Waste-free technology of deironization of acidic water

A new technology of deironization of natural and waste acid waters has been developed. Lime wastes of building material production are used as a reagent. The effect is achieved by introducing 3–4 g/dm³ of pulverized wastes (chippings) with a fraction ～0.1 mm to the water during its continuous stirring for 1–5 h (depending on the water composition and limestone) and initial aeration 10–20min. The technology is waste-free including a new method of dehydration of the sediment that forms and which may be employed, in particular, in nonferrous metallurgy or the production of facing plates.