Todd DeJournett, Ph.D., P.E.

Todd DeJournett is a Senior Engineer based in Minnesota with more than 15 years of professional experience focused in the areas of industrial water/wastewater treatment, drinking water treatment, aquatic chemistry, and remedial system design.

His professional experience includes helping 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. Todd's clients benefit from his experience across multiple industries, and his ability to adapt different 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.

Serving as the process design lead, Todd's experience includes:  wastewater treatment at a new copper-nickel mine in Minnesota, a perchloric acid etch solution regeneration system at an electronic device manufacturer, an advanced oxidation system for removal of 1,4-dioxane from drinking water, and both onsite and offsite (point-of-entry) treatment systems to remove sulfolane from refinery-impacted groundwater. Todd has also served as a core technical team member for: wastewater process engineering in the beet sugar and cane sugar industries, development of water treatment and management options to dewater a legacy ash pond in accordance with the CCR rule, and 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 decisions with respect to industrial water management. These integrated modeling tools allow a dynamic evaluation of process decisions or water reuse on long-term process water quality, as well as the capital and operational costs associated with treatment. He has also adapted a variety of statistical tools to help clients mine additional value from their process and instrumentation data. Todd's use of focused bench- and small-scale pilot testing also helps his clients understand how their water responds to various treatment methods, facilitating 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.

Contact Todd DeJournett at This email address is being protected from spambots. You need JavaScript enabled to view it. or +1-612-253-8210.

Career Summary: Todd DeJournett, Ph.D., P.E.

  • Specialties: Dynamic Industrial Water and Mass Balance Modeling; Reverse Osmosis Membrane Concentrate Treatment, Management, and Reuse Water Reuse and Waste Minimization Process Design; Treatment of Emerging Contaminants in Drinking Water, Point-of-Entry Treatment System Design; Whole Effluent Toxicity Reduction
  • Practice Areas: Water Management
  • Disciplines: Civil Engineering, Environmental Engineering
  • Education: Ph.D., Environmental Engineering, University of Minnesota, 2006; M.S., Environmental Engineering, University of Iowa, 1998; B.S., Civil Engineering, Missouri University of Science and Technology, 1997
  • Registration: Minnesota Professional Engineer, P.E.47085; Licensed to practice in 4 other states
Geosyntec Consultants
Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure.

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