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Sewage Treatment System Suppliers

Modern vessels are required to manage their wastewater responsibly, both for regulatory compliance and environmental protection. Marine sewage treatment systems make this possible by processing black water from toilets and grey water from sinks and showers right on board. These systems treat waste to meet international standards so it can be safely discharged without violating regulations.

Working with experienced sewage treatment systems suppliers makes a real difference. From compact plants for smaller vessels to high-capacity units for commercial fleets, top STP suppliers offer solutions tailored to each ship’s tonnage, crew size, and voyage profile. Whether it’s a smaller biological unit or a full-capacity setup, the right partner can provide a system that’s efficient, compliant, and easy for crews to maintain.

Types of Marine Sewage Treatment Systems

Marine sewage treatment plants come in different configurations, each designed to meet the needs of various vessel types and discharge regulations. While the core goal is the same - treating wastewater to MARPOL standards - the methods used can differ. Leading sewage treatment plants manufacturers like Hamworthy, Wärtsilä, HAMANN AG, ACO Marine, and Jowa offer a wide range of models. From container ships to cruise liners, the right treatment setup depends on onboard needs and regulatory demands.

Here are the most common types found onboard:

Biological Treatment Systems - These use aerobic bacteria to break down organic waste. They're common on merchant ships and cruise vessels, offering effective treatment with relatively simple maintenance.
Membrane Bioreactor (MBR) Systems - A more advanced version of biological treatment. These systems filter the treated water through membranes, producing very clean effluent. MBR systems are popular on newer vessels where strict discharge limits apply.
Chemical Disinfection Units - Some systems use chlorine or other chemicals to disinfect wastewater. While less common now, they are still found on older ships or vessels with limited space.
Vacuum Collection + Treatment Units - Used mostly in passenger vessels, vacuum systems help collect sewage efficiently before routing it to the treatment plant. They're often paired with biological systems for full compliance.

The type of system chosen depends on factors like vessel size, voyage duration, available space, and crew number. Experienced sewage treatment systems distributors help owners evaluate these needs and recommend units that meet both technical and regulatory demands without overcomplicating daily operations.

Find the Best Sewage Treatment System Suppliers

With so many regulations and technical specs to consider, sourcing the right marine sewage treatment system can feel overwhelming. That’s why Records Marine makes it easier. Our platform connects shipowners, superintendents, and procurement managers with verified suppliers who meet strict industry standards.

Whether you're looking for compact biological systems or membrane bioreactors, Records Marine helps you filter options by system type, class approval, and specific region. We’ve vetted each vendor to ensure they offer not only certified equipment, but also reliable support and spare availability.

Skip the guesswork and long searches. Start your supplier discovery on Records Marine today and ensure your next sewage treatment system is efficient, compliant, and built for life at sea.