Anaerobic Digester Foaming Web Seminar

Causes, Effects, Prevention, and Control of Anaerobic Digester Foaming

(NEW YORK, NY – June 15, 2012) – On June 20 from 2:00 – 4:00 pm EDT, WERF presents a web seminar on the Causes, Effects, Prevention, and Control of Anaerobic Digester Foaming.

Anaerobic digestion has been used in wastewater treatment plants (WWTPs) globally for decades to stabilize sludge and/or to release energy from waste sludge. However, as efficient as this process has become over the years, the problem of anaerobic digester (AD) foaming has plagued the industry for decades. It is cited as a common problem in WWTPs, both recently and in the past, with many reported causes as well as a number of anecdotal prevention and control methods.

Much of the information available is based on single-plant, specific cause-effects control investigations. AD foaming problems continue to persist and are documented by an increasing number of WWTPs that have implemented upstream processes such as biological nutrient removal and membrane bioreactors in an effort to meet more stringent effluent permit requirements. This web seminar will provide findings from an ongoing targeted collaborative research study that’s currently underway to better understand the causes and impacts of AD foaming, identify and fill gaps in literature, and to identify successful methods for AD foam prevention and control.

Among the presenters will be Dr. Paul Pitt, P.E., Director of the Hazen and Sawyer’s Wastewater Process Technology Group. Dr. Pitt has more than 30 years of experience in wastewater treatment. Previous to his work with Hazen and Sawyer, Dr. Pitt worked for the City and County of San Francisco SFPUC, where he was involved in all aspects of wastewater treatment plant operation and design. He started his work on foaming in activated sludge with Professor David Jenkins at UC Berkeley in the 1980s. Dr. Pitt is a leading expert in the field of wastewater treatment plant design and operation, with emphasis on BNR/ENR upgrades, process modeling, operational troubleshooting, and solutions to activated sludge filamentous bulking and foaming problems.

This seminar is free to WERF subscribers and eligible for professional development hours. Visit the WERF website to sign up.

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