a. a rotary drum having an inlet for receiving liquid to be filtered;

b. a drive for rotatively driving the rotary drum;

c. one or more disc-shaped filter members secured about the drum and extending outwardly therefrom, each disc-shaped filter member being rotatable with the drum;

d. each disc-shaped filter member including a filter disposed on each side thereof;

e. each disc-shaped filter member including a filter frame having a plurality of circumferential spaced radial supports that project outwardly from the drum and divide the disc-shaped filter member into a plurality of compartments for holding liquid to be filtered where each compartment is generally defined, in part at least, by two consecutive radial supports and the filters;

f. an array of openings formed in the drum with each opening being aligned with a respective compartment for permitting liquid to pass from the drum into the respective compartments of the one or more disc-shaped filter members; and

g. each radial support having a length and a substantial open area formed to substantially along the entire length of the radial support for permitting liquid to flow from a leading compartment into a trailing compartment through the substantial open area along the length of an intervening radial support as the drum and the one or more of the disc-shaped filter members are rotated.