CASE STUDY: FT. LAUDERDALE, , USA

CleanSea® System Treats Wastewater Onboard the Largest in the World Background The successful management of the world’s marine environment C u s t o m e r : Royal International has unique challenges when compared to land based I n d u s t r y : Marine environments. The oceans encompass a huge area to manage, their political boundaries are blurry, and conditions in one small area can have serious impacts on much larger, far removed areas.

With the acquisition of Hydroxyl Systems Inc. in 2009, Headworks BIO™ Inc. expanded its wastewater treatment portfolio to include KEY FACTS MBBR/IFAS biological wastewater treatment systems. The CleanSea advanced shipboard wastewater treatment system, • Length: 360 m (1,187 ft) from Headworks BIO Inc., has specifically been designed for the • Width: 65 m (208 ft) demands at sea and is currently installed on the largest cruise • Passengers & Crew: ~8.400 ship in the world, the Oasis of the Seas. • Hydraulic Capacity: 3,000 m³/day (0.79 MGD) • Typical Flow: 2,000 m³/day (0.53 MGD) Oasis of the Seas is an oasis-class cruise ship in the fleet of Royal • Max. Influent BOD₅: ~1,500 mg/L Caribbean International. The ship was completed and turned over • Max. Influent TSS: ~850 mg/L to Royal Caribbean in November 2009. Oasis set a new record for Headworks BIO meets Alaska State Discharge Standards carrying over 6,000 passengers. Since then, the Oasis class has • Effluent BOD₅ : < 15 mg/L expanded to include her sister ship, the . Both • Effluent TSS: < 15 mg/L vessels cruise the Caribbean from in Fort Lauderdale, Florida. QUALITY THAT NEVER QUITS™ Oasis of the Seas - FT. LAUDERDALE, FLORIDA, USA CASE STUDY

Design The final treatment stage is UV Results disinfection where high intensity, The CleanSea system onboard the multiple stage UV reactors disinfect The system exceeds all current Oasis of the Seas processes all of the the effluent water as it flows though effluent standards and was designed ship’s wastewater, including all black, in a single pass. Non-biodegradable with a large capacity of 3,000 grey, galley, and laundry water. viruses, pathogens, and m³/day to cope with the Mixing of black and grey water pharmaceutical residuals are requirements of 6,300 passengers streams is fully automated and is destroyed. Disinfected effluent may and over 2,000 crew members. followed by primary solids removal by then be directed to ballast holding MBBR technology requires less fine screen rotating drums. The tanks or overboard for discharge. energy and space than conventional screening equipment incorporates an or membrane wastewater treatment automatic sparging system which systems, both paramount ensures that the screen surface is considerations in the extremely maintained clean and free of solids We’ve been extremely limited confines of a cruise ship. build up. The solids removed at this “ stage, and at all later stages, are impressed by their [Headworks The CleanSea system is also certified dewatered to produce powder-like BIO] determination to not only to MEPC 159(55) rules by Det solids that are fully burnable and can Norske Vertitas. By performing this be incinerated on board or bagged for accomplish certification of the process onboard, the waters of the safe shore disposal. world do not have to process the system on time for the ship’s wastewater generated by humans at At the core of the CleanSea system is maiden voyage, but to ensure sea allowing the Oasis of the Seas to the ActiveCell® MBBR/IFAS biological greatly minimize its environmental treatment process. The ActiveCell that the system is the best impact wherever she may travel. process employs thousands of virgin polyethylene media operating in a possible design aboard any mixed motion within an aerated cruise liner in the world. On wastewater treatment basin. Every piece of media provides a protected many levels, Oasis of the Seas surface area that supports the growth is a world class engineering of heterotrophic and autotrophic bacteria. The high density of bacteria feat, including the unique ensures a high rate of biodegradation and is also self-maintaining, requiring biological system for treating no chemical additives, cleaning, or its wastewater. backwashing. ” - Sami Hautala The CleanSea System installed on the Subsequently, ActiveFloat™ DAF ship’s hull during ship building. The equipment removes total suspended Vice President of STX Europe biological treatment basins are located in solids generated in the biological the far corner of the block. process and any particulate matter not removed during primary solids removal. Tertiary filtration then provides a positive barrier to particulate and total dissolved solids.

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