Metal-laden waters: a headache or a gold mine?

Large volumes of acidic, metal-laden waters generated during mining operations contain high levels of dissolved and biologically persistent toxicity hazards. More and more such waters are reused during operations but they still present a legacy problem at the end of mine life.

Costly treatment before discharge/reuse is often needed. Traditional precipitation treatments use lime to neutralise and remove the dissolved metal toxins as insoluble solids.