title: Effect of a static magnetic field on activated sludge community.
abstract: The aim of this study was to determine the effect of a static magnetic field (SMF) on the composition of activated sludge biocenosis. The experiment was carried out in two parallel bench scale Sequencing Batch Reactors (SBRs). Both SBRs were treated with dairy wastewater. The activated sludge in the first SBR was exposed to an SMF via the induction of a 0.6 T magnetic field generated by four magnetic liquid activators. The second reactor (control reactor) was operated at the same operational parameters but the activated sludge was not exposed to the SMF. The mean length of the bacterium Eikelboom Type 0092 was lower in the SMF-exposed reactor than in the control reactor. Different activated sludge morphologies in SBRs were reflected in the values of the sludge volume index and sludge biotic index calculated on the basis of the microfauna composition.
authors.affiliation: a Department of Tourism, Recreation and Ecology , University of Warmia and Mazury in Olsztyn , Olsztyn , Poland.
authors.forename: Adam
authors.identifier: http://orcid.org/0000-0002-2039-4364
authors.initials: A
authors.lastname: Drzewicki
authors.affiliation: b Department of Environment Engineering , University of Warmia and Mazury in Olsztyn , Olsztyn , Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Dębowski
authors.affiliation: b Department of Environment Engineering , University of Warmia and Mazury in Olsztyn , Olsztyn , Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Zieliński
mesh_terms: D019149:Bioreactors; D060526:Magnetic Fields; D012722:Sewage; D014865:Waste Disposal, Fluid; D062065:Wastewater
chemical_list: D012722:Sewage; D062065:Wastewater
keywords: Activated sludge; filamentous bacteria; microfauna; sludge biotic index (SBI); static magnetic field