Blast thanks so much for that excellent explanation.

Edit: I have a question for you, I'm reading that coagulants work by neutralizing the charge, does that mean, then, that it would also work to break the cling between the radioactive ions and the water?

But then again, if it's like salt, and coagulants/flocculants don't remove salt from water, then I must be missing something. (My apologies for bringing this thread a little off topic.)