PHOSPHORUS REMOVAL IN FLUIDIZED-BED BIOLOGICAL REACTOR (FBBR)

Citation
M. Rovatti et al., PHOSPHORUS REMOVAL IN FLUIDIZED-BED BIOLOGICAL REACTOR (FBBR), Water research, 29(12), 1995, pp. 2627-2634
Citations number
23
Categorie Soggetti
Engineering, Civil","Environmental Sciences","Water Resources
Journal title
ISSN journal
00431354
Volume
29
Issue
12
Year of publication
1995
Pages
2627 - 2634
Database
ISI
SICI code
0043-1354(1995)29:12<2627:PRIFBR>2.0.ZU;2-Z
Abstract
The biological phosphorus removal in fluidized bed biological reactor (FBBR) has been investigated. The feasibility of excess phosphorus upt ake, assured by exposition of biomass to anaerobic-aerobic conditions, has been demonstrated on a bench-scale biofilm reactor working as seq uencing batch reactor (SBR) and the limiting parameters have been esta blished. Although the reactor worked effectively, it took several week s for both acclimatization of biomass and selection of a biofilm rich in poly-P-bacteria. The highest phosphate uptake rates have been obser ved when strict anaerobic conditions were reached during the anaerobic phase. Using a fluidized bed, a thin biofilm, characterized by high s urface/volume ratio and hence highly disposed towards substrate uptake , has been obtained and the overall phosphorus abatement, referred to the biomass present in the reactor, proved particularly effective.