The QM2 is a marvel of modern water/wastewater treatment technology. Four flash evaporators and a reverse osmosis unit desalinate sea water to create drinking water, producing 1,000 tons of fresh water daily. A membrane bioreactor large enough to handle a town of 8,000 inhabitants converts the waste on the ship into clean water that can be released into the sea. Incinerators on board eliminate the residuals that are impossible to recycle or to recuperate and the heat generated from this is used to as energy elsewhere on the ship. Paper, plastics, glass and packed residuals are compacted to be recycled on shore. So no floaters from this ship.