As a brewer this makes me happy. Currently we dump what yeast is not transferred out to the next tank, I would be curious to see their plan on how to harvest it and store it.
Well people are always brewing beer, right? Correct me if I'm wrong, but they could use JIT (Just In Time) stocking to make sure that they have a steady supply in and out, and if they have a deal with brewers, they could send out a collection tanker truck to breweries to collect a specific volume of slurry (The rest could go to wherever they usually send it), and send it out as it's produced. However, I'm an engineering student not a business student, so maybe this wouldn't work at all. The biggest problem with this would probably be involved with the timescale of brewing beer, because this is all off the top of my head and I have literally no knowledge about brewing other than "plants, yeast and water go in, beer comes out"!