Selenate Removal from Waste Water, US Patents 5,271,831 and 5,009,786

Selenate Removal from Waste Water Patent Drawing, US Patent 5,271,831.
February 22, 2019

A method and apparatus for removing selenate from waste water through the use of selenate respiring microorganisms under substantially anoxic conditions is described. The method includes a first zone for removing nitrate by assimilation into biomass.  (Full details available at the U.S. Patent and Trademark Office website for patents 5,271,831 and 5,009,786.)