16 Aug 2016

Royal HaskoningDHV has been appointed by Irish Water to the Ringsend Wastewater Treatment Plant project team to provide expertise on its sustainable wastewater reduction treatment technology, Nereda®. The Ringsend Wastewater Treatment Plant was originally designed to treat wastewater for a capacity of 1.64 million population equivalent (PE) but is now operating over that capacity at 1.9 million PE. This project is vital as the population of Ireland’s capital continues to grow and the economic needs of the area continue to expand.

Nereda PPU2, Dublin, Ireland | Royal HaskoningDHV

In 2012 planning permission was granted for a 9km long sea outfall tunnel to relocate the discharge of treated effluent into the Irish Sea. Since this planning permission was granted, this advanced, nutrient-reduction treatment technology known as Aerobic Granular Sludge (AGS) has been identified as an alternative treatment process, which would allow the discharge of treated wastewater to remain at its current location, removing the need to build the tunnel, and therefore delivering significant savings on this project estimated to be in the region of €170 million.

The Nereda® aerobic granular sludge technology combines a small footprint with high treatment efficiency and effluent quality, thus allowing the treatment process and sustainable discharge to remain at the existing site in Dublin Bay. Following the upgrade project, the Ringsend Wastewater Treatment Plant will have the capacity to treat the wastewater of 2.4 million population equivalent (PE) in compliance with the EU water quality directives.

René Noppeney, Royal HaskoningDHV’s Global Director for Water Products & Innovation said: “We are very proud to contribute to upgrading one of the world’s biggest municipal wastewater treatment plants in a sustainable manner by providing expert knowledge on our Nereda® aerobic granular sludge technology. The use of Nereda® would ensure that all wastewater generated in the Greater Dublin Area is appropriately treated to safeguard human health and protect the environment in compliance with Europe’s Urban Wastewater Treatment Directive.” 

Royal HaskoningDHV is working on Irish Water’s Ringsend Wastewater Treatment Plant Upgrade Project in a consortium with its Irish partners, TJ O’Connor & Associates and J. B. Barry and Partners.  Overall completion of the Ringsend Project is estimated to be in the early 2020’s.

Subject to planning permission the Ringsend Wastewater Treatment Plant in Dublin will be the fourth plant that Nereda® technology will be in use in Ireland including Clonakilty, Carrigtwohill and Cork Lower Harbour.

More information

Nereda Wastewater Treatment - How does it work?