A Study of Sewage Treatment with a Self-Cleaning Filtration Unit

자기세정 여과 반응장치를 이용한 하수처리에 관한 연구

  • Mo, Sung-Young (Department of Environmental Engineering, Seoul National University of Science & Technology) ;
  • Lee, Pul-Eip (Department of Environmental Engineering, Seoul National University of Science & Technology) ;
  • Kim, Bum-Su (Technical Research Team of H-entech) ;
  • Lee, Tae-Jin (Department of Environmental Engineering, Seoul National University of Science & Technology)
  • 모성영 (서울과학기술대학교 환경공학과) ;
  • 이풀잎 (서울과학기술대학교 환경공학과) ;
  • 김범수 (에이치앤텍) ;
  • 이태진 (서울과학기술대학교 환경공학과)
  • Received : 2016.02.19
  • Accepted : 2016.04.18
  • Published : 2016.06.30


In this study, sewage was fed with up flow direction into a reactor equipped with a screw to circulate media that had lower specific gravity than water. It was observed that the media in the reactor could be circulated by a screw with reverse flow of the sewage feeding from the top to the bottom direction. Under these conditions, concentrations of inflow and outflow pollutants were measured at the filtration unit. Experimental results revealed stable circulation of the media with a screw in the reactor. Circulation of the media in the reactor showed more efficiency in removing the pollutants (particulate matters and organics) than no circulation. The maximum removal efficiencies of suspended solid (SS), chemical oxygen demand (CODmn), and total phosphorus (T-P) were 96%, 72% and 65%, respectively. Improvements for SS, CODmn and T-P removals with circulation of media were 52.38%, 43.14% and 118.12% respectively, compared to those without circulation.

본 연구에서는 내부에 여재순환용 스크루가 장착된 여과장치에 물보다 비중이 작은 여재를 충진한 후 오수를 상향류로 유입하였다. 반응기 내부의 여재가 스크루에 의해 상부에서 하부로 오수의 흐름에 반하여 원활히 순환되는지 확인하였으며 이 과정에서 여과장치에 의한 오염물질의 제거양상을 살펴보았다. 실험결과 내부 스크루에 의한 여재의 안정적인 순환을 확인할 수 있었으며, 여재 순환주기에 따른 오염물질의 제거효율은 순환주기가 길어질수록 여과작용이 원활히 진행되어 입자상 물질과 유기물질이 효과적으로 제거하는 것으로 나타났다. 최대 처리효율은 SS, CODmn, 그리고 T-P순으로 각각 96%, 72%, 65%를 보였으며, 이는 여재가 순환되지 않는 경우보다 각각 52.38%, 43.14%, 118.12%의 처리효율이 개선되는 효과가 있는 것으로 나타났다.



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