The Central States Water Environment Association’s recent Annual Meeting featured two Donohue projects.

Katherine Merkle, PE, presented Evaluation of Alternatives for Town’s Peak Wet Weather Flow Treatment and Permitting Process with John Dyson from Aqua-Aerobic Systems, Inc. This presentation focused on the evaluation of alternatives, testing, and permitting process for Elkhart, Indiana’s wastewater treatment plant as they seek to expand wet weather treatment capacity with limited available space.

Eric Lynne, PE, and Chris Lefebvre from the City of Stevens Point presented Biosolids Drying to Eliminate Liquid Land Application. This case study shared how biosolids management can be transformed from the unpredictable to the routine. The City recently converted from a liquid (cake) process to dried product handling. Sustainable features include using biogas to run the heat dryer.

Katherine is a water and wastewater engineer in Donohue’s Indianapolis office. She has 17 years of experience in the planning, design, and construction of water, wastewater, combined sewer overflow, sanitary sewer, lift station, storm water, and flood control projects. She has a B.S. in civil engineering from Purdue University and is a registered professional engineer in Indiana.

Eric has been working with the City of Stevens Point for over a decade to plan and implement critical digestion, dewatering, and drying upgrades. He is currently Donohue’s Minnesota Area Manager and earned undergraduate and graduate engineering degrees in civil and environmental engineering from South Dakota State University.