Patent ID: 7879232

Claim:
A media disk for use in conjunction with a rotating biological contactor, comprising: a first media element having first and second major faces, the first and second major faces having a plurality of projection members extending therefrom, the first major face having a plurality of disk connection members extending therefrom, the plurality of disk connection members having a greater height than the plurality of projection members, the plurality of disk connection members having a tip portion and an area defining a socket portion formed in a base portion thereof; wherein the first media element includes first and second edge portions, wherein a connection portion is formed on either of the first or second edge portions; and a second media element having first and second major faces, the first and second major faces of the second media element having a plurality of projection members extending therefrom, the first major face of the second media element having a plurality of disk connection members extending therefrom, the plurality of disk connection members of the second media element having a greater height than the plurality of projection members, the plurality of disk connection members of the second media element having a tip portion and an area defining a socket portion formed in a base portion thereof; wherein the second media element includes first and second edge portions, wherein an edge connection portion is formed on either of the first or second edge portions; wherein the edge connection portions of the first media element and the second media element are selectively operable to be brought into coplanar direct mating with one another.