SSF/x slow sand filter

Details SSF/x slow sand filter SSF/x slow sand filter

2005-11-22

2005-11-22

Cecil, Terry K. (Department: 1723)

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Fluid pressure responsive

C210S093000, C210S094000, C210S137000, C210S269000, C210S288000

Reexamination Certificate

active

06966980

ABSTRACT:
The SSF/x slow sand filter for use in treating drinking water for homes or rural villages with features providing simpler on-site assembly, preset maximum flow, easy monitoring of pressure head loss, protection of piping, and a harrowing system for cleaning. The filter employs a novel hydraulic scheme which places most pipe and plumbing within the filter vessel. The filter employs a novel device that combines flow control, pressure measurement, freeze protection, and anti-siphon features. This in combination with a relatively shallow supernatant level provides for consistent reliable operation, easy maintenance, and reasonably long filter runs as deemed very desirable in remote rural locations.

REFERENCES:
patent: 3823824 (1974-07-01), Close
patent: 5032261 (1991-07-01), Pyper
patent: 5112483 (1992-05-01), Cluff
patent: 5264129 (1993-11-01), Simpson et al.
patent: 5993672 (1999-11-01), Manz

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