Internally-fed rotary sieve

Operating principle

  • The stainless steel internally-fed rotary sieve is an excellent alternative to the classic externally-fed rotary sieve for applications prone to clogging and/or with high sand content.
  • The effluent is fed by pumping or by gravity into the cylindrical Johnson-type or round strainer.
  • The waste is retained inside the drum and pushed out at the opposite end by a welded spiral inside the cylinder.

Main applications

  • Industrial wastewater :
    • Applications subject to high clogging
    • Abattoirs, fish farming
    • Effluent with a high sand/grit content (tripe works, vegetable processing, etc.)
  • Urban wastewater
    • Pretreatment of mixed effluents or effluent from a sewer system
    • Treatment of septage


  • Throughput: up to 250 m3/h
  • Mesh: round or Johnson-type: 0.2 – 2 mm


  • Robustness
  • Ease of operation and maintenance
  • Secure inspection hatches
  • Cleaning nozzles (for highly efficient mesh cleaning and declogging)
  • Compacting screw with cleaning lance
  • Automatic bagging of waste

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