The waste from conventional desalination plants contains concentrated levels of salt or brine that need to be processed further before being discharged into the sea. If salt levels are too high, they kill marine life in the area, creating a dead zone.
Oneka's machines use three-quarters of seawater pulled in mechanically to mix the concentrated salt from the membranes and release it back into the sea without raising sea levels by a high degree.
That's just nonsense. Conventional desalination plants can and do mix their salty discharge with sea water to dilute it too. There's nothing special about this machine in that regard.