DEMON®: new technology for nitrogen removal

With the construction of sludge dewatering installation at the sewage treatment in Apeldoorn, The Netherlands and an additional 3rd digester, an additional treatment of the residual streams is necessary. These residual streams contain high concentrations of nitrogen that must be removed. The Veluwe Water Board has commissioned the Grontmij-Logisticon Water Treatment combination to build a de-ammonification plant (Demon®) to remove nitrogen from this waste water. The water board opted for this new technique because of its robustness, low investment costs and low energy consumption.

2nd and 3rd Demon® installation

After a successful construction and start-up of the second Demon® for The Water board Stichtse Rijnlanden (HDSR) at rewage treatment location Nieuwegein (built in a combination of GMB, Grontmij and Logisticon), SNB also opted for a Demon® installation at the Moerdijk site, which the combination Grontmij, Hegeman and Logisticon realized.

Especially suitable for nitrogen-rich water flows

The Demon® process is particularly suitable for wastewater streams with a high concentration of nitrogen. The nitrogen-rich rejection water that is released during dehydration of fermented/ digested sludge is extremely suitable for treatment with Demon®. This way more biogas can be produced, also from external waste streams, without heavily burdening sewage treatment.

    Aquatech Amsterdam 2019


    Amsterdam is home to the world's largest water trade show, Aquatech. Everything in terms of process, drinking and waste water can be found at the Rai Amsterdam with thousands of water professionals.

    From 5-8 November 2019 Logisticon Water Treatment participates at the Aquatech in cooperation with Inge GmbH, Germany. We both strive to set new standards in the field of ultrafiltration and water re-use of which our UF2880 is an ultimate example.

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