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Multi-scale modelling of bioreactor-separator system for wastewater treatment with two-dimensional activated sludge floc dynamics \ Water research : the journal of the International Association on Water Quality [Artikel]
Ofiteru, I.D. \ Bellucci, M. \ Picioreanu, C. \ Lavric, V. \ Curtis, T.P. \ 2014
A simple "first generation" multi-scale computational model of the formation of activated sludge flocs at micro-scale and reactor performance at macro-scale is proposed. The model couples mass balances for substrates and biomass at reactor scale with ...
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Minimization of excess sludge production for biological wastewater treatment [review] \ Water research : the journal of the International Association on Water Quality [Artikel]
Wei, Y.S. \ Houten, R.T. van \ Borger, A.R. \ 2003
Excess sludge treatment and disposal currently represents a rising challenge for wastewater treatment plants (WWTPs) due to economic, environmental and regulation factors. There is therefore considerable impetus to explore and develop strategies and ...
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Determining short-term biochemical oxygen demand and respiration rate in an aeration tank by using respirometry and estimation \ Water research : the journal of the International Association on Water Quality [Artikel]
Spanjers, H. \ Olssen, G. \ Klapwijk, A. \ 1994
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Forward and backward uncertainty propagation: an oxidation ditch modelling example \ Water research : the journal of the International Association on Water Quality [Artikel]
Abusam, A. \ Keesman, K.J. \ Straten, G. van \ 2003
The procedure of carrying out backward uncertainty propagation is illustrated in this technical note by working example for an oxidation ditch wastewater treatment plant
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Modelling anaerobic biomass growth kinetics with a substrate threshold concentration \ Water research : the journal of the International Association on Water Quality [Artikel]
Ribes, J. \ Keesman, K. \ Spanjers, H. \ 2005
Many bacteria have been observed to stop growing below a certain substrate threshold concentration. In this study, a modification of the Monod kinetics expression has been proposed to take into account this substrate threshold concentration observed ...
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Modelling nitrification, heterotrophic growth and predation in activated sludge \ Water research : the journal of the International Association on Water Quality [Artikel]
Moussa, M.S. \ Hooijmans, C.M. \ Lubberding, H.J. \ 2005
A mathematical model describing the interaction between nitrifiers, heterotrophs and predators in wastewater treatment has been developed. The inclusion of a predation mechanism is a new addition to the existing activated sludge models. The developed ...
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Comparing steroid estrogen, and nonylphenol content across a range of European sewage plants with different treatment and management practices \ Water research : the journal of the International Association on Water Quality [Artikel]
Johnson, A.C. \ Aerni, H.R. \ Gerritsen, A. \ 2005
The effluent of 17 sewage treatment works (STW) across Norway, Sweden, Finland, The Netherlands, Belgium, Germany, France and Switzerland was studied for the presence of estradiol (E2), estrone (E1), ethinylestradiol (EE2) and nonylphenol (NP). Treat ...
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Poly-beta-hydroxybutyrate metabolism in dynamically fed mixed microbial cultures \ Water research : the journal of the International Association on Water Quality [Artikel]
Beun, J.J. \ Dircks, K. \ Loosdrecht, M.C.M. van \ 2002
The kinetics of production and degradation of poly-p-hydroxybutyrate (PHB) by a mixed activated sludge culture growing on acetate was studied in a sequencing batch reactor (SBR). Occasionally a very high amount of acetate was added to the steady stat ...
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A method to estimate denitrification potential for predenitrification systems using NUR batch test \ Water research : the journal of the International Association on Water Quality [Artikel]
Kujawa, K. \ Klapwijk, A. \ 1999
NUR: Nitrate Utilisation Rate
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Effect of nitrate on acetate degradation in a sulfidogenic staged reactor \ Water research : the journal of the International Association on Water Quality [Artikel]
Lens, P.N.L. \ Sipma, J. \ Hulshoff Pol, L.W. \ 2000
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Simultaneous storage and degradation of PHB and glycogen in activated sludge cultures \ Water research : the journal of the International Association on Water Quality [Artikel]
Carta, F. \ Beun, J.J. \ Loosdrecht, M.C.M. van \ 2001
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Completely autotrophic nitrogen removal over nitrite in one single reactor \ Water research : the journal of the International Association on Water Quality [Artikel]
Sliekers, A.O. \ Derwort, N. \ Campos Gomez, J.L. \ [et al.] \ 2002
In this paper, a completely autotrophic process is described, in which aerobic ammonia-oxidizers and anaerobic ammonia oxidizers simultaneously oxidize ammonia to dinitrogen gas and a small amount of nitrate. This is achieved in one single reactor, a ...
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Identification of activated sludge and wastewater characteristics using respirometric batch - experiments \ Water research : the journal of the International Association on Water Quality [Artikel]
Brouwer, H. \ Klapwijk, A. \ Keesman, K.J. \ 1998
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Optimised operation and design of alternating activated sludge processes for N-removal \ Water research : the journal of the International Association on Water Quality [Artikel]
Lukasse, L.J.S. \ Keesman, K.J. \ 1999
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Substrate flux into storage and growth in relation to activated sludge modeling \ Water research : the journal of the International Association on Water Quality [Artikel]
Krishna, C. \ Loosdrecht, M.C.M. van \ 1999
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Bio-augmentation by nitrification with return sludge \ Water research : the journal of the International Association on Water Quality [Artikel]
Salem, S. \ Berends, D.H.J.G. \ Heijnen, J. \ Loosdrecht, M.C.M. van \ 2003
Bio-augmentation can be used to obtain nitrification in activated sludge processes that operate at sub-optimal solid retention times. In this study, we evaluated the potential of augmenting the endogenous nitrifying bacteria, by implementing a nitrif ...
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Effect of feeding pattern and storage on the sludge settleability under aerobic conditions \ Water research : the journal of the International Association on Water Quality [Artikel]
Martins, A.M.P. \ Heijnen, J.J. van \ Loosdrecht, M.C.M. van \ 2003
The selection of filamentous bacteria is often assumed to be associated with specific microbial properties such as growth rate, substrate uptake rate, substrate affinity and potential for substrate storage. In this study we aimed to verify some of th ...
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Aerobic granulation in a sequencing batch airlift reactor \ Water research : the journal of the International Association on Water Quality [Artikel]
Beun, J.J. \ Loosdrecht, M.C.M. van \ Heijnen, J.J. \ 2002
Aerobic granular sludge was cultivated in an intensely mixed sequencing batch airlift reactor (SBAR). A COD loading of 2.5 kg Acetate-COD/(m(3) d) was applied. Granules developed in the reactor within one week after inoculation with suspended activat ...
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Formation of aerobic granules and conversion processes in an aerobic granular sludge reactor at moderate and low temperatures \ Water research : the journal of the International Association on Water Quality [Artikel]
Kreuk, M.K. de \ Pronk, M. \ Loosdrecht, M.C.M. van \ 2005
Temperature changes can influence biological processes considerably. To investigate the effect of temperature changes on the conversion processes and the stability of aerobic granular sludge, an aerobic granular sludge sequencing batch reactor (GSBR) ...
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Bioflocculation of mesophilic and thermophilic activated sludge \ Water research : the journal of the International Association on Water Quality [Artikel]
Vogelaar, J.C.T. \ Keizer, A. de \ Spijker, S. \ 2005
Thermophilic activated sludge treatment is often hampered by a turbid effluent. Reasons for this phenomenon are so far unknown. Here, the hypothesis of the temperature dependency of the hydrophobic interaction as a possible cause for diminished therm ...
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