Premium
Influence of velocity distribution in the multiphase flow on the building of aerobic granules in a Sequencing Batch Reactor (SBR)
Author(s) -
Zima Bogumila Ewelina,
Kowalczyk Wojciech,
Hartmann Christoph,
Delgado Antonio
Publication year - 2005
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200510278
Subject(s) - bioreactor , particle image velocimetry , particle tracking velocimetry , sequencing batch reactor , multiphase flow , particle (ecology) , velocimetry , superficial velocity , phase (matter) , flow (mathematics) , materials science , tracking (education) , flow velocity , mechanics , chemistry , physics , waste management , engineering , geology , oceanography , organic chemistry , effluent , turbulence , psychology , pedagogy
In present contribution a study is presented, where fluid dynamic measurements are used to observe multiphase flow pattern in a bioreactor. It can be shown that hydrodynamic effects have a major influence on the formation, shape and size of Granular Activated Sludge (GAS) in a Sequencing Batch Reactor (SBR) under aerobic condition. In order to analyse multiphase flow pattern (water, air, granules) in the bioreactor in‐situ techniques with optical measurements are applied. LASER IIIB and video lamp are used as a light source. Due to a transient spatial velocity distribution in the bioreactor our experiments are carried out in different levels of SBR. Tracer particles are employed to visualise the fluid flow pattern. Velocity field of the liquid phase in the bioreactor is determined by use of PIV method (Particle Image Velocimetry). PTV (Particle Tracking Velocimetry) is implemented to observe velocity field of individual granules (solid phase). (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)