Electric flocculation is a wastewater treatment process that combines complex adsorption with oxidation-reduction, acid-base neutralization, and air flotation separation. MYAMollah et al. researched the mechanism of electroflocculation and showed that the positively charged flocculant and pollutant particles are complexed and aggregated into clusters through electrostatic gravity and van der Waals force to form settleable flocs to be removed. Organic molecules can be decomposed into small molecules by anodic oxidation and are easily adsorbed by the flocculant, while dyes and dissolved metal ions can be separated from the water body by the electroreductive deposition of the cathode. When waste water is alkaline, metal ion anodic stripping generated through hydrolysis and complexation consumes too much wastewater OHˉ , so that pH drop ; For drainage, a metal hydroxide and a cathode electrolyzed water produced OHˉ energy consumption Wastewater The neutralization of H+ increases the pH . Therefore, electro-flocculation has the effect of neutralizing acid and alkali. In addition, when the flocs formed by the treatment of oily wastewater are light and difficult to settle, the cathode can also be used for hydrogen evolution or coupled with subsequent electric flotation processes. The O2 and H2 ( diameters not exceeding 60μm) produced by electrolyzed water are much smaller than the pressurized air bubbles. diameter ) micro light floc will float to the surface to achieve separation with the process object, and the procedure without external administration PAM reagents such as sludge and flocculation process. Electric flotation also has the function of removing COD by electro-oxidation.

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