Abstract: Experiments of autogenous sedimentation, coagulating sedimentation and activated-carbon adsorbing separation etc. disposed mining wastewater were conducted in order to reuse mining wastewater. The results showed that COD_cr and heavy metal ion of wastewater could be removed effectively by coagulating sedimentation-activated carbon adsorbing separation; the disposed wastewater could be discharged directly or reused to mineral concentration without influencing mineral concentration process. The zero discharge of mineral concentration wastewater could be realized.