Provided is a draw solute which has a low viscosity, can be circulated during a forward-osmosis water treatment, and has a sedimentation under heating and a higher osmotic pressure than that of seawater, when used as a draw solution.
A draw solute comprising at least one of vinyl ether polymer containing an oxyethylene chain in a side chain and having a number average molecular weight (Mn) of 13,000 or less.
本发明提供了一种汲取溶质,该溶质粘度低,可在前渗
水处理过程中循环使用,在加热条件下可沉淀,用作汲取溶液时渗透压高于海
水。
一种汲取溶质,包含至少一种侧链中含有氧
乙烯链的
乙烯基醚聚合物,其平均分子量(Mn)为 13,000 或以下。