Optimizing Osmotically-Assisted Reverse Osmosis Brine Treatment

Osmotically Assisted Reverse Osmosis (OARO) process optimization is presented to reduce feed pressure requirements in brine desalination by introducing saline sweep water on the permeate side, decoupling feed pressure from concentrate osmotic pressure. Appropriate membrane selection and process configuration design enable OARO systems to achieve maximum brine concentration with minimized energy consumption. Practical design considerations and performance data support OARO as a scalable approach to treating high-salinity streams in water reuse, desalination, and zero liquid discharge applications.