Summarizes current technologies with US and European examples

Connects aeration to plant capital and operating costs

Presents applied design calculations for plant upgrading

Covers deep-tank aeration, high-purity oxygen, and carousel systems

Shows how aeration systems are used in the natural environment with full-scale results

Explains oxygen transfer as related to different processes

The immense environmental challenges facing the world now and in years to come can only be met through marshalling the talents of the best environmental engineers and scientists, and through the use of innovative, cost-effective solutions. Written by three leading aeration experts, Aeration: Principles and Practice, covers the principles and practice of aeration, a unit process critical to the performance of activated sludge treatment and to the budget of wastewater plants.

This reference presents the state of the art in aeration, using examples from a variety of facilities in the USA and Europe. The authors investigate conventional and deep-tank aeration systems for BOD removal and nitrification, as well as high-purity oxygen systems. Operating and capital costs, as well as energy use data are presented together with design information allowing the adaptation of new aeration technologies to plants of diverse size.

Both practitioners and advanced students of wastewater management will appreciate the detailed presentation of oxygen transfer principles, especially as they are illustrated in numerous applications. With the information presented in this book engineers and managers will be able to understand and monitor the efficiency of existing aeration systems and to develop strategies for process improvement.

Introduction
Purpose
Intended Audience
Bibliography

Principles
Mass Transfer Principles
Application to Oxygen Transfer
Design Equations
Nomenclature
Bibliography

Diffused Aeration
Introduction
Description of Diffused Aeration Systems
Diffused Air System Layouts
Performance of Diffused Air Systems
Diffused Air System Design
Nomenclature
Bibliography

Deep Tank Aeration with Blower and Compressor Considerations
Introduction
Oxygen Transfer in Deep Tanks
Aeration Efficiency in Deep Tanks
Nomenclature
Bibliography

Surface and Mechanical Aeration
Introduction
Low-Speed Surface Aerators
High Speed or Motor Speed Aerators
Horizontal Rotors
Submerged Turbine Aerators
Aspirating Aerators
Factors Affecting Performance
Performance of Mechanical Aeration Devices
Design
Nomenclature
Bibliography

High Purity Oxygen Aeration
History
Covered Tank Systems
Open Tank Systems - Floating Cover
Nomenclature
Bibliography

Testing and Measurement
Introduction
Aeration Tank Mass Balance
Clean Water Performance Testing
In-Process Oxygen Transfer Testing
Quality Assurance for Fine-Pore Diffusers
Characteristics of Diffused Air Materials
Nomenclature
Bibliography

Aeration Systems in Natural Waters
Aeration - Streams and Rivers
Metropolitan Water District of Greater Chicago: Full-scale Instream Aeration Systems
Nomenclature
Bibliography

Operation and Maintenance
Operation
System Monitoring
Aeration System Control
Maintenance - Diffused Air
Maintenance - Mechanical Aeration
Nomenclature
Bibliography

Index