CTB를 이용한 단일 생물반응기에서의 유체 거동 고찰

Investigation of Flow Distribution in One Stage Bioreactor with CTB(Cone Type Baffle)

  • 박종훈 (한국과학기술연구원 수질환경 및 복원연구센터) ;
  • 김승준 (한국과학기술연구원 수질환경 및 복원연구센터) ;
  • 최용수 (한국과학기술연구원 수질환경 및 복원연구센터) ;
  • 이상협 (한국과학기술연구원 수질환경 및 복원연구센터) ;
  • 홍석원 (한국과학기술연구원 수질환경 및 복원연구센터) ;
  • 강선홍 (광운대학교 환경공학과)
  • 투고 : 2006.09.26
  • 심사 : 2007.01.03
  • 발행 : 2007.02.15

초록

In this study, the cone type baffle (CTB) was developed to improve the flow distribution in an upflow bioreactor. It was composed of two different zones (anoxic and oxic) by inserting the CTB in the middle of the bioreactor. Based on the results of the dye tracer tests, hydraulic retention time (HRT) for the anoxic, oxic and total volume of the bioreactor was found to be 0.998, 1.996 and 2.994 hr, respectively. And the theoretical HRT for each volume was 1.0, 2.0 and 3.0 hr, respectively. The values of HRT obtained from the tests coincide with theoretical values. Therefore, the flow pattern for each zone inside the bioreactor, which was divided by the CTB, was dominated by complete mix flow rather than plug flow. Based on the results of the transection measurements, the DO concentration for each zone inside the bioreactor was clearly distinguished. Consequently, the CTB played an important role in the separation of anoxic and oxic zones. Also, the each pollutans were reduced gradually along the height in the oxic zone. The reason is that the biomass in the media layer (Port 4 and 5) was higher than that in the mixed liquor layer without the media (Port 2 and 3).

키워드

참고문헌

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