Dissolved air flotation: Experiments and kinetic analysis

Based on the kinetic model of dissolved air flotation processes proposed in our previous paper, an experimental verification was carried out with batch and continuous flow apparatuses. We measured the characteristic properties of air bubbles, floc particles and their agglomerates. Kinetic parameters, such as the contact time and the intensity of turbulence in a contact zone and the bubble-flee collision-attachment factor were estimated and verified by comparing experimental data with kinetic model simulations. A comparison of the experimental data from the floating velocity distribution and the removal rate in a continuous flow apparatus with the simulations calculated from these kinetic parameters showed a good fit. These results supported the proposed kinetic model.