See also: http://www.livingmachines.com/htm/home.htm
> Not BD and at a slight tangent but interesting all the same: > http://www.ratical.org/LifeWeb/Articles/rushes.html. > > To quote a little: > "At eighty-two, Dr. Kaethe Seidel, head of the former Limnology > Group of the Max Planck Institute, long nicknamed Bulrush Kate ("Die > Binzen Kaethe"), is a tough-minded, clear-thinking scientist with a > remarkable record of pioneering work in a kind of biological > wastewater treatment that should be far better known and used than > is the case. In the course of a professional career spanning over sixty > years, she has demonstrated the effectiveness of naturally growing > plants in breaking down ballast substances, transposing toxic into non- > toxic substances, destroying pathogenic bacteria, viruses and worm > eggs, removing heavy metals, cleaning oil spills, removing salt, > neutralizing pH, enriching with oxygen, transforming waste water into > drinking water and replenishing groundwater --- all with > photosynthesis as the sole energy source."
