Written by experts in the field, this thoroughly updated third edition covers commonly used and emerging suspended and attached growth reactors. Drawing on their extensive academic and industrial experience, the authors discuss combined carbon and ammonia oxidation, activated sludge, biological nutrient removal, aerobic digestion, anaerobic processes, lagoons, trickling filters, rotating biological contactors, fluidized beds, and biologically aerated filters. They integrate the principles of biochemical processes with applications in the real world, communicating approaches to the conception, design, operation, and optimization of biochemical unit operations in a comprehensive yet lucid manner.