Rancang Bangun Pembangkit Tegangan Tinggi Arus Searah sebagai Purifikasi Limbah Cair

Abstract

Environmental pollution caused by soil, water and air pollution is increasingly complex. Water pollution caused by various industrial activities, hospitals and domestic waste is increasing from year to year. Liquid waste will be discharged directly into waterways such as ditches, rivers and even oceans, which can damage the environment. Electrical disinfection is one of the efficient methods. One way to overcome the problem of water pollution is to use high voltage. A high voltage direct current is connected by two electrodes spaced apart from each other. By passing air into the contaminated liquid waste through two electrodes excited by a high voltage source. The high voltage generator produced uses a flyback transformer, which is controlled by PWM and frequency drivers, while the corona discharge plasma reactor is built with a two-electrode geometry in the reactor tube. The test results obtained for high-voltage equipment produce voltages that vary from 0 volts to 50 kilo Volts, while the PWM and frequency drivers obtain a frequency of 152.4 kilo Hz. Purification of liquid waste with high voltage has been shown to have an effect, changes in voltage have affected a decrease in pH, TSS, BOD, COD and the color of liquid waste as evidenced by a pH level of 7.49, a TSS level of 2, a BOD level of 24.2 mg/l, and COD of 46.5 mg/l.