The CFD modeling in bioreactor tracer studies

• Autorzy: Zima P.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the effects of dispersion on predicting longitudinal tracer concentration profiles in an activated sludge bioreactor located at the Wschód Waste-Water Treatment Plant in Gdansk. The aim of this study has been to use the one-dimensional advection-dispersion equation to simulate a non-active substance flow (based on the measured tracer concentration). The simulation results were compared with those obtained in the traditional tanks-in-series approach, commonly used in designing biological reactors. The dispersion coefficient was calculated from a statistical formula based on differences in the tracer concentration distributions at two sampling points. The study has shown that the numerical simulation using the one-dimensional tracer migration equation yields better results than the tanks-in-series model in predicting longitudinal tracer concentration profiles. This paper is an in-troduction to the study of reactive substances in activated sludge bioreactors.

Słowa kluczowe

EN

mathematical modeling; pollutant migration; reactor hydraulics; advection-dispersion equation; tracer studies

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2007
• Tom: Vol. 11, No 4
• Strony: 439--447
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Zima P.

• Gdansk University of Technology, Faculty of Civil and Environmental Engineering, Narutowicza 11/12, 80-952 Gdansk, Poland,

Bibliografia

• [1] Fletcher C A J 1991 Computational Techniques for Fluid Dynamics 1. Fundamental and General Techniques, Springer-Verlag, Berlin
• [2] LeVeque R J 2002 Finite Volume Method for Hyperbolic Problems, Cambridge University Press, New York
• [3] Sawicki J M 2001 Mass and Energy Transfer, Wydawnictwo Politechniki Gdańskiej, Gdańsk (in Polish)
• [4] Tchobanoglous G, Burton F Land Stensel H D 2004 Wastewater Engineering, Treatment and Reuse, McGrow-Hill Education Fourth International Edition
• [5] Potter D 1982 Computational Physics, PWN, Warsaw (in Polish)
• [6] Fischer H B, List E J, Koh R C Y, Imberger J and Brooks N H 1979 Mixing in Inland and Coastal Waters, Academic Press, New York