We offer a process that combines ion exchange and electrochemical reduction to selectively remove selenium from mining wastewater down to single-digit ppb levels.
This process concentrates the selenium into a small volume of brine solution that is treated with electrochemical cells to precipitate the selenium as a stable iron-selenium solid. After the solids are separated from the liquid, the brine solution is recycled back to the ion exchange circuit, eliminating waste liquid brine. XRD and TCLP analysis have verified the solids to be non-toxic.
Selen-IX™ units are compact modules with a small footprint and can be easily deployed in remote locations to treat multiple discharge points.