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Water 2019, 11(2), 316; https://doi.org/10.3390/w11020316

Large-Scale Performance Testing of Temporary Sediment Basin Treatments and High-Rate Lamella Settlers

1
Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, IA 50011, USA
2
Department of Civil, Construction, and Environmental Engineering, The University of Alabama Birmingham, Birmingham, AL 35294, USA
3
Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA
*
Author to whom correspondence should be addressed.
Received: 31 December 2018 / Revised: 8 February 2019 / Accepted: 11 February 2019 / Published: 13 February 2019
(This article belongs to the Section Urban Water Management)
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Abstract

Sediment basins are temporary practices commonly used to detain stormwater runoff and capture suspended sediment on construction sites. A 79.0 m3 (2790 ft3) sediment basin testing apparatus at the Auburn University—Erosion and Sediment Control Testing Facility was used to provide a series of controlled and repeatable, large-scale tests to understand the performance of sediment basins and provide improvements. This research evaluated five sediment basin configurations over the course of 27 individual tests, including: (1) a standard configuration, (2) the addition of an excavated sump upstream of a ditch check, (3) the modification of the first baffle, (4) a high-rate lamella settler in upward flow, and (5) a high-rate lamella settler in parallel flow. The primary metric for evaluating performance and the treatment effectiveness of a configuration’s ability in capturing sediment was assessed from turbidity measured across the basin surface. Multiple linear regression analysis indicated that an excavated sump provided insignificant improvement in sediment capture effectiveness. Furthermore, the modification to the first baffle was deemed ineffective in improving treatment efficiency. Lamella settler results indicated a 18.2% and 29.0% reduction in turbidity across the basin for upward and parallel flow configurations, respectively. View Full-Text
Keywords: construction; erosion and sediment control; lamella settler; large-scale testing; stormwater runoff; sediment basin construction; erosion and sediment control; lamella settler; large-scale testing; stormwater runoff; sediment basin
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Perez, M.A.; Zech, W.C.; Vasconcelos, J.G.; Fang, X. Large-Scale Performance Testing of Temporary Sediment Basin Treatments and High-Rate Lamella Settlers. Water 2019, 11, 316.

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