Two-phase anaerobic technology for domestic wastewater treatment at ambient temperature

Anaerobic process phase separation was implemented in the present investigation, using two kinds of suspended anaerobic biomass - floccules and granules, respectively. Both phases of the process were proved to follow the classic Monod kinetics, the reported parameters of which indicate extremely high activity of the anaerobic biomass. This was achieved by providing appropriate hydrodynamic conditions in the bioreactors and creation of granulated (pelletized) biomass in the second one. The reasons and circumstances leading to these results are discussed, as well as the appropriate bioreactor construction schemes and the possibilities for implementation of the reported technology in practice and in coastal areas in particular. (C) 1999 Published by Elsevier Science Ltd on behalf of the IAWQ. All rights reserved.