Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
권호 표지

Biological Activated Carbon (BAC) Process in Water Treatment

정수처리에서의 생물활성탄 공정

  • 손희종 (부산시상수도사업본부 수질연구소) ;
  • 유수전 (부산시상수도사업본부 수질연구소) ;
  • 노재순 (부산시상수도사업본부 수질연구소) ;
  • 유평종 (부산시상수도사업본부 수질연구소)
  • Received : 2009.03.25
  • Accepted : 2009.04.28
  • Published : 2009.04.30
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Abstract

This review paper serves to describe the composition and activity of biological activated carbon (BAC) biofilm which is considered as a progressive process for water treatment. As well as several physical-chemical, biochemical and microbiological analysis methods for characterizing the composition and activity of BAC biofilm, the ability of the biofilm to remove and biodegrade organic matters and pollutants related to other water treatment processes such as pre-ozonation will be reviewed. In this paper, conversion of GAC into BAC, removal mechanism of pollutants, characteristics and affecting factors of BAC biofilm, and modeling of BAC are described in detail. In addition, strategies to control the growth of the BAC biofilm, such as varying the nutrient loading rate, altering the frequency of BAC filter backwashing and applying oxidative disinfection, will be dwelled on related to their respective process control challenges.

생물활성탄 공정은 정수처리에서 획기적인 공정으로 평가받고 있으며, 전 세계적으로 많은 정수장에서 BAC 공정을 채택하여 운전하고 있다. BAC 공정의 장점은 활성탄에 흡착된 오염물질들이 활성탄 표면에서 서식하고 있는 다양한 미생물 집합체(생물막)에 의해 생물분해되어 자연적으로 활성탄의 재생이 이루어져 활성탄 사용기간의 연장을 유도하여 정수처리 비용을 감소시킬 수 있다는 것이다. 또한, 유입수중의 생분해 가능한 유기물질들을 제거하여 배 급수관망에서 미생물의 재성장을 억제하는데 탁월하다. 그러나 BAC 공정의 효율이 활성탄 표면에 형성되어 있는 생물막에 의해 제한되어지는 문제점도 있다. 본 논문에서는 GAC에서 BAC로의 전환, BAC 생물막의 특성, 오염물질의 제거 메카니즘, BAC 공정에 영향을 미치는 인자들, BAC 공정의 제어 및 BAC 공정의 모델링에 대해 크게 여섯 부분으로 상세하게 기술하였다.

Keywords

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