This 1947 video is catnip for sodium disposal enthusiasts [HT Bob O’Hara]:
Many people have re-enacted that on a tiny scale, albeit in a bigger body of water. Here’s one example:
If you have a nuclear processing facility, you can pick up some tips on alternate methods of sodium disposal by reading the International Atomic Energy Agency‘s “Sodium cleaning and disposal methods in experimental facilities“.
BONUS: A song to accompany the disposal of sodium (the chemical symbol for which is, of course, “Na“):