Process Engineering

Coffey’s Process Engineering Team designs, validates, and optimises water and wastewater treatment systems for municipal and industrial clients across Ireland and the UK. Our approach combines first-principles design with piloting and data-driven controls to deliver compliant, operator-friendly plants with low whole-life cost.

Core Capabilities

Water Treatment

  • Raw water characterisation and optioneering

  • Coagulation and pH/alkalinity control

  • Flocculation, clarification and filtration

  • UV and chlorination with Ct verification

  • Tertiary polishing and sludge handling

Wastewater Treatment

  • ASP, SBR, IFAS/MBBR, trickling filters

  • Tertiary filtration and UV

  • Nutrient removal strategies

Industrial Applications

  • Process water treatment (RO, NF, UF)

  • High-strength trade effluent treatment

  • Experience across dairy, pharma/biopharma and distilling

Digital by Design

Digital and analytics are embedded in every project. Examples include:

  • Model-based coagulant and acid trim using UV254/DOC

  • THM/DBP prediction from sensor and lab data

  • Inflow forecasting for storm readiness

  • Predictive control of aeration, pumping and backwash

Our toolset includes BioWin, SUMO, CFD and full SCADA/historian integration.

Deliverables

We engage confidently at DQ, IQ, OQ and PQ stages, aligning with client gate reviews. Typical deliverables include:

  • Basis of Design (BoD), PFDs and mass balances

  • P&IDs and hydraulic profiles

  • Control philosophies and FDS

  • Sampling and commissioning plans

  • Performance test protocols

Scale and Results

Our portfolio ranges from small wastewater schemes to 81,000 PE works, and from compact water packages to 300 ML/d treatment plants.

A recent industrial project delivered a 2,000 m³/d high-end water treatment system for a dairy and nutrition client, supported by full validation. Outcomes included:

  • Robust compliance from day one

  • Reduced chemical and energy demand

  • Smooth, safe operation

Process Engineering Projects

All projects