Lagoon Microbiology: Meet Your Bugs

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In this hour-long webinar, lagoon specialist Julie Hartwig provides a close-up examination of the workhorses of biological wastewater treatment and explains how to use wet testing for diagnosis and process control.

0:00 Introduction
5:00 Importance of biological treatment
7:30 Biological metabolism
10:10 Respiration vs Fermentation
13:15 Environmental Factors: aerobes vs anaerobes; facultative vs obligate; temperature; pH
18:20 Nutrient Requirements: macronutrients, micronutrients
21:05 Heterotrophs vs Autotrophs
23:15 Growth Kinetics and Biological Treatment Efficiency
26:00 Meet the Bugs
26:25 BOD Eating Bacteria—Heterotrophs: Free floating, floc forming, filamentous
29:30 Sludge-digesting Microbes
33:00 Algae
34:45 Nitrification
39:20 Denitrification
42:00 Higher Life Forms
43:00 Diagnosis with Bacteria
46:15 Wet Testing
49:55 Bioaugmentation
52:00 Questions and Answers

Preapproved for 1 continuing education hour in Alaska, Arizona, California, Idaho, Illinois, Indiana, Iowa, Louisiana, Maine, Montana, New Hampshire, New Mexico, Ohio, Oregon, South Dakota, Vermont, Washington, and Wyoming. Likely accepted in states that do not preapprove CEUs, such as Alabama and South Carolina. Eligible for PDH credit in all states.

About the instructor

Julie Hartwig is a lagoon specialist for Triplepoint Environmental. She has a BS in Civil Engineering from the University of Illinois at Urbana-Champaign, a Master’s in Environmental Engineering from Penn State University, and extensive practical experience working with municipal and industrial wastewater treatment facilities. Julie has presented on lagoon topics at a number of regional conferences.