O3/H2O2与O3/Mn氧化工艺去除水中难降解有机污染物的对比研究

被引：30

作者：

石枫华

马军

机构：

[1] 哈尔滨工业大学市政环境工程学院,哈尔滨工业大学市政环境工程学院哈尔滨,哈尔滨

来源：

环境科学 | 2004年 / 01期

基金：

黑龙江省自然科学基金;

关键词：

臭氧; H2O2; Mn(Ⅱ); 催化氧化; 羟基自由基; 难降解有机污染物; 饮用水;

D O I：

10.13227/j.hjkx.2004.01.015

中图分类号：

TU991.2 [净水工程（给水处理）];

学科分类号：

0815 ;

摘要：

以硝基苯为代表性有机污染物 ,对比研究了O3 /H2 O2 与O3 /Mn氧化工艺去除水中难降解有机污染物的效能与机理 .结果发现 ,2种催化氧化工艺均可以提高不易被单独臭氧氧化的硝基苯的去除效果 ,并且催化剂H2 O2 和Mn(Ⅱ )存在着最佳投量 .从已知的O3 /H2 O2 工艺反应机理 ,并根据硝基苯的化学性质和水中剩余臭氧动态监测结果推断 ,O3 /Mn降解硝基苯可能同样遵循自由基反应机理 .向反应系统中投加H2 O2 和Mn(Ⅱ )还提高了臭氧的传质效果和有效利用率 .对 2种催化氧化工艺的特点和在实际水处理中应用进行了分析和探讨 .

引用

页码：72 / 77

页数：6

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