
Evac MBR Wastewater Treatment System
The Evac MBR (Membrane Bioreactor) wastewater treatment system — one of the most advanced marine wastewater solutions available today.
Designed for modern vessels operating in environmentally sensitive waters, the Evac MBR system delivers superior effluent quality in a compact, fully automated solution suitable for both newbuild and retrofit projects.
Why the Evac MBR?
The Evac MBR system combines biological treatment with advanced membrane filtration to achieve exceptionally high treatment performance. It is designed to meet and exceed international marine wastewater discharge regulations, including operation in special areas.
Designed for the comprehensive treatment of black (sewage) and grey water, the MBR system delivers high-grade effluent in a single step. While it functions effectively without additional post-treatment, the plant can be configured with an optional nutrient removal module.
Key benefits
- Completely automatic and easy to maintain and control
- High-quality disinfected effluent without the use of chemicals
- Extremely low running costs and minimal energy consumption
- Completely modular and highly customizable system
- IMO MEPC.227(64) compliant
Key Advantages
- Outstanding effluent quality
- Compact footprint for space-restricted engine rooms
- Low sludge production
- Minimal chemical usage
- Fully automated operation
- Designed for marine and offshore environments
Membrane bioreactor technology ensures removal of suspended solids, bacteria, and fine particles — producing discharge water of significantly higher quality than conventional marine treatment systems.
How the System Works
- Black and grey water enter the biological treatment chamber
- Organic matter is broken down through aeration
- Membranes filter out remaining solids and microorganisms
- Treated effluent is safely discharged or reused onboard
This integrated process provides stable, consistent performance even with fluctuating load conditions — ideal for cruise ships, ferries, offshore platforms, and naval vessels.
For technical specifications, project consultation, or a retrofit assessment, contact Marinevac to discuss how the Evac MBR system can support your vessel’s environmental compliance and operational performance.
For technical specifications or a project consultation, contact Marinevac to discuss how the Evac MBR system can support your vessel’s environmental compliance and operational performance.
Applications
- Cruise ships
- Passenger ferries
- Offshore vessels and platforms
- Superyachts
- Naval vessels
- Commercial shipping
Many vessels operating today face increasing environmental compliance requirements. Marinevac specialises in assessing existing wastewater systems and providing tailored retrofit solutions using Evac MBR technology.



