White Rose University Consortium logo
University of Leeds logo University of Sheffield logo York University logo

Application of microbial indices to assess the performance of an SBR and MBR treating municipal wastewater

Horan, NJ, Monsalvo, VM and Shanmugam, P (2012) Application of microbial indices to assess the performance of an SBR and MBR treating municipal wastewater. Environmental Technology. ISSN 0959-3330 (In Press)

Full text available as:

Abstract

Microbial indexes of filamentous bacterial density were evaluated for their potential to act as indicators of sludge settling characteristics for SBR and MBR treatment options. These options were operated using settled sewage over a range of aerated loading rates from 0.05 to 0.4/d and the evolution of protozoan and metazoan populations analysed. A filament density score ranging between 0 and 5 that has previously been applied to conventional activated sludge processes, was shown also to be a useful tool for SBR and MBR, and was correlated to the settleability of the mixed liquor from both reactors. Due to the hydrodynamics of both systems and the subsequent differences in mixed liquors, optimum performance for each bioreactor was obtained under different operating conditions. Although there was no correlation between the numbers of any given protozoan species and plant operating conditions, there was a clear dependence between operating conditions and protozoan diversity. The highest diversity was found when operating conditions were optimum for both the SBR and MBR.

Item Type: Article
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
Depositing User: Symplectic Publications
Date Deposited: 08 Mar 2012 10:46
Last Modified: 08 Feb 2013 17:37
Published Version: http://dx.doi.org/10.1080/09593330.2012.660652
Status: In Press
Publisher: Taylor & Francis
Identification Number: 10.1080/09593330.2012.660652
URI: http://eprints.whiterose.ac.uk/id/eprint/43756

Actions (repository staff only: login required)