Concept

Gestion des boues de vidange

Publications associées (86)

Modelling 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 Association2014

Towards 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 Verona2014

Nitrogen Removal over Nitrite by Aeration Control in Aerobic Granular Sludge Sequencing Batch Reactors

Christof Holliger, Julien Maillard, Samuel Lochmatter

This study investigated the potential of aeration control for the achievement of N-removal over nitrite with aerobic granular sludge in sequencing batch reactors. N-removal over nitrite requires less COD, which is particularly interesting if COD is the lim ...

Mdpi Ag2014

Bacterial selection for nutrient removal in aerobic granular sludge wastewater treatment systems

Christof Holliger, David Gregory Weissbrodt

The mechanism of bacterial selection was investigated in aerobic granular sludge wastewater treatment systems (i) to determine why biological nutrient removal (BNR) gets deteriorated during granulation start-up under wash-out dynamics, and (ii) to identify ...

2013

Microbial diversity differences within aerobic granular sludge and activated sludge flocs

In this study, we investigated during 400 days the microbial community variations as observed from 16S DNA gene DGGE banding patterns from an aerobic granular sludge pilot plant as well as the from a full-scale activated sludge treatment plant in Epe, the ...

Springer2013

Identification of trigger factors selecting for polyphosphate- and glycogen-accumulating organisms in aerobic granular sludge sequencing batch reactors

Christof Holliger, David Gregory Weissbrodt

Nutrient removal performances of sequencing batch reactors using granular sludge for intensified biological wastewater treatment rely on optimal underlying microbial selection. Trigger factors of bacterial selection and nutrient removal were investigated i ...

Elsevier2013

Application of the analytic hierarchy process to the analysis of wastewater nutrient recycling options: a case based on a group study of residents in the city of Zurich

Claudia Rebeca Binder Signer

The recycling of anthropogenic nutrients derived from the wastewater management systems is often characterized by a complex and uncertain scenario, due not only to the nature of the process but also to the involvement of different stakeholder groups. Over ...

2013

Bacterial resource management for nutrient removal in aerobic granular sludge

David Gregory Weissbrodt

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 ...

2013

Rainfall mediations in the spreading of epidemic cholera

Andrea Rinaldo, Enrico Bertuzzo, Lorenzo Mari, Lorenzo Righetto, Marino Gatto

Following the empirical evidence of a clear correlation between rainfall events and cholera resurgence that was observed in particular during the recent outbreak in Haiti, a spatially explicit model of epidemic cholera is re-examined. Specifically, we test ...

Elsevier Sci Ltd2013

Bacterial Resource Management for Nutrient Removal in Aerobic Granular Sludge Wastewater Treatment Systems

David Gregory Weissbrodt

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 ...

EPFL2013

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