Effects of biofilm geometry on deammonification biofilm performance: A simulation study

作者: Sitong Liu , Harald Horn

DOI: 10.1016/J.BIORTECH.2011.12.131

关键词: ChemistryAnammoxNitrogen removalBiomassGeometryMass transferBiofilm

摘要: Abstract Three geometrically different biofilms were investigated for the start-up of deammonification reactor. The planar biofilm with 4 g/L biomass could achieve 0.47 kgN/(m 3  day) nitrogen removal, compared to only and 2 g/L needed cylindrical granular biofilms, respectively. Planar was significantly affected by Dissolved Oxygen (DO) changes, whereas effectively work in a wide range DO. maximum performance 0.49, 0.83 1.27 kgN/(m obtained planar, respectively, reflecting that most capable due its large surface area mass transfer. Cylindrical also effective as denitrifiers growth intimately related anaerobic zone. In addition, DO should be increased abruptly each shortened HRT. This investigation indicates profound influence geometry on process, which might serve input further experimental progress.

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