Investigation of sludge production in an electrocoagulation process under different conditions
Volume Title: 1
1گروه مهندسی شیمی-دانشکده فنی-دانشگاه شهید مدنی آذربایجان-تبریز ایران
2دانشکده مهندسی شیمی، دانشگاه صنعتی سهند، تبریز، ایران
3دانشکده مهندسی شیمی، دانشگاه پیام نور، اراک، ایران
For the treatment of industrial wastewater, an electrocoagulation method is used. During the electrocoagulation process, a considerable amount of sludge is automatically produced. Sludge volume and sludge settling characteristics therefore are important parameters in the evaluation of the effectiveness of electrocoagulation treatment. In this study, the effect of pH, time, current density and distance between electrodes on Electrocoagulation Metal Hydroxide Sludge (EMHS) was investigated by electrocoagulation. The sludge produced was investigated using four different pH (1.45, 4.6, 6.2, 9.3), six current density conditions (0.5, 1, 1.5, 2, 2.5, 3A), and the inter-electrode distances (0.5, 1, 1.5, 2, 2.5cm). These characteristics were experimentally tested. The results show that there is linear relation between these parameters and EMHS such that EMHS increases with increasing current and time while decrease with more base pH.