Recirculation of flow from within a wastewater treatment system has been utilized as a tool for decades. This one-hour class will look at the benefits of recirculating water from the back of your lagoon system to the front; including how and why it can improve BOD removal, reduce algae, lower nitrate levels, increase alkalinity and improve nitrification. We will then investigate the theoretical design from a biological process point of view; how much to recirculate, the benefits/cost of creating a pre-anoxic zone, adding mixing, covers, cycling air, and blending influent flow with recirculated flow prior to returning it to the lagoon. Finally, we will look at how to implement recirculation and present case studies.
Preapproved for 1 continuing education hour in Alaska, Colorado, Illinois, Indiana, Louisiana, Maine, Michigan, Montana, Ohio, Washington, and Wyoming with the successful completion of the quiz and verified attendance. Likely accepted in states that do not preapprove CEUs, such as Alabama and South Carolina. Eligible for PDH credit in all states.
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 Federationu2019s annual conference (WEFTEC).
