I believe I had read just dilute it until concentration is ok then release.
But might be more tricky than that ^^ : https://www.sciencedirect.com/science/article/abs/pii/S00489...
dilute it with what? the clean water you just removed the salt from?
Re:Why Is Desalination So Difficult?
by function_seven on Wednesday July 05, 2023 @03:14PM
(#36605607)
No, the salt water you're about to discharge it into.
Have a pump that draws in 10L of ocean water for every 1L of brine you need to dispose of, mix 'em up, and discharge the 11L of only-slightly-saltier water back into the sea.
Not sure when it makes more sense to do that vs. having a leach-field type of brine discharge. They both ultimately do the same thing, but one requires more mechanicals, the other requires more piping and "passive" infrastructure.
Re:Why Is Desalination So Difficult?
by VintageCool on Wednesday July 05, 2023 @03:12PM
(#36605584)
Or a large amount of regular saltwater.
Sewage treatment outflows maybe? Wouldn't be enough in a community where all the freshwater is coming from desalination, because not all of the freshwater goes into the sewage system, but it might be workable in communities where desalination is augmenting other sources of freshwater.
> But, why not really-long-pipe-with-small-holes-along-the-length?
The OP mentions that this is common in practice, although it's easier to tell in the video that this is what is being described.
But, why not really-long-pipe-with-small-holes-along-the-length? That seems to me like a simple mechanism to send the brine back into the ocean without causing a local disaster on the sea floor. Is there maintenance required that makes it more expensive than I realize?