Compact Marine Sewage Treatment Plant | IMO-Compliant Wastewater Solution
Advanced Biological Sewage Treatment for Ships & Offshore Vessels
Our simplified compact marine sewage treatment plant series provides efficient, space-saving wastewater processing for vessels of all sizes. These IMO-certified systems effectively treat black water (toilet waste) and gray water (galley/sink drainage) to meet strict MARPOL Annex IV requirements, protecting marine environments while ensuring regulatory compliance.
Key Features & Benefits
✔ Compact & Modular Design – Multiple capacity options (15-40 persons)
✔ Advanced 4-Stage Treatment – Biological oxidation + electro-flocculation + MBR filtration + UV disinfection
✔ Chemical-Free Operation – UV sterilization eliminates pathogens without chlorine
✔ Automated Control System – Minimal crew intervention required
✔ IMO/MARPOL Certified – Compliant with MEPC 227(64) & MEPC 284(71)
✔ Global Approvals – Available with ABS, BV, DNV, LR, NK, RINA certifications
Technical Specifications
System Capacities
| Model | Capacity (Persons) | Avg. Load (L/day) | Organic Load (kg BOD5/day) |
|---|---|---|---|
| SWCM(I)-15 | 15 | 1,190 | 0.595 |
| SWCM(I)-20 | 20 | 1,540 | 0.770 |
| SWCM(I)-25 | 25 | 1,890 | 0.945 |
| SWCM(I)-30 | 30 | 2,310 | 1.155 |
| SWCM(I)-40 | 40 | 3,080 | 1.540 |
Effluent Quality
✅ BOD5 ≤ 25 mg/L
✅ COD ≤ 125 mg/L
✅ TSS ≤ 35 mg/L
✅ Coliforms ≤ 100/100mL
✅ pH 6-8.5 | Residual Chlorine ≤ 0.5 mg/L
Core System Components
1. Biological Treatment System
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Aeration Tank: Oxygenates wastewater to promote aerobic digestion
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Contact Oxidation Tank: Biofilm media enhances organic breakdown
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Electro-Flocculation Reactor: Removes phosphorus & improves settling
2. Membrane Filtration
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MBR Membrane Module: 0.1μm filtration ensures crystal-clear effluent
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Vacuum Pump: Creates permeate flow through membranes
3. Disinfection System
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UV Sterilizer: 254nm wavelength destroys 99.9% of pathogens
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Chemical Dosing Option: Backup disinfection available
4. Control & Monitoring
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Automated Control Panel: Manages all treatment processes
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Alarm Systems: High-level, low-pressure, and fault alerts
The description/sizes may be different with goods, please check with us when order.
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