Very few books are available on biogas (Bio-energy) recovery from wastewaters. An attempt has been made to consolidate the relevant materials on this subject including kinetics and future R and D. The book will be useful addition on biogas recovery and may be used by students, teachers, researchers and practicing engineers in India.
Methane recovery from wastewaters through anaerobic treatment is potentially one of the most attractive methods of solving the twin problems of energy production and pollution control in a cost effective manner. Attempts towards the satisfaction of energy needs of mankind in the biosphere warrants substantial external energy subsidies. Therefore, shift in energy-mix towards renewable is now recognized as one of the necessary measures for meeting the energy needs of the future.
The anaerobic process is in many ways ideal for waste treatment. It has several significant advantages over other available methods and is almost certainly assured of increased usage in the future. Anaerobic treatment is currently employed at most municipal treatment and also in some industrial sectors. However, in spite of the present significance and large future potential of this process, it has not yet enjoyed the favourable reputation it truly deserves. The primary obstacle has been a lack of fundamental understanding of the process, required both to explain and control the occasional upsets which may occur, and to extend successfully this process of the treatment of wide variety of Industrial wastewaters.
The authors have extensive and intensive experiences in the field of Wastewater Treatment and the present book will be useful addition in this area. In addition, it narrates the potential of biogas recovery from various types of wastewaters.
The authors acknowledge the co-operation and assistance of all persons involved directly or indirectly in the compilation of this book, and are sure that it will be well received by all.
The trust reposed by Daya Publishing House, a division of Astral International (P) Ltd., New Delhi, is thankfully acknowledge by the authors.

Preface (vii)

Chapter 1 Anaerobic Teachnologies for Wastewater Treatment 1

Chapter 2 Present Scenario of Anaerobic Systems in India 12

Chapter 3 Biodegradation of Industrial Organic Compounds by Anaerobic Processes 35

Chapter 4 Types of Anaerobic Reactor Systems 108

Chapter 5 Factors Affecting Anaerobic Processes 274

Chapter 6 Toxicity Effects in Anaerobic Processes 300

Chapter 7 Production of Hydrogen and Sulphur Recovery 330

Chapter 8 Kinetics of Anaerobic Treatment Processes 357

Chapter 9 Scale up Formulations for Anaerobic Systems 503

Chapter 10 Design, Operation and Maintenance 539

Chapter 11 Case Studies - Abroad and in India 591

Chapter 12 Future Research Areas in Anaerobic Processes 630

Ere Parteek Kaul has obtained his B Tech and M Tech from NIT, Nagpur. He has worked in several multinational industries in India and abroad and has number of patents and publications to his credit.

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