US Patent for removing CYA from Pool Water - US4793935 A

[epro05]

I ran across this US Patent for removing CYA from Pool Water. (This is not related to the Bioactive threads)

Here's a link

http://www.google.com/patents/US4793935

And here's a Wiki article that has some information about melamine reacting with CYA to form an insoluble precipitate.

http://en.wikipedia.org/wiki/Cyanuric_acid

From what I understand the CYA test uses melamine which clouds the water with the precipitate, when is then used to perform the turbidity test.

Since this patent doesn't seem to have found commercial application, I'm wondering why. Safety? Economics? Not practical for some other reason?

Comments?

 

[JasonLion]

It is too problematic. There was a commercial product that worked this way and it had all kinds of problems.

The main issue is that just like with the CYA test, it tended to cloud up the pool in a way that does not clear at all easily. It was also rather expensive, though it is unclear if that was fundamental to their approach, or just a business decision.