Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Simultaneous Nitrification and Dennrincation of Recirculating Aquaculture Water by Biofilter Reactor

생물막 여과 반응기를 이용한 양어장 순환수의 동시 질산화 및 탈질산화 반응

  • Lee, Min-Gyu (Dept.of Chemical Engineering, Pukyong National University) ;
  • Suh, Kuen-Hack (Dept.of Chemical Engineering, Pukyong National University) ;
  • Oh, Yung-Hee (Dept. of Chemistry, Dongeui University)
  • Published : 1997.08.01
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Abstract

In order to Investigate the possibility as a simple technique of wastewater treatment for recirculating aquaculture system, the experiment by a biofilter unfit was carried out. The high and stable removal efficiency of nitrogen could be obtained by selecting the optimum recycle ratio and DO concentration. It was found that the proper combination of nitrifacation and denitrfication step in the reactor would be required for increasing the removal efficiency. The extent of nitrogen removal gradually decreased UO the rise of re- cycle ratio since the depression of denitrificatlon by the lack of hydrogen donor. The depression of nitrogen removal was overcome by increasing the CIN ratio In the wastewater. The extent of phosphorus removal was increased slightly with the increase of DO concentration and recycle ratio, but high removal efficiency was not observed. However, the extent of COD removal was not affected by recycle ratio and DO concentration and showed the stable removal of above 90%.

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References

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