Innovative energy interaction with a waste incineration plant leads to advanced biological P- and COD-removal and costs reduction of the extension of Nijmegen wastewater treatment plant

The extension of the Nijmegen wastewater treatment plant for full nitrogen and phosphorus removal is enormously reduced by introducing an innovative energy interaction with an incineration plant. A reduction of the investment costs of 30–40% has been reached. Heating up a part of the primary sedimentation overflow leads to a constant process temperature of 20–25 °C and an advanced biological phosphorus and COD removal.