Rotating biological filter system
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United States of America Patent
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Feb 9, 1999
Issued Date -
N/A
app pub date -
May 2, 1995
filing date -
Jun 11, 1990
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A biological filter for treating water in an aquatic system, composed of a porous water absorbing body of material adapted for rotation, and a member for supplying water to the body to be absorbed by a portion of the body so as to cause the body to rotate, wherein the member for supplying water to the body is composed of a receptacle located above the water absorbing body, the receptacle defining a water holding volume having a bottom, and the bottom being provided with at least one opening via which water flows out of the volume and onto the water absorbing body under the force of gravity.
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