مرکز منطقه ای اطلاع رساني علوم و فناوري - Treatment of textile wastewater by electrocoagulation process

Abstract :

Electrocoagulation process (EC) has become a preferable process because of its advantages over chemical coagulation process. Therefore EC has been widely used to treat wide variety wastewaters. In this study, the treatability of textile wastewater by EC using aluminum electrodes was investigated. This purpose, EC process’s performance using aluminum electrodes connected monopolar parallel was investigated. The effects of various operating conditions such as, initial pH, current density and electrolysis time on removal efficiency of total organic carbon (TOC), chemical oxygen demand (COD), colour and turbidity were examined. The end of study, optimum conditions were determined. The optimum values of initial pH, current density and electrolysis time in the EC studies using aluminum electrode were found to be 3, 100 A/m^2 and 20 min, respectively. In these conditions, removal efficiencies for TOC, COD, colour and turbidity were obtained as 82.6%-72.5%-97.7% ve 98.7%, respectively. Beside in this study, according to Turkish Directive on Water Pollution Control, COD concentrations levels were below the permitted direct-discharge limits. Consequently, EC process is found to be an effective treatment method for textile wastewaters.