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all things water®

Contact Us

498 Seventh Ave, 11th Floor
New York, NY 10018

(212) 539-7000

Phill Yi, PE

Senior Associate

Phill has extensive experience with managing, planning, designing, and analyzing wastewater treatment and reclamation facilities. His expertise includes biological nutrient removal, membrane bioreactor (MBR) systems, sampling protocol and analysis, disinfection, solids handling, and construction administration. Phill has performed critical tasks for major clients including Fairfax County and Loudoun Water. He served as Project Manager for the design of Loudoun Water’s $76 million expansion of Broad Run Water Reclamation Facility in Loudoun County, Virginia. He joined Hazen in 2010.

Areas of Expertise
• Master planning
• Wastewater treatment planning and design
• Wastewater process controls and instrumentation
• Wastewater treatment capacity analysis
• Membrane bioreactor (MBR) systems
• Biological nutrient removal processes for wastewater treatment
• BioWin process modeling
• GPS-X process modeling
Professional Activities
Water Environment Federation (WEF)
MS, Environmental Engineering, Virginia Polytechnic Institute & State University, 2010
BS, Civil Engineering, Virginia Military Institute, 2008
Professional Engineer