将超声波用于强化电解质溶液在纳滤膜内的传质过程,研究超声作用下NaCl和MgSO4溶液在聚酰胺纳滤膜内的传质机理,考察超声作用对膜通量、截留率和跨膜电位随跨膜压差变化规律的影响。实验结果表明,与无超声作用相比,施加在膜表面的超声作用增大了膜通量,降低了截留率,提高了跨膜电位。 The ultrasonic wave was used to enhance the mass transfer process of electrolyte solution in nanofiltration membrane. The mechanism of mass transfer of NaCl and MgSO4 solution in polyamide nanofiltration membrane under ultrasound was studied. The effects of ultrasound on membrane flux, retention and transmembrane Influence of Potential on Variation of Transmembrane Pressure Difference. The experimental results show that compared with no ultrasonic effect, the ultrasonic effect applied on the membrane surface increases the membrane flux, reduces the rejection and increases the transmembrane potential.