Forward-osmosis drive liquid for wastewater treatment and preparation method of forward-osmosis drive liquid

The invention discloses a preparation method of forward-osmosis drive liquid for wastewater treatment. The preparation method includes the steps of A, placing maleic anhydride, ethylene glycol dimethacrylate, N-isopropyl acrylamide, 3, 4-dinitrobenzoic acid and quercitol into a reaction kettle, and heating and stirring; B, adding glycerin into reaction products generated in the step A, and evenly stirring; C, adding hexamethylene diisocyanate, hydroxyethyl acrylate, 2, 5-dibromo terephthalic acid, 3-phenyl propyl isothiocyanate and pentyl sulphide, and heating and stirring; D, adding deionized water, and filtering to remove precipitate; E, adding magnesium chloride, calcium chloride, potassium sulfate, iron sulfate, dimethyl maleate and 2-methyl benzhydrol. The invention further discloses the forward-osmosis drive liquid prepared by the method. By the preparation method, the defects of the prior art can be overcome, and the concentration range, with high drive efficiency, of the drive liquid is expanded. 本发明公