For Solvent- Contaminated Wastewater 3. Solvent-contaminated wastewater that is collected in a container and then poured into an evaporator or atomizer must be counted toward the dry cleaner's hazardous waste generator category. The reason for this is the chance of spills is increased when delivery is not closed and controlled. DEQ cannot endorse a specific type or brand of wastewater evaporator. You s hould consider the following features when purchasing an evaporator or atomizer.
Filters are necessary because they capture perc from the wastewater.
Filters will typically be made of carbon. Used filters, and any other solids generated from the evaporator, must be managed and disposed of as a hazardous waste, because they are contaminated w ith dry cleaning solvent. These wastes can be disposed of with your dry cleaning filters and sludge. This water should be removed, and solvent levels in the water reduced, before the wastewater can be filtered. This is important to ensure that only wastewater containing trace amounts of solvent is evaporated or atomized.