생명과학회지 (Journal of Life Science)

  • 제10권1호
  • /
  • Pages.14-21
  • /
  • 2000
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
권호 표지

음용수로부터 동화성 유기물질의 제거를 위한 생물학적 공정개발

Development of biological processes for the removal of assimilable organic carbon from potable water

  • 이민규 (부경대학교 공과대학 화학공학부) ;
  • 감상규 (제주대학교 해양과학대학 환경공학과)
  • 발행 : 2000.02.01
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초록

음요수 중의 유기탄소의 제거수단으로써 biofiltration법의 타당성을 검토하였다.NOM에서의 생분해 가능한 분율을 알아보기위하여 행하여 졌다. UV 조사량을 3가지로 달리하였을 경우에 회분식에서의 생분해능과 비교하였다. 생물여과 반응기 실험의 경우에 생분해 특성을 검토한 결과 EBCT, 순환비 및 유입농도등과 같은 운전피라미터들이 생물여과 반응기의 생분해능에 영향을 미침을 알 수있었다. 생물여과 반응기의 유출수에서의 UV/DOC의 비는 반응기에 공급되는 원료중의 UV/DOC비에 비해 증가하였으며, 이로부터 생분해에 의해 저거된 DOC는 UV에 의해 그다지 흡수되지 않는 물질임을 알 수있었다. 본 여눅를 통해 생분해 가능한 DOC의 부분을 제거하는데 있어서 생물여과공법이 효과적인 방법이라는 것을 알수있었으며 UV처리와 bilfiltration을 연계한 공정은 수처리 시설에서 유출수의 DOC농도는 낮추는데 효과적인 한가지 방안으로 사료되었다.

The experiments were performed using both batch and continuous column reactors. Batch biodegradation studies were performed under aerobic conditions to determine the biodegradable fraction of the natural organic matter (NOM) source. NOM source was evaluated for its biodegradability at three different UV irradiation conditions and compared to its biodegradability without UV irradiation. In continuous experiments, system operating parameters of empty bed contact time (EBCT), recycle ratio, and influent concentration affected the extent of biofiltration in the biofilters. The effluent UV254/DOC ratios fro the biologically active columns were consistently lower than the influent values, which indicated that the dissolved organic carbon (DOC) removed by biodegradation was not a significant part of the UV-absorbable material. The increase in UV254/DOC ratio was caused by the DOC decrease across the biofilter because there was essentially no difference between the feed and effluent UV254 absorbance values over time. The results of this research showed that biofiltration was an effective method for removing the biodegradable fraction of NOM from water supplies.

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