Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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A Study on Bioremediation of Fish Farm Sediment Using CaO2 by Enhancement of Indigenous Microbial Activity

어류양식장 저질개선을 위한 과산화칼슘 투입에 의한 생태 환경변화 관찰

  • Cho, Daechul (Department of Energy & Environmental Engineering, Soonchunhyang University) ;
  • Bae, Hwan-Jin (Department of Marine Environmental Engineering, Gyeongsang National University, Institute of Marine industry) ;
  • Kwon, Sung-Hyun (Department of Marine Environmental Engineering, Gyeongsang National University, Institute of Marine industry)
  • 조대철 (순천향대학교 에너지환경공학과) ;
  • 배환진 (경상대학교 해양과학대학 해양환경공학과 해양산업연구소) ;
  • 권성현 (경상대학교 해양과학대학 해양환경공학과 해양산업연구소)
  • Received : 2012.05.11
  • Accepted : 2012.08.07
  • Published : 2012.10.31
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Abstract

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 $CaO_2$ on them were overwhelming (50% or more) meanwhile that of the microbial agent on them was less than 20%. Also, $CaO_2$ 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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References

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