Nereda® Technology - Wastewater Treatment Solutions by Royal HaskoningDHV

Published on by for Royal HaskoningDHV

Nereda® Technology - Wastewater Treatment Solutions by Royal HaskoningDHV

Nereda is the wastewater treatment technology that purifies water using the unique features of aerobic granular biomass.

Nereda is sustainable and cost-effective: it requires a quarter of the area of conventional activated sludge installations and the process can reduce up to 50% on energy costs. The award-winning technology was invented by the Delft University of Technology in the Netherlands and developed in a unique public-private partnership between the University, the Dutch Foundation for Applied Water Research (STOWA), the Dutch Water Authorities and Royal HaskoningDHV.

HOW DOES IT WORK?

Biomass in Nereda develops as fast settling aerobic granular sludge.

These granules have excellent settling properties and therefore Nereda does not require a separate time-consuming decant phase like conventional SBR's. Further, all the biological treatment processes take place simultaneously in the granules, requiring only one tank.

Due to the distinctive characteristics of aerobic granular biomass, Nereda technology uses an optimised SBR cycle:

  1. Simultaneous influent feed and effluent discharge.
  2. Simultaneous biological removal of organic, nitrogen and phosphorus components.
  3. Fast settling phase, in this phase the biomass is separated from the effluent and Nereda is ready for a new cycle.

Since the effluent is pushed out of the tank, discharge of the effluent does not require moving decanters.

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