Horizontal cross flow filtration and rinsing of ice from saline slurries

Authors

  • Leland C. Dickey,

    Corresponding author
    1. Eastern Regional Research Center, Agriculture Research Service, U.S. Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038, U.S.A.
    • Eastern Regional Research Center, Agriculture Research Service, U.S. Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038, U.S.A.
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  • Michael F. Dallmer,

    1. Eastern Regional Research Center, Agriculture Research Service, U.S. Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038, U.S.A.
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  • E. Richard Radewonuk,

    1. Eastern Regional Research Center, Agriculture Research Service, U.S. Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038, U.S.A.
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  • Andrew Mcaloon

    1. Eastern Regional Research Center, Agriculture Research Service, U.S. Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038, U.S.A.
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Abstract

Continuous filtration of ice slurries (with particles of about 80 μm diameter) to generate potable water was investigated. In the filtration process the ice is driven through a stationary channel with liquid draining through narrow slots in the base. Most of the liquid drained from the slurry at ambient pressure and the residual liquid trapped in the pores of the consolidated ice bed was displaced to a vacuum after downstream rinsing with sprayed or melt water. The cost of this approach may be competitive with reverse osmosis if an automated unit is developed.

Abstract

On a étudié la filtration continue de suspensions de glace (particules de 80 μm de diamètre) afin de produire de l'eau potable. Dans le procédé de filtration, la glace est amenée dans une conduite statique munie à la base de fentes étroites par lesquelles le liquide se décharge. Le plupart du liquide retiré de la suspension à la pression ambiante ainsi que le liquide résiduel piégé dans les pores du lit de glace consolidé a été déplacé vers un vide après un rinçage en aval avec de l'eau pulvérisée ou de la glace fondue. Le coǔt de cette méthode peut ětre compétitif avec celui de la méthode par osmose inverse si on utilise un système automatisé.

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