Person
David Gregory Weissbrodt
This person is no longer with EPFL
Related publications (28)
Modeling Hydraulic Transport and Anaerobic Uptake by PAOs and GAOs During Wastewater Feeding in EBPR Granular Sludge Reactors
Christof Holliger, David Gregory Weissbrodt
New-generation bioprocesses using granular sludge aim for a high-rate removal of nutrients from wastewater with low footprint. Achieving enhanced biological phosphorus removal (EBPR) relies on the design of sludge beds and wastewater feeding conditions to ...
Wiley-Blackwell2017Multilevel Correlations in the Biological Phosphorus Removal Process: from Bacterial Enrichment to Conductivity-Based Metabolic Batch Tests and Polyphosphatase Assays
Christof Holliger, Julien Maillard, Alessandro Brovelli, David Gregory Weissbrodt, Alexandre Chabrelie, Jonathan May
Enhanced biological phosphorus removal (EBPR) from wastewater relies on the preferential selection of active polyphosphate-accumulating organisms (PAO) in the underlying bacterial community continuum. Efficient management of the bacterial resource requires ...
Wiley-Blackwell2014Towards Management of the Bacterial Resource for Nutrient Removal in Granular Sludge Biofilm Systems
Christof Holliger, David Gregory Weissbrodt
The granular sludge biofilm sequencing batch reactor technology can become a next generation standard for high-rate biological nutrient removal from wastewater. This attractive process innovation based on mobile granular biofilms formed by self-aggregation ...
University of Verona2014Linking bacterial population dynamics and nutrient removal in the granular sludge biofilm ecosystem engineered for wastewater treatment
Christof Holliger, David Gregory Weissbrodt, Noam Shani
Intensive nutrient removal from wastewater in anaerobic–aerobic systems using granular sludge should rely on optimal balances at biofilm and microbial ecology levels. This study targets the impacts of reactor characteristics and fluctuations in operation c ...
Blackwell Publishing Ltd, Oxford2014Modelling bacterial selection during the plug-flow feeding phase of aerobic granular sludge biofilm reactors
Christof Holliger, David Gregory Weissbrodt
A mathematical model was developed to investigate hydraulic transport and bacterial selection during slow up-flow anaerobic feeding (0.9 m h-1) of wastewater across the settled bed of granular sludge biofilms used in column-type sequencing-batch reactors t ...
International Water Association2014Linking microbial population dynamics and nutrient removal during wastewater treatment by aerobic granular sludge
Christof Holliger, David Gregory Weissbrodt, Noam Shani
Aerobic granular sludge technology is attractive for intensified biological nutrient removal from wastewater and secondary clarification in single sequencing batch reactors. A methodology combining molecular fingerprinting, pyrosequencing-based identificat ...
2014The biofilm granulation mechanisms depend on the predominant bacterial populations involved
Christof Holliger, David Gregory Weissbrodt
Introduction Aerobic granular sludge used for intensified biological wastewater treatment is based on fast-settling mobile biofilms with a gel-like consistence, called “granules”, formed from activated sludge flocs (Seviour et al. 2012). Fundamental aspect ...
University of Vienna2014Bacterial Resource Management for Nutrient Removal in Aerobic Granular Sludge Wastewater Treatment Systems
The approach of wastewater treatment has shifted towards a holistic view in order to achieve sustainability in addition to environmental protection. The aerobic granular sludge (AGS) technology, which relies on the use of fast-settling granular biofilms ca ...
EPFL2013Bacterial resource management for nutrient removal in aerobic granular sludge
A holistic approach was developed towards efficient bacterial resource management for nutrient removal from wastewater in aerobic granular sludge sequencing batch reactors. Multiple reactor experiments from granulation start-up to operation at steady-state ...
2013Assessment of bacterial and structural dynamics in aerobic granular sludge biofilms
Christof Holliger, Yoan Rappaz, David Gregory Weissbrodt
Aerobic granular sludge (AGS) is based on self-granulated flocs forming mobile biofilms with a gel-like consistence. Bacterial and structural dynamics from flocs to granules were followed in anaerobic-aerobic sequencing batch reactors (SBR) fed with synthe ...
Frontiers Research Foundation2013