Purification treatment method for isoamyl acetate waste liquid containing large amount of iodine elementary substance

The invention relates to a purification treatment method for an isoamyl acetate waste liquid containing a large amount of elemental iodine, which comprises the following steps: (a) carrying out first distillation on the isoamyl acetate waste liquid to obtain a first distillate; (b) adding a sodium bicarbonate solution into the first distillate, stirring for the first time, standing, and separating out supernatant liquid; (c) adding anhydrous magnesium sulfate into the supernatant, and stirring for the second time to obtain turbid liquid; (d) carrying out secondary distillation on the turbid liquid to obtain a second distillate; and (e) taking out part of the second distillate, and carrying out third distillation on the residual second distillate to obtain purified isoamyl acetate. The purity of the isoamyl acetate in the treated isoamyl acetate waste liquid is very high, the problem that the waste liquid is difficult to treat can be effectively solved, and the waste liquid can be effectively recycled. Meanwhi