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자료유형
학술저널
저자정보
이병헌 (부경대학교) 송근영 (부경대학교 환경공학과) 빈정인 (부경대학교 환경공학과)
저널정보
한국수처리학회 한국수처리학회지 한국수처리학회지 제23권 제6호
발행연도
2015.1
수록면
33 - 41 (9page)

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Since 2014 in Korea ocean dumping was banned, and the treatment of organic waste on land emerged as one of the social problems. The pretreatment methods for anaerobic digestion such as ultrasonication, heat, acid, and base has been widely used to enhance solubilization and methane production. Ultrasonication studies were conducted to evaluate characteristics and solubilization of food waste (FW) and sewage sludge waste (SW) in three experimental parameters: ultrasonication time (min), power density (W/mL), and mixing ratio (% FW/SW). There was no significant change in TCOD, TS, and VS after ultrasonication, while SCOD was increased by an average of 12.9 %. It was because ultrasonic pretreatment allowed to solubilize the particulate matter. The highest SCOD increase rate of 26.1 % and the maximum SCOD increase of 5,589 mg/L was observed in the case 7 (10 min, 1.0 W/mL, 0 % FW/SW) and case 14 (16 min, 1.6 W/mL, 83 % FW/SW), respectively. The average solubilization rate was 19.0 %, and the highest solubilization rate of 37.5 % was achieved in the case 15 (19 min, 1.0 W/mL, 50 % FW/SW). The solubilization rate was increased with increasing ultrasonication time and mixing ratio. Food waste is expected to be effectively treated by the anaerobic digestion combined ultrasonic pretreatment.

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