Used coolant, or antifreeze, could potentially be considered hazardous waste. Used antifreeze might be a hazardous waste if it is contaminated with certain metals, such as lead, cadmium or chromium. It can also be a hazardous waste if it has been mixed with other wastes such as gasoline or solvents.
Even if it is not considered hazardous waste, it is illegal in most areas to dump used antifreeze down sewers or storm drains. This has been shown to negatively impact fresh water quality and harm marine ecosystems.
Used antifreeze makes up a significant portion of many businesses' waste streams. Instituting a recycling program can significantly reduce costs associated with the handling, storage and disposal of used antifreeze. Recycling antifreeze can also reduce new material purchase costs. New technology allows antifreeze to be recycled onsite and reconditioned with additives at a cost that is significantly lower than the cost of purchasing new antifreeze.
Antifreeze recycling services may include on-site pick-up and transportation to a recycling facility or actual on-site recycling with recovered antifreeze being returned to the customer. When dealing with antifreeze disposal or recycling, it is important to work with a waste company that specifically deals with coolant to ensure all legal and socially responsible steps are taken to handle your waste.