The PISTA Turbo grit washer uses Tri-Cleanse Technology to produce clean grit while minimizing the odor caused by putrescible organics and the costs associated with growing landfill restrictions. It boasts a sleek, compact design with a similar footprint to Smith & Loveless’s screw conveyor. The PISTA Turbo grit washer uses an inlet hopper to receive the mixture of water and grit from the second-stage PISTA grit concentrator, and it is equipped with an energy dissipation zone to prevent turbulence in the remaining portion of the hopper. Parallel plates located in the settling zone of the hopper improve the retention of fine grit.