Project Outline

Under this design, build and operate (DBO) contract Murphy delivered a new effluent treatment for the PepsiCo concentrate production facility at Carrigaline in Cork. Our solution treated 200m3 of industrial effluent each day with an average BOD5 concentration of 3,390 mg/l and included facilities for dewatering of solids removed.

Key Challenges

The key challenges on this project entailed designing a process solution which reliably treat an influent with high BOD5 levels and variable pH to a standard where it could be discharged to the municipal network and treatment system without any adverse impact.

Project Delivery & Innovations

The solution delivered by Murphy included:

  • Inlet pumping station.
  • pH correction.
  • Two stage activated sludge plant with BOD5 removal efficiency of 99% (746kg/day).
  • MBR biological reactors.
  • Sludge thickening plant.
  • Sludge dewatering plant.
  • Chemical dosing systems.
  • Final effluent flow balancing.
  • 1 year O&M upon completion

Key Facts 

The solution delivered by Murphy achieved 99% BOD5 removal efficiency.