Abstract:Because the electrochemical oxidation technology is an effective and reliable clean technology,this study proposed electrochemical oxidation activated sludge process in electrolysis reactor with homocentric circle arrangement electrode in which Ti/RuO2 was used as reticular plates.The results showed that the electrochemical oxidation could significantly reduce activated sludge production.The activated sludge solution efficiency achieved to 29.98% in the experiment under the following optimal oxidation conditions: pH=12,60 min of intermittent electrolysis time,working voltage 6 V and initial MLVSS concentration of 4 670 mg·L-1.Under above conditions,the SCOD and TP released from cell dissolve got the maximum 712.2 and 33 mg·L-1,respectively;meanwhile,the NH3-N also reached the maximum and presented a declining trend,which showed that these conditions were the best electrolysis conditions.