Oily Water Separator
critical
Known Models (14)
Alfa Laval (Sweden) PureBilge Series
0.5-5.0 m³/h
· Bilge Water / Oily Water
type: Centrifugal + Coalescer OWS with 15 ppm Oil Content Monitor
size_range: ['PureBilge 0.5', 'PureBilge 1.0', 'PureBilge 2.5', 'PureBilge 5.0']
flow_range_m3h: [0.5, 5.0]
power_range_kw: [2, 8]
variant_count_approx: 4
period_start_year: 2005
period_end_year: None
drive_type: Electric
construction: Centrifugal separator + coalescer + 15 ppm OCM, skid-mounted
successor_series: None
Common Failures:
- • Oil Content Monitor (OCM) calibration drift causing false alarms or non-compliance
- • Coalescer element clogging from emulsified oil/detergent contamination
- • Centrifugal separator bowl vibration from sludge accumulation
- • 3-way valve actuator failure causing illegal overboard discharge
Service: OCM calibration check monthly (MEPC.107(49) requirement). Coalescer element replacement every 2,000-4,000 hrs depending on bilge quality. Separator bowl overhaul per Alfa Laval schedule. MARPOL Oil Record Book entries for every operation.
Spares: Alfa Laval global network. Coalescer elements: keep 2 onboard. OCM spare lamp/sensor: 1 set. Lead time: 2-4 weeks.
Alfa Laval (Sweden) MAPX 207/309 (Bilge Separator)
0.5-5.0 m³/h
· Bilge Water / Oily Water
type: Disc-Stack Centrifugal Separator (Bilge Duty)
size_range: ['MAPX 207', 'MAPX 309']
flow_range_m3h: [0.5, 5.0]
power_range_kw: [5.5, 15]
variant_count_approx: 2
period_start_year: 1980
period_end_year: 2010
drive_type: Electric
construction: Disc-stack centrifuge, same platform as fuel/lube oil separator
successor_series: PureBilge Series
Common Failures:
- • Bowl vibration from heavy bilge contamination (rags, debris)
- • Gravity disc erosion from emulsified oil
- • Operating water system clogging
- • OCM sensor fouling
Service: Bowl overhaul every 3,000-5,000 hrs. Pre-filtering of bilge water strongly recommended. Discontinued — replaced by PureBilge.
Spares: Alfa Laval legacy stock. Declining availability. Lead time: 4-8 weeks. Recommend upgrade to PureBilge.
Compass Water Solutions (formerly Oil Pollution Control) (USA) Marine OWS Series
0.25-5.0 m³/h
· Bilge Water / Oily Water
type: Gravity + Coalescer + Absorption OWS
size_range: ['CWS-250', 'CWS-500', 'CWS-1000', 'CWS-2500']
flow_range_m3h: [0.25, 5.0]
power_range_kw: [1, 4]
variant_count_approx: 4
period_start_year: 2005
period_end_year: None
drive_type: Electric
construction: Multi-stage: gravity + coalescer + absorption polisher
successor_series: None
Common Failures:
- • Absorption polisher exhaustion — replacement required
- • OCM calibration issues
- • Pump cavitation from debris
Service: Absorption polisher media replacement per running hours. OCM calibration monthly. Multi-stage system requires careful monitoring of each stage.
Spares: Compass Water Solutions (Houston, TX). Lead time: 2-4 weeks. Absorption media: consumable, keep stock onboard.
DVZ-Services (Netherlands) IMO-CLEAN Series
0.5-5.0 m³/h
· Bilge Water / Oily Water
type: Gravity + Coalescer OWS
size_range: ['IC-05', 'IC-10', 'IC-25', 'IC-50']
flow_range_m3h: [0.5, 5.0]
power_range_kw: [1, 4]
variant_count_approx: 4
period_start_year: 2000
period_end_year: None
drive_type: Electric
construction: Gravity + coalescer plates, compact
successor_series: None
Common Failures:
- • Coalescer plate fouling from detergent contamination
- • OCM calibration drift
- • Discharge valve actuator failure
Service: Coalescer plate cleaning/replacement per schedule. OCM calibration monthly. Standard OWS maintenance.
Spares: DVZ-Services (Rotterdam, Netherlands). Lead time: 2-4 weeks.
Deckma Hamburg (Germany) OMD Series (Oil Monitor/Detector)
0-50 ppm measurement range
· Treated Bilge Water Effluent
Voltage: 24V DC / 230V AC
type: Oil Content Monitor (IMO MEPC.107(49))
size_range: ['OMD-24', 'OMD-24ex']
flow_range_m3h: None
power_range_kw: [0.05, 0.1]
variant_count_approx: 2
period_start_year: 2000
period_end_year: None
drive_type: Electric
construction: IR absorption oil-in-water measurement
successor_series: None
Common Failures:
- • IR window fouling from oil buildup
- • Calibration drift
- • Sample pump failure
- • Electronics sensitivity to humidity
Service: Window cleaning weekly. Calibration monthly. Zero-water test weekly. Annual service by Deckma-authorized technician.
Spares: Deckma Hamburg. Lead time: 2-3 weeks. Keep onboard: cleaning kit, spare window.
Detegasa (Spain) OWS Marine Series
0.25-5.0 m³/h
· Bilge Water / Oily Water
type: Gravity + Coalescer + Ultra-Filtration OWS
size_range: ['DWF-250', 'DWF-500', 'DWF-1000', 'DWF-2500']
flow_range_m3h: [0.25, 5.0]
power_range_kw: [2, 6]
variant_count_approx: 4
period_start_year: 1990
period_end_year: None
drive_type: Electric
construction: Multi-stage: gravity + coalescer + membrane filtration
successor_series: None
Common Failures:
- • Membrane fouling requiring chemical cleaning or replacement
- • High-pressure pump failure on membrane stage
- • OCM calibration drift
Service: Membrane cleaning per manufacturer schedule. High-pressure pump maintenance quarterly. OCM calibration monthly.
Spares: Detegasa (Vigo, Spain). Membrane modules: 4-6 weeks. Lead time: 3-6 weeks for standard parts.
Facet International / Parker Hannifin (USA) CLS Series (Coalescer/Separator)
0.5-10 m³/h
· Bilge Water / Oily Water
type: Coalescing + Gravity Separation
size_range: ['CLS-25', 'CLS-50', 'CLS-100', 'CLS-200']
flow_range_m3h: [0.5, 10.0]
power_range_kw: [1, 5]
variant_count_approx: 4
period_start_year: 1985
period_end_year: None
drive_type: Electric (pump only)
construction: Coalescing cartridges + gravity separation tank
successor_series: None
Common Failures:
- • Coalescing cartridge plugging from heavy contamination
- • Separation efficiency drop with emulsified oils
- • OCM sensor drift
Service: Coalescing cartridge replacement per differential pressure indicator. OCM calibration monthly.
Spares: Parker Hannifin filtration division. Coalescing cartridges: keep 2 sets onboard. Lead time: 2-4 weeks.
Jowa (Sweden) OWS / OCM Series
0.5-5.0 m³/h
· Bilge Water / Oily Water
type: Gravity + Coalescer OWS with integrated OCM
size_range: ['Jowa OWS 0.5', 'Jowa OWS 1.0', 'Jowa OWS 2.5', 'Jowa OWS 5.0']
flow_range_m3h: [0.5, 5.0]
power_range_kw: [1, 5]
variant_count_approx: 4
period_start_year: 1995
period_end_year: None
drive_type: Electric
construction: Gravity separation + coalescer + OCM
successor_series: None
Common Failures:
- • OCM window fouling causing false readings
- • Coalescer element degradation
- • Bilge pump air lock from empty bilge well
- • Solenoid valve failure on 3-way valve
Service: OCM window cleaning weekly. Coalescer replacement per running hours. OCM calibration monthly. MARPOL compliance documentation.
Spares: Jowa (Gothenburg, Sweden, part of Atlas Copco group since 2022). Lead time: 2-4 weeks.
Marinfloc (Sweden) MF Series
0.5-5.0 m³/h
· Bilge Water / Oily Water
type: Chemical Flocculation + Flotation OWS
size_range: ['MF 0.5', 'MF 1.0', 'MF 2.5', 'MF 5.0']
flow_range_m3h: [0.5, 5.0]
power_range_kw: [2, 6]
variant_count_approx: 4
period_start_year: 2000
period_end_year: None
drive_type: Electric
construction: Chemical dosing + flotation tank + 15 ppm OCM
successor_series: None
Common Failures:
- • Chemical dosing pump failure or misdosing
- • Flocculation chemical supply exhaustion — requires regular replenishment
- • Flotation tank foam overflow
- • OCM calibration drift
Service: Chemical supply level check weekly. Dosing pump calibration monthly. OCM calibration monthly. Sludge removal from flotation tank regularly.
Spares: Marinfloc (Gothenburg, Sweden). Chemicals must be ordered regularly. Lead time: 2-4 weeks for parts, 1-2 weeks for chemicals in major ports.
RWO / Veolia (Germany/France) SKIT/S Series
0.25-5.0 m³/h
· Bilge Water / Oily Water
type: Gravity + Coalescer OWS with 15 ppm OCM
size_range: ['SKIT/S 0.25', 'SKIT/S 0.50', 'SKIT/S 1.0', 'SKIT/S 2.5', 'SKIT/S 5.0']
flow_range_m3h: [0.25, 5.0]
power_range_kw: [1, 5]
variant_count_approx: 5
period_start_year: 1990
period_end_year: None
drive_type: Electric (pump + OCM only)
construction: Gravity separation + coalescer plates + 15 ppm OCM, modular
successor_series: None
Common Failures:
- • Coalescer plate fouling from detergent-contaminated bilge water
- • OCM sensor drift — regular calibration mandatory
- • Bilge pump cavitation from debris blockage
- • 3-way recirculation valve failure
Service: Coalescer plate cleaning/replacement every 1,000-3,000 hrs. OCM calibration monthly. Pre-settling of bilge water recommended. MARPOL Oil Record Book entries mandatory.
Spares: RWO/Veolia (Bremen, Germany). Coalescer plates: keep 1 set onboard. OCM parts: 2-4 weeks. Lead time: 2-4 weeks.
Rivertrace (UK) Smart Series OCM + OWS
0-50 ppm OCM / 0.5-5.0 m³/h OWS
· Bilge Water / Oily Water
type: Oil Content Monitor + OWS System
size_range: ['Smart OCM', 'Smart OWS 0.5', 'Smart OWS 1.0', 'Smart OWS 2.5']
flow_range_m3h: [0.5, 5.0]
power_range_kw: [1, 5]
variant_count_approx: 4
period_start_year: 2010
period_end_year: None
drive_type: Electric
construction: Fluorescence-based OCM + gravity/coalescer OWS
successor_series: None
Common Failures:
- • Fluorescence sensor window fouling
- • Calibration drift — requires regular zero-water check
- • Flow cell blockage
Service: Sensor window cleaning weekly. Calibration check monthly. Annual service by Rivertrace-certified engineer.
Spares: Rivertrace (Southampton, UK). Lead time: 2-4 weeks.
SKF / Blohm+Voss (Germany/Sweden) Marine OCM (Oil Content Monitor)
0-50 ppm measurement range
· Treated Bilge Water Effluent
Voltage: 24V DC
type: Oil Content Monitor (IMO MEPC.107(49))
size_range: ['OCM-15', 'OCM-15E']
flow_range_m3h: None
power_range_kw: [0.05, 0.1]
variant_count_approx: 2
period_start_year: 2005
period_end_year: None
drive_type: Electric (24V DC)
construction: Optical/infrared oil-in-water measurement, flow cell
successor_series: None
Common Failures:
- • Optical window fouling from oil film buildup — most common issue
- • Calibration drift requiring monthly recalibration
- • Flow cell blockage from debris
- • Electronics board failure from humidity/vibration
Service: Optical window cleaning weekly. Calibration check monthly. Zero-water reference check weekly. IMO requires annual verification by authorized service engineer.
Spares: Various OCM manufacturers (Jowa, RWO, Rivertrace). Keep onboard: cleaning kit, spare lamp/LED. Lead time: 2-4 weeks.
Victor Marine (UK) VMS Series
0.25-5.0 m³/h
· Bilge Water / Oily Water
type: Gravity + Coalescer OWS with 15 ppm OCM
size_range: ['VMS 0.25', 'VMS 0.50', 'VMS 1.0', 'VMS 2.5', 'VMS 5.0']
flow_range_m3h: [0.25, 5.0]
power_range_kw: [1, 4]
variant_count_approx: 5
period_start_year: 1985
period_end_year: None
drive_type: Electric (pump only)
construction: Gravity + coalescer, compact design
successor_series: None
Common Failures:
- • Coalescer cartridge clogging from detergent contamination
- • OCM sensor fouling
- • Bilge pump suction strainer clogging
- • 3-way valve actuator failure
Service: Coalescer cartridge replacement every 1,000-2,000 hrs. OCM calibration monthly. Pre-filtering recommended.
Spares: Victor Marine (Wigan, UK). Lead time: 2-4 weeks. Coalescer cartridges: keep 2 sets onboard.
Wärtsilä / Hamworthy (Finland/UK) BOSS Series (Bilge Oily-Water Separator System)
0.5-5.0 m³/h
· Bilge Water / Oily Water
type: Gravity + Coalescer OWS
size_range: ['BOSS 0.5', 'BOSS 1.0', 'BOSS 2.5', 'BOSS 5.0']
flow_range_m3h: [0.5, 5.0]
power_range_kw: [1, 5]
variant_count_approx: 4
period_start_year: 1985
period_end_year: None
drive_type: Electric
construction: Gravity + coalescer cartridges, compact
successor_series: None
Common Failures:
- • Coalescer cartridge clogging
- • OCM fouling
- • Pump seal failure
- • 3-way valve actuator issues
Service: Coalescer cartridge replacement per running hours. OCM calibration monthly. Originally Hamworthy — service now through Wärtsilä.
Spares: Wärtsilä service network. Lead time: 2-4 weeks. Coalescer cartridges: keep 2 sets onboard.