Any operator of metalworking systems is likely reusing their metalworking fluids right now. Take for example a 10,000-gallon central system that recirculates the metalworking fluid at 1,500 gallons per minute. If that system were operating 16 hours per day for 250 days, portions of that fluid would be reused over 35,000 times in a single year.
True recycling goes a step beyond normal reuse. In recycling, the metalworking fluids are further processed to remove additional levels of contaminants, then chemical additions are made as necessary.