The SWQM process is very different in that it does not use ammonia gas and substitutes {TAIL ~ the quicklime RONFIE system} instead of {HEAD ~ the complex column system} 
The SWQM process is very different in that it does not use ammonia gas and substitutes { TAIL ~ the quicklime RONFIE system } instead of { HEAD ~ the complex column system }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD