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음식물찌꺼기 고온산발효산물과 하수슬러지의 혼합처리 KCI 등재

Co-digestion of Thermophilic Acid-fermented Food Wastes and Sewage Sludge

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한국환경과학회지 (Journal of Environmental Science International)
한국환경과학회 (The Korean Environmental Sciences Society)
초록

This study has been conducted to investigate biodegradation characteristics and optimum mixing ratio for co-digestion with thermophilic acid-fermented food waste and sewage sludge using batch anaerobic digester. As the basis operating conditions for anaerobic digestion, the reaction temperature was controlled 35±1℃ and stirrer was set 70rpm. Thermophilic acid-fermented food waste and sewage sludge were mixed at the ratio of 10:0, 7:3, 5:5, 3:7, 0:10 and 5;5(food waste : sewage sludge) as the influent substrates. In results of co-digestion according to mixing ratio of thermophilic fermented food wastes and sewage sludge in batch mesophilic anaerobic digestion reactor, 385mL CH4/g VSadded of methane production rate at 1:1 mixing ratio was more than that of any other mixing ratios. Compared with 293mL CH4/g VSadded of methane production rate at 1:1 mixing ratio of food wastes and sewage sludge, pretreatment of food wastes by thermophilic acid fermentation was more effective in co-digestion with sewage sludge.

저자
  • 안철우(국립공원관리공단 환경팀) | Chul Woo Ahn
  • 장성호(부산대학교 지역환경시스템공학) | Seong Ho Jang Corresponding Author
  • 박진식(경운대학교 보건환경) | Jin Sik Park