25-Person Marine Sewage Treatment Plant | Compact & IMO-Compliant Black Water System
Efficient Wastewater Treatment for Small Vessels & Offshore Applications
Our SWCM(I)-25 marine sewage treatment plant provides compact, reliable wastewater processing for vessels requiring 25-person capacity (max 27 persons). This marine black water treater combines advanced biological treatment with UV disinfection to deliver IMO MEPC 227(64)/284(71) compliant effluent – perfect for yachts, fishing boats, and small commercial ships.
Key Features & Benefits
✔ Space-Saving Design – Ideal for tight engine rooms and small marine applications
✔ Multi-Stage Treatment – Activated sludge + membrane bioreactor + UV sterilization
✔ Zero Chemical Disinfection – UV system eliminates pathogens without chlorine byproducts
✔ Corrosion-Resistant Build – Epoxy-coated mild steel construction for long service life
✔ Automated Operation – Electric control panel for hassle-free performance
✔ Global Certifications – IACS-approved (ABS, BV, CCS, DNV, LR, NK, KR, RMRS, RINA)
Technical Specifications
Treatment Capacity & Performance
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Rated Capacity: 25 persons | Peak Capacity: 27 persons
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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
Dimensions & Construction
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Material: Sandblasted mild steel with 0.25-0.3mm epoxy tar coating
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Dimensions (L×W×H): 1800 × 1450 × 1750 mm
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Weight: Dry – 1450 kg | Wet – 3826 kg
Core Components
| Component | Specifications |
|---|---|
| Biological Reactor | Aeration + contact oxidation + membrane tank |
| Cutting Pump | 0.5CWF-8 (0.75 kW, 5 m³/h) |
| Air Blower | 2RB 210-7AH16T (0.55 kW, 80 m³/h) |
| Discharge Pump | 25ZB-2-20 (0.75 kW, 2 m³/h) |
| UV Sterilizer | JX-0.5UV (220V, 50Hz) |
| Control Panel | 321DF-1M-01YL (Automated operation) |
Advanced Treatment Process
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Biological Degradation – Activated sludge & biofilm break down organic waste
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Membrane Filtration – MBR technology removes suspended solids (TSS)
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UV Disinfection – Chemical-free sterilization for safe discharge
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Automated Sludge Control – Prevents membrane fouling for low-maintenance operation
Certifications & Compliance
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Fully compliant with:
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IMO MEPC 227(64) & MEPC 284(71)
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MARPOL Annex IV
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Optional IACS Certificates: ABS, BV, CCS, DNV, GL, LR, NK, KR, RMRS, RINA
The description/sizes may be different with goods, please check with us when order.
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