Dissolved Air Flotation (DAF) is a widely used process in wastewater treatment plants that involves the separation of suspended solids from a liquid solution by incorporating air bubbles. The principle behind the use of DAF in wastewater treatment is based on the fact that air bubbles have a low density, which is lower than the density of the wastewater's suspended solids.

When air bubbles are introduced into the wastewater in the DAF process, they rise to the surface, carrying the suspended solids with them. The suspended solids that have been brought to the surface in this manner are then removed by means of a skimming system, where they are collected and separated from the wastewater.

The use of DAF devices offers several advantages over other wastewater treatment systems. DAF is an effective means of removing suspended solids, and thereby reducing the level of pollutants in the wastewater. The DAF process is easy to operate, requires minimal maintenance and has a low operating cost.

Another benefit of the DAF process is its versatility. It can be easily modified to accommodate changes in the type and concentration of suspended solids in the wastewater. This means that wastewater treatment plants can use DAF devices to treat a wide range of wastewater streams, from municipal sewage to industrial wastewater.

The use of dissolved air flotation devices in wastewater treatment is a highly effective and efficient means of removing suspended solids from wastewater. The many benefits of DAF, including its low operating cost, ease of operation, and versatility, make it a valuable tool for wastewater treatment professionals. As the demand for efficient and eco-friendly wastewater treatment solutions continues to grow, the role of DAF in the field is only set to increase.