Particle capture models: Comparison with experimental data

Kavanagh, John Matthew ; Carrasco, Claudio ; Teresa, Maria Ines ; Riad, Maryanne ; Birch, Gavin

ANZIAM Journal, Tome 52 (2012), / Harvested from Australian Mathematical Society

Résumé

Sand filtration is a becoming a widely used technique for the treatment of urban run off water, particularly for the capture of particulate metal pollutants. Currently the design rules for such systems are focussed on the civil engineering and hydrological aspects, whilst metal removals are typical quoted as broad percentages. The present study is the first step in developing a new design method for such systems, by comparing an established particle capture model consisting of two partial differential equations, one for particle capture and one for loading. The particle capture model was fitted to the outlet concentrations of several metal species, assuming that all particles of a particular metal are identical and have the same probability of capture. Particle loading through the column was then used as a check on the model. Whilst the particle loading results near the surface of the sand filter are typically of the right order of magnitude, the model tended to over predict loading of the particles in the mid section of the sand filter. Modelling is presented showing that the assumption of particle uniformity may be the cause of this over prediction. An example is presented where the model fails to predict the loading, highlighting the need to include dissolution and washing in future models. References arc Design Guideline Manual Stormwater Treatment Devices {Auckland: Auckland Regional Council 2003} http://www.arc.govt.nz/plans/technicalpublications/technical-publications-1-50.cfm [Accessed 30/05/2010]. G. Birch and S. Taylor Source of heavy metals in sediments of the Port Jackson estuary, Australia Science of The Total Environment, 227, Issues 2--3, Pages 123--138, 9 March 1999, doi:10.1016/S0048-9697(99)00007-8 G. F. Birch and S. McCready and E. R. Long and S. S. Taylor and G. Spyrakis Contaminant chemistry and toxicity of sediments in Sydney Harbour Australia: spatial extent and chemistry---toxicity relationships Marine Ecology Progress Series, 363 71--87, 2008 doi:10.3354/meps07445 G. F. Birch, and S. McCready Catchment sources of heavy metal contamination and influence on the quality of receiving basin sediments in Port Jackson, Australia The Science of the Total Environment 407 2820--283, 2009 G. F. Birch, Contaminated soil and sediments in a highly-developed catchment-estuary system (Sydney estuary, Australia), an innovative stormwater remediation strategy Journal of Soils and Sediments, 11, 194--208, 2011. C. Carrasco. Experimental Studies of Sand Infiltration MPhil thesis, The University of Sydney, 2012. ccsmpc Georgia Stormwater Management Manual Technical Handbook 2, 2002 http://www.georgiastormwater.com/ [Accessed 18/5/2010]. R. A. Claytor and T. R. Schueler Design of Stormwater Filtering Systems, Ellicot City {Chesapeake Research Consortium}, 1996 T. N. Debo and A. J. Reese. Municipal Storm Water Management {Lewis Publishers, New York}, 2002 V. Gitis and E. Rubinstein and M. Livshits and G. Ziskindc Deep-bed filtration model with multistage deposition kinetics Chemical Engineering Journal, 163 78--85, 2010 M. Jartuna and R. T.Ottesen and E. Steinnesb and T. Voldena. Runoff of particle bound pollutants from urban impervious surfaces studied by analysis of sediments from stormwater traps Science of the Total Environment 396, 147--163, 2008 E. McKenzie and C. Wong and P. Green and M. Kayhanian and T. Young. Size dependent elemental composition of road-associated particles Science of the Total Environment, 398 145--153, 2008 mde. Maryland Stormwater Design Manual [Online]. Maryland: Maryland Department of the Environment, 2006 uprct. Water Sensitive Urban Design: Technical Guidelines for Western Sydney. Sydney: Upper Parramatta River Catchment Trust, 2004 A. Zamani and B. Maini. Flow of dispersed particles through porous media---Deep bed filtration Journal of Petroleum Science and Engineering, 69, 71-88, 2009 J. P. Herzig, D. M. Leclerc, P. Le. Goff. Flow of Suspensions through Porous Media—Application to Deep Filtration Journal of Industrial and Engineering Chemistry , 62 5, 8--35, 1970 doi:10.1021/ie50725a003

Détail

Publié le : 2012-01-01
DOI : https://doi.org/10.21914/anziamj.v53i0.5072