COLOR REMOVAL FROM WATER WITH ULTRASOUND, FENTON AND SONO-FENTON PROCESSES

Treatment of textile industry wastewater is very difficult by conventional treatments methods because this industry wastewater contains synthetic dyes, complex organic pollutant, surfactants and other toxic substances. Textile industry wastewater needs to be treated by advanced water and wastewater treatment methods because it causes serious problems environment and human health due to high color, chemical oxygen demand (COD), pH, temperature and toxic chemicals. In this study, model wastewater prepared by using Basic Red 29 dye was treated by Ultrasound (US), Fenton (F) and Sono-Fenton (US-F) methods. Ultrasonic treatment studies were carried out with a power of 135 W in a continuous flow reactor operating at a flow rate of 5 mL / min and 22 kHz ultrasonic frequency. Hydrogen peroxide was added to the system to determine whether it had an effect to improve the removal efficiency on the ultrasonic process. In order to determine the color removal efficiency with the Fenton (F) process, 1000 mg / L hydrogen peroxide concentration was fixed and the effect of the added Fe + 2 concentration on the removal performance was determined. It has been determined that the use of ultrasound increases the removal performance of the system to over 90% in hybrid Sono-Fenton (US-F) treatment, when required Fe +2 concentration in a single Fenton process can be reduced by 1/5 for the same removal efficiency