Water filter
OwnerTheodore L. Wilkinson, Frank J. Sorkinventors
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Abstract
An improved filter device is provided for removing contaminants from water comprising a filter housing having an inlet at one end for water to be purified and an oulet for purified water at an opposing end, said filter device including in sequence first, second and third layers of purification material, a first layer of purification material comprising metallic particles which establish a suitable redox potential in the first layer, a second layer of purification material comprising activated carbon, and a third layer of purification material comprising a weak acid ion exchange resin.
Claims19
A filter device for removing contaminants from water comprising:
- inlet means for water to be treated and an outlet means for treater water,
- first, second and third water purification materials in sequence from said inlet means to said outlet means,
- said first purification material comprising a bed of particles of dissimilar metals having first and second redox potentials such that conditions are established in the bed for spontaneous oxidation and reduction reactions between contaminants present in the water and said metal particles upon contact of said water with said first material,
- said second purification material comprising activated carbon, and
- said third purification material comprising a weak acid cation exchange resin.
The filter device of claim wherein said second purification material comprises silver-treated activated carbon.
A method for the purification of water which comprises sequentially contacting water with first, second and third layers of water purification materials,
- said first layer of purification material comprising a bed of particles of dissimilar metals having first and second redox potentials such that conditions are established in said bed for spontaneous oxidation and reduction reactions between contaminants present in the water and said metal particles upon contact of said water with said first material,
- said second layer of purification material comprising activated carbon, and
- said third layer of purification material comprising a weak acid cation exchange resin, and
- recovering purified water subsequent to contacting said first, second and third layers.
Dependencies are inferred from the claim text.