Pressure Dissolving Air Impeller Diffused Air Type

Pressure Dissolving Air Impeller Diffused Air Type systems, such as dissolved air flotation (DAF) systems, are designed for the treatment of industrial and municipal wastewater by removing suspended solids, oils, and greases. These systems work by dissolving air under pressure and then releasing it to create microbubbles that attach to particles, causing them to float and be removed from the water surface.

DAF systems consist of a pressurization system where water is saturated with air, a flotation chamber where the microbubbles are introduced to the wastewater, and a mechanism for removing the floated particles from the surface. The process is highly effective for treating a wide range of industrial effluents, including those from food processing, petrochemical, and pulp and paper industries.

The design of DAF systems has evolved to include more efficient air dissolution techniques, such as recycle pressurization, which uses a sidestream of clarified effluent to dissolve air into water more effectively. This method operates at higher pressures, resulting in smaller bubble sizes that provide a greater surface area for particle attachment and improved flotation efficiency.

These systems are also equipped with advanced chemical programs that enhance the coagulation and flocculation processes, leading to better particle destabilization and removal. The use of DAF systems has expanded beyond traditional wastewater treatment to include applications like algae removal, metal recovery from acid mine drainage, and clarification of biological solids in activated sludge processes.

In summary, Pressure Dissolving Air Impeller Diffused Air Type systems offer a reliable and efficient means of treating various wastewater streams by utilizing the principles of dissolved air flotation to achieve high levels of contaminant removal.