Search Results for "clean"

The Ice Wall Cometh

A FROZEN-GROUND BARRIER may sound more like a sci-fi set piece than a modern remediation technology. Unlike a wall above ground, ice walls — or ice dykes, curtains, ring-fences and cofferdams — exist below ground and are a separate entity from the surrounding soil and groundwater. Ground freezing is widely […]

Huffing & Puffing

YOU’VE HEARD the ads. Beyond the ugly open pit mines lies a different sort of oil sands, intones a friendly Cenovus voice. The difference, goes the ad, consists of some 100 gleaming steam plants in Alberta’s boreal forest where industry can safely recover oil from 450 metres beneath the ground […]

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Wastewater Heat Recovery On the Rise

Waste-to-energy is an idea about to hit the big-time. What used to be a suite of technologies mostly employed by the poor in developing countries is now being eagerly revamped for distribution across North America by waste-to-energy start-ups hoping to capitalize on the fantastic quantities of waste we produce. We […]