【摘要】 以猛炸药TNT为最终目标降解物,采用响应曲面分析方法(RSM),探讨紫外光光照时间、电解电流、溶液pH三者交互作用对TNT废液降解处理效果的影响,并对工艺参数进行优化。结果表明:试验因子与评价指标之间的关系符合二次方程模型;UV/TiO2协同交变脉冲电流对TNT废液处理最优工艺条件是:紫外光光照时间2.5 h(波长366~380 nm,催化剂为TiO2)、电解电流75 A(脉冲峰值电流)、溶液pH 3.7,在此工艺条件下,TNT废液的COD去除率可达81.34%。更多还原

【Abstract】 Regarding TNT as the final degradation target,the response surface methodology( RSM) is applied to discuss the effects of UV illumination time,electrolytic current and pH on TNT liquid waste degradation processing and the parameters are optimized. The results show the relation between variables and evaluation indexes accords with the quadratic model; when treating TNT liquid waste with UV /TiO2 and pulsed current,the optimum conditions should be: UV illumination time of 2. 5 h,electrolytic current of 75 A and pH = 3. 7 and under this condition,the removal rate of TNT can reach 81. 34%.更多还原