用于焦化废水处理的PVDF基础膜制备及表征  

Preparation and characterization of PVDF membrane in treatment of coking waste water

作　　者：欧阳曙光[1] 王子侃[1] 苏晓丽[1] 蔡广夺 姚俊艳 朱光恒伟 王刚[1] 

机构地区：[1]武汉科技大学化学工程与技术学院,湖北武汉430081

出　　处：《现代化工》2015年第9期62-66,共5页Modern Chemical Industry

摘　　要：采用浸没沉淀相转化法制膜,考察了聚合物(PVDF)质量分数和添加剂(Li Cl/PVP)组成对废水处理用PVDF基础膜孔结构、孔隙率、COD截留率和水通量的影响。由综合评分法分析可得,用于焦化废水处理的PVDF基础膜的最佳制备条件为15%PVDF/2.4%PVP/1.6%Li Cl。在该条件下所制备的PVDF基础膜既能有效降低焦化二次沉淀池出水COD,又能保证较高的水通量,其COD截留率为77.3%,纯水通量为383.75 L/m2·h。The PDVP membrane is prepared by immersion precipitation phase inversion method. The effects of PVDF content and additive （LiC1/PVP） composition on the structure, porosity and COD rejection rate of the PVDF membrane for coking waste water treatment are studied. The optimal preparation condition for PVDF membrane is 15% PVDF/2.4% PVP/1.6% LiC1. The PVDP membrane obtained under this condition can both reduce the content of COD in secondary sedimentation tank obviously and have high water flux. The pure water flux is 383.75 L/mz h and the COD rejection rate is 77.3%.

关 键 词：膜处理技术 膜结构 焦化废水 COD含量 

分 类 号：TQ319[化学工程—高聚物工业]