Bi2O3催化氧化法处理选矿废水试验研究

研究了用Bi₂O₃催化氧化法处理含黄药的模拟选矿废水的降解效果，分别考察了光照与否、反应时间、废水的pH值、Bi₂O₃用量、黄药浓度、催化剂可重复利用性等因素对催化氧化效果的影响。结果表明，黄药初始浓度30 mg/L，自然pH=7.2，Bi₂O₃用量为1 g/L且无光照条件下搅拌反应60 min，黄药降解率可达99.74%，催化剂重复利用4次仍有较好的活性，且在黄药降解过程中不产生任何中间产物，具有较高的实用价值。

Experimental Research on Wastewater Treatment of Beneficiation with Bi2O3 Catalytic Oxidation

The degradation effect of treating the simulating beneficiation wastewater containing xanthate with Bi₂O₃ catalytic oxidation was investigated to check out the effect of light or not, the reaction time, pH value in wastewater, the dosage of Bi₂O₃, the concentration of xanthate, the reusability of catalyst on the catalytic oxidation.The results showed that with the initial xanthate concentration of 30 mg/L, the natural pH=7.2, Bi₂O₃ dosage of 1g/L, no light and stirring for 60min, the degradation rate of xanthate reached 99.74%.If reused for four times, the catalyst still has a good activity.Moreover, in the degradation process of xanthate, no intermediate product was produced.So it has a high practical value.