What is Dissolved Air Flotation system DAF system? work and its use
This article discusses the concept of a Dissolved Air Flotation system in wastewater treatment. It further attempts to discuss how it works and what is the use of the DAF system.
Dissolved Air Flotation is one of the most proven and effective physical and chemical technology for the treatment of wastewater streams. These are designed basically to remove total suspended solids (TSS), Biochemical oxygen demand (BOD), and oils and greases (O&G) from wastewater streams.
In this technology, contaminants from the wastewater stream are removed using dissolved air-in-water solution that is produced by injecting the air into water recycled stream under pressure. The recycled stream is thereafter combined and mixed with the incoming wastewater. This is done in an internal contact chamber where the dissolved air-bubble stream comes out of the solution in form of micro-sized that attach to the documents.
The bubbles and contaminants, therefore, rise to the surface area and form a floating bed of material that is removed by a surface skimmer into an internal hopper for further handling process. This is an effective technique to treat a variety of industrial and municipal process and wastewater streams.
What is the Uses of Dissolved Air Flotation
DAF systems are the equipment that works for the removal of solid particles, oils, fats that are designed to clarify wastewater. The wastewater is pumped from the coagulation and flocculation system where the effective formation of flocs take place.
DAF system leaves the high quality of treated water. It is easy to operate the reduces the footprint. It lowers sludge production and management and treatment costs. It is quick to start and is very adaptable to various technologies.