Citation:

Pagilla, K. AND B. Subramanian. Guidance Document on Anaerobic Digester Foaming Prevention and Control Methods (WERF Report INFR1SG10a). Water Environment Research Foundation, Alexandria, VA, 2014.

Impact/Purpose:

This report: •Provides step-by-step guidance on management and mitigation based on type of foam episodes (occasional, seasonal and persistent); •Provides general guidance on AD foam incident management and includes information on the various causes-impact-control options available; •Illustrates the benefits and concerns associated with several monitoring, mitigation, and control alternatives; •Provides “how to” information on each step of foam management – problem identification, monitoring and detection, and prevention/control of foam episodes.

Description:

The development of this anaerobic digester (AD) foaming guidance document is based on the need for a specific detailed methodology that water resource recovery facilities (WRRF) personnel can follow and implement to manage or mitigate AD foam incidents. This guidance manual is the final product following a comprehensive research effort on AD foaming in full-scale WRRFs. It is the outcome of lessons learned from extensive literature review, WRRF surveys, full-scale data studies and experimental analyses. The primary goals of this document are to: 1) serve as a practical and usable tool for WRRFs, 2) present feasible alternatives that are cost-effective, 3) present large amounts of practical, focused information in a concise manner, and 4) present information of sound technical and scientific basis that can become a standard or foundation for foam management in WRRFs. [NOTE: The link below connects to a WERF site where the Final Report can be downloaded for free, after registering at the WERF site. For some projects the Executive Summary is available and can be downloaded for free without registering on the WERF site.]

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