Many people think a garbage disposal works like a blender, with spinning blades chopping and breaking down the waste. In reality garbage disposals work in a different way – and there are NO blades involved.
Instead, impellers, or lugs, mounted on a spinning plate use centrifugal force to continuously force food waste particles against a stationary grind ring.
The grind ring breaks down the food waste into very fine particles, virtually liquefying them. After they’re ground, the running water flushes the particles through the grind ring and out of the disposer and into your waste water pipe.
From there, it flows to a waste water treatment plant, or your septic system.