Q: Our process has used petroleum solvent since 1946. Twenty-five years ago, we started using a charcoal filtration system. What is the best and most appropriate way to dispose of the cartridges?
A: In our opinion, the only way to dispose of any type of solvent-related waste is to give it to a licensed hazardous-waste hauler.
Although petroleum wastes may be able to be disposed of at a facility that accepts waste oil, there may be an issue with cross-contamination from solvents or spotting agents present in the waste.