PureBallast Series
Alfa Laval PureBallast is one of the best-selling ballast water treatment systems worldwide and uses UV irradiation combined with automatic filtration to comply with the IMO D-2 Ballast Water Convention (effective September 2017). The current generation 3.1 has been certified for USCG Type Approval. Available as newbuild and retrofit solution. Estimated market share 20–25% globally. Not a separator in the classical sense, but installed as a water treatment system in the same department (Engine Room) and maintained.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Paring disc, top disc, mud ports check for dull spots/wash-out; erosion depth >0.2 mm (bowl/cap) or >0.5 mm (other) = replacement.
Leaks at cover/bolted joints/mud outlet; gasket rings (EPDM) change every 6000–8000 h, original parts only.
Check vibration/noise; bearings change in pairs every 12000–16000 h, lubricate correctly; do not increase throughput during vibration.
Belts every 3000 h (tension per manufacturer), cracks/wear; coupling check for axial play (>0.5 mm = fault), corrosion.
Monitor current consumption nominal/actual; clean bowl during shutdown; check pre-filtration + lubrication; limit sludge volume.
Type-general inspection and maintenance points for this equipment category — not model-specific.
Service & Maintenance
UV lamp replacement every 8,000 hrs or annual. Filter backwash system check monthly. UV transmittance test before each ballast operation. IMO D-2 compliance testing at flag state survey.
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