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제1장 서론 27
제1절 연구필요성 및 목표 28
1. 연구개발의 필요성 28
2. 연구개발의 목표 31
3. 연구개발의 추진방법 및 연도별 추진 체계 32
제2장 국내외 기술 개발 현황 34
제1절 국내 정책 동향 35
1. 미국 지표수처리규정(SWTR) 및 관련규정 개괄 35
2. 국내 소독공정 정수처리기준 강화 43
3. 정수처리기준 강화에 대한 대응방안 47
제2절 국외 연구 동향 48
1. 복합소독 적용 기술의 종류 및 특성 48
2. 복합소독 기술 연구 동향 53
제3절 국내외 지적재산권 동향 55
1. 기술 특허 분석 범위 및 분석 기준 56
2. 정수처리 설비에 적용 가능한 복합소독 기술 분야의 동향 62
3. 포트폴리오로 본 정수처리 설비에 적용 가능한 복합소독 기술 개발 분야의 위치 65
4. 국가별 특허 동향 및 점유율 69
제4절 국내외 소독기술 동향 81
1. 복합소독기술 도입사례 81
2. 국내 소독기술 현황 및 특성 87
제3장 연구개발 결과 및 활용계획 99
제1절 복합소독기술 개발 방향 및 실용화 100
1. 복합소독 정의 및 대상공정 선정 100
2. 복합소독 자동화장치 개발 방향 101
3. 고도산화공정의 복합소독공정에의 적용 104
4. 미생물의 불활성화 메커니즘 규명 123
5. 복합소독 반응기 해석 138
제2절 통합소독모델 및 반응해석 143
1. 통합소독모델 143
2. 통합소독모델 적용 절차 149
3. 반응조 유동해석 모델 153
4. 미생물 제거 모델 170
5. 소독부산물 예측 모델 174
제3절 오존공정 설계, 운영 및 최적화 179
1. 오존공정의 설계 및 운영 최적화에 대한 개요 179
2. 오존공정 설계 최적화 209
3. 오존공정 운영 최적화 229
4. 오존공정 평가 프로그램 개발 245
제4절 복합소독공정 설계 및 운전 최적화 246
1. 복합소독공정 소독제 주입 및 접촉설비 구성방안 246
2. 복합소독공정 반응기 해석을 위한 LIF 기술 개발 256
3. 복합소독 접촉지 유동 해석 기술 266
4. 복합소독 소독부산물 평가 및 예측 모델 개발 279
5. 복합소독 자동화설비 모델 및 제어 알고리즘 개발 316
6. 사용자지향의 복합소독공정 소프트웨어 개발 321
7. 복합소독 접촉설비 설계 최적화 335
제5절 복합소독 자동제어 기술 341
1. 복합소독 실증플랜트 구성 및 운전 341
2. 복합소독 자동제어 시스템 알고리즘 343
3. 무선 모바일 기반의 복합소독 통합 평가 프로그램 346
제6절 요약 350
제4장 결론 352
제1절 연구개발 목표의 달성도 353
제2절 관련분야 기술발전 기여도 358
제3절 연구개발결과의 활용계획 359
제5장 참고문헌 365
Table 1.1.1.1. Required CT or IT Value for 2 log(99 %) Inactivation(pH 7.1, 20 ℃, Phosphate Buffer Condition) 30
Table 2.1.1.1. Comparison of SWTR, IESWTR and LT1ESWTR 38
Table 2.1.1.2. Rules and Target Microorganisms of Water Treatment (USA) 39
Table 2.1.1.3. Rules of Microorganisms and DBPs 40
Table 2.1.1.4. Level of Treatment Required for Filtered Systems 41
Table 2.1.1.5. Cryptosporidium Treatment Requirements for Unfiltered Systems 43
Table 2.1.2.1. Rules of Turbidity for Filtered Systems 45
Table 2.1.2.2. Removal of Virus and Giardia Cyst by Filtration 45
Table 2.1 2.3. Factors for Inactivation Calculation 46
Table 2.1.2.4. Required Virus and Giardia Inactivation for Water Treatment Systems 46
Table 2.2.1.1. Disinfectant/Oxidant Characteristics 50
Table 2.2.1.2. Formation of DBPs 51
Table 2.2.1.3. Application of Sequential Disinfection Process 51
Table 2.2.2.1. Results of References about Sequential Disinfection 54
Table 2.3.1.1. Analysis Criteria of Patent 56
Table 2.3.1.2. Criteria of Technology 57
Table 2.3.1.3. Keyword of Classification 58
Table 2.3.1.4. Index of Patent Analysis 62
Table 2.3.4.1. TOP3 of Patent Applicants 75
Table 2.4.1.1. Summary of Selected Studies on the Inactivation by Chlorine Dioxide of Various Microorganisms in Water 83
Table 2.4.1.2. Summary of Trends Regarding Chlorine Dioxide Residual, and Chlorite and Chlorate Ion Concentrations in Distribution Systems 85
Table 2.4.1.3. Disinfectants Used in Europe 86
Table 2.4.1.4. Use of Disinfectants/Oxidants in U.S. Water Systems 87
Table 2.4.2.1. Management of Water Treatment for Disinfection 88
Table 3.1.1.1. Target-selection Process of Sequential Disinfection 101
Table 3.1.3.1. Rate Constant of OH Radical Molecular Ozone for Geosmin and 2-MIB 115
Table 3.1.3.2. Degradation of 2-MIB and Bisphenol-A under Ozone/H₂O₂System([O₃])0=2 mg/L, Contact Time=1 min, [pCBA]0=3 mM, [Bisphenol-A]0=3 mM, pH 6.9(10 mM))(이미지참조) 116
Table 3.1.3.3. Degradation of Contaminants under UV/H₂O₂System(IT = 90 mV/㎠.sec, [H₂O₂])0=0.4 mM, [pCBA]0=5 mM, [1,4-Dioxane]0=5 mM, [Bisphenol-A]0=5 mM, [Geosminl-A]0=5 mM, [2-MIB]0=5 mM, pH 6.9 (10 mM))(이미지참조) 122
Table 3.2.1.1. Hydraulic Characterization Alternatives 145
Table 3.2.1.2. Disinfectant Demand/Decay Characterization Alternatives 145
Table 3.2.1.3. Inactivation Kinetic Parameter Alternatives 146
Table 3.2.1.4. DBP Alternatives 147
Table 3.2.3.1. Coefficients of Molecule Diffusion, Turbulent Diffusion and Dispersion 166
Table 3.2.3.2. Variable Dispersion Values 170
Table 3.2.4.1. Characterization Comparison of Various Inactivation Models 172
Table 3.2.5.1. Components of DBPs in Drinking Water, Their Effects and Regulatory Limits 176
Table 3.2.5.2. Models for DBPs Formation 177
Table 3.3.1.1. Giardias and Virus Inactivation Rates 182
Table 3.3.1.2. CT Values for Cryptosporidium Inactivaiton by Ozone 183
Table 3.3.1.3. Inactivation Rate by Ozone, kc, for Cryptosporidium(이미지참조) 183
Table 3.3.1.4. Giardias and Virus Disinfection Data and Calculation Results for a Convential Treatment Plant at a Water Temperature of 17 ℃ 190
Table 3.3.1.5. Giardias and Virus Disinfection Data and Calculation: Results for a Direct-filtration Treatment Plant at a Water Temperature 195
Table 3.3.1.6. Disinfection Results Using Three Residual Analyzers and Ceffulent in the CT Value Calculation(이미지참조) 196
Table 3.3.1.7. Disinfection Results Using Three Residual Analyzers and Caverage in the CT Value Calculation(이미지참조) 200
Table 3.3.1.8. Extended CSTR Cryptosporidium(Cryptosporidum) log-inactivaiton Data and Calculation Results Using k* avg(이미지참조) 202
Table 3.3.1.9. Extended CSTR Cryptosporidium log-inactivatio Data and Calculation Results Uslng k* max(이미지참조) 207
Table 3.3.1.10. Extended Integrated CT10 Cryptosporidium log-inactivation Data and Calculation Results k* max(이미지참조) 209
Table 3.3.2.1. Checklist for Ozone Generator and Contactor Sizing Optimization 212
Table 3.3.2.2. Estimated Residual Profile Using Bench-scale Demand and Decay Data 216
Table 3.3.2.3. Estimated Disinfection from Bench-scale Demand and Decay Data 219
Table 3.3.2.4. Achieved Disinfection Performance for Full-scale Plane B Measured Data 220
Table 3.3.3.1. Ways to Optimize Ozonation 231
Table 3.3.3.2. Example Plant Ozone Design and Operating Criteria 233
Table 3.3.3.3. Example Ozone Monitoring Data 234
Table 3.3.3.4. Disinfection CT Value and Giardia and Virus Credit Using Effluent Method 235
Table 3.3.3.5. Monthly Summary Report for Ozone Generation System Performance 241
Table 3.3.3.6. Monthly Summary Report for Ozone Contact Performance 242
Table 3.4.1.1. Ozone Injection Types 247
Table 3.4.1.2. Effect Factors of Ozone Treatment 250
Table 3.4.1.3. Factors for Ozone Contactor 251
Table 3.4.3.1. RT and Flow Conditions in Clearwell 275
Table 3.4.4.2. Efficiency of Disinfectants 283
Table 3.4.4.3. Group of DBPs 284
Table 3.4.4.4. Observation of Experiment Data 291
Table 3.4.4.5. Experimental Conditions for Characterizing DBP Formation Potential in Chlorine Alone and Chlorine Dioxide/Chlorine Process 298
Table 3.4.4.6. Experimental Conditions during UV Irradiation 305
Table 3.4.4.7. Observation of Experiment Data (Cl₂) 307
Table 3.4.4.8. Observation of Experiment Data (ClO₂/Cl₂) 311
Table 3.4.4.9. Observation of Experiment Data (O₃/Cl₂) 313
Table 3.4.6.1. Error Correction of Excel Program 326
Table 3.4.6.2. Improvement of CT Program 329
Table 3.4.7.1. Evaluation of CT for the Design of Ozone/Chlorine Disinfection Process 336
Table 3.4.7.2. Evaluation of CT for the Design of Ozone/Chlorine Disinfection Process 337
Table 4.1.1.1. Achievement of Research and Development 354
Table 4.1.1.2. Results of Paper and Patent (1st Year) 355
Table 4.1.1.3. Results of Paper and Patent (2nd Year) 356
Table 4.1.1.4. Results of Paper and Patent (3rd Year) 357
Table 4.3.1.1. Applied Field of Results and System 360
Figure 1.1.1.1. Giardia Cyst and Cryptosporidium Oocyst 28
Figure 1.1.2.1. Contents Scope 32
Figure 1.1.3.1. Development Direction of Project 33
Figure 1.1.3.2. Time Plan of this Project 33
Figure 2.3.2 1. Trends in Number of Patent Applications or Patent Publicized for Sequential Disinfection Technology 63
Figure 2.3.2.2. Patent Share of Four Patent Offices (Korea, Japan, EU and USA) 63
Figure 2.3.3.1. The Trend of Elongation Rate for Sequential Disinfection Patents using Patent Portfolio Analysis 66
Figure 2.3.3.2. Portfolio Analysis for Sequential Disinfection Patents (Elongation Rate vs Number of Patents) 67
Figure 2.3.3.3. Portfolio Analysis for Sequential Disinfection Patents (Number of Applicants vs Number of Patents) 69
Figure 2.3.4.1. Distribution in Resident and Non-resident Patent Fillings at Korea Patent Office 70
Figure 2.3.4.2. Distribution in Resident and Non-resident Patent Fillings at USA Patent Office 71
Figure 2.3.4.3. Distribution in Resident and Non-resident Patent Fillings at Japan Patent Office 72
Figure 2.3.4.4. Distribution in Resident and Non-resident Patent Fillings at EU Patent Office 73
Figure 2.3.4.5. Comparison of Activity Index(AI) for UV+H₂O₂Process at All Selected Patent Offices 77
Figure 2.3.4.6. Comparison of Activity Index(AI) for Ozone+UV Process at All Selected Patent Offices 78
Figure 2.3.4.7. Comparison of Activity Index(AI) for Ozone+H₂O₂Process at All Selected Patent Offices 79
Figure 2.3.4.8. Comparison of Activity Index (AI) for Ozone+Chlorine Process at All Selected Patent Offices 79
Figure 2.3.4.9. Comparison of Activity Index (AI) for Ozone+Chlorine Dioxide Process at All Selected Patent Offices 80
Figure 2.4.2.1. Turbidity Profile for Clear Well of Each Domestic WTP 91
Figure 2.4.2.2. Chlorine Residual Profile for Each of the Domestic WTPs 91
Figure 2.4.2.3. T10/T Profile for Each of the Domestic WTPs(이미지참조) 92
Figure 2.4.2.4. Profile of Giardia Inactivation Ratio for Each of the Domestic WTPs 92
Figure 2.4.2.5. Monthly Trends of Virus Inactivation Ratio for Clear Well in WTP B 93
Figure 2.4.2.6. Monthly Trends of Virus Inactivation Ratio for Clear Well to Storage in WTP B 94
Figure 2.4.2.7. Monthly Trends of Maximum Giardia Inactivation for Clear Well 95
Figure 2.4.2.8. Monthly Trends of Maximum Giardia Inactivation Ratio from Clear Well to Storage 95
Figure 2.4.2.9. Monthly Trends of Minimum Virus Inactivation Ratio for Clear Well to Storage in WTP Q 97
Figure 2.4.2.10. Monthly Trends of Minimum Virus Inactivation Ratio for Clear Well to Storage in WTP Q 97
Figure 2.4.2.11. Monthly Trends of Minimum Giardia Inactivation Ratio in WTP Q 98
Figure 3.1.1.1. Synergy Effect of Sequential Disinfection by Ozone Followed by Free Chlorine 100
Figure 3.1.2.1. Automated Control System of Sequential Disinfection Process 102
Figure 3.1.3.1. Comparison Of Synergistic Effect for Ozone/H₂O₂With Primary or Second Chlorination. (Cho et al., OS&E, 2006) 105
Figure 3.1.3.2. Schematic Diagram of Chlorination Reactor 106
Figure 3.1.3.3. UV Reactor 108
Figure 3.1.3.4. Rct Concept (Elovitzand von Gunten, Water Research, 1999) 110
Figure 3.1.3.5. Determination of OH Radical Amounts Using Rct Concept 110
Figure 3.1.3.6. Structure of 1,4-Dioxane 112
Figure 3.1.3.7. Ozone Decay for Raw Water Condition during Ozonation(DOC = 1.85 mg/L, Ozone dose = 2.1 mg/L, pH 7.1, Temp.=20 ℃) 112
Figure 3.1.3.8. PCBA Degradation for Raw Water Condition during Ozonation(DOC = 1.85mg/L, Ozone dose = 2.1 mg/L, [pCBA]0=2 mM, pH 7.1, Temp.=20 ℃)(이미지참조) 113
Figure 3.1.3.9. Prediction of 1,4-Dioxane Removal during Ozonation(Raw Water = Han River, DOC = 1.85 mg/L, Ozone Dose = 2.1 mg/L, [1.4-Dioxane]0 = 2 mM, [pCBA]0= 2 mM, pH 7.1, Temp. = 20 ℃)(이미지참조) 114
Figure 3.1.3.10. Enhanced Degradation of 1,4-Dioxane in Ozone/H₂O₂System([H₂O₂]0 = 0.04 mM, Ozone Dose = 2.8 mg/L, pH 7.1, Temp. = 25 ℃, Contact Time = 25 sec)(이미지참조) 114
Figure 3.1.3.11. Molecular Structure of Geosmin and 2-MIB 115
Figure 3.1.3.12. Prediction of Geosmin and MIB Removal during Ozonation(Raw Water = Han River, DOC = 1.85mg/L, Ozone dose = 2.1 mg/L, [pCBA]0 = 300 mg/L, pH 7.1, Temp. = 20 ℃)(이미지참조) 116
Figure 3.1.3.13. Microbial Inactivation of MS-2 Phage and Bacillus Subtilis Spores with UV and UV/H₂O₂at pH 7.1(UV Intensity = 0.4 mV/cm², Temp. = 20 ℃) 118
Figure 3.1.3.14. Norovirus Inactivation by UV Irradiation 119
Figure 3.1.3.15. Sequential Disinfection with UV/H₂O₂Followed by Cl₂at pH 7.1(UV Intensity = 0.4 mV/cm², Temp. = 20 ℃) 120
Figure 3.1.3.16. Quantitative Estimation of the Sequential Disinfection 120
Figure 3.1.3.17. Degradation of pCBA under UV/H₂O₂(I = 0.4 mV/cm², [pCBA]0 = 5 mM, pH7).(이미지참조) 121
Figure 3.1.4.1. Cryptosporidium Refining Procedures Using Density Difference 125
Figure 3.1.4.2. In Vitro Excystation Method 126
Figure 3.1.4.3. Plaque Assay Method of MNV Virus 127
Figure 3.1.4.4. Bradford Assay during the Inactivation of Bacillus Subtilis Spore 131
Figure 3.1.4.5. Bradford Assay during the Inactivation of E.coli 132
Figure 3.1.4.6. PAGE Assay for Assaying the Disrupted Protein in E.coli Surface 133
Figure 3.1.4.7. Amount of Lipid Peroxidation as a Function of E.coli Inactivation 134
Figure 3.1.4.8. Cell Permeability Change as a Function of E.coli Inactivation Assessed Based on ONPG Hydrolysis Rate 135
Figure 3.1.4.9. Degradation of Intracellular Enzyme as a Function of E.coli Inactivation 136
Figure 3.1.4.10. TEM Image before and after 1 log Inactivation by Various Disinfectants 137
Figure 3.1.4.11. TEM Images of E.coli under OH Radical Treatment 138
Figure 3.1.5.1. Results of Tracer Test in Chlorine Reactor 139
Figure 3.1.5.2. Chlorine Decay as a Function of Time 139
Figure 3.1.5.3. Microorganism Inactivation by Chlorination 140
Figure 3.1.5.4. Pattern of Ozone Decay Curve 141
Figure 3.1.5.5. Microorganism Inactivation by Ozone Treatment 142
Figure 3.2.1.1. Concept of Integrated Disinfection Model 143
Figure 3.2.1.2. Flowchart of IDM Application 146
Figure 3.2.1.3. Samples of IDM Outputs 148
Figure 3.2.1.4. Flowchart of Integrated Disinfection Model Development 149
Figure 3.2.2.1. Guidance for Assessing the Applicability of the IDM 150
Figure 3.2.2.2. Guidance for Hydraulic Characterization Module Alternative Selection 151
Figure 3.2.2.3. Guidance for Disinfectant Demand/Decay Module Alternative Selection 152
Figure 3.2.2.4. Guidance for Inactivation Kinetic Module Alternative Selection 152
Figure 3.2.2.5. Guidance for DBP Formation Module Alternative Selection 153
Figure 3.2.3.1. C Curve of CFSTR 154
Figure 3.2.3.2. RTD Curve 155
Figure 3.2.3.3. Dirac's Delta Function (Unit Impulse Function) 160
Figure 3.2.3.4. C Curve for Ideal CFSTR 161
Figure 3.2.3.5. C Curve for CFSTR 163
Figure 3.2.3.6. Dispersion of PFR 165
Figure 3.2.3.7. C Curve of PFR Pulse Injection with Low Dispersion 168
Figure 3.a.3.8. C curve of PFR Pulse Injection with High Dispersion 169
Figure 3.2.4.1. Comparison of Inactivation Kinetics for Various Microorganisms 174
Figure 3.3.1.1. Giardia and Virus log-inactivaiton Rates Based on USEPA Tables 182
Figure 3.3.1.2. Example Vertical-baffled Bubble-diffuser Ozone Contactor 186
Figure 3.3.1.3. CT Value for Variable Water Temperature and Giardia and Virus log- inactivation Targets Using Vest- fit Equations 188
Figure 3.3.1.4. Example Ozone Residual Profile for 2-log Virus and 0.5 log Giardia log-inactivation Credit at a Water Temperature of 17 ℃ 189
Figure 3.3.1.5. Example Ozone Residual Profile for 3-log Virus and 1-log Giardia log-inactivation Credit at Water Temperature of 1 ℃ 193
Figure 3.3.1.6. Example Ozone Residual Profile for 1.0-log Cryptosporidium log-inactivaiton Credit at a Water Temperature of 18 ℃ 199
Figure 3.3.1.7. k* Example Conservative Ozone Residual Profile Using k* Maximum instead of k* Average(이미지참조) 204
Figure 3.3.1.8. Example Ozone Residual Profile for Extended Integrated CT10 Method(이미지참조) 206
Figure 3.3.2.1. Bech-scale SOT for Determining O₃Demand and Decay 213
Figure 3.3.2.2. Estimated Residual Values from Plant B Demand and Decay 215
Figure 3.3.2.3. Comparison of Bench-scale Estimated Ozone Dose versus Full-scale Measured Ozone Dose to Achieve Equivalent Disinfection Performance 221
Figure 3.3.2.4. Effect of Ozone Concentration on Ozone Production Capability 222
Figure 3.3.2.5. Capital Cost Form 225
Figure 3.3.2.6. Operating Cost Form 226
Figure 3.3.2.7. Order-of-magnitude Cost for Ozone System Based on Installed Generation Capacity(Langlais et al., 1991) 226
Figure 3.3.2.8. Order-of-magnitude Cost for Ozone Contactor 227
Figure 3.3.2.9. Estimated Unit Floor Space for Ozone Equipment 228
Figure 3.3.2.10. Completed Order-magnitude Operating Cost Form 229
Figure 3.3.3.1. Ozone Residual, CT, PR Instaneous Daily Values during a 1- Year Period at the Sebago Lake WTP, Portland, Maine 230
Figure 3.3.3.2. Unit-volume Ozone Operating Cost at Canal Road WTP, Somerset, New Jersery 232
Figure 3.3.3.3. Expected Ozone Residual Profile Exists when the Measured Residual Values Form Three Analyzers are all on the First-order Decay Curve(River Mountains WTP, Las Vegas, Nevada) 236
Figure 3.3.3.4. Unexpected Ozone Residual Profile in Contactor 2; Three Analyzer Readings Indicate Potential Problems with Residual Meter Calibration 237
Figure 3.3.3.5. Ozone Generator-measured Specific Energy Compacted to Expected Specific Energy Indicates Trends in Efficiency Performance(H. J. Mills WTP, Riverside, California) 237
Figure 3.3.3.6. Virus PR for 186 Data Points during October 2004 (R.M. Levy WTP, Lakeside, Califronia) 240
Figure 3.3.3.7. Ozone Dose and Contractor Detention Time Trend Charts from Monthly Average Data in an Ozone Data Monitoring Program(R.M. Levy WTP, Lake side , California) 242
Figure 3.3.3.8. Ozone Production, Power Demand, and Specific Energy Trend Charts from Monthly Average Data in an Ozone Data Monitoring Program (H.J. Mills Water Treatment Plant, California) 243
Figure 3.3.3.9. Giardia Disinfection PR and Ozone Dose Trend Charts from Monthly Average Data in an Ozone Data Monitoring Program(H.J. Mills Water Treatment Plant, California) 244
Figure 3.3.3.10. Concentration-based Ozone Transfer Efficiency Trend Chart from Ozone Data Monitoring Program at Plant X 244
Figure 3.3.4.1. Process Design and Operation Optimization of Ozonation Process in Drinking Water Treatment 245
Figure 3.4.1.1. Side Stream Injection System Types 248
Figure 3.4.2.1. Sequential Disinfection Contactor for Evaluating Pilot Plant 256
Figure 3.4.2.2. Schematic Diagram of 3D-LIF System 257
Figure 3.4.2.3. Data Collection of Fluorescence Images(Fluorescencedye: Rhodamine 6G)(Excitation: 526nm, Emissino: 555 nm) 258
Figure 3.4.2.4. Vignetting Effects 259
Figure 3.4.2.5. Attenuation Effects 259
Figure 3.4.2.6. Flow Chart of LIF Process 260
Figure 3.4.2.7. Example of LIF Image for the Measurement of Ozone Contactor Hydrodynamics 261
Figure 3.4.2.8. 3D -LIF of Pre-disinfection 261
Figure 3.4.2.9. 3D-LIF of Post-disinfection 263
Figure 3.4.2.10. 3D-LIF Image of Ozone Contactor 264
Figure 3.4.2.11. 3D-LIF Image of UV Reactor 265
Figure 3.4.2.12. Schematic Diagram of UV Reactor 265
Figure 3.4.3.1. Profiles of Numerical Value Vat 1 Dimension of Grid Points 268
Figure 3.4.3.2. Profiles of Numerical Value Vat 2 Dimension of Grid Points 269
Figure 3.4.3.3. Flow Chart of Simple Algorism 272
Figure 3.4.3.4. Test Results of CFD 273
Figure 3.4.3.5. Scheme of Clearwell and Inlet/outlet Fluid Flow Stream 274
Figure 3.4.3.6. Scheme of Dosing Point of Chlorine in Inlet Clearwell 275
Figure 3.4.3.7. Pattern of Fluid Flow Stream at Dosing Point of Chlorine in Inlet Clearwell 276
Figure 3.4.3.8. Velocity Field Profiles at Dosing Point of Chlorine in Inlet Clearwell 277
Figure 3.4.3.9. Concentration Profiles at Dosing Point of Chlorine in Inlet Clearwell 277
Figure 3.4.3.10. RT Profiles at Dosing Point of Chlorine in inlet Clearwell 278
Figure 3.4.3.11. Flow Pattern of Clearwell 278
Figure 3.4.4.1. Schematic of ANN 288
Figure 3.4.4.2. Schematic Diagram of Chlorine Dioxide Generation 291
Figure 3.4.4.3. Comparison of THM(at 2 log Inactivation CT value, B. Subtilis Spore) 292
Figure 3.4.4.4. Comparison of THM(at 2 log Inactivation CT Value, Giardia) 293
Figure 3.4.4.5. THM by ClO₂/HOCl (pH 7) 293
Figure 3.4.4.6. THM by ClO₂concentration for 5 hr (ClO₂/HOCl) 294
Figure 3.4.4.7. THM by ClO₂/HOCl (pH 5) 295
Figure 3.4.4.8. THM by ClO₂/HOCl (pH 9) 296
Figure 3.4.4.9. Comparison of THM (10 ℃) 296
Figure 3.4.4.10. Comparison of THM by DOC 297
Figure 3.4.4.11. Formation Pattern of THM by Real Water 299
Figure 3.4.4.12. Formation Pattern of THM by Aldrich Humic Acid 300
Figure 3.4.4.13. Formation Pattern of THM by Suwannee River Humic Acid 301
Figure 3.4.4.14. Formation Pattern of THM by Suwannee River NOM 302
Figure 3.4.4.15. Comparison of THM Formation Potential between Chlorine Alone and Chlorine Dioxide/Chlorine Process after 168 hours of Reaction 303
Figure 3.4.4.16. Comparison of HAA Formation Potential between Chlorine Alone and Chlorine Dioxide/Chlorine Process after 168 hours of Reaction 304
Figure 3.4.4.17. Comparison of THM formation Potential by UV Irradiation 306
Figure 3.4.4.18. Prediction vs Observation of MR by Cl₂ 308
Figure 3.4.4.19. Results of ANN by Cl₂ 308
Figure 3.4.4.20. Comparison of MR and ANN (1) 309
Figure 3.4.4.21. Comparison of MR and ANN (2) 310
Figure 3.4.4.22. Comparison of MR and ANN (3) 310
Figure 3.4.4.23. Prediction vs Observation of MR by ClO₂/Cl₂ 312
Figure 3.4.4.24. Schematic of ANN (ClO₂/Cl₂) 312
Figure 3.4.4.25. Results of ANN (ClO₂/Cl₂) 313
Figure 3.4.4.26. Prediction vs Observation of MR by O₃/Cl₂ 314
Figure 3.4.4.27. Results of ANN (O₃/Cl₂) 315
Figure 3.4.5.1. Schematic Diagram of Sequential Disinfection Control System 318
Figure 3.4.5.2. Apparatus of Disinfection Decay and Demand 319
Figure 3.4.5.3. Algorithms of Sequential Disinfection Control 320
Figure 3.4.5.4. Main Frame of Sequential Disinfection Control Program 321
Figure 3.4.6.1. USER Friendly Software by Example for Designing and Simulating Ozone Disinfection process 322
Figure 3.4.6.2. Example of Software 323
Figure 3.4.6.3. Estimating Programs of Ozone Contact Tank 323
Figure 3.4.6.4. Flow Chart of CT Calculation 327
Figure 3.4.6.5. Logic of CT Program 327
Figure 3.4.6.6. Diagram of CT Program 328
Figure 3.4.6.7. Method of CT Program 328
Figure 3.4.6.8. CT Program (1) 330
Figure 3.4.6.9. CT program (2) 330
Figure 3.4.6.10. CT Program (3) 331
Figure 3.4.6.11. Evaluation Program of Sequential Disinfection Process 332
Figure 3.4.6.12. Program for Deforming the Disinfectant Dose of Sequential Disinfection Process (ClO₂+HOCl) 333
Figure 3.4.7.1. Evaluation of O₃Combined with Cl₂Process (Fixed Parameter : Residual Ozone Conc., Variable Parameter : Contact Time) 338
Figure 3.4.7.2. Evaluation of O₃Combined with Cl₂Process (Fixed Parameter : Contact Time, Variable Parameter : Residual Ozone Conc.) 339
Figure 3.4.7.3. Evaluation of ClO₂Combined with Cl₂Process (Fixed Parameter : Contact Time, Variable Parameter : Residual Ozone Conc.) 340
Figure 3.5.1.1. Pilot Plant of Sequential Disinfection 341
Figure 3.5.1.2. Instrument and Control of Sequential Disinfection 342
Figure 3.5.1.3. Pictures of Pilot-Plant in P WTP 342
Figure 3.5.2.1. MMI View for Sequential Disinfection Process 343
Figure 3.5.2.2. Auto-control Algorithm for sequential-disinfection process 345
Figure 3.5.3.1. Mobile Based Monitoring and Remote System for Evaluating Sequential Disinfection Process 346
Figure 3.5.3.2. System Architecture of Application Program 348
Figure 3.5.3.3. Main Menu View inTablet PC (iPad) 348
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