表面活性剂强化超滤法处理亚甲基蓝废水  

Treatment of Wastewater Containing Metylene Blue by Surfactant Enhanced Ultrafiltration Process

作　　者：庞治娟[1] 周迟骏[1] 苗光健[1] 

机构地区：[1]南京工业大学环境学院,江苏南京210009

出　　处：《化工环保》2009年第4期296-299,共4页Environmental Protection of Chemical Industry

基　　金：国家高技术研究发展计划(863)项目(2007AA06A402)

摘　　要：采用无机陶瓷超滤膜和低浓度阴离子表面活性剂十二烷基苯磺酸钠(SDBS)处理亚甲基蓝(MB)模拟废水,考察了废水中SDBS、MB浓度及废水pH对超滤过程的影响。实验结果表明:SDBS浓度影响MB在最大吸收波长处的吸光度值;当废水中SDBS浓度为1.20 mmol/L(即25℃时的临界胶束浓度)、废水中MB浓度为1.00 mmol/L、废水pH为9.0时,超滤效果最好;在此条件下,透过液中SDBS浓度和MB浓度分别为0.06 mmol/L和0.01 mmol/L,MB的截留率为99.2%,膜通量为309.6 L/(m^2·h)。SDBS对MB超滤过程的强化机理主要为MB与SDBS形成结合体析出及SDBS胶束的增溶作用。The simulated wastewater containing metylene blue （MB） was treated using inorganic ceramic ultrafiltration membrane and sodium dodecyl benzene sulfonate （SDBS）, a kind of anionic surfactant and with low concentration. The effects of SDBS and MB concentrations and wastewater pH on the ultrafiltration were examined. The experimentai results show that： The SDBS concentration affects the maximum absorbance of MB; The ultrafiltration effect is the best when the SDBS concentration is 1.20 mmol/L （ which is equal to the micelle critical concentration at 25 ℃ ）, the MB concentration is 1.00 mmol/L and the wastewater pH is 9.0; Under these conditions, the concentrations of SDBS and MB in the permeate are 0.06 mmol/L and 0.01 mmol/L respectively, the retention rate of MB is 99.2%, the membrane flux is 309.6 L/（ mE ^2·h）. The enhancement mechanism of SDBS on ultrafiltration of MB is precipitation of the MB-SDBS complex and solublization of the SDBS micelle.

关 键 词：阴离子表面活性剂 亚甲基蓝 染料 强化 超滤 废水处理 

分 类 号：X788[环境科学与工程—环境工程]