Dilute the propylene glycol and pour it down the drain. If you live in a septic tank, never pour propylene glycol down the drain. This damages the bacteria in the system and in the soil. It seeps from the drainage field into groundwater and aquifer and becomes a risk to human and animal health.
Do not pour used antifreeze down the drain. Animals can still go where the liquid drains into a sewer and drink because it smells and tastes sweet. Also, it shouldn’t be placed in a septic tank.
To dispose of new or unused brake fluid, pour it into a container of cat litter. Brake fluid evaporates within a few days. As with painting, keep it away from pets, children and all sources of ignition.
Under the RCRA, neither pure ethylene glycol nor unused ethylene glycol antifreeze is considered hazardous waste until a decision is made to dispose of these products. If the waste exhibits any of these properties, it must be treated as hazardous waste.
a) Sugar, urea, vitamins, electrolytes, amino acids, peptides, proteins, carbohydrates and lipids: These substances are not considered particularly polluting and can therefore be discharged into the sewer system in small quantities.
Antifreeze has a sweet taste that can attract pets and small children. Also, don’t flush antifreeze down your home drains or toilet if you have a septic tank. If you’re plugged into a city sewer, take a test before running antifreeze down a drain or toilet.
Propylene Glycol is used in recreational vehicles and is easy to apply to the water system. This is commonly advertised as RV Antifreeze. You can pour the antifreeze directly into the toilet water tank after draining the water from the tank.
Check the local city website to see if they accept used antifreeze. Likewise, your local OReilly store may offer an antifreeze recycling service. Visit our office to find out more about the services available for the nearest OReilly auto parts. No auto parts store here accepts antifreeze.
Just click on Antifreeze and enter your postcode to find recycling centers near you. Licensed landfills accept used, uncontaminated antifreeze. Call your local landfill and ask if they have a used antifreeze tank.
A lot can be emptied into a large bucket and then disposed of properly. If the RV antifreeze you are using is biodegradable, another method is to open the drain and drain the non-toxic antifreeze from the system into a container.
Spilled and leaking antifreeze does not have to wait for it to evaporate, as antifreeze rarely evaporates when poured. Instead, they form a poodle-colored liquid that needs to be handled immediately.
Take the used antifreeze to a recycling center that will accept it. Antifreeze contaminated with oil or gas must be sent to a hazardous waste landfill with documentation. Immediately remove spilled material by covering it with absorbent material such as kale.
Safe disposal of propylene glycol
Ingestion of ethylene glycol causes CNS depression, which may be accompanied by nausea, vomiting and stomach cramps. Metabolites of ethylene glycol cause severe metabolic acidosis and damage to the brain, heart and kidneys. Severe poisoning can be fatal if treatment is inadequate or delayed.
Firstly, antifreeze is considered hazardous waste if it is mixed with hazardous waste (e.g. gasoline).
Propylene glycol is commonly found in many packaged foods such as beverages, salad dressings, dry soups, cake mixes, sodas, popcorn, food dyes, fast foods, breads, and dairy products (6).