Learn how to design and implement successful aeration control systems
Combining principles and practices from mechanical, electrical, and environmental engineering, this book enables you to analyze, design, implement, and test automatic wastewater aeration control systems and processes. It brings together all the process requirements, mechanical equipment operations, instrumentation and controls, carefully explaining how all of these elements are integrated into successful aeration control systems. Moreover, Aeration Control System Design features a host of practical, state-of-the-technology tools for determining energy and process improvements, payback calculations, system commissioning, and more.
Author Thomas E. Jenkins has three decades of hands-on experience in every phase of aeration control systems design and implementation. He presents not only the most current theory and technology, but also practical tips and techniques that can only be gained by many years of experience. Inside the book, readers will find:
- Full integration of process, mechanical, and electrical engineering considerations
- Alternate control strategies and algorithms that provide better performance than conventional proportional-integral-derivative control
- Practical considerations and analytical techniques for system evaluation and design
- New feedforward control technologies and advanced process monitoring systems
Throughout the book, example problems based on field experience illustrate how the principles and techniques discussed in the book are used to create successful aeration control systems. Moreover, there are plenty of equations, charts, figures, and diagrams to support readers at every stage of the design and implementation process.
In summary, Aeration Control System Design makes it possible for engineering students and professionals to design systems that meet all mechanical, electrical, and process requirements in order to ensure effective and efficient operations.
THOMAS E. JENKINS, PE, is an owner and President of JenTech Inc., where he provides consultation services to the wastewater treatment industry, including control systems, aeration systems, energy conservation, blower systems, and process equipment design. He also cofounded Energy Strategies Corporation in 1984. Mr. Jenkins is a Professor of Practice in the Department of Civil and Environmental Engineering at the University of Wisconsin-Madison. He also teaches water and wastewater treatment classes in the University's Department of Engineering Professional Development.
Foreword
Acknowledgements
List of Figures
Chapter 1: Introduction
1.1 Basic Concepts and Objectives
1.2 Safety
1.3 The Importance of an Integrated Approach
1.4 Importance of Operator Involvement
1.5 The Benefits of Successful Aeration Process Automation
Chapter 2: Initial System Assessment2.1 Define Current Operations
2.2 Evaluate Process and Equipment
2.3 Benchmark Performance
2.4 Estimate Potential Energy Savings and Performance Improvement
2.5 Prepare Report
Chapter 3: Aeration Processes
3.1 Process Fundamentals
3.2 Loading Variations and Their Implications
3.3 Process Limitations and Their Impact on Control Systems
Chapter 4: Mechanical and Diffused Aeration Systems
4.1 Oxygen Transfer Basics
4.2 Types of Aerators
4.3 Savings Determinations
Chapter 5: Blowers and Blower Control
5.1 Common Application and Selection Concerns
5.2 Positive Displacement Blowers and Control Characteristics
5.3 Dynamic Blowers
Chapter 6: Piping Systems6.1 Design Considerations
6.2 Pressure Drop
6.3 Control Valve Selection
Chapter 7: Instrumentation
7.1 Common Characteristics and Electrical Design Considerations
7.2 Pressure
7.3 Temperature
7.4 Flow
7.5 Analytic Instruments
7.6 Motor Monitoring and Electrical Measurement
s7.7 Miscellaneous
Chapter 8: Final Control Elements
8.1 Valve Operators
8.2 Guide Vanes
8.3 Motor Basics
8.4 Motor Control
8.5 Variable Frequency Drives
Chapter 9: Control Loops and Algorithms
9.1 Control Fundamentals
9.2 Dissolved Oxygen Control
9.3 Aeration Basin Air Flow Control
9.4 Pressure Control
9.5 Most-Open-Valve Control
9.6 Blower Control and Coordination
9.7 Control Loop Timing Considerations
9.8 Miscellaneous Controls
Chapter 10: Control Components
10.1 Programmable Logic Controllers
10.2 Distributed Control Systems
10.3 Human Machine Interfaces
10.4 Control Panel Design Considerations
Chapter 11: Documentation
11.1 Specification Considerations
11.2 Data Lists
11.3 Process and Instrumentation Diagrams
11.4 Ladder and Loop Diagrams
11.5 One-Line Diagrams
11.6 Installation Drawings
11.7 Loop Descriptions
11.8 Operation and Maintenance Manuals
Chapter 12: Commissioning
12.1 Inspection
12.2 Testing
12.3 Tuning
12.4 Training
12.5 Measurement and Verification of Results
Chapter 13: Summary
13.1 Review of Integrated Design Procedure
13.2 Potential Problem Areas
13.3 Benefits
Appendix A: Example Problem Solutions
Appendix B: List of Equations and Variables
Bibliography
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