Wärtsilä has recently developed a complete offering for handling dry waste in cruise ships. This new offering complements the company's portfolio for handling wet waste.
The new offering for both "black" and "grey" water waste, as well as disposing of dry and food waste has been ordered for one new vessel to be built by the Meyer Werft shipyard for British cruise operator Saga Cruises, with an option for a second vessel. When completed, the 236 metre long vessels will offer capacity of 999 passengers. They will sail in some of the world's most environmentally protected sea areas, including the Baltic Sea and Alaskan waters.
Waste Treatment Systems
Each vessel will be fitted with:
- an Advanced Wastewater Treatment system, including grease traps, buffer tanks, and membrane bioreactors;
- a Dry Waste Disposal system, including densifiers, glass crushers, bale compactors and storage;
- a Food Waste Vacuum system, including feeding stations, shredders, collection tanks, vacuum stations, decanters with flocculation, and food waste chutes;
- a Bio-Sludge Treatment system, including a de-watered bio waste silo, decanters with flocculation, a dryer, and a dried bio-sludge silo; and
- a Dry Garbage system, including shredders, a dry waste silo, and incinerator.
The Wärtsilä Advanced Wastewater Treatment system is in full compliance with IMO Resolution MEPC 227 (64) including ch 4.2 nutrient removal (Helcom), MARPOL annex IV Reg. 9.2 and 11.B, the Alaska Murkowski Standard (USCG / Alaska continuous discharge standard and Alaska General Permit, and the USA EPA VGP 2013.
New Membrane Technology
The overall solution will provide the vessels with an environmentally clean, safe, and energy efficient means of handling their effluent and garbage. The Wärtsilä equipment utilises new membrane technology that is said to achieve energy savings of up to fifty per cent over conventional membrane systems.
Picture: The new vessel to be built for Saga Cruises will be equipped with a new total waste management system from Wärtsilä.
