"Biological Wastewater Treatment in Warm Climate Regions" is a detailed guide on how to treat domestic sewage in regions with warm climates. The book covers various treatment processes used globally, focusing on simple, affordable, and sustainable solutions. It explains the basic principles of biological wastewater treatment, including design and operation. The book includes numerous illustrations, tables, and examples to aid understanding. It is divided into two volumes, covering topics like stabilisation ponds, anaerobic reactors, activated sludge, and sludge treatment. This book is valuable for engineers, biologists, chemists, and environmental scientists working in consulting companies, water authorities, and environmental agencies.