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Gas Plant Water Requirements

Natural gas combined cycle plants require high-purity water for heat recovery steam generators (HRSG) and cooling water

Engineered Performance

Every system is designed for your specific wastewater characteristics, flow profile, and effluent targets. No off-the-shelf assumptions — just validated process engineering.

Proven Reliability

Equipment selected from manufacturers with proven field performance in similar applications. Duty/standby arrangements and robust construction minimise unplanned downtime.

Environmental Compliance

Design targets are set at 50-70% of consent limits, providing a safety margin for process variation. Continuous monitoring and automated reporting demonstrate compliance.

Operator Friendly

Intuitive controls, clear instrumentation, and accessible maintenance points reduce training requirements. Standard operating procedures written in plain language.

Technical Support

Direct access to our process engineers for operational advice, troubleshooting, and optimisation. Remote diagnostics and rapid on-site response keep your plant running.

Quality Assurance

Materials certified to EN 10204 3.1, welding procedures qualified to ISO 9606, and pressure testing to 1.5x design pressure. Full traceability from mill to commissioning.

Treatment Systems

Our gas plant treatment systems include clarification and filtration for cooling water makeup, and high-purity pre-treat

1. Site Assessment

Comprehensive analysis of wastewater volume, quality, temperature, and variability informs process selection and equipment sizing for optimal performance.

2. Process Design

Treatment train selected from screening, DAF, biological, filtration, and disinfection options based on effluent targets, footprint, and Capital expenditure constraints.

3. Equipment Selection

Materials, pumps, blowers, and instruments specified for the specific duty conditions, chemical environment, and operational maintenance capabilities.

4. Automation & Control

PLC-based control with online monitoring automates chemical dosing, aeration, and sludge withdrawal. Remote access provides 24/7 oversight.

5. Commissioning

Site acceptance testing verifies mechanical, electrical, and process performance. Operator training ensures confident day-to-day management.

6. Performance Guarantee

Contractual effluent targets with financial backing demonstrate our confidence. Monthly reporting proves continuous compliance for regulators and stakeholders.

Efficiency Benefits

Proper water treatment maintains heat transfer efficiency in HRSG tubes and cooling systems, maximising plant efficiency

Reduced Operating Requirements

Efficient process design, energy optimisation, and automated chemical dosing cut power and reagent bills by 20-40% compared to conventional plants.

Environmental Compliance

Consistently meets discharge consent limits, avoiding fines, prosecutions, and reputational damage. Monthly compliance reports satisfy regulators.

Water Reuse Potential

High-quality effluent suitable for non-potable applications — cooling tower make-up, washdown, and irrigation — reducing freshwater consumption.

Operational Reliability

Duty/standby equipment, automated controls, and predictive maintenance minimise downtime. 95-98% availability targets with rapid response support.

Future Expansion

Modular design with spare connection points and over-sized aeration capacity allows 30-50% flow increase with minimal additional Capital expenditure.

Sustainability Credentials

Energy-efficient design, biogas recovery, and water reuse support BREEAM, LEED, and corporate ESG targets. Demonstrable carbon footprint reduction.

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Power Generation Water Treatment

Power plants require extensive water treatment for boiler feed, cooling systems, flue gas desulphurisation (FGD), and wastewater discharge. Our solutions address the specific challenges of coal, gas, and renewable power generation including high-purity water for turbines, zero liquid discharge options, and treatment of FGD effluent containing heavy metals and chlorides.

Boiler Feed Water

Demineralisation and reverse osmosis produce high-purity water for steam generation.

Cooling Water

Circulating water treatment controls scaling, corrosion, and biofouling in condensers.

FGD Wastewater

Tertiary treatment removes mercury, selenium, arsenic, and TDS from scrubber blowdown.

Zero Liquid Discharge

Evaporation and crystallisation systems eliminate wastewater discharge from power plants.

Design Parameters

Boiler Feed TDS<0.1 mg/L (supercritical units)
Cooling Water CirculationUp to 300,000 m³/h (large thermal stations)
FGD Wastewater Flow0.5 – 3% of flue gas volume
Heavy Metals<0.05 mg/L Hg, <0.01 mg/L Se
TDS in ZLD BrineUp to 350,000 mg/L
Make-up Water1 – 5% of circulation (evaporative cooling)
Blowdown Recovery80 – 95% recovery via RO and evaporation
MaterialsSuper duplex, titanium, FRP (chloride resistance)

Power Sector Compliance

ELV Directive

Emission Limit Values for large combustion plants drive FGD wastewater treatment requirements.

Industrial Emissions Directive

IED 2010/75/EU BAT requirements for power plant wastewater and cooling water.

Effluent Guidelines

US EPA 40 CFR Part 423 compliance for steam electric power generating wastewater.

Need help with natural gas combined cycle?

Our experts can design a system tailored to your specific requirements.

Industries We Serve

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