Proceedings of the Korean Environmental Health Society Conference (한국환경보건학회:학술대회논문집)

Korean Society of Environmental Health (한국환경보건학회)
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Composting Using Food Wastes and Sewage Sludge

  • Lee, Young-Sei (School of Applied Chem. Eng., Sangju National University) ;
  • Roh, Jong-Su (Department of Environment & Bio-Engineering, Dongeui Institute of Technology) ;
  • Suh, Myung-Gyo (Department of Environment & Bio-Engineering, Dongeui Institute of Technology) ;
  • Lee, Yong-Hee (Department of Chemistry and Research Institute of Basic Science, Dongeui University) ;
  • Choi, Hyun-Kuk (School of Applied Chem. Eng., Sangju National University) ;
  • Kim, Jung-Keun (School of Applied Chem. Eng., Sangju National University)
  • Published : 2004.06.04
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Abstract

Composting experiment was conducted with the mixing ratio of food waste versus sewage sludge being respectively 10:90, 30:70, 50:50, 60:40, 70:30 and 90:10 wt%. The fermentation temperature was $18-22^{\circ}C$ in the beginning, and then it was sharply increased to $44-66^{\circ}C$ up to 1 day after fermentation, which was maintained for more than 3 days. Then, it was slowly decreased to $18-25^{\circ}C$ up to 8 days after fermentation, which was maintained all the time. In conclusion, it could be known from examination of various conditions, including reaction rate, salinity, C/N ratio, temperature, organic substance, etc. while composting of food waste that in case food waste and sewage sludge were mixed at the mixing rate of 60:40 wt%, the most ideal composting reaction occurred.

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