Aquatic plants in a laboratory
Project #1124

Identifying & Controlling Odor in the Municipal Wastewater Environment Phase 3: Biosolids Processing Modifications for Cake

Principal Investigator
Research Manager
Dr. Daniel M. Woltering, Ph.D.
Sanitation Districts of Los Angeles County
Odor Control


This research sought ways to reduce odors from dewatered biosolids cake, thereby reducing negative odor impacts on the public when the cake biosolids or their derivatives are stored, transported, and land applied. The goal was to provide a roadmap to facilities looking for ways to optimize biosolids processing and reduce biosolids cake odors. Reduced odors could open the WWTP's dewatered biosolids cake to other recycling or disposal opportunities that are currently not used, such as site storage, land application, composting, or heat-drying. Additionally, significant cost savings could be realized by minimizing odor controls and other costly options for containment of biosolids. Published by WERF. 244 pages. Soft cover and online PDF. (2008)

As of February 2020, the web tool is no longer available.

Originally funded as WERF project 03-CTS-9T.