Journal ArticleDOI
Effect of different operational parameters in the enhanced biological phosphorus removal process. Experimental design and results.
TLDR
The empirical model obtained indicates that the factor most influencing the EBPR process is the influent COD/P ratio, whilst the anaerobic fraction is that which has least influence.Abstract:
The uncontrolled dumping of phosphorus into a water environment creates serious problems of eutrophication, affecting water quality and causing grave problems in the aquatic ecosystem. European legislation demands drastic reduction of phosphorus dissolved in wastewater. Enhanced Biological Phosphorus Removal (EBPR) is the current tendency in wastewater treatment. This biological process depends on a multiplicity of variables, but its three main factors are: influent COD/P ratio, anaerobic fraction and sludge retention time (SRT). The aim of this work is to statistically determine the effect of these three parameters in EBPR through a response surface methodology. The objective function that has been chosen is phosphorus removed per unit biomass formed. This function provides ample information on BPR, since the quantity of phosphorus removed depends on the accumulative capacity of the microorganisms present. Two levels were chosen for the SRT (5 and 10 days), two for the anaerobic fraction (0.1 and 0.2), a...read more
Citations
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Journal ArticleDOI
Characterisation of phosphorous forms in wastewater treatment plants.
TL;DR: In this article, the removal of different forms of phosphorous (namely total phosphorous, soluble phosphorous and total phosphate) has been studied in two municipal wastewater treatment plants (WWTP) with different characteristics, but without any specific implemented strategy for phosphorous removal.
Journal ArticleDOI
Inhibitory factors affecting the process of enhanced biological phosphorus removal (EBPR) – A mini-review
TL;DR: This comprehensive overview will not only help to understand the overall mechanism of the EBPR process, but also benefit the researchers and engineers to consider all the possible factors affecting the process in the urban sewage treatment plants.
Journal ArticleDOI
Comparison of pilot scale performances between membrane bioreactor and hybrid conventional wastewater treatment systems
TL;DR: In this article, the authors compared a membrane bioreactor (MBR) system with a combined biological and chemical process (CBCP), focusing on effluent water qualities and economic assessment.
Journal ArticleDOI
Municipal wastewater phosphorus removal by coagulation
TL;DR: It was concluded that adsorption played a more important role than precipitation in phosphorus removal, and around 65% of phosphorus can be retained through adsor adaptation by goethite‐coated silica sand.
Journal ArticleDOI
Integrated catalytic wet air oxidation and aerobic biological treatment in a municipal WWTP of a high-strength o-cresol wastewater.
María Eugenia Suárez-Ojeda,Albert Guisasola,Juan A. Baeza,Azael Fabregat,Frank Stüber,Agustí Fortuny,Josep Font,Julián Carrera +7 more
TL;DR: This detailed study allowed to understand the biodegradability enhancement exhibited by an AC/CWAO effluent and to achieve a successful strategy for coupling the AC/ CWAO step with an aerobic biological treatment for a high-strength o-cresol wastewater.
References
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Book
Standard methods for the examination of water and wastewater
TL;DR: The most widely read reference in the water industry, Water Industry Reference as discussed by the authors, is a comprehensive reference tool for water analysis methods that covers all aspects of USEPA-approved water analysis.
Journal ArticleDOI
Biochemical model for enhanced biological phosphorus removal
TL;DR: A biochemical model that explains bio-P removal mechanisms occurring under anaerobic, aerobic and anoxic conditions of the process is presented and polyphosphate is suggested to be as a source of energy both for the reestablishment of the proton motive force and for substrate storage.
Journal ArticleDOI
Phosphorus and nitrogen removal with minimal COD requirement by integration of denitrifying dephosphatation and nitrification in a two-sludge system
TL;DR: In this article, an anaerobic-anoxic (A2) sequencing batch reactor (SBR) coupled with a nitrification SBR was evaluated. And the technical feasibility for simultaneous phosphorus and nitrogen removal in the proposed two-sludge system was evaluated, and it was concluded that the separation of the nitrification step leads to an optimal process design for the application of denitrifying dephosphatation.
Journal Article
Biological excess phosphorus removal - steady state process design.
TL;DR: The calculated P removal correlates well with the removal observed in laboratory-scale systems treating municipal waste flows, over wide ranges of sludge ages and influent characteristics.
Journal ArticleDOI
A metabolic model of the biological phosphorus removal process: I. Effect of the sludge retention time
TL;DR: 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.