Performance evaluation of 3D rotating anode in electro coagulation reactor: Part I: Effect of impeller

A hopper bottom electro chemical reactor with perforated 3D anode is attempted to avoid commonly encountered problems in conventional electrochemical reactor like short circuiting, development of dead zones, formation of oxide layer on anode surface etc. The RTD experiments and CFD simulations established that the present configuration performs better than commonly used plate electrode electrochemical reactors. The synthetic textile wastewater is treated in the proposed configuration. A higher COD removal efficiency (85.12%), color removal efficiency (97.97%) and low specific energy consumption (0.047 J/mg) are observed vis-a-vis plate electrode electrochemical reactors.