EasyMining´s Aqua2N technology removes ammonium nitrogen from wastewater streams and converts it to ammonium sulphate.

Nitrogen, one of the key nutrients in mineral fertiliser, is crucial for agriculture to be able to produce enough food. But the production of nitrogen fertiliser with traditional methods involves burning fossil gas and causes enormous greenhouse gas emissions.

At the same time, wastewater treatment plants remove nitrogen from wastewater. With today’s bacteria-based methods, this nitrogen is simply released back into the air and goes to waste.

With the Aqua2N technology, by contrast, the nitrogen is recovered. It can be used immediately to produce fertilisers with reduced climate impact compared to traditional production, creating a loop. Also, no laughing gas (N2O) is produced.

Circular nitrogen

Global climate emissions, caused by nitrogen fertiliser, can be avoided when wastewater treatment plants switch to the Aqua2N technology and start producing circular nitrogen fertiliser.

How does it work?

In the Aqua2N process nitrogen is captured by an precipitation chemical and separated from the wastewater.

Re-Fertilize project

The EU LIFE-financed project LIFE RE-Fertilize has demonstrated the Aqua2N-process in an operational environment.


Removes >95% of NH4-N

Treatment plants remove 95% of the ammonium nitrogen from sludge liquor and convert it into a valuable new commodity. This also lets operators increase overall capacity and improve efficiency.

Improves carbon footprints

Reduces nitrous oxide emissions from the treatment plant by 15–30%. In addition, the ammonium sulphate generated has a much lower carbon footprint than that traditionally produced.

Effective fertiliser product

The ammonium sulphate produced is an effective fertiliser that fulfils European Fertiliser Product Regulations. Its agronomic effect is comparable to current commercial ammonium sulphate.

Robus process

More robust than biological processes. Increases the reliability of treatment plant operation.

Complies with coming legislation

Aqua2N will help plant operators comply with coming legislation such as the 2022 EU Proposal for a revised Urban Wastewater Treatment Directive.

Turnkey solution

EasyMining offers a turnkey solution including planning and design, construction, commissioning, and start-up

For more information, please contact:

Anna Lundbom
Marketing and Product Sales Manager

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