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Experimental study on cyanide-containing wastewater treatment with microorganism

Liu Qiang,Yang Feng,Wang Xiumei,Shi Qingxia(1.Technology Center of China National Gold Group Corporation;2.Changchun Gold Research Institute)  
The cyanide-degrading conditional experiments with microorganism were implemented in this article.The original cyanide-containing wastewater was the cyaniding deficient liquid after acidizing treatment,taken from the biological oxidation plant of Liaoning Tianli Gold Industry Company.The results indicated that when pH,temperature,rotation speed of shaking table,inoculation amount,amount of glucose and beef extract were respectively 7,28 ℃,110 r/min,50 %,1 g/L and 1 g/L,microorganisms could reach the best cyanide-degrading effect.The concentration of cyanide could be degraded to below 0.5 mg/L from 100 mg/L after 62 hours.
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