A new solar desalination system takes in saltwater and heats it with natural sunlight. The system flushes out accumulated salt, so replacement parts aren’t needed often, meaning the system could potentially produce drinking water that is cheaper than tap water.

Desalination system could produce freshwater that is cheaper than tap water::A new solar desalination system takes in saltwater and heats it with natural sunlight. The system flushes out accumulated salt, so replacement parts aren’t needed often, meaning the system could potentially produce drinking water that is cheaper than tap water.

    • @[email protected]English
      11•1 year ago

      Salt brine is highly corrosive to anything in contact with it so it is difficult to move, and in high concentrations wreaks absolute havoc in surrounding ecosystems. There’s a reason the phrase ‘salting the earth’ doesn’t have a good connotation. Desalination on a small scale might not seem like an issue but when dealing with the waste at scale becomes a bigger issue than even the energy cost to perform.

      • @[email protected]English
        0•1 year ago

        The byproduct is a sort of like salt water, but a lot more concentrated. It’s mostly NaCl, but there’s also various other anions and cations such as Al, Ca, Mg, K, SO4 etc. Those metals came from the ocean, so you might be inclined to think that you can dump them back into the ocean. The problem comes when you dump a lot of that stuff and you get very high concentrations locally. When the concentration of those compounds is within the normal range, sea life can handle it. Once it’s above the limit, you can expect things to struggle or die. Eventually, it will get diluted in the ocean, but before that the concentrations will be high enough to cause damage to most living things.