Friday, January 16, 2015

ScienceDaily: Energy and Resources News

ScienceDaily: Energy and Resources News


New technology purifies waste water by freezing it first: Possible applications in mineral extraction industry

Posted: 12 Jan 2015 06:31 AM PST

Freezing technology can be utilized in waste water treatment, researchers in Finland have shown. When waste water freezes, it can be purified through the formation of a cleaner layer of ice. The clean layer of ice can be removed from the rest of the waste water, and the remaining waste water is more concentrated. The new energy-efficient method of purification is based on the natural freezing process of water: energy is required only for breaking the ice and transporting it from the waste water pool.

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