West Fraser spends C$600,000/year on hydrogen peroxide treatment approach to reduce odors at its pulp mill in Hinton, Alberta, is evaluating cost of using chlorine dioxide instead

LOS ANGELES , February 20, 2014 () – West Fraser Timber Co. spends C$600,000/year on a new hydrogen peroxide system to reduce odors at its pulp mill in Hinton, Alberta, and it is evaluating the cost of turning to chlorine dioxide instead, the Hinton Parklander reported on Feb. 18.

The company installed the new system to treat its wastewater plant last April. The peroxide works to oxidize the total reduced sulfur chemicals in the mill’s liquid effluent, thus reducing the amount emitted into the air.

Jennifer Fowler, the mill’s technical and environmental superintendent, said there have been fewer complaints from residents about the mill’s odor since the new system was installed.

West Fraser is currently assessing whether chlorine dioxide could help oxidize even more of the sulfide, thus further reducing the odor.

The company is required to inform the province when air quality measurements exceed certain odor-related guidelines.

In its approach to the odor problem, West Fraser learned that its effluent treatment ponds were the worst offenders.

To address the issue, West Fraser worked with consultant Stantec Inc. and with research center FPInnovations.

The Hinton mill produces northern bleached softwood kraft (NBSK) pulp, with a capacity of 370,000 tonnes/year, according to the company website.

The primary source of this article is the Hinton Parklander, Hinton, Alberta, on Feb. 18, 2014.

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