摘要
采用超滤膜聚丙烯腈(PAN),分别选用直接超滤和混凝-超滤工艺进行了含油废水的处理试验研究,探讨了操作压力、膜面流速对膜通量的影响,以及对石油类和COD的去除效率。试验结果表明:超滤法处理含油废水去除率高,出水水质稳定,石油类和COD去除率高于90%,适宜的操作压力与膜面流速分别为0.06 MPa和0.6 m/s;采用混凝工艺作预处理,在其后超滤过程中,膜通量变化比直接超滤下降幅度小,且能保持较高通量较长时间的运行。
This paper studies the ultrafiltration and flocculation-ultrafiltration effects on treatment of oily wastewater with PAN membrane. The effect of TMP and membrane flow velocity on membrane flux is discussed, the removal pollutant efficiency is analyzed. The experimental results show that the stable removal efficiency of oil and COD are observed in both systems, and they are not less than 90%. Two optimum parameters are 0.06 MPa（TMP） and 0.6 m/s（flow velocity） . In the flocculation-ultrafiltration system, the membrane flux has relevant less decrease than the one in the ultrafiltration system, and it can be kept in a long period. 8 figs, 8 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第5期115-118,共4页
Journal of Chang’an University(Natural Science Edition)
基金
陕西省自然科学基金项目(2001C03)
关键词
环境工程
含油废水
超滤
PAN
混凝
膜通量
environmental engineering
oily wastewater
ultrafiltration
PAN
flocculation
membrane flux
