Fluidized bed biological filter system for fish tanks

Details Fluidized bed biological filter system for fish tanks Fluidized bed biological filter system for fish tanks

1995-01-23

1996-06-18

Hruskoci, Peter A.

Liquid purification or separation

Structural installation

Closed circulating system

210258, 210264, 2104162, 210661, A01K 6304, C02F 306

Patent

active

055274552

ABSTRACT:
A fluidized bed biological filter system for fish tanks having a housing having a top wall, a bottom wall, and surrounding side walls that form a water filtering chamber. An inner tubular member extends upwardly from the bottom wall a predetermined height and it has an inlet port in its bottom end that is connected to a pump. An outer tubular member has a closed top wall and also a diameter that is greater than that of the inner tubular member. The outer tubular member is telescopically mounted on the inner tubular member so that both of their bottom ends are surrounded by filtering particulate in the bottom of said housing. The top end of the outer tubular member has a weight chamber into which various amounts of weights may be added depending on the power of the pump and the type of filtering particulate material used. Water from the pump is directed upwardly through the inner tubular member until it strikes the bottom surface of the top wall of the outer tubular member causing the outer tubular member to rise upwardly. The flow of water is then directed downwardly through the annular space surrounding the inner tubular member and as it reaches the bottom end thereof, it will force the particulate material upwardly into a fluidized pattern.

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