23 Jun 2016

The Royal HaskoningDHV Nereda wastewater treatment technology is applied for the design and realization of the construction of the wastewater treatment plant (WWTP) in Utrecht. The installation is in the heart of the city and handles daily 75 million liters of wastewater. Water Authority Hoogheemraadschap Stichtse Rijnlanden (HDSR) is building a new plant due to stringent quality standards and because the current system is obsolete in the future. The contract was awarded to the combination Heijmans and GMB.

"The Nereda process saves energy and space and also provides a very good final result. After this investment the city of Utrecht is for a long time assured of a high-performing sewage treatment. And that is extremely important for the water quality in our city", said Constantine Jansen op de Haar of HDSR.

Higher nitrogen and phosphate removal on smaller footprint

Lay out Nereda WWTP Utrecht, the Netherlands

Image: The lay out of the new WWTP (marked within the dotted lines) the showing the small footprint © by Heijmans and GMB


The new sewage treatment plant is designed to treat the wastewater of 430,000 people. The plant removes twice as much nitrogen and phosphate and is 30% more efficient in energy consumption than the current installation. The footprint is much smaller.

The project includes the design, construction and 10-year maintenance of the new wastewater treatment plant. The launch of the preparatory work will start this year. Start of the construction is planned in 2017. The project completion is scheduled for early 2019, followed by a maintenance period of 10 years.

Nereda WWTP Utrecht, the Netherlands

The existing situation with the vacant lot where the new new sewage treatment plant will be built. © by Heijmans and GMB