Irish Water commences upgrade to its largest waste water treatment plant

Ringsend WwTP
Irish Water is working with Veolia to upgrade the largest wastewater treatment works in Ireland to handle future growth

Global resource management company Veolia has commenced work on an €80 million upgrade to the Ringsend wastewater treatment plant near Dublin, the largest such plant in Ireland, with Irish Water.

The upgrade to the works, which currently service over 40 per cent of the national population, will accommodate projected future growth and improve the quality of the treated wastewater discharged to the Liffey estuary.

The two-year capacity upgrade is one part of an overall investment of €400 million by Irish Water in the Ringsend WwTP Upgrade Project. Subject to planning permission, the overall project will enable full treatment of wastewater for the equivalent of 2.4 million people, meeting all foreseeable development needs to at least 2025.

Minister for Housing, Planning and Local Government, Eoghan Murphy, TD said: “This investment will ensure that the highest treatment standards are being deployed and utilised in Dublin, that we are preparing for future housing, population and economic growth and that we meet the stringent requirements of the EU’s Wastewater Treatment directives.”

Managing Director for Irish Water, Jerry Grant said: “This is a priority project for Irish Water and is vital for future social and economic development in Dublin, for public health and for improving the waters and ecology of Dublin Bay.”

Aerobic granular sludge (AGS) technology has been selected by Irish Water for deployment at Ringsend. The company is already using this nutrient-reduction treatment technology at its Shanbally and Clonakilty wastewater treatment plants.

Irish Water awarded the Capacity Upgrade Contract to Veolia Water Ireland Ltd  in December 2017, with construction of this phase awarded to PJ Hegarty & Sons DC Joint Venture.