View Full Version : Reverse osmosis pumps
Tony uk
01-03-2008, 08:36 PM
Has anyone ever consisered useing Reverse osmosis pumps to purify water or to remove salt from it
I was looking at water filters and saw a reverse osmosis one and wondered can it be used to purify water for drinking ?
Ive heard that it is used in the medical industry to get clean water and also on life rafts at sea
What size are you talking about. Personal to carry with you, home, other?
Tony uk
01-03-2008, 08:57 PM
A personal one, the kind included in life rafts
All i could find however was ones for your home and was wondering if any of you had used them in the field
I've never even heard of one for the field. I had a friend that had one in his home. About the size of a medium sized garbage can.
Whoa! I did a search on Katadyn filters and here's what I came up with. Pricey!
http://www.basegear.com/survivor06.html
What are you going to use it for?
Tony uk
01-03-2008, 09:29 PM
If i could find one that was a good price then i was going to keep it in case i found a place where the water was salt water or needed to be filterd first
But now that i see the price i think that i will just forget the idea and stick to Haggis
Thanks Rick
If you are on the coast, can't you dig a hole some distance from the high tide mark and allow the water to fill the hole? The salinity should be reduced or removed by peculating through the dirt. Then use a regular backpacking filter or iodine or boil or whatever you normally use?
I found one a bit cheaper.
http://www.sea-pack.com/seapack.html
Gray Wolf
01-03-2008, 10:18 PM
I found one a bit cheaper.
Actually it isn't cheaper if you're counting the output and how long it lasts and it's limited use.
benefits...
* Produces 0.5 liters of drink in 5 hours at 68 F
* No pumping or electricity required
* High salt rejection – 97%
specifications...
* Volume: 1.8 liters
* Filter life: 10 days
* Filter output:
0.5 liters (one pint) in 5 hours - .5 liters per syrup pack - comes with five syrup packs and more can be purchased
* User effort:
Seconds to fill, no work or electricity required for filtering
I also don't see anything about filtering anything but 97% of the salt :confused:
I just saw the price and threw the link on there.
Tony - You could probably distill the water or build a standing filter. There's one in the survival manual on the front page of the forum. I think I'd try the hole method and see if you couldn't get fresh water that way.
Tony uk
01-03-2008, 10:25 PM
That was the way i was going to use, but i was seeing if there was something out there to do it in less time
Thanks Everyone :D
Airplane Guy
01-04-2008, 04:42 PM
Osmosis pumps are packed in many life raft kits - even those rafts on board business jets and some airliners and military aircraft. The most common unit for rafts rated for 4 - 25 persons is the Katadyn (PUR) 06 Pump. This pump retails for approximately $750. My company sells them and tests/overhauls them. www.corpairparts.com
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