Case Number 103021 - Biomass Concentrator Reactor
Contact: Doug Nienaber
Description: The EPA’s National Risk Management Research Laboratory (Dr. Albert Venosa) in collaboration with the University of Cincinnati (Dr. Makram Suidan) have developed a gravity-flow Biomass Concentrator
Reactor (BCR) for biological water treatment. The BCR design encompasses an aeration chamber housing a high surface area
porous polyethylene membrane system that retains all of the biomass within the aeration chamber. Its simple operation and
low maintenance requirements may render it economically more feasible than other water
treatment technologies. The water flux
through the membrane relies
completely on gravity with only
1 inch of hydraulic head.
The BCR has been demonstrated to be effective in the
biological treatment of methyl tertiary-butyl ether-contaminated
groundwater or any environment where
high biomass retention is desired or
required for highly efficient bio-degradation to occur. This technology could be used as a package plant
replacement or for small municipal activated sludge systems (no clarifier needed) as well as for treating surface water for drinking
purposes. It produces a highly clear and organic-free effluent, and it reduces natural organic matter sufficiently that trihalomethane precursors would be minimized. It also can be used for industrial
wastewater treatment and possibly for the anaerobic treatment of waters contaminated with perchlorates.
A US Patent has issued covering this technology - 6,821,425 entitled "Biomass concentrator reactor."