Studi Penurunan Cod Dan Warna Dengan Teknologi Plasma Pada Limbah Cair Industri Tekstil Dengan Variasi Tegangan Dan Banyaknya Sirkulasi

The observation that has been done was about wastewater treatment from the textile industry using plasma technology. This study was aimed to determine the effect of the decreasing inthe concentration of COD and color in textile industry wastewater. Plasma reactor that used was non-contact electrode system. Activeelectrodespiral that made of copperwire,while the semicircleofaluminumsheet electrodeasthe passiveelectrode. The dielectric material thatused was a pyrex. The power generationusing AC voltage of 9-11kV and a frequency of 50Hz. Circulation that was done1-7timesof circulation. The initialwaste has been given pre-treatment aeration and thenthe results of pre-treatment aeration were used as the influent wastewater to be treated by plasma technology.The results showed that maximum COD removal efficiencywas about65%, while the color was about 67%. The concentration of COD and the colorconcentrationdecreasedwith the increasing voltage applied and the largecirculation that has been done. This is suggeststhat themagnitude of the voltageandthe amount ofcirculation affectedon the decreasing of the concentrationof COD and the color