摘要
采用臭氧氧化法处理模拟苯酚废水,考察了废水pH以及HCO3-、CO32-、HPO42-、H2PO4-和叔丁醇等·OH抑制剂对苯酚降解效果的影响。实验结果表明:苯酚降解率随废水pH的增大而增大;当废水pH=11时,降解25 min后苯酚降解率达到99.55%,比废水pH=5时提高了50.12百分点;CO32-和H2PO4-对·OH的抑制作用分别强于HCO3-和HPO42-;当叔丁醇质量浓度由0增至50 mg/L时,苯酚降解率由99.55%降至69.19%。
The simulated phenol wastewater was treated by ozonation process,and the effects of wastewater pH and ·OH inhibitors,such as HCO3-,CO32-,HPO42-,H2PO4- and tert-butanol,on phenol degradation were studied. The experimental results indicate that：The phenol degradation rate is increased with the increasing of wastewater pH;When the wastewater pH=11 and the degradation time is 25 min,the degradation rate is 99.55%,which is higher than that when the wastewater pH=5 by 50.12 percentage point;The ·OH inhibition effects of CO32- and H2PO4- are greater than those of HCO3- and HPO42- respectively;When the mass concentration of tert-butanol is increased from 0 to 50 mg/L,the phenol degradation rate is decreased from 99.55% to 69.19%.
出处
《化工环保》
CAS
CSCD
北大核心
2014年第1期24-27,共4页
Environmental Protection of Chemical Industry
基金
重庆市国土房管局重大科技攻关项目(CQGT-KJ2012-6)
重庆市应用开发科技项目(cstc2013yykfA20002)
关键词
臭氧氧化
苯酚
降解机理
羟基自由基抑制剂
废水处理
ozonation phenol degradation mechanism hydroxyl radical inhibitor wastewater treatment
