Validation of model-based optimization of brackish water reverse osmosis (BWRO) plant operation

A previously developed model-based optimization methodology is validated in an industrial brackish water reverse osmosis (BWRO) desalination plant in Southern California. A close match between model predictions and plant data in numerous cases indicates that the mathematical model accurately describes the main characteristics involved in typical industrial BWRO processes. It is demonstrated in this desalination plant that a 10% reduction in energy consumption can be achieved while maintaining the same permeate flow rate by adjusting operating conditions as suggested by the model. Furthermore, an opportunity for significant savings in disposal cost is identified due to a reduction in brine volume. This work clearly shows the effectiveness of model-based optimization in RO plant operation.