The chlorine bubble size and distribution electrolytically evolved from DSA/NaCl system were investigated by means of Laser diffraction method. An increase of bubble diameter with increasing current density was observed in the range of 50-300mA/cm2. Electrode orientation and geometry both affected bubble size. When brine concentration was decreased
chlorine bubble diameter became smaller. The results showed that for multi-bubbles system
bubble coalescence might largely determined the bubble size and its distribution.