Sewage Treatment



Triton μ system is a physicochemical sewage treatment plant, specially designed for treatment of both black (sewage) or the mixture of the back and grey water (wastewater from showers, kitchens, sinks, etc), onboard merchant ships, small yachts and cruise vessels. The system is designed to fulfil requirements of IMO MEPC 159(55) of International Maritime Organisation (IMO) which specifies discharged waste water from sewage treatment plants.

The plant operates in a continuous basis, is fully automatic in normal operation and requires low maintenance.

  • Certified Acc to MEPC.159(55)
  • High manufacturing quality; marine type system able to resist wear and tear at marine conditions
  • Low purchasing and installation cost
  • Small volume and footprint suitable for small and narrow spaces
  • Compact unit with simple and automatic operation
  • Safe and flexible operation
  • Low operation and maintenance cost
  • High efficiency
  • High effluent quality


The newly developed MBR system from EPE can provide waste water treatment solution to a huge variety of vessels, from small cargo and military vessels with 15 persons up to cruise liners of 3.000 passengers.

Technical Dtails
Effluent Discharge Limits IMO Marpol
IMO Marpol
MEPC 159(55)
BOD5 (Biochemical Oxygen Demand) mg/l 50 25 20
TSS (Total Suspended Solids) mg/l 50 35 25
COD (Chemical Oxygen Demand) mg/l - 125 100
Fecal Thermotolerant Coliforms cfu/100ml 250 100 <30
Residual Chlorine mg/l - - 0.05
pH - 6-8.5 7.8
Effluent Discharge Limits Triton 15 Triton 35 Triton 50 Triton 65
Hydraulic Load (lt/day 1500 3500 5000 6500
Organic Load (Kg BOD5/day) 1.2 2.8 4 5.2
Note: Specification are subject to change without notice

Sewage Treatment