Waste Water News

Advanced water treatment systems are just the start of the cruise industry’s circular waste processing ambitions.Advanced wastewater treatment systems (AWTS) were revolutionary in their day. Indeed, they still are today, but with 77% of the CLIA fleet (202 ships) already using them, and another 40 specified for vessels on order, even more ambitious waste management is coming.Martin Shutler, Principal Engineer, Product Development, at Wärtsilä Water and Waste, notes that in recent…

Nokian Tyres has made a commitment to the not-for-profit Baltic Sea Action Group (BSAG) covering, 2023–2026, to cooperate on BSAG's Ship Waste Action initiative.The goal of the initiative is to establish an operating model in which wastewater from cargo ships is discharged on shore in the harbor and the utilization of nutrients is enabled by circular economy solutions."The discharge of wastewater from cargo ships into the sea is still legal, and many shippers may not even know that wastewater from their transports is likely to end up in the Baltic Sea.

RWO recently completed two installations of its next-gen advanced water treatment system (AWTS); the CleanSewage Membrane Reactor (CS-MBR), for Celebrity Cruises. The sewage treatment plant on the Celebrity Solstice-class vessels, Celebrity Silhouette and Celebrity Reflection, have been upgraded to the CS-MBR system, with an additional three orders placed to complete the fleet-wide upgrade.RWO’s CS-MBR is a sustainable biological treatment technology that has been designed to minimize a vessel’s impact on the environment…

The IMO’s MARPOL Annex IV is being revised to confirm the lifetime performance of Sewage Treatment Plants (STPs). This may finally bring about grey water regulation – a necessity that is long overdue.Black Water and Grey WaterA ship’s sewage (black water) is collected from toilets, urinals and hospitals. The IMO’s MARPOL Annex IV prohibits its discharge, except when treated by an STP or discharged at > 12nm from the nearest land. A ship’s grey water, collected from showers, wash basins…