Method for treating collophanite positive and reverse flotation beneficiation wastewater

The invention aims to provide a method for treating collophanite positive and reverse flotation beneficiation wastewater. In the method, a dual-base method is adopted to make various ions being not beneficial to a beneficiation flotation process in the wastewater precipitate to be removed. The method comprises the following concrete steps of: (1) firstly, adding refined lime to the collophanite positive and reverse flotation beneficiation wastewater for reacting to obtain a reaction system containing sediments, and marking as the reaction system 1; (2) adding soda ash to the reaction system 1 for reacting to obtain a reaction system 2 containing the sediments; and (3) making the reaction system 2 precipitate and removing the sediments to obtaine the treated collophanite positive and reverse flotation beneficiation wastewater. The wastewater treated by the process completely meets the beneficiation water index requirement, and the recovery rate of the water is not less than 99 percent. The process reduces the beneficiation water cost and meanwhile also avoids environmental pollution caused by the reason that the wastewater is directly discharged.