Nereda Technology

Jun 17, 2019

Aerobic granular sludge (AGS) is seen as the modern standard for wastewater treatment. Subsequently, research efforts are quickly developing in this field. A coordinated research public-private partnership in the Netherlands led to the development of the Nereda® technology – a full-scale application of AGS.


What are the benefits to implementing your technology?

The operational full-scale plants have met effluent requirements whilst achieving more sustainable wastewater treatment with key advantages (compared to similarly loaded activated sludge systems):

  • 25-75% reduction in treatment system footprints as a result of higher reactor biomass concentrations and the non-use of secondary settling tanks;
  •  20-50% energy usage reduction and;
  •  Associated capital and operational cost savings.

In addition, a new possibility for extracting alginate-like polymers from AGS has emerged, which could provide sustainable reuse opportunities.

Has the technology been tested, demonstrated, or implemented anywhere to date?

Currently, over 30 full scale plants are operational or under construction across 5 continents.

What are some of the next steps needed to advance the technology?

Nereda® technology is in TDL Level 4. It is qualified through testing and implemented under full operational conditions and has a certain degree of initial use. Royal HaskoningDHV has been  using the technology for about three years with partners in Australia, Ireland, Brazil, Spain, Portugal, South Africa, Switzerland, and India. The technology has not been used at U.S. treatment facilities yet.

How has LIFT helped, or how can LIFT help?

Royal HaskoningDHV wants to develop partnerships with parties that have specific market knowledge in order to realize Nereda® technology projects in the United States. We presented Nereda during the LIFT forum in New York in 2015.