Application of CFD modelling at a full-scale ozonation plant for the removal of micropollutants from secondary effluent

Since November 2009, Germany's first full-scale ozonation plant for tertiary treatment of secondary effluent is in continuous operation. A kinetic model was developed and combined with the commercial computational fluid dynamics (CFD) software ANSYS(®) CFX(®) to simulate the removal of micropol...

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Bibliographic Details
Published in:	Water science and technology Vol. 68; no. 6; pp. 1336 - 1344
Main Authors:	LAUNER, M, LYKO, S, FAHLENKAMP, H, JAGEMANN, P, EHRHARD, P
Format:	Journal Article
Language:	English
Published:	London International Water Association 01-01-2013 IWA Publishing
Subjects:	Analysis methods Applied sciences CAD Computational fluid dynamics Computer aided design Computer applications Computer simulation Constants Data Data processing Diatrizoate - chemistry Diclofenac - chemistry Dynamics Effluents Exact sciences and technology Fluid dynamics General purification processes Hydrodynamics Mass transfer Mathematical models Metoprolol - chemistry Micropollutants Modelling Models, Theoretical Natural water pollution Organic matter Oxidants - chemistry Ozonation Ozone Ozone - chemistry Ozonization Pollutant removal Pollution Rate constants Removal Scale (ratio) Simulation Waste Disposal, Fluid - methods Wastewaters Water Pollutants, Chemical - chemistry Water treatment and pollution Ozonization wastewater computational fluid dynamics modelling Computational fluid dynamics micropollutants Micropollutant ozonation Modeling Effluent Mass transfer Waste water full-scale application
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Summary:	Since November 2009, Germany's first full-scale ozonation plant for tertiary treatment of secondary effluent is in continuous operation. A kinetic model was developed and combined with the commercial computational fluid dynamics (CFD) software ANSYS(®) CFX(®) to simulate the removal of micropollutants from secondary effluents. Input data like reaction rate constants and initial concentrations of bulk components of the effluent organic matter (EfOM) were derived from experimental batch tests. Additionally, well-known correlations for the mass transfer were implemented into the simulation model. The CFD model was calibrated and validated by full-scale process data and by analytical measurements for micropollutants. The results show a good consistency of simulated values and measured data. Therewith, the validated CFD model described in this study proved to be suited for the application of secondary effluent ozonation. By implementing site-specific ozone exposition and the given reactor geometry the described CFD model can be easily adopted for similar applications.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0273-1223 1996-9732
DOI:	10.2166/wst.2013.378