The Celleco Centerdisc CDP disc filter also has on open rotor instead of a centershaft. In this case the rotor extends out to the periphery, where longitudinal filtrate channels are arranged along the length of the filter The outer channel concept provides agitation in the vat, which ensures a uniform feed consistency. The rotor design includes an inherent barometric drop leg, allowing the filter to be installed at a Jower level in some applications.
The CDP filter is insensitive to variations in flow rate and feed consistency. Its principal application is fiber recovery from white water - sometimes combined with dewatering of paper machine broke.