Research project

Wastewater treatment by natural freeze crystallization and ice separation (WINICE)

Project Details

Start date: 01/01/2015

End date: 31/12/2017


Academy of Finland


The arctic region is a potential area of exploration for natural resources. To be sustainable, this exploration should be carried out with minimal disruption to the arctic environment. As such, the proper handling and treatment of wastewater is critical. The proposed project will investigate an energy efficient variation of freeze wastewater treatment, which will use available cold arctic air to cool the wastewater enough to trigger ice crystallization. When wastewater begins to freeze, more pure layer of ice forms on its surface. This upper layer of ice can be separated from the unfrozen liquid below, now with a higher contaminant concentration, and subsequently melted to obtain pure water. Because the method will rely on natural cold climate freezing, energy need only be consumed to break, separate, and transport the purified ice from the wastewater pond area to melting ponds.

freeze crystallization, eutectic freeze crystallization, crystal growth rate, ice purity, icebreaking concept development, machine design,
conveyor belt, computer aided analysis

LUT Focus Areas

Last updated on 2019-30-01 at 15:35