Process & contact
Member ESPP, DPP
Liquors with a high ammonium concentration, e.g. wastewater treatment sludge dewatering liquors.
Ammonium sulphate ((NH4)2SO4)
In the first step, the ammonium nitrogen is precipitated with a specific chemical.
In the second step, the precipitant is regenerated and sent back to the first step, and acid is used to convert the nitrogen to a form usable either directly in fertilisers or in fertiliser production.
The process has been demonstrated in operational environment in a demonstration plant (photos) of capacity 4m3/h incoming water (LIFE RE-Fertilize (easymining.com)) and is now being commercialised.