活性炭-臭氧处理某炼厂反渗透浓水的实验研究  

Experimental study on treatment of reverse osmosis concentrated water from a refinery by activated carbon-ozone technology

作　　者：白小霞 杨庆[1] 丁昀[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070

出　　处：《现代化工》2016年第3期58-61,共4页Modern Chemical Industry

摘　　要：针对某炼化企业反渗透(RO)浓水进行臭氧氧化与活性炭催化臭氧氧化的静态实验研究。考察臭氧氧化中p H与反应时间对处理效果的影响,结果表明,在p H=8.14,反应时间为40 min时,COD去除率可达45%。对活性炭进行3种方式改性,结果表明,双氧水改性活性炭的催化效果最好。分别测定各工艺出水B/C值,发现催化臭氧氧化出水的B/C值为0.38,而仅单独臭氧氧化出水的B/C值就可高达0.54,鉴于催化臭氧氧化出水COD并未达排放标准,可以考虑采取臭氧氧化作为生化单元的预处理工艺。Static experiments of treating the reverse osmosis concentrated water from a petrochemical enterprise by ozonation and activated carbon catalytic ozonation methods are separately carried out. The effects of p H and reaction time on the ozone oxidation are investigated. The results show that the removal rate of COD can be up to 45% when p H is8. 14 and the reaction time is 40 min. The modification of activated carbon is performed by three methods. The catalytic effect of hydrogen peroxide modified activated carbon is the best. The B / C value of the effluent treated by activated carbon catalytic ozonation technology is 0. 38. However,the B / C value of the effluent treated single ozonation is as high as 0. 54,indicating that the COD of the effluent treated by single ozonation method does not reach the emission standard.So,the ozonation step can be used as pretreatment process of biochemical unit.

关 键 词：催化臭氧氧化 RO浓水 活性炭改性 可生化性 

分 类 号：X703[环境科学与工程—环境工程]