How a Garbage Disposal Works – InSinkErator
Numerous people imagine a disposer operates similar to a blender, with spinning blades mincing and crushing the waste. In reality, disposers work differently, and there are no blades included.
Instead, impellers, or lugs, installed on a spinning plate use centrifugal force to push food waste scraps toward a stationary grind ring continuously.
The grind-ring slices the food waste into very granular bits, virtually liquefying them. After they are ground, the flowing water washes the particles through the grinding ring and out of the disposer and into the wastewater pipe.
From there, it flows to a wastewater treatment plant or your septic system.