Dissolved Air Flotation (DAF) is a water treatment process that is commonly used in municipal and industrial wastewater treatment plants. The equipment used in this process is designed to remove suspended particles from the water by using air bubbles to float them to the surface, where they can be removed.

The structure of DAF equipment is typically comprised of several key components, including the following:

1. Tank: The tank is the primary vessel where the wastewater treatment process occurs. This tank is typically made of steel or concrete and has a capacity of several thousand gallons.

2. Air Distribution System: The air distribution system is responsible for introducing the air into the wastewater. This system typically consists of a blower or compressor that pumps air into the tank through diffusers or nozzles.

3. Flocculation System: The flocculation system is responsible for agglomerating the suspended particles in the wastewater into larger clumps. This system typically uses a coagulant or flocculant to aid in this process.

4. Flotation Chamber: The flotation chamber is where the actual flotation process occurs. This chamber is typically located near the surface of the water and contains a series of rectangular or circular flotation cells.

5. Skimming System: The skimming system is responsible for removing the floatable particles from the surface of the water. This system typically uses a series of skimmer arms or paddle wheels to collect the particles and move them to a collection trough.

The structure of DAF equipment is designed to provide an efficient and effective process for removing suspended particles from wastewater. This process can help to improve the quality of the water before it is discharged into the environment, which can have a positive impact on both human health and the environment as a whole.