Bench-scale ozonation for removing constituents of emerging concern

This study assessed the efficiencies of removing constituents of emerging concern (CECs) with ozone and ozone in combination with hydrogen peroxide in a bench-scale flow-through system designed to predict full-scale removals. Five CECs were selected for evaluation: atrazine, caffeine, carbamazepine,...

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Veröffentlicht in:Journal - American Water Works Association 2014-07, Vol.106 (7), p.E350-E361
Hauptverfasser: Liang, Sun, Maceikd, Shannon M., Takeguchi, Wade A., Yates, Richard S.
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container_end_page E361
container_issue 7
container_start_page E350
container_title Journal - American Water Works Association
container_volume 106
creator Liang, Sun
Maceikd, Shannon M.
Takeguchi, Wade A.
Yates, Richard S.
description This study assessed the efficiencies of removing constituents of emerging concern (CECs) with ozone and ozone in combination with hydrogen peroxide in a bench-scale flow-through system designed to predict full-scale removals. Five CECs were selected for evaluation: atrazine, caffeine, carbamazepine, primidone, and tris (2-chloroethyl) phosphate. Two modeling compounds, 2-methylisoborneol and geosmin, were used to establish benchscale operating conditions that mimicked previous pilot- and demonstration-scale removals. The study demonstrated that CEC removal efficiencies in bench-scale systems are generally consistent with removals in full-scale systems. Thus, the bench-scale system can be used to predict full-scale removals. Additionally, bench-scale results showed that CEC removal efficiencies were generally higher in State Project water (SPW) than in Colorado River water (CRW) or the SPW/CRW blend. These results were likely a consequence of the rapid formation of hydroxyl radicals in SPW.
doi_str_mv 10.5942/jawwa.2014.106.0063
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source Jstor Complete Legacy; Wiley Online Library Journals Frontfile Complete
subjects advanced oxidation
Atrazine
Bench Scale
Caffeine
Colorado River
constituents of emerging concern
Contaminants of Emerging Concern
drinking water
Flow system
Freshwater
Herbicides
Hydrogen peroxide
Hydroxyl radicals
Industrial effluents
Oxidation
Ozonation
Ozone
Pharmaceutical preparations
pharmaceuticals
Potable water
River water
Rivers
Surface water
Wastewater
Water quality
Water supply
title Bench-scale ozonation for removing constituents of emerging concern
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