HUBER Grit Trap GritWolf®

Grit trap with integrated lamella separator

  • High separation efficiency of up to 75 μm
  • Small footprint
  • Integrated floating material separation
  • Ideal for varying grit concentrations

The new HUBER Grit Trap GritWolf® is different from space-consuming aerated grit channels as it consists of an aerated and an unaerated grit trap chamber.

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In the first smaller chamber the wastewater is exposed to finebubble aeration. Floatable particles rise to the water surface where they accumulate and are removed by a paddle system just before the outlet. The second chamber is unaerated and equipped with lamella units. Due to the deep flow approach and the advantages of a lamella separator, the GritWolf® reliably removes even very fine grit.

The grit trap tank is usually made of concrete, stainless steel tanks are however available as an option for smaller plant sizes. The GritWolf® can also be integrated into existing grit trap chambers. The horizontal grit conveyor, the lamella packages and the paddle system for grease removal are manufactured from corrosion-resistant materia.

The grit is removed axially from the HUBER Grit Trap GritWolf® by a time-controlled horizontal screw conveyor. Even large ‘sand dunes’ occurring under stormwater conditions (stormwater flushes) are therefore evenly dosed into the suction area of a grit pump. The grit pump delivers the grit-water mix into a HUBER Coanda Grit Washer RoSF4 that produces clean grit in a proven way, thus perfecting the entire grit treatment system.

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Applications

  • New wastewater treatment plants
  • Grit trap refurbishment
  • Pre-treatment for membrane bioreactors (MBRs)
     

Benefits

Benefits

  • 95% separation of particles size ≥ 75 μm
  • Small footprint and space-saving compact design
  • Low pressure loss
  • Regulated supply of grit to the grit pump
  • Floating material separation with automatic forced removal (option)
  • < 3% loss on ignition with downstream grit washing

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Design Sketch

Design Sketch

Schematic drawing: HUBER Grit Trap GritWolf® with integrated lamella separator

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