대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제30권5호
  • /
  • Pages.491-499
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  • 2008
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  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
권호 표지

대기노출형 백색부후균 생물막을 이용한 유기물 처리특성

Characteristics of Organics Treatment Using White-rot Fungus Biofilm of Atmospheric Exposed Type

  • Lee, Soon-Young (Jeonbuk Regional Environmental Technology Development Center) ;
  • Kang, Ki-Cheol (Department of Environmental Engineering, Chonbuk National University) ;
  • Won, Chan-Hi (Department of Environmental Engineering, Chonbuk National University)
  • 발행 : 2008.05.31
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초록

점점 더 강화되는 수질기준, 연료 및 에너지비용 증가 등으로 경제성, 소요부지의 최소화, 운전의 용이성, 슬러지 발생의 최소화, 높은 처리효율을 지니는 폐수처리시스템의 개발은 시급한 실정이다. 따라서 본 연구에서는 난분해성물질을 함유한 오 폐수에 대해 대기노출형 백색부후균 생물막을 이용하여 생물막의 침지형태, 체류시간, 재순환비, 모듈회전수에 따른 유기물 처리 특성을 연구하였다. HBC 링 여재에 부착된 백색부후균 생물막을 대기중에 완전히 노출하여 운전시 침지형 포기조건과 거의 비슷한 제거율을 나타냈다. 대기노출형의 최적조건은 HRT 3$\sim$4 hr, 재순환비 6$\sim$10 Q, 모듈회전수 0.5$\sim$2회/min이며, 이때 유기물 제거율은 COD$_{Cr}$ 65.0$\sim$69.9%, NBDCOD 70.4$\sim$72.7%, BOD$_5$ 88.8$\sim$90.1%, SS 84.2$\sim$90.4%를 나타냈다. 또한 본 연구에서 BOD$_5$의 유출수 평균농도는 8.9 mg/L로 중수도 수질기준 BOD$_5$ 10 mg/L이하를 만족하였으나, NBDCOD의 경우 평균농도가 29.6 mg/L로 중수도 수질기준 20 mg/L보다 높은 것으로 나타났다.

It is really urgent to develop wastewater treatment system which is economically efficient, occupies small area for buildup, can be easily operated, discharges small amount of sludge due to the more strict water quality standard, the expensive water and energy cost and so on. This study on treatment of wastewater including nonbiodegadable materials using white-rot fungus biofilm were designed to investigate the submerged type of biofilm, hydraulic retention times, recycle rates, and module turning times. Removal efficiencies of fully exposed biofilm type in atmosphere are similar to submerged biofilm of aeration type. The optimum conditions of white-rot fungus biofilm of fully exposed type in atmosphere are HRT 3$\sim$4 hr, recycle rate 6$\sim$10 Q, module turning times 0.5$\sim$2 times/min. At this time, removal efficiencies of organics were COD$_{Cr}$ 65.0$\sim$69.9%, NBDCOD 70.4$\sim$72.7%, BOD$_5$ 88.8$\sim$90.1%, SS 84.2$\sim$90.4%. Moreover average effluent concentration of BOD$_5$(8.9 mg/L) satisfied water quality standard of heavy water(BOD$_5$ less than 10 mg/L) but concentration of NBDCOD(29.6 mg/L) was higher than water quality standard of heavy water(NBDCOD less than 20 mg/L).

키워드

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