top of page

Carbon Activated Power Feed System

Champlain Water District, Burlington, VT

Lampricide treatment using TFM (3-trifluoromethyl-4-nitrophenol) on the LaPlatte River prompted the need to ensure Champlain Water District (CWD) customers were protected from concentrations above 3 parts per million.

Powdered activated carbon was selected as the best alternative for ensuring removal of this synthetic organic contaminant should it show up in the raw water feed to the CWD Water Treatment Facility. After evaluation of three potential PAC system suppliers, the Norit-Cabot system was selected due to their experience in Vermont and their ability to supply a PAC feed system on a fast-track basis.

Dufresne Group completed the Preliminary Engineering Report, Final Design, and also provided assistance during piloting and start up phases. Dufresne Group has designed PAC feed systems for several other water treatment facilities including

Burlington, Barre, Montpelier, and Lebanon, NH.

Fast Track Project Schedule

  • Contract dated August 26, 2016

  • Draft PER sent on August 31 , 2016

  • Pilot Activities completed on Sept 1, 2016

  • Final PER sent on September 7, 2016

  • Operational Oct 2016

Key Features

  • TFM time of year application program required an accelerated schedule for the PER and Final Design

  • PAC slurry education system allows PAC feed without pumps

  • Process monitoring of PAC by CWD water quality staff showed substantial reduction in THMFP, HAAFP, and TOC

  • CWD opted to purchase the PAC feed system to allow operation for possible use with cyanobacteria or other unregulated contaminants

great quote goes here

Joseph Duncan, Director of Projects & Programs/Chief Engineer
403 Queen City Park Road
South Burlington, Vermont 05403
Phone: (802) 864-7454

bottom of page