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A Study on VS Removal Efficiency and Methane Emission in Combined Anaerobic Digestion of Livestock Manure and Food Waste

가축분뇨 및 음식물쓰레기의 혐기성 소화 병합처리 시 VS 제거효율과 메탄 발생량의 관한 연구

  • Choi, Young-Ik (Department of Environmental Engineering, Dong-A University) ;
  • Ji, Hyeon-Jo (Department of Environmental Engineering, Dong-A University) ;
  • Jung, Jin-Hee (Department of Environmental Engineering, Dong-A University) ;
  • Jung, Byung-Gil (Department of Environmental Engineering, Dong-Eui University) ;
  • Kim, Jung-Geon (Department of Environmental Engineering, Dong-Eui University)
  • 최영익 (동아대학교 환경공학과) ;
  • 지현조 (동아대학교 환경공학과) ;
  • 정진희 (동아대학교 환경공학과) ;
  • 정병길 (동의대학교 환경공학과) ;
  • 김정권 (동의대학교 환경공학과)
  • Received : 2018.03.27
  • Accepted : 2018.05.15
  • Published : 2018.09.30

Abstract

Livestock manure treatments have become a more serious problem because massive environmental pollutions such as green and red tides caused by non-point pollution sources from livestock manures have emerged as a serious social issue. In addition, more food wastes are being produced due to population growth and increased income level. Since the London Convention has banned the ocean dumping of wastes, some other waste treatment methods for land disposal had to be developed and applied. At the same time, researches have been conducted to develop alternative energy sources from various types of wastes. As a result, anaerobic digestion as a waste treatment method has become an attractive solution. In this study has three objectives: first, to identify the physical properties of the mixture of livestock wastewater and food waste when combining food waste treatment with the conventional livestock manure treatment based on anaerobic mesophilic digestion; second, to find the ideal ratio of waste mixture that could maximize the collection efficiency of methane ($CH_4$) from the anaerobic digestion process; and third, to promote $CH_4$ production by comparing the biodegradability. As a result of comparing the reactors R1, R2, and R3, each containing a mixture of food waste and livestock manure at the ratio of 5:5, 7:3, and 3:7, respectively, R2 showed the optimum treatment efficiencies for the removal of Total Solids (TS) and Volatile Solids (VS), $CH_4$ production, and biodegradability.

Keywords

Anaerobic Digestion;Livestock Manure;Food Waste;Combined Treatment;$CH_4$

Acknowledgement

Supported by : 한국과학창의재단

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