Waste management

In addition to standard waste management (sorting…), our company also deals with the problem of management of excess sludge at waste water treatment plants.

Aerobic digestion of dissolved organic substances in waste water produces excess organic sludge as a result of growth of microorganisms that have oxidised organic substances and partially used them for their growth. In general, 1kg of organic pollution expressed as BPK5 results in an average of 1.3kg of excess (secondary) sludge. In addition to the resulting excess sludge, besides dissolved substances, undissolved particles that settle in the pre-treatment phase as primary sludge flow into the treatment plants in the treatment process itself.


Sludge treatment procedures:


  • Static and dynamic thickeners, thickening tables, rotary thickeners…


  • Centrifuges, chamber filter presses, presses, tape filter presses…

Solidification and hygienisation

  • Preparation of sludge for landfill, prevention of development of microorganisms.

Anaerobic sludge digestion – digester

  • Combined liquid/solid separation and digestion of separate solids.
  • Digestion of separated sludge (CSTR systems, batch systems, plugflow systems, fed-batch systems, DSFF, UASB, AAFEB…).

Sludge drying

  • Centrifuges (sludge drying up to approx. 90% dry matter)
  • Rotary dryers (granules 90–96% of dry matter)
  • Tape dryers (sludge drying up to approx. 90–96% of dry matter)
  • Solar drying (sludge drying up to approx. 80% of dry matter)
  • Continuous/circulation or continuous dryers
  • Spray dryers
  • Instantaneous dryers
  • Fluidised layer dryers

Sludge incineration

Upgrade to the drying technology or standalone technology without prior separate drying phase

  • Plasma,
  • Standard incineration plants.


  • Static
  • Dynamic