Philip, Are you looking at ...
Published by Jim Gott, Employee at Aquadron
Philip,
Are you looking at water treatment for potable use or waste water treatment / stripping specific elements out of water?
A few years ago I was involved in a project where we were stripping metals (cadmium and zinc) from groundwater using a peat sorption bed followed by a reed bed, we achieved a 99%+ removal rate and it took about three years for the bed to get loaded and need replacement (we had the water percolate through the peat bed that was about 5m long).
There are lots of references on the use of this kind of approach for groundwater remediation, so if you are after performance characteristics I would start there.
Regards
Jim