某黄金精炼厂含氰废水处理的试验研究

Experimental Study on the Treatment of Cyanide-Containing Wastewater from A Gold Refinery

摘要: 氰化法处理的氰渣属于危险废物，企业需对含氰的氰渣进行处理或者委托有资质的下游企业进行处理，某黄金精炼厂采用洗涤法处理氰渣，将氰渣中的氰转移到洗水中，本试验研究了一种处理含氰废水的方法，采用酸化法 + 因科法，能够将含氰废水中的总氰处理至10 mg/l以下，从而保证了洗水的循环使用，该方法工艺简单，成本较低且指标稳定，为氰渣洗涤工艺的稳定运行提供了良好的技术支撑。

Abstract: Cyanide residue treated by cyanide method belongs to hazardous waste. The enterprise shall handle the cyanide-containing cyanide residue or entrust qualified downstream enterprises to handle it. Cyanide residue was treated by washing in a gold refinery, transferring cyanide from cyanide residue to washing water. The experimental study on a kind of cyanide wastewater treatment methods, adopts acidification method + Inke method. The total cyanide in cyanide-containing wastewater can be treated to less than 10mg/ L, so as to ensure the recycling use of washing water. This method has the advantages of simple process, low cost and stable index, which provides a good technical support for the stable operation of cyanide-containing residue washing process.