salt water to fresh water converter?

Question

simply put what can I do or buy to change salt water to fresh drinking water. Like if I was on sea and ran out of fresh water.

Answer 1

a still

Answer 2

Salt Water Converter

Answer 3

You can do it with a still, like the others have sugessted. This requires heat. There are solar stills that can be used on lifeboats in an emergency.

Some cruising boats have a watermaker. IT really doesnt make water, but is a pump that forces seawater through a semi-permeable membrane. (Reverse Osmosis) at very high pressure and then uses some of the water to backflush the membrane for the next cycle. These make around 40 gallons per 24 hours and use a few amps of electricity.

The limitations are, they are expensive, use up battery power and are mechanical, so they may break. If you're dependant upon that for all of your fresh water needs and it breaks....you're in deep kimche. You can only use it at sea. Bay water has a lot of junk in it that you dont want clogging your membrane. You also have to "pickle" the unit when its not in use to keep it clean. Its very delicate.

You should also have a temp tank for the water. Then after you test it, open a valve and dump it into your main tank. If it breaks, you still have water. If you are putting it directly into your main tank and it breaks, you get a big tank full of salt water and have no fresh water to use until you fix it.

There are also hand pumped versions, but they are a lot of work for the amount of water you get.

Answer 4

This link may help understand cost;
http://www.thomasdesalination.com/

This link may help understand how it works;
http://science.howstuffworks.com/question29.htm

Using the links you may be able to learn to build a nice system (That what I going to do). As mentioned a Still. Sears sells a small Electric Water Distiller. 120 volt AC and does 1 gallon in about 4 hours? My mother has one and they work great, but, I never tried with salt water. The one my mother has uses a Stainless Steel Holding Tank. I will assume from the sediment it has from regular water that salt water would leave more minerals and need cleaned more.

I could not find the Sears to show you, but, here one similar @ $270. Dang!!! I think my mom paid less than $100 when she bought hers. But, that been 15 years ago too, I guessing.
http://www.everythingkitchens.com/waterwise-4000-water-distillers.html

Answer 5

meals that will keep in a truck for up to a week? If he doesn't have a refrigerator and a microwave in the truck - then it is a limited list already. I would avoid beef, chicken, and turkey altogether. Pasta dishes like sphagetti or macaronni & cheese - frozen before he leaves home - then eaten after they thaw might work. Nuts and berries and fruits are good choices, if you can make a meal from them. Rice generally keeps pretty well - stir fried rice with cashew nuts, and maybe some vegetable - sounds good. Chillie, Soup, and most stews will keep well (but I wouldn't risk putting meat in them if he doesn't have refrigeration). also consider making use of some of the seasonings/flavorings that we use in cooking that also act as preservatives: particularly vinnegar and salt

Answer 6

They sell actual converters (both hand-pumped and from a generator), but they are expensive because salt water has so many particles in it.

Answer 7

find and get easily water converter products and services at divyashakthy

Answer 8

It's called an osmosis filter. If you have heat, salt water may be boiled and the steam captured. This is called distillation.

Answer 9

then you must have fire.put salt water in a vessel and heat it and close with another vessel around not touching the other vessel .water vapour settles and drips and you can collect the fresh water

Answer 10

Here's a link to desalinators.
http://products.katadyn.com/brands-and-products/produkte/Desalinators.html
West Marine and Defender Industries sell them.