ABSTRACT
In the last 12 to 13 years, many processes for removal of selenium from agricultural drainage water have been investigated. Hanna et al. (1990) reviewed a number of the physical, chemical, and biological processes that were so examined during the mid-to late 1980s. Applications of physical-chemical methods for selenium removal are limited because the complex nature of drainage water and its high sulfate content result in treatment interferences and/or high costs. Biological methods of selenium removal have shown the most promise and have been researched most extensively.
