What Happens After You Flush on a Cruise Ship

What Happens After You Flush on a Cruise Ship


These days, any cruise ship is like a huge
city, where every detail is thought out so that passengers feel just as comfortable as
on land, only better. You can take a shower, do the laundry, or
swim in a pool. But where does all the dirty water go? Like any city, cruise ships produce tons of
waste and sewage. And no, they don’t throw it into the seawater
– those islands of plastic get into the oceans from the land. First, even though the passengers don’t
notice, the water supply system onboard the ship is designed to use the water sparingly. Aeration mechanisms fill the water coming
out of the faucets and showers with air, and as a result, less water is flowing out. Even a gallon saved per person saves thousands
of gallons a day! And still, the average ship spends about 40-50
gallons of water per passenger every day. It makes tons of wastewater that needs to
be utilized. Say, the world’s biggest cruise ship, Harmony
of the Seas, can carry about 5,500 passengers together with 2,300 crew members. They produce about 312,000 gallons of wastewater
daily, and it all goes to the sewage system. There are two categories for the wastewater
on cruise ships: “grey” and “black”. Greywater comes from laundry, showers, baths,
and kitchens. Blackwater comes from bathrooms. The highest volume of wastewater comes from
greywater. It gets mixed with some of the blackwater
and is sent to the bio-reactor. First, all the solids are filtered out, and
after that it goes to another tank where bacteria are added. They do their job by eating small waste particles
and cleaning the water. After they’re done, the liquid in the tank
is already pure enough. But it also gets cleaned with ultraviolet
light. Chlorine and other chemicals aren’t used
since they’re bad for the sea’s eco system. At the final stage, the water is analyzed
for its bacteria content, and in case any harmful microorganisms are still found, it’s
sent for extra cleaning. They say that the water that gets thrown overboard
after all these procedures is still cleaner than the ocean water. That’s why some harbors allow its disposal
into the sea within the 12-mile sanitary zone. The solid waste that was filtered at the first
stage is kept in special tanks until the ship arrives at the harbor where it’ll be utilized. All the ships have special tanks called “ballast
tanks” that are full of water and kept down in the ship to keep it stable. They have to fill these tanks with seawater
anyway, so why not use waste instead? Scientists have noticed that ballast water
taken from one ocean and thrown into another is bad for the ecosystem. The species of plankton and other sea inhabitants
vary in different oceans, and the “strangers” can start destroying the “natives”. That’s why modern ships have special filters
that clean out the plankton and fish from the ballast water; they’re sent back to
the sea, and the water is purified with antibacterial lamps. After that, it can be poured into another
ocean without doing any harm to the ecosystem. There’s also water on every ship that’s
referred to as “technical water”, which includes condensed water, cooling water, and
boiler water. It contains oil, and if it’s just thrown
into the sea, it’d be no good for the eco system. That’s why it’s sent to the separator
which purifies the technical water from the oil. The rule has it that technical water thrown
into the ocean shouldn’t contain more than 0.000015 parts of oil products. Doesn’t sound like that much, right? Sensitive detectors measure the level of oil
in the water, and if it’s even a bit higher than what’s allowed, the water is sent for
cleaning again. After that, it can be poured into the sea. What about other kinds of waste? The International Maritime Organization has
strict laws about utilizing waste, and they’re perfectly eco-friendly. There’s special staff on board every ship
who sort out the garbage into 4 categories – food waste, paper, metal and glass, and
plastic. So, a tea bag should be divided into 3 waste
categories: the bag itself and the string would go to the paper, tea leaves are food
waste, the staple holding the string to the bag – to metal. Imagine how many tea bags they have to sort
out on the Harmony of the Seas! 5,500 passengers can have tea once or twice
daily. Now you know who real superheroes are! Most of the food waste is considered natural:
it doesn’t do any harm to the sea’s ecosystem. Marine inhabitants are happy to finish up
what passengers have thrown out. Big food waste is chopped into small pieces
in a special machine. Say, if you fill the 6.5 gallon container
with chicken bones, bread loaves and tangerine peels, you’ll get less than 1 gallon of
dry, small chips that your aquarium fish would eat with pleasure. The only rule about food waste refers to the
distance from the land where the ship can throw it into water. It can be thrown overboard beyond a 12-mile
sanitary zone. Household waste, cooking grease, and solid
waste are kept on board until the ship arrives at the harbor and is utilized there. Paper waste goes to a special stove where
it gets burned. Metal and glass are just thrown overboard. Surprised? These two just drop to the bottom and do no
harm to the sea. They get polished by the water for years and
then turn into the beautiful smooth pieces that you sometimes find on the shore. The rules about the distance from the land
where metal and glass can be thrown are stricter though. In the Mediterranean Sea, it’s not allowed
to throw them overboard at all. All the plastic used onboard during the cruise
is kept there until the ship arrives at a harbor. To make the process of disposal faster and
easier they use a special machine that presses all the plastic waste into blocks. Strict rules also apply to the passengers
themselves. On every deck of a cruise ship, there are
usually special instructions that forbid them from throwing anything overboard themselves. And by the way, where does all the water on
the ship come from? They can’t take along all the freshwater
used for drinking, cooking, and washing before departure, right? Turns out, all cruise ships have desalinating
plants. When the ship goes farther than 25 miles from
the land, they take seawater, which goes through a many-layered filter, a powerful ultra-violet
lamp, and a desalinator. The final step is the mineralizer – a huge
tank filled with all the useful minerals that freshwater usually contains. After that, it goes under the ultraviolet
lamp again and – presto! It can be used for drinking. The desalinating plant is the size of a room
and gives enough fresh water for all the passengers and crew. That’s about 40-50 gallons per person a
day, remember? Do you know any other interesting facts about
cruise ships? Let me know down in the comments! Hey, if you learned something new today, then
give the video a like and share it with a friend! And here are some other cool videos I think
you’ll enjoy. Just click to the left or right, and stay
on the Bright Side of life!

100 thoughts on “What Happens After You Flush on a Cruise Ship

  • November 18, 2019 at 3:17 am
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    If there is a desalination process that converts sea water fit for drinking than why is there a hue and cry about drinking water declining all over the world? Is it the cost involved or something else?

    Reply
  • November 18, 2019 at 3:19 am
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    If it's yellow let it mellow, if it's brown flush it down

    Reply
  • November 18, 2019 at 3:19 am
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    It all goes to Belle Delphine.

    Reply
  • November 18, 2019 at 3:19 am
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    2020 anyone

    👇👇

    Reply
  • November 18, 2019 at 3:21 am
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    Who want subscriber???

    Reply
  • November 18, 2019 at 3:21 am
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    New vid idea how do they turn off anti gravity in space ?? Like on the spaceship

    Reply
  • November 18, 2019 at 3:22 am
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    Wow, cruise ships are sustainable (well at least about water)!!! 👍

    Reply
  • November 18, 2019 at 3:22 am
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    so basically it's like a cruise ship Ameren 🤦🏼‍♀️

    Reply
  • November 18, 2019 at 3:24 am
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    Hey bright side please talk about copaa new rules about YouTube
    Because most of your videos are seems like to kids

    Reply
  • November 18, 2019 at 3:25 am
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    Wish you Great Blessings in the year 2020

    👇🏽 I’m gifting my next 100 subs

    Reply
  • November 18, 2019 at 3:26 am
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    The waste becomes food for the fishy 😂

    Reply
  • November 18, 2019 at 3:27 am
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    Too much info., but very informative.👍

    Reply
  • November 18, 2019 at 3:27 am
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    Give me a shout out plz

    Reply
  • November 18, 2019 at 3:28 am
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    So early I don't see any bots

    Reply
  • November 18, 2019 at 3:29 am
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    There's still more fresh water than in Africa 😂

    Reply
  • November 18, 2019 at 3:29 am
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    Always thought..who's the owner of BRIGHT SIDE??!🤔

    Reply
  • November 18, 2019 at 3:29 am
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    pretty sure much of this is not followed especially in the third world

    Reply
  • November 18, 2019 at 3:30 am
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    water pollution at its best

    Literally Nobody

    Reply
  • November 18, 2019 at 3:31 am
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    I thought the dirty water will go through processes and turn into clean water again, like what they do on the I.S.S

    Reply
  • November 18, 2019 at 3:33 am
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    I just went on the Harmony of the seas

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  • November 18, 2019 at 3:34 am
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    I highly doubt that they do all that cleaning.. they just dump their waste in the ocean thats it.. well companies have to cut expenses

    Reply
  • November 18, 2019 at 3:38 am
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    Please can you make a similar video on a plane ? I mean, what happens to waste in a plane

    Reply
  • November 18, 2019 at 3:38 am
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    Joke 6:03
    He: throws plastic flask in the water
    Security: throws him🤣

    Reply
  • November 18, 2019 at 3:38 am
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    "Heyyyyyyyy"

    Reply
  • November 18, 2019 at 3:39 am
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    Invite Bill Burr to your next cruise.

    Reply
  • November 18, 2019 at 3:39 am
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    One of the best BRIGHT SIDES ever in my opinion. I had no idea about any of this. I'm not talking just 50% of the facts were new to me; I'm saying every single fact discussed here, 100%, was new and surprising to me. That's amazing work for the producers/writers to achieve that for 7 straight minutes.

    Reply
  • November 18, 2019 at 3:40 am
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    Congrats finally Bright Side change the title !

    Reply
  • November 18, 2019 at 3:41 am
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    Hi

    Reply
  • November 18, 2019 at 3:41 am
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    Roast me

    Reply
  • November 18, 2019 at 3:42 am
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    There's a desalinization plant on every ship? That's what you're drinking most of the time you have water? That's astonishing to me.

    Reply
  • November 18, 2019 at 3:44 am
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    Enlightened..

    Reply
  • November 18, 2019 at 3:44 am
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    This is basically Marpol.

    Reply
  • November 18, 2019 at 3:45 am
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    If human race Have to continue, other creatures must be alive .

    Reply
  • November 18, 2019 at 3:47 am
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    Nobody:

    Not a single soul:

    YouTube: Hey, you wanna know what happens when you flush the toliet on a cruise ship?

    Me: Alrighty then, I should be sleeping but, i guess I'll watch it.

    Reply
  • November 18, 2019 at 3:47 am
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    Fascinating!

    Reply
  • November 18, 2019 at 3:47 am
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    isn’t the biggest ship the symphony of the seas? Just curious…

    Reply
  • November 18, 2019 at 3:49 am
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    Cruise ships are actually really bad for the environment and its crazy how much waste they produce

    Reply
  • November 18, 2019 at 3:50 am
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    Well…… Thanks 🙈

    Reply
  • November 18, 2019 at 3:52 am
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    Is there anyone here where we could throw hands

    Reply
  • November 18, 2019 at 3:53 am
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    BRIGHTSIDE Your subcount has been abbreviated just so you know

    Reply
  • November 18, 2019 at 3:53 am
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    Its a surprise to me how its legal to throw glass bottles into the ocean.

    Reply
  • November 18, 2019 at 3:54 am
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    How about throw excess food of compost down to the sea?? That sea water is also “shark infested”.

    Reply
  • November 18, 2019 at 3:56 am
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    So if desalination works that well, how come California still have water crisis?

    Reply
  • November 18, 2019 at 3:58 am
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    Symphony of the Seas is the biggest cruise ship, not harmony of the seas.

    Reply
  • November 18, 2019 at 3:59 am
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    Isn't symphony of the seas the largest cruise ship in the world?

    Reply
  • November 18, 2019 at 4:02 am
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    Everyone subscribe to me it would mean a lot to me,also nice explanation bright side stay on the bright side

    Reply
  • November 18, 2019 at 4:02 am
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    You could look this up on google and read about it in about 1-2 mins

    Reply
  • November 18, 2019 at 4:03 am
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    Some of cruiseship dont following rules. They throwing food waste without going in pulper machine..they just throw directly. Im 100 percent sure of it.

    Reply
  • November 18, 2019 at 4:03 am
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    Who’s here before a million views?
    👇🏽

    Reply
  • November 18, 2019 at 4:05 am
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    💨🏰 , interesting

    Reply
  • November 18, 2019 at 4:10 am
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    TODAY IS MY HAPPy BIRTHDAY WHO GIFTED ME 1SUBSCRIBE FRIENDS

    Reply
  • November 18, 2019 at 4:11 am
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    I hope that's not done polluted water as it is.

    Reply
  • November 18, 2019 at 4:17 am
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    You stole this idea from a youtube channel named Casual Navigation

    Reply
  • November 18, 2019 at 4:19 am
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    Hopefully california hops on desalinization like the aussies..

    Reply
  • November 18, 2019 at 4:21 am
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    Da sick music

    Reply
  • November 18, 2019 at 4:21 am
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    Any Tanzanian here?

    Reply
  • November 18, 2019 at 4:24 am
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    The biggest cruise ship in the world is Symphony of the Seas, not Harmony of the Seas

    Reply
  • November 18, 2019 at 4:29 am
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    Good too no

    Reply
  • November 18, 2019 at 4:29 am
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    The worlds biggest cruise ship is actually symphony

    Reply
  • November 18, 2019 at 4:32 am
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    80% of the things said here came from Casual Navigator.

    Reply
  • November 18, 2019 at 4:33 am
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    always as ever educative agree???

    Reply
  • November 18, 2019 at 4:34 am
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    I learned something new today. Thank you for teaching me about this

    Reply
  • November 18, 2019 at 4:34 am
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    How tf did i get sea sick from watching this

    Reply
  • November 18, 2019 at 4:35 am
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    This is like how society as a whole operaretes.

    Reply
  • November 18, 2019 at 4:36 am
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    Who's been a BIG fan of BRIGHT SIDE before 2019??

    💙
    👇gifting next 86 loyal subs🎁

    Reply
  • November 18, 2019 at 4:37 am
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    The music though

    Reply
  • November 18, 2019 at 4:41 am
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    i’m going on a cruise in a few days so thank you

    Reply
  • November 18, 2019 at 4:47 am
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    40-50 gallons a day per passenger seems way off to me

    Reply
  • November 18, 2019 at 4:49 am
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    Technical water is just fresh water that hasn’t been treated for human consumption. Often called non potable. There should never be oil in boiler water or cooling water. Especially boiler water as it can cause major damage. The water that gets treated in the oily water separator is bilge water. It is water that drains to the bottom of the ship and can be contaminated with oil. The oil that’s separated out if bilge water is collected in a waste oil tank and either burned or sold ashore. Cruise ships usually use an evaporation plant to generate fresh water and not a Reverse Osmosis ( filtration) plant. A vacuum is pulled on a huge pressure vessel which is then heated with waste heat from the engines. Because of the vacuum the sea water pumped in evaporates and the salt is left behind in a brine which is pumped overboard.
    The reason you don’t put chlorine in the sewage plant is that it kills the micro biome that treats the sewage.

    Reply
  • November 18, 2019 at 4:49 am
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    Yeah drum n bass song :v

    Reply
  • November 18, 2019 at 4:50 am
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    OK, I believe state-of-the-art recent cruise ships take all those measures. But a ship has a lifespan of several decades. This means that there are many ships sailing today that were built long before these technologies were available and before there were even environmental concerns. Also, the bulk of the maritime fleet is not composed of luxury cruise ships. It's cargo and fishing vessels of all sizes. Right now, the Northeastern coast of Brazil is suffering from an oil spill from an unidentified ship somewhere in the Atlantic, with very serious environmental damage in over 2,000 km (1,200 miles) of coast. Again, I believe a brand-new supertanker takes all those measures, but not your average small freighter or trawler from China or India. And talking about India, have you ever heard of a small town there called Alang, on the Gujarat coast? It's where ships go to die and be broken down. And this is done in horrific labor and environmental conditions.

    Reply
  • November 18, 2019 at 4:51 am
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    lol i have always wonder that lol how toilets work on a cruise ship 🥴😂🤢 I can't imagine on an airplane 😝

    Reply
  • November 18, 2019 at 4:53 am
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    Hmmm… yet barges get to dump their water in Galveston making it to where we can swim due to high level of fecal matter . 😑

    Reply
  • November 18, 2019 at 4:55 am
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    "The desalination plant is the size of a room"? That doesn't narrow it down very much. Is it like a bathroom or a ballroom?

    Reply
  • November 18, 2019 at 4:57 am
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    Biggest cruise ship is symphony of the seas I checked when this was made so. DAB

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  • November 18, 2019 at 4:59 am
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    Okay well that's good to know. I sure would like to try to flush the toilet…in the cruise ship. 😀

    Reply
  • November 18, 2019 at 5:06 am
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    WoW a SquArE BoTtLe NeveR SeEn ThaT BefOrE

    Reply
  • November 18, 2019 at 5:09 am
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    All this only applies to if your ship is less than 10-15 yrs. old "modern" and you don't have a corrupt company. How do you think those huge trash islands exist in the Pacific? Probably half of it is from ships! There's one that's almost the size of Texas and thick enough in some places to build on! How appropriate that this channel is "The Bright Side" if they think that half of those things are actually done it's ridiculous. And just because human waste is watered down and treated doesn't make it safe to dump in the ocean!

    Reply
  • November 18, 2019 at 5:09 am
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    This is how much time he stayed …. WATER 😂😂
    👇🏻

    Reply
  • November 18, 2019 at 5:09 am
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    Whose watching this while on a cruise ship? Cause I am.

    Reply
  • November 18, 2019 at 5:10 am
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    1 Gallon is approximately 3.78 L, NOT 5 L.

    Reply
  • November 18, 2019 at 5:13 am
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    I 've always wondered what the effects of the World Wars had on the oceans.

    Reply
  • November 18, 2019 at 5:14 am
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    In 1988 Carnival Cruiseline dumped all trash overboard into the water, bagged up in large plastic bags. I witnessed this at 11pm when walking the deck one night. Disgusting. I've never been on a cruise since.

    Reply
  • November 18, 2019 at 5:16 am
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    symphony of the seas is the biggest cruise ship.

    Reply
  • November 18, 2019 at 5:16 am
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    When a machine stops working right ; the minimum wage foreigners do whatever they have to do to keep a job

    Reply
  • November 18, 2019 at 5:18 am
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    this feels and sounds like a native ad.. like im almost positive a cruise ship company paid to have this made

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  • November 18, 2019 at 5:18 am
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    I’m an engineer on these systems. This is a decent overview, but not entirely accurate. For example, your technical water most certainly doesn’t have oil in it. If oil gets into the tech water, it’s a pretty bad day.

    Reply
  • November 18, 2019 at 5:23 am
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    Please look chanel "sisi terang".. i think "sisi terang" copy paste from "brigt side"

    Reply
  • November 18, 2019 at 5:24 am
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    Me: sees bright side at 1.5 mil
    I tune out for a couple of months
    Comes back after a few months
    31 mil now

    Reply
  • November 18, 2019 at 5:25 am
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    Well the ocean life does it…

    Doesn’t that mean we could too?

    Reply
  • November 18, 2019 at 5:31 am
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    Not the video I wanted, but the video i needed!

    Reply
  • November 18, 2019 at 5:35 am
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    This biggest cruise ship in the world is actually symphony of the seas

    Reply
  • November 18, 2019 at 5:36 am
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    Wut? I did not understand a singel word

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  • November 18, 2019 at 5:45 am
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    Symphony of the Seas is the biggest cruise ship at the moment.

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  • November 18, 2019 at 5:46 am
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    I KNEW THEY KEEP THE WATER IN SHIP

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  • November 18, 2019 at 5:46 am
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    YUCK!! ..now I know now!!someday the water Ocean will get dirty!!😕

    Reply
  • November 18, 2019 at 5:48 am
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    It’s ok to throw cats and dogs , overboard

    Reply
  • November 18, 2019 at 5:53 am
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    Ever been to a gym? Some guys stay in the shower for over an hour, without a care in the world.
    Me 10 minutes with on and off at the shower head.
    Cruise ships, Navy ships, throw all liquid and solid waste into the oceans.
    And now you know why they show you animated cartoons.

    Reply
  • November 18, 2019 at 5:54 am
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    this asian narrator's stinky voice is unbearable

    Reply

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