Take the shortcut. The ANAMMOX® process is a cost-effective and sustainable way of removing ammonium from effluents and ammonia from waste gas. Compared to conventional nitrification/denitrification savings on operational costs can reach up to 60%, while CO2 emission is reduced.

The ANAMMOX® conversion is an elegant shortcut in the natural nitrogen cycle. Anammox bacteria convert ammonium (NH4+) and nitrite (NO2-) into nitrogen gas. Paques developed the process for commercial purposes in cooperation with Delft University of Technology and the University of Nijmegen. Since the first full-scale plant started up in 2002, many other ANAMMOX® plants were implemented worldwide.


The ANAMMOX® process can be used for the removal of ammonium from nitrogen rich effluents, which for example can be found in:

  • Municipal wastewater treatment (sludge rejection water)
  • Organic solid waste treatment (landfills, composting, digestion)
  • Food industries
  • Manure processing industry
  • Fertiliser industry
  • (Petro) chemical industry
  • Metallurgical industry
  • Semi-conductor industry

For more information, please visit Paques: PAQUES