Marine Oily Bilgewater Separators
Product Description
Marine Oily Bilgewater Separators
Product Introduction:
Our Marine Oily Bilgewater Separator is a high-performance treatment system engineered to remove free and emulsified oils from vessel bilgewater, ensuring discharged effluent consistently meets the strictest international environmental regulations. Designed for a wide range of vessels—from ocean-going cargo ships and tankers to offshore platforms and naval crafts—this unit provides a compact, low-maintenance answer to onboard oily water management.
Core Technology & Working Principle：
The system operates on a multi-stage separation process that combines gravity settling, enhanced coalescence, and advanced filtration media. Oily bilgewater first enters the primary separation chamber, where large oil droplets rise to the surface due to density differences and are automatically skimmed off. The remaining finer oil-in-water emulsion then passes through a patented coalescing pack, which forces microscopic oil droplets to merge into larger, buoyant particles for rapid separation. Finally, a polishing filtration stage ensures the residual oil content is reduced to below 15 parts per million (ppm)—the mandatory discharge limit set by MARPOL Annex I.
Approval Standard:
1. Regulation 14, Revised Annex I of MARPOL 73/78.
2. IMO Resolution MEPC.107(49) Revised Guidelines and Specifications for Pollution Prevention Equipment for Machinery Space Bilges of Ships.
Selection Guide for Bilge Water Separator:
| Model | Capacity (m³/h) | Maximum Vessel Gross Tonnage (GT) |
| DY-0.1 | 0.1 | 400 |
| DY-0.25 | 0.25 | 550 |
| DY-0.5 | 0.5 | 2500 |
| DY-1.0 | 1.0 | 15000 |
| DY-2.0 | 2.0 | 40000 |
| DY-3.0 | 3.0 | 50000 |
| DY-5.0 | 5.0 | Unlimited |
| Remarks: When selecting a bilge water separator, choosing a unit with a capacity exceeding the statutory minimum is strongly advisable. 1. 0.00044G m³/h (G: vessel gross tonnage) — for vessels below 1,000 GT. 2. 0.4 + 0.00004G m³/h — for vessels between 1,000 and 40,000 GT. 3. For vessels between 40,000 and 50,000 GT, select 3.0 m³/h. 4. For vessels above 50,000 GT, select 5.0 m³/h. | ||
Technical Specifications:
| Model | Capacity (m³/h) | Pressure | Matching Pump | Electric Heater | Bilge Water Alarm Device | Control Mode | Oil Discharge Method | ||
| Normal (MPa) | Design (MPa) | Model | Power (kW) | Power (kW) | Configuration | Configuration | Configuration | ||
| DY-0.1 | 0.1 | 0.03 | 0.3 | DZ-100 | 0.12 | Optional | XOC-01 | Auto/Manual | Auto/Manual |
| DY-0.25 | 0.25 | 0.03 | 0.3 | DZ-250 | 0.18 | Optional | XOC-01 | Auto/Manual | Auto/Manual |
| DY-0.5 | 0.5 | 0.03 | 0.3 | DZ-500 | 0.25 | Optional | XOC-01 | Auto/Manual | Auto/Manual |
| DY-1.0 | 1.0 | 0.07 | 0.3 | DZ-1000 | 0.37 | 1.0 | XOC-01 | Auto/Manual | Auto/Manual |
| DY-2.0 | 2.0 | 0.07 | 0.3 | DZ-2000 | 0.75 | 2.0 | XOC-01 | Auto/Manual | Auto/Manual |
| DY-3.0 | 3.0 | 0.07 | 0.3 | DZ-3000 | 1.1 | 2.0 | XOC-01 | Auto/Manual | Auto/Manual |
| DY-5.0 | 5.0 | 0.07 | 0.3 | DZ-5000 | 1.5 | 3.0 | XOC-01 | Auto/Manual | Auto/Manual |
System Schematic Diagram:
Physical Photo:
Reference Size:
| Model | Overall Dimensions & Installation Dimensions (mm) | Weight | ||||
| H | A | B | C | D | kg | |
| DY-0.1 | 1100 | 570 | 610 | 480 | 470 | 120 |
| DY-0.25 | 1170 | 760 | 740 | 450 | 660 | 160 |
| DY-0.5 | 1370 | 760 | 720 | 450 | 660 | 185 |
| DY-1.0 | 1480 | 1080 | 850 | 1000 | 450 | 380 |
| DY-2.0 | 1530 | 1180 | 880 | 1000 | 450 | 450 |
| DY-3.0 | 1950 | 1570 | 1100 | 1400 | 1100 | 820 |
| DY-5.0 | 1950 | 1570 | 1130 | 1400 | 1100 | 950 |
Key Features：
1.IMO MEPC.107(49) Certified – Fully approved to meet and exceed the 15ppm oil-in-water discharge standard, with a built-in 15ppm alarm and automatic shutdown mechanism to prevent non-compliant overboard discharges.
2.Robust Gravity & Coalescing Design – No moving parts in the primary separation zone, minimizing wear and prolonging service intervals. High-efficiency coalescer cartridges provide superior oil-removal performance even under challenging pitching and rolling sea conditions.
3.Integrated Automatic Control System – Equipped with a PLC-based control panel offering real-time monitoring of oil content, flow rate, and system status. The touchscreen interface enables easy operation, fault diagnosis, and data logging for on-board record-keeping.
4.Self-Cleaning & Minimal Maintenance – An optional back-flushing function reduces manual cleaning frequency. Consumable filter elements are quick-release designed for swift replacement during port calls.
5.Compact Footprint & Flexible Installation – Space-saving modular construction allows for horizontal or vertical mounting, making it suitable for retrofitting in engine rooms with limited space.
6.Anti-Corrosion Construction – All wetted parts are manufactured from marine-grade stainless steel and coated mild steel, ensuring long-term durability in the harsh saline environment.