| Autor: |
SUN LIANG, MACEIKO, SHANNON M., TAKEGUCHI, WADE A., YATES, RICHARD S. |
| Předmět: |
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| Zdroj: |
Journal: American Water Works Association; Jul2014, Vol. 106 Issue 7, pE350-E361, 12p, 1 Diagram, 8 Charts, 3 Graphs |
| Abstrakt: |
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 bench-scale 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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
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