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어류양식장 저질개선을 위한 과산화칼슘 투입에 의한 생태 환경변화 관찰A Study on Bioremediation of Fish Farm Sediment Using CaO2 by Enhancement of Indigenous Microbial Activity

Other Titles
A Study on Bioremediation of Fish Farm Sediment Using CaO2 by Enhancement of Indigenous Microbial Activity
Authors
조대철권성현배환진
Issue Date
2012
Publisher
한국환경과학회
Keywords
Microbial agent; CaO2; Bioremediation; Sediment; Oxidation reduction potential
Citation
한국환경과학회지, v.21, no.10, pp.1187 - 1193
Journal Title
한국환경과학회지
Volume
21
Number
10
Start Page
1187
End Page
1193
URI
https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/15602
DOI
10.5322/JES.2012.21.10.1187
ISSN
1225-4517
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 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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