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http://dx.doi.org/10.11001/jksww.2019.33.6.447

The effect of iron ions on the reducing of natural organic matter and THMFP in ozonation  

Kwak, Yeonwoo (Department of Chemical Engineering, Soongsil University)
Lee, Seulki (Department of Chemical Engineering, Soongsil University)
Jang, Gyuhwan (Department of Chemical Engineering, Soongsil University)
Hong, Seongho (Department of Chemical Engineering, Soongsil University)
Publication Information
Journal of Korean Society of Water and Wastewater / v.33, no.6, 2019 , pp. 447-456 More about this Journal
Abstract
This study focused on natural organic matter and trihalomethane removal by ozonation with various ferrous concentration in surface water. Ozonation is more affected by injection concentration than reaction time. dissolved organic carbon removal rates in ozonation increased with the increase in ferrous concentration. The highest removal was obtained at 6 mg/L of ferrous concentration. When 1 mg/L of ferrous was added with 2 mg/L of ozone concentration, it was found to be a rapid decrease in specific ultraviolet absorbance at the beginning of the reaction because ferrous acts as a catalyst for producing hydroxyl radical in ozonation. As ozone concentration increased, trihalomethane formation potential decreased. When 2 mg/L of ozone was injected, trihalomethane formation potential was shown to decrease and then increase again with the increase in ferrous concentration.
Keywords
Ferrous; Molecular size distribution; Natural organic matter; Ozonation; Trihalomethane formation potential;
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