Inclined Plate Settlers to Treat Storm-Water Solids
Publication: Journal of Environmental Engineering
Volume 135, Issue 8
Abstract
Many pollutants in storm-water runoff associate with the particulate fraction, as well as cause receiving water degradation themselves. Therefore, removing a substantial amount of the solids (such as all particles above a critical particle size) can reduce the concentrations of many pollutants. Enhanced sedimentation methods have been encouraged to reduce the footprint of treatment devices and meet the 80% suspended solids reduction goal established in many locations. Inclined plates/tube settlers, where overlapping plates result in large settling areas and small device footprints, treated multiple contaminants when operated in laminar flow conditions (Pitt et al. 1999). This project extends that work by investigating the potential of inclined plate settlers to treat runoff when Reynolds numbers ranged from 7.5 to 50,000. These settlers achieved high removals for particles with a density of sand over the range of Reynolds’ numbers. The influent-to-effluent median particle-size reduction in field testing was .
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Acknowledgments
The writers would like to thank Terre Hill Concrete Products, Inc., for the opportunity to use a Terre Kleen device to evaluate the effectiveness of inclined plate settlers both in the full-scale laboratory and field settings. Support for the field testing was provided by THCP through the USEPA’s Environmental Technology Verification Program. The complete verification report may be found at NSF, Inc.’s Web site. In addition, the authors would like to thank the Harrisburg Public Works department for the field testing site. Finally, this work was performed wholly as part of the undergraduate research activities of Jim Elligson and Chris Roenning, as well as the graduate research of Brad Mikula. It was not sponsored or endorsed by their current employers.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 135 • Issue 8 • August 2009
Pages: 621 - 626
Copyright
© 2009 ASCE.
History
Received: Jun 13, 2008
Accepted: Oct 19, 2008
Published online: Jul 15, 2009
Published in print: Aug 2009
Authors
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