Aeration control system design : a practical guide to energy and process optimization / Thomas E. Jenkins, PE, JenTech Inc.

Includes bibliographical references and index.

"Proper engineering and execution of aeration control systems is of prime importance to treatment plants, representing a significant savings in labor and energy costs. Taking an integrated, cross-disciplinary approach to this critical process, Aeration Control System Design comprehensively addresses the concept and system design of aeration activated wastewater treatment. Covering complete treatment of aeration system controls, processes, and instrumentation, this hands-on text provides civil and environmental engineers, mechanical engineers, and electrical/instrumentation engineers with theoretical and mathematical treatment of case histories, complete with design procedures and analysis methodology"-- Provided by publisher.

Machine generated contents note: 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 Assessment 2.1 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 Concern s 5.2 Positive Displacement Blowers and Control Characteristics 5.3 Dynamic Blowers Chapter 6: Piping Systems 6.1 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 s 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 9.2 Dissolved Oxygen Control 9.3 Aeration Basin Air Flow Contro l 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 Benefit s Appendix A: Example Problem Solutions Appendix B: List of Equations and Variables Bibliography.

Print version record and CIP data provided by publisher.

Aeration Control System Design: A Practical Guide to Energy and Process Optimization; Contents; Preface; Acknowledgments; List of Figures; List of Tables; 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; 1.5.1 Energy Cost Reduction; 1.5.2 Treatment Performance; 1.5.3 Improved Equipment Life; Example Problems; 2 Initial System Assessment; 2.1 Define Current Operations; 2.1.1 Energy Cost; 2.1.2 Energy Consumption Patterns.

2.1.3 Influent and Effluent Process Parameters2.1.4 Treatment Performance; 2.2 Evaluate Process and Equipment; 2.3 Benchmark Performance; 2.4 Estimate Potential Energy Savings and Performance Improvement; 2.5 Prepare Report; Example Problems; 3 Aeration Processes; 3.1 Process Fundamentals; 3.1.1 Peripheral Equipment and Processes; 3.1.2 BOD Removal; 3.1.3 Nitrification; 3.1.4 Denitrification; 3.2 Loading Variations and Their Implications; 3.3 Process Limitations and Their Impact on Control Systems; Example Problems; 4 Mechanical and Diffused Aeration Systems; 4.1 Oxygen Transfer Basics.

4.2 Types of Aerators4.2.1 Mechanical Aerators; 4.2.2 Mechanical Aeration Control Techniques; 4.2.3 Diffused Aeration; 4.2.4 Diffused Aeration Control Techniques; 4.3 Savings Determinations; Example Problems; 5 Blowers and Blower Control; 5.1 Common Application and Selection Concerns; 5.1.1 Properties of Air; 5.1.2 Effect of Humidity; 5.1.3 Pressure Effects; 5.1.4 Common Performance Characteristics; 5.2 Positive Displacement Blowers and Control Characteristics; 5.2.1 Types and Characteristics; 5.2.2 Lobe Type PD Blowers; 5.2.3 Screw Blowers.

5.2.4 Control and Equipment Protection Considerations5.3 Dynamic Blowers; 5.3.1 Types and Characteristics; 5.3.2 Multistage Centrifugal Blowers; 5.3.3 Geared Single Stage Centrifugal Blowers; 5.3.4 Turbo Blowers; 5.3.5 Control and Protection Considerations; Example Problems; 6 Piping Systems; 6.1 Design Considerations; 6.1.1 Layout; 6.1.2 Pipe Size; 6.1.3 Pipe Material; 6.2 Pressure Drop; 6.3 Control Valve Selection; Example Problems; 7 Instrumentation; 7.1 Common Characteristics and Electrical Design Considerations; 7.2 Pressure; 7.3 Temperature; 7.4 Flow; 7.5 Analytic Instruments.

7.5.1 Dissolved Oxygen7.5.2 Offgas Analysis; 7.5.3 pH and ORP; 7.6 Motor Monitoring and Electrical Measurements; 7.7 Miscellaneous; Example Problems; 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; Example Problems; 9 Control Loops and Algorithms; 9.1 Control Fundamentals; 9.1.1 Discrete Controls; 9.1.2 Analog Control; 9.1.3 Proportional-Integral-Derivative; 9.1.4 Deadband Controllers; 9.1.5 Floating Control; 9.2 Dissolved Oxygen Control; 9.3 Aeration Basin Air Flow Control; 9.4 Pressure Control.