A5081798284- Wastewater Treatment and Nitrogen Removal
- Microbial Fuel Cells and Bioremediation
- Microbial Community Ecology and Physiology
- Anaerobic Digestion and Biogas Production
- Phosphorus and nutrient management
- Soil and Water Nutrient Dynamics
- Constructed Wetlands for Wastewater Treatment
- Membrane-based Ion Separation Techniques
- Pancreatic and Hepatic Oncology Research
- Bacterial biofilms and quorum sensing
- Environmental DNA in Biodiversity Studies
- Membrane Separation Technologies
University of Antwerp
2022-2025
About one third of the industrial activated sludge (AS) plants worldwide suffer from bad settling sludge, often caused by filamentous bulking phenomena. The present study investigated effectiveness a granulation/densification strategy, based only on metabolic selection mechanism, to eliminate in sequencing batch reactor (SBR) treating real wastewater. wastewater originated tank truck cleaning company transporting chocolate and beer. proposed strategy involved introduction slow...
ABSTRACT Species belonging to the genus Leptothrix are widely distributed in environment and activated sludge (AS) wastewater treatment plants (WWTPs). They commonly found iron-rich environments reported cause filamentous bulking WWTPs. In this study, diversity, distribution, metabolic potential of most prevalent spp. AS worldwide were studied. Our 16S rRNA amplicon survey showed that belongs general core community worldwide, comprising 32 species with four being found. Their taxonomic...
Abstract This study quantifies the hydraulic performance of a pilot-scale ultrafiltration system integrated into full-scale industrial aerobic granular sludge (AGS) plant. The treatment plant consisted parallel AGS reactors, Bio1 and Bio2, with similar initial properties. During 3-month filtration test, chemical oxygen demand (COD) overloading episode took place, affecting settling properties, morphology, microbial community composition in both reactors. impact on Bio2 was more severe than...
Abstract The goal of this study was to unravel the impact high and low temperatures (T) on glycogen-accumulating microorganisms (GAOs) which were stimulated in an aerobic granular sludge plant fed with industrial wastewater, is derived from cleaning trucks transporting chocolate beer. Among GAOs, Candidatus Competibacter (Ca. Competibacter) most abundant. long-term (1) anaerobic dissolved organic carbon (DOC) uptake, (2) morphology, (3) microbial community composition investigated. In...
Abstract For a successful granulation process in activated sludge systems, the stimulation of slow growing organisms such as glycogen accumulating microorganisms (GAOs) is key factor. Here we show that introduction an anaerobic feast followed by aerobic famine phase successfully transforms bulking sludge, caused abundance genus Kouleothrix, to hybrid floccular-granular sludge. Two sequencing batch reactors (SBRs) were operated for 228 days treating same industrial wastewater derived from...
Laboratory experiments were carried out to investigate the impact of sulfide and thiosulfate on aerobic sludge granulation performance enhanced biological phosphorus removal (EBPR). The experimental results demonstrate that thiosulfate-fed (140 mgS/L) granules could be formed with significant presence Thiothrix filament (15% read abundance), while sulfide-fed (20 system resulted in densified but no granules. Stable EBPR was observed both systems, Â max anaerobic P-release 102.1 100.2...
Abstract Sludge bulking is a common challenge in industrial biological wastewater treatment. Leading to difficulties such as bad sludge settling and washout, which problem also encountered the petrochemical industry. Anaerobic feeding strategies can be used induce growth of storage-capable organisms, glycogen-accumulating organisms (GAO), leading denser flocs better settling. In this study, implementation an anaerobic strategy was investigated for high-salinity (±35 g salts·L−1), using...
Biological sulfur conversion combined with phosphorus removal represents an innovative biotechnology for activated sludge (AS). However, its effect on the formation of aerobic granular (AGS) remains unclear. This study aimed at determining impact sulfide and thiosulfate performance enhanced biological (EBPR) AGS formation. Using two lab-scale sequencing batch reactors (SBR), we compared EBPR performance, degree granulation, enriched microbial community (SBR-S, 20 mg S/L) or (SBR-T, 140 as...