Accordingly, there is provided {TAIL ~ a flotation column} consisting of a reactor and {HEAD ~ a separator} 
Accordingly , there is provided { TAIL ~ a flotation column } consisting of a reactor and { HEAD ~ a separator }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD