Water Filter with Salt Water

[DVNDSN]

Okay, here is the problem: I'm going on an extended mission trip, and I am unsure of the water sources. I think there will be some, but my other friends do not. We will be hiking along a coastal region, and I am wondering if I can use my MSR Miniworks EX water filter in the ocean. Has anyone tried this?

[garlic08]

A backpacking filter will not desalinate sea water.

[Maren]

I haven't tried it, but I would think the dissolved salts would crystallize and clog the filter. Desalination is a much different and more expensive process than filtering, hence the reason municipalities generally opt to treat fresh water sources rather than build desalination plants.

[Oak88]

Try this product http://www.amazon.com/LifeStraw-Personal-Water-Filter/dp/B006QF3TW4/ref=sr_1_1?ie=UTF8&qid=1332946891&sr=8-1

[flemdawg1]

Try this product http://www.amazon.com/LifeStraw-Personal-Water-Filter/dp/B006QF3TW4/ref=sr_1_1?ie=UTF8&qid=1332946891&sr=8-1

That doesn't desalinate sea water either.

This does: http://www.amazon.com/Katadyn-8013418-Survivor-06-Desalinator/dp/B000F395X0/ref=sr_1_11?s=sporting-goods&ie=UTF8&qid=1332947595&sr=1-11

Probably out of most people's price range.

[garlic08]

Not only expensive, but it has a rate of "nearly 2 pints per hour at an average pump rate of 40 strokes per minute". I wonder how many calories that takes, too.

[turtle fast]

Where are you going? Many of us here have extensively traveled...to the backcountry of many places...maybe be of some help.

[Spokes]

Desalinators do tend to be expensive. Have you asked the mission trip organizers what they suggest?

[DVNDSN]

Turtle, I will be heading to Indonesia in the province of Java. That desalinator is extremely expensive! At 2.5 pounds, it wouldn't be worth it to carry on any trail! Spokes, I e-mailed the organizer and he said we will have some bottled water, and that he has a filter similar to my MSR. I will talk with him more next month when he comes to visit. Thank you all so much for the help!

[flemdawg1]

Not only expensive, but it has a rate of "nearly 2 pints per hour at an average pump rate of 40 strokes per minute". I wonder how many calories that takes, too.

But hey you're walking along the beach, get an extra long suction line and walk and pump at the same time.:cool:

[BigHodag]

You going on a mission to where humans are already living, so there is a source of fresh water that is sustaining the existing humans. Thriving human population = fresh water source, which may or may not need treating.

"Solar water disinfection - the SODIS (http://www.sodis.ch/index_EN) method - is a simple procedure to disinfect drinking water. Contaminated water is filled in a transparent PET-bottle or glass bottle and exposed to the sun for 6 hours. During this time, the UV-radiation of the sun kills diarrhoea generating pathogens." Not practical for backpackers, but as a missionary, you could make a set of bottles and rotate their use.

Additionally, I'd take some materials for capturing rain water.

Read up on coconuts and the nutritious potable "milk" inside.

Might read up on the local flora to determine is any of the plants store water, which can be harvested by slicing off parts.

Finally, learn how to build a solar still and take along parts kit (tubing, plastic sheeting, etc).

[Odd Man Out]

Sawyer also makes a product for filtering water (not desalinization) they market for people going to live in remote places without safe drinking water. It's a gravity system with two buckets, a hose and a filter. https://www.sawyersafetravel2.com/more.asp?pid=122

[Wise Old Owl]

almost all hiker water filters are fresh only - they cant back wash effectively.

http://247water.org/emergency-saltwater-filtration.html Seapak
http://247water.org/emergency-backpacking-water-backpacking-gear-backpacking-equipment.html Xpak

http://ga.water.usgs.gov/edu/graphics/desalinationprocess.gif http://ga.water.usgs.gov/edu/drinkseawater.html

[Wise Old Owl]

Instructions



Do-it-yourself Desalination

1 Clean the pressure cooker, condensing line (plastic or metal) and collecting vessel with soap and water. Air dry.
2 Slip the condensing line over the pressure cooker lid's pressure relief (http://www.ehow.com/how_5625711_change-sea-water-drinking-water.html#) post. The tighter the fit, the better.
3 Fill the pressure cooker base 75-90 percent with sea water and place on stove burner.
4 Fit pressure cooker lid onto pressure cooker and turn on stove burner to medium heat.
5 Place open end of condensing pipe into glass collection vessel.
6 Heat the pressure cooker until the collection vessel is full of pure water or until condensing water no longer drips from the hose.
7 Remove pressure cooker from heat and allow to cool.
8 After cool-down (at least one hour), clean the pressure cooker, lid and condensing pipe before re-using.





Read more: How to Change Sea Water to Drinking Water | eHow.com (http://www.ehow.com/how_5625711_change-sea-water-drinking-water.html#ixzz1qYrRGUNs) http://www.ehow.com/how_5625711_change-sea-water-drinking-water.html#ixzz1qYrRGUNs


Backpacking Pressure cooking - reduced dinner times and meaty low cost meals..
http://bargainoffers.com/catalog/haw...ker-p-571.html (http://bargainoffers.com/catalog/hawkins-liter-aluminum-pressure-cooker-p-571.html)

http://www.wisementrading.com/campco...surecooker.htm (http://www.wisementrading.com/campcookware/pressurecooker.htm)

GSI PRESSURE COOKER

http://www.amazon.com/GSI-Gsi-Pressure-Cookers/dp/B004BTWCLQ

Then you need to get a copper coil like a ice maker line and find a way to connect it in place of the weight.

[leaftye]

Using a pressure cooker is convenient.

Copper coil shouldn't be needed. Any hose should work as long as it's long enough for the steam to condense within it. Adding a few loops in the middle would help, especially if those loops were chilled in cold water.

[Theosus]

Using a pressure cooker is convenient.

Copper coil shouldn't be needed. Any hose should work as long as it's long enough for the steam to condense within it. Adding a few loops in the middle would help, especially if those loops were chilled in cold water.

Yeah you can desalinate water in much the same way you make moonshine. You could make a portable still out of an all metal bottle and a few plumbing fittings, if you really put your mind to it. The big problem would be melting the outlet hose if it gets too close to the fire.