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Technology in the Budapest Central Wastewater Treatment Plant (BKSZTT)

Wastewater treatment technology in BKSZTT

The following pages provide information on wastewater treatment technology.

You can find photos about technology in the Gallery >>

General description

Hourly loads of certain cleaning stages are the following:

Mechanically pre-treated peak volume (fine grids and sand traps): 37,500 m3/h, 900,000 m3/d.
Peak volume treated in the pre-settler: 26,250 m3/h, 630,000 m3/d.
Peak period volume treated in the biological purification unit: 21,875 m3/h, 525,000 m3/d.

Volumes between 37,500 m3/h and 26,250 m3/h reach the Danube only after mechanical pre-treatment, while volumes between 26,250 m3/h and 21,875 m3/h reach the Danube only after pre-treatment.


Main technology steps:

  • fine grids,
  • sand and fat traps with lamellar pre-settlers in one structure (SEDIPAC 3D),
  • cleaning with active sludge, connected with post-settlers and disinfection basins,
  • separated sludge thickening: gravity concentrators for the raw sludge and belt filters for the excess sludge,
  • sludge pasteurization and thermophilic sludge digestion,
  • extraction of the biogas’ energy content,
  • sludge dewatering using a centrifuge and sludge storage in silos.
Technology in the Budapest Central Wastewater Treatment Plant (BKSZTT)

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