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Plant Upgrades, Retrofits & Revamps

Extend plant life, increase capacity, reduce operating overheads, and meet evolving regulatory requirements without the capital expense of greenfield construction. Our retrofit expertise spans mechanical, process, electrical, and digital upgrades.

Upgrade & Retrofit Services

Six core retrofit disciplines for existing water treatment assets

Condition Assessment

Performance benchmarking against original design, bottleneck identification, and remaining useful life estimation for critical equipment and infrastructure.

  • Hydraulic & organic load audits
  • Equipment condition surveys
  • Energy consumption baseline
  • Regulatory gap analysis
  • Digital readiness assessment

Capacity Debottlenecking

Scale up existing infrastructure to handle increased flows and loads without major civil works. Modular upgrades and process intensification.

  • Parallel train additions
  • Equipment upsizing & replacement
  • Modular skid integration
  • Hydraulic profile optimisation
  • Peak flow management

Regulatory Compliance Upgrades

Bring aging facilities into compliance with new discharge limits, nutrient regulations, and emerging contaminant standards.

  • Nutrient removal upgrades (TN/TP)
  • Micropollutant & PFAS treatment
  • Disinfection enhancements
  • Odour & VOC control additions
  • Emerging contaminant monitoring

Energy Optimisation

Reduce operating requirements with targeted energy, chemical, and process efficiency improvements for mature treatment plants.

  • VFD retrofits on blowers & pumps
  • DO-based aeration control
  • Biogas recovery & CHP integration
  • Chemical dosing optimisation
  • Heat recovery from effluent

Digital & SCADA Modernisation

Modernise control systems, instrumentation, and SCADA to improve reliability, reduce staffing needs, and enable predictive maintenance.

  • PLC & HMI retrofits
  • Online analyser integration
  • Remote monitoring & diagnostics
  • Predictive maintenance algorithms
  • IoT sensor networks

Mechanical Refurbishment

Rebuild and extend the life of critical rotating and pressure equipment without full replacement.

  • Screw press rebuilds & relining
  • DAF saturator reconditioning
  • Pump & mixer overhauls
  • Instrument recalibration & replacement
  • Pipework repair & replacement

Four Core Upgrade Paths

Focused retrofit programmes targeting the most common drivers for plant enhancement

Automation Integration

Integrate modern PLC, SCADA, and IoT systems into legacy infrastructure. Reduce manual intervention, improve reliability, and enable remote monitoring.

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Capacity Expansion

Increase treatment capacity by 20-150% without greenfield construction. Parallel trains, equipment upsizing, and process intensification.

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Compliance Retrofit

Meet new discharge limits for nutrients, PFAS, and emerging contaminants. Regulatory-gap analysis to compliance sign-off.

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Efficiency Optimisation

Reduce Operating expenditure by 15-40% through energy optimisation, chemical dosing refinement, and process control improvements.

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Retrofit Engineering Approach

Systematic process for minimising downtime and maximising project benefits

1

Baseline & Gap Analysis

Benchmark current performance against design intent and regulatory requirements. 3D laser scanning captures as-built conditions.

2

Solution Design

Retrofit design with legacy equipment compatibility, duty/standby integration, and minimised plant downtime during cutover.

3

Downtime-Minimised Execution

Parallel installation of pre-fabricated modular skids. Cutover during planned maintenance windows.

4

Commissioning & Validation

Wet testing, performance validation against guarantees, operator training, and documentation handover.

5

Ongoing Optimisation

Continuous monitoring, chemical dosing refinement, and periodic performance audits to sustain project benefits.

Typical Project Timeline: Assessment (2-4 weeks) → Design (4-8 weeks) → Fabrication (8-16 weeks) → Installation (2-6 weeks) → Commissioning (1-2 weeks). Phased execution available for operational continuity.

Benefits of Retrofit Over Replacement

Strategic upgrades deliver better project benefits than greenfield construction for most existing assets

Lower Capital Cost

Retrofits typically cost 30-60% less than greenfield construction by leveraging existing civil infrastructure.

Shorter Timeline

Phased upgrades can be completed in weeks rather than the months required for new plant construction.

Reduced Risk

Proven equipment installed in a known environment with predictable integration challenges.

Operational Continuity

Maintain treatment capacity throughout the upgrade with parallel installation and phased cutover.

Sustainability

Extend asset life, reduce embodied carbon from new construction, and improve energy efficiency.

Future-Proofing

Digital upgrades enable predictive maintenance, remote monitoring, and data-driven optimisation.

Bespoke Storage & Process Tanks

Custom-engineered tanks for water, wastewater, chemicals, and process fluids. Designed to integrate seamlessly with your upgraded plant infrastructure.

Storage Tanks

Industrial storage tanks for chemicals, process water, wastewater, and sludge. Available in carbon steel, stainless steel, and duplex construction with custom linings and fittings.

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Process Tanks

Process vessels including reaction tanks, mixing tanks, neutralisation tanks, equalization tanks, and buffer tanks. Engineered for your specific process requirements.

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Bespoke Fabrication

Custom tank design and fabrication for unique applications. From concept to installation, we deliver tanks that fit your exact dimensional, material, and process specifications.

Bespoke Tank Design

Containerised Storage

Transportable storage solutions housed in standard shipping containers. Rapidly deployable, secure, and ideal for remote sites or temporary capacity needs.

Containerised Options

Assess Your Upgrade Potential

Our engineers can benchmark your existing plant, identify bottlenecks, and develop a phased upgrade roadmap that fits your budget and minimises downtime.

Industries We Serve

Our expertise spans multiple industries with sector-specific water treatment solutions.