This book includes: wastewater engineering: an overview; constituents in wastewater; analysis and selestion of wastewater flowrates and constituent loadings; introduction to process anslysis and selection; physical unit operations; chemical unit processes; fundamentals of biological treatment; suspended growth biological treatment processes; attached growth and combined biological treatment processes; anaerobic suspended and attached growth biological treatment processes; advanced wastewater treatment; disinfection processes; water reuse; treatment, reuse, and disposal of solids and biosolids; issues related to treatment-plant performance.