Vacuum Collection System

The vacuum collection system from Wärtsilä Water & Waste uses differential air pressure to transport sewage from the toilet bowls, and other sanitary fittings, to the Sewage Treatment Plant (STP) or independent collection tank.

Ejectors can be mounted direct to the STP for modular construction without the need for a separate collection tank, and only a small amount of flush water is needed compared to conventional gravity systems.

    KEY BENEFITS
    • Piping system is smaller & lighter than conventional gravity pipework
    • Design flexibility: system can be run in any orientation, around obstacles. 
    • Lower material and installation labor costs
    • Performance unaffected by ship's motion
    • Operational saving costs due to the minimized amounts of flush water needed: 1.5 litres/flush compared to 15 litres/flush with a gravity system.  
    • Suction effect increases hygiene & reduces odour

    FEATURES

    • Ejectors can be mounted direct to the STP for modular construction without the need for a separate collection tank
    • Only a small amount of flush water is needed compared to conventional gravity systems
    • Vertical Lift capability
    • Smaller diameter piping, independent of slope
    • Reduced peak loadings allow use of smaller sewage treatment plant than for gravity systems
    • Ejector performance optimised using Computational Fluid Dynamics (CFD)

    OPTIONS

    • Grey water vacuum collection to separate grey water collection tank(s)
    • Retrofit to existing tanks
    • Foam suppressant
    • PLC interface with data logger
    • Overboard discharge from vacuum circulation pump
    • Controlled feed/transfer equipment

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    Contact us

    Please fill in the form, we aim to respond within 1-2 business days depending on the enquiry. For an existing installation, provide all necessary details to identify the installation and the equipment. Fields indicated with an asterisk (*) are required. 

    For spare parts, please e-mail us with the Equipment Serial Number or the name of the vessel at pse@wartsila.com. For urgent support, contact +44 1202 662 693.

    For technical support & service, please email us with the Equipment Serial Number or the name of the vessel at poole.service@wartsila.com. For urgent support, contact +44 1202 662 616.

    Equipment Serial Number is taken from the equipment nameplate and includes all letters and numbers as given on the equipment nameplate.

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