The course covers the problems associated with excess biosolids build-up in lagoons and its effect on lagoon operation and permit compliance. It gives detailed instructions on how to test the sludge blanket in a lagoon, and an overview of the strategies available to remove or remediate problematic biosolids.
0:00 Introduction
3:15 What is Ammonia?
3:50 Nitrification
4:35 Nitrification Options
5:35 Autotrophs vs Heterotrophs
6:05 Lagoon Nitrification Requirements
10:10 Problems with Lagoon Biosolids
16:00 Benthal Feedback Problems
17:55 Benthal Feedback pH & Conditions
20:05 Benthal Feedback Testing
21:30 Reduction in Retention Time
23:00 Low Dissolved Oxygen
25:00 When Should You Remove Sludge?
28:30 Sludge Accumulation Rates
30:00 Why Should You Measure Sludge
33:30 Sludge Measurement Options
41:00 Keys to Proper Sludge Management
43:25 Sludge Removal Options
47:50 Sludge Removal Alternatives
54:20 Conclusions
55:40 Questions and Answers
Preapproved for 1 continuing education hour in Alaska, Arizona, California, Idaho, Illinois, Indiana, Louisiana, Maine, Montana, New Hampshire, New Mexico, Ohio, 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
Patrick Hill is a lagoon specialist for Triplepoint Environmental, a company dedicated to providing cutting edge and cost-effective solutions for wastewater lagoons across North America. After graduating from the University of Notre Dame, Patrick began his career working for the reputable civil engineering firm, Sheaffer & Roland, Inc., which focuses on the design, build and operation of wastewater treatment lagoon systems. He joined Triplepoint, based in Centennial, Colorado, in 2007, and has since worked with hundreds of lagoon owners to help extend the life of lagoon systems, improve efficiency, expand capacity and meet new effluent requirements. Patrick has presented on lagoon topics at dozens of conferences across the country and at the Water Environment Federation’s annual conference (WEFTEC).
