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KMID : 1156220040300030214
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Journal of Environmental Health Sciences
2004 Volume.30 No. 3 p.214 ~ p.220
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A Study on the Treatment of Parathion Pesticide Using Marsh and Pond Type Constructed Wetlands
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Kim Se-Kyung
Zoh Kyung-Duk
Choi Jong-Kyu
Oh Se-Hee
Kang Ho-Jeong
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Abstract
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The microcosm type wetland systems were constructed in order to treat wastewater contaminated with parathion. The microcosm reactor consisted of marsh and pond type. The experiment was carried out using batch (marsh or pond) and continuous (marsh-pond and pond-marsh type) systems. In the batch reactor, marsh-type wetland completely removed parathion in water within 8 days, while pond reactor removed 97% of parathion during the same period. During parathion degradation, the amount of 4-nitrophenol production, one of the metabolites from parathion degradation, was higher in marsh-type batch reactor. In the continuous systems, both marsh-pond and pond-marsh combination systems effectively removed parathion from water, and the production of 4-nitrophenol was also minimal. In the extraction experiment, the parathion and its metabolite were not found in the wetland soil and the plant. In order to achieve both aerobic and anaerobic conditions, the continuous wetland system combining marsh and pond type can be the alternative for the non-point source pollutants such as parathion pesticide.
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KEYWORD
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parathion, 4-nitrophenol, constructed wetland, marsh, pond
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