Providing step-by-step procedures for planning, design, construction, and operation, this book discusses technical and non-technical issues commonly found in the planning and design reports prepared by practicing engineers for wastewater treatment facilities. Topics include facility planning, process description, process selection logic, mass balance calculations, design calculations, and concepts for equipment sizing. Theory, design, operation and maintenance, troubleshooting, equipment selection, and specifications are integrated for each treatment process. This book aims to delineate this information for wide availability and use by students and practicing engineers.