World’s largest ultrafiltration system ordered for Lakeview Plant near Toronto

CH2M Hill of Toronto are designing a major expansion to the Lakeview Water Treatment plant to treat Lake Ontario water for the Region of Peel west of Toronto.
The plant, which serves one million people, will have the largest immersed, hollow fibre membrane ultafiltration unit for drinking water in the world. The membrane installation will have a summer capacity of over 300 ML/d.
Lake Ontario’s source water is moderately hard and generally low in turbidity and organics except for periods in the late summer that can last several weeks when it has an odour and taste. The new capacity expansion will use ozone and biologically active carbon to pretreat the lake water before it passes through the ultrafiltration process.
The membrane is manufactured by Zenon Environmental of Oakville. Comprehensive pilot tests were done in 2003 to compare different filtration products. The assessment took into account capital and 20-year operating costs.
The $12-million plant expansion should be commissioned in 2006.