Aeration Control System Design A Practical Guide to Energy and Process Optimization

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

2.1 Define Current Operations

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

3.3 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

Chapter 5: Blowers and Blower Control

5.1 Common Application and Selection Concerns

5.3 Dynamic Blowers

6.1 Design Considerations

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

7.7 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

9.3 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

10.3 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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