The effect of temperature on the efficiency of wastewater treatment by electroflotation process supplied by solar energy

In this work, the effect of liquid phase temperature on the hydrodynamic of oxygen and hydrogen bubbles generated by electroflotation process was studied. The diameter and the rise velocity of bubbles were calculated using the method of video recording and image processing. The effect of both liquid phase physicochemical characteristics and current density applied at the electrodes of the electroflotation column on the bubble flow regimes has been studied. Empirical models based in nonlinear regressions were elaborated summarizing hydrodynamic results. These models were used to optimize the treatment of industrial wastewaters. The treatment consists of the abatement of suspended solids rate which exceeded 90%. The effect of temperature variation on the process efficiency in terms of power consumed by electrodes was also studied. This optimization was the key to dimension an efficient photovoltaic solar system able to supply the process.