Activated carbon filter having plural layers

Details Activated carbon filter having plural layers Activated carbon filter having plural layers

1977-11-21

1979-08-28

Hart, Charles N.

Liquid purification or separation

Particulate material type separator, e.g., ion exchange or...

With rehabilitation means

210290, B01D 2314

Patent

active

041660374

ABSTRACT:
An adsorbtion filter for water including a housing containing a plurality of layers of granules of different types of activated carbon material with the carbon material of a respective layer having substantially the same mesh size, apparent density and adsorbtive capacity, the layers being juxtaposed and the materials of the respective layers having decreasing internal pore size and increasing indices of retentivity proceeding in a direction from the inlet to the outlet of the filter.

REFERENCES:
patent: 293745 (1884-02-01), Hyatt
patent: 2057237 (1936-10-01), Hoop
patent: 3814247 (1974-06-01), Hirs
patent: 3876546 (1975-04-01), Hsiung et al.

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