The pipes are labelled "INERT REACTANT". Apparently that's not the oxymoron it appears to be.
On the other hand, Spock called the area "water turbine section 3"
I should point put that there was a very similar looking clear vertical pipe in the middle of Scotty's TAS engine room. Also, the TOS engineering room was all pipes and tanks, albeit on a much smaller scale.
Why the STXI pipe led to a huge blender, I don't know - but I LOL'd when I saw it (heck, Kirk's face was more
I'm just glad they didn't spend a single second of the movie in those damn crawlways that TNG/DS9/VOY keep going back to