Publications et rapports d'activité

Title

Publications

JOB BD

JOB CP

Performance of secondary wastewater treatment methods for the removal of contaminants of emerging concern implicated in crop uptake and antibiotic resistance spread

Science of the Total Environment – 2019

Contaminants of emerging concern (CEC) discharged in effluents of wastewater treatment plants (WWTPs), not specifically designed for their removal, pose serious hazards to human health and ecosystems. Their impact is of particular relevance to wastewater disposal and re-use in agricultural settings due to CEC uptake and accumulation in food crops and consequent diffusion into the food-chain. This is the reason why the chemical CEC discussed in this review have been selected considering, besides recalcitrance, frequency of detection and entity of potential hazards, their relevance for crop uptake.

Keywords: Secondary wastewater treatment, Biological processes, CEC removal, Antibiotic resistance, EU watch list.
Mots clés : Traitement secondaire des eaux usées, Procédés biologiques, Elimination de nouveaux contaminants inquiétants, Résistance aux antibiotiques, Liste EU de vigilance.

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An integrative review of granular sludge for the biological removal of nutrients and recalcitrant organic matter from wastewater

Chemical Engineering Journal  – 2018

Granular sludge aggregates are particular types of biofilms that display significantly different metrics and physical-chemical characteristics than activated sludge flocs. The efficiency of intensified processes using granular sludge relies on the application of selection pressures. Operational conditions are engineered to force microorganisms to form specific intrinsic physiological, phenotypic, and metabolic traits for granulation and high-rate biological removal of nutrients and/or recalcitrant organic matter. 

Keywords: Biological nutrient removal, Recalcitrant organic matter, Granular sludge processes, Fundamental aspects, Engineering concepts.
Mots clés : Elimination biologique des nutriments, Matière organique réfractaire, Procédés à boues granulaires, Aspects fondamentaux, Concept d’ingénierie.
 

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MEDIX® : un traitement entièrement biologique pour les eaux usées d’hôpitaux

96ème Congrès de l’ASTEE – “Des territoires à l’Europe: Construire ensemble les transitions environnementales – 2017

Keywords: Microbial management, SBR, Activated Sludge, Densification, Phosphorus removal, EPBR.
Keywords: Micropollutant removal, Pharmaceutical products, Enzymes.
Mot clés : Station de traitement des micropolluants, résidus pharmaceutiques, Enzymes.
 

Filamentous bulking caused by Thiothrix species is efficiently controlled in full-scale wastewater treatment plants by implementing a sludge densification strategy

Scientific report – Nature  – 2017

Filamentous bulking is a major cause of activated sludge process deficiency. It arises from an overgrowth of filamentous organisms and induces important losses of biomass that considerably reduce the removal efficiency of suspended solids. Modification of the reactor cycle based on the implementation of an original periodic starvation proved efficient to solve the biomass wash-out and drastically reduce the sludge volume index in both reactors. Bacterial diversity analysis using 16S amplicon sequencing and quantitative PCR indicated a reduction of Thiothrix abundance from 51.9 to 1.0% in SBR1 and from 71.8 to 0.6% in SBR2. 

Keywords: SBR, qPCR, Bacterial diversity, Optimization of microbial processes.
Mots clés : SBR, qPCR, Diversité bactérienne, Optimisation des procédés biologiques.
 

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Improved performances and reduced energy consumption at an industrial wastewater treatment plant in response to a strategy of filamentous bulking control

96ème Congrès de l’ASTEE – “Des territoires à l’Europe: Construire ensemble les transitions environnementales – 2017

Keywords: Microbial management, SBR, Activated Sludge, Densification, Phosphorus removal, EPBR.
Mots clés : Ecologie microbienne, SBR, Boue activée, densification, élimination du phosphore.
 

Investigation of the impact of wood ashes on nitrifying granule formation

14th IWA Leading Edge Conference on Water and Wastewater Technologies – 2017

The aim of this research is to evaluate the impact of the use of wood ashes as biomass carriers on nitrifying granule formation and substrate removal efficiency. Microbial population shifts during the formation of granules were also investigated. 

Keywords: Microbial products, Nitrification, Bioaugmentation, Circular economy 
Mots clés : Produits biologiques, Nitrification, Bioaugmentation, Economie circulaire
 

A novel biofilm platform for the selection and enrichment of specialized bacteria

4th Meeting of the Belgian Interdisciplinary Biofilm Research – 2016

Keywords: Compound removal, Odor control, System start-up, Bacteria.
Mots clés : Stabilisation, Contrôle des odeurs, boost en start-up, Bactérie.
 

Improving phosphorus removal in aerobic granular sludge processes through selective microbial management

Bioresource Technology – 2016

This study aimed to improve phosphorus removal in aerobic granular sludge sequential batch reactors (AGS-SBR) by a differential selection of the granules containing the highest proportion of phosphate accumulating organisms (PAOs).

Keywords: Aerobic granular sludge, Wastewater treatment, High-throughput sequencing, Bacterial diversity, Microbial management, Phosphorus removal.
Mots clés : Boue aérobie granulaire, Traitement des eaux usées, Séquençage haut débit, Diversité bactérienne, Gestion des ressources microbiennes, Elimination biologique du phosphore
 

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Influence of feeding pattern and hydraulic selection pressure to control filamentous bulking in biological treatment of dairy wastewaters

Bioresource Technology – 2016

In sequencing batch reactors (SBRs) treating dairy wastewaters, the overgrowth of filamentous bacteria is a frequent cause of operational problems. The present study aimed at understanding to what extent the operating conditions of a SBR can be optimized to convert a bulking activated sludge into a well-settling biomass at low aeration velocity.

Keywords: Aerobic granule, Bulking sludge, Dairy wastewater, Filamentous bacteria, Long-term stability, SBR.
Mots clés : Boue granulaire, Foisonnement filamenteux, Laiterie, Filaments, Résilience, SBR
 

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The hybrid anaerobic baffled reactor: an appropriate technology for wastewater treatment

14th IWA World Conference on Anaerobic Digestion – 2014

The focus of this research is to develop a simple, robust and low cost wastewater treatment technology specifically designed to treat liquid effluents from agro-food SMEs. The technological scheme is based on a modified anaerobic baffled reactor. 

Keywords: Anaerobic digestion, ABR, wastewater, SMEs.
Mots clés : Digestion anaérobie, réacteurs à chicanes, eau usée, PME.
 

Development of aerobic granular sludge

1st Meeting of the Belgian Interdisciplinary Biofilm Research – 2013

Keywords: SBR, Aerobic Granular Sludge.
Mots clés : SBR, Boue granulaire.
 

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