Stora Enso


Product:         Geotube® Dewatering Technology

Application:   Pulp & Paper

Location:       Niagara, Wisconsin


The Challenge:

Each year during a scheduled plant shutdown, two million gallons of alum sludge from an on-site water treatment plant must be removed and dewatered -- with the entire operation being completed within a few days.

The Solution:

A single GT500 Geotube® container (60' circumference x 200' long) dewatered the entire two million gallons of sludge within the timeframe of the plant shutdown [photos 1-2].  Not only that, the Geotube® installation was fast and easy for the plant's maintenance personnel.

The Results:

The Geotube® dewatering operation removed 99% of the Total Suspended Solids (TSS) with effluent BOD of less than 7 mg/l.  This allowed the resulting effluent to be discharged directly without any additional treatment by the mill [photos 3-4].

This dewatering process proved to be extremely successful.  It has since been adopted as the mill's standard method for its annual cleanout.