Journal de la science et de la technologie des membranes

Abstrait

Chemical and Hydrodynamic Modelling of a Reverse Osmosis Desalination System Using Pseudo Bond Graph Approach

Abderrahmene Sellami, Zied ben Hamed, Dhia Mzoughi and Abdelkader Mami

The reverse osmosis desalination system is defined by mutual interaction between several phenomena from different natures. Therefore, such modelling requires a unified approach to have the possibility to correlate the different dynamic situation in our system. We performed experiments at three concentrations (10 mg/ml, 15 mg/ml and 18 mg/ml). Permeate conductivity, retentate conductivity, permeate concentration, retentate concentration, salt permeate concentration, and salt retentate concentration were extracted according to the values of the pressure. This paper presents a bond graph model of a reverse osmosis desalination system taking account of hydraulic and chemical phenomena. The construction procedure was based on the law that the optimized model can be generalized to any reverse osmosis desalination system with simple parameter variation. Simulation results and experimental data are also compared and discussed. This article aims to present the reliability and efficiency of the model bond graph to simulate this kind of industrial systems that brings together the hydraulic and chemical aspects at the same time. People would like to establish that, unlike some of the other functions choosing to ignore the chemical aspect is not suitable because of its significance in the desalination system.