표제지
목차
1. 이론적 배경 7
1.1. 하수 슬러지 7
1.2. 혐기성 소화 9
1.3. 미생물연료전지 10
1.4. 미생물전기분해전지 12
1.5. 슬러지 전처리 16
2. 연구 목적 22
3. 실험 재료 및 방법 23
3.1. 슬러지 채취 23
3.2. 전처리 실험 23
3.3. 슬러지 전처리 23
3.4. 미생물전기분해전지 구성 및 운전 24
3.5. 분석 방법 25
3.6. Microbial taxonomy analysis 27
3.7. 경제성 분석 28
4. 실험 결과 및 고찰 29
4.1. 슬러지 가용화도 실험 29
4.2. 유기물 제거율 36
4.3. 메탄 생산 및 수율 39
4.4. Modified Gompertz plot 41
4.5. Microbial taxonomy analysis 43
4.6. 경제성 분석 46
5. 결론 47
6. 참고 문헌 49
ABSTRACT 54
Table 1. 주요 슬러지 처리 기술 8
Table 2. Comparisons of conventional AD and MEC 15
Table 3. Various physical or mechanical pretreatment methods 17
Table 4. Various chemical pretreatment methods 18
Table 5. Various thermal pretreatment methods 18
Table 6. Various biological pretreatment methods 19
Table 7. Comparison with non-pretreated and pretreated substrate in AD 20
Table 8. Properties of sludge samples (All values are average values.) 23
Table 9. Properties of midified Gompertz equation 42
Table 10. Chemical, physical and electrical energy values input to the reactor 46
Figure 1. Sewage sludge generation status in Korea (2008~2017) 7
Figure 2. Sewage sludge treatment in Korea (2008~2017) 8
Figure 3. Reaction pathway of the anaerobic digestion of polymeric materials. 9
Figure 4. Basic configuration of microbial fuel cells (MFCs). (a) Dual-chamber MFC,... 11
Figure 5. Schematic diagram of principle of microbial electrolysis cell. 12
Figure 6. Mechanisms of (a) indirect interspeices electron transfer (IIET) via hydrogen, (b)... 14
Figure 6. Schematic diagram of microbial electrolysis cell reactor. 25
Figure 7. Solids change after alkaline ultrasonic pretreatment at (a) pH 7, (b) pH 8,... 31
Figure 8. COD change after alkaline ultrasonic pretreatment at (a) pH 7, (b) pH 8,... 35
Figure 9. Degree of solubilization of sewage sludge at different... 35
Figure 10. Removal rates and changes of (a) TS, (b) VS, (c) COD. 37
Figure 11. Sludge solids distribution according to size and organic fraction. 38
Figure 12. (a) Cumulative methane production. (b) Total methane production and yield. 40
Figure 13. Modified Gompertz plot 42
Figure 14. Microbial community structure (a) bacteria at phylum level, (b) archaea at genus level. 45