TEXTILE WASTEWATER TREATMENT USING ADVANCED OXIDATION PROCESSES

Some hazardous components that are present in high concentrations in wastewater come from textile industry. Some substances in the wastewater are resistant to conventional biological treatments. For that kind of wastewater, the applicability of conventional chemical oxidation is still limited. Advanced Oxidation Processes which represent a treatment concept become increasing interest in wastewater treatment. The aim of the research is to study the performance of AOPs to treat the brownness textile wastewater. Four hundred mL of wastewater was poured into the batch reactor and the stirrer was turned on. The volume of the reactor was 1000 mL. Hydrogen peroxide (6000 ppm) for various amounts were added to the reactor and the UV lights were turned on at the same time. The performance of the process was measured by analyzing the decreasing of Chemical Oxygen Demand (conversion). The effect of hydrogen peroxide shows that by increasing the ratio of hydrogen peroxide to the wastewater, the reaction rate increases so that the conversion in the same time also increases. The conversion up to 80% was achieved when the volume ratio of H2O2 to the wastewater was 5:100 for about 100 minutes without any catalyst. The increases the number of lamps which were installed the higher the conversion was. Using 8 lamps, the maximum COD changes achieved was 85% for 150 minutes. By adding of 0.0998 gram ZnO, the conversion increases to about 90%.