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DOI : , Vol.19, No.3, 21 ~ 28, 2011
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| Title |
| Effect of EBCT on Perchlorate Reduction in a Fixed Biofilm Reactor |
| 이태룡 Tae Ryong Lee , 이영도 Young Do Lee , 김홍태 Hong Tae Kim , 최혁순 Hyeok Sun Choi |
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| Abstract |
| Perchlorate contamination generates from the disposal of ammonium perchlorate(AP), a highly energetic compound produced for use in solid rocket propellant of missile. Typical water treatment technologies such as ion exchange, carbon adsorption, and air stripping seem not to be economical for perchlorate removal, which is extremely stable in water and does not react to adsorbents. Biofilm processes have been considered as a cost effective treatment for perchlorate and other anions. The purpose of this research was to investigate the optimum EBCT in a fixed biofilm reactor for destruction of perchlorate. A synthetic water containing average 277μg/L perchlorate was reduced to 40μg/L, 8μg/L, 10μg/L, and 52μg/L perchlorate at 5.4hr, 2.7hr, 1.4hr, and 0.5hr of EBCT in a fixed biofilm reactor. A fixed biofilm reactor with internal recirculation(2:1) reduced perchlorate from 277μg/L to below detection, 4μg/L, 11μg/L, and 47μg/L at 5.4hr, 2.7hr, 1.4hr, and 0.5hr EBCT. Perchlorate removal efficiencies in a plug flow biofilm reactor and internal recirculation biofilm reactor were not significantly different during this experiment. |
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| Key Words |
| perchlorate, EBCT, biofilm reactor |
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