Journal ArticleDOI
A metabolic model of the biological phosphorus removal process: I. Effect of the sludge retention time
TLDR
A metabolic model of the biological phosphorus removal process was developed and verified over a wide range of growth rates, and one set of kinetic parameters was capable of describing the measured conversions of all components observed in the reactor as a function of the sludge retention time.Abstract:
The biological phosphorus removal process is a process which depends basically on three internal storage compounds. Poly-beta-hydroxybutyrate (PHB) produced during the anaerobic phase is used as substrate for biomass, polyphosphate, and glycogen formation. The reaction rates of the aerobic processes are primarily determined by the PHB content of the cells. This PHB content is highly dynamic due to the conversions during the anaerobic and aerobic phase of the cycle and the ratio between substrate addition and biomass present in the reactor. The amount of biomass present in the reactor is determined by the sludge retention time and growth rate. A metabolic model of the biological phosphorus removal process was developed and verified over a wide range of growth rates. The effect of different growth rates on the internal fractions of stored components was determined and described mathematically. One set of kinetic parameters was capable of describing the measured conversions of all components observed in the reactor as a function of the sludge retention time.read more
Citations
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Textile dye wastewater characteristics and constituents of synthetic effluents : a critical review
TL;DR: In this article, the authors present a critical review of the currently available literature regarding typical and real characteristics of the textile effluents, and also constituents including chemicals used for preparing simulated textile wastewater containing dye, as well as the treatments applied for treating the prepared wastewater.
Journal ArticleDOI
Microbiology and biochemistry of the enhanced biological phosphate removal process
TL;DR: In this paper, a review of the microbiological and biochemical aspects of the enhanced biological phosphate removal (EBPR) process is presented, including microorganisms responsible for EBPR, isolation of polyphosphate accumulating organisms (PAOs), microbial diversity of the EBPR sludge, biochemical metabolisms of PAOs, energy budget in PAOs metabolism, denitrification by PAO, glycogen accumulating non-poly-P organisms (GAOs), etc.
Journal ArticleDOI
Aerobic granulation in a sequencing batch reactor
J.J Beun,A Hendriks,M.C.M. van Loosdrecht,Eberhard Morgenroth,Peter A. Wilderer,J. J. Heijnen +5 more
TL;DR: It is shown that granule formation in aerobic reactors is feasible and can be exploited to increase the volumetric conversion capacity of such reactors.
Journal ArticleDOI
Activated sludge wastewater treatment plant modelling and simulation: state of the art
TL;DR: These are the nowadays most frequently used white-box models for description of biological nitrogen and phosphorus removal activated sludge processes, mainly applicable to municipal wastewater systems, but can be adapted easily to specific situations such as the presence of industrial wastewater.
Journal ArticleDOI
Aerobic granulation with industrial wastewater in sequencing batch reactors.
TL;DR: The presence of TSS in the effluent of the SBRs was strongly affected by either the length of the withdrawal period or by the particulated COD to biomass ratio (CODp/VSS) applied to the systems.
References
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Journal ArticleDOI
Model of the anaerobic metabolism of the biological phosphorus removal process: Stoichiometry and pH influence
TL;DR: A structured metabolic model, based on glycogen as the source of the reduction equivalents in the anaerobic phase and the effect of the pH on the energy requirement of the uptake of acetate, is developed and explains the experimental results satisfactorily.
Journal ArticleDOI
Stoichiometric Model of the Aerobic Metabolism of the Biological Phosphorus Removal Process
TL;DR: The uptake of phosphate and storage as polyphosphate is shown to have a direct effect on the observed oxygen consumption in the aerobic phase of the biological phosphorus removal process.
Book ChapterDOI
Effect of phosphorus accumulation on acetate metabolism in the biological phosphorus removal process
TL;DR: From energy balance consideration, the energy required for the accumulation of polyphosphate is found to be very little compared with the total energy produced and the sludge can maintain the yield coefficient at a required level even when a large amount of poly PHB is accumulated.
Journal Article
Metabolic behaviour of Acinetobacter spp. in enhanced biological phosphorus removal - a biochemical model
TL;DR: A biochemical model is presented that explains the behaviour of Acinetobacter spp.