Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 409, Issue 6, Pages 1087-1094Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2010.11.021
Keywords
Contaminants of emerging concern; Managed aquifer recharge; Surface spreading; Soil aquifer treatment; Indirect potable reuse
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Funding
- WateReuse Research Foundation
- Water Replenishment District (WRD) of Southern California
- County Sanitation District of Los Angeles County (CSDLAC)
- Edna Bailey Sussman Foundation
- Advanced Water Technology Center (AQWATEC) at the Colorado School of Mines (CSM)
- Water Replenishment District of Southern California (WRD)
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The attenuation of a diverse suite of contaminants of emerging concern (CECs) and bulk water quality changes was evaluated at a surface-spreading aquifer recharge operation across a detailed subsurface profile (9 locations), representing both short- and long-travel times (10 h to 60 days). Seventeen CECs were detected in the recharge basin and the concentrations of all were reduced during soil aquifer treatment (SAT), with 11 of the target compounds attenuated by >80% after 60 days of travel time. Select CECs (atenolol, gemfibrozil, N,N-diethly-3-methylbenzamide, meprobamate, tris(2-chloroethyl)phosphate, and primidone) and bulk water organic-carbon measurements (total organic carbon, biodegradable organic carbon, size-exclusion chromatography and fluorescence excitation-emission matrices) were identified as monitoring parameters that can be used to assess SAT performance at surface-spreading operations. (C) 2010 Elsevier B.V. All rights reserved.
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