Anaerobic Sewage Treatment: Optimization of process and physical design of anaerobic and complementary processes

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Publication Date: 15/08/2019

Pages: 400

Binding: Paperback

ISBN13: 9781780409610

eISBN: 9781780409627

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Anaerobic digestion has been applied increasingly over the last decades for sewage treatment, especially in regions with a warm climate. In this book, it is shown that the Upflow Anaerobic Sludge Blanket (UASB) reactor is rightfully the most applied full-scale system, because it has a superior treatment efficiency and can be operated at a shorter retention time than other modern anaerobic wastewater treatment systems.


Anaerobic Sewage Treatment: Optimization of Process and Physical Design of Anaerobic and Complementary Processes focuses on process design and deals with start-up procedures and steady-state performance of UASB reactors, as well as the influence of operation on reactor performance. A process model is introduced that allows for optimized design of a UASB reactor as a function of sewage characteristics, temperature and sludge age. It enables to predict the reactor performance and optimize its performance for any set of sewage characteristics in terms of biogas production and residual organic material in the effluent and sludge, but it also highlights the limitations of anaerobic treatment. Design- and engineering flaws are discussed and the lessons learned transpire in the extensive chapter on the physical design of the reactor is extensively discussed, including the most important element the gas-liquid-solids separator. This will enable the reader to rationally select the dimensions of the reactor. Biogas production rates and -composition, treatment and utilization as well as rational procedures to estimate excess sludge production and design sludge drying beds are presented. Finally, post-treatment of anaerobic effluent in activated sludge systems and polishing ponds are discussed in depth.


Written primarily as a textbook to be used at higher education institutes for educational purposes, this important new publication will also of interest to practitioners and academics.


Readers of this book can download a spreadsheet for computer-aided design and optimization of UASB reactors, complete with sections for biogas, sludge and post-treatment, that will show the reader alternative designs of all aspects of UASB reactor design and complementary treatment units with every mouse click.

Preface

Authors

Acknowledgements

Symbols and Abbreviations

Contents in Brief

Chapter 1 - Sewage characteristics and treatment systems

Chapter 2 - Organic material & bacterial metabolism

Chapter 3 - Anaerobic sewage treatment systems: process design and performance

Chapter 4 - UASB reactor design guidelines

Chapter 5 - Value and stability of the pH in anaerobic digesters

Chapter 6 - Biogas generation in anaerobic digesters

Chapter 7 - Dewatering, Dehydration and drying of sludge

Chapter 8 - Aerobic post-treatment of anaerobic effluents

Chapter 9 - Post-treatment of digested sewage in polishing ponds

Chapter 10 - Spreadsheet design of anaerobic and complementary treatment plants

Appendix A1: Anaerobic biodegradability, specific methanogenic activity and sludge stability

Appendix A2: Sludge settleability

References

Adrianus van Haandel

Jeroen van der Lubbe

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