Provides personnel a new understanding of how lagoon and fixed film sewage treatment systems work

• Tested in short-course situations by the author over the last 20 years
• Directs the material in a practical manner at operators who are responsible for process control and troubleshooting
• Reduces the jargon, chemical equations, and kinetics that overwhelm most operators and laboratory technicians
• Provides necessary information for understanding biological and chemical conditions at the treatment process