The disclosed method and apparatus simultaneously purifies air and {HEAD ~ water} contained in {TAIL ~ an indoor institution} such as an indoor swimming pool facility 
contained in
The disclosed method and apparatus simultaneously purifies air and { HEAD ~ water } contained in { TAIL ~ an indoor institution } such as an indoor swimming pool facility
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH