Combination of Electrolysis Technology with Membrane for Wastewater Treatment in Rural Communities

摘要

In this study, the electrolysis technology using copper electrode and ceramic membrane for themicrofiltration were consisted to the system and applied for the treatment of domestic wastewatergenerated from small and rural communities. When the system was operated at the conditions of undervoltage of 24V, current ranges of 0.14~0.36A, and TMP of 79.98kPa, the system showed the averageremovals of organics as chemical oxygen demand, total nitrogen, and total phosphorus as high as88.5%, 66.7%, and 100%, respectively. Rapid organics removal was observed through electro- oxidation and electro-coagulation during the electrolysis procedure in shorter retention time of 5minutes, and the residual particulate organics could be also removed through the membrane filtration.Most total Kjeldahl nitrogen was removed by electrolysis, and it could be performed by removal ofammonia which consists of total kjeldahl nitrogen. Phosphorus was also removed successfully throughthe formation of copper phosphate by electro-coagulation in electrolysis adopting the copper electrode.Increased suspended solids and turbidity by the effect of electro-coagulation in electrolysis wereclearly removed during the membrane filtration.