Not sure where the (additional) resentment would come from? I already resent being in the vicinity of loud, swearing, drunks.
The solution (which is what we're getting anyway) is to make one of the lounges more like a pub - clusters of chairs for 'conversation', sportsball on the televisor and a trough full of party pies. Make the other lounge more of a business centre - single or two chair tables, more PC stations, less or no televisions other than for boarding information and sky news. We could even go crazy and play some classical music.
The punters will sort themselves out as to which environment they're more comfortable in, and anyone in the business-style lounge who is disturbing others can be reminded that this is a 'quiet zone' and be asked to shuffle off to the other one.
Funnily enough, I actually see this as the easiest part. Put a couple of actual bouncers in and have them turf anyone too drunk or rowdy. It works in hundreds of other pubs all over this country.