Which of the following is a common application of a DAFT system?

A common application of a Dissolved Air Flotation (DAFT) system is solids separation. This process involves the removal of suspended solids from wastewater or other liquid streams. In a DAFT system, air is dissolved in water under pressure and then released into the wastewater, creating small air bubbles. These bubbles attach to the suspended solids, causing them to float to the surface, where they can be easily skimmed off.

The efficiency of this method in separating solids makes it highly effective for treating various types of wastewater. While odor control, water purification, and air filtration are important functions in wastewater management and other processes, they do not directly utilize the principles and mechanisms inherent to a DAFT system for the separation of solids as effectively as solids separation does.