We offer an ion exchange based technology combined with electrochemical reduction of selenate to selenium to remove selenium from wastewater. The technology reduces selenium concentrations down to as low as 1 ppb using resins placed in columns. Operating in carousel mode, the columns treat feed solution and regenerate resin to provide continuous treatment. A small volume of spent regenerant solution is directed to a selenium electrochemical reduction step where iron is added to form an iron-selenium solid. The selenium free solution is recycled back to the ion exchange circuit, eliminating waste liquid brine.
Selen-IX™ does not require the feed water to be heated, is highly adaptable to fluctuations in selenium concentrations, greatly reduces the volume of waste by-product and stabilizes selenium into an inorganic iron-selenium solid product. Selen-IX™ units are compact modules with a small footprint and can be easily deployed in remote locations to treat multiple discharge points