Description
This class provides an overview of the bacteria and methanogens involved in methanogenesis. The overview includes hydrolysis, fermentation, acetogenesis, and methane production. We will review start up, recovery from inhibition and toxicity, acceptable operational conditions, and monitoring requirements. The monitoring requirements include not only digester sludge but also digester feed sludge. Attention is placed upon specific monitoring requirements for biogas analysis; ORP; temperature and pH; % VSS; minor and critical nutrients; and digester decant. A checklist of analytical tests for identifying an unstable anaerobic digester is provided.

Credit
3 TCH (Wastewater)

Instructor
Michael Gerardi (Michael Gerardi & Associates, LLC)

Proctor
Elijah Lemieux (Vermont Rural Water Association)

Advanced Wastewater Treatment Series 
This class is part of the Advanced Wastewater Treatment Series. Classes in this series are intended for experienced wastewater operators. It is recommended that you have attended the Basic Wastewater Course, passed a wastewater certification exam, and/or worked a number of years at a wastewater treatment facility before taking these advanced classes.

These classes are designed for operators who are looking to enhance their understanding of wastewater treatment; preparing for a Grade 3, 4, or 5 wastewater exam; or seeking a management position at a wastewater treatment facility. There is no formal enrollment in the Advanced Wastewater Treatment Series—just sign up for each class you want to take. These classes will have “Advanced WW Series” in the title. Find more information here.