Method and apparatus for treatment of aqueous solutions
AssigneeThe Graver Company
InventorsBruce L. Libutti, Kurt Bozenmayer
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Abstract
A method and apparatus for removing ionic and suspended particulate impurities from a liquid by directing the liquid through a bed including a mixture of ion exchange fibers and inert fibers. The bed also may include a mixture of finely ion exchange particles. The bed may be a precoat layer that is applied on a filter support.
Claims35
A method for removing ionic and suspended particulate impurities from a liquid containing said impurities, comprising:
- dispersing freely flowing ion exchange fibers and inert fibers in a liquid medium to produce a precoat slurry;
- depositing the slurry on a filter support and carrying away at least a portion of the liquid medium to produce a precoated bed comprising a clumped mixture of the ion exchange fibers and the inert fibers;
- and
- directing a liquid containing ionic and suspended particulate impurities through the bed.
A method for removing ionic and suspended particulate impurities from a liquid containing said impurities, comprising:
- dispersing freely flowing ion exchange particles, ion exchange fibers, and relatively inert fibers in a liquid medium to produce a precoat slurry;
- depositing the slurry on a filter support and carrying away at least a portion of the liquid medium to produce a precoated bed comprising a clumped mixture of the ion exchange particles, the ion exchange fibers and the inert fibers;
- and
- directing a liquid containing ionic and suspended particulate impurities through the bed.
The method of claim 24 wherein about one percent by weight to about ten percent by weight of said resin particles have an effective diameter in the range of about one to about twenty microns, based on the total dry weight of said resin particles.
A filter for removing ionic and suspended particulate impurities from a liquid, comprising:
- a filter support and a precoated bed including a clumped mixture of ion exchange particles, ion exchange fibers, and inert fibers.
Dependencies are inferred from the claim text.