Isn't that what cruise ships do?
2007-04-09 17:30:38 · 15 answers · asked by RobertH 1 in Environment
Yes, it is possible to turn sea water into fresh water. It's called desalination, and there are several techniques. There is one method of freezing and thawing. When water is frozen, solids trapped in the water are pushed out as it solidifies. The salt is removed from the frozen water, thawed, and the process repeats until it is pure. Another method is reverse osmosis. And yet another is electrodialysis. These are just a few.
2007-04-09 17:37:13 · answer #1 · answered by chels 1 · 0⤊ 0⤋
Filter is not the process here, because the minerals and especially SALT in sea water are soluble. Filtration can only separate the insoluble stuff in sea water like sand and other particles but not salt. So filtered sea water is not fit for drinking.
Some cruise ships carry fresh water with them and always top up their supply at ports, just like the way cargo ships pick up and drop cargo. Others use distillation equipment on board.
Also desalinzation is currently* the best way to produce drinking water from sea water.
*Not sure if this is still the best way. Right now, Reverse Osmosis is also being used. See NEwater, singapore.
2007-04-09 17:40:03 · answer #2 · answered by goodmanbing 3 · 0⤊ 0⤋
it is posible but its expensive and maybe does not taste very good
if it was viable we would have been doing much more of this already for ages
water has been a big problem for many people for a long time
the Arabs even towed icebergs all the way to Arabia ,if there was a good way to desalinate sea water and make it potable they would be doing that .money for these guys is no problem
all ships take on water ,cruise ships take on expensive bottled water
2007-04-09 20:15:13 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Yes it is possible. All you must do is evaporate the water by heating it up somehow, and somehow collect the now pure water. There's also filter straws that you can buy, that have filters that filter the salt out of the water. Desalination plants do this kind of thing on a large scale. There are many you can do it.
2007-04-09 17:38:03 · answer #4 · answered by Roman Soldier 5 · 0⤊ 0⤋
Agrees that some of the comments here are completely ignorant and un-educated responses. The body was not intended to digest all the processed chemicals we are slamming into it every day. The salt water flush and the Master Cleanse in general are not gimmicks for sale. This information is free and available to anyone who wishes to seek out a healthy alternative to purging one's self of all the gunk and goo lurking in the body. You are using too much salt. If 2 tsp is not getting any movement GRADUALLY increase the salt but not to such extreme amounts. I cannot stand salt water but i get it down and it works great. If you cannot drink it I have seen many people suggesting to put the sea salt into capsules...just make sure you follow them up with the right amount of water as it is important. Good luck and if you have any other questions go to facebook. There are many great groups out there all happy to help and non-abusive. I reccommend Reach4Raw as those guys are super helpful.
2016-05-21 04:19:33 · answer #5 · answered by ? 3 · 0⤊ 0⤋
Yes it is possible and is done all over the world, in a small scale though. Typically, a process is used called "Reverse Osmosis", when a water is pushed through a very fine membrane. It produces water close to distilled. After that minerals are added to water to improve taste. This process wastes about 75% of water that can't get through membrane and has to be flushed down the drain.
Distilleries are also used, but they are not very efficient compared to Reverse Osmosis.
2007-04-13 04:05:18 · answer #6 · answered by TheWaterGuy 2 · 0⤊ 0⤋
Reverse osmosis is the most common type of process for desalination. It can be utilised on all scales from a small unit to supply a ship or a large plant to provide potable water to a city. Google reverse osmosis.
2007-04-09 17:40:20 · answer #7 · answered by GOD 3 · 0⤊ 0⤋
Of course it's possible. And not only for cruise ships, but many cities around the world use desalination every single day.
New technology makes it cheap and easy.
2007-04-09 20:36:05 · answer #8 · answered by Jolly1 5 · 0⤊ 0⤋
Yes, it is known as desalination. It is generally not economical but may be so if located by a power plant; especially if it uses waste heat.
I'm not sure if cruise ships do that, however I doubt it.
2007-04-09 17:36:58 · answer #9 · answered by justin_at_shr 3 · 0⤊ 0⤋
Cruise ships use steam distillation. It can be done by solar evaporation in small quantities, or one could use reverse osmosis.
2007-04-09 17:37:43 · answer #10 · answered by Anonymous · 0⤊ 0⤋