Donohue & Associates is working with the Holland Board of Public Works (HBPW) to construct an anaerobic digester at the Holland Area Water Reclamation Facility. HBPW is reaching capacity with its existing solids storage tanks while landfill fees were increasing and the quantity of solids accepted by the local landfill was decreasing. Donohue designed an anaerobic digester to resolve this issue. It provides a sustainable solution that will be of benefit to the Holland area. The project recently received an ENVISION Gold rating for sustainability.

Donohue & Associates and Richmond Sanitary District received a 2023 ACEC Indiana Engineering Excellence Honor Award for the Phase 1 Improvements project at the William E. Ross Wastewater Treatment Plant. Upgrades to the Richmond Sanitary District’s secondary treatment system restored peak plant capacity while reducing plant energy usage by 34% and nearly eliminating chemical use for phosphorus removal. Creative construction sequencing and new structure design allowed plant capacity and the desired level of treatment to be maintained during construction.

To mark its 25th Anniversary, Donohue created a comprehensive corporate video to showcase its many client and employee offerings.

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Donohue & Associates and the City of Stevens Point, Wisconsin received a 2023 ACEC Wisconsin Engineering Excellence Best of State Award for the Liquid to Dried Biosolids Conversion Project at their wastewater treatment facility. Donohue and the City collaborated to bring multiple departments within the City together to create a solution for cost effective wastewater treatment, utility vehicle storage, interdepartmental networking, all with a renewable focus on using existing resources (biogas, effluent water, solar) at their disposal. As a Best of State winner, the project is now eligible for the state’s top honor (Grand Award), to be announced in April 2023.

Donohue & Associates and Western Lake Superior Sanitary District received a 2023 ACEC Minnesota Engineering Excellence Honor Award for the Oxygen Supply Improvements Project (OSIP) at the District’s water resource recovery facility. The District collaborated with Donohue to update its oxygen production system, resulting in an efficient, reliable, and sustainable solution. The new 80-ton-per-day vacuum pressure swing adsorption (VPSA) system consumes about 33% less energy than the previous system. The District’s commitment to enhancing energy efficiency has allowed them to save $1 million annually on purchased energy compared to 2013, and this project is the largest contributor towards those savings.