Filling material for percolating filters for the treatment of fl

Details Filling material for percolating filters for the treatment of fl Filling material for percolating filters for the treatment of fl

1994-08-17

1999-12-07

Cannon, James C.

Stock material or miscellaneous articles

Three or more coplanar interfitted sections with securing means

156 84, 156 85, 156250, 156265, 210615, 210483, 210488, 2105001, 428 77, 428190, 428192, B01D 3904, C02F 304

Patent

active

059979720

ABSTRACT:
Filling material for percolating filters used in the biological treatment of fluids are provided with strips which are made of plastic and are connected to one another via a transversely directed holding web. The strips are arranged one above the other in a plurality of layers in order to increase the strip density. In the filling material according to the invention, the strips are provided with different cross-sections over their length. For example, the strips may be reduced in width in regions adjacent to their connection to the holding web. As a result, the strips can be arranged in one layer with an increased strip density.

REFERENCES:
patent: 4219420 (1980-08-01), Muller
patent: 4929484 (1990-05-01), Basse
patent: 5104716 (1992-04-01), Wittek
patent: 5160395 (1992-11-01), Basse

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