Community dynamics of denitrifying bacteria in full-scale wastewater treatment plants

Effective and stable nitrogen removal from wastewater requires abundant and active denitrifying populations. In this study, a one-year investigation of the population dynamics of phylogenetic groups known to harbor nitrate reducers was conducted in three municipal wastewater treatment plants (WWTPs)...

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Veröffentlicht in:Environmental technology. - 1993. - 37(2016), 18 vom: 02. Sept., Seite 2358-67
1. Verfasser: Zielińska, Magdalena (VerfasserIn)
Weitere Verfasser: Rusanowska, Paulina, Jarząbek, Joanna, Nielsen, Jeppe Lund
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article Full-scale WWTP activated sludge denitrification denitrifiers Sewage Waste Water
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520 |a Effective and stable nitrogen removal from wastewater requires abundant and active denitrifying populations. In this study, a one-year investigation of the population dynamics of phylogenetic groups known to harbor nitrate reducers was conducted in three municipal wastewater treatment plants (WWTPs). The bacterial community composition was determined by amplicon sequencing of the 16S rRNA gene, and putative nitrate reducers were identified by sequencing narG and napA genes. Fluorescence in situ hybridization with oligonucleotide probes targeting known nitrate reducers in wastewater revealed that certain bacteria predominated in the WWTPs: Curvibacter-related bacteria, Comamonadaceae, Azoarcus, Thauera, Dechloromonas, and Candidatus Accumulibacter within Rhodocyclaceae. The data showed high diversity in the nitrate-reducing community and a large degree of redundancy, with a relatively stable core group of bacteria in each plant that ensured small yearly variation in nitrate reduction rates 
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