The invention discloses a fast and
effective treatment method for acid waste water from
nonferrous metal mines. The method mainly comprises four steps of iron
precipitation reaction,
solid-liquid separation, sulfidizing and neutralizing treatment, to be specific, firstly, carrying out iron
precipitation on acid waste water by adding an alkaline
reagent or
phosphate,
sulfide or other chemicals, adding a sulfurizing
reagent or a heavy
metal chelating agent, so as to enable
copper ions or other heavy
metal ions in the waste water to generate precipitates, adding an alkaline
reagent for neutralizing treatment, and using the treated liquid and treated
slag after neutralizing treatment in the
mineral processing process according to a certain ratio. According to the characteristics that water quantity of acid waste water from the
nonferrous metal mines is large, the
water quality is complex and the quantity of
slag generated by treatment is large, the acid waste water is treated steps by steps and then returned to the
mineral processing process, and the effects of not influencing
mineral processing production indexes and even improving the mineral
processing production indexes are realized, so that
zero emission of the acid waste water and zero storage of
slag are realized, the construction period of a project is shortened, construction quantity of the project is reduced, and the construction investment and running cost are reduced.