紫外-高级氧化联合处理采气污水中残留甲醇研究  

Study on Treating Residual Methanol in Gas Field Wastewater by UV-AOPs

作　　者：谢娟[1] 王新强[1] 屈撑囤[1] 张涛[2] 

机构地区：[1]西安石油大学化学化工学院,陕西省油气田环境污染控制与储层保护重点实验室,陕西西安710065 [2]兰州城市学院培黎石油工程学院,甘肃兰州730070

出　　处：《环境科学与技术》2016年第3期80-84,共5页Environmental Science & Technology

基　　金：陕西省社会发展攻关计划(2011K17-03-11);陕西省教育厅专项科研计划项目(2010JK783)

摘　　要：为了提高污水中残留甲醇的降解率,采用UV/TiO_2/H_2O_2、UV/Fenton、UV/H_2O_2/草酸铁等高级氧化法对甲醇降解进行试验研究,探讨了各处理体系对甲醇降解率的影响。结果表明,当甲醇初始浓度大约为1 000 mg/L时,单独UV对甲醇的降解率低于10%;以产生大量·OH为主的UV-AOPs方法使甲醇的降解率显著提高,其中UV/H_2O_2/草酸铁效果最好,甲醇降解率可达95.8%,UV/TiO_2/H_2O_2和UV/Fenton处理甲醇的降解率分别为84.8%、94%。当UV-高级氧化处理时间超过1 h时,超过90%甲醇可氧化为CO_2。In order to improve degradation of residual methanol in gas field wastewater,advanced oxidation processes such as UV/TiO2/H2O2,UV/Fenton,UV/H2O2/ferric-oxalate were used to degrade methanol,and the effect of various processes on degradation efficiency of methanol were compared. Results show that when initial concentration of methanol solution was approximately 1 000 mg/L,degradation rate of methanol was below 10% under individual UV radiation. UV-AOPs method with a large number of ·OH could enhance the degradation rate of methanol significantly,in which the effect of the UV/H2O2/ferric-oxalate method was the best,with degradation rate of methanol as 95.8%. The degradation rates of methanol by UV/TiO2/H2O2 and UV/Fenton were 84.8% and 94% respectively. When the treatment time was longer than 1 h using UV-AOPs,more than 90% methanol could be oxidized to CO2.

关 键 词：UV 高级氧化 甲醇 降解 

分 类 号：X703[环境科学与工程—环境工程]