Todd DeJournett is a Principal Engineer based in Minnesota with more than 20 years of experience focused on industrial water/wastewater treatment, drinking-water treatment, aquatic chemistry, and remedial system design.
He helps clients in the mining, agriculture, power, fuels, manufacturing, and municipal sectors to make sound decisions with respect to the treatment, use, reuse, and discharge of water. Clients benefit from Todd's experience across multiple industries and his ability to adapt water treatment and management approaches to match his clients' business models. Todd helps his clients understand how trends in water supply, water use, and water quality regulations impact their businesses.
As a process design lead, Todd has addressed wastewater treatment at a new copper-nickel mine in Minnesota, created a regeneration system for perchloric acid etch solution at an electronic-device manufacturer, constructed an advanced oxidation system to remove 1,4-dioxane from drinking water, and built both onsite and offsite (point-of-entry) treatment systems to remove sulfolane from refinery-impacted groundwater. In addition, Todd served as a core technical team member for wastewater process engineering in the beet sugar and cane sugar industries, developed water treatment and management options to dewater a legacy ash pond in accordance with the CCR rule, and administered wastewater process engineering to address mercury, arsenic, molybdenum, and intermittent toxicity in refinery wastewater.
Todd has advanced the state of the practice through his use of integrated modeling tools, including GoldSim and PHREEQC, to support industrial water management decisions. Using these integrated modeling tools, he dynamically evaluates process decisions, impacts of water reuse on long-term process-water quality, and capital and operational costs associated with treatment. In addition, he adapted a variety of statistical tools to help clients mine additional value from their process and instrumentation data. His use of focused bench- and small-scale pilot testing also helps his clients understand how their water responds to various treatment methods, which supports better early water-management decisions.
Todd serves as a member of the Interstate Technical Regulatory Council (ITRC) team on per- and poly-fluorinated alkyl substances (PFAS), where he is a contributing author to ITRC's PFAS Remediation Technology Fact Sheet.