Search Results - "van der Graaf, J.H.J.M."

Impact of temperature on raw wastewater composition and activated sludge filterability in full-scale MBR systems for municipal sewage treatment by Krzeminski, P., Iglesias-Obelleiro, A., Madebo, G., Garrido, J.M., van der Graaf, J.H.J.M., van Lier, J.B.

“…The main objective of this study was to investigate the influence of seasonal temperature fluctuations on raw domestic wastewater composition and MBR sludge…”
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Activated sludge characteristics affecting sludge filterability in municipal and industrial MBRs: Unraveling correlations using multi-component regression analysis by Van den Broeck, R., Krzeminski, P., Van Dierdonck, J., Gins, G., Lousada-Ferreira, M., Van Impe, J.F.M., van der Graaf, J.H.J.M., Smets, I.Y., van Lier, J.B.

“…► Activated sludge (AS) samples were taken from ten different membrane bioreactors. ► Correlations with AS filterability and AS characteristics were assessed…”
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Particle counting as surrogate measurement of membrane integrity loss and assessment tool for particle growth and regrowth in the permeate of membrane bioreactors by Lousada-Ferreira, M., van Lier, J.B., van der Graaf, J.H.J.M.

“…Normalized particle counting data for permeate samples with no apparent membrane leakage or significant growth and aggregation. [Display omitted] •MBR membrane…”
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The optimal MBR configuration: Hybrid versus stand-alone — Comparison between three full-scale MBRs treating municipal wastewater by Krzeminski, P., Langhorst, W., Schyns, P., de Vente, D., Van den Broeck, R., Smets, I.Y., Van Impe, J.F.M., van der Graaf, J.H.J.M., van Lier, J.B.

“…Construction or modernization of a wastewater treatment plant (WWTP) with membrane bioreactor (MBR) technology requires the selection of an optimal…”
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The influence of solids retention time on activated sludge bioflocculation and membrane fouling in a membrane bioreactor (MBR) by Van den Broeck, R., Van Dierdonck, J., Nijskens, P., Dotremont, C., Krzeminski, P., van der Graaf, J.H.J.M., van Lier, J.B., Van Impe, J.F.M., Smets, I.Y.

“…► A pilot-scale MBR was operated for more than two years with real communal wastewater. ► Membrane bioreactor effluent quality was better at higher solids…”
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The (in)significance of apparent viscosity in full-scale municipal membrane bioreactors by Moreau, A.A., Ratkovich, N., Nopens, I., van der Graaf, J.H.J.M.

“…Ten pilot and full-scale municipal membrane bioreactor (MBR) plants throughout Europe were investigated during the period 2007–2008 using the Delft Filtration…”
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Analysis of the filterability in industrial MBRs. Influence of activated sludge parameters and constituents on filterability by Gil, J.A., Krzeminski, P., van Lier, J.B., van der Graaf, J.H.J.M., Wijffels, T., Prats, D.

“…► We analyzed the impact of constituents of industrial activated sludge on filterability. ► Permeability alone has demonstrated to be a weak parameter to…”
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Start-up of decentralized MBRs Part I: The influence of operational parameters by Gil, J.A, Dorgeloh, E, van Lier, J.B, van der Graaf, J.H.J.M, Prats, D

“…This paper aims to be a quick reference guide to start-up decentralized membrane bioreactors (MBRs). The first part of this study focuses on the impact of…”
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Impact of inflow conditions on activated sludge filterability and membrane bioreactor (MBR) operational performance by Krzeminski, P., van der Graaf, J.H.J.M., van Lier, J.B.

“…Operation and performance of membrane bioreactors (MBRs) for wastewater treatment is influenced by changes in activated sludge properties. Therefore,…”
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Monitoring of SUR to control and enhance the performance of dead-end ultrafiltration installations treating wwtp effluent by Janssen, A.N., van Agtmaal, J., van den Broek, W.B.P., de Koning, J., Menkveld, H.W.H., Schrotter, J.-C., Teeuw, H., van der Graaf, J.H.J.M.

“…The variation of quality and fouling properties of wwtp effluent over time influences the performance of ultrafiltration (UF) plants. This research reports…”
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Particle related fractionation and characterisation of municipal wastewater by van Nieuwenhuijzen, A F, van der Graaf, J H J M, Kampschreur, M J, Mels, A R

“…Several studies show that a more detailed characterisation of the particulate matter in municipal wastewater gives a better understanding and prediction of…”
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Filtration characterisation for assessing MBR performance: three cases compared by Evenblij, H., Geilvoet, S., van der Graaf, J.H.J.M., van der Roest, H.F.

“…Understanding of membrane fouling processes in membrane bioreactors (MBR) treating municipal wastewater is essential for proper design and operation of…”
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Start-up of decentralized MBRs by Gil, J.A., Dorgeloh, E., van Lier, J.B., van der Graaf, J.H.J.M., Prats, D.

“…This paper aims to be a quick reference guide to start-up decentralized membrane bioreactors (MBRs). The first part of this study focuses on the impact of…”
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MBR activated sludge viscosity measurement using the Delft filtration characterization method by Lopez, J., Moreau, A., Gil, J.A., van der Graaf, J.H.J.M., van Lier, J.B., Ratkovich, N.

“…Viscosity measurements play an important role in activated sludge (AS) characterization, especially with respect to Membrane BioReactor (MBR) operation where…”
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Spatiotemporal variations in euphotic depth and their correlation with influencing factors in a tributary of the Three Gorges Reservoir by Zhou, Hong, Fang, Fang, Li, Zhe, Guo, Jing‐song, Koning, Jaap, Graaf, J. H. J. M

“…After the initial impoundment of the Three Gorges Reservoir (TGR), most of its tributaries have been influenced because of the backwater and the input of…”
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Investigating Phosphorus Limitation in a Fixed Bed Filter with Phosphorus and Nitrogen Profile Measurements by Scherrenberg, S. M., Neef, R., Menkveld, H. W. H., van Nieuwenhuijzen, A. F., van der Graaf, J. H. J. M.

“…In 2000, the European Union adopted the European Water Framework Directive (WFD) (European Commission, 2000). The WFD focuses on increasingly stringent…”
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Occurrence of EPS in activated sludge from a membrane bioreactor treating municipal wastewater by Evenblij, H, van der Graaf, J H J M

“…EPS are supposed to be among the causes of membrane fouling in membrane bioreactors (MBR). In this work they are measured as total proteins and total…”
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Prefiltration of wastewater effluent: Effects on foulants and performance during dead end ultrafiltration by Janssen, A.N., van Agtmaal, J., den Broek, W.B.P. van, Geilvoet, A.J., Menkveld, H.W.H., Schrotter, J.-C., der Graaf, J.H.J.M. van

“…An important trend in the development of ultrafiltration (UF) of wastewater effluent is the integration of pretreatment to improve the performance of…”
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Manipulating filterability of MBR activated sludge by pulsed substrate addition by Evenblij, Herman, Verrecht, Bart, van der Graaf, J.H.J.M., Van der Bruggen, B.

“…Membrane (ultra)filtration of activated sludge from membrane bioreactors (MBR) is usually performed with low fluxes. This is done to prevent membrane fouling…”
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Start-up of decentralised MBRs Part II: the use of additives as initial inoculum by Gil, J.A., Dorgeloh, E., van Lier, J.B., van der Graaf, J.H.J.M., Prats, D.

“…This paper corresponds to the second part of a study aiming to establish the best conditions to start-up decentralised membrane bioreactors. The first part…”
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