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  • Nutrient Management in Energy Neutral WWTPs: Lessons Learned and the Path Ahead

Nutrient Management in Energy Neutral WWTPs: Lessons Learned and the Path Ahead

  • 15 Nov 2012
  • 11:30 AM - 1:30 PM
  • One Parkway Building, 1515 Arch Street, 18th Floor Conference Room, Philadelphia, PA
  • 84


(depends on selected options)

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Nutrient Management in Energy Neutral WWTPs: Lessons Learned and the Path Ahead

Dr. Dimitri Katehis Ph.D., PE

Director of Process Engineering

Greeley and Hansen

Achieving high level of nutrient removal has been traditionally associated with higher liquid side energy consumption in wastewater treatment plants. However through a combination of dewatering sidestream nutrient management technologies, main stream flow nitritation, enhanced volatile solids degradation and high value biogas utilization, the energy balance of WWTPs can be enhanced to the point of achieving energy neutrality along with high level of nutrient removal. The ability to rapidly assess the impact of such process changes using combined of energy and mass balance tools will be demonstrated.

Dr. Dimitri Katehis,  Greeley and Hansen’s Director of Process Engineering,  has two decades experience in nutrient removal and recovery.  Initially focused on sidestream nutrient recovery and high rate main stream nitrogen removal processes in the early 1990’s, he led the development of sidestream bioaugmentation and nitritation processes in NYC and DCWater utilizing the fundamentals developed from his doctoral work.  For the past 13 years he has been focused on implementation of innovative nutrient control solutions ranging from deammonification reactors in Philadelphia, New York and Tuscon, to integrated MBR/BioActiflo process trains in the Chesapeake Bay Watershed.  His work has been presented in national and international conferences and he is the author of book chapters in the WEF/ASCE MOP-8 among other publications.

He holds a Bachelors of Engineering (magna cum laude) and a Master of Engineering in Civil Engineering from the City College of New York, and a Doctorate in Philosophy from the City University of New York.   

Engineers:  This seminar does qualify for 1.0 Professional Development Hour (PDH).  A Certificate of Attendance will be available on site for AWRA-PMAS members only.  The meeting price for non-members who wish to receive a 2012 Certificate of Attendance for the PDH is $10.00 ($3.00 for meeting + $7.00 for certificate).  Please note: all registrations for lunch orders close by noon on the day before the presentation.  Thank you!

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