Treatment method of mineral processing tailing wastewater

The invention discloses a treatment method of mineral processing tailing wastewater, which belongs to the technical field of wastewater treatment, and comprises the following steps: a total tailing dry basis firstly enters a hydrocyclone group for graded concentration; overflowing water obtained after grading concentration of the hydrocyclone enters a thickening pool to be subjected to precipitation concentration, and if overflowing water of the thickening pool is clarified water reaching the environmental protection standard, the overflowing water is directly discharged; the underflow of the thickening pool and the underflow of the hydrocyclone enter a disc type vacuum filter together to be filtered; if the filtered filtrate is clarified water reaching the environmental protection standard, directly discharging; according to the method, the SS concentration in the waste water of the mineral processing tailings in the Nabi mining industry can be reduced to 25 mg/L or below, the environment-friendly emission s