Article | September 4, 2013

Taking The Guesswork Out Of RO System Design


By Kevin Westerling,

Reverse Osmosis

By Steve Alt, Jim Lozier, and Tyler Nading, CH2M HILL

Engineers at CH2M HILL have developed a tool to evaluate energy-recovery devices (ERDs), enabling wise decision-making and lower-cost reverse osmosis (RO) desalination.

Did you know energy consumption accounts for the largest part of a desalination plant’s total operating costs? As a result, desalination plants look to energy-recovery devices (ERDs) to cut back on operating costs by reusing energy from the reverse osmosis (RO) process. 

However, with numerous ERDs available on the commercial market, such as energy- recovering turbines or pressure exchanging technologies, it can be a time-consuming and tedious process to determine which, if any, ERD is best suited to meet the needs of an existing or new plant.