Desalinating Ocean Water for Swimming Pools

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Anonymous Poster	Desalinating Ocean Water for Swimming Pools 05/20/2008 2:38 PM
	Some time ago, I was swimming in a pool in El Salvador with a swimming pool contractor from Canada. He told me that it was economically practical to take ocean water (salt water) and desalinate it using it in large swimming pools. I find that to be questionable as I suspect that even use of RO water from such a source to be very costly. Is his comment accurate?
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bhankiii Guru Join Date: Sep 2006 Location: El Lago, Texas, USA Posts: 2639 Good Answers: 65	#1 Re: Desalinating Ocean Water for Swimming Pools 05/20/2008 6:10 PM
	All you have to do is separate the sodium from the chlorine and you've got a fresh water self-chlorinating pool.
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cwarner7_11 Guru Join Date: Dec 2006 Location: Panama Posts: 4273 Good Answers: 213	#2 Re: Desalinating Ocean Water for Swimming Pools 05/20/2008 10:59 PM
	Here in Panama, I know of a couple of installations that use raw sea water, no treatment, for the swimming pool. The water is changed daily. This seems quite a bit more cost effective than desalinating the water first, and adding chlorine. I have also heard reports, unsubstantiated so far, that there are people in the US using salt added to fresh water to maintain chlorine levels. I do not know if this is practical. What I do know is that desalinization is not generally an economical option- power required is significant.
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Tad Power-User Join Date: Dec 2006 Posts: 442 Good Answers: 32	#6 In reply to #2 Re: Desalinating Ocean Water for Swimming Pools 05/21/2008 10:07 AM
	Using electrolysis to automatically generate Cl2 for pools is becoming more common. Only a small amount of salt is required in the pool water. I think it is below the level that most people can taste. Here is one example: http://www.poolandspashop.net/saltelec.html Tad
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vijaygr Active Contributor Join Date: Apr 2008 Location: Bangalore,India Posts: 19 Good Answers: 1	#3 Re: Desalinating Ocean Water for Swimming Pools 05/21/2008 12:10 AM
	In India we use Nuclear energy to convert sea water to potable water. The hard water of sea is passed through nuclear reactor and steam generated are cooled and is converted to potable water. This conversion is very costly issue. __________________ Never never never give up
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#4 Re: Desalinating Ocean Water for Swimming Pools 05/21/2008 3:14 AM
	The operating cost of RO to produce swimming pool water comes out at about 4.0-4.5kWh per m³, as a rough-and-ready figure. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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Anonymous Poster	#5 Re: Desalinating Ocean Water for Swimming Pools 05/21/2008 7:15 AM
	How ironic - some people pay to add salt to their pools, other people want to take it out.
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2 John Active Contributor Join Date: Feb 2007 Posts: 10 Good Answers: 1	#7 Re: Desalinating Ocean Water for Swimming Pools 05/27/2008 6:37 AM
	For your info: On board of seagoing ships, a freshwater generator (ex. mfg. Atlas Denmark - www.atlas-danmark.com ) is generally used for the production of freshwater from seawater; this desalinated ocean water is also used for the swimming pool on board. Freshwater is produced at low cost: cooling water of the main-engine is used to warm-up, under vacuum, the freshwater generator… Best regards John Sijs / 2 John __________________ Tell me and I forget. Teach me and I remember. Involve me and I learn. --Benjamin Franklin--
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