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Proven In The Field
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
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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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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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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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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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.
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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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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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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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.
Partner With MercerField-Tested Engineering
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.
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 SeparatorVirtually all — including oil & gas, petrochemical, utilities, stormwater, transportation, defense, mining, manufacturing, and engineering consulting.
Yes. Every Mercer system is engineered for your flow rate, contaminant type, and installation environment.
Yes. Our designs meet or exceed API 421 and related discharge requirements.
Absolutely — from design to field commissioning, Mercer engineers stay involved.
Yes. Modular configurations allow multi-point treatment or shared infrastructure.
Standard units ship quickly; custom designs vary by project scope. Standard units ship quickly; custom designs vary by project scope.
