I took a thick cardboard shipping tube, cut it to about 20", taped it on to some flexible dryer duct and attached it to a HEPA air filter's outlet. The filter blows filtered air through the tube, and I seat my wet reels (film still on-reel) in the cardboard tube. A couple of skewers in holes at the bottom keep the reels from falling out, and I sit it on the tank used for developing. 30 minutes later: dry film, nearly dust-free.

What happens with my film after that point, not so dust-free...