Alfa Laval launches PureBallast 3.0
Alfa Laval’s new PureBallast 3.0 system
Sweden's Alfa Laval is launching its third generation chemical free system for ballast water treatment, PureBallast 3.0, which the company says will help re-establish the company as a groundbreaker in ballast water treatment.
Per Warg, business manager, Alfa Laval, said: “This time we’ve completely rewritten the book when it comes to PureBallast. We’ve achieved space savings of 50%, energy savings of up to 60% and huge improvements in flexibility and flow capacity. But we’ve also learned a great deal that can be of impact for ballast water treatment in general.”
PureBallast, which was developed in cooperation with Sweden's Wallenius Water, was originally launched in 2006 as the world’s very first commercially available ballast water treatment system. That original construction had been decided at a time when no supplier knew what would be needed to pass the IMO tests though, so the company has had plenty of time to perfect the system.
With PureBallast, the treatment process is enhanced by AOT (advanced oxidation technology), which creates free radicals that cause irreversible cell membrane damage. The AOT effect has a proven biological impact leading to better treatment performance and lower energy consumption. With the new model, light sources were introduced into the equation, making it possible to see the UV dose for each of 50,000 theoretical particles (organisms) passing through the reactor.
Alfa Laval says that the PureBallast 3.0 system, while based on the same treatment technology as its predecessors, is a remarkable leap forward in terms of its compactness, energy efficiency, flexibility and ease of installation.
Where previous PureBallast reactors handled 250 m3/h each, individual PureBallast 3.0 reactors can handle either 300 m3/h or 1000 m3/h. Using the larger reactor, which is not much bigger than the original 250 m3/h version, the footprint of a 1000 m3/h system is literally cut in half.
The new system is also as energy efficient as it is compact. Mr Warg added: “The new 1000 m3/h reactors consume just 100 kW at full power, which is a minimum energy savings of 30% over previous versions. And when full power isn’t needed, the energy savings can be as much as 60%.”
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