Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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The Effect of Yeast(Saccharomyces exiguus SJPAF1) on Odor Emission and Contaminants Reduction in Piggery Slurry

효모(Saccharomyces exiguus SJPAF1) 첨가에 따른 돈분뇨의 악취제거 및 오염물질 감소 효과

  • Yoon, Deok-Hoon (Department of Horticulture, Hankyong National University) ;
  • Kang, Dong-Woo (Department of Horticulture, Hankyong National University) ;
  • Nam, Ki-Woong (Department of Horticulture, Hankyong National University)
  • 윤덕훈 (국립한경대학교 원예학과) ;
  • 강동우 (국립한경대학교 원예학과) ;
  • 남기웅 (국립한경대학교 원예학과)
  • Published : 2009.03.31
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Abstract

The aim of this study was to evaluate the effect of yeast(Saccharomyces exiguus SJPAF1, referred to as SA) addition on odor emission and contaminants reduction in piggery sluny. Four different rates of yeast addition were compared: no addition(SA0), 0.7L(SA0.7), 1.0L(SA1.0), and 1.5L(SA1.5) to one tone of piggery slurry. Odor emission tended to decrease with increasing the yeast application with concurrent effects of changes in temperature on outside of reactors. Particularly, reduction in ammonia emission was proportional to the yeast application rate; it reduced from 161.1 ppm in SA0 to 47.1 ppm in SA1.5 after 6 days of treatment Decomposition of piggery shiny by yeast increased to 13.8% more in SA1.5, and total amounts of piggery slurry decreased to 12.5% in SA1.5. Total coliforms were detected below 30MPN $ml^{-1}$ in SA1.5, while $8.3{\times}10^3$ MPN $ml^{-1}$ of Total coliforms were found in SA0. However, the effect of yeast addition in piggery slurry seemed to have no influence on the removal efficiency of contaminants such as BOD, COD, $NO_3^{-}-N$, $NH_4^{+}-N$, $PO_4^{-}P$. Consequently, the yeast(Saccharomyces exiguus SJPAF1) addition of 1.5% in the piggery sluny seems to have potential applicability for improving agent of pig-farm environment.

본 실험은 효모(Saccharomyces exiguus SJPAF1) 첨가에 따른 돈분뇨의 악취제거 및 오염물질 감소 효과를 알아보고자 수행하였다. 처리구는 효모무 처리(SA0), 돈분노 1톤당 0.7 l(SA0.7), 1.0 l(SA1.0), 1.5 l(SA1.5)로 구분하였다. 돈 분뇨에서 발생하는 복합악취강도는 폭기조 외부의 온도변화와 효모의 투입향 증가에 따라 감소한 경향을 보였으며, 특히 암모니아 가스는 처리 6일 후 SA0에서 161.1 ppm인 반면 SA1.5에서는 47.1 ppm수준이었다. 또한 돈분뇨의 액상화는 SA1.5에서는 시험전 대비 13.8%가 증가하였으며, 분뇨량은 12.8%, 감소하였다. 가축분뇨 중의 주요 병원균인 대장균은 효모처리구인 SA0.7과 SA1.5에서 시험전 수준인 30MP N $ml^{-1}$미만을 유지하여 더 이상 증식되지 않았다. 그러나, 오염물질인 BOD, COD, 및 $NO_3^{-}-N$, $NH_4^{+}-N$, $PO_4-P$의 일부 감소는 공시효모에 의한 효과가 아닌 것으로 판단된다. 본 연구 결과, 효모(Saccharomyces exiguus SJPAF1) 1.5%를 돈 분뇨에 첨가시 악취의 제거와 대장균의 증식을 억제시켜 환경개선제로서의 이용 가능성을 보여주었다.

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