臭氧氧化降解水中对硝基氯苯的效能与机制  

OZONATION DEGRADATION OF p-CHLORONITROBENZENE IN WATER

作　　者：徐腾娇[1] 陈忠林[1] 沈吉敏[1] 焦中志[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《水处理技术》2007年第1期27-30,共4页Technology of Water Treatment

基　　金：新世纪优秀人才支持计划资助(NCET-04-0321);国家自然科学基金项目(50578052)

摘　　要：研究了臭氧氧化去除水中对硝基氯苯(pCNB)的效能,探讨了pH值、碱度、腐殖质等因素对去除效果的影响,同时研究了臭氧氧化对水中pCNB可生化性的影响。结果表明:pH值对去除效果影响显著,随着pH值增大,pCNB的去除率先上升,后降低。碱度和腐殖质对去除效果的影响是几个因素的共同作用。实验表明,臭氧氧化对水中pCNB可生化性的提高受整体反应过程的控制反应制约,只有在.OH氧化为控制反应时才可有效提高可生化性。The effectiveness ofp-chloronitrobenzene（pCNB） removal by ozonation in water was studied, the influence of pH values, alkalinity and humic acid concentration on the effectiveness was illustrated, and meanwhile the biodegradability ofpCNB in water by ozonation was also studied. The resuits showed that pH had a remarkable influence on the oxidizing effectiveness; the pCNB removal rate went up first and down later with increases of the pH values; the influence of alkalinity and humic acid on removal effectiveness was a result of joint the action by several factors. It was shown that the biodegradability rising ofpCNB-in water was restricted by the controlling whole reaction; only when OH oxidation was the controlling reaction can the biodegradation be improved effectively with effective improvement only under the prevailing oxidization processes involved .OH radicals.

关 键 词：对硝基氯苯 臭氧 PH值 碱度 腐殖质 可生化性 

分 类 号：TQ031.7[化学工程]