Studi Pengaruh Tegangan Dan Flowrate Gas Terhadap Konsentrasi Cod Dan Warna Pada Limbah Cair Industri Tekstil Dengan Teknologi Plasma

The textiles wastewater has high concentrate of COD and Color. The initial of COD concentration is 3250 mg/L and concentration of color is 2727 PtCo. The wastewater treatment with plasma technology has several advantages compares to other treatments. This research has been conducted to analyze the effects of voltage (9,11,13kV) and oxygen flowrate (0.25,0.5,1.0 L/m) on COD and color concentration. The pretreatment on this research was using filter papper and 5 minutes aeration with pure oxygen. Based on this research and discussion of qualitative and quantitative statistical test, voltage and flowrate variations affect the concentration of COD and color. The greater voltage and flowrate are used, the smaller COD and color concentration being resulted after the process. The highest removal efficiency occures at 13 kV of voltage and 1 L/min of flowrate. By this condition, removal efficiency of COD is 68% with a final concentration 833 mg/L and efficiency of color parameters is 71% with final concentration 455 PtCo