FWIW, I'm still strongly considering modifying
one of these I've got sitting around. Size wise, mine will have to sit on the floor as it's sized for an entire room, but it's just a modification (riveted sheet metal & silicone caulk to seal seams?) around the outer intake vent to fit a pipe. Internally, it's a pair of round filters (outer is carbon dust, inner is HEPA;
pic of the pair), a squirrel fan, and a switch.
Professional solder fume extractors use 0.3um HEPA filters for those I could find a published spec (seems not all are when I was looking before).
Whether you use a round one, or the flat type you linked, it's quite doable IMHO. DIY wood box would be sufficient for noise IMHO, or you could modify whatever unit the filters you linked fit (think this might be less expensive, assuming you need to buy everything to DIY build from scratch).
As per loudness, the squirrel fan used in mine isn't that loud (a bit quieter than a 10k BTU window A/C unit in fan only mode <fan running at max>). I can open mine up and get you the fan specs if you wish.
If you're interested in an intake piping system like what Hakko uses,
take a look here (2.5" ID segmented vacuum hose kit). Could give you a little flexibility & less clutter on your bench (i.e. HEPA on a shelf above your soldering area & bend hose wherever you need it), and it's the most reasonable source I could find.
Hope this helps.