Where does toilet waste go from a cruise ship?

When a toilet is flushed on a cruise ship, the sewage travels to the onboard treatment plant. Here the waste is filtered before it enters an aeration chamber. The aeration chamber cleans the waste. It is then sterilized using UV light and released into the ocean when clean enough to do so.



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The wastewater that the cruise ship uses is heavily treated. It is either discharged into the water in designated areas of the ocean or released onshore into the local water treatment system.

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And while some other items in the video also seem fairly obvious, two things that are flushable at home can't be flushed on cruise ships -- wipes and non-cruise-ship toilet paper. A Carnival ship heads out to sea.

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When a toilet is flushed on a cruise ship, the sewage travels to the onboard treatment plant. Here the waste is filtered before it enters an aeration chamber. The aeration chamber cleans the waste. It is then sterilized using UV light and released into the ocean when clean enough to do so.

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Shipboard potable water (drinking, bathing, whirlpools, etc.) either comes from a shoreside water treatment plant or is generated on board from seawater via Reverse Osmosis systems or Evaporators. Swimming pool water is typically seawater.

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When a toilet is flushed on a cruise ship, the sewage travels to the onboard treatment plant. Here the waste is filtered before it enters an aeration chamber. The aeration chamber cleans the waste. It is then sterilized using UV light and released into the ocean when clean enough to do so.

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Do Cruise Ships Dump Sewage? Yes. To get into a few more specifics than above, the U.S. allows cruise ships to dump treated waste into the ocean if they are within three and a half miles from shore. Beyond that point, there are no restrictions for dumping untreated, raw sewage in U.S. ocean waters.

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Cruise ship bathrooms in most cabins on mainstream cruise lines are only as large as they need to be in order to contain all the functional parts -- sink, toilet and shower with room to turn around. Cruise ship shower stalls can be narrow, sometimes with curtains that cling when wet.

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U.S. law requires cruise ships to treat waste within about 3.5 miles of shore—but beyond that, there are no restrictions on dumping polluted sewage and graywater. Researchers have estimated that over a billion gallons of sludge made from excrement and food scraps are released into the ocean every year by cruise lines.

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Many cruise ships have self-service laundry facilities on each deck, including washing machines, dryers, ironing and detergent. Passengers can also use the ship's valet laundry services for a fee, which includes washing, pressing and dry cleaning. Alternatively, guests can hand wash and dry within their cabin.

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Luggage screening is a thorough process that involves scanning all checked bags using X-ray machines and metal detectors. During the screening, cruise line staff looks for any prohibited items, such as weapons, drugs, and alcohol, that exceed the permissible limit.

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If you wonder whether cruise ships have jails, the answer is yes. Jails are called brigs on a cruise ship and tend only to be used in serious circumstances when no other options are available. Cabin arrest is typically used before the brig is needed.

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No cruise line is going to endanger guests (or invite legal action or bad press) by putting anything like a laxative in their food or drinks. Next time your on the ship remember: Washy Washy, and use hand sanitizer.

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Vacuum suction lines zip toilets' contents to marine sanitation farms, which siphon out the water, treat it until it's drinkable, then pump it into the ocean. Helpful aerobic bacteria digest the remaining sludge in storage tanks until it's all offloaded ashore, about once a month.

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The easiest way for ships to do this is to liquefy the leftover food in an industrial grinder. The food is blended with water until it's a smooth mixture and then either disposed of in port, incinerated, or pumped out to sea when the ship is deep water and away from the coastlines. Simple as that.

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Yes, there are morgues on most of the world's largest cruise ships. The larger the ship, the larger the morgue's capacity. Vessels are also required to carry body bags.

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Yes. All drinking water is either distilled from seawater or loaded onboard while the ship is in port.

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Cruise lines drain their swimming pools at night to discourage guests from trying to enter the pool when it is closed. Draining the swimming pools each night also allows the cruise lines to replace the water with clean water and a drained swimming pool is safer if the weather is rough.

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The depth at which a ship sits in the water is known as the draft. Most cruise ships typically have a draft of between 5 metres (16ft 5in ) and 10 metres (32ft 10in). The actual draft depends on the size of the vessel and how much fuel and ballast water is on board. A typical cruise ship draft is 8.5m (25ft 6in).

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Since its inception 30 years ago, through our Save the Waves program, we process our waste through a rigorous waste management program. All of our ships are equipped to be landfill-free, with processes in place to keep every waste stream we produce out of local landfills.

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Most cruise ship water is desalinated sea water. The process usually involves steam evaporation -- essentially turning saltwater into distilled water. That water is then mineralized for flavor and chlorinated for extra safety. Other ships are fitted with a reverse-osmosis system for filtering and/or desalination.

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1. Steam Evaporation: Also known as flash evaporation or steam desalination, the process uses steam and heat from the ship's engines to boil seawater. The water evaporates, leaving the salt as a byproduct. The now fresh water is then condensed back into distilled purified water.

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