Proceedings of the Korean Environmental Health Society Conference (한국환경보건학회:학술대회논문집)
- 2004.06a
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- Pages.160-164
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- 2004
Treatment of TNT and Parathion Using Constructed Wetland Microcosms
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Choi, Jong-Kyu
(Department of Environmental Health, Graduate School of Public Health, Seoul National University) ;
- Kim, Se-Kyung (Department of Environmental Health, Graduate School of Public Health, Seoul National University) ;
- Oh, Se-Hee (Department of Environmental Health, Graduate School of Public Health, Seoul National University) ;
- Lee, Eun-Sook (Department of Environmental Health, Graduate School of Public Health, Seoul National University) ;
- Zoh, Kyung-Duk (Department of Environmental Health, Graduate School of Public Health, Seoul National University)
- Published : 2004.06.04
Abstract
This study was carried out to investigate the removal of TNT (2,4,6-trinitrotoluene) and parathion in the batch and the continuous constructed wetland microcosms consisting of marsh and pond. The batch system study showed that TNT was almost reduced in the marsh and pond system within 20 days and parathion was within 8 days. The major reductive metabolites of TNT includes 2,4-diamino-6-nitrotoluene (24DANT) >2,6-diamino-4-nitrotoluene (26DANT) >4-diamino-2,6-nitrotoluene(4ADNT) > 2-diamino-4,6-nitrotoluene (2ADNT), and the concentrations of these metabolites were decreased during further operation. The generation rates of 4-nitrophenol, the major metabolite of parathion, were 82% and 15% in the bottom of marsh and pond system, respectively. In the continuous system study, although TNT/parathion degradation pattern was similar to the batch's, marsh-pond system showed the most stable TNT/ parathion removal among various continuous reactor combinations.
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