Drinking Water Treatment Municipality of Latulipe-et-Gaboury, Quebec

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Courtesy of H2O Innovation

Latulipe-et-Gaboury is a small municipality of about 330 inhabitants in the Abitibi-Témiscamingue region. Its drinking water requirements are 270 m3/day. The town's water source is a lake (Lac de l'Aqueduc) which appears to be fed directly by a spring. Since there is no discharge of water aside from seepage and evaporation, algae tends to form in the lake during the summer months.

As shown by the findings outlined in table 1, the water is only slightly colored, but rich in organic matter and microorganisms. H2O Innovation conducted a nanofiltration pilot study of the water in summer 2001.

A unit featuring a nanofiltration composite membrane was used to carry out this pilot project. Lake water collected in the feed tank was run through a multimedia prefilter to trap as many particles suspended in the water as possible. From there, the water was screened through a 5 micron sediment prefilter, then pressurized through the spiral membrane using a multi-stage pump. Another 2 HP pump provided the required recirculation. The permeate and concentrate were returned to the lake.

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