Journal of Life Science

Korean Society of Life Science (한국생명과학회)
권호 표지

Simultaneous Nitrification and Denitrification by Anaerobic-Aerobic Biological Packed Bed Process

  • Lee, Min-Gye (Corresponding author, Division of Chemical Engineering, Pukyong National Unviersity, Pusan 608-739) ;
  • Ju, Chang-Sik (Division of Chemical Engineering, Pukyong National Unviersity, Pusan 608-739) ;
  • Lee, Byung-Hyun (Division of Environmental Engineering, Pukyong National Unviersity, Pusan 608-739) ;
  • Kim, Jung-Kyun (Division of Biochemical Engineering, Pukyong National Unviersity, Pusan 608-739) ;
  • Tadashi Hano (Department of Applied Chemistry, Oita University, Oita 870-11, Japan)
  • Published : 1999.10.01

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Abstract

In the wastewater treatment experiment by anaerobic-aerobic packed bed unit, it was found that the high and stable removal efficiency of nitrogen could be obtained. The extent of nitrogen removal gradually decreased with the rise of recycle ratio and DO concentration. On the other hand, the extent of phosphorus increased with the increase of DO concentration. COD showed high removal efficiency over the entire range tested. The simulation of T-N behavior was carried out satisfactorily by using the kinetic equations for biofilm and the reactor model which considered the packed bed as a plug flow reactor.

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