What you describe feels a little like a water treatment facility: stuff comes in, you deal with it, and materials come out (and still some waste). Water treatme

What you describe feels a little like a water treatment facility: stuff comes in, you deal with it, and materials come out (and still some waste). Water treatment is a little simpler since only water comes out... but then it's more complex because the inputs are all literally mixed together. It probably still requires some pre-sorting. People used to just pour paint down the drain. Some things can poison the system. I suspect we don't fully know what things will be problematic until we really try reclamation.