Adsorbent media such as activated alumina could be an option. Straight AA will be most effective at removing the selenite species and less effective for selenate and others.
If you choose RO or other method that concentrates the selenium, you will want to check the selenium concentration to...
Precipitation technologies may be limited in their ability to reach discharge limits that are less than 20 ppt. Adsorbent technologies like resins, carbon, and other engineered materials may be able to reach those low ppt levels. One such engineered material is manufactured by MAR...
