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supper_time @lemmy.fmhy.net
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Dubai’s Costly Water World | The city has spent billions of dollars to provide fresh water to its residents and tourist attractions, but experts say the efforts are straining the Persian Gulf
  • I was curious too. The article mentions that Dubai’s old reverse osmosis systems rely on flash distillation which adds a lot of heat to the system and thus the brine being returned to the gulf waters.

    “Unlike reverse osmosis, which removes salt and other contaminants by pushing water through a semipermeable membrane, multistage flash distillation relies on heat. Decades ago, when the U.A.E. began exploring desalination, the technology could better handle the Gulf’s high salinity, though reverse osmosis can now do the same. And although both technologies create brine, the byproduct of multistage flash distillation is far hotter, further disrupting the ecosystem.“

  • What do you swear by?
  • Does anyone have a good alternative to the G2 pens? They’re great pens, but the ink is so thick and wet that it smears too easily and frequently for me. I’ve been on the hunt for something nearly as good.