O_3-Ca(OH)_2体系处理苯酚废水  

Treatment of phenol wastewater in O_3-Ca(OH)_2 system

作　　者：程雯 全学军[1] 赵清华[1] 李瑞恒[1] 吴俊[1] 杨鲁 CHENG Wen1,QUAN Xuejun1,ZHAO Qinghua1,LI Ruiheng1,WU Jun1,YANG Lu2(1. College of Chemistry and Chemical Engineering,Chongqing University of Technology,Chongqing 400054,China;2. Chongqing Collaborative Innovation Center of Municipal Solid Waste Resource Utilization ＆ Treatment,Chongqing 401331,Chin)

机构地区：[1]重庆理工大学化学化工学院,重庆400054 [2]重庆市生活垃圾资源化处理协同创新中心,重庆401331

出　　处：《化工环保》2018年第3期282-287,共6页Environmental Protection of Chemical Industry

基　　金：国家自然科学基金项目(21176273);重庆市百名工程技术高端人才项目(2014);重庆市生活垃圾资源化处理协同创新中心项目(Shljzyh2017-003);重庆理工大学研究生创新基金项目(YCX2016239)

摘　　要：研究了苯酚在新型臭氧氧化体系O_3-Ca(OH)_2体系中的降解与矿化效果。实验结果表明:苯酚及TOC的去除率都随着Ca(OH)_2用量(小于2 g/L)、进气臭氧质量浓度(小于75 mg/L)、进气流量(小于3.0 L/min)的增大以及初始苯酚质量浓度的减小而增加,但受反应压力和液相温度的影响较小;当Ca(OH)_2用量大于3 g/L时,苯酚和TOC的去除率在30 min和55 min时分别达到了100%左右;Ca^(2+)的存在实现了羟基自由基清除剂CO_3^(2-)的实时分离去除,从而强化了臭氧氧化过程中苯酚的降解与矿化。这表明,O_3-Ca(OH)_2体系是一种处理难降解有机废水的高效臭氧氧化新体系。The degradation and mineralization of phenol in aqueous solution was investigated in O3-Ca（OH）2 system. The experimental results showed that：The removal rate of phenol and TOC were increased with the increase of Ca（OH）2 amount（less than 2 g/L）,inlet ozone mass concentration（less than 75 mg/L）and gas flow（less than 3.0 L/min）,as well as the decrease of initial phenol mass concentration,but the effects of reaction pressure and liquid phase temperature were little;When the Ca（OH）2 amount exceeded 3 g/L,the removal rate of phenol and TOC reached about 100% at 30 min and 55 min,respectively;With the presence of Ca^2＋,the hydroxyl radical scavenger CO32-was removed and the degradation and mineralization of phenol were intensified in the ozone oxidation process. These indicated that O3-Ca（OH）2 system was a new high-efficient ozone oxidation system for treatment of refractory organic wastewater.

关 键 词：O3-Ca(OH)2体系 苯酚 臭氧氧化 降解 矿化 

分 类 号：X703[环境科学与工程—环境工程]