TnT Engineering

Creativity in Wastewater Engineering


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Canton WRF MBR Train 1B Looking West

More than 30 Years of Experience

TnT Engineering, LLC, (TnT) was founded in June 2013, by principal, Mr. Terry M. Gellner, P.E., a respected and sought after professional in the water and wastewater treatment and facility industry. His thirty-five plus years of experience and project knowledge provides the basis of TnT Engineering’s knowledge and experience. He has experience working as project manager and senior design engineer for various projects for government and private companies.

Below are a few of the awards and recognitions he has received during his career.



Ohio Water Environment Association State Awards

  • Inducted into the Membership of the 5S (Select Society of Sanitary Sludge Shovelers) since 2003

Engineering Awards Ohio Water Environment Association:

  • Engineering Excellence Award 2005 – Project was the Canton Water Reclamation Facility project constructed in the late 1990’s
  • Engineering Excellence Award 2010 – Project was the City of Delphos WWTP which included Membrane technology and ATAD Class A sludge stabilization
  • 2015 Lifetime Engineering Award

Ohio Water Environment Association – Northeast Section Awards:

  • Keith Riley Outstanding Supporter Award – 2011
  • Past President Award – 2002
  • President’s Commendation Award – 2001

Water Environment Federation:

  • Chairperson for POMC Committee
  • Chairperson, Workshop for Membrane BioReactor Activated Sludge Treatment; 2006, 2007 and 2008
  • Member of the Community of Practice for the Membrane Technology
  • Member of Steering Committee for Membrane Technology Specialty Conference in Atlanta GA – 2008

Our Mission is:

Dedication to the wastewater and water industry to provide practical, cost effective, feasible and sustainable infrastructure improvements; and to protect and enrich our communities, environment and natural resource through engineering stewardship.

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