材料期刊网

很多有色金属矿山在开发过程中,会产生大量含铜酸性废水.由于酸性废水含铜浓度差异性较大,采取的处理工艺也会有所不同.针对某矿山含铜酸性废水进行了大量的工业试验研究,结果表明,较高浓度含铜酸性废水可采取硫化法回收铜金属,再经环保中和处理后循环利用,可大量减少中和渣产生量,降低环保处理成本,有显著的经济、环保效益.同时,为了防范极端气候下的环境风险,该矿山还建设了足够处理能力的备用石灰中和处理系统以及应急液碱(片碱)加药系统,以供同类矿山参考、借鉴.

Copper-containing acid mine drainage wiu be produced in the nonferrous metal mining activities. The selection of the treatment technology depends upon Cu2+ concentration in acid mine drainage. In this paper, a large number of industrial experiments for acid wastewater treatments have been carried out for a copper mine. The results show that for the high concentration copper-containing wastewater, the method of recovering copper from wastewater followed by neutralization was adopted, which could greatly reduce the generation of neutralization slag, lower the water treatment cost, and make significant economic and environmental benefits. Meanwhile, in order to prevent environmental risks of extreme weather, spare lime neutralization treatment system and emergency liquid caustic (soda) system of sufficient processing capacity have been constructed, thus providing reference for similar nonferrous metal mines.