| Preface |
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xv | |
| Acknowledgments |
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xvii | |
| Authors |
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xix | |
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Chapter 1 Sewer Systems and Processes |
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1 | (24) |
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1.1 Introduction and Purpose |
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1 | (3) |
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1.2 Sewer Developments in a Historical Perspective |
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4 | (5) |
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1.2.1 Early Days of Sewers |
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4 | (1) |
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1.2.2 Sewers in Ancient Rome |
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5 | (1) |
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1.2.3 Sewers in Middle Ages |
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5 | (1) |
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1.2.4 Sewer Network of Today under Development |
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6 | (1) |
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1.2.5 Sanitation: Hygienic Aspects of Sewers |
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6 | (1) |
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1.2.6 Sewer and Its Adjacent Environment |
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7 | (1) |
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1.2.7 Hydrogen Sulfide in Sewers |
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8 | (1) |
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9 | (1) |
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1.3 Types and Performance of Sewer Networks |
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9 | (3) |
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1.3.1 Type of Sewage Collected |
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10 | (1) |
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1.3.2 Transport Mode of Sewage Collected |
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10 | (1) |
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1.3.3 Size and Function of Sewer |
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10 | (2) |
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1.4 Sewer as a Reactor for Chemical and Microbial Processes |
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12 | (3) |
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1.5 Water and Mass Transport in Sewers |
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15 | (7) |
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1.5.1 Advection, Diffusion, and Dispersion |
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16 | (1) |
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16 | (1) |
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1.5.1.2 Molecular Diffusion |
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17 | (1) |
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18 | (1) |
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1.5.2 Hydraulics of Sewers |
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18 | (3) |
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1.5.3 Mass Transport in Sewers |
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21 | (1) |
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1.6 Sewer Process Approach |
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22 | (3) |
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23 | (2) |
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Chapter 2 In-Sewer Chemical and Physicochemical Processes |
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25 | (50) |
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26 | (21) |
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2.1.1 Chemical Equilibrium and Potential for Reaction |
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26 | (3) |
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2.1.2 Redox Reactions in Sewers |
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29 | (2) |
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2.1.3 Redox Reactions and Thermodynamics |
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31 | (1) |
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2.1.3.1 Nature of Redox Reactions |
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31 | (1) |
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2.1.3.2 Redox Reactions and Thermodynamics |
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32 | (4) |
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2.1.3.3 Redox Reactions and Phase Changes |
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36 | (2) |
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2.1.4 Stoichiometry of Redox Reactions |
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38 | (1) |
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39 | (4) |
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2.1.4.2 Electron Equivalent of a Redox Reaction |
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43 | (1) |
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2.1.4.3 Balancing of Redox Reactions |
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43 | (4) |
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2.2 Kinetics of Microbiological Systems |
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47 | (12) |
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2.2.1 Kinetics of Homogeneous Reactions |
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48 | (1) |
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2.2.1.1 Zero-Order Reaction |
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48 | (1) |
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2.2.1.2 First-Order Reaction |
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49 | (1) |
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2.2.1.3 n-Order Reactions |
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50 | (1) |
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2.2.1.4 Growth Limitation Kinetics |
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50 | (4) |
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2.2.2 Kinetics of Heterogeneous Reactions |
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54 | (1) |
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2.2.2.1 Biofilms and Biofilm Kinetics |
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54 | (4) |
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2.2.2.2 Kinetics of Hydrolysis |
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58 | (1) |
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2.3 Temperature Dependency of Microbial, Chemical, and Physicochemical Processes |
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59 | (2) |
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2.4 Acid--Base Chemistry in Sewers |
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61 | (8) |
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61 | (2) |
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2.4.1.1 Air--Water Equilibrium |
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63 | (1) |
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2.4.1.2 Water Phase Equilibria |
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63 | (1) |
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2.4.1.3 Water--Solid Equilibrium |
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64 | (1) |
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2.4.1.4 General Physicochemical Expressions |
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64 | (1) |
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2.4.2 Alkalinity and Buffer Systems |
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65 | (4) |
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2.5 Iron and Other Heavy Metals in Sewers |
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69 | (6) |
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2.5.1 Speciation of Iron and Sulfide |
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69 | (1) |
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2.5.2 Sulfide Control by Addition of Iron Salts |
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70 | (2) |
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2.5.3 Metals in Sewer Biofilms |
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72 | (1) |
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72 | (3) |
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Chapter 3 Microbiology in Sewer Networks |
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75 | (34) |
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3.1 Wastewater: Sources, Flows, and Constituents |
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75 | (8) |
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3.1.1 Sources and Flows of Wastewater |
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76 | (1) |
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77 | (1) |
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3.1.3 An Overview of the Microbial System in Wastewater of Sewers |
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78 | (5) |
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3.2 Microbial Reactions and Quality of Substrate |
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83 | (26) |
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3.2.1 Aerobic and Anoxic Microbial Processes |
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83 | (1) |
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3.2.2 Anaerobic Microbial Processes |
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84 | (4) |
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3.2.3 Microbial Uptake of Substrate and Hydrolysis |
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88 | (1) |
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3.2.4 Particulate and Soluble Substrate |
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89 | (1) |
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3.2.5 Organic Constituents in Wastewater of Sewer Networks |
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90 | (5) |
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3.2.6 Wastewater Compounds as Model Parameters |
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95 | (4) |
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3.2.7 Biofilm Characteristics and Interactions with the Bulk Water Phase |
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99 | (3) |
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3.2.8 Sewer Sediment Characteristics and Processes |
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102 | (1) |
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3.2.8.1 Physical Characteristics and Processes |
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102 | (1) |
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3.2.8.2 Chemical Characteristics |
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103 | (1) |
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3.2.8.3 Microbial Characteristics and Processes |
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103 | (2) |
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105 | (4) |
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Chapter 4 Sewer Atmosphere: Odor and Air--Water Equilibrium and Dynamics |
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109 | (58) |
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4.1 Air--Water Equilibrium |
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111 | (12) |
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4.1.1 Basic Characteristics of the Air--Water Equilibrium |
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111 | (1) |
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4.1.1.1 Descriptors for Volatile Substances at the Air--Water Interface |
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111 | (2) |
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4.1.1.2 Partitioning Coefficient |
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113 | (1) |
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4.1.1.3 Relative Volatility |
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114 | (1) |
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114 | (1) |
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4.1.2.1 Formulation of Henry's Law |
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114 | (4) |
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4.1.2.2 Temperature Dependency of Henry's Law Constant |
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118 | (1) |
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4.1.3 Water--Air Equilibrium for Dissociated Substances |
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119 | (4) |
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4.2 Air--Water Transport Processes |
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123 | (8) |
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4.2.1 Overview of Theoretical Approaches |
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123 | (1) |
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123 | (1) |
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4.2.2.1 Expressions for Mass Transfer across Air--Water Interface |
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124 | (2) |
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4.2.2.2 Molecular Diffusion at the Air--Water Interface |
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126 | (2) |
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4.2.2.3 General Characteristics of Air--Water Mass Transfer Coefficients |
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128 | (3) |
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4.3 Sewer Atmosphere and Its Surroundings |
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131 | (15) |
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4.3.1 Odors: Properties and Characteristics |
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132 | (3) |
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4.3.2 Occurrence of Volatile Substances in Sewer Atmosphere |
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135 | (3) |
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4.3.3 Odorous, Corroding, and Toxic Substances in Sewers |
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138 | (3) |
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4.3.4 Air Movement and Ventilation in Sewers |
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141 | (1) |
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141 | (2) |
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4.3.4.2 Air Movement and Wastewater Drag |
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143 | (1) |
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4.3.4.3 Experimental Techniques for Monitoring Air Movement and Ventilation |
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144 | (1) |
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4.3.5 Odor and Health Problems of Volatile Compounds in Sewers |
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144 | (2) |
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4.3.6 Odorous Substances in the Urban Atmosphere |
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146 | (1) |
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4.4 Reaeration in Sewer Networks and Its Role in Predicting Air--Water Mass Transfer |
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146 | (9) |
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4.4.1 Solubility of Oxygen |
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147 | (1) |
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4.4.2 Empirical Models for Air--Water Oxygen Transfer in Sewer Pipes |
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148 | (2) |
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4.4.3 Mass Transfer Rates for Volatile Substances Relative to Reaeration Rate |
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150 | (1) |
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4.4.4 Air--Water Mass Transfer at Sewer Falls and Drops |
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151 | (1) |
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4.4.4.1 Mass Transfer at Sewer Falls and Drops |
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152 | (1) |
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4.4.4.2 Reaeration at Sewer Falls and Drops |
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153 | (2) |
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4.5 Acid--Base Characteristics of Wastewater in Sewers: Buffers and Phase Exchanges |
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155 | (12) |
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4.5.1 Buffer Systems in Wastewater of Sewers |
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155 | (4) |
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4.5.2 Impacts of Volatile Substances on pH of Wastewater |
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159 | (2) |
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4.5.3 Water--Solid Interactions and Impacts on pH Value |
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161 | (1) |
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161 | (1) |
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162 | (5) |
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Chapter 5 Aerobic and Anoxic Sewer Processes: Transformations of Organic Carbon, Sulfur, and Nitrogen |
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167 | (48) |
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5.1 Aerobic, Heterotrophic Microbial Transformations in Sewers |
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167 | (2) |
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5.2 Illustration of Aerobic Transformations in Sewers |
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169 | (4) |
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5.2 A Concept for Aerobic Transformations of Wastewater in Sewers |
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173 | (9) |
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5.2.1 Conceptual Basis for Aerobic Sewer Processes |
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173 | (2) |
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5.2.2 A Concept for Microbial Transformations in Sewers |
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175 | (7) |
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5.3 Formulation in Mathematical Terms of Aerobic Heterotrophic Processes in Sewers |
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182 | (7) |
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5.3.1 Expressions for Sewer Processes: Options and Constraints |
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182 | (1) |
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5.3.2 Mathematical Expressions for Aerobic, Heterotrophic Processes in Sewers |
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183 | (1) |
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5.3.2.1 Heterotrophic Growth of Suspended Biomass and Growth-Related Oxygen Consumption |
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183 | (1) |
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5.3.2.2 Maintenance Energy Requirement of Suspended Biomass |
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184 | (1) |
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5.3.2.3 Heterotrophic Growth and Respiration of Sewer Biofilms |
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184 | (3) |
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187 | (2) |
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189 | (1) |
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5.4 DO Mass Balances and Variations in Gravity Sewers |
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189 | (6) |
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5.5 Aerobic Sulfide Oxidation |
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195 | (6) |
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5.5.1 Sulfide Oxidation in Wastewater of Sewers |
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195 | (1) |
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5.5.1.1 Stoichiometry of Sulfide Oxidation |
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196 | (1) |
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5.5.1.2 Kinetics of Sulfide Oxidation in Wastewater |
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196 | (3) |
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5.5.1.3 Sulfide Oxidation under Field Conditions |
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199 | (1) |
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5.5.2 Sulfide Oxidation in Sewer Biofilms |
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200 | (1) |
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5.6 Anoxic Transformations in Sewers |
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201 | (14) |
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5.6.1 Relations between Anoxic and Aerobic Sewer |
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201 | (2) |
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5.6.2 Anoxic Transformations in the Water Phase |
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203 | (1) |
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5.6.2.1 Heterotrophic Anoxic Processes |
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203 | (2) |
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5.6.2.2 Autotrophic Anoxic Sulfide Oxidation |
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205 | (1) |
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5.6.3 Anoxic Heterotrophic Transformations in |
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206 | (1) |
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5.6.4 Prediction of Nitrate Removal under Anoxic |
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206 | (1) |
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5.6.5 Concept for Heterotrophic Anoxic Transformations |
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207 | (3) |
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210 | (5) |
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Chapter 6 Anaerobic Sewer Processes: Hydrogen Sulfide and Organic Matter Transformations |
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215 | (42) |
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6.1 Hydrogen Sulfide in Sewers: A Worldwide Occurring Problem |
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216 | (1) |
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6.2 Overview of Basic Knowledge on Sulfur-Related Processes |
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217 | (1) |
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6.3 Introduction to Hydrogen Sulfide in Sewer Networks |
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218 | (7) |
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6.3.1 Basic Principles of Sulfur Cycle in Sewers |
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218 | (2) |
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6.3.2 Basic Aspects and Stoichiometry of Hydrogen Sulfide Formation |
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220 | (1) |
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6.3.3 Conditions Affecting Formation and Buildup of Sulfide |
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221 | (1) |
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222 | (1) |
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6.3.3.2 Quality and Quantity of Biodegradable Organic Matter |
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223 | (1) |
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223 | (1) |
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223 | (1) |
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6.3.3.5 Area/Volume Ratio of Sewer Pipes |
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223 | (1) |
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224 | (1) |
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6.3.3.7 Anaerobic Residence Time |
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225 | (1) |
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6.4 Predicting Models for Sulfide Formation |
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225 | (13) |
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6.4.1 Sulfide as a Sewer Phenomenon: 1900--1940 |
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225 | (1) |
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6.4.2 Toward a New Understanding of Sulfide in Sewers: 1940--1945 |
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226 | (2) |
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6.4.3 Empirical Sulfide Prediction and Effect Models: 1945--1995 |
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228 | (1) |
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6.4.3.1 Type I Sulfide Prediction Models |
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229 | (2) |
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6.4.3.2 Type II Sulfide Prediction Models |
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231 | (7) |
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6.5 Sulfide-Induced Corrosion of Concrete Sewers |
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238 | (7) |
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6.5.1 Concrete Corrosion as a Sewer Process Phenomenon |
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239 | (2) |
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6.5.2 Prediction of Hydrogen Sulfide-Induced Corrosion |
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241 | (1) |
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6.5.2.1 Traditional Approach of Predicting Concrete Corrosion |
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241 | (1) |
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6.5.2.2 A Process-Related Approach for Prediction of Concrete Corrosion |
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242 | (3) |
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6.6 Metal Corrosion and Treatment Plant Impacts |
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245 | (1) |
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6.7 Anaerobic Microbial Transformations in Sewers |
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245 | (7) |
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6.7.1 Anaerobic Transformations of Organic Matter in Sewers |
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246 | (3) |
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6.7.2 Conceptual Formulations of Central Anaerobic Processes in Sewers |
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249 | (1) |
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6.7.2.1 Anaerobic Hydrolysis |
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249 | (1) |
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250 | (1) |
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6.1.23 Anaerobic Decay of Heterotrophic Biomass |
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250 | (1) |
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6.7.2.4 Sulfate Reduction |
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250 | (2) |
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6.8 Integrated Aerobic--Anaerobic Concept for Microbial Transformations |
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252 | (5) |
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253 | (4) |
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Chapter 7 Sewer Processes and Mitigation: Water and Gas Phase Control Methods |
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257 | (24) |
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7.1 Overview of Mitigation Methods |
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258 | (3) |
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7.1.1 Inhibition or Reduction of Sulfide Formation |
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259 | (1) |
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7.1.2 Reduction of Generated Sulfide |
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259 | (1) |
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7.1.3 Sewer Gas Reduction and Dilution |
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260 | (1) |
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7.2 Sewer Process Control Procedures |
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261 | (5) |
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7.2.1 General Aspects of Sewer Process Controls |
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261 | (1) |
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7.2.1.1 Design and Management Procedures for Active Control of Sewer Gas Problems |
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262 | (1) |
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7.2.1.2 Design Procedures for Passive Control of Sewer Gas Problems |
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263 | (1) |
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7.2.1.3 Operational Procedures for Control of Sewer Gas Problems |
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264 | (2) |
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7.3 Selected Measures for Control of Sewer Gases |
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266 | (12) |
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7.3.1 Measures Aimed at Preventing Anaerobic Conditions or the Effect Hereof |
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266 | (1) |
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267 | (1) |
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7.3.1.2 Injection of Pure Oxygen |
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267 | (1) |
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7.3.1.3 Addition of Nitrate |
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268 | (1) |
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7.3.2 Chemical Precipitation of Sulfide |
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268 | (3) |
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7.3.3 Chemical Oxidation of Sulfide |
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271 | (1) |
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7.3.3.1 Chlorine Compounds |
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272 | (1) |
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7.3.3.2 Hydrogen Peroxide |
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272 | (1) |
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272 | (1) |
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273 | (1) |
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7.3.4 Alkaline Substances Increasing pH |
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273 | (1) |
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7.3.5 Addition of Biocides |
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274 | (1) |
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274 | (1) |
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7.3.7 Treatment and Management of Vented Sewer Gas |
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274 | (1) |
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7.3.7.1 Wet and Dry Scrubbing |
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275 | (1) |
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7.3.7.2 Biological Treatment of Vented Sewer Gas |
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276 | (1) |
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7.3.7.3 Activated Carbon Adsorption |
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277 | (1) |
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7.3.7.4 Forced Ventilation and Dilution |
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277 | (1) |
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7.3.8 Evolving Mitigation Methods |
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277 | (1) |
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278 | (3) |
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279 | (2) |
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Chapter 8 Sewer Process Modeling: Concepts and Quality Assessment |
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281 | (16) |
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8.1 Types of Process Models |
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282 | (4) |
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8.1.1 Model Validation, Calibration, and Verification |
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283 | (1) |
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283 | (1) |
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284 | (1) |
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284 | (1) |
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284 | (1) |
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8.1.3 Deterministic Models |
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285 | (1) |
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286 | (1) |
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8.2 Deterministic Sewer Process Model Approach |
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286 | (7) |
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8.2.1 Principle of a Sewer Process Model |
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287 | (4) |
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8.2.2 The Principle of a Solution to a Sewer Process Model |
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291 | (2) |
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8.3 Additional Modeling Approaches |
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293 | (4) |
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8.3.1 Modeling at Catchment Scale |
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293 | (1) |
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294 | (3) |
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Chapter 9 WATS: A Sewer Process Model for Water, Biofilm, and Gas Phase Transformations |
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297 | (18) |
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9.1 WATS Model: An Overview |
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298 | (1) |
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9.2 Process Elements of WATS Model |
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299 | (6) |
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9.2.1 Process Matrix for Aerobic, Heterotrophic Organic Matter Transformations |
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299 | (1) |
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9.2.2 Process Matrix for Anoxic, Heterotrophic Transformations |
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300 | (1) |
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9.2.3 Process Matrix for Anaerobic, Heterotrophic Transformations |
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301 | (1) |
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9.2.4 Process Matrix for the Sulfur Cycle |
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302 | (2) |
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9.2.5 Acid---Base Characteristics and WATS Modeling |
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304 | (1) |
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9.3 Water and Gas Phase Transport in Sewers |
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305 | (1) |
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9.4 Sewer Network Data and Model Parameters |
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305 | (2) |
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9.4.1 Sewer Network Data and Flows |
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306 | (1) |
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9.4.2 Wastewater Composition |
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306 | (1) |
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9.4.3 WATS Process Model Parameters |
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306 | (1) |
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9.5 Specific Modeling Characteristics |
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307 | (2) |
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9.5.1 Process Contents of WATS Model |
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307 | (1) |
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9.5.2 WATS Modeling Procedures |
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308 | (1) |
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9.6 Examples of WATS Modeling Results |
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309 | (6) |
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312 | (3) |
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Chapter 10 Methods for Sewer Process Studies and Model Calibration |
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315 | (36) |
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10.1 Methods for Bench Scale, Pilot Scale, and Full Scale Studies |
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316 | (10) |
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10.1.1 General Methodology for Sewer Process Studies |
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316 | (1) |
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10.1.1.1 Bench Scale Analysis and Studies |
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316 | (1) |
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10.1.1.2 Pilot Plant Studies |
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316 | (2) |
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10.1.1.3 Field Experiments and Monitoring |
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318 | (1) |
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10.1.2 Sampling, Monitoring, and Handling Procedures |
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319 | (1) |
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10.1.3 Oxygen Uptake Rate Measurements of Bulk Water |
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319 | (4) |
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10.1.4 Measurements in Sewer Networks |
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323 | (1) |
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323 | (1) |
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10.1.4.2 Measurement of Reaeration |
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324 | (1) |
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10.1.4.3 In Situ Measurement of Biofilm Respiration |
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324 | (1) |
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10.1.4.4 Gas Phase Movement and Ventilation in Gravity Sewers |
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325 | (1) |
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325 | (1) |
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10.2 Methods for Determination of Substances and Parameters for Sewer Process Modeling |
|
|
326 | (20) |
|
10.2.1 Determination of Central Model Parameters |
|
|
328 | (5) |
|
10.2.2 Determination of the Biodegradability of Wastewater Organic Matter |
|
|
333 | (3) |
|
10.2.3 Determination of Model Parameters by Iterative Simulation |
|
|
336 | (1) |
|
10.2.4 Calibration and Verification of the WATS Sewer Process Model |
|
|
336 | (4) |
|
10.2.5 Estimation of Model Parameters for Anaerobic Transformations in Sewers |
|
|
340 | (1) |
|
10.2.5.1 Volatile Fatty Acids |
|
|
341 | (1) |
|
10.2.5.2 Sulfide and Sulfide Formation Rate |
|
|
342 | (1) |
|
10.2.5.3 Determination of the Formation Rate for Readily Biodegradable Substrate in Wastewater under Anaerobic Conditions |
|
|
342 | (4) |
|
|
|
346 | (5) |
|
|
|
347 | (4) |
|
Chapter 11 Applications: Sewer Process Design and Perspectives |
|
|
351 | (12) |
|
11.1 Wastewater Design: An Integrated Approach for Wastewater Treatment |
|
|
352 | (1) |
|
11.2 Sewer Structural and Operational Impacts on Wastewater Quality |
|
|
353 | (3) |
|
11.3 Sewer Processes: Final Comments and Perspectives |
|
|
356 | (7) |
|
11.3.1 Wastewater Processes in General |
|
|
356 | (1) |
|
11.3.2 In-Sewer Processes and Wet Weather Discharges of Wastewater |
|
|
357 | (3) |
|
11.3.3 In-Sewer Processes and Sustainable Urban Wastewater Management |
|
|
360 | (1) |
|
|
|
361 | (2) |
| Appendix A Units and Nomenclature |
|
363 | (6) |
| Appendix B Definitions and Glossary |
|
369 | (2) |
| Appendix C Acronyms |
|
371 | (2) |
| Index |
|
373 | |