음식폐기물의 에너지 자원화를 위한 건식혐기분해 (Dry Anaerobic Digestion of Domestic Food Waste for Energy)

서지정보

· 발행기관 : 한국환경기술학회
· 수록지 정보 : 한국환경기술학회지 / 13권 / 1호 / 30 ~ 36페이지
· 저자명 : 오준성, 김성대, 최재훈, 송성훈, 문태화, 이선희

초록

음식폐기물로부터 연중 고농도의 CH_4을 함유하는 바이오가스를 발생시키기 위하여 L×W×H=900× 2,000×2,100(mm) 규격의 건식혐기분해가스화실을 제작하였으며 수분량을 낮추기 위한 수분조절제 등을 혼합시켜 건식혐기분해가스화실험을 수행하였다. 8개의 건식혐기분해가스화실에 8일 간격으로 음식폐기물을 투입하여 각각 64일간 체류시키므로서 5개의 건식혐기분해가스화실에서 연중 CH_4농도 50%이상과 가스발생량 1㎥/㎥․d(혼합음식폐기물 1㎥에서 바이오가스발생량 1㎥/d)이상을 유지하는 건식혐기분해가스화실은 5개실로 조사되었다.

영어초록

In order to produce biogas from domestic food waste were installed dry anaerobic digestion chambers of the size L×W×H=900×2,000×2,100(mm). High moisture of the food waste was reduced with mixing of dry biodegradable matters and the mixed food waste was digested at the keeping temperature 30℃, 40℃ and 50℃ in the chambers. The following result were obtained for year-round biogas production from the food waste :◦ The 3 biodegradable matters : dry dead leaves, rice chaff and wood sawdust were suitable as a moisture reducing matter of domestic food waste.
◦ The highest CH_4 concentration 58% of biogas was measured each after 40 and 52 storage days at keeping temperature 50℃ and 40℃.
◦ Under the operating condition of keeping temperature 40℃ and storage time 64 days was obtained the year-round CH_4 concentration over 50% and biogas volume over 1㎥/d from mixed food waste 1㎥ at the 5 chambers of 8 dry anaerobic digestion chambers.

참고자료

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