOF

The present application provides a switchable forward osmosis system, and processes thereof. In particular, this application provides a process for treating an aqueous feed stream, comprising: forward osmosis using an aqueous draw solution having a draw solute concentration of ≥20 wt%, the draw solu...

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Bibliographic Details
Main Authors HOLLAND, Amy Marie, CLARK, Timothy James, RESENDES, Rui, DUMONT, Robert Harold Jean, MARIAMPILLAI, Brian Ernest
Format Patent
LanguageEnglish
French
German
Published 12.10.2022
Subjects
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:The present application provides a switchable forward osmosis system, and processes thereof. In particular, this application provides a process for treating an aqueous feed stream, comprising: forward osmosis using an aqueous draw solution having a draw solute concentration of ≥20 wt%, the draw solute comprising ionized trimethylamine and a counter ion; wherein, the feed stream: (i) comprises ≥5wt% total dissolved solids; (ii) is at a temperature of ≤20°C; (iii) is at a temperature between ≥30°C - ≤60°C; (iv) has an acidic pH or a basic pH; (v) comprises organic content; (vi) comprises suspended solids; (vii) or any combination of two or more of i) - v). Also provided herein are the related system and draw solution for performing the process, and various uses thereof for treating typically difficult to dewater feed streams.
Bibliography:Application Number: EP20220154367