【摘要】 试验采用催化氧化法对苯酚废水进行处理。通过设计正交试验考查活性组分种类、负载量、浸渍时间和焙烧温度对处理效果的影响,并在最优条件下对催化剂寿命和总有机碳(TOC)降解进行考查。结果:影响化学需氧量(COD)去除率大小依次是浸渍时间>负载量>焙烧温度>活性组分种类;催化剂最佳条件为活性组分Co,负载量6%,浸渍时间24h,焙烧温度350℃;连续重复10次使用最优催化剂,COD和TOC的含量呈现较好的相关关系;COD去除率由95.08%降到32.48%,对TOC去除率由95.45%降为26.52%。更多还原

【Abstract】 Catalytic oxidation was adopted to treat phenol in the experiment.Orthogonal tests were designed for examining treatment effects that active component,load,dip time and roasting temperature brought in.Finally,under the condition of the optimization,the life of catalyst and total organic carbor(TOC)removal were examined.The results show that the degree of the four factors impacting is dip time>load>roasting temperature> active component;and the optimal combination is active component Co,load 6%,dip time 24h,roasting temperature 350 ℃.In the best condition of catalyst,it shows a good relativity between the chemical Oxygen demand(COD)and TOC remaining amount and COD removal efficiency decreases from 95.08%to 32.48%and TOC decreases from 95.45%to 26.52%after 10times of reuse.更多还原