Method for neutralizing biological oxidation liquid by utilizing alkaline solid wastes

The invention belongs to the technical field of treatment of acidic oxidation waste liquor in biological oxidation gold extraction and in particular relates to a method for neutralizing biological oxidation liquid by utilizing alkaline solid wastes. The method comprises the following steps: 1) performing staged pretreatment on the alkaline solid wastes through a pretreatment system; 2) conveying the alkaline solid wastes meeting fineness requirements in the staged pretreatment process into a mixing tank, and performing size mixing; 3) conveying the alkaline solid wastes in the mixing tank into an acid-base neutralization reaction process in an ore pulp form, and carrying out an acid-base neutralization reaction between the alkaline solid wastes and biological oxidation liquor in the acid-base neutralization reaction process; and 4) conveying neutralization dreg meeting the emission standard in the acid-base neutralization reaction process to tailings through a slurry pump. According to the method disclosed by