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Oily Water Separator Suppliers
Onboard machinery spaces generate a constant mix of water, oil, and sludge - and all of it ends up in the bilge. Before any of that water can be discharged, it must be treated to remove oil content down to the regulated limit. That’s the job of a marine oily water separator.
These systems are standard equipment on commercial vessels of all sizes. The oily water separator system ensures your vessel stays within the limits set by MARPOL - less than 15 ppm of oil in water. Most setups today rely on multi-stage treatment: coalescing filters, absorbent media, and oil content monitors working together to manage everything from free oil to emulsified traces.
Choosing the right oily water separator suppliers depends on your vessel type, available space, and how your bilge water system is set up. From compact modular units for small workboats to high-capacity systems on tankers and cruise ships, suppliers offer a wide range of certified, IMO-compliant solutions built to run reliably in tough conditions.
Key Features and Configurations
Modern bilge water treatment systems are typically built around a multi-stage process. Most units start with gravity separation and coalescing filters, followed by secondary filtration media or absorbent cartridges that help remove finer oil droplets. The final stage is always the oil content monitor, which ensures that discharge remains within the legal 15 ppm limit.
While the basic function is consistent, system layouts vary widely. Some separators are standalone units with integrated pumps and valves, while others are modular systems designed to work alongside existing bilge management setups. Advanced models offer backflush cycles, automatic start/stop functions, and remote alarm integration for easier crew operation.
When selecting a shipboard oily water separator, engineers typically look at:
- Flow rate capacity
- Type of filtration used (coalescers, media, resin-based, etc.)
- Size and layout compatibility with the engine room
- Maintenance cycle and filter replacement intervals
- Compliance with IMO MEPC.107(49)
- Availability of spares and technical support
Leading oily water separator equipment manufacturers like Alfa Laval, Jowa, and Marinfloc offer a wide range of systems tailored for different vessel types. From compact models for coastal operations to advanced solutions for large tankers and offshore platforms, these brands are known for combining efficiency with long-term reliability. The best setups balance efficiency, reliability, and ease of use - especially under variable bilge water conditions.
Find Verified Oily Water Separator Suppliers on Records Marine
Finding the right OWS suppliers can make all the difference in long-term performance and compliance. Whether you're sourcing for a newbuild, replacing an outdated system, or standardizing across your fleet, working with experienced vendors helps ensure you're getting the right capacity, certification, and onboard fit.
On Records Marine, shipowners and superintendents can search and compare trusted distributors of certified marine oily water separator systems. Every listing on our platform goes through a vetting process that checks for product approvals, technical capability, and industry experience.
Explore our vetted supplier listings, compare ratings and reviews from real industry users, and connect with companies that understand the demands of shipboard oily water treatment - and deliver systems built to meet them.
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