The aim of this monograph is to familiarize the reader with a complete mix activated sludge pilot reactor. It is by no means comprehensive and should thus work only as a starting point. However, by reading this "guide" the reader would be able to build, operate, control, and maintain an activated sludge pilot reactor, which could be used for different studies. Some parameters for the operation of the pilot have been set according to its dimensions. As a consequence the pilot should be built as described in this paper. These particular parameters are thus not described in detail because they...