Sabtu, 10 Agustus 2013

Once Chlorine Has Been Put In A Pool, How Long Must You Wait?

automatic pool cleaning devices on Zodiac Ranger Automatic Pool Cleaner Maintenance Kit: 3-Piece Telepole ...
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Q. Please excuse me spelling with 'Chlorine.'. But how long do you have to wait after Chlorine has been put into a pool?
My* instead of Me*.


Answer
Yes, it really depends on how much chlorine you are adding. Automatic chlorinators add chlorine as needed 24/7, so there is almost always more chlorine going into a pool which has that sort of device.

As long as the pool's chlorine level is less than about 5ppm (parts-per-million) then it would be safe to enter immediately. If you've super-chlorinated (shocked) the pool and taken it up to 20ppm or more, you would need to wait until that came down. It can be done quickly by adding a de-chlorinizer. Otherwise, it takes a while, possibly a day or two. Longer in an indoor pool.

Chlorine is consumed (used up) in two ways: the one you want most is it's reaction with organic matter, which 'burns' (oxidizes) it and vaporizes off the pool surface.

Chlorine is photo-sensitive, meaning that sunlight will also activate the chlorine and deplete it from the pool.

Some chlorine products include cyanuric acid which acts as a 'buffer' against chlorine reaction. The good news is that it slows down the reaction with sunlight and keeps you from using up a lot of chlorine. That bad news is that it also slows down the reaction with organics, which means your pool does not stay as clean. Lots of cyanuric acid in your pool will keep the chlorine levels high for a longer period.

So there are a lot of variables. The only way to be sure is to use a professional type detection kit and measure the chlorine level yourself. People saying 'an hour' or 'two hours' are using a rule-of-thumb that may or may-not apply to your situation.

Can anyone tell me how Automatic Gold Dredgers work?




Man-eo


I have been trying to figure out how something that separates the gold from the mud/sand work??

and i am getting NO WERE, lol.

Can someone explain it to me?



Answer
No prob, I live in gold country. There are the floating self sustaining dredges. They are fairly small dredges on floats. They are usually anchored. There's a suction hose that acts similarly to an automatic pool cleaning device. It moves around the bottom and deposits the silt i.e. mud/sand into a shaker box where water is continually run through. Since gold is more dense/heavier than sand/mud it tends to not be washed away. It all has to do with the periodic table of elements and their mass. What it comes down to is a filtering action where the heaviest particles stay and the lighter slag is washed away. There's also a less autonomous system where a diver uses the suction hose and manually vacuums the bottom. Hope it helps.




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