高盐与高压对PVDF/PA管式复合膜分离性能的影响

李士伟,刘恩华,杨利娟,胡苏皓

Effect of high salt and high pressure on the separation performance of PVDF/PA tubular composite membranes

Shiwei LI,Enhua LIU,Lijuan YANG,Suhao HU

表2 不同纳滤膜最高截留率对应的压力

Table 2 Pressure corresponding to the highest retention rate of different nanofiltration membrane

硫酸钠质量浓度/（g·L-1） 压力/ MPa 管式纳滤膜Ⅰ 管式纳滤膜Ⅱ 管式纳滤膜Ⅲ 2 0.8 1.0 1.0 5 0.8 1.2 1.2 10 1.0 1.2 1.2 20 1.2 1.2 1.4 30 1.4 1.4 1.4 70 1.5 1.5 1.5