No choice in ballast water treatment is more secure

Alfa Laval has served the marine industry for a century, and has been involved in ballast water treatment since it was first proposed. Alfa Laval PureBallast 3.1 is a dependable choice not only in its own right, but also in terms of the global organization behind it.

The leading supplier and system

Having pioneered the application, Alfa Laval and PureBallast are the most established choices in ballast water treatment.

A history of leadership

Alfa Laval has been involved with ballast water treatment for more than a decade. Besides developing treatment technology, we have provided biological and technical competence on key panels whose role is to develop standards and educate the market.

PureBallast, which was developed in cooperation with Wallenius Water, is a mature system that has long been at the forefront of ballast water treatment. The original system, launched in 2006, was the very first commercially available treatment solution.

Widely sold and widely trusted

More than 1250 PureBallast systems have been sold to date, hundreds of which have already been delivered and commissioned. Hundreds of PureBallast systems have been installed as retrofits, and installations have been performed worldwide at a diverse range of shipyards.

Just as importantly, PureBallast been chosen for a diversity of vessel types: container ships, tankers, bulk carriers, offshore supply vessels, naval vessels and more.

Orders received

Alfa Laval has received PureBallast orders for a wide range of vessel types, which have come from ship owners doing business all over the world.

Vessel types served

  • Anchor handling tugs
  • Bulk carriers
  • Car carriers
  • Coastal ferries
  • Container feeders
  • Container ships
  • Cruise ships
  • Drill ships
  • General cargo vessels
  • LNG carriers
  • LPG carriers
  • Naval vessels
  • Offshore supply vessels
  • Research vessels
  • River liners
  • RoRo vessels
  • Shuttle tankers
  • Supply vessels
  • Tankers

Geographic order distribution

Complete global support

Alfa Laval is a strong company with a strong dedication to marine customers and their needs – in ballast water treatment and beyond.

A global leader

True marine focus

Alfa Laval is no newcomer to the marine industry, but rather a world-leading supplier with a full century of marine experience. PureBallast 3.1 was specifically developed for the demands of the marine environment, with the needs of marine customers firmly in mind.

Our work in ballast water treatment is part of a larger effort. Alfa Laval is committed to meeting legislative demands with workable, sustainable solutions that go unnoticed on board.

Service around the world

Alfa Laval is present from start to finish. Advice, documentation, design assistance and thorough support during new installations, retrofits and commissioning are a clear part of our offering in ballast water treatment.

So is ongoing access to parts, services and expertise.

Alfa Laval service experts put uptime, optimization and availability in focus. Accessible 24/7, our service organization combines local presence in ports worldwide with a vast base of global experience. Through PureBallast Performance Agreements and other services, our experts extend performance and ensure cost-efficient peace of mind.

Type approvals

PureBallast 3.1 is type approved by both IMO and the U.S. Coast Guard (USCG).


IMO type approval

All generations of PureBallast, current and previous, have IMO type approval. PureBallast 3.1 is explicitly certified for use in all water types: fresh, brackish and marine.

When comparing IMO type approval certificates for different ballast water treatment systems, it is important to note the certification date. Certificates issued before 2014 do not state the system limitations.

USCG type approval

The USCG type approval for PureBallast was issued in December 2016. It allows PureBallast 3.1 to discharge ballast within United States waters and explicitly certifies the system for use in all water types: fresh, brackish and marine. The type approval testing was performed using the CMFDA/FDA (staining) method and the same hardware, power consumption and flow as the IMO-approved version of the system.

Previously, IMO-approved versions of the PureBallast 3.1 system had also been approved by the USCG for use as an Alternate Management System. As of 7 March, 2017, only the versions of the system with USCG type approval can be installed for compliant operation in United States waters.


Class certifications

Both standard and Ex versions of PureBallast have been certified by the major classification societies.

Class type approval certificates

  • American Bureau of Shipping (ABS)
  • Bureau Veritas (BV)
  • Det Norske Veritas (DNV)
  • Germanischer Lloyd (GL)
  • Korean Register of Shipping (KR)
  • Lloyd’s Register (LR)
  • Registro Italiano Navale (RINA)
  • Russian Maritime Register of Shipping (RMRS)