Oh and yes when diesel threaded $4 /gal I started my wmo with limited funds and on a time constraint. This was a BIG mistake don't put it in if you think/ suspect its not right!! That is costly!! Set it up and test it out on a batch trying different things on the same batch and find out what pulls the most junk out with what you have to work with. Space is my issue and so is Money Money Money MOHONEY. Over extending your budget is not the right way to set up wmo wvo etc. Take your time. Then when your done with R & D fab and setup run some tests (small ish) and then let her rip.
I got a lot of my "bad" (detective) info from some ppl that in hindsight didn't really know what they were doing.
And some of the best and most detailed info I researched at usfiltermaxx in there tech articles > make black diesel. They brake the process down so it makes sense to me. They do "push" there centrifuge though. Oh well work with what you got and make it work the best it can.
https://usfiltermaxx.com/en/content/9-make-black-diesel