Closed Circuit Desalination Simplifies Reverse Osmosis To Drive Down Energy Costs

As industry, agriculture and residential consumers compete for available freshwater sources, desalination continues to evolve as a viable process for increasing the available water pool. Industrial water is perhaps most critical as it accounts for as much as sixty percent of the freshwater being withdrawn in the United States today. Rising wastewater disposal costs, sustainability initiatives, and higher water efficiency standards are all fueling interest from industry in onsite brackish water reuse. However, municipal interest in water-stressed areas of the world is also on the rise.

In this Water Online Radio interview, Nadav Efraty, CEO of Desalitech, explains how a new desalination process called Closed Circuit Desalination (CCD) simplifies the traditional reverse osmosis process. As Efraty explains, traditional reverse osmosis needs a high cross-flow to constantly wash the salts away from the face of the membranes.  Closed Circuit Desalination is more like an ultra-filtration application where strong internal recirculation is used as the water is concentrated up and then periodically purged.

Efraty suggests some of the benefits of CCD include almost unlimited recovery, lower pressure requirements and not being subject to the chemical limitations of traditional reverse osmosis. 

Learn more about the potential of Closed Circuit Desalination by clicking on the Radio player below.