you dispose it properly where it will not harm anything or anybody.
You dont Take it to a qualified mechanic for a flush and they will dispose of the old coolant You dont Take it to a qualified mechanic for a flush and they will dispose of the old coolant
Drain and properly dispose (recycle) the old coolant. Put one bottle of Radiator Flush(from am auto parts store)in the radiator and refill with water. Run the car a idle(leave the heater ON to flush the heater core)for approx. 5 minutes. Drain and properly dispose of the flush liquid. Refill radiator with 50/50 mix of coolant and water or all premixed coolant.
Bring it to a recycling center
antifreeze coolant
Liquid coolant
You can buy liquid nitro at a coolant store
100.00
Antifreeze/Coolant
Ammonia is a toxic waste, so to dispose of it without ruinning anything you add other chemicals to the ammonia so its not toxic anymore.
The process of coolant filtration is actually a somewhat complicated process. Basically though the coolant filters allow recirculation and reuse of liquid coolant.
Liquid coolant