Wärtsilä Aquarius® EC BWMS

Wärtsilä AQUARIUS® EC Ballast Water Management System (BWMS) provides robust technology for the treatment of ballast water using a simple two stage process involving filtration and electro-chlorination (EC), across the full range of ship operating and environmental conditions.

The system is easy to integrate and maintain, and is type approved according to the IMO Convention and has an Alternative Management System (AMS) acceptance certificate from the USCG.

Wärtsilä works in close cooperation with its customers, our BWMS partnership program covers all stages from fleet evaluation to lifecycle support. Wärtsilä’s tailored turnkey solutions help minimize your environmental footprint, improve operational efficiency and enhance reputation.

    Technology choice
    System Capacity (m3/h) Total Installed power (kW)
    Installed / Nominal
    AQ-250-EC 0 - 250 25.9 / 22.6
    AQ-300-EC 250 - 300 29.4 / 25.2
    AQ-375-EC 300 - 375 34.6 / 28.9
    AQ-430-EC 375 - 430 38.8 / 32.0
    AQ-500-EC 430 - 500 44.5 / 36.4
    AQ-550-EC 500 - 550 50.8 /41.0
    AQ-750-EC 550 - 750 60.6 / 48.2
    AQ-850-EC 750 - 850 71.1 / 55.9
    AQ-1000-EC 850 - 1000 85.8 / 68.3
    AQ-1200-EC 1000 - 1200 110.4 /87.0
    AQ-1500-EC 1200 - 1500 123.0 /96.9
    AQ-2000-EC 1500 - 2000 167.9 / 126.2
    AQ-2400-EC 2000 - 2400 216.1 / 159.5
    AQ-3000-EC 2400 - 3000 264.8 /193.1
    AQ-3300-EC 3000 - 3300 319.7 / 233.2
    AQ-3600-EC  3300 - 3600  365.5 / 264.7 

    Pressure drop
    Normal operation: 0.3 barg
    Backwash set point: 0.8 barg


    Type approved
    BWMS Aquarius EC TA certificate
    AMS accepted
    BWMS Aquarius EC AMS approval
    Ex Certified
    EC-EX-BVS-16-ATEX-E-023-X
    • Condor Ferries
      "This partnership with Wärtsilä has allowed Condor to be ready to fit ballast water treatment without the need to lay up any of our ships, since the preparation work, which requires the ship to be out of service, was completed during planned refit periods. Fitment can then take place in-service when the International Convention for the Control and Management of Ships’ Ballast Water and Sediments is ratified,” says Graham Belgum, Fleet Director for Condor.

      Condor Ferries

    • Anvil Point
      The MV Anvil Point is designed for the transportation of dry cargoes, containers and vehicles. As a non ballast water treatment ready vessel, installation included ballast pipeline penetration. For retrofit applications and upgrades, where space availability can be a determining factor, the modular configuration of Wärtsilä’s AQUARIUS® range was a particular advantage and the Wärtsilä’s experience in piping design guaranteed minimal impact on the vessels existing operating regime.

      Anvil Point

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