KWR Annemarie van Wezel by KWR Annemarie van Wezel
10 July 2018

Insights into the variability of microbial community composition and micropollutant degradation in diverse biological wastewater treatment systems

Very nice work to better understand biodegradation of chemicals of emerging concern in waste water treatment plants, it’s dependence on microbial communities and thus ways to optimize degradation...

Insights into the variability of microbial community composition and micropollutant degradation in diverse biological wastewater treatment systems

Publication date: 15 October 2018 Source: Water Research, Volume 143 Author(s): David Wolff, Daniel Krah, Andreas Dötsch, Ann-Kathrin Ghattas, Arne Wick, Thomas A. Ternes Abstract The biological potential of conventional wastewater treatment plants to remove micropollutants mainly depends on process conditions and the predominant microbial community. To explore this dependence and to connect the occurrence of genera with operating conditions, five pilot-scale reactors with different process conditions were combined into two reactor cascades and fed with the effluent of the primary clarifier of a municipal WWTP. All reactors and the WWTP were analyzed for the removal of 33 micropollutants by LC-MS/MS and the presence of the microbial community using 16S rRNA gene sequencing. The overall removal of the micropollutants was slightly improved (ca. 20%) by the reactor cascades in comparison to the WWTP while certain compounds such as diatrizoate, venlafaxine or diclofenac showed an enhanced removal (ca. 70% in one or both cascades). To explore the diverse bacteria in more detail, the general community was divided into a core and a specialized community. Despite their profoundly different operating parameters (especially redox conditions), the different treatments share a core community consisted of 143 genera (9% of the overall community). Furthermore, the alpha- and beta-biodiversity as...

  • ScienceDirect Publication: Water Research
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