표제지
목차
Abstract 7
제1장 서론 9
제2장 이론적 배경 11
2.1. 질소 제거의 필요성 11
2.2. 생물학적 질소 제거 기작 11
2.2.1. 질산화 13
2.2.2. 탈질화 24
2.3. 생물학적 질소제거를 위한 고도처리 29
2.3.1. 생물학적 질소제거를 위한 공정 29
2.3.2. 질소, 인 동시제거를 위한 공정 31
2.4. 슬러지 저감의 필요성 34
2.4.1. 슬러지 발생 및 처리 현황 35
2.4.2. 슬러지 감량화 기술 37
2.5. 유용 미생물 (Beneficial Microorganism) 39
① 광합성세균(Photosynthetic bacteria) 39
② 효모(Yeasts) 40
③ 유산균(Lactic acid bacteria) 40
④ 방선균(Actinomycetes) 40
⑤ 사상균(Filamentous Fungi) 40
제3장 실험장치 및 실험방법 42
3.1. 실험 장치 및 장치개요 42
3.2. 실험 방법 44
3.2.1. 유입 폐수 45
3.2.2. 실험 내용 47
제4장 실험 결과 및 고찰 49
4.1. 폐수의 종류별 처리효율 49
4.1.1. 양식장 폐수 49
4.1.2. 철강 폐수 51
4.1.3. 혼합 폐수 52
4.2. 유용 미생물(BM)의 폐수처리 효과에 대한 고찰 54
4.2.1. 폐수처리 효율 평가 54
4.2.2. 폐수처리 효율 비교 57
제5장 결론 58
참고문헌 59
Table 2-1. Genera and characteristics of the chemoautotrophic nitrifying bacteria 16
Table 2-2. Some characteristics of nitrifying bacteria 17
Table 2-3. Half-saturation valves of the specific growth rate on the nitrification process 19
Table 2-4. Effect of temperature on maximum specific growth rate with nitrification process 21
Table 2-5. Ammonia and nitrite concentration range for nitrobacter inhibition as function of pH(T=20℃) 23
Table 2-6. Optimal conditions of nitrific growth 24
Table 2-7. The sludge generation rate of rivers and Reservoirs in domestic 35
Table 3-1. The influent characteristics of Fish farming Waste water 45
Table 3-2. The influent characteristics of Steel Industry Waste water 46
Table 3-3. The influent characteristics of Mixed Waste water 47
Table 4-1. The comparison with the field facilities 57
Figure 2-1. Waste water Nitrogen cycle 12
Figure 2-2. Single sludge process (preanoxic) 29
Figure 2-3. Single sludge process (postanoxic) 30
Figure 2-4. Dual sludge process 31
Figure 2-5. A2O process 32
Figure 2-6. Five-stage process 33
Figure 2-7. Modify UCT process 33
Figure 2-8. VIP process 34
Figure 3-1. Flow Diagram for Lab scale Pilot 43
Figure 3-2. Picture of Lab scale Pilot 44
Figure 4-1. The result of BOD removal in fish farming waste water 49
Figure 4-2. The result of TN removal in fish farming waste water 50
Figure 4-3. The Sludge generation relationship with BOD, TN, MLSS 50
Figure 4-4. The result of BOD removal in Steel industrial waste water 51
Figure 4-5. The result of TN removal in Steel industrial waste water 51
Figure 4-6. The Sludge generation relationship with BOD, TN, MLSS 52
Figure 4-7. The result of BOD removal in Mixed waste water 52
Figure 4-8. The result of T-N removal in Mixed waste water 53
Figure 4-9. The Sludge generation relationship with BOD, TN, MLSS 53
Figure 4-10. The treatment efficiency of BOD 54
Figure 4-11. The treatment efficiency of TN 55
Figure 4-12. The comparison for MLSS 56
Figure 4-13. The comparison for Sludge 57