• SEPARATION products
  • Screens, drains, and presses
  • Spirosand conveyor

SpiroSand for removal of sand and heavy sediments from sewage effluent

The SpiroSand is a simple and reliable piece of equipment that removes sand and heavy sediments as well as floating debris from sewage effluent before they are able to plug equipment or cause abrasive wear to downstream machinery.

ANDRITZ Spirosand for sand removal

ANDRITZ Spirosand for sand removal

ANDRITZ spirosand installation for removal of sand and heavy sediments

ANDRITZ spirosand installation for removal of sand and heavy sediments



The SpiroSand includes a shaftless screw device that rests on high-resistance wearing bars. When in the pulling position, the drive unit is installed at the top end of the unit, ensuring a watertight shaft seal.

  • Less sediment in wastewater and other fluids thanks to effective separation
  • Higher overall system capacity by removing impurities before processing
  • Reduced abrasive wear on downstream machinery and equipment
  • Smoother operations, reduced chance of plugging
  • Overall reduction of waste volume because fluids can be re-used
  • High-quality components for reliability and long life


  • The water/sand mix enters from the top of the tank.
  • The special inlet area design makes the flow laminar for better decantation.
  • Sand settles at the bottom and is transported slowly through the submerged section of the U-trough (5 rpm). Once the level of the sand in the U-trough is higher than the water level and before reaching the discharge point, the excess water drains back down into the reservoir, leaving the sand relatively dry.
  • Floating debris is also removed.
  • Water is circulated through an overflow system.




  • Municipal wastewater
  • Industrial wastewater



Nom. Capacity (m3/hr)

Tank volume (m3)

SpiroSand SD260



SpiroSand SD320



SpiroSand SD355



SpiroSand SD420



Operating principle of Spirosand conveyor

SpiroSand operating principle


Find out more ...

Intelligence for machine and process control

The brain behind your operation: Metris addIQ control systems

Read more

Our services

Whether you need spare parts, rentals, local service, repairs, upgrades, or modernization of your equipment.

Learn more about our Services