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    Kemess Selen-IX plant restart: selenium treatment lessons for mine water engineers

    September 25, 2026|

    Reviewed by Tom Sullivan

    First reported on International Mining – News

    30 Second Briefing

    BQE Water has restarted the selenium removal plant at Centerra Gold’s Kemess project in British Columbia, using its patented Selen-IX™ ion exchange process to treat mine-impacted water. The Kemess installation was the first full-scale Selen-IX™ plant, designed to remove dissolved selenium to low µg/L levels without generating large volumes of sludge typical of lime co-precipitation systems. The restart confirms long-term operability of the modular Selen-IX™ circuit, relevant for sites facing tightening selenium discharge limits in mountainous, high-runoff catchments.

    Technical Brief

    • For similar high-runoff mining catchments, long-term restartability of modular treatment circuits is a key lifecycle design consideration.

    Our Take

    For Centerra Gold Inc, having a dedicated Kemess Selen-IX plant in British Columbia strengthens its environmental track record at a time when several other Environmental-category items show Canadian projects facing tighter discharge limits, which can materially influence permitting timelines and eventual closure liabilities.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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