Kinetics of Wastewater Treatment

Description

Kinetics of Wastewater Treatment contains the proceedings of a post-conference seminar held at the Technical University of Denmark, Copenhagen in 1978. Separating 10 papers presented in the seminar as chapters, this book begins with the conceptual basis of calcium phosphate precipitation in a denitrifying biofilm. The influence of pH and calcium ions upon phosphorus transformations in biological wastewater treatment plants; sewage treatment by activated sludge; orthokinetic flocculation of phosphate precipitates in a multicomponent reactor with non-ideal flow; and kinetics of phosphorus transformations in aerobic and anaerobic environments are then described. This text also looks into the chemical floc formation in wastewater treatment; temperature dependency of microbial reactions; the influence of some environmental factors on floc kinetics; kinetics of biological flocs; and two step precipitation of calcium phosphates.

Front Cover 2
Kinetics of Wastewater Treatment 5
Copyright Page 6
Table of Contents 7
CHAPTER 1. CALCIUM PHOSPHATE PRECIPITATION IN A DENITRIFYING BIOFILM — THE CONCEPTUAL BASIS 9
- INTRODUCTION 9
- ABSTRACT 9
- GENERAL REACTION DELINEATION AND ASSUMPTIONS 10
- KINETICS OF CALCIUM PHOSPHATE PRECIPITATION IN A BIOFILM WITH NO CALCITE PRESENT 12
- LENGTH OF TRANSITION ZONE 17
- KINCETICS OF CALCIUM PHOSPATE PRECIPITATION IN A BIOFILM WITH CALCITE PRECIPITATION 18
- DISCUSSION 21
- CONCLUSIONS 22
- REFERENCES 22
- List of symbols 25

Front Cover 2
Kinetics of Wastewater Treatment 5
Copyright Page 6
Table of Contents 7
CHAPTER 1. CALCIUM PHOSPHATE PRECIPITATION IN A DENITRIFYING BIOFILM — THE CONCEPTUAL BASIS 9
- INTRODUCTION 9
- ABSTRACT 9
- GENERAL REACTION DELINEATION AND ASSUMPTIONS 10
- KINETICS OF CALCIUM PHOSPHATE PRECIPITATION IN A BIOFILM WITH NO CALCITE PRESENT 12
- LENGTH OF TRANSITION ZONE 17
- KINCETICS OF CALCIUM PHOSPATE PRECIPITATION IN A BIOFILM WITH CALCITE PRECIPITATION 18
- DISCUSSION 21
- CONCLUSIONS 22
- REFERENCES 22
- List of symbols 25
CHAPTER 2. THE INFLUENCE OF pH AND CALCIUM IONS UPON PHOSPHORUS TRANSFORMATIONS IN BIOLOGICAL WASTEWATER TREATMENT PLANTS 27
- BACKGROUND 27
- ABSTRACT 27
- THEORY 28
- BASIC HYPOTHESIS 28
- EXPERIMENTAL EQUIPMENT AND PROCEDURE 34
- EXPERIMENTAL RESULTS 35
- ANALYSIS OF PUBLISHED LITERATURE DATA 37
- DISCUSSION 43
- REFERENCES 45
- CONCLUSIONS 45
- LIST OF SYMBOLS 47
CHAPTER 3. SEWAGE TREATMENT BY ACTIVATED SLUDGE — A MODEL WITH EMPHASIS ON OXYGEN CONSUMPTION AND SLUDGE COMPOSITION 49
- ABSTRACT 49
- INTRODUCTION 49
- MODEL FOR HETEROTROPHS 50
- MICROBICAL METABOLISM 51
- BALANCE OF SOLUBLE ORGANICS 53
- HYDROLYSIS 53
- OXYGEN CONSUMPTION 54
- SLUDGE TRANSFORMATIONS 55
- GROWTH 56
- DECAY 56
- PREDATION 57
- SLUDGE PRODUCTION AND SLUDGE AGES 57
- NITRIFICATION 60
- AEROBIC STABILIZATION 61
- ANAEROBIC PROCESSES 62
- DENITRIFICATION 62
- EFFECT OF LOADING VARIATIONS 63
- INERTS 64
- OXYGEN CONSUMPTION 64
- SLUDGE AGE 65
- CONCLUSION 65
- REFERENCES 66
- LIST OF SYMBOLS 67
CHAPTER 4. ORTHOKINETIC FLOCCULATION OF PHOSPHATE PRECIPITATES IN A MULTICOMPARTMENT REACTOR WITH NON-IDEAL FLOW 69
- ABSTRACT 69
- INTRODUCTION 69
- DEFINITIONS 70
- DERIVATION OF MATHEMATICAL MODEL 70
- EXPERIMENTAL INVESTIGATION 79
- EXPERIMENTAL RESULTS 83
- VALIDITY OF PROPOSED MODEL 86
- DISCUSSION OF FLOCCULATION PERFORMANCE AS GIVEN BY THE FLOCCULATION MODEL 89
- TAPERED FLOCCULATION 93
- CONCLUSIONS 93
- REFERENCES 95
CHAPTER 5. KINETICS OF PHOSPHORUS TRANSFORMATIONS IN AEROBIC AND ANAEROBIC ENVIRONMENTS 97
- INTRODUCTION 97
- Abstract 97
- ORGANISMS IN ACTIVATED SLUDGE WHICH ACCUMULATE POLY P 98
- THE SIGNIFICANCE OF THE ANAEROBIC ZONE IN POLY P ACCUMULATION 98
- PHOSPHORUS ACCUMULATION AND SUBSEQUENT UTILISATION 98
- P LIMITATION WITHIN THE CELL 99
- METABOLIC ACTIVITY IN STRICT AEROBES DURING ANAEROBIC STRESS CONDITIONS 100
- UPTAKE OF PHOSPHORUS IN THE AERATION ZONE 100
- FACTORS AFFECTING THE UTILISATION OF POLY P AND HENCE THE RAPID UPTAKE RATE 102
- FACILITIES FOR VARYING DEGREES OF STRESS IN THE ANAEROBIC ZONE INCORPORATED INTO FUTURE JOHANNESBURG PLANTS 106
- CONCLUSIONS 108
- PROMOTION OF INCREASED METABOLISM IN THE AEROBIC ZONE 108
- ACKNOWLEDGEMENTS 109
- REFERENCES 109
CHAPTER 6. CHEMICAL FLOC FORMATION IN WASTEWATER TREATMENT — AN INTRODUCTION 111
- 1. INTRODUCTION –DEFINITIONS 111
- 2. THE INITIAL CHEMICAL FORMATION OF CHEMICAL FLOCS 112
- REFERENCES 117
CHAPTER 7. TEMPERATURE DEPENDENCY OF MICROBIAL REACTIONS 119
- ABSTRACT 119
- KEYWORDS 119
- INTRODUCTION TO MICROBIAL REACTIONS 119
- STOICHIOMETRY 121
- RATE CONSIDERATIONS IN MICROBIAL PROCESSES 123
- POPULATION DYNAMICS 131
- PROCESS APPLICATIONS 132
- REFERENCES 136
- ACKNOWLEDGMENTS 136
CHAPTER 8. THE INFLUENCE OF SOME ENVIRONMENTAL FACTORS ON FLOC KINETICS 139
- KEYWORDS 139
- ABSTRACT 139
- NOMENCLATURE 148
- REFERENCES 149
CHAPTER 9. KINETICS OF BIOLOGICAL FLOCS 151
- INTRODUCTION 151
- ABSTRACT 151
- MASS TRANSFER IN ACTIVATED SLUDGE 154
- CONCLUSIONS 161
- BIBLIOGRAPHY 162
CHAPTER 10. TWO STEP PRECIPITATION OF CALCIUM PHOSPHATES 165
- INTRODUCTION 165
- ABSTRACT 165
- REFERENCES 177
AUTHOR INDEX 179
SUBJECT INDEX 181

Proceedings of a Post-Conference Seminar Held at the Technical University of Denmark, Copenhagen, 1978

Description

TOC

Reviews (0)