{HEAD ~ A plurality} of baffles within the vessel slow {TAIL ~ the effluent} so that solids settle out to a drain which is periodically opened to transfer the solids to an appropriate disposal 
slow
{ HEAD ~ A plurality } of baffles within the vessel slow { TAIL ~ the effluent } so that solids settle out to a drain which is periodically opened to transfer the solids to an appropriate disposal
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH