Capacitive Deionization (CDI) could be the next generation water treatment energy storage and alternative fuels technology. It’s very clean technology as it uses only electricity for its operation. In the future CDI might find its way into your life for water purifiers, disinfection, medical applications and conversion of algae to oil, to name a few. EWP is a leading brand of CDI developed , manufactured and marketed by Aqua EWP,LLC.