Detoxification of
newsprint mill effluent with a high-yield bisulphite
process that uses activated sludge and ozonation
treatment
Conducted by:
Gaspésia Pulp & Paper Co. Ltd.
n order to bring its operations in line with new pulp
and paper regulations, the Gaspesia Company needed to
install an activated sludge treatment unit at its
newsprint mill in Chandler, Quebec. The project consisted
of choosing the most efficient type of reactor
(complete-mix, plug-flow or hybrid reactor). New
technologies were tested to evaluate their ability to
enhance the performance of the activated sludge treatment
system. These approaches included the use of ozone for
reducing or eliminating toxicity, sulphite oxidation as a
pre-treatment, and monitoring and control procedures to
improve management of the biological system. This work,
carried out in collaboration with the Pulp and Paper
Research Institute of Canada (PAPRICAN), included an
assessment of the technical and economic feasibility of
using ozonation in the activated sludge treatment process
for effluents at the Chandler mill and at other mills
that employ this process.
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Time frame: 14 months
End of project: September 1994
Total cost: $208,220
EC contribution: $104,110
Status: Completed
Project manager: Pierre Sylvestre
Documents: Final report, Summary report, Technology
data sheet
Tel.: (514) 496-2657
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îles de la Paix
National Wildlife Area feasibility study and plans and
specifications for protection against shoreline erosion
Conducted by: Public Works and Government Services
Canada
A feasibility study was conducted and plans and
specifications were prepared to halt shoreline erosion
within the Îles de la Paix National Wildlife Area and to
provide long-term protection in keeping with the
reserve's wildlife vocation. The proposed measures
included re-profiling the shoreline and installing riprap
to prevent shoreline erosion on the north side along with
a protective barrier in the sector where the barrier
beach has disappeared. Some 4850 m of shoreline will be
protected accordingly.
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Time frame: 6 months
End of project: October 1994
Total cost: $36,800
EC contribution: $36,800
Status: Completed
Project managers: Lucie Olivier/René Rochon
Documents: Feasibility study, Plans and
specifications
Tel.: (514) 283-0676
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