1. Chemical Concepts -- 2. Biological Concepts -- 3. Mass Balances, Flow Models, and Reactors -- 4. Water Quantities and Water Quality -- 5. Wastewater Quantities and Wastewater Quality -- 6. Water and Wastewater Treatment Plants -- 7. Preliminary Unit Operations and Processes -- 8. Coagulation and Flocculation -- 9. Sedimentation -- 10. Filtration -- 11. Ammonia Removal -- 12. Adsorption -- 13. Ion Exchange -- 14. Membrane Processes -- 15. Activated Sludge -- 16. Oxygen Transfer and Mixing -- 17. Trickling Filters and Rotary Biological Contactors -- 18. Stabilization Ponds and Aerated Lagoons -- 19. Anaerobic Digestion -- 20. Aerobic Digestion -- 21. Solids Handling -- 22. Land Treatment Of Municipal Wastewater and Sludges -- 23. Other Unit Operations and Processes -- 24. Disinfection -- Appendix A Conversions and Measures -- Appendix B International Atomic Weights of Elements -- Appendix C Density and Viscosity of Water.