多种氧化技术处理选矿废水再回用至白钨精选的影响对比研究

为了解决某钨钼企业在选钨和选钼过程中产生的废水难以回用至钨精选工段的问题,采用次氯酸钠氧化技术、芬顿高级氧化技术、臭氧高级氧化技术处理尾矿库废水,降解其中部分COD,对比处理后的废水回用于钨精选产生的影响,结果表明采用臭氧高级氧化技术处理后的废水回用于钨精选对WO3品位和回收率等指标没有产生影响,次氯酸钠氧化技术、芬顿高级氧化技术由于引入新物质到回用水中,浮选过程中泡沫丰富,易溢槽,对钨精选指标影响很大。臭氧高级氧化技术处理后的尾矿库废水代替或部分代替新水,从而减小了尾矿库的储水压力以及水资源的循环利用,达到节水排放的目的。

Comparative Study on the Influence of Mineral Processing Wastewater Reuse to Scheelite Selection by Multiple Oxidation Techniques

For the purpose of solving the problem that the waste water produced by a tungsten-molybdenum enterprise in the process of tungsten-molybdenum separation is difficult to reuse to the tungsten selection section, sodium hypochlorite oxidation technology, Fenton advanced oxidation technology and ozone advanced oxidation technology are used to treat the tailings reservoir wastewater, and some of them are degraded COD, the effect of comparing the wastewater treated by ozone advanced oxidation technology on tungsten selection. The results show that the reuse of waste water treated by ozone advanced oxidation technology has no effect on the mineral processing index. The waste water of tailings reservoir treated by ozone advanced oxidation technology replaces or partially replaces the new water, thus reducing the water storage pressure of tailings reservoir and the recycling of water resources, so as to achieve the purpose of saving water and discharging.