Grit Washing & Dewatering Comparison

 

PISTA® TURBO™ Grit Washer with TRI-CLEANSE TECHNOLOGY™

The PISTA® TURBO™ Grit Washer featuring exclusive TRI-CLEANSE TECHNOLOGY™ produces clean grit while minimizing the odor caused by putrescible organics and the costs associated with growing landfill restrictions. The grit washer produces washed grit with less than 5% organic material.

The PISTA® Grit Screw Conveyor offers high retention of fine grit without the burden of high maintenance.

Advantages:
  • Parallel plates located in the settling zone of the hopper improve the retention of fine grit.
  • The patented screw contains mixer, fluidizing vanes in the washer hopper with a continuous shaft design.
  • Drier, cleaner grit with less putrescible organic material
  • Less odor
  • Parallel plates aid in fine particle retention
  • Choice of materials: 304 Stainless, 316 Stainless or Painted Carbon Steel
  • System includes only one motor and drive to maintain
  • Grit retention of 95% down to 140 mesh (105 microns) particle size

PISTA® TURBO™ Grit Washer with TRI-CLEANSE TECHNOLOGY™

 

 

PISTA® Grit Screw Conveyor

The PISTA® Grit Screw Conveyor is designed to work in concert with the complete PISTA® Grit Removal System, providing superb dewatering & retention of fine grit without the burden of heavy maintenance. The dewatered grit discharges into a container for disposal while the flow and residual organics are returned to the inlet channel prior to the grit chamber, typically 93% of the flow and 95% of the organics when coupled with the second-stage PISTA® Grit Concentrator.

Unique Design Elements Retain Ultra-Fine Grit
The PISTA® Grit Screw Conveyor’s separate inlet zone, large Lamella parallel plate section that acts as a high-rate settling device, and double-sided weir trough work in concert to capture silt and and ultra fine grit. The inlet zone facilitates energy dissipation in order to reduce turbulence. This allows easier settling in the plate section while the larger weir trough lowers the carry-over rate.


PISTA® Grit Screw Conveyor