bioreactors that successfully remove Selenium content in tile drain water.is an environmnetal engineering (or science) domain. If you are looking for management practices, why not look for Lean thinking? 

It is first important to understand that plants have the capability for accumulation of nutrients, whether they eventually get "killed" by the same nutrients they accumulate. However, a quick one is this; you may just try a hands-on experiment at the back of the house. Fill in a bowl with samples of the polluted water and then float quite a number of local aquatic species (this is usually called "phytoscreening") . observe their growth in a month or more. some notable parameters to aid in selecting the best plant for a bioreactor as Priyavrat Thareja earlier mentioned, would be luxuriant growth as well as hyperaccumulation in the plant biomass. the plant that does this wins. A good example is with the floater, "water hyacinth". Some submergent species of the genus Cyperus or any sedge might be helpful. they are generally "tough". I hope this helps. Just trying to be as simple and practicable as possible. 

@ Dr. Priyavrat: Thanks for your answer. Actually I mentioned management practice is meant agronomic practices or agricultural technology. Of course, bioreactors are engineering design, we could be considered as one of the drainage water and nutrient management practices.

 Here is the document reviewed the various so called management practices for drainage water management.

 @Beckley: Thanks for your answer. Based on the way you mentioned, we could construct field scale wetlands with mentioned plants which are capable to accumulate Se, right?

Building a bioreactor with saccharomyces cerevisiae may be a more practical option, depending on how concentrated the excess selenium is.