Based on our deep knowledge and expertise on ozone benefits, reactions and control, we developed the new VADOF system. This technology is an Ozone Dissolved flotation which couples all DAF advantages with ozone reaction. The system alone allows for huge cost reductions in the cleaning of highly contaminated effluents, in the removal of difficult recalcitrant molecules, and even in the separation of the final sludge with combined strong oxidation and water disinfection.VADOF units combine several operations in one single unit, strongly improving space requirements, operation and control, with all safety devices