rhody
Gold Member
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Uhhhh, if the oil slick crosses cruise line routes in the Carribean what happens to http://ezinearticles.com/?How-Cruise-Ships-Make-Fresh-Water&id=1781431" ?
excerpt:
Sounds like the Cruise ships can't run the "gauntlet" to me...
Rhody...
excerpt:
The desalination process on a cruise ship uses either flash evaporators or osmosis. Flash evaporators boil sea water and re-condense the steam vapor, producing fresh drinking water. This method is similar to the natural water cycle, where sea water is heated by the sun, rises as steam to form clouds, and then falls back to Earth as rain. The second method, osmosis, filters sea water through a fine membrane to separate pure water from salt and other minerals. Cruise ships do not desalinate water near ports or close to land, because coastal waters are the most contaminated.
After desalination, the water is passed through a mineralization plant, which adds minerals. This is necessary because the healthy minerals naturally found in drinking water have been removed by desalination. At this stage, the water is also checked for impurities, sanitized, and the pH is corrected. The water is then sent to massive storage tanks on board the cruise ship. On the Grand Princess, for example, these storage tanks hold up to 500,000 gallons of fresh water.
Sounds like the Cruise ships can't run the "gauntlet" to me...
Rhody...

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