Removal of Nutrients Using an Upflow Septic Tank(UST) - Aerobic Filter(AF) System

부패조와 호기성 여과공정을 이용한 영양염류 제거

  • Park, Sang-Min (Water Environmental Engineering Research Division, National Institute of Environmental Research) ;
  • Jun, Hang-Bae (Department of Environmental Engineering, Chungbuk National University) ;
  • Bae, Jong-Hun (Department of Environmental Engineering, Chungbuk National University) ;
  • Park, Woo-Kyun (Climate Change and Agroecology Division, National Academy of Agricultural Science) ;
  • Park, Noh-Back (Climate Change and Agroecology Division, National Academy of Agricultural Science)
  • 박상민 (국립환경과학원) ;
  • 전항배 (충북대학교 환경공학과) ;
  • 배종훈 (충북대학교 환경공학과) ;
  • 박우균 (농촌진흥청 국립농업과학원) ;
  • 박노백 (농촌진흥청 국립농업과학원)
  • Received : 2010.08.27
  • Accepted : 2010.09.24
  • Published : 2010.09.30


The objective of this study was to investigate a small sewage treatment system. This system was developed to improve a nitrogen and phosphorus removal efficiency and generate less solid using upflow septic tank(UST) - aerobic filter(AF) system. The UST equipped with an aerobic filter, the filter was fed with both raw sewage and recycled effluent from the UST to induce the denitrification and solid reduction simultaneously. Overall removal efficiencies of COD and total nitrogen(TN) were above 96% and 73% at recycle ratio of 200%, respectively. Critical coagulant dose without the biochemical activity was found to be 40 mg/L. Removal efficiency of total phosphorus(TP) in influent was above 90% by chemical and biological reactions. Although the phosphorus concentration was low under the high alkalinity in raw sewage, the pH value was unchanged by the coagulant dose.


Anaerobic septic tank;Biofiltration system;Coagulant dose;Nutrient removal


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