표제지
목차
I. 서론 9
II. 이론적 배경 11
1. 저수조의 설치기준(법적근거) 및 제도 11
1) 저수조 설치에 관한 법규 11
2) 저수조의 관리에 관한 법규 15
3) 급수장치의 소독 등 위생관리에 관한 법규 16
4) 저수조 청소업에 관한 법규 20
5) 위생상 조치대상 건축주 또는 관리자 등에 관한 교육 20
2. 저수조 시설의 현황 21
3. 저수조의 종류 23
1) 지하저수조 23
2) 지상저수조 23
3) 고가수조 24
4) 중간수조 24
5) 기타 저수조 24
4. 저수조의 재질에 따른 종류와 특성 25
1) 콘크리트(Concrete) 저수조 25
2) FRP(Fiber Reinforced Plastic) 저수조 25
3) SMC(Sheet Molding Compound) 저수조 25
4) 스테인레스(STS) 저수조 26
5) PE(Poly Ethylene) 저수조 26
5. 저수조 도장의 특성 및 종류 27
1) 저수조 도장의 특성 27
2) 저수조 도장의 종류 27
3) 에폭시(EPOXY)합성수지 도료의 특성 30
4) 도료의 선택조건 32
6. 수질기준 항목별 특성 33
7. 저수조의 문제점 및 개선방안 38
1) 구조 및 재질적인 문제점과 개선방안 38
2) 위생관리상 제도적인 문제점과 개선방안 39
III. 조사 및 분석 방법 41
1. 조사기간 및 대상 41
2. 분석 방법 43
1) 저수조의 기초항목 분석 43
2) 휘발성 유기물질(VOCs) 분석 43
3) 무기물질 분석 45
4) 저수조내 미생물상 조사 47
5) 저수조내 침전물 분석 47
IV. 결과 및 고찰 48
1. 저수조의 실태조사 결과 48
2. 조사대상 수질현황 51
3. 지역별 수질특성 54
4. 항목별 수질특성 57
5. 저수조의 재질에 대한 수질특성 61
6. 휘발성 유기물질 분석결과 64
7. 무기물질 분석결과 67
1) 금속성 물질 분석결과 67
2) 이온성 물질 분석결과 68
8. 저수조내 일반세균 및 총대장균군 분석결과 71
9. 저수조내 미생물상 관찰 73
10. 저수조내 침전물 분석결과 75
V. 결론 76
참고문헌 79
Abstract 81
감사의 글 84
Table 1. The status of domestic water tank in the year 2006. at present 21
Table 2. The status of water tank in Gyeongnam area in the year 2006. at present 22
Table 3. The inspection items and concentration standard of water tanks 43
Table 4. Operating conditions of P&T concentrator and GC for BTEX 44
Table 5. Operating conditions of Headspace sampler and GC for VOCs 44
Table 6. Operating conditions of ICP/MS for inorganic metals 46
Table 7. Operating conditions of IC for inorganic anions 46
Table 8. Water quality characteristics of items as to areas 54
Table 9. Concentration range and detection numbers & frequencies as to items 58
Table 10. Water quality characteristics of items as to tank quality 61
Table 11. Concentration range and detection frequencies of VOCs 65
Table 12. Concentration range and detection frequencies of inorganic metals 67
Table 13. Concentration range and detection frequencies of inorganic anions 70
Fig. 1. Investigated sites of the water tanks in Gyeongnam area 41
Fig. 2. Sampling photographs of investigated site in the elevated water tank 42
Fig. 3. Sampling photographs of investigated site in the underground water tank 42
Fig. 4. The year elapsed after installation of water tank 48
Fig. 5. The cleaning cycles of water tank 49
Fig. 6. The quality investigated of underground water tank as to areas 50
Fig. 7. The quality investigated of elevated water tank as to areas 50
Fig. 8. The inspection cycles of water quality 51
Fig. 9. Inspection results of water quality investigated in Gyeongnam area 52
Fig. 10. Inspection results of water quality as to areas 52
Fig. 11. Inspection results of water quality not passed as to items 53
Fig. 12. Inspection results of water quality not passed as to tank quality 53
Fig. 13. pH characteristics of water tank as to areas 55
Fig. 14. Mesophilic bacteria characteristics of water tank as to areas 55
Fig. 15. Turbidity characteristics of water tank as to areas 56
Fig. 16. Residual chlorine characteristics of water tank as to areas 56
Fig. 17. Detection number & frequencies of water tank as to pH 59
Fig. 18. Detection number & frequencies of water tank as to mesophilic bacteria 59
Fig. 19. Detection number & frequencies of water tank as to turbidity 60
Fig. 20. Detection number & frequencies of water tank as to residual chlorine 60
Fig. 21. pH characteristics as to quality of water tank 62
Fig. 22. Mesophilic bacteria characteristics as to quality of water tank 62
Fig. 23. Turbidity characteristics as to quality of water tank 63
Fig. 24. Residual chlorine characteristics as to quality of water tank 63
Fig. 25. Concentration ranges of VOCs in the water tanks 66
Fig. 26. Detection frequencies of VOCs in the water tanks 66
Fig. 27. Concentration ranges of inorganic metals in the water tanks 68
Fig. 28. Detection frequencies of inorganic metals in the water tanks 68
Fig. 29. Concentration ranges of inorganic anions in the water tanks 70
Fig. 30. Detection frequencies of inorganic anions in the water tanks 70
Fig. 31. Photograph of mesophilic bacteria colony on the PCA medium 72
Fig. 32. Photograph of total coliforms about gas produced in fermentation tubes of the LB and BGLB medium 72
Fig. 33. Optical microscopic photogram of microorganisms in the water tank 74
Fig. 34. SEM microscopic photogram of microorganisms in the water tank 74