FORWARD OSMOSIS DRAW SOLUTE FOR INCREASING A WATER TREATMENT EFFECT, A FORWARD OSMOSIS WATER TREATMENT DEVICE USING THE SAME, AND A FORWARD OSMOSIS WATER TREATMENT METHOD USING THE SAME

摘要

PURPOSE: A forward osmosis draw solute, a forward osmosis water treatment device using the same, and a forward osmosis water treatment method using the same are provided to save energy required to separate and collect a forward osmosis draw solution by containing a temperature sensitive oligomer compound of which a structural unit comprises a temperature sensitive moiety.;CONSTITUTION: A forward osmosis draw solute comprises a temperature sensitive oligomer compound of which a structure unit comprises a temperature sensitive moiety. The temperature sensitive oligomer compound further comprises a hydrophilic functional group bonded to one end of a main chain. The temperature sensitive moiety is possibly a monovalent substituent group represent by chemical formula 1, -C (=O)N (R1) (R2). In chemical formula 1, R1 and R2 are respectively hydrogen or a linear or branched C3-C5 alkyl group; and neither R1 or R2 is hydrogen. A forward osmosis water treatment device comprises inflow water, an osmosis draw solution, a semi-permeable membrane, a collecting system, and a connecting unit. The osmosis draw solution contains a forward osmosis draw solute.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Oligomer NIP Aam; (BB) Water soluble; (CC) Water insoluble; (DD) Temperature below LCST; (EE) Temperature above LCST; (FF) H2O; (GG) Hydrogen bond