Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Nitrogen and Phosphorus Removal Characteristics from Domestic Sewage using Two Stage Membrane Bioreactor

2단형 막분리 활성슬러지법(Two Stage MBR)에서 내부순환율 변화와 응집제 첨가에 의한 질소 및 인제거 특성에 관한 연구

  • Park, Jae-Roh (Water Resources & Environmental Research Div., Korea Institute of Construction Technology) ;
  • Lim, Hyun-man (Water Resources & Environmental Research Div., Korea Institute of Construction Technology) ;
  • Kim, Eoung Ho (Dept. of Civil Eng., Hong-Ik University)
  • 박재로 (한국건설기술연구원 수자원환경연구부) ;
  • 임현만 (한국건설기술연구원 수자원환경연구부) ;
  • 김응호 (홍익대학교 토목공학과)
  • Published : 2002.06.30
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Abstract

Laboratory-scale membrane bioreactor added alum into the anaerobic basin as a flocculant and adsorbent was carried out to find removal efficient of nitrogen and phosphorus components in the mixed liquid and weather or not maintaining the stability for the permeate flux and pressure at various internal recycle conditions. It was found that denitrification efficient of maximum 65% was obtained when the ratio of internal recycle was 3Q. Additionally when the ratio of internal recycle was fixed at 3Q, $BOD_5$ and T-P concentration of permeate was much more reduced compared to not added alum in anaerobic basin but T-N concentration of permeate was relatively increased. In case of added alum as the flocculant and adsorbent in anaerobic basin, the permeate flux was maintained above $10{\ell}/m^2/hr$ but the permeate pressure was relatively higher than alum was not added in anaerobic basin.

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