How is trash waste disposed in space?

Liquid waste (urine) was collected in a Urine Collection Device, used in common by the crew of an Apollo spacecraft. Roll-on cuffs provided personal sanitary protection for the astronauts using the collection device. The urine was then transferred through the Urine Transfer Tube to a tank, from which the liquid waste was vented into space.

Fecal matter was sealed in a Fecal Bag with a liquid germicide and sealed again in an outer bag. This solid waste was then placed into a Sanitation Box built into the spacecraft.