Sperling (sanitary and environmental engineering, Federal U. of Minas Gerais, Brazil) details the unit operations and processes associated with biological wastewater treatment. The volume is part of the Biological Wastewater Treatment series, which is based on the book Biological Wastewater Treatment in Warm Climate Regions, which has been updated and separated into smaller books for easier use. Presenting the technologies for urban wastewater treatment as applied to the specific condition of warm temperature is the main objective for the series, with discussion of related implications for design and operation. Technologies discussed can be applied in developing countries. They concentrate on off-site solutions, separate sewerage systems, and urban wastewater and biological treatment processes, while industrial wastewater treatment is not stressed. Topics covered in this volume--which partly serves as an introduction to the other volumes--are microbiology and ecology of wastewater treatment, reaction kinetics and reactor hydraulics, the conversion of organic and inorganic matter, sedimentation, and aeration. The book can be used by professionals and for postgraduate courses in civil and environmental engineering, environmental sciences, and related fields. No index is included. IWA in the UK now publishes many reports formerly published by AWWA Research Foundation (Denver); U.S. distribution by BookMasters. Annotation ©2007 Book News, Inc., Portland, OR (booknews.com)