Liquid purification or separation – Flow – fluid pressure or material level – responsive – Maintaining stream pressure or flow
Patent
1989-11-27
1991-07-16
Wyse, Tom
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Maintaining stream pressure or flow
210266, 210281, 210286, 210289, 210293, B01D 2412
Patent
active
050322613
ABSTRACT:
A filtration system for filtering out bacteria, Giardia cysts, turbidity and other impurities in raw water supplied to a home or the like including a sealed container divided into an upper and a lower chamber by a support plate, the support plate supporting a quantity of filter material sufficient for filtering out undesired bacteria, turbidity and other impurities from the raw water; the sealed container having a raw water inlet pipe communicating with an inlet area above the filter material for supplying the raw water, and a filtered water outlet pipe communicating with the lower chamber for exhausting filtered water from the container; and further including a geofilter cloth provided on top of the filter material for supporting a biological "schmutzdecke" growth thereon which, along with the filter material, filters out bacteria, turbidity, Giardia cysts and other impurities. The sealed container also includes a quick drainage pipe and a treated water supply which are provided for cleaning of the filtration system.
REFERENCES:
patent: 3623978 (1971-11-01), Boze et al.
patent: 4222877 (1980-09-01), Silva
patent: 4260426 (1981-04-01), Werfelman
patent: 4664812 (1987-05-01), Klein
patent: 4749479 (1988-06-01), Gray
patent: 4765892 (1988-08-01), Hulbert et al.
Witherell, L. E. and Herbert, L. M., "An Epidemiological Investigation of Two Outbreaks of Giardiasis in Vermont During 1974," Journal of the New England Water Works Assn. vol. 91, No. 2, pp. 102-118, (Jun. 1977).
Abstract, "Small H.sub.2 O Systems Technology Seminar," U.S. EPA, MERL, Cincinnati, Ohio (Apr. 21-23, 1982).
Anon, "Development of Basic Data and Knowledge Regarding Organic Removal Capabilities of Commercially Available Home Water Treatment Units Utilizing Activated Carbon": Phases 1-3.
Dufresne-Henry, Inc.
Wyse Tom
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