Building a water treatment plant for remote communities in cold environments

Description:Building a water treatment plant for remote communities in cold environments. Presenter: Cheryl Gomes, M. Eng., BI Pure Water. Building a water treatment plant for a remote community with extreme weather conditions comes with a unique set of challenges. Kugaaruk, Nunavut is the location of the coldest wind chill ever recorded in Canada (-92°C, 1975). BI Pure Water and Williams Engineering delivered a package plant to Kugaaruk for the Government of Nunavut in 2013. The source water is a manmade reservoir along a river, 2km northeast of the Arctic Ocean. The river surface is frozen most of the year, and when it does thaw, there are very high levels of sediments and dissolved minerals. Functionality in subzero temperatures, reliability and mobility were key objectives. Positioning the intake involved a careful balance between avoiding the river surface (which freezes) and avoiding near-bottom layers (which may consist of dense sea water during high-tide surges into the river). The plant includes two independent parallel treatment trains (dual intake/cartridge filtration/UV/chlorine) for redundancy, and a truckfill system used for water delivery to each home’s storage tank in the 750-person community of Kugaaruk. Traditional pipe distribution systems cannot be installed due to extensive permafrost and frost heaving. The plant enclosure is insulated with 4” polyurethane panels and steel-lined for bullet proofing to accommodate hunting lifestyles. The plant was manufactured at BI Pure Water in Surrey and shipped via Canadian Coast Guard ice breakers, during their annual delivery to Kugaaruk. This presentation will outline numerous ongoing challenges associated with this project, and how all parties collaborated to proactively evaluate and overcome each one.

Authors: Cheryl Gomes

Subjects:

Tags:2015 BCWWA Annual Conference & Trade Show,AC15,AC15 presentations

Citation:stream 6: Building Resilience

Publication Date:May 28th, 2015 Upload Date:Jun 25th, 2015

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