| Abstract |
| Due to the rapid changes in the environment by climate change, algae in water supply becomes unpredictable so that there are concerns and worries about the occurrence of taste and order problems in tap water and in the recent winter, concentration of Geosmin was unusually detected up to 1,640 ng/L in Bukhan River. The treatment with Peroxone+GAC(granular activated carbon) process was implemented to reliably remove Geosmin and 2-MIB in a low temperature and a high concentration in this study and the result showed that the treatment efficiency of 2-MIB was observed relatively lower than Geosmin in terms of all ozone injection concentrations and H₂O₂/O₃ molar ratio in a low temperature condition, 5 ℃ and a high temperature condition, 25 ℃. In the GAC process, more than 99% of 2-MIB and Geosmin were removed under the condition of 25 ℃ which is a high water temperature and in case of the water temperature 5 ℃, both 2-MIB and Geosmin in the processed water were removed below the reference value of 20 ng/L. In the Peroxone process, the treatment of Geosmin and 2-MIB in a low temperature was very easy to process. In addition, overall, when the inflow concentration of Geosmin and 2-MIB increases, treatment efficiency showed a tendency to decrease. After adding NaOH, the treatment efficiency was very good in the GAC process which is a post-process and when a higher concentration of NaOH is applied, the treatment of residual ozone was decreased at both 5 ℃ and 15 ℃ of water temperatures. |
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| Key Words |
| Geosmin, 2-MIB, Peroxone, GAC, NaOH |
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