Air Emissions

The following are examples of air emissions initiatives implemented at specific mills in the last several years:

  • Our Catawba, South Carolina site is 1 of only 4 U.S. kraft facilities to voluntarily reduce adsorbable organic halide (AOX) emissions to less than half the minimum EPA requirements for standard facilities. The Catawba site also:

    • Produces less than half the particulate emissions allowed by operating permits, thanks in part to a recent upgrade of the mill’s electrostatic precipitators.

    • Converted an existing recovery boiler to a low-odor unit, cutting total reduced sulfur emissions from allowable 20 PPM to less than 5 PPM.

  • In 2001, our Thunder Bay, Ontario operation installed a new low-odor recovery boiler.

    • The boiler has helped reduce odor-causing compound and particulate emissions by more than 50% from just 5 years ago.

    • During the past decade, the Thunder Bay facility has reduced odor-causing compounds and particulate emissions by 90%.

  • In 2004, Thunder Bay installed the first dilute non-condensible gas collection system in Ontario to collect and incinerate a variety of small sources of odorous compounds, such as tank vents.

  • Also at Thunder Bay, we are developing a dynamic air emissions tracking model. The model updates every 5 minutes, using current weather data, to allow operators to quickly adjust processes to minimize impact of emissions.

  • The Gatineau, Quebec mill has reduced greenhouse gas emissions by approximately 83% since 1990.

  • Since 2002, we have installed low nitrogen oxide (NOx) burners in Usk, Washington; Calhoun, Tennessee; and Coosa Pines, Alabama to substantially reduce NOx emissions.

  • Our Dalhousie, New Brunswick mill has reduced particulates and sulfur dioxide (SO2) emissions by modifying its boiler to handle more bark as fuel.

  • In 2003, our facility in Mokpo, South Korea started a flue gas de-sulfurization system on its power boiler that reduced the SO2 emissions by 80%.