Academic researchers and professionals in the waste water industry in Brazil look at the characteristics of sludge as well as its production, treatment by various methods, and disposal to various places for various purposes. They also consider environmental and health issues. The collection can be used as a textbook in graduate courses in civil engineering, environmental engineering, environmental sciences, and related course. There is no index. It is the final volume in a series that basically reproduces but also updates material in Biological Wastewater Treatment in Warm Climate Regions to make the material easier to purchase and use, especially in non-industrialized countries. IWA in Britain now publishes many reports formerly published by AWWA Research Foundation in Denver. Distributed in the US by BookMasters. Annotation ©2007 Book News, Inc., Portland, OR (booknews.com)