anyone know of a used cooking oil filter system for large volume?

Question

filtering used cooking oil for fuel production on a large scale say 4k to 5k per day.

Answer 1

I know that the Deluxe Town Diner in Watertown Mass has been heating its building for several years using frying oil from his diner and other nearby restaurants. They have been written up in the Boston Globe and the owner loves to talk about how he has dealt with making biofuel practical (including the problems of filtering food particles). The link below has details.