Adoption of DAF as a pre-treatment method for desalination plants

We are thinking of adopting dissolved air flotation (DAF) as a pre-treatment method for desalination plants. Your points of view, advice and experience about adopting DAF for desalination are welcome!  Some of the questions I have are: Is DAF efficient for water treatment for desalination? Which kind of coagulant is preferred for seawater desalination process? Which parameters play key roles in flotation of seawater? Please give your suggestions.