Liquid purification or separation – Structural installation – Closed circulating system
Patent
1986-06-05
1988-11-08
Fisher, Richard V.
Liquid purification or separation
Structural installation
Closed circulating system
210232, 2104162, 210435, 210455, 119 5, B01D 2104, B01D 2708
Patent
active
047832584
ABSTRACT:
A filter cartridge comprising a framework and a surrounding envelope of filter material. The framework is reusable and provided with a rough, granular surface texture to provide increase surface area available for the propagation of aerobic bacteria. The envelope is disposable. Thus, biological filtration of the water provided by the aerobic bacteria is not interrupted upon replacement of the filter material. A second filter medium may be disposed within the envelope. The envelope is held in place by a pair of flaps which sandwich an edge of the filter material.
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Willinger Allan H.
Woltmann Klaus
Fisher Richard V.
Millard Wanda L.
Willinger Bros.
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