Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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A Study on the Odor Characteristics and Identification of Microbial in Biological Swine Manure Treatment Process by Bioreactor

생물반응기를 도입한 돈분뇨의 생물학적 처리공정에서 악취발생 특성 및 미생물동정에 관한 연구

  • Ko, Joon-il (Department of Environment and Energy Engineering, Chonnam National University) ;
  • Park, Gui-hwan (Jeollanam-do Institute of Health and Environment) ;
  • Bae, Ju-soon (Jeollanam-do Institute of Health and Environment) ;
  • Oh, Gil-young (Jeollanam-do Institute of Health and Environment) ;
  • Chung, Seon-yong (Department of Environment and Energy Engineering, Chonnam National University)
  • 고준일 (전남대학교 환경에너지공학과) ;
  • 박귀환 (전라남도 보건환경연구원) ;
  • 배주순 (전라남도 보건환경연구원) ;
  • 오길영 (전라남도 보건환경연구원) ;
  • 정선용 (전남대학교 환경에너지공학과)
  • Received : 2015.06.04
  • Accepted : 2015.09.28
  • Published : 2015.09.30
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Abstract

A bioreactor filling with pellets and stones was equipped to the swine manure treatment system, which is expected to emit high concentration of odor in the process of the organic wastewater treatment system, and in comparison with the activated sludge process as the control process, the reactor operation state, treatment water quality and odor emission concentration were measured. The reactor using the bioreactor proved to be much more stable in the bubble condition, treatment water transparency, etc, and BOD removal efficiency was also much better. The removal efficiency of T-N and T-P, however, showed little difference in the two reactors. Odor, as a result of examining $NH_3-N$, $NH_3$ concentratio, and complex odor, was 4 times to 24 times less emitted in the system using bioreactor than in the activated sludge system. $H_2S$, methyl mercaptan, dimethyl sulfide, and dimethyl disulfide were not found or were found in only 5 ppbs in each reactor and showed little difference between the two reactors. In the bioreactor process, Bacillus sp./ Pseudomonas sp. species were mainly found and in the activated sludge process, acterium sp. Chryseobacterium sp. species were mainly found.

유기성폐수 처리공정에서 악취발생농도가 높을 것으로 예상되는 양돈분뇨 처리공정에 pellet과 stone을 충진한 생물 반응기를 도입하고 대조시설로서 생물반응기를 도입하지 않는 활성슬러지법 공정과 비교하여 반응조 운전상태, 처리수질, 악취발생농도를 측정하였다. 거품발생, 처리수 투시도 등에서 생물반응기를 도입한 반응조가 훨씬 안정적인 모습을 보였으며 BOD 제거효율도 우수하였다. 반면, 총질소(T-N), 총인(T-P) 제거효율은 두 개의 반응조가 큰 차이를 보이지 않아 방류수 수질기준을 만족시키기 위해서는 별도의 고도처리를 하여야 할 것으로 나타났다. 악취는 암모니아성 질소, 암모니아 농도, 복합악취를 기준으로 살펴본 결과 생물반응기를 도입한 공정이 활성슬러지 공정보다 적게는 4배에서 최대 24배 이상 낮게 나타나 악취원인물질 발생이 적은 것으로 나타났다. 황화수소, 메틸머캅탄, 디메틸설파이드, 디메틸디설파이드 농도는 각각의 반응조 모두 검출되지 않거나 5 ppb에 불과하였으며 두 반응조의 차이 또한 크지 않는 것으로 나타났다. 생물반응기 공정에서는 주로 Bacillus sp./ Pseudomonas sp. 종이 주를 이루고 활성슬러지 공정에서는 Bacterium sp. Chryseobacterium sp. 종이 주를 이루었다.

Keywords

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