Castletroy WwTP, Co. Limerick

The overall scope of this project was to replace the existing surface aerators with a Fine Bubble Diffused Aeration System to cater for a design population of 35,000 PE.

We completed every stage of the design, construction, installation and commissioning for this project with the following overall scope:

  • Removal of existing aeration equipment.
  • Fully functional fine bubble diffused aeration (FBDA) system on stainless steel removable grids
  • Stainless steel piping
  • Design, manufacture and installation of 4 no. bridges to provide access for all valves on FBDA System
  • Five no. blowers Aerzen Hybrid D24S positive displacement blowers
  • Complete mechanical and electrical installation
  • Adjustments to existing electrical system and PLC/SCADA to cater for new FBDA system
  • Testing and commissioning

In addition to the FBDA contract, Conway Engineering also completed the following ancillary works:

  • Removal of existing stairs and handrailing on both aeration tanks to replace with triple height to 1200mm hand railing and new stairs so as to adhere to H&S regulations
  • Supply and M&E installation of 2 no. step screens. Manufacture and installation of horizontal screw conveyor to complete screening system at inlet works
  • Refurbishment of Jones Atwood 900 series grit removal system to put back into operation
  • Refurbishment of Salsnes Filter to put back into operation including M&E installation of corresponding pump and air blower

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