ON-LINE PERFORMANCE MANAGEMENT OF MEMBRANE SEPARATION PROCESS

摘要

Method for on-line prediction of performance of RO based desalination plant is developed. The method consists of (i) a mathematical model of the RO unit (ii) online estimation of membrane physical parameters of the nonlinear mathematical model representing the RO unit. (iii) Analysis of the estimated membrane transport parameter with respect to time. (iii) Based on the analysis of these estimated parameters, plant operators can clean the membranes to restore the performance of the RO desalination plant. The method is implemented in a computer based control system used for data acquisition and control of RO based desalination plant. The method helps in maintaining the performance of the RO based desalination plants at desired level and increase the membrane life with out affecting quality of permeate water produced.