INDUSTRY INSIGHT
Petrochemical plants operate under relentless pressure: high-volume wastewater streams, emulsified hydrocarbons, aggressive fouling loads, and tightening environmental scrutiny. Whether it’s ethylene production, polymerization units, aromatics, or specialty chemical blending, one truth remains constant — if primary separation fails, the entire plant feels it.
Mercer International’s enhanced gravity separators provide reliable, API 421-aligned performance engineered for the realities of modern petrochemical operations. We deliver predictable oil and solids removal, reduced operator burden, and cleaner effluent that keeps downstream biological systems, cooling towers, and reuse loops stable.
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Petrochemical wastewater is not just “oily water.” It’s a constantly shifting blend impacted by heat, chemistry, and unit-by-unit variation.
Common challenges include:
Without effective, controlled primary separation, operators face:
Why Mercer
Across complex petrochemical operations, Mercer systems bring stability and predictability to primary treatment — especially where legacy API/CPI systems struggle.
Common applications include:
Wherever wastewater requires controlled flow geometry, predictable droplet capture, and reduced operator intervention — Mercer delivers.
MERCER ADVANTAGE
Petrochemical facilities choose Mercer because our systems address the issues that cripple traditional separators.
Mercer’s Multi-Pack™ coalescer captures oil droplets down to 60 microns, that’s three times smaller than standard API/CPI systems, even under variable flows and temperatures.
Timer-actuated solids purging and automated oil recovery dramatically reduce operator burden and eliminate manual skimming, raking, and tank entry.
While API 421 sets the baseline, Mercer builds to exceed it: controlled geometry, consistent velocity (<3 ft/min), and optimized retention for real-world petrochemical wastewater.
Built-in vapor containment, solids management, and drop-in coalescer access minimize shutdown frequency and protect personnel.
Replace large, concrete API tanks with a predictable, compact steel system that delivers superior effluent and easier maintenance.
Just as we did for the Electrical Utilities section, here are industry hot buttons the client likes seeing:
Because when separation performance drops, the consequences escalate fast.
Mercer systems:
