The SWQM process requires {HEAD ~ a sparging reactor} to {TAIL ~ bubble flue gas}, which contain CO2, from a nearby industry or solid waste plant 
to
The SWQM process requires { HEAD ~ a sparging reactor } to { TAIL ~ bubble flue gas } , which contain CO2 , from a nearby industry or solid waste plant
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH