Multi-stage microbiological water filter

Details Multi-stage microbiological water filter Multi-stage microbiological water filter

1995-01-23

1996-09-03

Drodge, Joseph W.

Liquid purification or separation

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

With spaced non-particulate separating means

210282, 210489, B01D 2702

Patent

active

055520464

ABSTRACT:
A multiple stage filter having an extended useful life comprising a first stage having granulated activated carbon enclosed by multiple filter wafers, the filter wafer comprising a number of filter media having pore size ranging from 0.45 microns to 5 microns, and a second stage comprising a filter membrane having pore size of 0.2 microns or less and a surface area of several square feet, such that greater than 99 percent of particulates greater than 0.5 microns are removed in the first stage and greater than 99.9 percent of the bacteria and cysts are removed in the second stage.

REFERENCES:
patent: 4636307 (1987-01-01), Inoue et al.
patent: 4717476 (1988-01-01), Scott
patent: 4800018 (1989-01-01), Moser
patent: 4826594 (1989-05-01), Sedman
patent: 4913808 (1990-04-01), Haque
patent: 5019252 (1991-05-01), Kamei et al.
patent: 5045195 (1991-09-01), Spangrud et al.

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