Project #1273

Pathogen Destruction Efficiency In High-Temperature Digestion

Principal Investigator
Research Manager
Dr. Daniel M. Woltering, Ph.D.
East Bay Municipal Utility District
Microbes & Pathogens
Anaerobic Digestion


This project compiles information available worldwide on high-temperature digestion studies and develops practical and economical high-temperature digestion protocols that will yield Class A biosolids products and augment existing processes to further reduce pathogens in biosolids. In fact, this project resulted in a patent that was obtained by WERF for a cost-effective process to produce pathogen-free Class A biosolids. The project also presents comparable data on pathogen destruction and process performance for several thermophilic anaerobic digestion process configurations, and demonstrates at bench scale that two thermophilic anaerobic digestion process configurations can achieve Class A requirements at 50°C. Published by WERF. 194 pages. Soft cover.

Originally funded as WERF project 97-REM-2.