Process Control Strategies for the SAWS Brackish Groundwater Desalination Project’s Enhanced Recovery RO Treatment Process

This paper will provide insight into challenges faced in the RO process design of large capacity in-land desalination facilities, San Antonio Water Systems ( SAWS) . Specifically the paper will discuss unique treatment process optimizations that were made in response to capacity constraints in the concentrate disposal 2 facilities. Control strategies for the 3-stage RO treatment process that utilizes a separate 3rd stage array were be discussed and compared to conventional 3-stage RO designs.