Recovery processing method for mixed organic solvent

The invention belongs to the technical field of organic solvent recovery and extraction, and provides a mixed organic solvent recovery treatment method. The method comprises the following steps: S1, standing a mixed organic solvent to obtain a standing mixed solvent; s2, removing solid impurities in the standing mixed solvent; obtaining a clean organic mixed solvent; s3, pouring a curing agent into the clean organic mixed solvent; standing to obtain a solid mixture; s4, carrying out high-temperature heating on the fixed mixture; obtaining a high-temperature solution; s5, heating an extracting agent in the high-temperature solution; cooling to obtain a crystal substance and a residual solution; (S6); and extracting the residual solution, and respectively recovering the boiling points of the organic solvents. In the step (4), an extracting agent is an acetone solution, wherein the acetone solution is an acetone aqueous solution with the concentration of 90%-100%; the crystallization temperature in the step (5)