摘要
采用相转化法将聚醚砜(PES)和磺化聚砜(SPSf)共混制备纳滤膜,考察了这2种材料的共混比、聚乙烯吡咯烷酮(PVP k30)和氯化锂(LiCl)含量、空气中的挥发时间对膜的脱色和脱盐性能研究及水通量变化情况。结果表明,PES和SPSf有一定的相容性,PVP k30和LiCl含量的变化以及膜片放置在空气中的挥发时间都会对膜性能产生一定的影响。当PES、SPSf的质量比为18/7,PVP k30、LiCl的质量分数分别为5%、1%,且在成膜后在空气中的挥发时间为10 s时,对几种染料的截留效果为好,刚果红、甲基蓝、日落黄的截留率分别高达99.8%、93.5%、57.9%,平均水通量可达324 L/(m^2·h)。
Polyethersulfone(PES)and sulfonated polysulfone(SPSf)were blended by phase transformation to prepare nanofiltration membrane.The blending ratio of two kinds of materials,the content of polyvinylpyrrolidone(PVP k30)and lithium chloride(LiCl),and volatilization time in air were investigated for the decolorization,desalination performance and the change of water flux of the membrane.The results showed that PES and SPSf had certain compatibility,and the changes of the content of PVP k30 and LiCl as well as the volatilization time in air of the membrane would have a certain influence on the membrane performance.When the mass ratio of PES and SPSf was 18/7,mass fraction of PVP k30 and LiCl was 5%and 1%respectively,and the volatilization time in air of the membrane was 10 s,the membrane had the better rejection effect on several dyes,the rejection rates of congo red,methyl blue,and sunset yellow were as high as 99.8%,93.5%,and 57.9%,respectively,and the average water flux could reach 324 L/(m^2·h).
作者
刘文超
刘文苹
洪勇琦
谭惠芬
潘巧明
郭毅
LIU Wenchao;LIU Wenping;HONG Yongqi;TAN Huifen;PAN Qiaoming;GUO Yi(Bluestar(Hangzhou)Membrane Industries Co.,Ltd,Hangzhou 310012,China;Hangzhou Water Treatment Technology Development Center Co.,LID,Hangzhou 310012,China;Production Engineering and Research Institute Daqing Oilfield Co.,Ltd,Daqing 163453,China;Zhejiang University,Hangzhou 310012,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2020年第10期17-20,共4页
Technology of Water Treatment
基金
国家重点研发计划项目(2017YFC0403702)
浙江省海水淡化技术研究重点实验室项目(2012E10001)。
关键词
相转化法
纳滤膜
聚醚砜
磺化聚砜
染料废水
phase transformation
nanofiltration membrane
polyethersulfone
sulfonated polysulfone
dye wastewater
