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Advances in Wastewater Treatment

Advances in Wastewater Treatment

Giorgio Mannina | G. A. Ekama | Hallvard Ødegaard | Gustaf Olsson

(2018)

Additional Information

Book Details

Abstract

Advances in Wastewater Treatment presents a compendium of the key topics surrounding wastewater treatment, assembled by looking at the future technologies, and provides future perspectives in wastewater treatment and modelling. It covers the fundamentals and innovative wastewater treatment processes (such as membrane bioreactors and granular process). Furthermore, it focuses attention on mathematical modelling aspects in the field of wastewater treatments by highlighting the key role of models in process design, operation and control. Other topics include: • Anaerobic digestion • Biological nutrient removal • Instrumentation, control and automation • Computational fluid dynamics in wastewater • IFAS systems • New frontiers in wastewater treatment • Greenhouse gas emissions from wastewater treatment Each topic is addressed by discussing past, present and future trends. Advances in Wastewater Treatment is a valid support for researchers, practitioners and also students to have a frame of the frontiers in wastewater treatment and modelling.

Table of Contents

Section Title Page Action Price
Cover Cover
Contents v
List of Abbreviations xiii
Preface xv
Chapter 1: Primary treatment: particle separation by rotating belt sieves 1
ABSTRACT 1
1.1 INTRODUCTION 2
1.1.1 The Norwegian primary treatment evaluation programme 2
1.2 ROTATING BELT SIEVE (RBS) TECHNOLOGY 4
1.2.1 Characterization of wastewater through screening tests 5
1.3 RESULTS AND EXPERIENCES FROM RBS OPERATION IN THE NORWEGIAN R&D PROGRAMME ON PRIMARY TREATMENT 6
1.3.1 Screening test results 6
1.3.2 Full-scale results 8
1.3.3 Chemically enhanced primary treatment 10
1.3.4 Sludge dewatering 10
1.3.5 Cost comparison 11
1.4 RESULTS AND EXPERIENCES FROM RECENT STUDIES OF RBS 11
1.4.1 Primary treatment 11
1.4.2 Chemically enhanced primary treatment in RBS 14
1.4.2.1 CEPT testing at the Nordre Follo WWTP 14
1.4.2.2 CEPT testing at the Sandefjord and Namsos WWTPs 16
1.4.3 Sludge from rotating belt sieves 18
1.5 IMPACT OF RBS PRIMARY TREATMENT ON NITROGEN REMOVAL 20
1.5.1 Impact on MBBR 21
1.5.2 Impact on MBR 23
1.5.3 Operation of RBS in front of biological nitrogen removal process 24
1.6 CONCLUSIONS 26
1.7 REFERENCES 27
Chapter 2: Biological Nutrient Removal Activated Sludge Systems with Membranes 31
ABSTRACT 31
2.1 INTRODUCTION 32
2.2 MATERIAL AND METHODS 33
2.3 OVERALL MBR AND CAS UCT SYSTEM PERFORMANCE 36
2.3.1 Organics (COD) removal 36
2.3.2 Pathogen (faecal coliform) removal 37
2.3.3 Trans-membrane pressure (TMP) 37
2.3.4 N and COD mass balances 38
2.3.5 Biological nitrogen removal 38
2.3.6 Biological phosphorus removal 38
2.3.7 System stability 39
2.3.8 Sludge production 39
2.4 CALCUATING THE BIOPROCESS SPECIFIC KINETIC RATES 40
2.5 NITRIFICATION KINETICS - AEROBIC BATCH TESTS 42
2.5.1 Test and calculation procedures 42
2.5.2 Nitrification – results and discussion 45
2.6 DENITRIFICATION KINETICS - ANOXIC BATCH TESTS 50
2.6.1 Batch test and calculation procedures 50
2.6.2 Denitrification kinetics – results and discussion 51
2.7 BIOLOGICAL P REMOVAL KINETICS – ANAEROBIC-ANOXIC/AEROBIC BATCH TESTS 57
2.7.1 Batch test and calculation procedures 58
2.7.2 Anaerobic P release and anoxic/aerobic P uptake behaviour 59
2.7.3 Anaerobic acetate uptake and P release kinetics 64
2.7.4 Aerobic and anoxic P uptake rates 64
2.7.5 Fermentation of readily biodegradable organics (RBO) 65
2.7.6 Comparing kinetic rates with those of other investigations 67
2.7.7 Comparing PAO and OHO denitrification behaviour in this and with other investigations 68
2.8 MEMBRANE NDEBPR SYSTEM REACTOR SIZING CONSIDERATIONS 74
2.8.1 Converting between sludge mass fractions and volume fractions – general considerations 74
2.8.2 Derivation of the sludge mass – volume fraction equations 75
2.8.3 BNR systems with secondary settling tanks for solid-liquid separation 88
2.8.4 BNR systems with membranes for solid-liquid separation 89
2.8.4.1 The MLE ND system 89
2.8.4.3 The University of Cape Town (UCT) NDEBPR system 90
2.8.4.4 The Johannesburg (JHB) NDEBPR system 90
2.8.4.5 The 3 stage NDEBPR Bardenpho system 91
2.8.4.6 The 5 stage NDEBPR Bardenpho system 91
2.8.5 Mass fraction flexibility in MBR BNR systems 92
2.8.6 Modelling MBR BNR systems 92
2.9 CONCLUSIONS 93
2.10 ACKNOWLEDGEMENTS 95
2.11 REFERENCES 96
Chapter 3: MBBR and IFAS Systems 101
ABSTRACT 101
3.1 Introduction 102
3.2 BOD-Removal 104
3.2.1 High-rate MBBR for BOD-removal 107
3.3 N-Removal by Nitrification/Denitrification 108
3.3.1 Nitrification 108
3.3.2 Denitrification 110
3.3.2.1 Combined pre- and post-denitrification MBBR 111
3.3.2.2 Post-denitrification MBBR 112
3.3.3 N-removal in MBBR-based IFAS plants 113
3.4 N-Removal by De-ammonification in MBBR-Based Plants 116
3.4.1 De-ammonification in the side-stream 117
3.4.2 De-ammonification in the main-stream 120
3.5 P-Removal 124
3.5.1 Chemical P-removal in MBBR and IFAS plants 124
3.5.2 Biological P-removal in MBBR plants 125
3.5.2.1 Discontinuously operated (SBR) MBBR 125
3.5.2.2 Continuously operated MBBR 126
3.6 Organic Micro-Pollutant Removal 128
3.7 Separation of Biomass From MBBR and IFAS Systems 129
3.7.1 Separation characteristics of MBBR biomass 130
3.7.2 High-rate biomass separation after MBBRs 132
3.7.2.1 Dissolved air flotation (DAF) 132
3.7.2.2 Micro-sand ballasted lamella sedimentation 133
3.7.2.3 Micro-screening (disc filtration) 134
3.7.3 Biomass separation in IFAS systems 138
3.8 MBBR-Based Membrane Bioreactor (MBR) Systems 139
3.8.1 Pure MBBR + membrane (MBBR-MBR) 140
3.8.2 MBBR based hybrid MBR (IFAS MBR) 142
3.9 A Comparison Between MBBR-, MBR- and IFAS MBR Systems 142
3.10 Summary and Conclusions 147
3.11 REFERENCES 148
Chapter 4: Aerobic Granular Sludge: State of the Art, Applications, and New Perspectives 155
ABSTRACT 155
4.1 INTRODUCTION 156
4.2 STRUCTURE AND COMPOSITION OF AEROBIC GRANULES 157
4.2.1 Physical characteristics 158
4.2.2 Extracellular polymeric substances 159
4.2.3 Ion exchange and biologically induced precipitation 161
4.2.4 Microbial community and nutrient removal capabilities 162
4.3 FACTORS AFFECTING GRANULE FORMATION AND STABILITY 165
4.3.1 Alternating “feast” and “famine” conditions 166
4.3.2 Hydrodynamic shear forces 167
4.3.3 Influent distribution 168
4.3.4 Selective wasting 171
4.3.5 Organic loading rate 171
4.3.6 Other environmental factors 172
4.3.7 Design considerations and control strategies 174
4.4.1 Municipal wastewater characteristics 177
4.4.2 Optional and required pretreatment of municipal wastewaters 177
4.4.3 Operational considerations for municipal wastewater treatment 180
4.4.4 Case study: Nereda® technology 181
4.5 APPLICATION OF AEROBIC GRANULAR SLUDGE TO INDUSTRIAL WASTEWATERS 185
4.5.1 Agro-food wastewater 185
4.5.1.1 Brewery wastewater 185
4.5.1.2 Dairy wastewater 186
4.5.1.3 Fish-canning wastewater 186
4.5.1.4 Palm oil wastewater 187
4.5.1.5 Winery wastewater 188
4.5.2 Petrochemical and oily wastewater 188
4.5.3 Landfill leachate 189
4.5.4 Wastewater contaminated by emerging micropollutants 190
4.6 AEROBIC GRANULAR SLUDGE IN CONTINUOUS FLOW REACTORS 190
4.6.1 Operation under continuous flow 191
4.6.2 Current designs and outlook for the future 192
4.7 CONCLUSION 193
4.8 References 194
Chapter 5: Membrane-Based Processes 205
ABSTRACT 205
5.1 INTRODUCTION 206
5.1.1 MBR advantage over activated sludge? 208
5.2 AEROBIC MEMBRANE BIOREACTORS (ACTIVATED SLUDGE BASED) 211
5.2.1 The membrane in aerobic MBR systems 212
5.2.2 Fouling and its management 214
5.2.3 Future outlook 217
5.3 ANAEROBIC MEMBRANE BIOREACTORS 217
5.3.1 AnMBR treatment performance and options 218
5.3.2 The membrane in anaerobic membrane bioreactor systems 223
5.3.3 Economics and future challenges 224
5.4 CONCLUSIONS 226
5.5 References 226
Chapter 6: Organic micropollutant control 231
ABSTRACT 231
6.1 INTRODUCTION 232
6.2 FATE OF MICROPOLLUTANTS IN MUNICIPAL WWTPS 233
6.3 BIOLOGICAL TRANSFORMATION PRODUCTS 239
6.4 ADDITIONAL TREATMENT TO CONTROL MICROPOLLUTANT REMOVAL 241
6.4.1 Ozonation followed by biological filters to remove oxidation by-products 242
6.4.2 Powdered activated carbon (PAC) addition 247
6.4.3 Granular activated carbon (GAC) filters 250
6.4.4 Process combinations 252
6.4.5 Control of operation 253
6.5 CONCLUSIONS AND OUTLOOK 254
6.6 REFERENCES 254
Chapter 7: Anaerobic digestion processes 261
ABSTRACT 261
7.1 INTRODUCTION 262
7.2 PRINCIPLES OF THE ANAEROBIC PROCESSES 264
7.3 DESIGN AND OPERATION OF AD REACTORS 268
7.3.1 Covered anaerobic lagoon 269
7.3.2 Continuous stirred tank reactor (CSTR) 269
7.3.3 Anaerobic packed/fixed bed reactor 270
7.3.4 Anaerobic fluidized bed reactor 271
7.3.5 Anaerobic moving bed biofilm reactor 271
7.3.6 Anaerobic sequencing batch biofilm reactor 272
7.3.7 Upflow anaerobic sludge blanket (UASB) reactor 273
7.3.8 Hybrid anaerobic biofilm reactors 273
7.3.9 Two-stage anaerobic reactor 274
7.3.10 Anaerobic membrane bioreactor (AnMBR) 274
7.4 SUBSTRATE PRETREATMENT METHODS FOR ENHANCED AD 277
7.4.1 Mechanical pretreatment 277
7.4.2 Thermal pretreatment 277
7.4.3 Chemical pretreatment 279
7.4.4 Biological pretreatment 280
7.5 TECHNIQUES TO ENHANCE PHOSPHORUS RECOVERY DURING AD 281
7.5.1 Optimizing operational parameters 282
7.5.2 Chemical additives 282
7.6 BIOFUEL AND BIOENERGY 283
7.6.1 Biohydrogen 283
7.6.2 Production of electricity 286
7.7 MATHEMATICAL MODELING OF ANAEROBIC DIGESTION 287
7.8 CONCLUSION AND FUTURE DEVELOPMENTS 288
7.9 REFERENCES 288
Chapter 8: Greenhouse Gas Emissions from Membrane Bioreactors 293
ABSTRACT 293
8.1 INTRODUCTION 294
8.2 GHG EMISSION MECHANISMS 296
8.2.1 Direct emissions 296
8.2.1.1 Carbon dioxide – CO2 296
8.2.1.2 Methane – CH4 296
8.2.1.3 Nitrous oxide – N2O 296
8.2.1.4 Liquid/gas mass transfer 297
8.2.2 Indirect emissions 298
8.2.2.1 Energy consumption 298
8.2.2.2 Chemicals usage 299
8.3 GHG FROM MBR: LITERATURE OVERVIEW 299
8.4 MAIN FACTORS AFFECTING GHG EMISSIONS 304
8.4.1 Direct emissions 306
8.4.2 Indirect emissions 313
8.5 CONCLUSIONS 315
8.6 ACKNOWLEDGEMENTS 316
8.7 References 316
Chapter 9: Mixing - new insights and opportunities through computational fluid dynamics 321
ABSTRACT 321
9.1 INTRODUCTION – THE IMPORTANCE OF MIXING 321
9.2 “IDEAL MIXING” AND ITS FLAWS AND LIMITATIONS 322
9.4 COMPUTATIONAL FLUID DYNAMICS: BRIEF INTRODUCTION 326
9.4.1 State of the art of CFD in wastewater treatment 326
9.4.2 The use of CFD to increase our insight into reactor mixing 327
9.4.2.1 The case of the bioreactor of the Eindhoven WWTP 327
9.4.3 How can CFD be used to improve current mixing models? 328
9.4.4 Extending the CFD modelling approach to other unit processes in WWTPs 330
9.4.4.1 Bioprocesses 330
9.4.4.2 Physical-chemical processes 333
9.5 DISCUSSION 334
9.6 CONCLUSIONS 338
9.6 REFERENCES 338
Chapter 10: Making Water Operations Smarter 341
ABSTRACT 341
10.1 INTRODUCTION 342
10.2 TOWARDS SMART OPERATIONS 343
10.3 MEASUREMENTS 344
10.4 MONITORING AND ANALYSIS 346
10.4.1 Water supply monitoring 349
10.4.2 Analysing the user behaviour 350
10.5 CONTROL AND DECISION 350
10.5.1 Water treatment control 352
10.5.2 Water distribution systems 352
10.5.3 Wastewater transport and treatment 353
10.5.4 Integrated control of sewer networks and wastewater treatment plants 354
10.5.5 Computer realizations of control systems 354
10.5.6 Actuators 354
10.6 TRENDS TOWARDS DECENTRALIZATION 355
10.6.1 ICA in decentralized systems 356
10.6.2 Operator competence 358
10.7 CONCLUSIONS 358
10.8 REFERENCES 359
Chapter 11: Global sensitivity analysis in wastewater treatment modelling 363
ABSTRACT 363
11.1 INTRODUCTION 364
11.2 SENSITIVITY ANALYSIS METHODS 367
11.2.1 Derivative-based 370
11.2.2 Regression-based 370
11.2.2.1 Standardized regression coefficients 370
11.2.3 Screening 371
11.2.3.1 Morris screening 371
11.2.4 Variance-based 372
11.2.4.1 Sobol’ indices 373
11.2.4.2 Extended-FAST 373
11.3 GSA APPLICATIONS FOR WASTEWATER ENGINEERING 374
11.4 NUMERICAL SETTINGS 379
11.4.1 Open issues 379
11.4.2 Cut-off criteria for factors classification 382
11.4.3 GSA applications dealing with convergence analysis 382
11.5 USING MULTIPLE GSA METHODS 386
11.5.1 Comparison studies 386
11.5.2 Sequential use 387
11.5.3 Complementary use 387
11.6 SUMMARY AND OUTLOOK 388
11.7 ACKNOWLEDGEMENTS 389
11.8 REFERENCES 389
Index 395