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KMID : 1024520120210101187
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Journal of the Environmental Sciences
2012 Volume.21 No. 10 p.1187 ~ p.1193
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A Study on Bioremediation of Fish Farm Sediment Using CaO2 by Enhancement of Indigenous Microbial Activity
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Cho Dae-Chul
Bae Hwan-Jin
Kwon Sung-Hyun
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Abstract
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The aim of this research is to enhance the bottom environment of Geoje fish farm that has been severely contaminated.
Treatment of microbial agent and/or calcium oxide significantly changed that environment: in ignition loss, either treatment
(25% or 21%)showed better than mixed treatment (13.2%). In COD, the oxygen releasing agent or mixed treatment reduced
the index by more than 20%. In T-P and T-N, the effects of CaO2 on them were overwhelming (50% or more) meanwhile
that of the microbial agent on them was less than 20%. Also, CaO2 influenced on the microbial flora: Desulfobvibrio
thermophilus, a sulfate reducing bacterium decreased in number, considering the increase of pH and rise of redox potential.
In contrast, Pseudomonas sp., Pseudoalteromonas sp., Pseudomonas aeruginosa were remarkably dominant over other
species with mixed treatment as a PCA analysis confirmed it.
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KEYWORD
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Microbial agent, CaO2, Bioremediation, Sediment, Oxidation reduction potential
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