ABSTRACT
The reduction reactions carried out by microbes in the biofilms of anaerobic bioreactors require a source of carbon and this is supplied by organic active media material. Passive treatment anaerobic bioreactors may also have relatively thin layers of separator and bedding materials such as sand, and have covering layers of water or are covered over with soil, clay, gravel and/or geomembranes to ensure anaerobic conditions in them. In aqueous environments, the organic nitrogen compounds can be mineralized by facultative bacteria to ammonia, both aerobically and anaerobically. Successive alkalinity producing systems (SAPS) Bioreactors are intended to neutralize Acid Rock Drainage while inhibiting ferric oxyhydroxide formation. Alternative names for Denitrification bioreactors are denitrifying bioreactors, denitrification beds, denitrification biofilters, tile drain biofilters and woodchip bioreactors. The Engineered Wetlands Test Project involved a pilot-scale Eco-Engineered Bioreactors System consisting of a SAPS Bioreactor test cell and a Biochemical Reactor cell in series.
