MEDIA FOR A ROTATING BIOLOGICAL CONTACTOR

摘要

A random media member (120) for a rotating biological contactor. The media member (120) has a concave hemispherical shaped body (132) with an inner tube with redial 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 (140) are substituted for the outer cylinder. The tubes and ribs provide surfaces for bacteria to attach.