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1 不同硫酸钠质量浓度下管式纳滤膜的渗透压

Table 1 Osmotic pressure of tubular nanofiltration membranes at different sodium sulfate mass concentrations

硫酸钠质量浓度/（g·L-1） 渗透压/MPa 管式纳滤膜Ⅰ 管式纳滤膜Ⅱ 管式纳滤膜Ⅲ 9.56 10.09 10.22 0.4 18.79 19.32 19.08 0.6 27.05 27.71 27.38 0.8 28.96 29.58 29.61 1.0 32.97 32.57 32.84 1.2 37.95 35.08 38.40 1.4 40.02 40.14 41.37 1.5