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Publication
Bacterial community and system performance of an aerobic granular sludge reactor treating pharmaceutical wastewater
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Advisor(s)
Abstract(s)
Pharmaceuticals often reach wastewater treatment systems where low removal rates are observed. In the present study the potential impact of a mixture of such micro-pollutants on an aerobic granular sludge-sequencing batch reactor (AGS-SBR) was investigated using a lab-scale bioreactor. COD and P- removals were affected due to the load of pharmaceuticals resulting in a decrease of the COD uptake and the P-release during the anaerobic feeding phase, but the discharge limits were not exceeded. Nevertheless, both processes returned to its normal operation after resuming the pharmaceuticals feeding. The nitrification process was also affected but the activity of bacteria responsible for both nitrification steps was able to recover. The exposure to the pharmaceuticals induced alterations in the bacterial community structure.
Description
Keywords
Aerobic granular sludge Microbial community
Pedagogical Context
Citation
AMORIM, Catarina L.; MOREIRA, Irina S.; RIBEIRO, Ana R.; TIRITAN, Maria E.; HENRIQUES, Isabel S.; CASTRO, Paula M.L. - Bacterial community and system performance of an aerobic granular sludge reactor treating pharmaceutical wastewater. In 3rd IWA Specialized International Conference Ecotechnologies for Wastewater Treatment 2016 (ecoSTP16) Cambridge, United Kingdom, June 27-30, 2016. – In Cranfield University (Eds.), Proceedings of the 3rd IWA Specialized International Conference "Ecotechnologies for wastewater treatment (ecoSTP16)" (2016) Cambridge, UK, paper # 3304968