Final answer:
Dewatering of liquid waste is a process of physical treatment where the waste is physically separated into solids and liquids, reducing volume and facilitating disposal or resource recovery.
Step-by-step explanation:
Dewatering of liquid waste is an example of a physical treatment of the waste. This process involves the separation of solids from liquids, often using methods such as filtration, centrifugation, or sedimentation. The goal is to reduce the volume of the waste and make its disposal more manageable or recover resources that can be reused. Unlike chemical treatments, which involve altering the chemical composition of waste, physical treatment involves dealing with waste in its existing form by physically removing elements from the waste without any chemical alteration.