dazappa
May 23 2006, 10:09 PM
| | Well I'm sure you've all heard and said "if we run out of lakes etc we can get water from the ocean!" the problems is of course money because it costs a lot to heat the water and get the salt removed. Well I say either a)Leave a barrel of water of water out in the desert or iraq or some other really hot place. Or b)Use a ton of solar panels. This is still just a very small/insignificent/almost pointless idea because it would still cost a lot of money and take a lot of time. Well if you got any efficient ways of desillination and destilling water that may or may not be "better" than mine tell me! (to me the desert water-heating idea seems like it would cost less) |
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Albus Dumbledore
May 23 2006, 10:15 PM
well then Iraq would want some other reason to charge us money  neways i do not think that we will ever run out of fresh water because of the water cycle.... which is the movement and transition of water through things like condensation, precipitation, transpiration, and evaporation. basicly; Water evaporates from the earth goes in air up to clouds rains (or snows) back down to earth into lakes etc....... so i dont think that we will ever run out of water...
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truefusion
May 23 2006, 11:25 PM
With heat rising, and more storms coming about, we should get more rain. Plus, hurricanes usually bring floods. Though they're not a good thing for home-owners, it would solve many water issues. Though, it may bring many water issues. Lol.
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rvalkass
May 24 2006, 05:34 AM
QUOTE so i dont think that we will ever run out of water... Well here in the UK we have run out of water in the south east (supposedly), but every reservoir I have seen has been full. A desalination plant would work and remember, the reason they are so expensive is the amount of electricity they use. Spending more at the start on solar panels would dramatically drive down the running costs and save money in the long run.
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dazappa
May 24 2006, 04:49 PM
See? someone agrees with at least one of my ideas. But I do think you would need a lot of solar panels to generate enough energy to go through the whole process.
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sportytalk
May 24 2006, 07:27 PM
Getting water from seas and oceans is one of the things we really need to look into, especially here in England As mentioned briefly above, In the South / South East regions of the country, there has been a drought order passed, meaning that the use of hose pipes is banned, sports centres are unable to pump water through swimming pools, golf courses are unable to sprinkle water over the fairways and greens etc, water is desperately needed. We're not short of sea water in England though. We have the British Channel, The North Sea and we're also close to the Celtic Sea. The problem with the sea water, is that it contains the salt and sewage, so it's nowhere near fresh! Even though the sea water isn't really fresh, I fell we should get our water from these. I know it would cost a lot of money, but I'm sure once things started settling down, more efficient ways of filtering would be thought up and it wouldn't cost as much money to do. I'm not sure whether solar panels would help out enough with the water crisis, although in my opinion, we really should use these to store energy. I guess we'll find out what happens with the energy sooner or later. If levels are indeed lowering (as the government etc say) then there is a possibility that we may run-out.
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dreus
May 27 2006, 12:29 AM
Well, in a litteral sense, the world isn't running out of water. It's just that the world's water supply is being shared by an increasing amount of people. With earth's population on the rise, it could well reach a day when there just isn't enough for everyone. I think the 'cheapest' solution would be us being more aware of how we use our water and not wasting it. With the weather behaving so erratically, it won't be long before we have to start buying fresh water from countries that have it, or privatising water (as with the on-going debate in South America).
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dazappa
May 27 2006, 01:10 AM
Yeah it is true that half or more of all sewage and water recycling plants dump that water (which is only 95% cleaned) in the ocean. But if they boil it, some of that might get cleaned out. Also just like with anything like sportywalk said, more efficient things can be produced. Just look at cars now. Ethonol as well as hybrids are very popular. @dreus = the only way to lose water from the earth is to send up a shuttle, and for it to like crash in space. Then the water would be in space. But if we were on a major water crisis we could always get ice from space or something. That would probably be the farthest of last resorts and i'm fairly confident it won't be needed.
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tdm
May 29 2006, 06:05 PM
the world cannot run out of water unless they pump water into space lol. Howerver nasty it might sound you are drinking your urine or sumone elses. It's so well extracted there is only the water left. So there is always the same amount of water in the world. And on your question of destilling salt water, there is a very simple and cost effective way. Make huge Buckets and fill it with rainwater. Rain water does come from the oceon.
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amhso
May 30 2006, 07:52 PM
someone's eventually going to come around with strong homemade filters/boilers...so that we can just get a bucket and fill it with ocean water...and end up with tap water. and the water in stores will be fine.. and we cant really run out of water from springs, because of rain.
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salamangkero
Jun 4 2007, 06:09 AM
QUOTE(csp4.0 @ May 20 2007, 06:41 PM)  Has anyone thought the idea of using raw 'materials' to create water? like combining hydrogen with oxygen atoms. That test facility in NASA actually creates rain because of the mixing of H and O Hmmn... I once saw a TV documentary about fuel cells. It basically is a fusion reactor for hydrogen and oxygen. It is purported to be cheaper since the ingredients can be readily drawn from seawater. Of course, it's clean since its bi-product is just plain water. Now, I've been thinking, we expend energy to desalinize seawater, right? How about we expend energy to completely break down seawater into hydrogen and oxygen, in other words, fuel cells? Then, we use up the energy from these fuel cells? I dunno, cars, household appliances and stuff. Lastly, instead of just releasing the "waste" water back into the environment, what if we collected it and subject it to the usual purification techniques? (perhaps to a lesser degree, we could probably just filter it to render it potable) Of course, I know we'd still end up expending massive amounts of energy but the point is that we still get some energy back. For desalinization, we'd throw away energy and all we get is a glass of water. Fuel cells, on the other hand, means we'd throw away energy, get some back and also get a glass of water. What do you guys think? 
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srujanlive
Jun 2 2007, 07:26 PM
Well did you consider thae costs of actualy getting water till there...
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You could say a lot of things like this..You could say why not take out all the gold while your at it? But there will always be the same ammount of water that was here 10 trillion+ years ago. Its called the water cycle, it will never leave our earth, it can't.
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Tetraca
Jun 2 2007, 06:20 PM
There are salt water refinement facilities out there. The cost of maintaining them is usually what makes them unattractive, IIRC.
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master_bacarra
Jun 2 2007, 06:06 PM
one way of getting fresh water from the ocean is by freezing it. i think someone mentioned that you could get it from the polar caps. yes indeed. the water that you get from the ice on the polar regions are pure. once the water comes to the polar caps and freezes, any impurities are taken away from the water. i believe my marine science prof told us that this is one of the techniques used to make juice concentrates. so there you go. well whichever process takes faster will be most beneficial to humans.
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