Wastewater Treatment

Marine wastewater treatment is the process of converting wastewater into an effluent that can be reused or returned to the water cycle with minimal environmental impact in compliance with the regulatory requirements.

The FMD Sequencing Batch Reactor (SBR)

An evolution in wastewater treatment that is so simple… it almost seems impossible.

The SBR series of advanced wastewater treatment plants are purpose-designed to treat the combined marine wastewater sources of Grey, Black, Galley, Laundry and dewatered food waste liquor as a single influent – simplifying management and maximising treatment to a level beyond IMO MEPC 227(64) regulatory requirements, with nutrient removal available to exceed IMO MEPC 227(64) 4.2.

Cost Effective & Reliable

The SBR systems have one of the lowest treatment costs per cubic meter available on the market today and when combined with our industry leading warranties an SBR can deliver the lowest life cycle costs available.

These plus many other benefits of SBR ownership make it an ideal solution for Naval, Offshore, Cruise, River Cruise, Superyachts and Commercial applications.

The SBR is a biological wastewater treatment system that is so effective in its simplicity, we have eliminated the need for membranes, aeration blowers and wastewater treatment chemicals while still exceeding the latest IMO requirements.

Contact us

SBR Advantages

  • NO wastewater treatment chemicals
  • NO aeration blowers
  • NO membranes
  • NO foaming
  • Low power consumption
  • Low maintenance requirements
  • Extreme resistance to toxic shock from laundry or cleaning chemicals
  • High load, low load or NO load NO problem
  • Can digest fat/oil/grease (FOG)
  • Fully automated with limited operator requirement
  • Long life equipment with very Low Life Cycle Cost

How it’s done

This simplified diagram of the FMD SBR shows wastewater being drawn from the balance tank being recirculated over Stage 1 by pump for a set time then transferred to Stage 2 to be recirculated by pump for a set time before discharge via UV.

The SBR is fundamentally different to systems currently in use, due to the nature of the biofilm in the system it has. This arrangement is fundamentally different to other wastewater treatment philosophies within the marine industry – where typically oxygen is forced into the nutrient rich wastewater to keep the biomass aerobic.

The FMD SBR plants are fully scalable from less than 1m3/day to beyond 5000 m3/day:

TECHNOLOGYActivated Sludge Process

ASP

Moving Bed Biofilm Reactor

MBBR

Membrane Bio Reactor

MBR

Sequencing Batch Reactor

SBR

CAPEXHighMediumHighMedium
OPEX €/m3 treatedMediumMediumHighLow
Key FeaturesEnergy RequirementsModerate

Aeration to provide sufficient oxygen for aerobic conditions.

Intensive

Aeration for high oxygen levels and suspended media.

Intensive

Aeration & Air scour blowers

Low

No pressurised aeration required.

Water UseNilNilBackflush & CIPNil
Water Treatment ChemicalsAntifoaming

Flocculent, Coagulant

Antifoaming

Flocculent, Coagulant

Antifoaming

Flocculent, Coagulant

Nil
PartsHigh

Pumps, Blowers & moving parts

Valves & Instruments

Consumables, (liquids/oils etc)

High

Pumps, Blowers & moving parts

Valves & Instruments

Consumables, (liquids/oils etc)

Lost or damaged media.

High

Pumps, Blowers & moving parts

Valves & Instruments

Consumables, (liquids/oils etc)

Membranes

Low

Pumps & moving parts

Valves & Instruments

MaintenanceRegular

Pumps, Blowers & moving parts

Valves & Instruments

Dosing systems

Regular

Pumps, Blowers & moving parts

Valves & Instruments

Dosing systems

repair media grates etc.

Regular

Pumps, Blowers & moving parts

Valves & Instruments

Dosing systems

Membranes

Periodic

Pumps, & moving parts Valves & Instruments

OperatorsSemiskilled

Monitor reactor behaviour and adjust on daily basis

Semiskilled

Inspect carrier biofilm and monitor reactor / troubleshoot

Skilled

Monitor parameters (TMP/Flux etc) adjust/troubleshoot.

Unskilled labour

Limited operator involvement.

FootprintLarge

Foot print due to lower biomass concentration

Smaller

Plant foot print due to high biomass concentrations.

Smaller

Plant foot print due to high biomass concentrations.

Smaller

Plant foot high biomass density.

ToleranceLow

Influent concentration

Sludge settling

Lower treated water quality.

High

Influent concentration due to biomass stability and high biomass concentration.

High

Influent concentration due to high biomass concentration and combined filtration step negating sludge settling issues.

High

Influent concentration due to biomass concentrations, high O2 levels and stability of biomass.