Engineered Solutions for Every Industry

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Proven In The Field

We've seen it,and sovled it, ALL.

Trusted by utilities, refineries, manufacturers, and their operations and compliance teams to keep systems running clean, efficient, and regulatory-ready.

For over 40 years, Mercer International has been designing and building oil/water separation systems that work — not just in theory, but in the field. Our separators have proven themselves in refineries, power plants, airports, military bases, and mom and pop auto shops systems worldwide. Each one is engineered for its environment, flow rate, contaminant load, and compliance requirements — because every industry’s challenges are different, but the need for performance is the same.

Where We Thrive

Industries We Serve

Oil & Gas

Upstream

Midstream

Downstream

Oil Sands

Saltwater Disposal Wells

Mercer systems manage the toughest hydrocarbon separation challenges — from produced/ flowback waters to desalter reject and refinery drainage. Built for high throughput, heavy solids, and corrosive conditions, they keep production, transportation, and refining operations compliant and efficient.

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Utilities & Power Generation

Hydroelectric

Combined Cycle

Coal

Nuclear

Renewables

When reliability is non-negotiable, Mercer’s separators deliver. Designed for electrical generation and utility infrastructure, our systems handle high-volume stormwater runoff and oil contamination to protect equipment, maintain environmental compliance, and minimize outages.

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Transportation

Airports

Rail Yards

Vehicle Maintenance

Parking Facilities

In high-traffic environments, oil spills and washdown runoff can quickly become compliance and safety issues. Mercer’s separators are engineered to perform under load — controlling sheen, preventing discharge violations, and keeping transportation facilities safe and operational.

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Stormwater & Municipal Systems

Runoff Management

Remediation Sites

Large Municipal Systems

From urban MS4 infrastructure to large-capacity detention systems, Mercer’s separators help cities and facilities meet NPDES and stormwater discharge standards. Our modular, field-serviceable designs fit easily into constrained sites and integrate seamlessly with existing drainage systems.

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Petrochemical Processing

Chemical Plants

Refineries

Storage Terminals

Cooling Water Systems

Petrochemical operations demand high-efficiency separation under extreme conditions. Mercer’s engineered systems handle heavy hydrocarbon loads typical of chemical and refining facilities. Our designs help plants meet discharge limits, protect process equipment, and reduce maintenance downtime.

Military & Defense

Vehicle Wash Bays

Airbases

Bilge Treatment

Test Facilities

Mercer systems are battle-tested. Corrosion-resistant, rugged, and reliable, they meet stringent performance and environmental requirements for defense installations worldwide. Designed for rapid deployment, easy maintenance, and long-term durability in demanding environments.

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Mining & Natural Resources

Equipment Washdown

Tailings Water

Mine Dewatering

Process Runoff

Mercer’s separators are proven in some of the harshest environments on earth — where sediment, oil, and solids mix under high flow and variable chemistry. Designed for rugged duty, our systems manage hydrocarbon contamination in mining process water and stormwater runoff, helping operators stay compliant and minimize environmental impact.

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General Industry

Manufacturing

Food & Beverage

Steel Mills

Boiler Facilities

Industrial operations demand flexibility and uptime. Mercer delivers custom-engineered separation systems for process wastewater, coolant recovery, and oily effluent pre-treatment — helping plants stay compliant, reduce cleanouts, and extend asset life.

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Engineering & Consulting Partners

Design Support

Specification Development

Retrofit Evaluation

Project Collaboration

Mercer partners with environmental and civil engineering firms to deliver practical, compliant oil-water separation solutions. We provide CAD drawings, design support, and proven field data that help consultants specify correctly, reduce design time, and ensure project performance aligns with both customer and regulatory expectations.

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Field-Tested Engineering

Industry Experience That Translates to Performance

Performance isn’t just about efficiency — it’s about uptime, consistency, and compliance under pressure. Mercer’s cross-sector experience means lessons learned in one environment improve performance in another. From refinery to substation, airport to municipal drain, we bring proven engineering and a field-tested design library to every project.

Design Your Separator — Built Around Your Worst Case.

Send us your toughest wastewater data and we immediately generate a custom spec and drawing based on your real influent characteristics — not assumptions. You’ll have engineered documentation in hand fast, and a formal quotation within hours, not days.

Design My Separator

Frequently Asked Questions

What industries does Mercer serve?

Virtually all — including oil & gas, petrochemical, utilities, stormwater, transportation, defense, mining, manufacturing, and engineering consulting.

Can systems be customized for unique site conditions?

Yes. Every Mercer system is engineered for your flow rate, contaminant type, and installation environment.

Are Mercer systems certified for API, NPDES, or MS4 standards?

Yes. Our designs meet or exceed API 421 and related discharge requirements.

Do you provide installation or engineering support?

Absolutely — from design to field commissioning, Mercer engineers stay involved.

Can one system serve multiple applications on a single site?

Yes. Modular configurations allow multi-point treatment or shared infrastructure.

What’s the typical lead time?

Standard units ship quickly; custom designs vary by project scope. Standard units ship quickly; custom designs vary by project scope.

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