【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。更多还原

【Abstract】 The effectiveness of p-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 of pCNB in water by ozonation was also studied.The results 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 of pCNB-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.更多还原