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Essential Water and Wastewater Calculations for Engineers and Operators

FOREWORD

PREFACE


ACKNOWLEDGMENTS

CHAPTER 1. FLUID FUNDAMENTALS

1.1







1.2




1.3
1.4
1.5

Fluid Properties
1.1.1 Mass and Weight
1.1.2 Mass Density
1.1.3 Specific Weight
1.1.4 Specific Gravity
1.1.5 Viscosity
1.1.6 Pressure
1.1.7 Vapor Pressure
Flow Classifications
1.2.1 Pressurized vs. Open-Channel Flow
1.2.2 Steady vs. Unsteady Flow
1.2.3 Uniform vs. Non-uniform Flow
1.2.4 Newtonian vs. Non-Newtonian Flow
Geometric Properties
Flow Rate
Generalized Equations of Steady Flow
1.5.1 Conservation of Mass
1.5.2 Conservation of Energy
1.5.3 Conservation of Momentum
 
CHAPTER 2. STEADY FLOW IN PIPES
2.1
2.2



2.3



2.4
2.5
2.6
2.7
Laminar vs. Turbulent Flow
Energy Losses
2.2.1 Darcy-Weisbach Equation
2.2.2 Hazen-Williams Equation
2.2.3 Form Losses
Types of Problems
2.3.1 Type I
2.3.2 Type II
2.3.3 Type III
Pipes in Series
Pipes in Parallel
Branching Pipes
Non-Newtonian Flow
References
 
CHAPTER 3. STEADY FLOW IN OPEN CHANNELS
3.1
3.2
3.3
3.4


3.5
3.6



3.7
3.8
Specific Energy
Critical Flow
Flow Transitions
Resistance to Flow
3.4.1 Chezy Formula
3.4.2 Manning Formula
Uniform Flow
Gradually-Varied Flow
3.6.1 Profile Classifications
3.6.2 Direct-Step Method
3.6.3 Standard-Step Method
Form Losses
Hydraulic Jump
References
 
CHAPTER 4. FLOW MEASUREMENT AND CONTROL
4.1.




4.2



Pipe Flow
4.1.1 Orifice
4.1.2 Venturi
4.1.3 Valves
4.1.4 Flow Manifolds
Free Surface Flow
4.2.1 Sharp-Crested Weir
4.2.2 Broad-Crested Weir
4.2.3 Underflow Gates
4.2.4 Orifice Flow
4.2.5 Parshall Flume
4.2.6 Distribution Channels and Side Weirs
4.2.7 Collection Channels
References
 
CHAPTER 5. PUMPING SYSTEMS

5.1
5.2
5.3
5.4
5.5
5.6
5.7

Head and Power Relationships
Specific Speed
Characteristic Curves
Affinity Laws
Cavitation
Pumps in Series
Pumps in Parallel
References
 
CHAPTER 6. WATER SUPPLY SYSTEMS
6.1
6.2







6.3

Demand Analysis
Treatment Processes
6.2.1 Screening
6.2.2 Coagulation
6.2.3 Sedimentation
6.2.4 Filtration
6.2.5 Disinfection
6.2.6 Softening
6.2.7 Aeration and Air Stripping
Distribution Networks
References
 
CHAPTER 7. WASTEWATER SYSTEMS

7.1
7.2 



7.3

Load Estimation
Treatment Processes
7.2.1 Screening and Communitors
7.2.2 Sedimenation
7.2.3 Secondary Treatment
Sewer Design
References
 
CHAPTER 8. STORM WATER SYSTEMS

8.1 





8.2




8.3


8.4



8.5


8.6


8.7


8.8


8.9
8.10


Precipitation
8.1.1  Design Storms
8.1.2 Point Rainfall
8.1.3 Time-Series Distribution of Rainfall
8.1.4 Spatial Distribution of Rainfall
8.1.5 Snow and Sonwmelt
Abstractions
8.2.1  Infiltration
8.2.2 Interception and Depression Storage
8.2.3 Evapotranspiration
8.2.4 Combined Loss Models
Time of Concentration
8.3.1  Overland Flow Models
8.3.2  Channel Models
Peak Flow Models
8.4.1  Rational  Method
8.4.2  NRCS TR-55 Method
8.4.3  USGS Regression Models
Continuous Flow Models
8.5.1  Natural Unit Hydrograph
8.5.2  Unit Hydrograph Synthesis
Hydrograph Routing
8.6.1  Storage Indication Method
8.6.2  Muskingum-Cunge Method
Gutter Flow
8.7.1  Conventional Gutters
8.7.2  Gutter-Flow Travel Time
Street Inlets
8.8.1  Inlet Capacity and Efficiency
8.8.2  Inlet Locations
Storm Sewer Design
Pollutant Loading
8.10.1  Event-Based Loading
8.10.2  ANNUAL LOADING
References
 

APPENDIX A. NOMENCLATURE

APPENDIX B. UNIT CONVERSIONS


INDEX

 
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