Mercer International was founded with a simple belief: oil-water separation only matters when it works in the field — not just on paper. Since the mid 1980’s, we’ve dedicated ourselves to designing separators that operators can trust, engineers can specify with confidence, and facilities can rely on for decades.
What began as a small team solving chronic treatment failures has grown into one of the world’s most respected enhanced-gravity separator manufacturers. Our systems earn their reputation the same way they always have:
Measured performance. Low maintenance. Long service life. Repeat customers.
From refineries and chemical plants to utilities, transportation hubs, and manufacturing operations, Mercer has supported some of the most demanding industrial wastewater applications. Along the way, we developed innovations now standard in the industry:
Every advancement came from real customer challenges — not theory. That mindset continues to drive how we engineer, test, and support every system we build.
Mercer doesn’t believe in “good enough.” Wastewater isn’t predictable, flows aren’t steady, and operators don’t have time to fight with equipment. Our job is to:
We take a long view. A separator is a 20–40 year asset. It should perform like one.
Mercer supports clients across all major industrial and infrastructure sectors:
Our customer base is one of our strongest proofs of performance — global brands and critical infrastructure operators who continue to choose Mercer year after year.
Our designs are built on physics, validated with data, and refined through thousands of field hours.
Mercer systems routinely outperform and outlast API/CPI units, plastic block media, tube packs, and disposable coalescers.
No hidden replenishment costs. No disposable bundles. No inaccessible cavities. All plate packs are cleanable, adjustable, ,removable and durable.
We will never propose a system that won’t materially improve your performance.
If testing shows Mercer will not deliver meaningful improvement, we will tell you before you commit.
Request a Free Site Audit & Performance Review.
If testing shows Mercer’s solution will not deliver meaningful improvement, we’ll tell you before you commit to anything.
Free testing and evaluation are included.
Oil & Gas, refining, utilities, chemical processing, rail, manufacturing, mining, environmental engineering firms, municipalities, and military facilities.
Advanced coalescer geometry, optimized flow control, chimney zone segregation, removable plates, and designs proven to work in real-world conditions — not just lab tests.
Yes. Mercer coalescers, internals, baffles, and flow-management upgrades can dramatically improve the performance of existing tanks.
Many units have been in continuous operation for decades. Our designs are engineered for 20–40+ year service life with routine maintenance.
Absolutely. Mercer provides start-up assistance, operator training, troubleshooting, and long-term performance support.
