In Step 21, the solution containing solid microparticles is continuously pumped into the apparatus 1 for collecting {HEAD ~ solid microparticles} floating in {TAIL ~ water} even after the full water level is reached 
floating in
In Step 21 , the solution containing solid microparticles is continuously pumped into the apparatus 1 for collecting { HEAD ~ solid microparticles } floating in { TAIL ~ water } even after the full water level is reached
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH