FOG (fats, oil and grease) waste clogging your drainage systems is a problem if you process any kind of protein/food product where FOG is a byproduct. But if you’re successfully collecting it, you may only have two choices in getting rid of the stuff—because your small town publicly owned treatment works (POTW) most likely doesn’t want it either as it can’t expediently process large quantities of FOG. That leaves you collecting and having unprocessed FOG hauled to other third-party locations for processing—or you may now be able to process it on-site, especially if you already have an on-site wastewater pre/treatment system.
If you have enough FOG, you can process it into biofuel to run the FOG conversion process and potentially have enough left over to help fuel your boilers. Or you can sell the excess biofuel. Downey Ridge Environmental Co., developer of Greasezilla, has come up with a FOG separation system that can be implemented at food plants.