Settling Velocity Grading of Particle Bound PAHs: Case of Wet Weather Flows within Combined Sewer Systems
Publication: Journal of Environmental Engineering
Volume 135, Issue 11
Abstract
The elaboration, management, and design of the sedimentation devices require an improved knowledge not only on the suspended solids (SS) settling velocity but also on the distributions of these particulate pollutants by category of SS settling velocity. Nevertheless, there is currently a lack of available data regarding the settling velocity grading of particle bound pollutants. As a consequence, this study investigating the settling velocity grading of particle bound polycyclic aromatic hydrocarbons (PAHs) in wet weather flows within combined sewers was launched. The pursed objectives were to compare the SS and PAH settling velocity grading curves and hence to assess whether or not PAHs were associated with a specific settling velocity category. Investigations were carried out for three storms at two sampling sites within the Parisian combined sewer. Results indicate that most of PAHs seem to be preferentially associated with particles with a settling velocity .
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Acknowledgments
This study has been performed within the framework of the OPUR research program. The writers gratefully acknowledge the Seine-Normandy Water Agency, the Municipality of Paris, the Interdepartmental Association for Sewage Disposal in Paris Conurbation (SIAAP) for their financial support.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 135 • Issue 11 • November 2009
Pages: 1155 - 1160
Copyright
© 2009 ASCE.
History
Received: Feb 22, 2007
Accepted: Jun 9, 2009
Published online: Oct 15, 2009
Published in print: Nov 2009
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