Key factors affecting water permeate velocity in reverse osmosis based on concentration polarization model

摘要

The accumulation of salts on the high-pressure side of the reverse osmosis membrane surface is attributed to concentration polarization. The efficiency of the reverse osmosis process is significantly affected due to concentration polarization. Because the value of salt concentration exceeds the bulk salt concentration at the membrane surface resulting in a salt boundary layer at the surface of the membrane. In this research, a parametric analysis was performed using the developed concentration polarization model to present qualitative and quantitative evaluations of the influence of different parameters on the overall process performance concerning membrane permeate flux. The objective of this sub-task is to illustrate the effects of physical and operating parameters on permeate velocity, wall concentration, concentration polarization factor and boundary layer thickness.