Media for rotating biological contactor
AssigneeGeo-Form, Inc.
InventorMichael J. McManus
Life of this patent
Estimating the term…
Abstract
A random media member for a rotating biological contactor. The media member has a concave hemispherical shaped body with an inner tube with radial plate like ribs and an outer tube with radial plate like ribs, all molded together as an integral part. In one embodiment, a hollow cylinder is molded to the outside of the body. In another embodiment, parallel spaced legs are substituted for the outer cylinder. The tubes and ribs provide surfaces for bacteria to attach.
Claims15
In a rotating biological contactor system for treating waste water, said system comprising tank means, drum means rotatably supported in said tank means, and inlet means and outlet means each connected to said tank means for directing said waste water through said tank means, the improvement comprising:
- random media members in said drum means providing an exposed area, said exposed area defining means for supporting bacteria from said waste water;
- each of said random media members having an impervious, generally cup-like body;
- said body having a central axis, an outer generally convex surface, and an inner generally concave surface;
- and,
- projection means fixed to said outer generally convex surface, said projection means extending therefrom generally parallel to said central axis of said body for engaging other media members to provide separation for said random media member from said other media members.
In a rotating biological contactor system for treating waste water, said system comprising tank means, drum means rotatably supported in said tank means, and inlet means and outlet means each connected to said tank means for directing said waste water through said tank means, the improvement comprising:
- random media means in said drum means for providing exposed media area and for supporting bacteria from said waste water;
- said random media means comprising impervious hemispherical shaped media members each having a generally hemispherical inside surface, an outside surface, an axis member and radially extending plate-like ribs fixed to said axis member and to said generally hemispherical inside surface;
- and,
- projection means fixed to said outside surface, said projection means extending therefrom generally parallel to a central axis of each of said impervious hemispherical shaped media members for engaging other media members to provide separation for each of said impervious hemispherical shaped media members from said other media members.
A random media member for use in a rotating biological contactor comprising an impervious body having a concave inner surface, a convex outer surface, a rim and a central axis perpendicular to said rim;
- and,
- an outer projection means attached to said convex outer surface generally parallel to said central axis for engaging other media members to provide separation for said random media member from said other media members;
- wherein said random media member defines means for supporting bacteria.
Dependencies are inferred from the claim text.