Interesting page, thanks for sharing.

Relevant citation from the page:

> This approach leverages desalination waste streams rather than virgin seawater. This is because seawater desalination plants typically leverage RO, which produces both a purified water stream and a reject stream consisting of a concentrated brine solution. Reject streams are typically discharged to the sea, however, it is possible to recover lithium and other materials from the RO reject brine. This is typically accomplished via a multistep process involving the sequential application of chemical reactants to adsorb, desorb, and crystallize the lithium (or other desired constituents) in the brine. The precipitated salt is then filtered and the brine discharged.

Makes sense to reuse the concentrated brine; IIRC that stuff is causing a lot of problems due to a huge local spike in salt (and other stuff) content of the water.

Does this cause you any problems when it seeps down into R'lyeh?

Thank you! I've been pondering this idea for ages, and I'm glad to see it's being looked into.