Rolling Grit Equipment from Walker Process provides a total system for grit removal and dewatering. Efficient grit removal is a necessity to provide protection from the abrasive effects of grit on plant equipment and to prevent high grit loads on digesters. In the grit basin, a centrally located eductor tube induces a rolling action that maintains organics in suspension while causing settled grit to be carried to a center hopper where an airlift pump transfers the grit to an inclined screw GritWasher external of the basin. Important features of the Rolling Grit design are that preaeration is provided and the absence of moving parts in the grit basin reduces costly maintenance associated with screws or chain and flight mechanisms.