BWPX Series (Sludge Separator)
The BWPX series is Alfa Laval's dedicated bilge/sludge separator, which in combination with an Oily Water Separator (OWS) enables MARPOL Annex I compliant treatment of bilge water and oil sludges. Installed on many medium-sized and large vessels as part of the bilge water treatment system. Technically a MAPX derivative with disc stack configuration optimized for sludge treatment.
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
Bowl overhaul every 3,000-5,000 hrs depending on sludge quality. Pre-settling/pre-filtering strongly recommended. Daily sludge tank management.
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