We weren't discussing whether UV could penetrate, but if it can be used to pasteurize. It can penetrate, and has the effects I've already mentioned, in addition to the generation of reactive oxygen.
According to your source, clear water (which has a lower optical density than beer/soda and higher UV penetration) must be kept in full sunlight for 6 hours - 2 days, and just to kill diarrhea causing microbes. No one should do that to their beer/soda, and yeast is pretty tough.
I would still say though, that the OP's UVB lamp probably isn't going to cut it.