Radial counterflow inductive desalination
patents.google.com
patents.google.com
It's a Tesla pancake coil over two counter-rotating impellers. Looks fairly simple to DIY. So much potential.
The same radial counterflow logic is used in more patents like purifying water via cavitation, separating solids and gases from liquids, and scrubbing CO2 and pollutants from smoke stacks.
Check them out at https://www.vorsana.com/technology/