Canadian Mining Journal

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WATER TREATMENT: Veolia to supply plant for Brucejack gold mine



MONTREAL – Veolia Water Technologies Canada has been chosen by Pretium Resources to supply the effluent treatment facility for the Brucejack gold mine about 65 km north of Stewart, BC.

Veolia will supply proven proprietary processes to treat up to 10,000 m3/d of effluent water from the mine. The permanent effluent treatment system will consist of several technologies which were selected for their robustness and compactness, starting with the Actiflo® clarification process for primary metals removal. The water will be further polished by a highly-efficient HydrotechTM disc filter, which gives added insurance in meeting very stringent discharge criteria. Start-up of the new effluent treatment facility is scheduled for spring 2017.

This contract follows months of extensive collaboration and testing to ensure that the most stringent environmental discharge limits will be met. The exhaustive test work that was carried out at Veolia laboratories in Montreal has been largely used in support of the extensive permitting work that has been prepared by Pretium for the Canadian and provincial authorities.

Veolia started working with Pretium in spring 2014 when the company needed to dewater Brucejack’s underground workings during its exploration phase. Veolia then supplied a mobile Actiflo water treatment plant, which it has operated since. This temporary facility has provided Pretium large amounts of extremely valuable seasonal operational data for future reference. As the Actiflo clarification process will also be installed in the new effluent treatment facility, it gives Pretium the confidence that the system meets the stringent requirements of low level metals and total suspended solids while dealing with variable feed water.

Pretium, headquartered in Vancouver, is constructing the Brucejack high grade underground gold mine. Commercial production is targeted for 2017.

Veolia Group designs and provides water, waste and energy management solutions that contribute to the sustainable development of communities and industries. Please visit www.Veolia.com.