혐기성소화슬러지의 탈수성에 온도가 미치는 영향 = Effect of Temperature on Dewatering Characteristics of Anaerobic Digested Sludge

다국어 초록 (Multilingual Abstract)

Two Anaerobic Digesters were operated for a Study on the "Effect of Temperature on Dewatering Characteristics of Anaerobic Digested Sludge".
Artificial substrate which include a lot of settleable organic solids and which can maintain the uniformity of particle size and constituents was used as a feed sludge. Design feed rate was 1.8kg/m3/day of TS or 1.5kg/m3/day of VS with a detention time of 20days.
When the reaction was at a steady state, digestion chatacteristics and specific restsrance of digested sludge were andlysed. In general, the sludge properties and the amount of gas production were nearly constant without regard to temperature variation. But the settled sledge volume was decreased according to the increase of temperature. At 55℃-digestion, ultimate settled sludge volume was only 40% of 35℃. And at the initial stage of linear phase, the settling velocity of 55℃-digested sludge was faster about 6 times than 35℃.
As the increase of digestion temperature, the dewatering characteristics was improved. The dewater ability of 55℃-digested sludge without conditioning was better about 2 times than 35℃. and about 6 times of 45% FeCl3.
The specific resistance reduction rate according to increase of FeCl3 contents at 55℃-digestion wart greater 1.6.
The COD of filtrate was similar on the whole digestion temperature.

목차 (Table of Contents)

• ABSTRACT
• Ⅰ.서론
• Ⅱ.문헌고찰
• Ⅱ-1.혐기성소화
• Ⅱ-1-1.소화개요
• Ⅱ-1-2.혐기성소화의 장ㆍ단점
• Ⅱ-1-3.혐기성반응 및 미생뭍
• Ⅱ-1-4.온도의 영향
• Ⅱ-1-5.혐기성소화의 기타 주요인자
• Ⅱ-2.탈수
• Ⅱ-2-1.공정개요
• Ⅱ-2-2.탈수이론
• Ⅱ-2-3.슬러지 탈수성에 미치는 영향인자
• Ⅱ-2-4.탈수성의 측정
• Ⅲ.실험장치 및 방법
• Ⅲ-1.혐기성소화조
• Ⅲ-2.Buchner Funnel System
• Ⅲ-3.기질
• Ⅲ-4.소화조의 운전
• Ⅲ-5.여과비저항의 측정
• Ⅳ.결과 및 고찰
• Ⅳ-1.소화특성
• Ⅳ-1-1.소화슬러지의 특성 및 가스발생량
• Ⅳ-1-2.소화슬러지의 침강용적
• Ⅳ-2.소화슬러지의 탈수특성
• Ⅴ.결론
• 참고문헌