Development of a correlation to study parameters affecting nitrification in a domestic wastewater treatment plant

COSKUNER, Gulnur ; JASSIM, Majeed S

In: Journal of chemical technology and biotechnology (1986), Jg. 83 (2008), Heft 3, S. 299-308

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BACKGROUND: Nitrification performance of an activated sludge reactor treating weak domestic wastewater was investigated for 11 months. Ammonia nitrogen removals were investigated as a function of wastewater composition and operational conditions. Backward elimination experimental design was used to determine the influence of the most important independent variables on NH3-N removal efficiencies. Influent ammonia and biological oxygen demand (BOD5) concentrations, hydraulic retention time (HRT), mixed liquid suspended solids (MLSS), temperature, pH and dissolved oxygen (DO) concentration were considered as independent variables. This study aimed to find the most important parameters to describe nitrification performance. RESULTS: The presence of nitrification was confirmed by ammonia and nitrate variations throughout the reactor; ammonia oxidizing bacteria (AOB) populations were determined using a fluorescence in situ hybridization (FISH) method. MLSS concentration, influent BOD5 concentration and temperature were found to be the most influential factors on nitrification performance. The empirical correlation using multiple linear regressions was statistically significant and produced an adjusted coefficient of multiple determinations (R2adj) of 92.5%. CONCLUSION: Correlation provides a good understanding of the various parameters that affect the nitrification process, and could be extended to other case studies. Using these results, operators can apply proper operational strategies to maintain nitrification in wastewater treatment plants.

Titel:	Development of a correlation to study parameters affecting nitrification in a domestic wastewater treatment plant
Autor/in / Beteiligte Person:	COSKUNER, Gulnur ; JASSIM, Majeed S
Link:	Full Text Finder (Volltext) E-Journal im Bestand der UB Hagen? View record from PASCAL Archive
Zeitschrift:	Journal of chemical technology and biotechnology (1986), Jg. 83 (2008), Heft 3, S. 299-308
Veröffentlichung:	Chichester: Wiley, 2008
Medientyp:	academicJournal
Umfang:	print, 37 ref
ISSN:	0268-2575 (print)
Schlagwort:	Biotechnology Biotechnologies Chemical engineering Génie chimique Metallurgy, welding Métallurgie, soudage Sciences exactes et technologie Exact sciences and technology Sciences appliquees Applied sciences Genie chimique Réacteurs Reactors Pollution Traitement et pollution des eaux Water treatment and pollution Eaux usées Wastewaters Procédés généraux d'épuration General purification processes Ouvrages d'assainissement: égoûts, stations d'épuration, émissaires, . Sewerage works: sewers, sewage treatment plants, outfalls, . Analyse corrélation Correlation analysis Análisis correlación Bactérie Bacteria Boue activée Activated sludge Lodo activado Corrélation Correlation Correlación DBO Biological oxygen demand Eau usée domestique Domestic waste water Agua residual doméstica Eau usée Waste water Agua residual Epuration eau usée Waste water purification Depuración aguas servidas Fluorescence Fluorescencia In situ Nitrification Nitrificación Oxygène dissous Dissolved oxygen Oxígeno disuelto Plan expérience Experimental design Plan experiencia Réacteur Reactor Régression linéaire Linear regression Regresión lineal Rétention Retention Retención Station épuration Sewage treatment plant Estación depuradora pH activated sludge reactor correlation multiple linear regression nitrification wastewater treatment
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Cumhuriyet University, Environmental Engineering Department, 58140 Sivas, Turkey ; Bahrain University, Chemical Engineering Department, P.O. Box, 32038, Bahrain Rights: Copyright 2008 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Chemical engineering ; Pollution

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