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자외선에 의한 가축분뇨 액비 시용 논 표면수 중 대장균 사멸율 변화

Inactivation of Escherichia coli in Surface Water of Saturated Soil with the Pig Manure-based Liquid Fertilizers by Ultraviolet Radiation

  • 김민경 (국립농업과학원 농업환경부) ;
  • 정구복 (국립농업과학원 농업환경부) ;
  • 홍성창 (국립농업과학원 농업환경부) ;
  • 강성수 (국립농업과학원 농업환경부) ;
  • 권순익 (국립농업과학원 농업환경부)
  • Kim, Min-Kyeong (Department of Agricultural Environment, National Academy of Agricultural Science, RDA) ;
  • Jung, Goo-Bok (Department of Agricultural Environment, National Academy of Agricultural Science, RDA) ;
  • Hong, Seung-Chang (Department of Agricultural Environment, National Academy of Agricultural Science, RDA) ;
  • Kang, Seong-Soo (Department of Agricultural Environment, National Academy of Agricultural Science, RDA) ;
  • Kwon, Soon-Ik (Department of Agricultural Environment, National Academy of Agricultural Science, RDA)
  • 투고 : 2011.05.18
  • 심사 : 2011.06.17
  • 발행 : 2011.06.30

초록

가축분뇨 액비인 SCB 액비를 논토양 조건의 포트에 시용하였을 때 자외선에 의해 분변성 대장균의 사멸효과가 높은 것으로 나타났다. 따라서 본 연구결과로 볼 때 가축 분뇨의 퇴 액비화시 유해 미생물 제거에 광의 이용 가능성을 확인할 수 있었다. 그러나, 여러 종류의 가축분뇨 퇴 액비를 직접 농경지에 시용하였을 때 외부 환경의 건전성 유지와 환경 위해성을 관리하기 위해서는 향후 농경지 시용에 대한 현장 실험이 보완되어야 할 것이다.

Liquid manure fertilizer drived from pig slurry is a valuable source of nutrients for crop production. However, there is no study for environmental assessment regarding microbial quality to apply liquid manure fertilizer. Therefore, this study aimed at quantifying the level of environmental impact on fecal coliform (Escherichia coli or E. coli ) survival in saturated soil such as paddy field. Surface water samples were collected up to 168 and 11 hours under natural sunlight and artificial ultraviolet radiation, respectively. The inactivation rate of E. coli under natural sunlight increased gradually after 48 hours. However, the inactivation rate of E. coli under artificial ultraviolet radiation increased linearly over time. Our findings suggested that the ultraviolet radiation is the limited factor on E. coli survival in surface water of saturated soil. This result will provide useful and practical guideline to applicators of agricultural soil in deciding appropriate handling and time frames for preventing pollution of water quality for sustainable agriculture.

키워드

참고문헌

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피인용 문헌

  1. Growth Effect and Nutrient Uptake by Application Interval of Developed Slurry Composting and Biofiltration (DSCB) Liquid Fertilizer on Kentucky Bluegrass vol.3, pp.4, 2014, https://doi.org/10.5660/WTS.2014.3.4.362
  2. Minimizing Nutrient Loading from SCB Treated Paddy Rice Fields through Water Management vol.45, pp.5, 2012, https://doi.org/10.7745/KJSSF.2012.45.5.671