표제지
목차
국문요약 9
제1장 서론 11
제2장 이론적 배경 14
1. 이취미 유발 물질 14
1.1. 이취미 유발 물질의 종류와 특성 14
1.2. Geosmin과 2-MIB의 특성 16
1.3. Geosmin과 2-MIB을 생성하는 미생물 19
1.4. 이취미 유발물질의 제거효과 검토 21
1.5. 각국의 이취미 수질기준 24
2. NOM이 이취미 유발물질 제거에 미치는 영향 26
2.1. 자연유기물질(NOM) 26
2.2. 입상활성탄처리시 NOM의 영향 28
2.3. 오존 처리시 NOM의 영향 29
3. UV(Ultraviolet)처리 기술 30
3.1. UV의 개념 30
3.2. UV산화의 특징 33
3.3. UV lamp의 종류 37
3.4. Pulse UV 장치의 특징 39
제3장 실험방법 44
1. 시료 44
2. 실험장치 및 방법 45
3. 분석방법 47
3.1. DOC의 측정 47
3.2. UV254의 측정(이미지참조) 47
3.3. Geosmin/2-MIB의 측정 47
제4장 실험결과 및 고찰 49
1. Pulse UV 장치를 이용한 이취미 유발물질의 제거 효과 49
1.1. 반응 시간과 H₂O₂ 주입량에 따른 특성 49
1.2. 조사거리에 따른 특성 54
1.3. pH에 따른 특성 55
1.4. 온도에 따른 특성 56
2. Pulse UV 장치를 이용한 이취미 유발물질 제거시 NOM의 영향 57
2.1. Humic acid의 영향 57
2.2. Fulvic acid의 영향 60
2.3. NOM이 이취미 유발물질제거에 미치는 영향 고찰 63
2.4. 한강원수의 영향 68
2.5. 유기물 제거효과 70
제5장 결론 73
참고문헌 75
Abstract 81
Table 1. Compounds causing tastes and odors in water 15
Table 2. Properties of odorous compounds by biomass 18
Table 3. Actinomycetes that have been shown to produce Geosmin and 2-MIB in culture 20
Table 4. Cyanobacterias that have been shown to produce Geosmin and 2-MIB in culture 21
Table 5.Taste and odor quality standards of drinking water 24
Table 6. Oxidizing potential for conventional oxidizing agents 30
Table 7. Variety of advanced oxidation processes 31
Table 8. Comparison of UV lamp 43
Table 9. Characteristics of raw water 44
Table 10. Electrical properties of the power supply 46
Table 11. The experimental conditions of Pulse UV system 46
Table 12. GC/MS condition for analysis of 2-MIB & Geosmin 48
Fig. 1. Continuum of particulate and dissolved organic carbon in naturals waters 27
Fig. 2. Definition of ultraviolet light: range and natural sources 32
Fig. 3. Mechanism of UV AOP oxidation 34
Fig. 4. Low-pressure mercury lamp 38
Fig. 5. Medium and high-pressure mercury lamp 39
Fig. 6. Pulse UV System 39
Fig. 7. Comparison of discharge of Pulse UV lamp and mercury lamp 41
Fig. 8. Comparison of UV intensity spectrum for low Pressure UV and Pulse UV lamp 42
Fig. 9. UV intensity with respects to the irradiation distances 42
Fig. 10. Pulse UV system 45
Fig. 11. Degradation of taste and odor compounds by Pulse UV process 51
Fig. 12. Degradation of taste and odor compounds by Pulse UV process(H₂O₂ 3mg/L) 51
Fig. 13. Degradation of taste and odor compounds by Pulse UV process(H₂O₂ 5mg/L) 52
Fig. 14. Degradation of taste and odor compounds by Pulse UV process(H₂O₂ 7mg/L) 52
Fig. 15. Geosmin removal by H₂O₂ injection 53
Fig. 16. 2-MIB removal by H₂O₂injection 53
Fig. 17. Character of taste and odor compounds by distance 54
Fig. 18. Character of taste and odor compounds by pH 55
Fig. 19. Character of taste and odor compounds by temperature 56
Fig. 20. Degradation of Geosmin with humic acid(2mg/L) by Pulse UV/H₂O₂ process 58
Fig. 21. Degradation of 2-MIB with humic acid(2mg/L) by Pulse UV/H₂O₂ process 58
Fig. 22. Degradation of Geosmin with humic acid(5mg/L) by Pulse UV/H₂O₂ process 59
Fig. 23. Degradation of 2-MIB with humic acid(5mg/L) by Pulse UV/H₂O₂ process 59
Fig. 24. Degradation of Geosmin with fulvic acid(2mg/L) by Pulse UV/H₂O₂ process 61
Fig. 25. Degradation of 2-MIB with fulvic acid(2mg/L) by Pulse UV/H₂O₂ process 61
Fig. 26. Degradation of Geosmin with fulvic acid(5mg/L) by Pulse UV/H₂O₂ process 62
Fig. 27. Degradation of 2-MIB with fulvic acid(5mg/L) by Pulse UV/H₂O₂ process 62
Fig. 28. Comparison of Geosmin degradation with humic acid by Pulse UV process 64
Fig. 29. Comparison of Geosmin degradation with humic acid by Pulse UV Process and Pulse UV/H₂O₂(5mg/L) process 64
Fig. 30. Comparison of 2-MIB degradation with humic acid by Pulse UV process 65
Fig. 31. Comparison of 2-MIB degradation with humic acid by Pulse UV Process and Pulse UV/H₂O₂(5mg/L) process 65
Fig. 32. Comparison of Geosmin degradation with fulvic acid by Pulse UV process 66
Fig. 33. Comparison of Geosmin degradation with fulvic acid by Pulse UV Process and Pulse UV/H₂O₂(5mg/L) process 66
Fig. 34. Comparison of 2-MIB degradation with fulvic acid by Pulse UV process 67
Fig. 35. Comparison of 2-MIB degradation with fulvic acid by Pulse UV process and Pulse UV/H₂O₂(5mg/L) process 67
Fig. 36. Degradation of Geosmin with raw water by Pulse UV/H₂O₂ process 69
Fig. 37. Degradation of 2-MIB with raw water by Pulse UV/H₂O₂ process 69
Fig. 38. Degradation of DOC and UV254 by Pulse UV(HA) 71
Fig. 39. Degradation of DOC and UV254 by Pulse UV/H₂O₂(HA) 71
Fig. 40. Degradation of DOC and UV254 by Pulse UV(FA) 72
Fig. 41. Degradation of DOC and UV254 by Pulse UV/H₂O₂(FA) 72