{HEAD ~ A method} for treating heavy metals which comprises adding the heavy metal treating agent 25 to {TAIL ~ a waste water} containing at least one heavy metal, and stirring the resulting mixture 
{ HEAD ~ A method } for treating heavy metals which comprises adding the heavy metal treating agent 25 to { TAIL ~ a waste water } containing at least one heavy metal , and stirring the resulting mixture
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH