Wärtsilä enters dry waste treatment business for cruise ships
Wärtsilä enters dry waste treatment business for cruise ships. Source: Wärtsilä
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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, thus providing a total waste management offering.

The new total offering for both black and grey water waste, [ds_preview]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. The order for the Wärtsilä equipment was placed in September, with an option for a second vessel.

According to Wärtsilä the overall full treatment solution will provide the vessel with an environmentally clean, safe, and energy efficient means of handling their effluent and garbage. The equipment utilises new membrane technology that is particularly energy efficient, with energy savings of up to 50 % over conventional membrane systems the Finnish manufacturer stated.

Advanced Wastewater Treatment system

The vessel will be fitted with Wärtsilä‘s Advanced Wastewater Treatment system, including grease traps, buffer tanks, and membrane bioreactors; Wärtsilä‘s Dry Waste Disposal system, including densifiers, glass crushers, bale compactors and storage; the Food Waste Vacuum system, including feeding stations, shredders, collection tanks, vacuum stations, decanters with flocculation, and food waste chutes; Wärtsilä‘s Bio-Sludge Treatment system, including a de-watered bio waste silo, decanters with flocculation, a dryer, and a dried bio-sludge silo; as well as a Dry Garbage system of the Finnish company, including shredders, a dry waste silo, and incinerator.

When completed, the 236 m long vessel will offer capacity of 999 passengers. It will sail in some of the world‘s most environmentally protected sea areas, including the Baltic Sea and Alaskan waters.

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.