金属锰催化臭氧化降解三硝基甲苯功效的实验研究  

An experimental Research of the Removal-TNT with Manganese-catalyzed Ozonation Processes

作　　者：吴耀国[1] 惠林[1] 赵大为[1] 冯文璐[1] 王秋华[1] 

机构地区：[1]西北工业大学理学院,陕西西安710072

出　　处：《兵工学报》2006年第2期339-342,共4页Acta Armamentarii

基　　金：西北工业大学研究生创业种子基金资助项目(Z200580);2006年西北工业大学本科毕业设计(论文)重点扶持项目

摘　　要：以火炸药废水中常见的三硝基甲苯(TNT)为代表性污染物,利用该污染物的去除率及废水化学耗氧量(COD)的变化为评价指标,采用静态实验方法,对比研究了臭氧(O3)单独作用及Mn(Ⅱ)催化臭氧化TNT的降解功效。结果表明:与O3单独作用相比,Mn(Ⅱ)催化臭氧化作用不仅提高TNT去除率,也促进了COD的减少。通过考察Mn(Ⅱ)催化臭氧化降解TNT的影响因素发现,Mn(Ⅱ)催化作用的发生与废水初始pH无关,但作用大小不仅与pH有关,而且还受催化剂的投量与投加方式、TNT初始浓度及O3投加量等的影响。Comparative experiment of O3 and Mn（Ⅱ）-catalyzed ozonation processes were conducted with 2, 4, 6-trinitrotoluene （TNT） as the model pollutant to research the efficacy of Mn（Ⅱ） for enhancing ozonation. It is found that Mn（Ⅱ）-catalyzed ozonation greatly increases the removal efficiency of TNT and COD compared with that achieved by ozonation alone. Several factors that are likely to influence Mn（Ⅱ）-catalysed ozonation process in practical application are investigated. Experimental results demonstrate that the factors include the wastewater pH and TNT concentration, the catalyst dosage and its adding method, ozone dosage and concentration.

关 键 词：化学反应工程 Mn(Ⅱ) 臭氧 催化臭氧化 TNT 火炸药废水 

分 类 号：TQ564.3[化学工程—炸药化工]