The City of Portsmouth in southeastern New Hampshire upgraded its 11 MGD Peirce Island WWTF with a Veolia nitrification and denitrification BIOSTYR® system to remove BOD and Total Nitrogen. By incorporating the BIOSTYR system, the plant was able to upgrade within its very limited footprint and meet strict EPA mandates for TN discharge into the Piscataqua River, while maintaining the aesthetics of the economically and environmentally sensitive surroundings. In this presentation, the City of Portsmouth will share their experiences in technology selection (piloting efforts), construction, startup, and current performance of the plant and BIOSTYR system.
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Terry Desmarais, P.E. is the City Engineer and Engineering Supervisor for the City of Portsmouth. Mr. Desmarais is in charge of the engineering division within the department of public works that generally manages development and implementation of the City’s capital improvements program, oversight of engineering design and construction projects, coordination of new and redevelopment projects, and asset management. In addition Mr. Desmarais oversees the operations staff for the utilities group (water/sewer/stormwater) and wastewater treatment and pumping station groups. Mr. Desmarais was the lead team member for the recently completed $92M Peirce Island Wastewater Treatment Facility. His efforts with the treatment facility planning and design began prior to his employment with the City as an engineering consultant and included working on the piloting program to select the secondary treatment technology. Mr. Desmarais received his Bachelors of Science Degree in Civil Engineering from Worcester Polytechnic Institute and has 22 years of experience in civil and environmental engineering in the New England area.
Larry Li is product manager with Veolia Water Technologies. He has about 20 years of experience in water and wastewater treatment related research, modeling, design and product development. He is specialized in fixed film technologies such as IFAS/MBBR, ANITA Mox and BIOSTYR BAF.
