NDLI: Modelling of an oil refinery wastewater treatment plant.

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Modelling of an oil refinery wastewater treatment plant.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Pinzón Pardo, A. L. Brdjanovic, D. Moussa, M. S. López-Vázquez, C. M. Meijer, S. C. F. Van Straten, H. H. A. Janssen, A. J. H. Amy, G. Van Loosdrecht, M. C. M.
Description	Country affiliation: Netherlands Author Affiliation: Pinzón Pardo AL ( UNESCO-IHE Institute for Water Education, P.O. Box 3015, 2601 DA Delft, The Netherlands.)
Abstract	The Activated Sludge Model No. 3 (ASM3) and Dutch calibration guidelines (STOWA) were evaluated in the modelling of an activated sludge system treating effluents from a large oil refinery. The plant was designed to remove suspended solids, organic matter and nitrogen from wastewater at an average water temperature of 34 degrees C. The plant consists of three tanks in series; the first two tanks operate in on-off aeration mode with pure oxygen for N-removal, whilst extra methanol is added for the denitrification, and the third tank is maintained as constantly aerobic. Calibration was performed based on a simplified influent characterisation and extra batch experiments (nitrification and denitrification). With the adjustment of only four parameters the model proved capable of describing the performance of the plant concerning both the liquid phase and the biomass. The model was further used to analyse possible modifications in the plant layout and optimize operational conditions in order to reduce operating costs. Modelling results indicated reduction in methanol dosage by implementing an idle time between aerobic and anoxic phases. In this way, surplus methanol was prevented from entering during the aerobic period. Moreover, simulations showed that the most cost-effective option regarding the denitrification process was a combined pre-post-denitrification scheme, without the need for enlarging existing basins. It can be concluded that although ASM3 and STOWA guidelines were originally developed for domestic wastewater application at a temperature range of 10 to 20 degrees C, they proved well capable of describing the performance of an oil refinery wastewater treatment plant operating at 34 degrees C. Moreover, the plant model proved useful for optimization of the plant performance regarding operational costs.
File Format	HTM / HTML
ISSN	09593330
Issue Number	11
Volume Number	28
e-ISSN	1479487X
Journal	Environmental Technology
Language	English
Publisher	Taylor & Francis
Publisher Date	2007-11-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Environmental Health Industrial Waste Models, Biological Petroleum Waste Disposal, Fluid Methods Water Pollutants, Chemical Metabolism Bioreactors Extraction And Processing Industry Methanol Analysis Nitrogen Evaluation Studies Journal Article
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Waste Management and Disposal Medicine Water Science and Technology

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