Facts & Figures

ClientIrish Water
Wastewater type Municipal
Location Dublin Ringsend, Ireland
StatusUnder construction
Average capacity 21,700 m3/day │ 94,000 PE (60 g BOD)
Peak Flow6,750 m3/hour
Pre-treatmentScreening, Grit & Grease removal and & Primary Sedimentation
Post-treatment UV disinfection

About the Dublin Ringsend WWTP Process Proving Step 1 and 2

To confirm the suitability of the Aerobic Granular Sludge technology at the Ringsend conditions a two-step approach is being used:

  1. Process Proving Step 1 (PPS1): comprising of a semi-technical unit to scale (5 m3/d) for process proving and process optimisation.
  2. Process Proving Step 2 (PPS2): comprising of the retrofit of one of the 24 existing SBR cells into an AGS system for validation of the process design and verification of the technical construction procedures.

Nereda Process Proving Step 2 - Ringsend Dublin Ireland | Royal HaskoningDHV

Image: Process Proving Step 2, retrofit of an existing SBR cell of the Ringsend WWTP

Following the pilot scale test of the Nereda technology, the retrofit of one of the existing SBR cells with Nereda internals and Aquasuite® Nereda Controller has been completed in 2017. This Nereda cell has been in operation since June 2017. After a swift start-up it complies with effluent requirements.

The existing Cell has a designed capacity of 38,000 PE and the retrofit under Process Proving Step 2 increases this capacity to 94,000 PE.

Nereda PPU2, Dublin, Ireland

Image: the reconstruction of an existing SBR cell (PPS2)

For more information on the Dublin, Ringsend WWTP Upgrade & Expansion Project, click here.


Nereda® Videos

All videos over Nereda® Technology