A5014069469- Wastewater Treatment and Nitrogen Removal
- Membrane Separation Technologies
- Anaerobic Digestion and Biogas Production
- Odor and Emission Control Technologies
- Healthcare and Environmental Waste Management
- Fuel Cells and Related Materials
- NMR spectroscopy and applications
- Recycled Aggregate Concrete Performance
- Groundwater flow and contamination studies
- Constructed Wetlands for Wastewater Treatment
- Membrane-based Ion Separation Techniques
Delft University of Technology
2020-2022
In aerobic granular sludge (AGS) reactors, granules of different sizes coexist in a single reactor. Their differences settling behaviour cause stratification the settled granule bed. combination with substrate concentration gradients over reactor height during anaerobic plug-flow feeding regime, this can result functional between sizes. study, we compared hydrolytic activity 4 size ranges (between 0.5 and 4.8 mm diameter) collected from full-scale AGS installation. Protease amylase...
Abstract Aerobic granular sludge (AGS) technology allows simultaneous nitrogen, phosphorus, and carbon removal in compact wastewater treatment processes. To operate, design, model AGS reactors, it is essential to properly understand the diffusive transport within granules. In this study, mass transfer full‐scale lab‐scale was characterized with nuclear magnetic resonance (NMR) methods. Self‐diffusion coefficients of water inside granules were determined pulsed‐field gradient NMR, while...
Biofilm and granular sludge processes depend on diffusion of substrates. Despite their importance for the kinetic description biofilm reactors, coefficients reported in literature vary greatly. The aim this simulation study was to determine what extent methods that are used measure contribute variability. Granular as a case study. Six common were selected, based mass balances microelectrodes. A Monte Carlo carried out theoretical precision each method, considering uncertainty various...
Granular sludge processes are frequently used in domestic and industrial wastewater treatment. The granule buoyant density biomass important parameters for the design operation of granular reactors. Different methods to measure include pycnometer method, Percoll gradient dextran blue settling velocity method. In this study, a comparison was made between these four granules from full-scale plant treating sewage. effect salinity on assessed as well. Three out evaluated yielded comparable...
Aerobic granular sludge (AGS) is an advanced biofilm-based technology for wastewater treatment. Diffusion of substrates into the granules a key aspect this technology. Domestic contains soluble organic different sizes that could potentially diffuse granules. In study, relation between molecular weight substrate and its diffusion coefficient within granule was studied with model (polyethylene glycols (PEGs) 62 10 000 Da). The coefficients from full-scale installation were measured 'transient...
Abstract Despite aerobic granular sludge wastewater treatment plants operating around the world, our understanding of internal granule structure and its relation to efficiency remains limited. This can be attributed in part drawbacks time-consuming, labor-intensive, invasive microscopy protocols which effectively restrict samples sizes may introduce artefacts. Time-domain nuclear magnetic resonance (NMR) allows non-invasive measurements describe structural features opaque, complex materials...
<p>Effective diffusion coefficients are often required for kinetic descriptions of biofilms. Many previous studies have measured specific molecule-biofilm combinations. As a result, many biofilm researchers today rely on literature values their own system. However, the reported in fall within wide range, even same molecule. One potential cause this range is accuracy methods used to measure coefficients. The objective study was determine precision (similarity between repeated...
Cochius Den Otter, S.; Honkoop, M.; Van Berg, L.; Ville, A.; Hunfeld, N.; Diehl, J.; Kraemer, U.; Verbruggen, S. Author Information