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3 管式复合膜的Zeta电位

Table 3 Zeta potential of tubular composite membrane

pH Zeta电位/mV PA纳滤膜 1.0 MPa测试后的纳滤膜 9.99 -25.39 -25.99 9.15 -20.34 -20.34 7.89 -19.36 -19.66 6.75 -18.97 -19.53 5.98 -18.86 -19.36 5.14 -18.55 -18.63 4.24 -15.38 -15.75 3.27 -8.87 -8.92 2.52 0.00 0.00 2.31 2.46 2.31