Operation adjustments may be required to make low-IPA solutions work well, but the alternative cost of air pollution control equipment installation can make the effort economically worthwhile. Waste Solvents Rags become contaminated with ink and solvent. Depending on the solvent used, contaminated, non-saturated rags amy not be considered hazardous waste by the federal and state government if they are laundered and reused. However, contaminated rags to be disposed may be considered hazardous. These diposable rags must be stored separately from municipal trash and transported according to hazardous waste regulations.
Solvent Alternatives Use soap or detergent solutions wherever possible.
Employ solvents only for cleaning inks and oil. Employ specially made blanket washes that do not contain hazardous materials. Use small solvent recovery systems currently on the market, which work well. Employ acetic acid based cleaners, which are less toxic than other solvents. Waste Lubricating Oils Used lubricating oils should be analyzed to determine if they must be managed as hazardous waste.