Influence of Aeration Cycle on Nitrogen and Phosphorus Removal in Two-Stage Intermittent Aeration System

2단 간헐폭기 시스템에서 aeration cycle이 질소 및 인 제거에 미치는 영향

  • 정명선 (강원대학교 대학원 환경공학과) ;
  • 이준호 (강원대학교 대학원 환경공학과) ;
  • 서광범 (강원대학교 대학원 환경공학과) ;
  • 김영관 (강원대학교 환경공학과)
  • Published : 2003.08.31

Abstract

This bench-scale research investigated the aeration cycle(on/off) as the controlling factors for nitrogen and phosphorus removal in a 2-stage, intermittent aeration process. At this experiment, the aeration cycle time(air-on/air-off) was 30min/30min, 60min/60min, 90min/90min. Organic matter removal was observed more than 90% regardless of the aeration cycle and phosphorus removal was relatively high when the aeration cycle time was 60min/60min On the other hand. For all of the aeration cycle, TN removal was appeared less than 55%. This result was probably due to the limitation of the external substrate for heterotrophic nitrification and aerobic denitrification.

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