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A load of balls!

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A load of balls!

Old 12th May 2019, 21:19
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A load of balls!

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Old 13th May 2019, 09:18
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Why is the reservoir between the filtration unit and the customer?
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Old 13th May 2019, 10:26
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Interesting clip, seriously, albeit the title did suggest you had misplaced it from the Brexit thread......which thankfully was not the case.

There again, as the project benefits the environment, makes you wonder why you know who hasn't banned their use yet
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Old 13th May 2019, 11:03
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Originally Posted by Mallan View Post
Why is the reservoir between the filtration unit and the customer?
Almost the same question that I had - what is unique about this location that it required such a solution?
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Old 13th May 2019, 11:29
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Old 13th May 2019, 15:01
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But that doesn't explain why it's (apparently) the only reservoir anywhere that needs to be covered that way.
Or are they the only water authority who tests for Bromate?
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Old 13th May 2019, 15:33
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Originally Posted by Sallyann1234 View Post
But that doesn't explain why it's (apparently) the only reservoir anywhere that needs to be covered that way.
Or are they the only water authority who tests for Bromate?
Watching the video, it seems to be a combination of using chlorine to control algal growth plus bromide in the source groundwater, plus sunshine. Probably a relatively unusual set of circumstances. It does seem odd to store treated water in an open reservoir like this, though.
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Old 13th May 2019, 16:13
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96 million at 3 for a dollar certainly adds up to quite a sum.

Can you imagine proposing that one - "I'd like to buy some plastic balls and it's only going to cost $32m dollars..."

Then there is the guy who's given the job of making them. If he ever sees another black ball...
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Old 13th May 2019, 19:03
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If you do a bit of research you’ll find an underground replacement is currently being constructed with a park over the top.
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Old 13th May 2019, 23:26
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Borne Mill in Colchester nearly had its surface covered in oil during the war. It was to disrupt Nazi navigation as all lakes were plotted and used on moonlit nights for navigation.
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Old 13th May 2019, 23:47
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One problem with this type of solution is local winds.
We routinely get 60 - 100 km / h early morning winds in the areas where our water reservoirs exist.

That results in a huge pile of balls, or whatever, in one corner of the reservoir and not much anywhere else.
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Old 14th May 2019, 00:18
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About 50 years ago, experiments were done in Australia, using floating balls to try to limit evaporation from lakes & storages. I don't remember the details, but I think ping-pong balls were involved, and they experienced the wind problem, as suggested by WingNut60.
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Old 14th May 2019, 06:48
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Because the balls are part filled with water I imagine they won’t stack too deeply when the wind blows strongly. As soon as the wind drops the weight should ensure they spread out again. I guess short term exposure of a small portion of the reservoir to sunlight wouldn’t be too much of a problem.

I’m surprised the balls cost 33c each though. Knowing the stuff they make in China for a few cents, I would have thought they shouldn’t be more than pennies in that quantity. They are 3 times the cost of play pool balls bought 1000 at a time. Are there some rich middlemen or is it the heavy duty food grade plastic loaded with carbon black that makes them expensive?
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