Membranes are Becoming the Treatment Method of Choice for Large Scale Drinking Water Plants

Over the past 30 years, few municipalities in Canada have experienced the kind of rapid population and economic growth that the Region of Peel has. With the population increasing from about 330,000 to over one million residents, the municipality places a high priority on ensuring that new infrastructure expenditures are long-term investments.

The Region of Peel began discussions in 2002 to expand its Lakeview Water Treatment Plant (LWTP). Both Regional Council and senior management established key criteria for current and future expansions at the site. It was imperative that the expansion remain within the existing footprint of the plant, produce the highest quality drinking water possible at a reasonable cost, and allow for sufficient capacity to service future needs and opportunities.

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The Town of Collingwood, Ontario, is a popular resort community located on the shores of Georgian Bay, with a seasonal population of over 16,000 people. Potable water treatment was traditionally achieved through screening and chlorination. The Town's potable water supply has historically been good with no pathogen occurrences until 1996 when suspected cases of Cryptoporidiosis were identified in some of the residents.

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The Olivenhain Municipal Water District’s (OMWD) new treatment facility represents one of the largest ultrafiltration plants in the world. The plant was designed for an initial flow of 25 MGD, and has since been expanded to 34 MGD in February 2004. The facility also includes a three train second stage membrane system that treats the reject flow from the first stage, resulting in up to 99% recovery.

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